[0001]The present invention relates to an elevator.
BACKGROUND
[0002]Currently, an elevator, which is the most popular is a traction elevator. In traction elevator hoist drives the car and the counterweight unit through the rope. Depending on how hanging rope, sometimes pulley provided on the counterweight device for an elevator. According to the safety standards of some national or regional, in order to prevent the entrainment of the finger or the like of the operator, to cover the pulley by a cover is required.
[0003]
　In counterweight device Patent Document 1 has been published, a pulley is provided in the groove of the upper frame portion 20 and the vertical frame portion 18 of the counterweight frame which is formed from the groove-shaped steel (publication Figure 1 reference). In this structure, it is possible to the upper frame section 20 and the vertical frame portion 18 covers the sides and upper part of the pulley, it is possible to prevent the finger or the like of the worker is involved in a pulley. As shown in Figure 1 of the publication, in the counterweight system, the rotation plane of the pulley is parallel to the longitudinal direction of the upper frame portion 20. Therefore, if the thickness of the pulley is smaller than the width of the upper frame portion 20 and the vertical frame portion 18, can be placed the pulley in the groove of the upper frame portion 20 and the vertical frame portion 18, the upper frame portion 20 it is possible to use a vertical frame section 18 as a safety cover and.
[0004]
　Here, the "rotation plane", a point away from the axis of rotation of the pulley means a flat trajectory (circle) rests drawn during rotation. Normal plane of rotation is parallel to the rotation axis of the pulley. Although the one pulley has countless rotation plane, since these rotational planes parallel to each other, when considering the direction of the rotation plane of the pulley, it may be investigated them one of the plane of rotation.
CITATION
Patent Document
[0005]
Patent Document 1: JP 2013-49530 JP
Summary of the Invention
Problems that the Invention is to Solve
[0006]
　If the hoistway of an elevator is narrow, for example in the hoistway of the machine room less elevator must be installed car, counterweight device, such as a hoist various devices in a narrow space. In this case, such cleverly and rationally designed for running direction and angle of the rope, it is necessary to adjust the running direction and angle of the rope with the pulley through which the rope. It must therefore be installed pulley so that the rotational plane of the pulley forms a longitudinal and a predetermined angle of the upper frame portion of the counterweight frame in some cases. In such a case, the space occupied by the pulley in the width direction of the upper frame portion is increased, it becomes impossible to install the pulley in the groove of the upper frame portion and the vertical frame portion. There is also believed to provide a safety cover dedicated box-for pulleys, but the horizontal projection of the safety cover becomes a box-type is that protrude significantly from the horizontal projection of the other portions of the counterweight unit. Sonaruto, when the counterweight unit is moved vertically, and other devices of the safety cover and the hoistway (e.g., car) can not be ensured required gap dimension between, tends to collide.
[0007]
　An object of the present invention is that the finger or the like of the worker at the same time can be prevented from being caught in the pulley, to provide an elevator which can ensure required gap dimension between the counterweight device and other devices .
Means for Solving the Problems
[0008]
　In order to achieve the object, the elevator of the present invention includes: a car for lifting a hoistway, a counterweight device which is connected with the cab through the rope, the car and the counterweight through the rope an elevator comprising a hoisting machine that drives the device, wherein the counterweight unit is provided in the upper frame of the counterweight frame by a bracket, rotating plane predetermined between the longitudinal direction of the upper frame an angle, a pulley the rope is wound, consists of longitudinal direction by a plurality of plate-like portions cover separable, are secured to the bracket, a winding preventing cover for covering the side surface of the pulley, has a bent portion at an end portion of the next to each said partial covering of the horizontal projection projecting outwardly from the horizontal projection of the bracket, the horizontal projection of the bent portion is a horizontal projection of the bracket And a winding prevention cover adjacent.
The invention's effect
[0009]
　Winding prevention cover the elevator provided according to the present invention covers the side surface of the pulley, a finger or the like of the operator can be prevented from being caught in the pulley. The ends of the transverse of the winding preventing cover, there is a bent portion adjacent to the bracket, to reduce the overhang amount of rolling preventing cover protrudes outward (in particular riding direction of the car) from the bracket, the winding required gap dimension between the car or other equipment and ride write preventing cover can be secured, it is possible to prevent collisions.
[0010]
　Other problems mentioned above, and advantages will become apparent from the following description of embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011]
FIG. 1 is a schematic view schematically showing one embodiment of the present invention the elevator.
The structure of FIG. 2 counterweight device of the present invention the elevator is a schematic view schematically showing.
FIG. 3 is an enlarged schematic view of a pulley near the structure shown in FIG.
It is a plan view of a counterweight apparatus shown in FIG. 4 FIG.
[5] The state of removing the winding preventing cover from counterweights apparatus shown in FIG. 2 schematically shows.
DESCRIPTION OF THE INVENTION
[0012]
　The present invention will be described through embodiments of the invention based on the drawings.
[0013]
　Figure 1 is a schematic view schematically showing one embodiment of the present invention the elevator. As shown in FIG. 1, the elevator 100 includes a hoistway 102, the car 104, the counterweight 106 and the hoisting machine 110. Elevator 100 is a machine room-less elevator, the hoisting machine 110 is installed in the hoistway. Car 104 and the counterweight unit 106 is connected through a rope 108. Rope 108 is subjected to a sheave of the hoisting machine 110, hoisting machine 110 drives the car 104 and the counterweight unit 106 through the rope 108, elevating the hoistway 102.
[0014]
　Figure 2 is a schematic diagram showing the structure of a counterweight device of the present invention an elevator schematically. Figure 2 is composed of a front view and a right side view of the right-to-left. As shown, the counterweight 106 includes a counterweight frame 202, weight 204, pulley 206 and the winding prevention cover 220. Counterweight frame 202 is configured mainly two vertical frame 202a, the upper frame 202b and the lower frame 202c. Inside the counterweight frame 202, a plurality of weights 204 are mounted. Pulley 206 is provided on the upper frame 202b by a plurality of brackets, it has rope 108 is wound around. The side surface of the pulley 206, the winding prevention cover 220 is provided.
[0015]
　Figure 3 is an enlarged schematic view of a pulley near the structure shown in FIG. Figure 4 is a plan view of a counterweight device shown in FIG. To illustrate the relative positional relationship between the counterweight 106 and the other parts of the elevator, also shows the car 104 and the closest hoistway wall 102a in FIG. Note that displayed by a dashed line rotation plane 400 is also two points of the pulley 206 in FIG. Further, for easy understanding of the structure of a bracket for fixing the shape and the pulleys 206 of the wind-preventing cover 220, FIG. 5 is taken off, the entrainment preventive cover from the counterweight device shown in FIG. 2 schematically show.
[0016]
　As shown in FIG. 4, in this embodiment, it has a predetermined angle θ (0 ° <θ <90 °) between the longitudinal rotation plane 400 of the upper frame 202b of the pulley 206. Angle θ is determined by the running direction and angle of the rope 108 to be set by a pulley 206.
[0017]
　As shown in FIGS. 2-5, a pulley 206 is attached to the upper frame 202b by a plurality of brackets. The bracket includes a first bracket 212, the second bracket 214, a third bracket 215, a third bracket 216 and a fourth bracket 218. The first bracket 212 is the base plate is fixed to the upper frame 202b by an angle and a bolt or the like. The second bracket 214 is a channel steel, the opening is fixed to the first bracket 212 facing up. The third bracket 215 and the third bracket 216 plate-shaped is fixed vertically to the two groove walls of the second bracket 214, respectively. Pulley 206, a third bracket 215 is provided between the third bracket 216, the rotary shaft and the third bracket 215 by the third bracket 216 is supported. The fourth bracket 218 is a channel steel, across pulleys 206, connects the third bracket 215 and the third bracket 216 from above. The fourth bracket 218 is not only to strengthen the support for two third bracket can also be prevented entrainment finger or the like of the operator, it is also possible to block the dust to fall on the pulley 206 becomes the cover.
[0018]
　As shown in FIGS. 3 and 4, in the vicinity of the edge portions of the left and right pulley 206, the ropes off preventing plate 232 and the rope off preventing plate 234 are provided respectively. Left and right edge portions of the pulley 206, the ropes 108 each being a portion that leaves the site and Tsunamizo entering the rope grooves of the pulley 206. In these sites, the ropes 108 is easily disengaged from the rope grooves of the pulley 206. By providing the baffle plate 232 and the rope off preventing plate 234 off the rope, it is possible to prevent the rope 108 is disengaged from the rope grooves of the pulley 206. Further, in order to block the dust falling to the pulley 206, the left and right ends of the fourth bracket 218, and dust cover 236 and the dust cover 238 is provided.
[0019]
　In the present specification, the orientation of the components, used to represent the position or the like "upper", expressions such as "down", "left", "right", relative orientation between the components in essentially the drawings , which represents the position or the like, not intended to indicate absolute position unless otherwise specified.
[0020]
　As shown in FIGS. 2 and 3, the biggest feature of the counterweight 106 of the present embodiment the elevator is that the rolling prevention cover 220 is provided. Winding preventing cover 220, the vertical direction in two parts cover separable, i.e. constituted by the top cover 222 and bottom cover 224. The upper cover 222 and lower cover 224 is plate-shaped. The upper cover 222 and lower cover 224 is fixed to the third bracket 215 by bolts, to cover the one side surface of the pulley 206 (a side facing the car 104). Thereby preventing the finger of the operator is caught between the pulley 206 and the rope 108. A plate-like winding preventing cover 220 has a simple structure, low cost.
[0021]
　In this embodiment, the other side of the pulley 206 faces the hoistway walls 102a, noted a small distance between the counterweight 106 and the hoistway wall 102a, workers and counterweights 106 since no working enters between the hoistway wall 102a, the side facing the hoistway wall 102a of the pulley 206 is not provided with the entrainment prevention cover.
[0022]
　As is well known, the car and the counterweight device for an elevator to move up and down in the hoistway. To ensure that both during the vertical movement is not conflict, between both the horizontal projection it is necessary to open at least a certain distance.
[0023]
　As shown in FIGS. 3 and 4, has a bent portion 222a next to the end of the upper cover 222 horizontal projection protrudes outward from the horizontal projection of the bracket as described above, the horizontal projection of the bent portion 222a There close to the horizontal projection of the bracket described above.
[0024]
　Next, specifically described the contents of this part with reference to FIGS. 3 and 4. 4, since the plan view, it represents a horizontal projection of each portion of the elevator 100. As shown in FIG. 4, the bracket described above maximum outline of the horizontal projection of (the first bracket 212, the second bracket 214, a third bracket 215, third including bracket 216 and a fourth bracket 218) is primarily a horizontal projection of first bracket 212, and a horizontal projection of one corner of the fourth bracket 218 protruding from the scope of the horizontal projection of the first bracket 212 (corner facing downward in FIG. 4).
[0025]
　The top cover 222 is constituted by sheet material. Horizontal projection of the right lateral end of the upper cover 222 in FIG. 3 (see FIG. 4) is protruded from the maximum outline of the horizontal projection of the bracket as described above, namely "outward from the horizontal projection of the bracket described above protruding ". If it is a plate of the upper cover 222 is flat, so that the lateral ends of the right side extending in the direction indicated by the broken line in FIG. Sonaruto, distance between the cage 104 and ride counterweight unit 106 (upper cover 222) is narrowed, the risk that they will collide increases. To solve this problem, in the present embodiment, the bent portion 222a is formed in the lateral end of the right upper cover 222, the horizontal projection of the bent portion 222a is closer to the horizontal projection of the bracket described above .
[0026]
　As shown by the arrows in FIG. 4, the formation of the bent portion 222a, right next to the end of the upper cover 222 is moved to the position indicated by solid lines from the position shown in broken lines. Also horizontal projection of the bent portion 222a is slightly protruded from the maximum outline of the horizontal projection of the bracket as described above, but projecting amount of the top cover 222 to protrude in a direction of the car 104 is significantly reduced. Thereby, it is possible to secure the necessary gap dimension between the cage 104 and ride counterweight unit 106 (upper cover 222), it is possible to prevent collisions.
[0027]
　As shown in FIG. 3, has a bent portion 224a next to the end of the right lower cover 224 horizontal projection protrudes outward from the horizontal projection of the bracket as described above, the horizontal projection of the bent portion 224a close to the horizontal projection of the bracket described above. Horizontal projection of the bent portion 224a of the horizontal projection and the bottom cover 224 of the bent portion 222a of the upper cover 222 overlap. It horizontal projection of the bent portion 224a of the lower cover 224, substantially means that with a change in the same shape as the horizontal projection of the bent portion 222a of the upper cover 222. For example, it says that it has substantially the same bending angle or the same curve. Bent portion 224a of the lower cover 224 has the same effect as the bent portion 222a of the upper cover 222. That greatly reduces the overhang amount protruding direction of the car 104 to ride the bottom cover 224, it is possible to secure the necessary gap dimension between the cage 104 and ride counterweight 106 (the lower cover 224), it is possible to prevent the collision.
[0028]
　Therefore, hoistway narrow, have a predetermined angle θ between the longitudinal direction of the upper frame rotation plane of the pulley of the counterweight device, required gap dimension between the cage and the counterweight unit by installing a winding prevention cover while ensuring, finger or the like of the operator can be prevented from being caught in the pulley.
[0029]
　Since winding prevention cover 220 is divided in the longitudinal direction on the top cover 222 and bottom cover 224, when mounting the rolling preventing cover 220, so easy to adjust the distance between the winding preventing cover 220 and the pulley 206 it can. Specifically, it is possible to first attach the lower cover 224. At this time, from above the lower cover 224, it is possible to see the distance between the bent portion 224a and the pulley 206 of the lower cover 224 directly, the distance between the bent portion 224a and the pulley 206 to facilitate the appropriate interval range it can be adjusted. When mounting the top cover 222, since the bent portion 222a of the upper cover 222 has a bent portion 224a that is substantially the same as the bending angle or the same curve of the lower cover 224, the bent portion 222a of the upper cover 222 by adjusting the outer surface to be substantially flush with the outer surface of the bent portion 224a of the lower cover 224, the inner surface of the bent portion 222a also becomes closer to the inner surface of the bent portion 224a. Thereby, it is possible to the interval between the bent portion 222a and the pulley 206 of the upper cover 222 to facilitate the appropriate interval range. Also, during elevator inspection, simply by removing the upper cover 222, it is possible to check the distance between the bent portion 224a and the pulley 206 of the lower cover 224 can be easily inspected in the gap dimension.
[0030]
　Since winding prevention cover 220 is divided in the longitudinal direction on the top cover 222 and bottom cover 224, the distance between the case and the preventing plate 234 and the pulley 206 out rope to check the distance between the shield plate 232 and the pulley 206 out rope when inspecting the, simply by removing the upper cover 222, to check inspection, it is possible to enhance the inspection efficiency. Incidentally, when replacing the rope 108, so can be replaced by simply removing the lower cover 224, it is possible to enhance the working efficiency. When attaching the lower cover 224 removed, by adjusting so that the outer surface of the bent portion 224a of the lower cover 224 in substantially the same plane as the outer surface of the bent portion 222a of the upper cover 222, a bent portion 224a and the pulley 206 the distance can be readily appropriate interval range.
[0031]
　The present invention is not limited to the embodiments described above, but includes various modifications. For example, the above embodiments are those described in detail in order to better illustrate the invention and are not intended to be limited to those having the necessarily all described configurations. Further, it is possible to replace a part of the configuration of one embodiment in the configuration of another embodiment, it is also possible to add a configuration of an embodiment alternative embodiment to the configuration of. A part of the configuration of each embodiment may be added, deleted, or replaced for other configurations.
DESCRIPTION OF SYMBOLS
[0032]
　100 elevator
　102 hoistway
　102a hoistway wall
　104 cab
　106 counterweight unit
　108 rope
　110 hoisting machine
　202 counterweight frame
　202a vertical frame
　202b upper frame
　202c sill
　204 weight
　206 pulley
　212 first bracket
　214 second bracket
　215 the third bracket
　216 third bracket
　218 fourth bracket
　220 winding preventing cover
　222 upper cover
　222a bent part
　224 lower cover
　224a bent portion
　232 ropes off preventing plate
　234 rope off preventing plate
　236 Dust cover
　238 Dust cover
　400 rotates plane

WE CLAIM

An elevator comprising a car which moves up and down the hoistway, a counterweight device which is connected with the cab through the rope, and a hoisting machine that drives the car and the counterweight device via the rope,
　the counterweight device is
　provided in the upper frame of the counterweight frame by a bracket, a predetermined angle between the rotation plane is the longitudinal direction of the upper frame, a pulley the rope is wound,
　a vertical is composed of a plurality of plate-like portions cover separable in direction, is fixed to the bracket, a winding preventing cover for covering the side surface of the pulley, horizontal projections projecting outwardly from the horizontal projection of the bracket has a bent portion beside the end portion of each of said partial covering, horizontal projection of the bent portion, and the winding prevention cover close to the horizontal projection of the bracket
comprises
, characterized in that d Beta.
[Requested item 2]
　An elevator according to claim 1,
　wherein the wind-preventing cover is configured in the longitudinal direction by two of the partial covering separable, horizontal projection of the bent portions of the two said partial covering overlap
and wherein the elevator to.