Technical field
[0001]The present invention fender support structure for supporting a fender for covering the front wheels, and a working vehicle technology comprising it.
BACKGROUND
[0002]Conventionally, the fender support structure for supporting a fender for covering the front wheel technology has been known. For example, it is as described in Patent Document 1.
[0003]In the technique described in Patent Document 1, the interlocking member interlocked with the front wheel steering operation (steering), a technique for fixing the fender covering the front wheels through a stay or the like is disclosed. According to this configuration, the fender also rotates along with the front wheel steering, it is possible even in a state where steering the front wheels to prevent mud wings by the front wheels.
[0004]
　However, as in the technique described in Patent Document 1, it rotates the fender with the front wheel steering, the fender body (e.g., hood, etc.) and may interfere.
CITATION
Patent Document
[0005]
Patent Document 1: JP Mika registration No. 2525483
Summary of the Invention
Problems that the Invention is to Solve
[0006]
　The present invention has been made in consideration of the above-described circumstances, an object to be its resolution, fender support structure can suppress the interference of the fender with the steering of the left and right front wheels, and includes the same it is to provide a work vehicle.
Means for Solving the Problems
[0007]
　The problems to be solved by the present invention have been described above, it will be described a means for solving this problem.
[0008]
　That is, the fender support structure of the present invention comprises a first rotating body that rotates along with the front wheel steering can be relatively rotated with respect to said first rotary member, a second for supporting a fender for covering the front wheel and the rotating body, is accommodated in the first rotary member and the second rotary member, holding force relative rotational position with respect to the first rotary member of said second rotating body, it attempts to hold a predetermined initial position a holding mechanism for generating, when the steering angle of the front wheel becomes on the left and right than a predetermined value, regulations restricting the rotation of said second rotary member associated with the front wheel steering against the holding force those comprising a mechanism.
[0009]
　Further, the fender support structure of the present invention further comprises a seal member for sealing between the said second rotary member and the first rotating body.
[0010]
　Further, the second rotating body is intended to be arranged so as to cover the first rotary member from the top and sides.
[0011]
　Further, the holding mechanism, the second time the body portion that is wound in a coil shape having a substantially axis parallel to the rotation axis of the body, and the so formed as to protrude from the main body portion in a radial direction at both ends a torsion spring having, fixed to said first rotating body, and either can be engaged first fixing part of the end portions being secured to said second rotary member, and the other of said end portions is intended to includes a second fixing portion engageable, the.
[0012]
　Further, the fender support structure of the present invention is accommodated in the first rotary member and the second rotary member, in which further comprises a protective member for covering the torsion spring from radially outside.
[0013]
　Further, the first fixing part and said second fixing portion, the formed substantially parallel to the rod-shaped and rotating axis of the second rotary member, in a state where the second rotary member is in said initial position, said end portions either also it is intended to engage.
[0014]
　Further, the both end portions are those which are formed so as to protrude toward said from the main body portion radially inward.
[0015]
　Moreover, said end portion, in a state where the second rotary member is in said initial position, as viewed from the axial direction of the rotation axis of said second rotary member, so that the mutual clearance is reduced radially inward it is formed on the first fixing part and said second fixing portion are those that are located in the gap.
[0016]
　Further, the first fixing part and said second fixing portion, the formed on the second rotary member cylindrical extending substantially parallel to the pivot axis of one of the first fixing portion or said second fixing portion, the diameter those located in the outward direction are those formed such that the diameter is larger than that located radially inwardly.
[0017]
　Further, the regulating mechanism, based on the steering angle of the front wheel in a state where the vehicle goes straight, the second rotary member wherein the front wheels of the front is rotated to the vehicle body inside the front wheels when it is restricted steering angle, the rear side of the front wheel is being formed to be larger than the front wheel steering angle when turning to the second rotating body is restricted to the vehicle body inner side.
[0018]
　Further, the regulating mechanism is fixed to said second rotary member, the front wheel of the front side of the second rotary member by abutting on the vehicle body portion when pivoted by a predetermined steering angle and the vehicle body of the inner a first restricting portion for restricting the rotation, secured to said second rotary member, the second in the portion and coming into contact when the rear side of the front wheel is rotated by a predetermined steering angle and the vehicle body of the inner a second regulating portion for regulating the rotation of the rotating body, is intended to include a.
[0019]
　Further, the regulating mechanism is one further comprising the first regulation portion and the second regulating portion of the second time can change adjusting mechanism fixed position relative to the moving object.
[0020]
　Moreover, it said portion are those which are junctions of the case of the front axle mechanism for transmitting power to the front wheels.
[0021]
　Further, the steering angle of the front wheel, in a state where the vehicle is a steering angle at which the straight, towards the first regulating portion than said second restricting portion in which is located away in the lateral direction from said portion is there.
[0022]
　The work vehicle of the present invention are those having a fender supporting structure of the present invention.
[0023]
　Further, the fender, the front end is intended to be formed so as to be located further forward than the front and rear same front end of the front wheel in the direction, or the front wheel front end.
[0024]
　Further, the fender, the outer periphery of the front wheel, in which half is formed so as to cover above.
The invention's effect
[0025]
　The present invention exerts the following effects.
[0026]
　In fender support structure of the present invention, it is possible to suppress interference of the fender with the steering of the left and right front wheels. In particular, not only when the front wheel is steered in one direction, because the interference of the fender even when it is steered in the other direction can be suppressed, thereby improving the degree of freedom of the shape of the fender. Further, it is possible to prevent the foreign matter from adhering to the holding mechanism effectively.
[0027]
　In fender support structure of the present invention, it is possible to prevent the foreign matter retaining mechanism from adhering effectively.
[0028]
　In fender support structure of the present invention, it is possible to prevent foreign material from entering the inside of the first rotary member and second rotary member effectively.
[0029]
　In fender support structure of the present invention, it is possible to obtain the holding force with a simple configuration.
[0030]
　In fender support structure of the present invention, it is possible to prevent the torsion spring from interfering with other members.
[0031]
　In fender support structure of the present invention, it is possible to obtain the holding force with a simple configuration. That is, even the front wheel is steered in either the left and right, can first fixing part and a second fixing portion, to obtain the holding force engages in one of both end portions of the torsion spring. Thus, regardless of the front wheel steering direction, by two stationary portions (first fixing part and a second fixing portion) and the torsion spring can be obtained holding force.
[0032]
　In fender support structure of the present invention, it is possible to easily obtain a high holding force. That is, the both end portions by forming the inside of the main body portion, it is possible to easily increase the diameter of the main body portion wound in a coil shape. Thus, the restoring force of the torsion spring (holding force) is easily ensured.
[0033]
　In fender support structure of the present invention, it is possible to easily and both end portions of the torsion spring and the first fixing part and a second fixing portion engages.
[0034]
　In fender support structure of the present invention, it is possible to generate a holding force for holding the rotational position of the second rotary member to the initial position appropriately.
[0035]
　In fender support structure of the present invention, it is possible to more appropriately follow the fender to the front wheels. That is, normally, the vehicle body (e.g. bonnet) the width of the front is formed narrower than the width of the rear, when the front wheels of the front is rotated and the vehicle body of the inner, the inner side of the vehicle body after the front wheel as compared with the case of turning to a more fender can be made closer to the vehicle body. Therefore, when the front wheels of the front side rotated into the body of the inner, by regulating the second rotary member at a larger steering angle, it is possible to follow the fender to the front wheels in a wide rotation range.
[0036]
　In fender support structure of the present invention, it is possible to restrict the rotation of the second rotary member with a simple configuration.
[0037]
　In fender support structure of the present invention, it is possible to rotate the second rotating body is arbitrarily changed steering angle of the front wheels is restricted. Thus, the body shape and work, it is possible to set in accordance with the preferences of workers.
[0038]
　In fender support structure of the present invention, the first regulation portion and the second regulation portion is facilitated to confirm the site abuts. Thus, it becomes easy to adjust the position of the first regulating portion and a second restricting portion.
[0039]
　In fender support structure of the present invention, it is possible to more appropriately follow the fender to the front wheels.
[0040]
　In the work vehicle of the present invention, it is possible to suppress interference of the fender with the steering of the left and right front wheels.
[0041]
　In the work vehicle of the present invention, the front wheels of the mud ne, especially, it is possible to effectively suppress the mud wings during backward.
[0042]
　In the work vehicle of the present invention, it is possible to effectively suppress the front mud wings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0043]
[1] a side view showing an overall structure of a tractor according to an embodiment of the present invention.
[2] rear perspective view showing a front axle mechanism and fender support structure.
[Figure 3] upper perspective view showing a front axle mechanism and fender support structure.
[Figure 4] a side sectional view showing a fender supporting structure.
[FIG 5] A-A cross-sectional schematic view.
[6] a plan cross-sectional view schematically cover member showing a state of being rotated in one direction.
[7] a plan cross-sectional schematic view of the cover member showing a state of being rotated in the other direction.
[FIG. 8] (a) schematic plan view showing a regulating mechanism. (B) schematic plan view showing the regulating mechanism when the front wheel is steered in one direction. (C) schematic plan view showing the regulating mechanism when the front wheel is steered in the other direction.
[FIG 9] (a) a schematic plan view showing a state in which the front wheel is steered in one direction. (B) schematic plan view showing a state where the front wheel fender is restricted.
[FIG. 10] (a) a schematic plan view showing a state in which the front wheel is steered in the other direction. (B) schematic plan view showing a state where the front wheel fender is restricted.
[FIG. 11] (a) a side view showing a first modified example of the front wheel fender. (B) a side view showing a second modification of the front fender.
[FIG. 12] (a) schematic plan view showing an example in which the different positions front fender and the front wheel rotating shaft. (B) schematic plan view showing a state in which the front wheels are steered to the left. (C) schematic plan view showing a state in which the front wheels are steered to the right.
[13] a plan cross-sectional schematic view showing a modified example of the torsion spring.
DESCRIPTION OF THE INVENTION
[0044]
　First, with reference to FIG. 1, it will be outlined in the tractor 1 having a fender support structure 100 according to one embodiment.
[0045]
　Tractor 1 mainly body frame 2, front axle mechanism 3, front wheels 4, rear wheels 5, an engine 6, the hood 7, the steering wheel 8 comprises a seat 9, the front wheel fender 10, rear fender 11 and the fender support structure 100 .
[0046]
　Body frame 2 is disposed a longitudinal direction thereof as a front-rear direction. Front of the body frame 2 is supported by a pair of left and right front wheels 4 via a front axle mechanism 3. Rear portion of the body frame 2 is supported on rear wheels 5 pair through the rear axle mechanism (not shown). Front wheel 4 is generally covered from above by the front wheel fender 10. Rear wheel 5 is substantially covered by the rear wheel fender 11 from above.
[0047]
　Front fender 10, the front end is formed slightly so as to be located further forward than the front end of the front wheel 4. Thereby, it is possible to effectively prevent the mud splashing due front wheels 4 when the tractor 1 moves backward (retracted). The front fender 10 is supported by the fender support structure 100 to be described later.
[0048]
　Engine 6 is provided on the front portion of the body frame 2. Engine 6 is covered by the hood 7. Power of the engine 6, after being speed by a suitable transmission, with is can be transmitted to the front wheels 4 via the front axle mechanism 3, it is can be transmitted to the rear wheel 5 through the rear axle mechanism. Front and rear wheels 4 and 5 is rotated by the power of the engine 6, the travel of the tractor 1 takes place.
[0049]
　Toward the rear from the front and rear intermediate portion of the body frame 2, a steering wheel 8, the speed change operation member (not shown), the driving operation portion is provided with a seat 9 and the like. Steering wheel 8 can be its bending angle of the pair of left and right front wheels 4 by adjusting (changing) in accordance with the rotation operation amount, to steer the tractor 1.
[0050]
　Next, with reference to FIGS. 2 and 3, the front axle mechanism 3 will be described more specifically. Incidentally, in FIGS. 2 and 3 are mainly are illustrated the right side of the front axle mechanism 3 (the vicinity of the right front wheel 4), the left side of the front axle mechanism 3 also substantially similarly to (horizontally substantially symmetrical ) are formed.
[0051]
　Front axle mechanism 3 is configured to transmit the power from the engine 6 to the front wheels 4, it is to steer the tractor 1 by adjusting the steering angle of the front wheels 4. Front axle mechanism 3 is mainly the differential case 31 comprises a bevel gear case 32 and the front wheel casing 33.
[0052]
　The differential case 31 is a box-shaped member forming a right center portion of the front axle mechanism 3. The differential case 31 is disposed toward the longitudinal direction in the lateral direction. The differential case 31 is formed the left and right ends in a hollow shape so as to communicate. Central portion of the differential case 31 is connected so as to be swingable with respect to the body frame 2. The left and right end portions of the differential case 31, the flange portion 31a is formed.
[0053]
　Bevel gear case 32 is a box-shaped member formed in a hollow shape. (2 and 3, the left end) Bevel inner end portion of the gear case 32, the flange portion 32a is formed. Flange portion 32a of the bevel gear case 32 is fixed with bolts or the like to the flange portion 31a of the differential case 31. Thus, the differential case 31 and the bevel gear case 32 are joined together at flange portions 31a and the flange portion 32a.
[0054]
　Front case 33 is a box-shaped member formed in a hollow shape. Front case 33 is rotatably coupled to the bevel gear case 32. More specifically, the front wheel casing 33 about the rotation axis directed substantially vertically, can pivot to the left and right with respect to the bevel gear case 32. On the side of the front wheel case 33 is provided the front axle (not shown), the front wheels 4 are fixed via the front axle.
[0055]
　The front case 33, a steering cylinder (not shown) is connected. When the steering wheel 8 is operated to rotate the steering cylinder is expanded or contracted in accordance with the rotation operation amount. Thus, pivoted relative to the front wheel casing 33 is a bevel gear case 32, it is possible to turn steer the front wheels 4.
[0056]
　Further, the differential case 31, inside the bevel gear case 32 and the front wheel casing 33 is disposed member for transmitting power (shaft member and a gear, etc.), power from the engine 6 by the shaft member and the like to the front wheels 4 It is transmitted.
[0057]
　Next, with reference to FIGS. 2 to 8, the fender support structure 100 will be described more specifically. In the following is a description of the fender support structure 100 for supporting the right front wheel fender 10, the fender support structure 100 for supporting the front wheel fender 10 of the left side is configured in the same manner (symmetrically and right fender support structure 100) ing.
[0058]
　Fender support structure 100 is for supporting the front wheel fender 10. Fender support structure 100 is mainly base member 110, the rotation shaft 120, the cover member 130 comprises a sealing member 140, holding mechanism 150 and the restricting mechanism 160.
[0059]
　The base member 110 shown in FIGS. 4 and 5, a circular plate-shaped member. The base member 110 is fixed to the upper (axis of the rotation shaft of the front wheel case 33) of the front wheel case 33 (see FIGS. 2 and 3). Thus, the base member 110 rotates integrally with front wheel casing 33.
[0060]
　Rotation axis 120 is a substantially cylindrical member. Rotation shaft 120 is disposed in a state with its axis substantially vertically. The axis of the pivot shaft 120 is arranged to coincide with the axis of the pivot shaft of the front wheel casing 33. Upper and lower middle portion of the rotation shaft 120 is formed such that the diameter compared to the upper and lower end portions is increased. The lower end of the rotation shaft 120 is fixed by being inserted into a through hole formed in a central portion of the base member 110.
[0061]
　Cover member 130 shown in FIGS. 2 to 5 is a box-shaped member formed in a hollow shape. The cover member 130, the bottom surface is open. The inner surface of the cover member 130 is formed to have a flat cross section a circular shape (circular shape having a slightly larger diameter than the outer diameter of the base member 110). The cover member 130 is disposed to cover the base member 110 from above. First bushing 131 is disposed between the inner surface of the cover member 130 (inner circumferential surface) and the outer circumferential surface of the base member 110.
[0062]
　The lower end of the cover member 130 is disposed to cover the base member 110 from the side (radially outward). Thus, the cover member 130 can cover the base member 110 from the side and upper. The first bushing 131 is formed in a substantially cylindrical shape. The first bushing 131 is placed in a state with its axis substantially vertically. The first bushing 131 is disposed along the inner surface of the cover member 130 (inner circumferential surface). The first bushing 131 is disposed from the upper end vicinity of the inner surface of the cover member 130 to span adjacent the lower end. The lower end of the first bushing 131 is disposed between the inner surface of the cover member 130 (inner circumferential surface) and the outer circumferential surface of the base member 110.
[0063]
　The upper surface of the cover member 130 through hole is formed, the upper end portion of the rotation shaft 120 in the through hole is inserted. Second bushing 132 is disposed between the inner periphery and the outer periphery of the rotation shaft 120 of the through hole. Above and below the second bushing 132, a thrust collar 133 are respectively provided. Further, in the just above the upper thrust collar 133, the retaining ring 134 to the rotation shaft 120 is provided. The through hole of the cover member 130 is closed from above by a cover member 135.
[0064]
　As shown in FIGS. 2 and 3, the outer surface of the cover member 130, the fender bracket 136 is fixed. Fender bracket 136 is formed so as to extend substantially upward from the cover member 130. The upper end of the fender bracket 136 is secured to the front wheel fender 10. Thus, through the fender bracket 136, front fender 10 is supported by the cover member 130.
[0065]
　The cover member 130 configured as described above, can be relatively rotated with respect to the base member 110 about the rotation shaft 120.
[0066]
　Seal member 140 shown in FIG. 4 is to prevent the entry of foreign matter into the interior of the cover member 130 (water, mud, dust, etc.). Seal member 140 is provided at the lower end of the inner peripheral surface of the cover member 130. Thus, the sealing member 140 may fill the gap between the inner peripheral surface and outer peripheral surface of the base member 110 of the cover member 130.
[0067]
　More particularly, the inner surface of the cover member 130 (inner circumferential surface), the recess 137 is formed. Recess 137 is formed by expanding the diameter of the lower end portion of the inner surface (inner peripheral surface) of the cover member 130 radially outward. Seal member 140 is formed in an annular shape. Seal member 140 is fixed by being fitted into the recess 137 of the cover member 130. Seal member 140 is disposed immediately below the first bushing 131. The inner peripheral surface of the seal member 140 is in contact with the base member 110. Thus, the sealing member 140 can seal between the cover member 130 and the base member 1100.
[0068]
　Holding mechanism 150 shown in FIGS. 4 and 5, the relative rotational position with respect to the base member 110 of the cover member 130, is intended to generate a holding force to be maintained at a predetermined initial position. Holding mechanism 150 is housed inside the cover member 130. Holding mechanism 150 is mainly first fixed shaft 151, comprises a second fixed shaft 152 and the torsion spring 153.
[0069]
　The first fixed shaft 151 is a cylindrical member. The first fixed shaft 151 is disposed in a state with its axis substantially vertically. The first stationary shaft 151 is arranged so as to be adjacent in the radial direction with respect to the rotation shaft 120. The lower end of the first fixed shaft 151 is fixed by being press-fitted to the base member 110.
[0070]
　The second fixed shaft 152, a cylindrical member formed in the same shape as the first fixed shaft 151. The second fixed shaft 152, is placed in a state with its axis substantially vertically. The second fixed shaft 152, are (diameter direction outer side of the first fixed shaft 151) disposed adjacent to the radial direction relative to the first fixed shaft 151. The upper end portion of the second fixed shaft 152 is fixed by being press-fitted to the cover member 130.
[0071]
　The first fixed shaft 151 and the second fixed shaft 152 is disposed so as to extend substantially parallel to the rotation shaft 120. That is, the first fixed shaft 151 second fixed shaft 152, are parallel to each other. With this arrangement, space saving of the holding mechanism 150 (miniaturization) tends aim.
[0072]
　Torsion spring 153 is a coil spring which is formed by appropriately by bending the wire. Torsion spring 153 comprises mainly a body portion 153a, the upper portion 153b and lower portion 153c.
[0073]
　Body portion 153a is a portion which is formed by winding a wire into a coil. The outer diameter of the main body portion 153a is formed to be slightly smaller than the inner diameter of the inner peripheral surface of the cover member 130. Body portion 153a, in a state with its axis substantially vertically (substantially parallel to the axis of the rotation shaft 120), it is disposed so as to surround the rotation shaft 120 from the outside.
[0074]
　Upper portion 153b is a part formed by bending towards the (upper end portion) in the radially inner portion of the strand. Thus, upper portion 153b is formed so as to protrude toward the main body portion 153a radially inwardly. Upper portion 153b is radially formed so as to extend from the body portion 153a to the vicinity of the rotating shaft 120.
[0075]
　Lower portion 153c is an other end formed by bending towards the (end of the lower side) in the radially inner portion of the strand. Thus, the lower end portion 153c is formed so as to protrude toward the main body portion 153a radially inwardly. Lower portion 153c, in the radial direction, are formed so as to extend from the body portion 153a to the vicinity of the rotating shaft 120.
[0076]
　Here, in a state in which external force to the torsion spring 153 is not applied, upper portion 153b and the lower end portion 153c is formed so as to extend substantially in parallel in plan view (see FIG. 5). Also, in plan view, between the upper portion 153b and the lower end portion 153c, a constant gap is formed. The width of the gap is formed to be substantially equal to the outer diameter of the first fixed shaft 151 and the second fixed shaft 152. Torsion spring 153, the first fixed shaft 151 and the second fixed shaft 152 in the gap are arranged so as to be located. The rotational position relative to the base member 110 of the cover member 130 in this state is referred to as "initial position" of the cover member 130. When the cover member 130 is in the initial position, the first fixed shaft 151 and the second fixed shaft 152, so as to be sandwiched in the upper end portion 153b and the lower end portion 153c, engaged with the upper portion 153b and lower portion 153c there.
[0077]
　Thus, the holding mechanism 150 is housed inside the cover member 130 (the space surrounded by the base member 110 and the cover member 130). The space holding mechanism 150 is accommodated is also sealed by the sealing member 140, intrusion of foreign matter from the outside is prevented.
[0078]
　The thus constituted holding mechanism 150, the holding force to be holding the rotational position of the cover member 130 to the initial position (see FIG. 5) is generated.
[0079]
　For example, as shown in FIG. 6, when the cover member 130 is pivoted in a plan view clockwise relative to the base member 110, the second fixed shaft 152 fixed to the cover member 130 also rotates shaft 120 as the center It rotates viewed clockwise. Then, the lower end portion engaged with 153c of the second fixing shaft 152 is a torsion spring 153, also rotates in a plan view clockwise the lower portion 153c. On the other hand, the upper end 153b of the torsion spring 153 engages the first fixed shaft 151, is not to be rotated from its position. Thus, torsion since the spring 153 is twisted, the original position of the second fixed shaft 152 by the biasing force of the torsion spring 153 restoring force for returning the (initial position) (holding force) is generated.
[0080]
　At this time, the main body portion 153a of the torsion spring 153, by being twisted by the first fixed shaft 151 and the second fixed shaft 152, the diameter is reduced. However, the main body portion 153a is disposed along the vicinity of the inner peripheral surface of the cover member 130, the space on the inside of the main body portion 153a is secured. Therefore, even if the diameter of the body portion 153a is smaller, will not be the main body 153a from interfering with other members and the like.
[0081]
　Thus, by disposing the main body portion 153a in the vicinity of the inner peripheral surface of the cover member 130, it can be hard to interfere with another member when the main body portion 153a is twisted. Thus, the relative amount of rotation of the cover member 130 relative to the base member 110 (movable range) can be largely secured.
[0082]
　Further, on the inner peripheral surface of the cover member 130, first bushing 131 is provided. By said first bush 131, the torsion spring 153 can be prevented from interfering with the cover member 130. Thereby, it is possible to prevent deformation and damage of the cover member 130 and the torsion spring 153.
[0083]
　Central Moreover, as shown in FIG. 7, when the cover member 130 is pivoted in a plan view counterclockwise relative to the base member 110, the second fixed shaft 152 fixed to the cover member 130 also rotates shaft 120 It rotates in a plan view counterclockwise direction. Then, the upper end portion 153b engages the said second fixed shaft 152 is a torsion spring 153, also rotates in a plan view counterclockwise the upper portion 153b. On the other hand, the lower end portion 153c of the torsion spring 153 engages the first fixed shaft 151, is not to be rotated from its position. Thus, torsion since the spring 153 is twisted, the original position of the second fixed shaft 152 by the biasing force of the torsion spring 153 restoring force for returning the (initial position) (holding force) is generated.
[0084]
　Thus, when the cover member 130 tries to rotate relative to the base member 110, the first fixed shaft 151 and the second fixed shaft 152, both end portions of the torsion spring 153 respectively (the upper end portion 153b or the lower end portion 153c) by engaging the holding force to be holding the cover member 130 to the initial position occurs. Therefore, basically, never base member 110 and the cover member 130 is rotated relatively, the base member 110 is rotated with the steering of the front wheel 4, the cover member 130 also with the base member 110 It will be integrally rotated.
[0085]
　2, restricting mechanism 160 shown in FIGS. 3 and 8 is for restricting the rotation of the cover member 130 due to the rotation of the base member 110. Restricting mechanism 160 comprises mainly a front stay 161, a side restricting portion 162, the rear stay 163 and the rear-side restriction portion 164.
[0086]
　Front stay 161 is a substantially plate-shaped member. Front stay 161 is fixed to the front end portion of the cover member 130. The left end of the front stay 161 is bent forward. The left end of the front stay 161 (the bent portion toward the front), the through hole for inserting the side restricting portion 162 to be described later (not shown) is formed, the front side at positions corresponding to the through hole nut 161a is fixed.
[0087]
　Side restricting portion 162 is a portion that protrudes from the front stay 161 to the left. Side restricting portion 162 is fixed to the left end portion of the front stay 161 (the bent portion toward the front). Side restricting portion 162 is formed by a bolt. Inserting the side restricting portion 162 (V) in a through hole formed at the left end portion of the front stay 161, by fastening the front nut 161a, the side restricting portion 162 is secured to the front stay 161. At this time, by changing the tightening amount of the front nut 161a of the side restricting portion 162, (fixed position relative to the cover member 130) the position of the side restricting portion 162 can be adjusted arbitrarily to.
[0088]
　Rear stay 163 is a substantially plate-shaped member. Rear stay 163 is fixed to the rear end portion of the cover member 130. The left end of the rear stay 163 is bent toward the rear. The left end of the rear stay 163 (portion bent toward the rear), the through hole for inserting the side regulating portion 164 after that will be described later (not shown) is formed, the position corresponding to the through hole rear nut 163a is fixed to.
[0089]
　Rear restricting portion 164, the rear stay 163 is a portion that protrudes to the left. Rear restricting portion 164 is fixed to the left end of the rear stay 163 (the bent portions toward the rear). Rear restricting portion 164, like the side restricting portion 162 is formed by a bolt. Inserting the rear restricting portion 164 (V) in a through hole formed on the left end of the rear stay 163, by fastening the rear nut 163a, is secured to the rear side regulating unit 164 is rear stay 163 that. In this case, after the tightening of the side nut 163a after the side regulating unit 164 by changing the it can be adjusted arbitrarily (fixed position relative to the cover member 130) position of the rear side regulating unit 164.
[0090]
　In a state in which the tractor 1 is the steering angle of the front wheels 4 as straight it is adjusted, as shown in FIG. 8 (a), the front stay 161 and the rear stay 163 is formed so as to be back and forth substantially symmetrical . In this state, the distance x1 between the flange portion 32a and a side restricting portion 162, to be greater than the distance x2 between the flange portion 32a and the rear-side restriction portion 164 (i.e., the direction of side restricting portion 162 , so that the position away from the flange portion 32a than the rear restricting portion 164), side restricting portion 162 and the rear side regulating portion 164 are arranged, respectively.
[0091]
　The thus-configured restriction mechanism 160, rotation of the cover member 130 due to the rotation of the base member 110 is restricted.
[0092]
　Hereinafter, the fender support structure 100 configured as described above will be described how the rotation of the front wheel fender 10 is restricted.
[0093]
　As shown in FIG. 8 (b) and 9 (a), when the front wheel 4 to the left is (are front wheel 4 so as to face inside the vehicle body of the tractor 1) steering, the cover member with the base member 110 130 It is also rotated to the left (viewed counterclockwise). Thus, the front wheel fender 10 supported by the cover member 130, will also rotate with the steering of the front wheels 4. Then, when the steering angle to the left front wheel 4 becomes a predetermined value (steering angle A1), side restricting portion 162 comes into contact with the flange portion 32a. Thus, rotation of the cover member 130 is restricted.
[0094]
　When side restricting portion 162 is further front wheels 4 from contact with the flange portion 32a is steered to the left, the base member 110 although rotated leftward, the cover member 130 is restricted by the front restriction portion 162 can not be rotated. Therefore, the cover member 130 is not being rotated, only the base member 110 is rotated with the steering of the front wheels 4. In this state, when viewed relatively, the cover member 130 will be rotated in a plan view clockwise relative to the base member 110 (see FIG. 6). Thus, the side restricting portion 162, against the holding force of the holding mechanism 150, so that the rotation of the cover member 130 is restricted.
[0095]
　Thus, in the state where the side restricting portion 162 comes into contact with the flange portion 32a, the front wheel fender 10 without rotating, only the front wheels 4 are steered leftwards (see FIG. 9 (b)). Thus, in predetermined steering angle A1, since the rotation of the front wheel fender 10 is restricted, it is possible to the front fender 10 can be inhibited from interfering with the vehicle body of the tractor 1 (bonnet 7, etc.). In particular, in this embodiment, the front end of the front wheel fender 10, which is formed so as to be located further forward than the front end of the front wheel 4, on the front fender 10 Bonnet 7 upon steering the front wheel 4 to the left interference easily. Therefore, (configured to restrict rotation of the front wheel fender 10) the fender support structure 100 as in this embodiment are particularly useful.
[0096]
　Further, as shown in FIG. 8 (c) and FIG. 10 (a), the the front wheel 4 to the right is (are front wheel 4 so as to face outside the vehicle body of the tractor 1) steering, together with the base member 110 covers member 130 is also rotated to the right (viewed clockwise). Thus, the front wheel fender 10 supported by the cover member 130, will also rotate with the steering of the front wheels 4. Then, when the steering angle to the right of the front wheel 4 becomes a predetermined value (steering angle A2), the rear restricting portion 164 comes into contact with the flange portion 32a. Thus, rotation of the cover member 130 is restricted.
[0097]
　When the rear restricting portion 164 is further front wheels 4 from contact with the flange portion 32a are steered to the right, although the base member 110 is rotated to the right, the cover member 130 is regulated by the rear side regulating unit 164 can not be that by turning the. Therefore, the cover member 130 is not being rotated, only the base member 110 is rotated with the steering of the front wheels 4. In this state, when viewed relatively, the cover member 130 will be rotated in a plan view counterclockwise relative to the base member 110 (see FIG. 7). Thus, the side restricting portion 162, against the holding force of the holding mechanism 150, so that the rotation of the cover member 130 is restricted.
[0098]
　In this manner, a state where the rear restricting portion 164 comes into contact with the flange portion 32a, the front wheel fender 10 without rotating, only the front wheels 4 are steered to the right (see Figure 10 (b)). Thus, in predetermined steering angle A2, since the rotation of the front wheel fender 10 is restricted, it is possible to the front fender 10 can be inhibited from interfering with the vehicle body of the tractor 1 (bonnet 7, etc.).
[0099]
　Further, as shown in FIG. 8 (a), since the direction of the front restricting portion 162 is configured such that the position away from the flange portion 32a than the rear restricting portion 164, the steering angle A1 (Fig. 8 (b) reference) greater than the steering angle A2 reference (FIG. 8 (c)). That is, the steering wheel 4 is steered angle A1 of rotation of the front wheel fender 10 is restricted when it is steered to the left, the front wheel 4 is rotated in the front fender 10 when it is steered to the right is restricted It is set to be larger than the angle A2. This can be done body shape of the tractor 1 (in particular, the shape of the hood 7) the regulation of the rotation of the right front wheel fender 10 according to the.
[0100]
　That is, generally the hood 7 is formed in a pointed shape (shape lateral width becomes narrow toward the front). Therefore, as compared with the case of rotating the front wheel fender 10 to the right, towards the case of rotating leftward, that the front wheel fender 10 and bonnet 7 is hardly interfere, to secure a large pivot angle it can. Therefore, the steering angle A1 is set to be larger than the steering angle A2, while preventing interference of the front fender 10 and bonnet 7, the front wheel fender 10 is as much as possible following the front wheels 4, mud by the front wheels 4 roots and the like can be effectively prevented.
[0101]
　Incidentally, since it is configured in the same manner (symmetrically and right fender support structure 100) also fender support structure 100 for supporting the front wheel fender 10 of the left side, similarly, effectively preventing such splashing mud by the front wheels 4 can do.
[0102]
　As mentioned above, the fender support structure 100 according to this embodiment,
　a base member 110 which rotates with the steering of the front wheel 4 (first rotating body),
　can be relatively rotated with respect to the base member 110, the front wheel 4 the cover member 130 for supporting the front wheel fender 10 (fender) covering the (second rotating body)
　accommodated in the base member 110 and the cover member 130, relative to said base member 110 of the cover member 130 the a rotational position, a holding mechanism 150 for generating a retaining force to be held at a predetermined initial position,
　when the steering angle of the front wheel 4 is turned on the left and right above the predetermined value, against the retaining force a restricting mechanism 160 which restricts the rotation of the cover member 130 due to the steering of the front wheel 4 Te
　are those having a.
　With this configuration, it is possible to suppress the interference of the front wheel fender 10 with the steering to the left and right front wheels 4. In particular, not only when the front wheel 4 is steered in one direction, because the interference of the front wheel fender 10 even when it is steered in the other direction can be suppressed, thereby improving the degree of freedom of the shape of the front fender 10 be able to.
　Further, the holding mechanism 150 that accommodates the base member 110 and the cover member 130, the foreign matter in the holding mechanism 150 (water, mud, dust, etc.) can be prevented from adhering, preventing thus occurrence of defects can do.
[0103]
　Further, the fender support structure 100,
　in which further comprises a seal member 140 for sealing between said cover member 130 and the base member 110.
　With this configuration, it is possible to prevent foreign material from entering the interior of the holding mechanism 150 and the base member 110, the foreign matter to the holding mechanism 150 can be effectively prevented from adhering.
[0104]
　Further, the cover member 130,
　is intended to be arranged to cover the base member 110 from the top and sides.
　With this configuration, the upper surface of the base member 110 can prevent contaminants from being deposited, it is possible to prevent foreign material from entering the interior of the holding mechanism 150 and the base member 110 effectively.
[0105]
　Further, the holding mechanism 150 is
　formed to protrude body portion 153a is wound in a coil shape having a substantially axis parallel to the rotational axis 120 of the cover member 130, and from the main body portion 153a in the radial direction and both end portions (the upper portion 153b and lower portion 153c) the torsion spring 153 having,
　fixed to said base member 110, wherein one of the both end portions engagable with the first fixed shaft 151 (first fixing portion) When,
　fixed to the cover member 130, and the other one can be engaged second fixed shaft 152 (second fixing portion) of the both end portions
　are those having a.
　With this configuration, it is possible to obtain the holding force with a simple configuration.
[0106]
　Further, the fender support structure 100,
　the housed in the base member 110 and the cover member 130, in which further comprises a first bushing 131 (protective member) that covers the torsion spring 153 from the radially outer side.
　With this configuration, the torsion spring 153 can be prevented from interfering with other members (the cover member 130, etc.), preventing thus deformation or damage such the torsion spring 153 and the cover member 130 can.
[0107]
　Also, the first fixed shaft 151 and the second fixed shaft 152,
　is formed in a substantially parallel bar-shaped and the pivot shaft 120 of the cover member 130, in a state in which the cover member 130 is in the initial position, said end either part of (upper portion 153b and lower portion 153c) is also intended to be engaged.
　With this configuration, it is possible to obtain the holding force with a simple configuration. That is, it is possible front wheel 4 even steered in either the left and right, first fixed shaft 151 and the second fixed shaft 152, to obtain the holding force engages in one of both end portions of the torsion spring 153 . Thus, regardless of the steering direction of the front wheels 4, it is possible to obtain the holding force by the two fixing portions (first fixed shaft 151 and the second fixed shaft 152) and the torsion spring 153.
[0108]
　Further, the both end portions (upper end portions 153b and lower portion 153c) are
　those which are formed so as to protrude toward said from the body portion 153a radially inwardly.
　With this configuration, it is possible to easily obtain a high holding force. That is, the both end portions by forming the inside of the main body 153a, it is possible to easily increase the diameter of the main body portion 153a wound in a coil shape. Thus, the restoring force of the torsion spring (holding force) is easily ensured.
[0109]
　Further, the regulating mechanism 160,
　based on the steering angle of the front wheel 4 in a state where the vehicle goes straight, the when the front side of the front wheel 4 is the cover member 130 rotates with the vehicle body inner is restricted steering angle A1 of the front wheel 4, the rear side of the front wheel 4 is formed to be larger than the steering angle A2 of the front wheel 4 when the cover member 130 rotates with the vehicle body inner is restricted it is intended.
　With this configuration, it is possible to follow the front wheel fender 10 to the front wheels 4 more appropriately. That is, normally, the vehicle body (e.g., hood 7) the width of the front is formed narrower than the width of the rear, when the front side of the front wheel 4 is rotated to the vehicle body inside, after the front wheel 4 side is as compared with the case of turning to the body of the inner, it is possible to further approach the front fender 10 to the vehicle body. Therefore, when the front side of the front wheel 4 is rotated to the vehicle body inside, by restricting the cover member 130 at a larger steering angle, it is made to follow the front wheel fender 10 to the front wheels 4 in a wide turning range it can.
[0110]
　Further, the restricting mechanism 160 is
　fixed to the cover member 130, the cover member 130 by contact with the vehicle body portion when the front side of the front wheel 4 is rotated to the vehicle body inward by predetermined steering angle A1 side restricting portion 162 for restricting the rotation (first regulating portion)
　is fixed to the cover member 130, the portion in the rear side of the front wheel 4 is rotated to the vehicle body inward by predetermined steering angle A2 , the side regulating portion 164 (second regulation portion) after restricting the rotation of the cover member 130 by contact with
　those having a.
　With this configuration, it is possible to restrict the rotation of the cover member 130 with a simple configuration.
[0111]
　Further, the regulating mechanism 160,
　and further comprising the side restricting portion 162 and the cover member can change adjusting mechanism fixed position relative to 130 of the rear-side regulating unit 164 (the front nut 161a and the rear nut 163a) is there.
　With this configuration, it is possible to arbitrarily change the steering angle of the front wheel 4 rotation of the cover member 130 is restricted. Thus, the body shape and work, it is possible to set in accordance with the preferences of workers.
[0112]
　Moreover, it said portion is
　a joining portion of the case of the front axle mechanism 30 for transmitting power to the front wheel 4 (the bevel gear case 32) (flange portion 32a).
　With this configuration, side restricting portion 162 and the rear side regulating unit 164 is facilitated to confirm the abutting portion (flange portion 32a). Thus, it becomes easy to adjust the position of the side restricting portion 162 and the rear-side regulating unit 164.
[0113]
　Further, the fender support structure 100,
　a steering angle of the front wheel 4 is, in a state where the vehicle is a steering angle at which the straight,
　towards said side restricting portion 162 from the flange portion 32a than the rear side regulating unit 164 in which it is located away in the left-right direction.
　With this configuration, it is possible to follow the front wheel fender 10 to the front wheels 4 more appropriately.
[0114]
　Further, tractor 1 (work vehicle) are those having a fender support structure 100.
　With this configuration, it is possible to suppress the interference of the front wheel fender 10 with the steering to the left and right front wheels 4.
[0115]
　Further, the front wheel fender 10,
　the front end is intended to be formed so as to be located further forward than the front end of the front wheel 4 in the longitudinal direction.
　With such a configuration, mud of the front wheel 4 it, in particular, it can be effectively suppressed mud wings during backward.
[0116]
　The base member 110 of the present embodiment is an embodiment of the first rotary body according to the present invention.
　Further, the front wheel fender 10 of the present embodiment is an embodiment of the fender according to the present invention.
　The cover member 130 according to this embodiment is an embodiment of the second rotary member according to the present invention.
　The upper end portion 153b and lower portion 153c of the present embodiment is an embodiment of both end portions of the torsion spring according to the present invention.
　The first stationary shaft 151 according to the present embodiment is an embodiment of the first fixing part according to the present invention.
　The second fixed shaft 152 of the present embodiment is an embodiment of the second fixing unit according to the present invention.
　Further, side restricting portion 162 according to the present embodiment is an embodiment of the first restricting portion according to the present invention.
　Further, the side regulating portion 164 after according to the present embodiment is an embodiment of the second restricting portion according to the present invention.
　Further, the front nut 161a and the rear nut 163a according to the present embodiment is an embodiment of the adjusting mechanism according to the present invention.
　The flange portion 32a of the bevel gear case 32 according to this embodiment is an embodiment of the junction of the case of the front axle mechanism according to the present invention.
　The first bushing 131 of the present embodiment is an embodiment of the protective member according to the present invention.
[0117]
　Having described an embodiment of the present invention, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the appended claims.
[0118]
　For example, restriction mechanism 160 is not limited to the configuration of the present embodiment, when the steering angle of the front wheels 4 becomes on the left and right than a predetermined value, which can be regulated rotation of the cover member 130 it is sufficient. Further, site-side restricting portion 162 and the rear side regulating portion 164 abuts is not limited to the flange portion 32a of the front axle mechanism 30 can be set arbitrarily.
[0119]
　Although the changeable fixing position of the side restricting portion 162 and the rear side regulating portion 164 with a nut (front nut 161a and the rear nut 163a) In the present embodiment, the present invention is not limited thereto, it is possible to change the fixed position of such side restricting portion 162 in any manner.
[0120]
　In the present embodiment, the steering angle A1 is, it is assumed to be formed to be larger than the steering angle A2, the present invention is not limited to this, the steering angle A1 and the steering angle A2 is tractor 1 It can be appropriately set according to the shape (shape of the bonnet 7) or the like.
[0121]
　In the present embodiment, the front end of the front wheel fender 10, it is assumed being formed so slightly positioned in front of the front end of the front wheel 4 (see FIG. 1), the present invention is not limited thereto . For example, as in the first modification shown in FIG. 11 (a), in the longitudinal direction, the front end of the front wheel fender 10, it is also possible to place at the same position Y and the front end of the front wheel 4. Thus, the front end of the front wheel fender 10 is either identical to the front end of the front wheels 4, the front end of the front wheel 4 is formed so as to be positioned in front, it is mud by the front wheels 4, in particular, mud during reverse travel vane can be effectively prevented.
[0122]
　Also, as in the second modification shown in FIG. 11 (b), the front wheel fender 10, it is also possible to form so as to cover more than half of the outer periphery of the front wheel 4. More specifically, in a side view, more than half of the outer periphery of the front wheel 4 (i.e., the range of more than 180 degrees about the rotation axis of the front wheels 4), also to form a front fender 10 to cover the outside possible it is. With this configuration, it is possible to cover a wide range of the outer periphery of the front wheel 4, it is possible to effectively suppress the mud wings of the front wheel 4.
[0123]
　In the present embodiment, the rotary shaft of the front wheel fender 10 (i.e., the rotary shaft 120 of the cover member 130), coincides with the axis of the rotation shaft of the front wheel 4 (i.e., the rotary shaft of the front wheel case 33) It is to be placed such that, but the present invention is not limited thereto.
[0124]
　For example, as shown in FIG. 12 (a), the pivot shaft of the front wheel fender 10 and (C1 in FIG. 12), the rotary shaft of the front wheel 4 and a (C2 in FIG. 12), can be disposed in different positions it is. Specifically, in the example shown in FIG. 12, the rotation axis C1 of the front wheel fender 10 is set so as to be located on the outside (the front wheel 4 side) of the rotation axis C2 of the front wheel 4. With this configuration, as shown in FIG. 12 (b) and FIG. 12 (c), the less likely to interfere with the front wheel fender 10 Gayori body of the tractor 1 (bonnet 7, etc.). Further, since the displacement of the front wheel fender 10 and the front wheel 4 is reduced, it is possible to prevent mud wings by the front wheels 4 more effectively. From this point of view, the rotation axis C1 of the front wheel fender 10 is preferably set to minimize a position closer to the widthwise center of the front wheel 4.
[0125]
　In this embodiment also, both ends of the torsion spring 153 (the upper end portion 153b and lower portion 153c), the cover member 130 is in a state in an initial position, and shall be formed to extend in parallel plan view (FIG. 5 reference), but the invention is not limited thereto.
[0126]
　For example, as in a modification shown in FIG. 13, both ends of the torsion spring 153 (the upper end portion 153b and lower portion 153c) is mutual clearance is (close to each other) smaller toward the front end (radially inner side) so or it may be formed. By arranging the first fixed shaft 151 and the second fixed shaft 152 in the gap, the first fixed shaft 151 and the second fixed shaft 152, easily engaged with the both end portions (upper end portions 153b and lower portion 153c) Become. This can engage with the first fixed shaft 151 and the second fixed shaft 152 and the end portions is prevented from being released unintentionally by shaking of the vehicle body or the like.
[0127]
　In this case, the gap between the upper portion 153b and the lower portion 153c in plan view is larger as radially outward. In this case, therefore, as in the modification shown in FIG. 13, of the first fixed shaft 151 and the second fixed shaft 152, which is located radially outwardly (in the present embodiment, the second fixed shaft 152) the diameter of the it is preferable to increase. That is, in a state in which the cover member 130 is in the initial position, none of the first fixed shaft 151 and the second fixed shaft 152 is in contact with the upper end portion 153b and the lower end portion 153c (engagement) way, the first fixing it is desirable to set the diameter of the shaft 151 and the second fixed shaft 152 as appropriate. Thus, the rotational position of the cover member 130 can be appropriately generate the holding force for holding the initial position.
[0128]
　As mentioned above, both end portions of the torsion spring 153 according to a modification (the upper end portion 153b and lower portion 153c) is
　in a state in which the cover member 130 is in the initial position, the axial direction of the rotation shaft 120 of the cover member 130 after seeing, is formed so as to approach each other toward the radially inward,
　the first stationary shaft 151 and the second fixed shaft 152,
　in which is disposed between said end portions.
　With this configuration, it is possible to easily and first fixed shaft 151 and the second fixed shaft 152 and the end portions engage.
[0129]
　Also, the first fixed shaft 151 and the second fixed shaft 152,
　is formed in a cylindrical shape extending substantially parallel to the rotational axis 120 of the cover member 130,
　the first fixed shaft 151 or the second fixed shaft 152 of the second fixed shaft 152 (the one located radially outward) are those formed such that the diameter is greater than the first fixed shaft 151 (the one located radially inward).
　With this configuration, the rotational position of the cover member 130 can be appropriately generate the holding force for holding the initial position.
[0130]
　In the above embodiment, the torsion both ends of the spring 153 (the upper end portion 153b and lower portion 153c) is the plan view (FIG. 5 or FIG. 14) positioned proximate the (first fixed shaft 151 and the second fixed shaft 152 an example is shown which is arranged at a position) sandwiching the present invention is not limited thereto, as long as the restoring force for returning the cover member 130 to the initial position (holding force) can be obtained. For example, both ends of the torsion spring 153, it is also possible to arrange at a distance from each other (e.g., 180 degrees from the position or the like about the rotation shaft 120).
[0131]
　The configuration of the holding mechanism 150 is not limited to the above embodiments, as long as it can generate a holding force to be holding the cover member 130 to the initial position. For example, instead of the torsion spring 153, it is also possible to use various other biasing member.
[0132]
　In the above embodiment has been described by way of tractor 1 as a work vehicle, the present invention can be applied to various other work vehicles (agricultural vehicles, construction vehicles, industrial vehicles and the like).
Industrial Applicability
[0133]
　The present invention is applicable fender support structure for supporting a fender for covering the front wheels, and a work vehicle comprising it.
DESCRIPTION OF SYMBOLS
[0134]
　1 tractor
　4 wheel
　10 wheel fender
　30 front axle mechanism
　32 bevel gear case
　32a flange portion
　100 fender support structure
　110 base member
　130 covering member
　150 holding mechanism
　151 first fixed shaft
　152 second fixed shaft
　torsion 153 spring
　153a body portion
　153b upper end
　153c lower portion
　160 restricting mechanism
　162 side restricting portion
　164 rear restricting portion

The scope of the claims
[Requested item 1]A first rotating body that rotates along with the front wheel steering,
　can be relatively rotated with respect to said first rotary member, a second rotary body supporting a fender for covering the front wheel,
　said first rotary body and is accommodated in the second rotating body, a relative rotational position with respect to the first rotary member of said second rotary member, and a holding mechanism for generating a retaining force to be held at a predetermined initial position,
　the front wheel when the steering angle becomes on the left and right than a predetermined value, and a restriction mechanism for restricting the rotation of said second rotary member with the steering of the front wheel against the holding force
　fender support structure having a.
[Requested item 2]
　Further comprising a sealing member for sealing between the said second rotary member and the first rotation body,
　the fender support structure according to claim 1.
[Requested item 3]
　The second rotating body is
　the first rotating body is disposed to cover the top and sides,
　fender support structure according to claim 1 or claim 2.
[Requested item 4]
　The holding mechanism includes
　having the second time body portion wound in a coil shape having a substantially axis parallel to the rotation axis of the body, and both end portions which are formed so as to protrude radially from said body portion and a torsion spring,
　fixed to said first rotating body, and either can be engaged first fixing part of the end portions,
　is fixed to the second rotary member, the other one engages the end portions a second fixing part capable,
　comprising a
　fender supporting structure according to any one of claims 1 to 3.
[Requested item 5]
　Wherein the first rotary member and is accommodated in the second rotating body further comprises a protective member for covering the torsion spring from radially outside,
　fender support structure of claim 4.
[Requested item 6]
　Said first fixing part and said second fixing portion,
　the formed substantially parallel to the rod-shaped and rotating axis of the second rotary member, in a state where the second rotary member is in said initial position, either of the end portions also it engages the,
　fender support structure according to claim 4 or claim 5.
[Requested item 7]
　Said end portion,
　the formed so as to protrude toward the main body portion radially inwardly,
　fender support structure according to any one of claims 4 to claim 6.
[Requested item 8]
　Said end portion,
　in a state where the second rotary member is in said initial position, as viewed from the axial direction of the rotation axis of said second rotary member, formed as mutual clearance is reduced radially inward It is,
　the first fixing part and said second fixing part,
　the are arranged in the gap,
　the fender support structure of claim 7.
[Requested item 9]
　It said first fixing part and said second fixing part,
　the second rotating body is substantially formed in a cylindrical shape extending in parallel to the rotation axis of
　the first fixing part or of the second fixing portion, radially outward those located in the diameter than those located radially inward is formed to be larger,
　fender support structure according to claim 8.
[Requested item 10]
　The regulating mechanism
　based on the steering angle of the front wheel in a state where the vehicle goes straight, the steering angle of the front wheels when the front wheels of the front said rotated second rotating body is restricted to the vehicle body inner but the rear side of the front wheels is formed to be larger than the front wheel steering angle when the rotation to the second rotary member to the vehicle body inner is restricted,
　according claim 1 to claim 9 fender support structure according to any one of up to.
[Requested item 11]
　The regulating mechanism is
　fixed to said second rotating body, rotation of the second rotary member by abutting on the vehicle body portion when the front wheel of the front is rotated by a predetermined steering angle and the vehicle body of the inner a first regulating portion for regulating a
　fixed to said second rotary member, said portion and said second rotary member by abutting when the rear side of the front wheel is rotated by a predetermined steering angle and the vehicle body of the inner and a second regulating portion for regulating a rotation of
　comprising a
　fender supporting structure according to any one of claims 1 to 10.
[Requested item 12]
　The regulating mechanism
　further comprises said first restricting portion and the second regulating portion of the second time can change adjusting mechanism fixed position relative to the moving object,
　the fender support structure of claim 11.
[Requested item 13]
　It said portion,
　a joint portion of the case of the front axle mechanism for transmitting power to the front wheel,
　fender support structure according to claim 11 or claim 12.
[Requested item 14]
　Steering angle of the front wheel, in a state where the vehicle is a steering angle at which the straight,
　towards the first regulating portion than said second restricting portion is located away in the lateral direction from said portion,
　claim 11 fender support structure according to any one of up to claim 13.
[Requested item 15]
　A work vehicle comprising a fender supporting structure according to any one of claims 1 to 14.
[Requested item 16]
　The fender has
　its front end, it is formed so as to be located further forward than the front and rear same front end of the front wheel in the direction, or the front wheel front end,
　the work vehicle according to claim 15.
[Requested item 17]
　The fender,
　the front wheels of the outer half is formed so as to cover above,
　the work vehicle according to claim 15 or claim 16.