[0001]The present invention is used in an elevator apparatus, a safety device of the car by detecting overspeed of the car about the (safety device) elevator speed governor to operate the.
Background technique
[0002]
　The elevator system in general, constantly monitors the lifting speed of the car, the car emergency stop is to governor the elevator car when the fallen to a predetermined overspeed state is provided. Specifically, the speed governor, the lifting speed of the car reaches the first overspeed (usually 1.3 times the rated speed) exceeds the rated speed, the hoisting machine that drives the car power and power control device for controlling the traction machine for blocking respectively. Also, the speed governor, the lowering speed of the elevator car for some reason reaches the second overspeed exceeds the first overspeed (usually 1.4 times the rated speed), very provided car and a stop device is operated, mechanically emergency stop the car.
[0003]
　As a conventional speed governor, it is known elevator governor that is described in JP 53-147350 (Patent Document 1). Elevator governor of Patent Document 1, opposed pendulum (fly weights) is rotated in synchronism with the governor pulley passed over the governor rope, has a structure that opens to the outer peripheral direction by the centrifugal force. When the elevator reaches the first over speed, move the lever pendulum pushes the engaging elements. Engaging lever engaged with the switch contact by the movement of the lever away from the contact, the switch is off. Accordingly, the power source is cut off, over-speed of the car is prevented. Further increase Hayashi, it reaches the second overspeed, the pendulum is in contact with the hook (link mechanism) for holding the wedge (weights) for gripping the governor rope, disengage the pin provided in the hook and wedge, wedge the dropping by its own weight. Fallen wedge between the contact plate attached to the frame, biting the governor rope, to grip the governor rope. Governor rope is gripped, the tension on the governor rope between the cage and the governor to fall occurs, the safety lever is actuated, actuates the safety device of the car (the safety device).
[0004]
　The elevator governor of Patent Document 1, by engaging the pin provided with hooks to the wedge, is held in a state where the hook and the wedge is self-supporting.
CITATION
Patent Literature
[0005]
Patent Document 1: JP Laid-Open Publication No. 53-147350 (page 1, page 2 and even)
Summary of the Invention
Problems that the Invention is to Solve
[0006]
　The elevator governor in Patent Document 1, the pendulum moving the lever by pushing the engaging element is provided two in the governor pulley, the operating point of the governor will be present two on the circumference of the governor pulley. A hook and wedge are held in free standing state, the governor pulley not engaged.
[0007]
　Governor (hereinafter, referred to as the speed governor) in, by using a ratchet mechanism, the operating point of the governor (the inspired operating point) can be increased. In the introduction of the ratchet structure governor, wedge (hereinafter, catch weights hereinafter) and engaged hooks (hereinafter, referred to as the link mechanism), and by connecting the ratchet mechanism, in accordance with the operation number of the ratchet mechanism, can accelerate the timing for releasing the engagement between the link mechanism and the catch weights, the catch weights when the overspeed occurs governor rope (hereinafter, referred to as the governor rope) can advance the timing for gripping the.
[0008]
　On the other hand, in such a structure, the state in which it engages the catch weights a link mechanism, since the link mechanism and catch weights that can hold free-standing state, a state in which the link mechanism and a ratchet mechanism not connected , there is a possibility that the catch weights will be set.
[0009]
　An object of the present invention, the speed governor to hold the state of the link mechanism and catch weights were self, is to make it perform reliably the connection between the link mechanism and the ratchet mechanism.
Means for Solving the Problems
[0010]
　To achieve the above object, the elevator speed governor of the present invention includes: a speed governor rope that moves in conjunction with the elevator car, a sheave in which the governor rope are wound together with the sheave rotated, and the fly weights which posture changes with respect to the sheave in response to the rotational speed of the sheave, the catch weights for gripping the governor rope with another member by dropping from self holding position in the elevator speed governor that includes a first link mechanism in which the connection between the catch weights undergoing change in the posture of the fly weights while being connected to the catch weights is released, the fly weights engage includes a ratchet mechanism having a plurality of triggering operation point, and a circular plate having an engaging portion for the ratchet mechanism integrated with the first link mechanism is engaged to the front Disc, other than the position where the first link mechanism is engaged with the engaging portion, the coupling blocking shaped portion to prevent from becoming the first link mechanism to a posture capable of coupling with the catch weights a.
Effect of the invention
[0011]
　According to the present invention, a disc which is integral with the ratchet mechanism, in addition engaged position of the first link mechanism, holding the first link mechanism connecting is not possible orientation of the first link mechanism and the catch weights by having connecting blocking shaped portion which, to allow reliably connecting linkage (first link mechanism) and a ratchet mechanism, it is possible to reliably set the catch weights.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012]
FIG. 1 is a schematic configuration diagram of an elevator apparatus according to the present invention.
FIG. 2 is a schematic view of a first embodiment of the elevator speed governor according to the present invention.
FIG. 3 is a front view showing an enlarged part of the elevator speed governor shown in FIG.
It is a sectional view showing a section taken along line IV-IV of FIG. 4 FIG.
[5] For the second embodiment of the elevator speed governor according to the present invention, it is a front view showing an enlarged part.
DESCRIPTION OF THE INVENTION
[0013]
　Hereinafter, an embodiment of an elevator apparatus according to the present invention based on the figures explained.
Example 1
[0014]
　Hereinafter, an embodiment of an elevator apparatus according to the present invention based on the figures explained.
[0015]
　First, it will be described with reference the schematic configuration of an elevator apparatus to which the present invention is applied in FIG. Figure 1 is a schematic configuration diagram of an elevator apparatus according to the present invention.
[0016]
　In general, the elevator device, lift the building hoistway 102 provided 100 (car) 103 and balance the weight 104 connected by a main rope 105, vertically movable car 103 along the guide rails 107 It is configured in such a way that. The elevator shaft 102 top the formed machine room 101, the main rope 105 hoist 106 wound a control panel 114 for controlling the hoist 106 and the like, the speed governor 110 and arranged .
[0017]
　Governor 110 includes an endless governor rope 111 stretched over the lifting stroke entire hoistway 102, it is installed in the machine room 101, governor rope 111 wound around the sheave (tone and the like speed machine pulley) 201 (see FIG. 2). Governor 110 is configured to detect an overspeed of the car 103, to operate the safety gear 108 which will be described later.
[0018]
　Governor rope 111 is wound around between the tension pulley 114 and sheave 201 disposed there below the hoistway 102 to the opposite position of sheave 201, which moves in conjunction with the cage 103. That is, tension pulley 114 in the vertical direction, is disposed at a position opposite to the sheave 201, governor rope 111 is laid vertically between the sheaves 201 and tension pulley 114. Therefore, it may be regarded as part of the tension pulley 114 governor 110.
[0019]
　Also, the speed governor 110 will be described later, fly weights 202, switch 203, a ratchet mechanism 204, a disc (disc-shaped member) 205, a first link mechanism (first lever mechanism) 206, the second link mechanism (second lever mechanism) 210 includes other structures associated with the catch weights 207 and their. Moreover, the speed governor 110, loading the tension pulley 114, a tension weights (not shown) is provided.
[0020]
　The car 103, a safety device 108 for gripping the guide rail 107 by the wedge in an emergency, the actuating lever 109 is provided with this safety device 108 is driven, pivotally supported in the cage 103 side. The actuating lever 109, the governor rope 111 is connected. Further, even when the car 103 and the counterweight 104 has collided with the hoistway bottom for some reason, is provided with a buffer 112 and 113 to stop to reduce the impact as people in the car is safe. 112 is a shock absorber of the weight-side balance, 113 is a shock absorber of the car side.
[0021]
　Incidentally, the elevator apparatus to which the present invention is applied is not limited to the configuration shown in FIG. For example, without providing the machine room on the top of the hoistway 102, may be installed a fixing portion (for example, guide the top of the rail 107) in the speed governor 110 at the top of the hoistway 102.
[0022]
　Next outline of the speed governor 110 of this embodiment will be described with reference to FIGS. Figure 2 is a schematic view of a first embodiment of the elevator speed governor according to the present invention. Figure 3 is a front view showing an enlarged part of the elevator speed governor shown in FIG.
[0023]
　Governor 110 is supported on an endless governor rope 111 is wound around the sheave 201 is governor frames (not shown), to ride by the fly weights 202 which rotates sheave 201 and concentric is the speed of the car governor. To rotate the fly weights 202 in synchronism with the sheave 201, receives a force in the radially outer side of the sheave 201 by centrifugal force according to the speed of the car, open in the outer circumferential direction.
[0024]
　Fly weights 202 are oscillating capable constructed around a rotation axis 208. Fly weights 202 rotates with the sheave 201, the posture is changed for the sheave 201 in accordance with the rotational speed of the sheave 201. When fly weights 202 is opened in the outer peripheral direction, around a rotation shaft 208, the end portion 202b side is opened to the outside, the claw 202a side enters radially inward. Further, the fly weights 202 are provided two, the two fly weights 202 are connected by a connecting member 214.
[0025]
　The mounting portion of the rotation shaft 208 of the two fly weights 202, mounting base 215 for attaching the biasing member 213 is fixed. The biasing member 213 is urged in the direction of closing one of the fly weights 202. In other words, biasing member 213 imparts resistance to operation fly weights 202 tries to open radially outward of the sheaves 201 receives a centrifugal force generated by the rotation.
[0026]
　Connecting member 214 is one of the fly weights 202 a biasing force applied from the biasing member 213 is transmitted to the other of the fly weights 202. Thus, the two fly weights 202, to the operation to open radially outward of the sheaves 201 receives a centrifugal force generated by the rotation, it is given a resistance force from the urging member 213.
[0027]
　In a state where sheave 201 is stationary, the biasing member 213 is biased in a direction to close the fly weights 202, the claw 202a of the fly weights 202 is located radially outward of the sheaves 201. Thus, the claw 202a of the fly weights 202 are held at a position spaced from the inspired point (inspired operating point) 204a of the ratchet mechanism 204. Inspired point 204a is a portion for engagement with the pawl 202a of the fly weights 202 (claw of the ratchet), the ratchet mechanism 204 rotates with the sheave 201 by pawls 202a of the fly weights 202 is engaged with the inspired point 204a.
[0028]
　When the lift speed of the car 103 reaches the first overspeed exceeds the rated speed (1.3 times the rated speed usually), by operating the switch 203 (in this case, opening the contacts), the car 103 power hoist 106 for driving and the power of the control device for controlling the hoisting machine 106 cuts off, respectively.
[0029]
　Also, the speed governor 110, the descending speed of the car 103 to ride some reason reaches the second overspeed exceeds the first overspeed (1.4 times the rated speed usually), an end portion of the fly weights 202 202b side is further open to the outside, the claw 202a side further into the radially inner side. Thus, to engage the inspired point 204a of the ratchet mechanism 204 which pawl 202a of the fly weights 202 are linked to the disc 205.
[0030]
　The ratchet mechanism 204 is inspired points assembled to the sheave 201 concentrically and (ratchet) 204a, a disk 205 assembled to the inspired point 204a and concentric pin provided on an outer peripheral portion of the circular plate 205 209 constituted by the. Disc 205 is integral with the ratchet mechanism 204 rotates together with the ratchet mechanism 204. Pin 209 is first link mechanism described later engagement portion for connecting the (first lever mechanism) 206 to the ratchet mechanism 204 (engagement pin).
[0031]
　May be integral molded structure from the pin 209 and the disc 205 may be configured with an attached pin 209 configured as a separate member to the disc 205. Configuration according to the disc 205 and the pin 209 connects the inspired point 204a and the first link mechanism 206 may be any configuration capable of transmitting the rotation of inspired point 204a to the first link mechanism 206.
[0032]
　The first link mechanism 206 includes two links 206d that extends in two directions from the rotational shaft 206b, has 206e, has a bent shape with the rotation shaft 206b portion. One end portion of one link 206d (tip) into the groove (engagement portion of the pin 209) 206a is provided, the claw portion at one end of the other link 206e (tip) (engagement with the catch weights 207 ) 206c is provided.
[0033]
　Catch weights 207 is coupled to the second link mechanism 210 by the second link mechanism connecting portion 210a provided on the (second lever mechanism) 210. Catch weights 207 is coupled to the first link mechanism 206 via the second link mechanism 210. The second link mechanism 210, the rotary shaft 210b is provided at one end, is provided rotatably around the rotation shaft 210b. At the other end of the second link mechanism 210, the pin 210c is provided. Pin 210c is engaged portion to be engaged with the claw portion 206c of the first link mechanism 206 (the engaging pin).
[0034]
　The groove 206a and the pin 209, which is engaging portion for releasably connecting the first link mechanism 206 and the ratchet mechanism 204. The claw portion 206c and the pin 210c, a engaging portion for releasably connecting the first link mechanism 206 and the second link mechanism 210.
[0035]
　The pawl 202a engages inspired point 204, the ratchet mechanism 204 is rotated by the rotational force of the rope sheave 201 and the fly weights 202. When the ratchet mechanism 204 is rotated, one end of the link mechanism 206 to the pin 209 groove 206a is engaged is around a rotation shaft 206 b, is rotated in the arrow A direction. At this time, the other end of the link mechanism 206 rotates in the direction of arrow B (the upward direction).
[0036]
　When the other end portion of the first link mechanism 206 rotates in the direction of arrow B, the engagement of the pin 210c of the claw portion 206c and the second link mechanism 210 of the first link mechanism 206 is released. The second link mechanism 210 engaged with the pin 210c is released is subjected to the weight of the catch weights 207, the ends of the pins 210c side is rotated in the arrow C direction about the rotation center 210b. Accordingly, the catch weights 207 is lowered in the direction of arrow D from the self holding position, the connecting portion between the contact plate 212 attached to the frame 211, biting the governor rope 111, governor rope 111 the gripping. Thus, safety device 108 operates provided the car 103, mechanically to emergency stop the car 103.
[0037]
　The holding mechanism of the catch weights 207 will be described with reference to FIG.
[0038]
　Catch weights 207 are normal, is held in a position not bitten more governor rope 111 to the first link mechanism 206 which is connected with the catch weights 207. This catch weights 207 and the first link mechanism 206, in the state where the first link mechanism 206 and the second link mechanism 210 is engaged, it is possible to keep free standing posture being normally set.
[0039]
　In the conventional speed governor structure, direct contact to the fly weights 202 to the first link mechanism 206, was equipped with a mechanism for operating the catch weights 207. However, in this embodiment, in order to improve the operating speed performance of the speed governor 110, and increase the inspired point for operating the catch weights 207 to multipoint (three or more). For example, in the speed governor 110 with ratchet mechanism 204 needs to have a further connecting mechanism and a first link mechanism 206 and the ratchet mechanism 204. At this time, since the catch weights 207 and the first link mechanism 206 is a structure to maintain self-supporting posture, while the state in which the link structure 206 and the ratchet mechanism 204 is not connected is not noticed, is traveling elevator there is a possibility become.
[0040]
　In this case, when the elevator system becomes overspeed state, the fly weights 202 despite the ratchet mechanism 204 engaged with the ratchet mechanism 204 is rotated, the rotation of the ratchet mechanism 204 is in the first link mechanism 206 in a state that is not transmitted. Then, ready to catch weights 207 does not work, the state where it can not grip the governor rope 111 catch weights 207.
[0041]
　In this embodiment, in the state where the first link mechanism 206 is not engaged with the ratchet mechanism 204, and a structure that can not be set catch weights 207 to the first link mechanism 206. That is, the ratchet mechanism 204 when the first link mechanism 206 is not engaged is a structure that can not be engaged with the first link mechanism 206 and the second link mechanism 210.
[0042]
　When the ratchet mechanism 204 first link mechanism 206 is not engaged, the structure for preventing the first link mechanism 206 to engage with the second link mechanism 210 will be described with reference to FIGS. Figure 4 is a sectional view showing a section taken along line IV-IV of FIG.
[0043]
　In this embodiment, as shown in FIG. 3, the mounting ratchet mechanism 204 circularly plate (disc-like member) 205, notch only a portion connecting the first link mechanism 206 of the disc 205 (the outer peripheral side of the pin 209) ( providing the linear portion) 301. Both end portions of the notch 301 is connected by arcuate outer peripheral surface 205b (see FIG. 2), arc-shaped outer peripheral surface 205b constitute the connection blocking shaped portion to prevent the connection between the first link mechanism and the catch weights 207 . The link 206d of the first link mechanism 206 is provided a bracket 302.
[0044]
　As shown in FIG. 4, the bracket 302 is attached to the surface facing the disc 205 of the first link mechanism 206. End of the groove 206a side of the bracket 302 is provided in a position to interfere with the arc portion 205b of the disc 205 (contact). That is, the bracket 302, so as to interfere with the arc portion 205b of the disc 205, it constitutes a convex portion protruding from the link 206d of the first link mechanism 206.
[0045]
　FIG. 4 shows the arc portion of the disc 205 by a broken line 205a. On the other hand, the notch 301 of the disc 205, the bracket 302 is provided in a position that does not interfere with the disc 205 (contact).
[0046]
　In the range of the notch 301 of the disc 205, the bracket 302 does not interfere with the disc 205 can engage the groove 206a of the first link mechanism 206 to the pin 209. The arc portion 205a of the disc 205, the bracket 302 interferes with the disc 205, the first link mechanism 206 is unable to take a posture shown in FIG. In other words, the arc portion 205a of the disc 205, the first link mechanism 206 is in a state of being rotated about the rotation axis 206b relative position shown in FIG. 3, the claw portion 206c and the second and the pin 210c of the link mechanism 210 is unable to take engagable attitude.
[0047]
　That is, in this embodiment, the disc 205 is in the position other than the first link mechanism 206 is engaged with the pin (engaged portion) 209, connected capable orientation between catch weights 207 a first link mechanism 206 coupling blocking shaped portion to prevent consisting of to have a (arc portion) 205a. That is, coupling prevents shaped portion 205a holds the connection is not possible orientation between catch weights 207 a first link mechanism 206.
[0048]
　Thus, it is impossible to set the catch weights 207 via the second link mechanism 210 to the first link mechanism 206. Accordingly, the first link mechanism 206 and the catch weights 207 can not retain the free-standing state. In this sense, the coupling blocking shaped portion 205a is a self blocking shaped portion to prevent the independence of the first link mechanism 206 and the catch weights 207.
[0049]
　In this embodiment, in addition state where the first link mechanism 206 engaged with the ratchet mechanism 204 comprises a bracket 302 to prevent contact with the disc 205 to become self-sustainable state to the first link mechanism 206. Furthermore, in order to prevent any contact between the bracket 302 and the disc 205, the first link mechanism 206 a notch 301 to be engaged with the ratchet mechanism 204, provided to the disc 205.
[0050]
　Thus, when setting the free-standing state to catch weights 207 and the first link mechanism 206, the portion other than the pin 209 Toritsui the disc 205 (the circular arc portion 205a), the outer periphery 205a of the disc 205 to the bracket 302 It can not be set from coming into contact. And, it is not possible to set the catch weights 207 only in the state in which the first link mechanism 206 engaged with the always pin 209. Therefore, it is possible to prevent operating the left elevator apparatus in a state that does not set the catch weights 207 always becomes possible to operate the catch weights 207 when a failure of the elevator system.
[0051]
　In the configuration described above, the first link mechanism 206 and the bracket 302 are configured as separate members, but the brackets are attached to 302 in the link 206d of the first link mechanism 206, integrally formed with the first link mechanism 206 and the bracket 302 it may be.
Example 2
[0052]
　Next, a second embodiment of the speed governor according to the present embodiment will be described with reference to FIG. 5, a second embodiment of the elevator speed governor according to the present invention, is a front view showing an enlarged part. Note that the same structure as that shown in Example 1 are denoted by the same reference numerals. Also, the description of the same structure as in Example 1 is omitted.
[0053]
　In this embodiment, the structure of the engaging portion for engaging the first link mechanism 206 and the ratchet mechanism 204, are changed as in Example 1. Other configurations are the same as in Example 1.
[0054]
　In this embodiment, instead of the pins 209 and the notches 301 of the disc 205 is provided with a gap (groove-shaped portion or notch) 401 in a disk 205. Gap 401 achieves the same effects as the pin 209 and notch 301 of the first embodiment. Moreover, it is shaped to engage the groove 206a is not provided to the first link mechanism 206, one end 402 of the link 206d of the first link mechanism 206 in the gap 401 of the disc 205. That is, the engagement portion of the first link mechanism 206 side constituted at one end 402 of the link constitute an engagement portion of the disk 205 side gap 401. Configuration other than the above-described circular plate 205 and the first link mechanism 206 is the same as in Example 1.
[0055]
　In this embodiment, in the circumferential direction of the disk 205, both end portions of the gap 401 is connected by an arc section (outer circumference) 205f of the disc 205. The arc portion 205f constitutes a coupling blocking shaped portion (freestanding blocking shaped portion) 205a in the first embodiment. As in Example 1, the coupling blocking shaped portion 205a, it is impossible to set the catch weights 207 to the first link mechanism 206 via the second link mechanism 210. Accordingly, the first link mechanism 206 and the catch weights 207 can not retain the free-standing state.
[0056]
　Thus, the catch weights 207 when setting the self-supporting state the first link mechanism 206, the portion other than the gap 401 provided in a disc 205, a bracket periphery of the disc 205 is provided on the first link mechanism 206 from touching the 302 can not be set catch weights 207 to the first link mechanism 206. Then, it is impossible to set the catch weights 207 only in a state of always engaging the first link mechanism 206 in the gap 401. Therefore, always it becomes possible to operate the catch weights 207 when a failure of the elevator system.
[0057]
　The present invention is not limited to the above-described embodiments, 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 necessarily include all of the 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
[0058]
　100 ... buildings, 101 ... machine room, 102 ... hoistway, 103 ... car, 104 ... counterweight, 105 ... main ropes, 106 ... hoist, 107 ... guide rail, 108 ... safety device, 109 ... pulling lever, 110 ... governor, 111 ... governor rope, 112 ... counterweight side damper, 113 ... car-side shock absorber, 201 ... governor sheave, 202 ... fly weights, 203 ... switch, 204 ... ratchet mechanism, 205 ... disc (disc-shaped member), 206 ... first link mechanism (first lever mechanism), 207 ... catch weights, 210 ... second link mechanism (second lever mechanism), 301 ... notch (linear shape parts), 302 ... bracket, 401 ... gap (groove-shaped portion, the cutout portion).

claims

[Claim 1]Rope governor that moves in conjunction with the elevator car, a sheave in which the governor rope are wound, to rotate together with the sheave, and orientation with respect to the sheave in response to the rotational speed of the sheave fly weights that vary receives the catch weights for gripping the governor rope with another member by dropping from self holding position, the posture change of the fly weights while being connected to the catch weights in the first link mechanism and the elevator speed governor having a said connection between said catch weights is released,
　the ratchet mechanism having a plurality of triggering operation point engaging said fly weights, integral with the ratchet mechanism is a circular plate having the engaging portion where the first link mechanism is engaged,
　the disc, the position where the first link mechanism is engaged with the engaging portion Outside, elevator speed governor, characterized in that it comprises a coupling blocking shaped portion to prevent from becoming the first link mechanism to a posture capable of coupling with the catch weights.
[Claim 2]
　According to claim 1,
　wherein the disc has a pin which constitutes the engaging portion, which has a linear portion formed on the outer peripheral side of the pin, arcuate outer peripheral connecting both ends of the linear portion surface by constitute the connection blocking shaped portion,
　the first link mechanism, the coupling blocking shaped part the elevator speed governor, characterized in that it has a convex portion that contacts the arcuate outer peripheral surfaces constituting the .
[Claim 3]
　According to claim 1,
　wherein said disc has one end portion of the links constituting the first link mechanism has a groove-shaped portion for engagement by arcuate outer peripheral surface of the connecting both ends of the groove-shaped portion elevator speed governor, characterized in that to constitute a coupling blocking shaped portion.
[Claim 4]
　According to claim 1,
　elevator speed governor, characterized in that it comprises a second link mechanism for connecting the catch weights and the first link mechanism.
[Claim 5]
　Comprising a car which moves up and down the hoistway is suspended by the main rope, a safety device provided in the car, said a safety device operation is to speed governor detects the overspeed of the car an elevator apparatus,
　as the governor, the elevator apparatus characterized by comprising a has been speed governor according to any one of claims 1 to 4.