CN112867687A

CN112867687A - Emergency stop device and elevator

Info

Publication number: CN112867687A
Application number: CN201980067847.2A
Authority: CN
Inventors: 早川智久; 久保洋辅
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 2018-11-28
Filing date: 2019-09-20
Publication date: 2021-05-28
Anticipated expiration: 2039-09-20
Also published as: CN112867687B; JP7204448B2; JP2020083579A; WO2020110437A1

Abstract

The emergency stop device includes a brake mechanism, a drive mechanism, and an operating mechanism. The drive mechanism includes a pull-up rod, a link member, a drive shaft, and a drive spring. The link member is rotatably supported by the working shaft. The drive spring is provided on the drive shaft and applies force to the drive shaft. The operating mechanism includes a connecting member, a movable iron core, an electromagnetic core, and a holding/returning mechanism. The connecting member is connected to the other end of the link member. The holding reset mechanism moves the electromagnet core in a direction of approaching and separating with respect to the movable iron core.

Description

Emergency stop device and elevator

Technical Field

The present invention relates to an emergency stop device for stopping an elevator car in an emergency and an elevator provided with the emergency stop device.

Background

Generally, a rope type elevator includes long objects such as a main rope and a compensating rope that connect an elevator car and a counterweight, and a governor rope for detecting the speed of the elevator car or the counterweight. In addition, provision is made for the elevator to be provided with an emergency stop device as a safety device, which automatically stops the operation of the elevator car when the speed of the elevator car moving up and down along the guide rails exceeds a predetermined value.

In recent years, there has been proposed an emergency stop device in which a brake mechanism of the emergency stop device is electrically operated without using a speed governor. As a conventional emergency stop device of this type, for example, there is a technique described in patent document 1. Patent document 1 describes a technique including a wedge-shaped friction member separated from and approaching a rail by a drive spring and an electromagnet device, and a return motor that returns the electromagnet device while accumulating a force to the drive spring.

Patent document 1 describes the following: the reset motor drives a reset member that presses the electromagnet device to reset the electromagnet device to the holding position, and the reset member allows the electromagnet device in the holding position to move to the release position. Patent document 1 describes the following: the drive spring is energized by a return motor, which is rotated by the return spring, together with the return spring, and the return member is biased to the standby position.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2009-227353

Disclosure of Invention

Problems to be solved by the invention

However, in the technique described in patent document 1, the drive spring is disposed from one end portion to the other end portion in the upper portion of the elevator car, and therefore, there is a problem that the entire apparatus becomes large in size.

In view of the above problems, an object of the present invention is to provide an emergency stop device and an elevator that can achieve a reduction in size of the entire device.

Means for solving the problems

In order to solve the above problems and achieve the object, an emergency stop device includes: a brake mechanism having a brake member provided to the elevating body and holding a guide rail on which the elevating body slides, and stopping movement of the elevating body; a drive mechanism; and a working mechanism. The driving mechanism is connected with a braking part of the braking mechanism and pulls up the braking part. The working mechanism is connected with the driving mechanism and enables the driving mechanism to work.

The drive mechanism is provided with: the pull-up rod is connected with the braking piece; a link member; a drive shaft; and a drive spring. The link member is connected to the pull-up rod and is rotatably supported by a working shaft provided in the elevating body. The drive shaft is connected to one end of the link member. The drive spring is provided on the drive shaft, and urges the drive shaft in a direction in which the drive shaft is pulled up by the pull-up rod via the link member.

The operating mechanism includes a connecting member, a movable iron core, an electromagnetic core, and a holding/returning mechanism. The connecting member is connected to the other end portion of the link member on the opposite side of the one end portion to which the drive shaft is connected, with the working shaft interposed therebetween. The movable core is fixed to the connecting member. The electromagnetic core causes the movable iron core to be attracted and separated. The holding reset mechanism moves the electromagnet core in a direction of approaching and separating with respect to the movable iron core.

In addition, the elevator is provided with a lifting body which can move up and down in the lifting channel, wherein,

the elevator is provided with: a guide rail which is vertically arranged in the lifting channel and supports the lifting body to be capable of sliding; and an emergency stop device which stops the movement of the lifting body based on the state of the lifting movement of the lifting body. The emergency stop device described above is used as the emergency stop device.

Effects of the invention

According to the emergency stop device and the elevator having the above-described configuration, the entire device can be downsized.

Drawings

Fig. 1 is a schematic configuration diagram showing an elevator according to a first embodiment.

Fig. 2 is a front view showing an emergency stop device of the first embodiment.

Fig. 3 is a perspective view showing a brake mechanism of the emergency stop device according to the first embodiment.

Fig. 4 is a front view showing an operating mechanism of the emergency stop device of the first embodiment.

Fig. 5 is a plan view showing an operating mechanism of the emergency stop device according to the first embodiment.

Fig. 6 is an explanatory diagram illustrating a state in which the operating mechanism of the safety device according to the first embodiment is operated.

Fig. 7 is an explanatory diagram illustrating a reset operation of the operating mechanism of the safety device according to the first embodiment.

Fig. 8 is an explanatory diagram showing an operation mechanism of the emergency stop device according to the second embodiment.

Fig. 9 is an explanatory diagram showing an operation mechanism of the emergency stop device according to the third embodiment.

Fig. 10 is an explanatory diagram showing an operation mechanism of the emergency stop device according to the fourth embodiment.

Fig. 11 is an explanatory diagram showing an operation mechanism of the emergency stop device according to the fifth embodiment.

Fig. 12 is an explanatory diagram showing an operation mechanism of the emergency stop device according to the sixth embodiment.

Detailed Description

The emergency stop device and the elevator according to the embodiment will be described below with reference to fig. 1 to 12. In the drawings, the same reference numerals are given to the common members.

1. First embodiment example

1-1 structural example of elevator

First, the structure of an elevator according to a first embodiment (hereinafter, referred to as "this example") will be described with reference to fig. 1.

Fig. 1 is a schematic configuration diagram showing a configuration example of an elevator of this example.

As shown in fig. 1, the elevator 1 of the present example performs an elevating operation in an elevating path 110 formed in a building structure. The elevator 1 includes an elevator car 120 showing one example of a lifting body on which people and freight are placed, a main rope 130, and a counterweight 140 showing another example of the lifting body. The elevator 1 further includes a hoisting machine 100 and an emergency stop device 5.

The elevator 1 further includes a control device 170 and a diverting pulley 150. The hoistway 110 is formed in the building structure, and a machine room 160 is provided on the top of the hoistway 110.

The hoist 100 and the diverting pulley 150 are disposed in the machine room 160. A main rope 130 is wound around a sheave of the hoist 100. In addition, a diverting pulley 150 on which the main rope 130 is suspended is provided near the hoist 100.

One end of the main rope 130 is connected to the upper part of the elevator car 120, and the other end of the main rope 130 is connected to the upper part of the counterweight 140. The elevator car 120 and the counterweight 140 are lifted and lowered on the lifting passage 110 by driving the hoist 100. Hereinafter, the direction in which the elevator car 120 and the counterweight 140 move up and down is referred to as the up-down direction Z.

The elevator car 120 is slidably supported by the two

guide rails

201A and 201B via a slider not shown. Similarly, the counterweight 140 is slidably supported by the counterweight side guide rail 201C via a slider not shown. The two

guide rails

201A, 201B and the counterweight side guide rail 201C extend in the lifting direction Z within the lifting channel 110.

In addition, an emergency stop device 5 for emergency stop of the up-and-down movement of the elevator car 120 is provided in the elevator car 120. The detailed structure of the safety device 5 will be described later.

The machine room 160 is provided with a control device 170. The control device 170 is connected to the elevator car 120 via a connection wire not shown. The control device 170 outputs a control signal to the elevator car 120. The control device 170 is provided in the hoistway 110, and is connected to a state detection sensor, not shown, that detects the state of the elevator car 120.

The information detected by the state detection sensor includes position information of the elevator car 120 that moves up and down in the hoistway 110, speed information of the elevator car 120, acceleration information of the elevator car 120, and the like. As the position information of the elevator car 120, for example, in a multi-car elevator in which a plurality of elevator cars 120 move up and down in the same hoistway 110, abnormal approach information is detected when the distance between two adjacent elevator cars 120 on the upper and lower sides approaches a predetermined distance.

The speed information of the elevator car 120 is, for example, abnormal descending speed information detected when the descending speed of the elevator car 120 is 1.3 times or more the rated speed. The acceleration information of the elevator car 120 is, for example, abnormal acceleration information detected when the acceleration of the elevator car 120 deviates from a preset pattern. The state detection sensor outputs the detected information to the control device.

The control device 170 determines whether the state of the elevator car 120 is abnormal or normal based on the information detected by the state detection sensor. When determining that the state of the elevator car 120 is abnormal, the control device 170 outputs an operation command signal to the emergency stop device 5. Thus, the emergency stop device 5 operates based on the operation command signal from the control device 170 to stop the elevator car 120.

In the present example, the example in which the state detection sensor detects the position information, the velocity information, and the acceleration information has been described, but the present invention is not limited to this. For example, the position information, the velocity information, and the acceleration information may be detected by different sensors. Further, control device 170 may selectively acquire position information, velocity information, and acceleration information alone, or may acquire a combination of a plurality of pieces of information.

The control device 170 and the elevator car 120 are not limited to the example of wired connection, and may be connected to transmit and receive signals wirelessly.

Hereinafter, the direction in which the elevator car 120 moves up and down is referred to as an up-down direction Z, and the direction perpendicular to the up-down direction Z and facing the elevator car 120 and the guide rail 201A is referred to as a first direction X. A direction orthogonal to the first direction X and also orthogonal to the lifting direction Z is set as a second direction Y.

1-2. structure of emergency stop device

Next, the detailed configuration of the safety device 5 will be described with reference to fig. 2 to 4.

Fig. 2 is a front view showing the emergency stop device 5.

As shown in fig. 2, the emergency stop device 5 includes two

brake mechanisms

10A and 10B, an operating mechanism 11, a drive mechanism 12, a first pull-up rod 13, and a second pull-up rod 14. The operating mechanism 11 is disposed on an upper beam 121 provided above the elevator car 120.

[ Driving mechanism ]

The drive mechanism 12 has a drive shaft 15, a first link member 16, a second link member 17, a first operating shaft 18, a second operating shaft 19, and a drive spring 20.

The first operating shaft 18 and the second operating shaft 19 are provided on an upper beam 121 provided on an upper portion of the elevator car 120. The first operating shaft 18 is provided at one end portion of the upper beam 121 in the first direction X, and the second operating shaft 19 is provided at the other end portion of the upper beam 121 in the first direction X. The first link member 16 is rotatably supported by the first operating shaft 18, and the second link member 17 is rotatably supported by the second operating shaft 19.

The first link member 16 and the second link member 17 are formed in a substantially T shape. The first link member 16 has a working piece 16a and a connecting piece 16 b. The working piece 16a protrudes substantially perpendicularly from the connecting piece 16 b. The working piece 16a is connected to the connecting piece 16b at one end side of the middle portion in the longitudinal direction. The operating piece 16a projects toward the guide rail 201A disposed on the negative side in the first direction X of the elevator car 120 (hereinafter, the left side in the drawing and the lower side in the drawing of the XYZ axes are the negative side, and the right side in the drawing and the upper side in the drawing of the XYZ axes are the positive side). The first pull-up bar 13 is connected to an end portion of the working piece 16a on the opposite side from the connecting piece 16b via a connecting portion 26.

The first link member 16 is rotatably supported on the first operating shaft 18 at a portion where the operating piece 16a and the connecting piece 16b are connected. A drive shaft 15 is connected to one end of the connecting piece 16b in the longitudinal direction via a connecting portion 25. A connecting member 41 of the operating mechanism 11, which will be described later, is connected to an end portion of the connecting piece 16b opposite to the end portion connected to the drive shaft 15, that is, the other end portion in the longitudinal direction. A length L1 of the connecting piece 16b from the first operating shaft 18 to the connecting member 41 is set longer than a length L2 of the connecting piece 16b from the first operating shaft 18 to the connecting portion 25 (L1 > L2).

The first link member 16 is disposed such that one end portion in the longitudinal direction of the connecting piece 16b faces upward in the vertical movement direction Z and the other end portion in the longitudinal direction of the connecting piece 16b faces downward in the vertical movement direction Z.

The second link member 17 has an operating piece 17a and a connecting piece 17 b. The working piece 17a protrudes substantially perpendicularly from the connecting piece 17 b. The working piece 17a is connected to an intermediate portion of the connecting piece 17b in the longitudinal direction. The operating piece 17a projects toward the guide rail 201B disposed on the positive side in the first direction X of the elevator car 120. The second pull-up bar 14 is connected to an end portion of the working piece 17a on the opposite side of the connecting piece 17b via a connecting portion 27.

A drive shaft 15 is connected to the other end portion of the connecting piece 17b in the longitudinal direction. The second link member 17 is rotatably supported by the second operating shaft 19 at a connecting portion between the operating piece 17a and the connecting piece 17 b. The second link member 17 is disposed such that one end portion in the longitudinal direction of the connecting piece 17b faces upward in the vertical movement direction Z and the other end portion in the longitudinal direction of the connecting piece 17b faces downward in the vertical movement direction Z.

One end portion of the drive shaft 15 in the first direction X is connected to the connecting piece 16b of the first link member 16, and the other end portion of the drive shaft 15 in the first direction X is connected to the connecting piece 17b of the second link member 17. Further, a drive spring 20 is provided at an axial intermediate portion of the drive shaft 15.

The drive spring 20 is constituted by a compression coil spring, for example. One end of the drive spring 20 is fixed to the upper beam 121 via a fixing portion 21, and the other end of the drive spring 20 is fixed to the drive shaft 15 via a pressing member 22. The drive spring 20 biases the drive shaft 15 toward the positive side in the first direction X via the pressing member 22.

When the operating mechanism 11 is operated, the drive shaft 15 is urged by the drive spring 20 to move toward the positive side in the first direction X. Thereby, the first link member 16 rotates about the first operating shaft 18 so that the end of the operating piece 16a to which the first pull-up rod 13 is connected faces upward in the lifting direction Z. The second link member 17 is pivoted about the second operating shaft 19 so that the end of the operating piece 17a to which the second up-draw bar 14 is connected faces upward in the vertical direction Z. As a result, the first upward pulling rod 13 is pulled upward in the vertical direction Z in conjunction with the second upward pulling rod 14.

Further, a first brake mechanism 10A is connected to an end portion of the first pull-up rod 13 opposite to the end portion to which the operating piece 16a is connected. A second brake mechanism 10B is connected to an end portion of the second pull-up rod 14 on the opposite side to the end portion to which the operating piece 17a is connected. The first pull-up rod 13 pulls up a pair of braking members 31 (see fig. 3) of the first braking mechanism 10A, which will be described later, in the upward and downward direction Z. The second pull-up rod 14 pulls up a pair of stopper members 31 of a second stopper mechanism 10B (see fig. 3) described later in the upward and downward direction Z.

[ brake mechanism ]

The first brake mechanism 10A and the second brake mechanism 10B are disposed at the lower end portions in the lifting direction Z of the elevator car 120. The first brake mechanism 10A is disposed opposite the guide rail 201A at one end in the first direction X of the elevator car 120. The second brake mechanism 10B is disposed opposite the guide rail 201B at the other end portion of the elevator car 120 in the first direction X.

Fig. 3 is a perspective view showing the

brake mechanisms

10A, 10B of the emergency stop device 5. The first brake mechanism 10A and the second brake mechanism 10B have the same configuration, and therefore the first brake mechanism 10A will be described here. Hereinafter, the first brake mechanism 10A is simply referred to as the brake mechanism 10A. A direction orthogonal to the ascending and descending direction Z and also orthogonal to the first direction X is defined as a second direction Y.

As shown in fig. 3, the brake mechanism 10A includes a pair of brake members 31 (only one side is shown in fig. 3), a pair of guide members 32, a coupling member 33, and an urging member 34.

The pair of stoppers 31 are disposed opposite to each other in the first direction X so as to sandwich the guide rail 201A. In a state before the emergency stop device 5 is operated, a predetermined gap is formed between the pair of braking members 31 and the guide rail 201A.

A surface of the stopper 31 facing the guide rail 201A is formed parallel to a surface of the guide rail 201A, that is, parallel to the lifting direction Z. The other surface of the stopper 31 on the opposite side to the one surface facing the guide rail 201A is inclined so as to approach the guide rail 201A from below in the lifting direction Z toward above. Thus, the stopper 31 is formed in a wedge shape.

The pair of stoppers 31 are supported by the linking member 33 to be movable in the first direction X. The pair of stoppers 31 are coupled by a coupling member 33. The first pull-up rod 13 is connected to the connecting member 33. Then, the first pull-up rod 13 is pulled up in the upward and downward direction Z, and the pair of stoppers 31 and the coupling member 33 move upward in the upward and downward direction Z.

The pair of stoppers 31 are movably supported by the pair of

guide members

32 and 32. The pair of

guide members

32, 32 are fixed to the elevator car 120 via a not-shown frame (see fig. 2). The pair of

guide members

32 and 32 are opposed to each other with a predetermined gap in the first direction X so as to sandwich the guide rail 201A and the pair of stoppers 31.

One surface of the guide member 32 facing the stopper 31 is inclined so as to approach the guide rail 201A as it goes upward in the lifting direction Z. Therefore, the distance between the surfaces of the pair of

guide members

32 and 32 facing the stopper 31 is narrowed upward in the vertical direction Z.

Further, an urging member 34 is disposed on the other surface of the guide member 32 opposite to the surface facing the stopper 31. The urging member 34 is formed of, for example, a leaf spring having a U-shaped cross section and cut in a horizontal direction orthogonal to the lifting direction Z. Both ends of the biasing member 34 face each other with a predetermined gap in the first direction X so as to sandwich the guide rail 201A. The guide member 32 is fixed to the opposite surfaces of the two end portions of the biasing member 34.

The biasing member 34 is not limited to a U-shaped plate spring, and may be a compression coil spring interposed between the guide member 32 and a housing, not shown, for example.

When the pair of stoppers 31 move upward in the lifting direction Z relative to the guide member 32, the pair of stoppers 31 move in a direction of approaching each other, that is, in a direction of approaching the guide rail 201A, by the guide member 32. When the pair of stoppers 31 move upward in the lifting direction Z, the pair of stoppers 31 are pressed against the guide rail 201A by the biasing force of the biasing member 34 via the guide member 32. Thereby, the lifting movement of the elevator car 120 is braked.

[ working mechanism ]

Next, the operating mechanism 11 will be described with reference to fig. 4 and 5.

Fig. 4 and 5 are explanatory views showing the operating mechanism 11.

As shown in fig. 4 and 5, the operating mechanism 11 includes a link member 41 connected to the first link member 16, an electromagnet core 43 showing an example of a holding drive unit, a movable iron core 44, a fixed member 45, and a holding return motor 46 showing an example of a holding return drive unit. The operating mechanism 11 includes a feed screw shaft 47 provided to the holding return motor 46, a feed nut 48, a coupling member 49, a pair of guide members 51, and two

detection switches

55a, 55 b. The operating mechanism 11 operates the driving mechanism 12.

The fixing member 45 is formed of a flat plate-like member. The fixing member 45 is fixed to the upper beam 121. The holding return motor 46 is fixed to the fixing member 45 via a fixing bracket 55. Further, a pair of guide members 51 are fixed to the fixing member 45 via a support bracket 52. Two

detection switches

55a and 55b are disposed on the fixing member 45.

The holding return motor 46 is disposed at the other end portion of the fixing member 45 in the first direction X. A feed screw shaft 47 is attached to the rotation shaft of the holding return motor 46. The feed screw shaft 47 protrudes from the holding return motor 46 toward one end in the first direction X. The feed screw shaft 47 is disposed such that the axial direction thereof is parallel to the first direction X. A feed nut 48 described later is screwed to the feed screw shaft 47.

The pair of

guide members

51, 51 are disposed at both ends of the fixing member 45 in the second direction Y. The pair of

guide members

51, 51 are supported by the support bracket 52, and are arranged such that the guide direction thereof is parallel to the first direction X. A feed screw shaft 47 attached to the holding and returning motor 46 is disposed between the pair of

guide members

51, 51. A coupling member 49 described later is slidably supported by the pair of

guide members

51 and 51 through a slide portion 49 a.

The first detection switch 55a is disposed at one end portion of the guide member 51 in the first direction X, and the second detection switch 55b is disposed at the other end portion of the guide member 51 in the first direction X. The first detection switch 55a and the second detection switch 55b are brought into contact with the coupling member 49 when the coupling member 49 slides along the guide member 51.

The connecting member 41 is formed with a long hole 41a extending in the lifting direction Z. A connecting pin 42 is slidably inserted into the elongated hole 41 a. The connecting pin 42 is attached to the other end portion in the longitudinal direction of the connecting piece 16b of the first link member 16. The connecting member 41 is connected to the connecting piece 16b via a connecting pin 42 so as to be swingable.

A movable iron core 44 is fixed to an end portion of the connecting member 41 opposite to the end portion connected to the connecting piece 16 b. The electromagnet core 43 faces the facing surface 44a of the movable iron core 44. The electromagnet core 43 is disposed between the pair of

guide members

51, 51.

The electromagnetic core 43 is provided with a coil. When the coil is energized, the electromagnet is constituted by the electromagnet core 43 and the coil. The facing surface 43a of the electromagnet core 43 facing the facing surface 44a of the movable iron core 44 serves as an attracting surface for attracting the movable iron core 44. In addition, an insertion hole 43b is formed in the electromagnet core 43. The insertion hole 43b is formed along the first direction X of the electromagnet core 43. The feed screw shaft 47 is inserted into the insertion hole 43 b.

A coupling member 49 is fixed to an end portion of the electromagnetic core 43 opposite to the facing surface 43 a. The coupling member 49 is provided with a sliding portion 49a and a feed nut 48. The sliding portions 49a are formed at both ends of the coupling member 49 in the second direction Y. The sliding portion 49a is slidably supported by the guide member 51. Therefore, the coupling member 49 and the solenoid core 43 fixed to the coupling member 49 are supported by the pair of guide members 51 so as to be movable in the first direction X. Further, the coupling member 49 is restricted from moving in the other direction than the first direction X by the pair of guide members 51.

Further, the feed nut 48 is fixed to an intermediate portion of the coupling member 49 in the second direction Y. A feed screw shaft 47 penetrates the coupling member 49 in the first direction X. A feed nut 48 provided on the coupling member 49 is screwed to the feed screw shaft 47.

As described above, the coupling member 49 to which the feed nut 48 is fixed is restricted from moving in the first direction X by the pair of guide members 51. Therefore, when the feed screw shaft 47 rotates, the feed nut 48 and the coupling member 49 move along the axial direction of the feed screw shaft 47 and the guide member 51, that is, the first direction X. Thereby, the solenoid core 43 fixed to the coupling member 49 also moves in the first direction X.

The holding and returning motor 46, the feed screw shaft 47, the feed nut 48, the coupling member 49, and the pair of

guide members

51 and 51 constitute a holding and returning mechanism that moves the solenoid 43 in a direction (in this example, the first direction X) toward and away from the movable core 44.

When the coupling member 49 is moved, the coupling member 49 abuts against the first detection switch 55a or the second detection switch 55 b. The position of the solenoid 43 fixed to the coupling member 49 in the first direction X can be detected by the first detection switch 55a and the second detection switch 55 b.

As described above, according to the emergency stop device 5 of the present embodiment, the drive spring 20 is disposed separately from the operating mechanism 11, and the drive spring 20 is connected to the operating mechanism 11 via the first link member 16 as a link mechanism. This makes it possible to reduce the size of the operating mechanism 11 and the size of the entire device.

1-3 example of operation of Emergency stop device

Next, an operation example of the safety device 5 having the above-described configuration will be described with reference to fig. 4 to 7. Here, the operation of the operating mechanism 11 of the safety device 5 will be described.

Fig. 6 is an explanatory diagram illustrating a state in which the operating mechanism 11 is operated. Hereinafter, the state shown in fig. 6 is referred to as a braking state. Fig. 7 is an explanatory diagram illustrating a reset operation of the operating mechanism 11.

[ operation in Standby State ]

First, the standby state of the safety device 5 will be described with reference to fig. 4 and 5.

As shown in fig. 4 and 5, in the standby state of the emergency stop device 5, the coupling member 49 and the solenoid 43 are disposed on the other end side in the first direction X of the pair of

guide members

51, 51. At this time, the connecting member 49 abuts on the second detection switch 55 b. The position of the solenoid 43 in the standby state can be detected by the second detection switch 55 b.

Further, the coil of the electromagnet core 43 is energized to excite the electromagnet core 43. This forms an electromagnet based on the electromagnetic core 43 and the coil. The movable core 44 is attracted to the facing surface 43a of the electromagnet core 43. Therefore, one end of the connecting piece 16b of the first link member 16 is held toward the positive side in the first direction X via the connecting member 41 to which the movable core 44 is fixed. As a result, the drive shaft 15 connected to the other end of the connecting piece 16b is biased in the negative side of the first direction X against the biasing force of the drive spring 20.

The driving spring 20 applies a force to the electromagnet core 43 in the negative side of the first direction X. Therefore, the holding return motor 46 is energized. Then, the holding return motor 46 rotates the feed screw shaft 47 in the following directions: the feed nut 48 is moved in the direction of the first direction X. This restricts the movement of the solenoid 43 and the coupling member 49 to the negative side of the first direction X due to the biasing force of the drive spring 20.

As described above, the length L1 of the connecting piece 16b from the first operating shaft 18 to the other end to which the connecting member 41 is connected is set longer than the length L2 of the connecting piece 16b from the first operating shaft 18 to the one end at which the connecting portion 25 is provided (L1 > L2). Therefore, the force applied to the other end of the connecting piece 16b can be made smaller than the force applied to the one end of the connecting piece 16 b. As a result, the electric power to be supplied to the solenoid core 43 and the holding return motor 46 can be reduced, and the capacities of the solenoid core 43 and the holding return motor 46 can be reduced.

[ operation to braking State ]

Next, the operation from the standby state to the braking state will be described with reference to fig. 6.

When the control device 170 determines that the descending speed of the elevator car 120 exceeds a predetermined speed when the elevator car 120 (see fig. 1 and 2) descends, the control device 170 outputs an operation command signal to the safety device 5. This cuts off the power supply to the solenoid core 43 and the holding return motor 46.

By cutting off the current supply in the electromagnet core 43, the magnetism of the electromagnet core 43 is eliminated. Thereby, the drive shaft 15 moves to the positive side in the first direction X by the urging force of the drive spring 20, and the one end portion of the first link member 16 also moves to the positive side in the first direction X together with the drive shaft 15. As a result, the first link member 16 rotates about the first operating shaft 18, and the second link member 17 rotates about the second operating shaft 19. In this way, the driving mechanism 12 is operated by the operating mechanism 11.

In addition, the movable core 44 is separated from the electromagnet core 43 by the rotation of the first link member 16. The movable core 44 and the coupling member 41 are not provided with a member for mechanically holding, such as a stopper. Therefore, it is possible to prevent the movable core 44 and the connecting member 41 from being hindered from moving due to friction with the stopper or the like. As a result, the turning operation of the first link member 16 can be smoothly performed, the safety device 5 can be reliably operated, and the reliability of the safety device 5 can be improved.

The first and second upward-pulling

rods

13 and 14 are pulled upward in the lifting direction Z in conjunction with each other by the rotation of the first and

second link members

16 and 17. Then, the first brake mechanism 10A connected to the first up-draw rod 13 and the second brake mechanism 10B connected to the second up-draw rod 14 (see fig. 2) operate. As a result, the pair of braking members 31 (see fig. 3) of the first braking mechanism 10A and the second braking mechanism 10B move upward in the lifting direction Z, and the pair of braking members 31 of the second braking mechanism 10B coupled to the second up-draw rod 14 sandwich the

guide rails

201A and 201B, whereby the lifting movement of the elevator car 120 is mechanically stopped.

[ reset action ]

Next, a reset operation of the operating mechanism 11 to reset from the braking state to the standby state will be described with reference to fig. 7.

Fig. 7 is an explanatory diagram illustrating a reset operation of the operating mechanism 11.

As shown in fig. 7, the holding/returning motor 46 is driven to rotate the feed screw shaft 47. Thereby, the feed nut 48 screwed with the feed screw shaft 47 moves toward the negative side in the first direction X. Therefore, the coupling member 49 to which the feed nut 48 is fixed moves along the pair of

guide members

51, 51 to the negative side in the first direction X. The electromagnet core 43 fixed to the coupling member 49 also moves toward the movable core 44, i.e., toward the negative side in the first direction X.

When the holding reset motor 46 is further driven from the state shown in fig. 7, the facing surface 43a of the electromagnet core 43 abuts against the facing surface 44a of the movable iron core 44. When the facing surface 43a of the electromagnet core 43 and the facing surface 44a of the movable iron core 44 are in contact, the coupling member 49 presses the first detection switch 55 a. This allows the first detection switch 55a to detect that the electromagnet core 43 is in contact with the movable iron core 44.

Then, the coil of the electromagnet core 43 is energized to excite the electromagnet core 43. Thereby, the movable core 44 is attracted to the opposed surface 43a of the electromagnet core 43. When the movable core 44 is attracted to the electromagnet core 43, the holding return motor 46 is driven in a direction opposite to the direction in which the electromagnet core 43 rotates when approaching the movable core 44. Thereby, the feed screw shaft 47 rotates, and the feed nut 48 screwed with the feed screw shaft 47 moves toward the positive side in the first direction X. Therefore, the coupling member 49, the solenoid core 43, the movable core 44 attracted to the solenoid core 43, and the coupling member 41 move toward the positive side in the first direction X.

By the link member 41 moving to the positive side in the first direction X, the first link member 16 rotates against the urging force of the drive spring 20. Further, a connecting pin 42 that connects the first link member 16 and the connecting member 41 is slidably inserted into an elongated hole 41a provided in the connecting member 41. Therefore, by sliding the link pin 42 in the elongated hole 41a, even if the link member 41 moves linearly in the first direction X, the first link member 16 can be rotated about the first operating shaft 18.

As described above, the length L1 of the connecting piece 16b from the first operating shaft 18 to the other end to which the connecting member 41 is connected is set longer than the length L2 of the connecting piece 16b from the first operating shaft 18 to the one end at which the connecting portion 25 is provided (L1 > L2). This can reduce the driving force when driving the holding return motor 46, and can reduce the capacity of the holding return motor 46.

The second detection switch 55b can be pressed by the coupling member 49 to detect that the coupling member 41, the movable core 44, and the electromagnet core 43 have moved to the standby state shown in fig. 4 and 5. This completes the reset operation of the operating mechanism 11.

2. Second embodiment example

Next, a second embodiment of the emergency stop device will be described with reference to fig. 8.

The emergency stop device according to the second embodiment differs from the emergency stop device according to the first embodiment in the structure of the operating mechanism. Therefore, the operation mechanism will be described here, and the same reference numerals are given to the parts common to the operation mechanism 11 of the safety device 5 according to the first embodiment, and redundant description is omitted.

As shown in fig. 8, the operating mechanism 60 includes a connecting member 61, an electromagnetic core 63, a movable core 64, a fixed member 65, a holding and returning motor 66, a feed screw shaft 67, a feed nut 68, a coupling member 69, and a guide member 71. The operating mechanism 60 includes a first detection switch 75a and a second detection switch 75 b.

The connecting member 61 is connected to the connecting piece 16b (see fig. 2) of the first link member 16 via a connecting pin 62. The connecting member 61, the electromagnet core 63, and the movable iron core 64 have the same configurations as the connecting member 41, the electromagnet core 43, and the movable iron core 44 of the first embodiment, and therefore, the descriptions thereof are omitted here.

A coupling member 69 is fixed to the other end portion of the electromagnet core 63 in the first direction X. The coupling member 69 is provided with a feed nut 68 and a slide portion 69 a. The slide portion 69a is disposed at one end portion of the coupling member 69 in the second direction Y, and the feed nut 68 is disposed at the other end portion of the coupling member 69 in the second direction Y.

The sliding portion 69a is supported by the guide member 71 so as to be slidable in the first direction X. The feed nut 68 is screwed to a feed screw shaft 67 attached to the holding and returning motor 66.

The guide member 71 is disposed at one end of the fixing member 65 in the second direction Y. The guide member 71 is disposed such that the guide direction thereof is parallel to the first direction X. A first detection switch 75a is disposed at one end of the guide member 71 in the first direction X, and a second detection switch 75b is disposed at the other end of the guide member 71 in the first direction X.

The holding return motor 66 is disposed at one end of the fixing member 65 in the first direction X and at the other end in the second direction Y. The feed screw shaft 67 is attached to the rotation shaft of the holding and returning motor 66, and protrudes from the holding and returning motor 66 toward the other end in the first direction X. The feed screw shaft 67 is supported by the support members 74, and is arranged parallel to the guide member 71 and the first direction X.

The holding return motor 66 and the feed screw shaft 67 are disposed on the side surface portion of the magnet core 63, specifically, on the positive side in the second direction Y. Thus, according to the actuator 60 of the second embodiment, the length in the first direction X can be shortened as compared with the actuator 11 of the first embodiment. As a result, the working mechanism 60 can be downsized.

The other structures are the same as those of the emergency stop device 5 according to the first embodiment, and therefore, description thereof will be omitted. The emergency stop device including the operating mechanism 60 as described above can also provide the same operational advantages as those of the emergency stop device 5 according to the first embodiment described above.

3. Third embodiment example

Next, a third embodiment of the emergency stop device will be described with reference to fig. 9.

The operating mechanism 60B of the safety device according to the third embodiment is obtained by changing the holding return motor 66 of the operating mechanism 60 according to the second embodiment. Therefore, the same reference numerals are given to the portions common to the operating mechanism 60 of the second embodiment, and redundant description is omitted.

As shown in fig. 9, the holding return motor 66B of the working mechanism 60B is a motor having an electromagnetic brake 66 c. The rotation of the rotary shaft of the return motor 66B is restricted by the operation of the electromagnetic brake 66 c. Thus, in the standby state of the operating mechanism 60B, the electromagnetic brake 66c is operated, and the rotation of the holding return motor 66B and the rotation of the feed screw shaft 67 attached to the holding return motor 66B are stopped.

In the operating mechanism 11 according to the first embodiment and the operating mechanism 60 according to the second embodiment, the holding

return motors

46 and 66 are energized during the standby state, and the

feed screw shafts

47 and 67 are restricted from rotating by the biasing force of the drive spring 20. In contrast, according to the operating mechanism 60B of the third embodiment, when the operating mechanism 60B is in the standby state, the electromagnetic brake 66c is operated, and it is not necessary to energize the holding return motor 66.

The other structures are the same as those of the operating mechanism 11 according to the first embodiment and the operating mechanism 60 according to the second embodiment, and therefore, their descriptions are omitted. The emergency stop device including the actuating mechanism 60B as described above can also provide the same operational advantages as the emergency stop device 5 according to the first embodiment and the emergency stop device according to the second embodiment described above.

4. Example of the fourth embodiment

Next, a fourth embodiment of the safety device will be described with reference to fig. 10.

The operating mechanism 60C of the safety device according to the fourth embodiment is obtained by changing the configuration of the electromagnet core 63 of the operating mechanism 60 according to the second embodiment. Therefore, the same reference numerals are given to the portions common to the operating mechanism 60 of the second embodiment, and redundant description is omitted.

As shown in fig. 10, the electromagnet core 63C of the operating mechanism 60C includes a first coil 76 and a second coil 77. The first coil 76 is disposed at one end portion of the electromagnet core 63C in the first direction X, that is, at an end portion on the facing surface 63a side. The second coil 77 is disposed at the other end portion of the electromagnet core 63C in the first direction X, that is, at the end portion on the holding surface 63C side opposite to the facing surface 63 a.

The operating mechanism 60C includes a fixed core 79. The fixed core 79 is fixed to the fixing member 65. The fixed core 79 is disposed at a position facing the holding surface 63C of the electromagnet core 63C.

In the standby state, the movable core 44 is attracted to the facing surface 63a of the electromagnet core 63C by energizing the first coil 76. Further, the fixed iron core 79 is attracted to the holding surface 63C of the electromagnet core 63C by the energization of the second coil 77. Thus, in the standby state, the electromagnet core 63C can be held by the fixed core 79 without applying power to the holding reset motor 66.

When the emergency stop device is activated, at least the first coil 76 is cut off from being energized. The second coil 77 may be cut off from the power supply. In the reset operation, the current supply to the second coil 77 is cut off. Thus, when the holding reset motor 66 is driven, the electromagnet core 63C can be moved to the negative side in the first direction X.

When the electromagnet core 63C abuts against the movable iron core 64, the first coil 76 is energized, and the movable iron core 64 is attracted to the electromagnet core 63C. Then, the holding return motor 66 is driven in the reverse direction to move the movable core 64 and the electromagnet core 63C in the first direction X toward the positive side. When the holding surface 63C of the electromagnet core 63C abuts against the fixed iron core 79, the second coil 77 is energized. Thereby, the electromagnet core 63C is attracted to the fixed iron core 79, and the electromagnet core 63C and the movable iron core 64 can be held in the standby state.

The timing of energizing the second coil 77 is not limited to when the holding surface 63C of the electromagnet core 63C abuts against the fixed core 79. For example, when the movable core 64 is attracted to the electromagnet core 63C, not only the first coil 76 but also the second coil 77 may be energized. This allows the power supply and the changeover switch, etc., connected to the first coil 76 and the second coil 77 to be shared.

In addition, a permanent magnet may be used as the fixed core 79. This allows the fixed core 79 to have a magnetic force for holding the electromagnetic core 63C, and the number of turns of the second coil 77 can be reduced.

The other structures are the same as those of the operating mechanism 11 according to the first embodiment and the operating mechanism 60 according to the second embodiment, and therefore, their descriptions are omitted. The emergency stop device including the operating mechanism 60C as described above can also provide the same operational advantages as the emergency stop device 5 according to the first embodiment and the emergency stop device according to the second embodiment described above.

5. Fifth embodiment example

Next, a fifth embodiment of the safety device will be described with reference to fig. 11.

The actuating mechanism 60D of the safety device according to the fifth embodiment is obtained by providing the retaining mechanism 80 to the actuating mechanism 60 according to the second embodiment. Therefore, the holding mechanism 80 will be described here, and the same reference numerals are given to the portions common to the operating mechanism 60 of the second embodiment, and redundant description will be omitted.

As shown in fig. 11, the operating mechanism 60D includes a holding mechanism 80 that holds the coupling member 69. The holding mechanism 80 includes a holding solenoid 81, which is an example of a holding driving unit, a holding arm 82, a rotating shaft 83, a hook 84, and an urging member 86.

The holding solenoid 81 is fixed to the fixing member 65D. The plunger 81a of the holding solenoid 81 protrudes from the holding solenoid 81 toward the negative side in the second direction Y. Further, a holding arm 82 is disposed at a position where the distal end portion of the plunger 81a abuts.

The holding arm 82 is rotatably supported by a rotating shaft 83 provided in the fixing member 65D. A hook portion 84 is provided at one end portion in the longitudinal direction of the holding arm 82. The holding arm 82 is supported by the pivot shaft 83, and has one end portion in the longitudinal direction thereof directed to the negative side in the first direction X. The hook portion 84 protrudes from one end portion of the holding arm 82 toward the second direction Y. The hook portion 84 is engaged with one end portion of the coupling member 69 in the first direction X in the standby state. This restricts the movement of the coupling member 69 and the solenoid core 63 to the negative side in the first direction X.

The urging member 86 is formed of, for example, a compression coil spring. One end of the urging member 86 is fixed between the rotating shaft 83 of the holding arm 82 and the hook 84. The other end of the biasing member 86 is fixed to the fixing member 65D or the upper beam 121 (see fig. 2). The biasing member 86 biases the holding arm 82 in a direction in which the hook portion 84 is separated from the coupling member 69. In the standby state, the holding arm 82 is held by the plunger 81a of the holding solenoid 81 at a position where the hook 84 engages with the coupling member 69.

When the operating mechanism 60D is operated or when the reset operation is performed, the power supply to the holding solenoid 81 is cut off. Thereby, the holding arm 82 is urged by the urging member 86 to rotate about the rotation shaft 83. Therefore, the engagement between the hook portion 84 and the coupling member 69 is released, and the coupling member 69 can move toward the negative side in the first direction X.

When the movable iron core 64 is attracted to the electromagnetic core 63 and the movable iron core 64, the electromagnetic core 63, and the coupling member 69 are returned to the standby position, the holding solenoid 81 is energized. When the holding solenoid 81 is energized, the plunger 81a protrudes from the holding solenoid 81 toward the negative side in the second direction Y, and the plunger 81a presses the holding arm 82. Thereby, the holding arm 82 is rotated against the urging force of the urging member 86. Then, the hook portion 84 provided in the holding arm 82 is engaged with the coupling member 69, whereby the movement of the coupling member 69 and the electromagnet core 63 to the negative side in the first direction X is restricted, and the return operation is completed.

Thus, according to the operating mechanism 60D of the fifth embodiment, when the operating mechanism 60D is in the standby state, the movement of the coupling member 69 and the solenoid core 63 can be restricted by the holding mechanism 80. As a result, the holding return motor 66 does not need to be energized.

The other structures are the same as those of the operating mechanism 11 according to the first embodiment and the operating mechanism 60 according to the second embodiment, and therefore, their descriptions are omitted. The emergency stop device having the operating mechanism 60D as described above can also provide the same operational advantages as the emergency stop device 5 according to the first embodiment and the emergency stop device according to the second embodiment described above.

6. Sixth embodiment example

Next, a sixth embodiment of the safety device will be described with reference to fig. 12.

The operating mechanism 11B of the safety device according to the sixth embodiment is obtained by providing an auxiliary link member 91 in the operating mechanism 11 according to the first embodiment. Therefore, the same reference numerals are given to the portions common to the working mechanism 11 of the first embodiment, and redundant description is omitted.

As shown in fig. 12, the working mechanism 11B has an auxiliary link member 91. One end in the longitudinal direction of the auxiliary link member 91 is rotatably supported by a pivot pin 92 provided on the upper beam 121. The rotation pin 92 is disposed in the vicinity of the first operating shaft 18. The other end in the longitudinal direction of the auxiliary link member 91 is connected to a second long hole 95b provided in the link member 95 via an auxiliary link pin 93.

A first long hole 95a and a second long hole 95b are formed in the linking member 95 to which the movable core 44 is attached. The first long hole 95a and the second long hole 95b are disposed at intervals in the first direction X in the connecting member 95. The first long hole 95a and the second long hole 95b are parallel to each other and extend in the vertical direction Z.

The connecting piece 16b of the first link member 16 is connected to the first long hole 95a via the connecting pin 42, and the auxiliary link member 91 is connected to the second long hole 95b via the auxiliary connecting pin 93. The auxiliary link member 91 is disposed substantially parallel to the connecting piece 16 b.

Here, in the operating mechanism 11 according to the first embodiment, when the movable core 44 is separated from the electromagnet core 43, the link member 41 rotates about the link pin 42. When the first link member 16 rotates in this state, the link member 41 or the movable core 44 may interfere with the fixed member 45 or the upper beam 121.

In contrast, according to the operating mechanism 11B of the sixth embodiment, even when the movable core 44 is separated from the electromagnet core 43, the auxiliary link member 91 can suppress a large change in the posture of the linking member 95. This prevents the coupling member 95 and the movable core 44 from interfering with the fixed member 45 and the upper beam 121 when the first link member 16 rotates.

Since the posture of the link member 95 can be maintained even if the first link member 16 rotates, the facing

surfaces

44a and 43a of the electromagnet core 43 and the movable core 44 can be opposed substantially in parallel when the electromagnet core 43 is brought close to the movable core 44 in the reset operation.

The other structures are the same as those of the emergency stop device 5 according to the first embodiment, and therefore, description thereof will be omitted. The emergency stop device including the operating mechanism 11B as described above can also provide the same operational advantages as the emergency stop device 5 according to the first embodiment described above.

The auxiliary link member 91 may be provided in the operating mechanism 60 of the second embodiment and the operating mechanisms 60B, 61C, and 61D of the third, fourth, and fifth embodiments.

The example in which the auxiliary link member 91 is provided to maintain the posture of the connecting member has been described, but the present invention is not limited thereto. For example, in order to balance the weight of the connecting member with the movable core, a weight may be provided at an end portion of the connecting member opposite to the end portion on the movable core side.

It is to be noted that the present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention described in the claims.

In the above-described embodiment, the example in which the direction in which the electromagnet core of the actuator 11 moves is set substantially parallel to the first direction X has been described, but the present invention is not limited to this. The moving direction of the electromagnet core of the operating mechanism 11 may be set substantially parallel to the ascending/descending direction Z and the second direction Y, or may be a direction inclined with respect to the first direction X, the second direction Y, and the ascending/descending direction Z. The first link member 16 and the second link member 17 may be disposed at both ends of the elevator car 120 in the second direction Y, and the drive shaft 15 may be disposed along the second direction Y.

The elevator body is not limited to the elevator car 120, and the counterweight 140 may be applied. Further, the emergency stop device may be provided to the counterweight 140 to emergently stop the upward and downward movement of the counterweight 140.

In the present specification, terms such as "parallel" and "orthogonal" are used, but they mean not only strictly "parallel" and "orthogonal" but also "substantially parallel" and "substantially orthogonal" within a range in which they can function, including "parallel" and "orthogonal".

Description of reference numerals:

1 elevator, 5 emergency stop device, 10A, 10 first brake mechanism, 11B, 60B, 60C, 60D operating mechanism, 12 drive mechanism, 13, 14 pull-up rod, 15 drive shaft, 16 first link member, 17 second link member, 16a, 17B operating piece, 16B, 17B connecting piece, 18 first operating shaft, 19 second operating shaft, 20 drive spring, 41 connecting member, 41a long hole, 42 connecting pin, 43 electromagnetic core, 43a opposed surface, 43B insertion hole, 44 movable iron core, 44a opposed surface, 45 fixed member, 46 holding return motor, 47 feed screw shaft, 48 feed nut, 49 connecting member, 49a sliding portion, 51 guide member, 55a, 55B detection switch, 76 first coil, 77 second coil, 79 fixed iron core, 80 holding mechanism, 81 holding solenoid, 81a, plunger 82 holding arm, 83 rotating shaft, hook 84, force applying member 86, auxiliary link member 91, pivot pin 92, auxiliary link pin 93, winding machine 100, elevator shaft 110, elevator car (elevator body) 120, upper beam 121, main rope 130, counterweight (elevator body) 140, diverting pulley 150, machine room 160, control device 170,

guide rails

201A and 201B.

Claims

1. An emergency stop device, wherein,

the emergency stop device includes:

a braking mechanism which is provided on the elevating body, has a braking member for clamping the guide rail on which the elevating body slides, and stops the movement of the elevating body;

the driving mechanism is connected with the braking part of the braking mechanism and pulls up the braking part; and

a working mechanism connected with the driving mechanism and making the driving mechanism work,

the drive mechanism includes:

the pull-up rod is connected with the braking piece;

a link member connected to the pull-up rod and rotatably supported by a working shaft provided in the lifting body;

a drive shaft connected to one end of the link member; and

a drive spring that is provided to the drive shaft and urges the drive shaft in a direction in which the drive shaft pulls up the stopper via the link member and the pull-up rod,

the working mechanism is provided with:

a connecting member connected to the other end of the link member on the opposite side across the operating shaft, to which one end of the drive shaft is connected;

a movable core fixed to the connecting member;

an electromagnet core that causes the movable iron core to be attracted to and separated from each other; and

and a holding return mechanism that moves the electromagnet core in a direction to approach and separate from the movable iron core.

2. The emergency stop device according to claim 1,

in the link member, a length from the working shaft to the other end portion to which the link member is connected is set to be longer than a length from the working shaft to the one end portion to which the drive shaft is connected.

3. The emergency stop device according to claim 1,

the holding and resetting mechanism comprises:

a holding reset motor fixed to an upper portion of the elevating body;

a feed screw shaft connected to a rotation shaft of the holding and returning motor and extending in a direction in which the electromagnet core approaches and separates from the movable iron core;

a feed nut screwed to the feed screw shaft;

a coupling member to which the feed nut is fixed and which is fixed to the electromagnet core; and

and a guide member that supports the coupling member so as to be movable in a direction in which the electromagnet core approaches and separates from the movable iron core.

4. The emergency stop device according to claim 3,

the holding and returning motor is disposed on a side surface portion of the electromagnet core in a direction orthogonal to a direction of approaching and separating the electromagnet core to and from the movable iron core.

5. The emergency stop device according to claim 3,

the hold-reset motor has an electromagnetic brake.

6. The emergency stop device according to claim 3,

the emergency stop device includes a fixed core fixed to the elevating body and disposed to face an end of the electromagnet core opposite to an end of the electromagnet core facing the movable core,

the electromagnetic core is attached to the fixed iron core.

7. The emergency stop device according to claim 3,

the emergency stop device includes a holding mechanism that releasably restricts movement of the coupling member.

8. The emergency stop device according to claim 1,

the emergency stop device includes an auxiliary link member rotatably supported by the vertically movable body, and an end portion of the auxiliary link member opposite to the end portion rotatably supported by the vertically movable body is connected to the connecting member.

9. An elevator comprising an elevating body which is moved up and down in an elevating path,

the elevator is provided with:

a guide rail which is provided upright in the lifting passage and supports the lifting body to be slidable; and

an emergency stop device for stopping the movement of the vertically movable body based on the state of the vertically movable body moving up and down,

the emergency stop device includes:

a braking mechanism which is provided to the elevating body, has a braking member for clamping a guide rail on which the elevating body slides, and stops movement of the elevating body;

a driving mechanism connected with the braking member of the braking mechanism and pulling up the braking member along the guide rail; and

the drive mechanism includes:

the pull-up rod is connected with the braking piece;

a drive shaft connected to one end of the link member; and

the working mechanism is provided with:

a movable core fixed to the connecting member;