JP2021130526A - Insertion/extraction implement for support pin of brake - Google Patents

Abstract

To provide an insertion/extraction implement of a brake for a hoisting machine of an elevator that hardly damages a support pin when inserting/extracting the support pin.SOLUTION: An insertion/extraction implement 12 includes a support part 13, an arm part 14, and a holding part 15. A release part 10 of a brake releases a load applied to a support pin 6 facing a direction of a first shaft. The first shaft, a second shaft, and a third shaft are perpendicular to one another. A field of the brake is a portion in which the release part 10 is provided with an interval in the second shaft direction from the support pin 6. The support part 13 is mounted on the field with a releasing bolt 11 for activating the release part 10. The arm part 14 is rotatably supported by the support part 13 around a rotation shaft parallel to the third shaft. The arm part 14 has an operation part 18 on an edge part in the longitudinal direction. The holding part 15 is rotatably supported around the rotation shaft parallel to the third shaft at an end part opposite to the longitudinal direction with respect to the operation part 18 of the arm part 14. The holding part 15 holds the support pin 6.SELECTED DRAWING: Figure 7

Description

The present disclosure relates to an insertion / removal device for a brake support pin.

Patent Document 1 discloses an example of a device for pulling out a brake pin of an elevator hoisting machine. The instrument is a cylinder with chamfered ends. The device is used to push the pin out of the brake and project it so that the worker can manually pull the pin out of the brake.

Japanese Unexamined Patent Publication No. 2000-38262

However, in Patent Document 1, the worker hits the instrument with a hammer to push out the pin. Therefore, the impact of hitting with a hammer may damage the pin.

The present disclosure relates to a solution to such a problem. The present disclosure provides an insertion / extraction device that does not easily damage the support pin during insertion / extraction.

The brake support pin insertion / removal device according to the present disclosure has one or more open portions that release the load applied to each of the one or more support pins directed in the direction of the first axis in the brake of the hoisting machine of the elevator. In the field provided at intervals in the direction of the second axis perpendicular to the first axis from each of the support pins, the support part attached by the release bolt that operates the opening part, and the first axis and the second axis by the support part. An arm that is rotatably supported around a rotation axis that is perpendicular to the third axis and has an operating portion at the end in the longitudinal direction, and an end that is opposite to the operating portion of the arm in the longitudinal direction. Provided with a holding portion that is rotatably supported around a rotation axis parallel to the third axis and holds any one or more support pins.

With the insertion / extraction device according to the present disclosure, the brake support pin is less likely to be damaged during insertion / removal.

It is a block diagram of the brake which concerns on Embodiment 1. FIG. FIG. 1 is a cross-sectional view taken along the line AA in FIG. 1 of the brake according to the first embodiment. It is a block diagram of the insertion / removal device which concerns on Embodiment 1. FIG. FIG. 5 is an enlarged view of a main part of the insertion / extraction device according to the first embodiment. It is a figure which shows the example of the insertion / removal of the support pin by the insertion / removal device which concerns on Embodiment 1. FIG. It is a figure which shows the example of the insertion / removal of the support pin by the insertion / removal device which concerns on Embodiment 1. FIG. It is a figure which shows the example of the insertion / removal of the support pin by the insertion / removal device which concerns on Embodiment 1. FIG. It is a figure which shows the example of the insertion / removal of the support pin by the insertion / removal device which concerns on Embodiment 1. FIG. FIG. 5 is an enlarged view of a main part of the insertion / extraction device according to the second embodiment.

A mode for carrying out the present disclosure will be described with reference to the accompanying drawings. In each figure, the same or corresponding parts are designated by the same reference numerals, and duplicate description will be appropriately simplified or omitted.

Embodiment 1.
FIG. 1 is a configuration diagram of a brake according to the first embodiment.

The brake 1 is a device that brakes the hoisting machine of the elevator. Elevators apply to buildings with multiple floors. In a building, hoistways are provided across multiple floors. An elevator has a car that travels on a hoistway between multiple floors of a building to transport users. The hoisting machine is a device for running the car on the hoistway. In the hoist, for example, a motor generates a driving force to drive the car. The motor of the hoist is, for example, a permanent magnet synchronous motor. A disc 2 is attached to the motor of the hoist. The disc 2 is a disk-shaped member that rotates in conjunction with the rotor of the hoisting machine motor. The brake 1 is provided on the outer peripheral portion of the disc 2.

The brake 1 includes a field 3, a pad 4, a switch 5, and a plurality of support pins 6. The field 3 is a portion fixedly attached to the hoisting machine. The pad 4 is provided so as to face the outer peripheral portion of the disc 2. The pad 4 is a portion that generates a braking force by frictional force by pressing against the disc 2. The pad 4 is pressed against the disc 2 by, for example, the elastic force of a pressing spring provided in the field 3. The pad 4 is separated from the disc 2 by, for example, the magnetic force of an electromagnet provided in the field 3. The switch 5 is a part that switches the operation of the brake 1. The switch 5 switches between contact and non-contact between the pad 4 and the disk 2 by switching the operation of the electromagnet in the field 3, for example. The plurality of support pins 6 are portions that support the brake 1 on, for example, a support base of the brake 1. The plurality of support pins 6 are portions that receive torque due to frictional force between, for example, the pad 4 and the disc 2. Each support pin 6 is inserted into a hole in the support piece 7.

FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1 of the brake according to the first embodiment.

In this example, each support pin 6 is a columnar member. The central axis of each support pin 6 is oriented in the direction of the first axis. The first axis is, for example, an axis parallel to the rotation axis of the disc 2. A cylindrical groove 8 is provided in each support pin 6. The cylindrical groove 8 is a groove along a side surface provided at an end portion in the direction of the first axis. The cylindrical groove 8 is a groove into which a holding plate or the like is inserted so that the support pin 6 can be prevented from coming off during normal operation of the elevator, for example. By inserting the holding plate, the movement of the support pin 6 in the direction of the first axis is restricted. A screw hole 9 is provided in each support pin 6. The screw holes 9 are provided on the end faces in the direction of the first axis. The central axis of the screw hole 9 is provided coaxially with the central axis of the support pin 6.

In the field 3, an open portion 10 is provided. The opening portion 10 is a portion that releases the load applied to each of the support pins 6. The opening portion 10 is, for example, a switch 5 that is operated by tightening the opening bolt 11. The release bolt 11 is tightened, for example, in the direction of the first axis. The opening portion 10 may release the load applied to each of the support pins 6 by, for example, adjusting the elastic force of the pressing spring in the field 3. The opening portions 10 are provided at intervals from the respective support pins 6 in the direction of the second axis. The second axis is an axis perpendicular to the first axis. The opening portion 10 is provided equidistant from each of the support pins 6 on the projection surface perpendicular to the first axis.

Each support pin 6 is removed from the hole of the support piece 7 in maintenance and inspection of the brake 1, for example. The extracted support pin 6 undergoes maintenance work such as cleaning and application of grease. The support pin 6 that has undergone maintenance work is inserted into the hole of the support piece 7 again. An insertion / removal device is used in the insertion / removal work of the support pin 6 for maintenance and inspection of the brake 1.

FIG. 3 is a block diagram of the insertion / extraction device according to the first embodiment.
In FIG. 3, a coordinate axis including a first axis, a second axis, and a third axis of the brake 1 in which the insertion / extraction device is used is shown. The third axis is an axis perpendicular to the first and second axes.

The insertion / extraction device 12 includes a support portion 13, an arm portion 14, and a holding portion 15.

The support portion 13 is attached to the field 3 of the brake 1 by an open bolt 11. The support portion 13 is, for example, an L-shaped plate-shaped member having two surfaces perpendicular to each other. A through hole 16 is provided on the surface of the support portion 13 perpendicular to the first axis. The through hole 16 is a hole through which the open bolt 11 is passed. The support portion 13 is attached to the field 3 so as to be rotatable around the central axis of the open bolt 11 passed through the through hole 16. The support portion 13 has a support shaft 17. The support shaft 17 is a rod-shaped member provided on the surface of the support portion 13 perpendicular to the third axis. The central axis of the support shaft 17 is directed to the third axis.

The arm portion 14 is a rod-shaped member that is long in the longitudinal direction. The arm portion 14 has an operation portion 18 at an end portion. The operation unit 18 is, for example, a grip held by a worker who performs the work of inserting and removing the support pin 6. The arm portion 14 has a first elongated hole 19 in the central portion. The first elongated hole 19 is an elongated hole through which the support shaft 17 of the support portion 13 passes. The arm portion 14 is slidably supported in the longitudinal direction with respect to the support portion 13 by a support shaft 17 passed through the first elongated hole 19. The arm portion 14 is rotatably supported around the central axis of the support shaft 17. The arm portion 14 has an action portion 20 at an end opposite to the operation portion 18. A second elongated hole 21 is provided in the working portion 20. The second elongated hole 21 is an elongated hole long in the longitudinal direction of the arm portion 14.

The holding portion 15 is a portion that holds the support pin 6 to be inserted / removed. The holding portion 15 includes a base portion 22, a connecting bolt 23, a first coil spring 24, a second coil spring 25, and a plurality of claw portions 26.

The base portion 22 has a tubular portion 27, a shaft portion 28, and a plurality of shoulder portions 29. The tubular portion 27 is a cylindrical portion whose central axis is directed in the direction of the first axis. The shaft portion 28 is a rod-shaped portion provided on the side surface of the tubular portion 27. The central axis of the shaft portion 28 is oriented in the direction of the third axis. The holding portion 15 is rotatably supported around a rotating shaft parallel to the third axis by passing the shaft portion 28 through the second elongated hole 21 of the acting portion 20. The holding portion 15 is slidably supported in the longitudinal direction of the arm portion 14.

The plurality of shoulder portions 29 are members that extend rotationally symmetrically with respect to the central axis of the base portion 22. The central axis of the base portion 22 is, for example, the central axis of the tubular portion 27. In this example, two shoulders 29 are provided.

The connecting bolt 23 is a bolt that is connected to the support pin 6 so as to prevent the support pin 6 to be inserted and removed from falling. The central axis of the connecting bolt 23 is oriented in the first axial direction. The connecting bolt 23 is passed through the tubular portion 27. In this example, the tubular portion 27 does not have a female thread with the connecting bolt 23 as the male thread. The connecting bolt 23 is passed through the tubular portion 27 so as to be displaceable along the central axis.

The first coil spring 24 and the second coil spring 25 are passed through the connecting bolt 23. The first coil spring 24 is arranged in a compressed state between, for example, the head of the connecting bolt 23 and the tubular portion 27. The second coil spring 25 is arranged in a compressed state between, for example, the nut 30 passed through the connecting bolt 23 and the tubular portion 27. The first coil spring 24 and the second coil spring 25 attach a connecting bolt 23 to the base 22 so as to be displaceable in the direction of the first axis.

Each of the plurality of claws 26 corresponds to any of the shoulders 29. Each claw portion 26 is attached to the tip of the corresponding shoulder portion 29. The claw portion 26 is subjected to a force for closing the end 31 in the direction of the first axis toward the central axis of the holding portion 15 by, for example, the elastic force of a torsion spring provided at the tip of the corresponding shoulder portion 29. The end 31 of the claw portion 26 in the direction of the first axis is an end face or a tip in the direction of the first axis. In this example, the claw portion 26 is an L-shaped rod-shaped member. The end 31 of the claw portion 26 in the direction of the first axis is an end face perpendicular to the portion connected to the shoulder portion 29.

FIG. 4 is an enlarged view of a main part of the insertion / extraction device according to the first embodiment.
In FIG. 4, the arm portion 14 and the holding portion 15 viewed from a direction perpendicular to the first axis are shown.

In this example, the working portion 20 is formed as an oval annular portion. At this time, the second elongated holes 21 are provided on both sides of the edge of the annular portion. As a result, the acting portion 20 and the shoulder portion 29 are less likely to interfere with each other. In addition, the holding portion 15 can slide more stably in the longitudinal direction of the arm portion 14. For example, when the holding portion has three or more shoulder portions, interference between the acting portion and the shoulder portion may be prevented by providing the shaft portion and the shoulder portion at intervals in the direction of the first axis. ..

Subsequently, an example of inserting and removing the support pin 6 will be described with reference to FIGS. 5 to 8.
5 to 8 are views showing an example of inserting and removing the support pin by the insertion / removal device according to the first embodiment.

First, the worker attaches the insertion / extraction device 12 to the brake 1 as shown in FIG. The worker passes the open bolt 11 through the through hole 16 of the support portion 13. The worker tightens the open bolt 11 into the field 3 until the open portion 10 is activated.

Next, the worker causes the holding portion 15 to hold the support pin 6. The worker brings the holding portion 15 closer to the support pin 6 to be pulled out by rotating the insertion / extraction device 12 around the open bolt 11. The worker slides the arm portion 14 in the longitudinal direction to align the holding portion 15 with the position of the support pin 6. The worker tightens the connecting bolt 23 into the screw hole 9 of the support pin 6. The worker opens the end 31 of each claw portion 26 to the outside. The worker hangs each claw portion 26 in the cylindrical groove 8 of the support pin 6. Here, since the connecting bolt 23 and the base 22 are displaceably attached in the direction of the first axis by the first coil spring 24 and the second coil spring 25, the procedure for tightening the connecting bolt 23 and the claw portion 26 are formed in the cylindrical groove 8. It doesn't matter which of the steps is taken first. When the holding portion 15 holds the support pin 6, the distance from the acting portion 20 to the support shaft 17 is longer than the distance from the holding portion 15 to the support shaft 17.

Next, the worker grasps the operation portion 18 and pushes the arm portion 14 in the direction of the first axis. At this time, the arm portion 14 acts as a lever with the operation portion 18 as the force point, the support shaft 17 as the fulcrum, and the action portion 20 as the action point. The arm portion 14 pulls the holding portion 15 in the direction of the first axis.

As shown in FIG. 6, the holding portion 15 pulls the support pin 6 in the direction of the first axis by pulling at the end 31 of each claw portion 26 hooked on the cylindrical groove 8.

As shown in FIG. 7, since the holding portion 15 is pulled by the arm portion 14 acting as a lever, the worker can pull out the support pin 6 without applying an impact with a hammer or the like.

Here, since the arm portion 14 is operated so as to rotate around the support shaft 17 as a rotation axis, the action portion 20 draws an arc-shaped trajectory when the support pin 6 is pulled out. When the worker is applying force to the operating portion 18, the shaft portion 28 is strongly pressed against the edge of the second elongated hole 21. Therefore, the holding portion 15 pulls the support pin 6 in the direction of the first axis without sliding in the longitudinal direction of the arm portion 14 due to friction. At this time, if the holding portion 15 does not slide in the longitudinal direction, the acting portion 20 moves in an arc-shaped trajectory, so that the central axis of the holding portion 15 may be slightly tilted from the first axis. Therefore, the worker may intermittently apply a force to the operating portion 18 so that the holding portion 15 can eliminate the inclination from the first axis in the direction in which the support pin 6 is pulled. When the force applied to the operation portion 18 by the worker is released, the force for pressing the shaft portion 28 against the edge of the second elongated hole 21 is removed. At this time, the holding portion 15 can slide in the longitudinal direction of the arm portion 14. Therefore, when the central axis of the holding portion 15 is tilted from the first axis, the central axis of the holding portion 15 is tilted due to, for example, the elastic force of the torsion spring of the shoulder portion 29 or the elastic force due to the elastic deformation of the connecting bolt 23. Is resolved. When the radius of the arc-shaped orbit drawn by the working portion 20 is sufficiently large so that the inclination of the central axis of the holding portion 15 can be ignored in comparison with the stroke in the direction of the first axis for pulling out the support pin 6. The worker may continuously apply force to the operation unit 18.

The support pin 6 pulled out from the support piece 7 is connected to the holding portion 15 by a connecting bolt 23. Therefore, the pull-out support pin 6 is prevented from falling. The worker performs maintenance work such as cleaning and grease application on the support pin 6 connected to the holding portion 15. At this time, the worker may remove the connecting bolt 23 and replace the support pin 6.

After that, the worker inserts the support pin 6 into the hole of the support piece 7. The worker brings the support pin 6 closer to the hole of the support piece 7 by rotating the insertion / extraction device 12 around the open bolt 11 while the support pin 6 is held by the holding portion 15. The worker slides the arm portion 14 in the longitudinal direction to align the support pin 6 with the position of the hole of the support piece 7.

Next, the worker grasps the operation portion 18 and pulls the arm portion 14 in the direction of the first axis. At this time, the arm portion 14 acts as a lever with the operation portion 18 as the force point, the support shaft 17 as the fulcrum, and the action portion 20 as the action point. The arm portion 14 pushes the holding portion 15 in the direction of the first axis.

As shown in FIG. 8, the holding portion 15 pushes the support pin 6 in the direction of the first axis by pushing at the end 31 of each claw portion 26 hooked on the cylindrical groove 8. Here, the end 31 in the direction of the first axis of the claw portion 26 inside the cylindrical groove 8 and the end 31 in the direction of the first axis of the claw portion 26 outside the cylindrical groove 8 are perpendicular to the first axis. It is on the plane P. In this example, the end 31 in the direction of the first axis of the claw portion 26 inside the cylindrical groove 8 and the end 31 in the direction of the first axis of the claw portion 26 outside the cylindrical groove 8 are parallel to the plane P. It has an end face. The worker pushes the support pin 6 until the outer end 31 of the cylindrical groove 8 hits the support piece 7. Since the end 31 of the claw portion 26 has an end face parallel to the plane P, the cylindrical groove 8 is pushed to the position of the end face of the support piece 7.

In this way, the worker inserts and removes one support pin 6. When performing the insertion / removal work on the other support pin 6, the worker may continue the insertion / removal work on the other support pin 6 by rotating the insertion / extraction device 12 around the open bolt 11.

As described above, the insertion / extraction device 12 according to the first embodiment includes a support portion 13, an arm portion 14, and a holding portion 15. In the brake 1 of the elevator hoisting machine, the opening portion 10 is a portion that releases the load applied to each of the one or more support pins 6. The support pin 6 is oriented in the direction of the first axis. The field 3 is a portion of the brake 1 in which the opening portion 10 is provided at intervals in the direction of the second axis from each of the one or more support pins 6. The second axis is an axis perpendicular to the first axis. The support portion 13 is attached to the field 3 by an open bolt 11 that operates the open portion 10. The arm portion 14 is rotatably supported by the support portion 13 around a rotation axis parallel to the third axis. The third axis is an axis perpendicular to the first and second axes. The arm portion 14 has an operating portion 18 at an end portion in the longitudinal direction. The holding portion 15 is rotatably supported around a rotation axis parallel to the third axis at an end portion of the arm portion 14 opposite to the operating portion 18 in the longitudinal direction. The holding portion 15 holds any one or more of the support pins 6.

The insertion / extraction device 12 allows the worker to insert / remove the support pin 6 without hitting it with a hammer or the like. Therefore, the support pin 6 and the peripheral portion of the support pin 6 are less likely to be damaged by the insertion / removal work. Further, since the worker performs the operation for the insertion / removal work by the operation unit 18, the insertion / removal work becomes easy even with the support pin 6 which is difficult to handle. Further, since the holding portion 15 holds the support pin 6, the inserted / removed support pin 6 is unlikely to fall. Further, the insertion / removal device 12 is attached to the brake 1 by an open bolt 11. Therefore, the worker can release the load of the support pin 6 and attach the insertion / extraction device 12 in one procedure. As a result, maintenance and inspection work such as insertion and removal of the support pin 6 is streamlined.

Further, the arm portion 14 is rotatably supported by the support portion 13 around a rotation axis parallel to the first axis at equal distances from each of the one or more support pins 6. As a result, the work of inserting and removing the plurality of support pins 6 can be continuously performed. Therefore, the maintenance and inspection work becomes more efficient.

Further, the arm portion 14 is slidably supported in the longitudinal direction with respect to the support portion 13, and the arm portion 14 slidably supports the holding portion 15 in the longitudinal direction. This makes it easier to adjust the positions of the holding portion 15 and the support pin 6. Further, the inclination of the holding portion 15 from the first axis due to the acting portion 20 of the arm portion 14 drawing an arc-shaped trajectory can be easily eliminated. Since the holding portion 15 is less likely to be tilted from the first axis, the support pin 6 and the peripheral portion of the support pin 6 are less likely to be damaged by insertion / removal. Further, since the holding portion 15 is less likely to be tilted from the first axis, the extra force applied to the insertion / removal of the support pin 6 is reduced. In addition, elastic deformation of the arm portion 14 that may occur when the acting portion 20 of the arm portion 14 draws an arc-shaped trajectory can be easily eliminated. The arm portion 14 may be slidable only with respect to either the support portion 13 or the holding portion 15. For example, when the arm portion 14 is slidably supported with respect to the support portion 13, the arm portion 14 does not have to slidably support the holding portion 15 in the longitudinal direction. Alternatively, when the arm portion 14 slidably supports the holding portion 15, the arm portion 14 does not have to be slidably supported with respect to the support portion 13.

Further, the holding portion 15 has a plurality of claw portions 26. Each claw portion 26 holds any one or more of the support pins 6 by hanging on the cylindrical groove 8. The cylindrical groove 8 is provided along the side surface at the end of the support pin 6 in the direction of the first axis. As a result, the holding portion 15 can hold the support pin 6 more reliably.

Further, in each of the claws 26 when hanging on the cylindrical groove 8, the end 31 in the direction of the first axis inside the cylindrical groove 8 and the end 31 in the direction of the first axis outside the cylindrical groove 8 are the first. It is in the same plane P perpendicular to one axis. As a result, the holding portion 15 can be pushed in while holding the support pin 6 until just before the cylindrical groove 8 enters the hole of the support piece 7. Further, since the end 31 on the outside of the cylindrical groove 8 interferes with the support piece 7, it is possible to prevent the cylindrical groove 8 from entering the hole of the support piece 7. Therefore, the worker can push the support pin 6 to an appropriate position by the insertion / extraction device 12.

Further, since the holding portion 15 includes the connecting bolt 23, the support pin 6 that has been pulled out is less likely to fall.

The brake to which the insertion / removal device 12 is applied does not have to be a disc brake. The insertion / extraction device 12 can also be applied to a drum brake or the like as long as the positional relationship between the field having the opening portion and the support pin is the same as that of the brake illustrated above. Further, the support pin 6 does not have to be a pin that receives torque. The support pin 6 may be a fulcrum pin that serves as a rotation axis of, for example, a brake shoe.

Embodiment 2.
The differences between the second embodiment and the examples disclosed in the first embodiment will be described in particular detail. As for the features not described in the second embodiment, any of the features disclosed in the first embodiment may be adopted.

FIG. 9 is an enlarged view of a main part of the insertion / extraction device according to the second embodiment.
In FIG. 9, the end portion and the central portion of the arm portion 14 on the operation portion 18 side are shown.

The arm portion 14 has a lever 32 on the operation portion 18. The lever 32 is a part that is operated by being gripped by an operator. In the operation unit 18, the wire 33 is connected to the lever 32. The wire 33 is a member that is pulled by the operation of gripping the lever 32 of the worker.

The support portion 13 includes a support tube 34 and a clamp 35. The support tube 34 is a tubular member through which the arm portion 14 passes. The support tube 34 is rotatably supported by the support shaft 17. The support portion 13 rotatably supports the arm portion 14 by a support tube 34 that can rotate around a rotation axis parallel to the third axis. Further, the support portion 13 slidably supports the arm portion 14 passed through the support tube 34 in the longitudinal direction. The clamp 35 is provided, for example, on the support tube 34. The clamp 35 faces the portion of the arm 14 protruding from the support tube 34. At the support portion 13, the wire 33 is connected to the clamp 35. The clamp 35 has a mechanism that, when the wire 33 is pulled by the operation of the lever 32, sandwiches the facing portion of the arm portion 14 and suppresses the slide in the longitudinal direction. The clamp 35 is an example of a restraining portion.

The worker grips the lever 32 when pushing the operation unit 18 to pull out the support pin 6 and when pulling the operation unit 18 to push the support pin 6. At this time, the clamp 35 suppresses the slide in the longitudinal direction by sandwiching the arm portion 14. As a result, when the support pin 6 is inserted and removed, the fulcrum of the arm portion 14 that acts as a lever becomes difficult to move, so that the worker can perform the insertion and removal work more stably.

The restraining portion does not have to be the clamp 35. The restraining portion may be a mechanism having a balloon-shaped portion that swells inside the support tube 34 by operating the lever 32 and presses the arm portion 14. Alternatively, the restraining portion may be a flexible cylinder that presses the arm portion 14 by being squeezed inside the support tube 34 by operating the lever 32. The restraining portion may be the support tube itself. The restraining portion may be, for example, a locking mechanism that hangs on an elongated hole through which a support shaft is passed at the central portion of the arm portion 14.

1 Brake, 2 Disc, 3 Field, 4 Pad, 5 Switch, 6 Support Pin, 7 Support Piece, 8 Cylindrical Groove, 9 Screw Hole, 10 Opening Part, 11 Opening Bolt, 12 Insertion Tool, 13 Supporting Part, 14 Arm , 15 Holding part, 16 Through hole, 17 Support shaft, 18 Operating part, 19 1st slot, 20 Acting section, 21 2nd slot, 22 Base, 23 Connecting bolt, 24 1st coil spring, 25 2nd coil spring, 26 Claw, 27 Cylinder, 28 Shaft, 29 Shoulder, 30 Nut, 31 End, 32 Lever, 33 Wire, 34 Support Tube, 35 Clamp

Claims (7)

In the brake of the elevator hoist, the opening that releases the load applied to each of the one or more support pins directed in the direction of the first axis is perpendicular to the first axis from each of the one or more support pins. A support portion attached by an open bolt for operating the opening portion and a support portion attached to a field provided at intervals in the direction of the second axis.
An arm portion rotatably supported by the support portion around a rotation axis parallel to the first axis and a third axis perpendicular to the second axis and having an operation portion at an end portion in the longitudinal direction.
It is rotatably supported around a rotation axis parallel to the third axis at an end of the arm opposite to the operation portion in the longitudinal direction and holds any of the one or more support pins. Holding part and
Brake support pin insertion / removal device. The brake according to claim 1, wherein the arm is rotatably supported by the support around a rotation axis that is equidistant from each of the one or more support pins and parallel to the first axis. Support pin insertion / removal device. The device for inserting and removing a support pin of a brake according to claim 1 or 2, wherein the arm portion is slidably supported in the longitudinal direction with respect to the support portion. The arm portion has a lever operated by being gripped in the operation portion.
The device for inserting and removing a support pin for a brake according to claim 3, wherein the support portion has a restraining portion that suppresses the sliding of the arm portion in the longitudinal direction by operating the lever. The brake support pin insertion / removal device according to any one of claims 1 to 4, wherein the arm portion slidably supports the holding portion in the longitudinal direction. Each of the holding portions holds one of the one or more supporting pins by hooking each of the one or more supporting pins into a cylindrical groove provided along the side surface at the end portion in the direction of the first axis. The device for inserting and removing a support pin for a brake according to any one of claims 1 to 5, which has a plurality of claws. In each of the plurality of claws, the end in the direction of the first axis inside the cylindrical groove and the end in the direction of the first axis outside the cylindrical groove when hanging on the cylindrical groove are said to be the first. The device for inserting and removing a support pin for a brake according to claim 6, which is in the same plane perpendicular to one axis.

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