WO2020110437A1 - Dispositif d'arrêt d'urgence et ascenseur - Google Patents

Dispositif d'arrêt d'urgence et ascenseur Download PDF

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Publication number
WO2020110437A1
WO2020110437A1 PCT/JP2019/037074 JP2019037074W WO2020110437A1 WO 2020110437 A1 WO2020110437 A1 WO 2020110437A1 JP 2019037074 W JP2019037074 W JP 2019037074W WO 2020110437 A1 WO2020110437 A1 WO 2020110437A1
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WO
WIPO (PCT)
Prior art keywords
holding
iron core
core
link member
shaft
Prior art date
Application number
PCT/JP2019/037074
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English (en)
Japanese (ja)
Inventor
智久 早川
洋輔 久保
Original Assignee
株式会社日立製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to CN201980067847.2A priority Critical patent/CN112867687B/zh
Publication of WO2020110437A1 publication Critical patent/WO2020110437A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
    • B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges

Definitions

  • the present invention relates to an emergency stop device for stopping a car in an emergency and an elevator equipped with this emergency stop device.
  • a rope-type elevator is a long object such as a main rope and a compensating rope that connects a car and a counterweight, and a governor rope used to detect the speed of a car or a counterweight.
  • a safety device it is stipulated that the elevator be provided with an emergency stop device that automatically stops the operation of the car when the speed of the car moving up and down along the guide rail exceeds a specified value. Has been done.
  • Patent Document 1 describes a technique having a wedge-shaped friction member that is brought into contact with and separated from a rail by a drive spring and an electromagnet device, and provided with a return motor that restores the electromagnet device while storing energy in the drive spring.
  • Patent Document 1 describes that the return motor drives a return member that pushes the electromagnet device to return it to the holding position, and the return member allows the holding position to move to the release position of the electromagnet device. .. Further, Patent Document 1 describes that the drive spring is accumulated by the return motor together with the return spring, the return motor is rotated by the return spring, and the return member is biased to the standby position.
  • Patent Document 1 has a problem that the entire device becomes large because the drive spring is arranged from one end to the other end in the upper part of the car.
  • the purpose of this is to provide an emergency stop device and an elevator that can reduce the size of the entire device in consideration of the above problems.
  • an emergency stop device includes a brake element that is provided on an elevating body and holds a guide rail on which the elevating body slides, and a braking mechanism that stops the movement of the elevating body. And a driving mechanism and an actuating mechanism.
  • the drive mechanism is connected to the brake element of the braking mechanism and pulls up the brake element.
  • the actuation mechanism is connected to the drive mechanism and actuates the drive mechanism.
  • the drive mechanism includes a pulling rod connected to the brake element, a link member, a drive shaft, and a drive spring.
  • the link member is connected to the pulling rod and is rotatably supported by an operating shaft provided on the lifting body.
  • the drive shaft is connected to one end of the link member.
  • the drive spring is provided on the drive shaft, and biases the drive shaft in the direction in which the drive shaft pulls up the brake shoe via the link member and the pulling rod.
  • the actuating mechanism includes a connecting member, a movable iron core, an electromagnetic core, and a holding/restoring mechanism.
  • the connecting member is connected to the other end of the link member opposite to the one end to which the drive shaft of the link member is connected, with the operating shaft interposed therebetween.
  • the movable iron core is fixed to the connecting member.
  • the electromagnetic core attracts and separates the movable core.
  • the holding/returning mechanism moves the electromagnetic core toward and away from the movable iron core.
  • the elevator is an elevator equipped with a lifting body that moves up and down in the hoistway,
  • the guide rail is provided upright in the hoistway to slidably support the lifting body, and an emergency stop device for stopping 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.
  • FIG. 3 is a perspective view showing a braking mechanism of the safety gear device according to the first embodiment.
  • FIG. 3 is a front view showing an operation mechanism of the safety gear device according to the first embodiment.
  • It is a top view which shows the actuation mechanism of the safety gear device concerning a 1st embodiment.
  • It is explanatory drawing which shows the state in which the actuation mechanism of the safety gear device concerning the example of 1st Embodiment operated.
  • It is explanatory drawing which shows the return operation
  • FIG. 1 is a schematic configuration diagram showing a configuration example of the elevator of this example.
  • the elevator 1 of this example moves up and down in a hoistway 110 formed in a building structure.
  • the elevator 1 includes a car 120 showing an example of a lifting body on which a person or luggage is placed, a main rope 130, and a counterweight 140 showing another example of the lifting body. Further, the elevator 1 includes a hoisting machine 100 and an emergency stop device 5.
  • the elevator 1 also includes a control device 170 and a warp wheel 150.
  • the hoistway 110 is formed in a building structure, and a machine room 160 is provided at the top of the hoistway 110.
  • the hoisting machine 100 and the warp wheel 150 are arranged.
  • a main rope 130 is wound around the sheave of the drawing in the hoisting machine 100.
  • a warp wheel 150 on which the main rope 130 is mounted is provided near the hoisting machine 100.
  • the upper part of the car 120 is connected to one end of the main rope 130, and the upper part of the counterweight 140 is connected to the other end of the main rope 130.
  • the car 120 and the counterweight 140 move up and down the hoistway 110.
  • the direction in which the car 120 and the counterweight 140 move up and down is referred to as the up-and-down direction Z.
  • the car 120 is slidably supported by two guide rails 201A and 201B via a slider (not shown).
  • the counterweight 140 is slidably supported by the weight-side guide rail 201C via a slider (not shown).
  • the two guide rails 201A and 201B and the weight side guide rail 201C extend along the up-and-down direction Z in the hoistway 110.
  • the car 120 is provided with an emergency stop device 5 for making an emergency stop of the vertical movement of the car 120.
  • the detailed configuration of the safety device 5 will be described later.
  • a control device 170 is installed in the machine room 160.
  • the control device 170 is connected to the car 120 via connection wiring (not shown). Then, the control device 170 outputs a control signal to the car 120. Further, the control device 170 is installed in the hoistway 110, and is connected to a state detection sensor (not shown) that detects the state of the car 120.
  • Information detected by the state detection sensor includes position information of the car 120 moving up and down in the hoistway 110, speed information of the car 120, acceleration information of the car 120, and the like.
  • position information of the car 120 for example, in a multi-car elevator in which a plurality of cars 120 move up and down in the same hoistway 110, the interval between two vertically adjacent cars 120 is closer than a predetermined interval. This is the abnormal approach information detected when the user does.
  • the speed information of the car 120 is, for example, abnormal descent speed information detected when the descent speed of the car 120 reaches 1.3 times or more the rated speed.
  • the acceleration information of the car 120 is, for example, abnormal acceleration information detected when the acceleration of the 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 car 120 is abnormal or normal based on the information detected by the state detection sensor. When the control device 170 determines that the state of the car 120 is abnormal, the control device 170 outputs an operation command signal to the safety device 5. As a result, the safety device 5 operates based on the operation command signal from the control device 170 to stop the car 120.
  • the state detection sensor has described the example of detecting the position information, the velocity information, and the acceleration information, but the present invention is not limited to this.
  • position information, speed information, and acceleration information may be detected by different sensors.
  • the control device 170 may select the position information, the velocity information, and the acceleration information and acquire them individually, or may acquire a plurality of information in combination.
  • control device 170 and the car 120 are not limited to the example of being connected by wire, and may be connected by wireless so that signals can be transmitted and received.
  • the direction in which the car 120 moves up and down is referred to as the elevating direction Z
  • the direction orthogonal to the elevating direction Z and facing the car 120 and the guide rail 201A is referred to as the first direction X
  • a direction orthogonal to the first direction X and also orthogonal to the ascending/descending direction Z is referred to as a second direction Y.
  • FIG. 2 is a front view showing the safety device 5.
  • the safety device 5 has two braking mechanisms 10A and 10B, an actuating mechanism 11, a drive mechanism 12, a first pull-up rod 13, and a second pull-up rod 14. There is.
  • the operating mechanism 11 is arranged on a crosshead 121 provided on an upper portion of the car 120.
  • the drive mechanism 12 includes 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 a crosshead 121 installed above the car 120.
  • the first operating shaft 18 is provided at one end of the crosshead 121 in the first direction X
  • the second operating shaft 19 is provided at the other end of the crosshead 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 an operating piece 16a and a connecting piece 16b.
  • the operating piece 16a projects substantially vertically from the connecting piece 16b.
  • the operating piece 16a is connected to one end side of the connecting piece 16b with respect to the intermediate portion in the longitudinal direction.
  • the operating piece 16a is the minus side of the car 120 in the first direction X (referred to as the left side in the figure.
  • the left side of the plane of the XYZ axes in the figure and the lower side of the plane are the minus sides, and the XYZ axes
  • the right side of the plane of the drawing and the upper side of the plane of the drawing are set to be the positive side) toward the guide rail 201A.
  • the first pull-up rod 13 is connected via a connecting portion 26 to the end of the operating piece 16a opposite to the connecting piece 16b.
  • the first link member 16 is rotatably supported by the first operating shaft 18 at the location where the operating piece 16a and the connecting piece 16b are connected.
  • the 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 actuating mechanism 11, which will be described later, is connected to the end of the connecting piece 16b opposite to the end connected to the drive shaft 15, that is, the other end in the longitudinal direction.
  • the length L1 from the first operating shaft 18 to the connecting member 41 in the connecting piece 16b is set longer than the length L2 from the first operating shaft 18 to the connecting portion 25 in the connecting piece 16b (L1>L2). ..
  • the first link member 16 is arranged with one end in the longitudinal direction of the connecting piece 16b facing upward in the elevating direction Z, and the other end in the longitudinal direction of the connecting piece 16b facing downward in the elevating direction Z.
  • the second link member 17 has an operating piece 17a and a connecting piece 17b.
  • the operating piece 17a projects substantially vertically from the connecting piece 17b. Further, the operating piece 17a is connected to the middle portion of the connecting piece 17b in the longitudinal direction. The operating piece 17a projects toward the guide rail 201B arranged on the plus side of the car 120 in the first direction X.
  • the second pull-up rod 14 is connected to the end of the operating piece 17a opposite to the connecting piece 17b via a connecting portion 27.
  • the drive shaft 15 is connected to the other end of the connecting piece 17b in the longitudinal direction.
  • the second link member 17 is rotatably supported by the second operating shaft 19 at the connection portion between the operating piece 17a and the connecting piece 17b.
  • the second link member 17 is arranged such that one end of the connecting piece 17b in the longitudinal direction faces upward in the elevating direction Z and the other end of the connecting piece 17b in the longitudinal direction faces downward in the elevating direction Z.
  • One end 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 of the drive shaft 15 in the first direction X is of the second link member 17. It is connected to the connection piece 17b.
  • a drive spring 20 is provided at an intermediate portion of the drive shaft 15 in the axial direction.
  • the drive spring 20 is composed of, for example, a compression coil spring. One end of the drive spring 20 is fixed to the crosshead 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. Then, the drive spring 20 biases the drive shaft 15 toward the plus side in the first direction X via the pressing member 22.
  • the drive shaft 15 is biased by the drive spring 20 and moves toward the plus side in the first direction X.
  • 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 vertical direction Z.
  • the second link member 17 rotates about the second operating shaft 19 so that the end of the operating piece 17a to which the second pull-up rod 14 is connected faces upward in the vertical direction Z.
  • the first pull-up rod 13 and the second pull-up rod 14 are interlocked with each other and pulled up in the up-and-down direction Z.
  • first braking mechanism 10A is connected to the end of the first pulling rod 13 opposite to the end to which the actuating piece 16a is connected.
  • the second braking mechanism 10B is connected to the end of the second pulling rod 14 opposite to the end to which the actuating piece 17a is connected.
  • first pull-up rod 13 pulls up a pair of brake elements 31 (see FIG. 3) of the first braking mechanism 10A, which will be described later, in the upward and downward directions Z.
  • second pull-up rod 14 pulls up a pair of brake elements 31 of a second braking mechanism 10B (see FIG. 3) described later in the upward and downward directions Z.
  • the first braking mechanism 10A and the second braking mechanism 10B are arranged at the lower end of the car 120 in the up-and-down direction Z.
  • the first braking mechanism 10A is arranged to face the guide rail 201A at one end of the car 120 in the first direction X.
  • the second braking mechanism 10B is arranged to face the guide rail 201B at the other end of the car 120 in the first direction X.
  • FIG. 3 is a perspective view showing the braking mechanisms 10A and 10B of the safety device 5. Since the first braking mechanism 10A and the second braking mechanism 10B have the same configuration, only the first braking mechanism 10A will be described here. Hereinafter, the first braking mechanism 10A will be simply referred to as the braking mechanism 10A. Further, a direction orthogonal to the ascending/descending direction Z and also orthogonal to the first direction X is referred to as a second direction Y.
  • the braking mechanism 10A includes a pair of brake elements 31 (only one side is shown in FIG. 3), a pair of guide members 32, 32, a connecting member 33, and a biasing member 34. is doing.
  • the pair of brake elements 31 are arranged to face each other in the first direction X with the guide rail 201A interposed therebetween. Then, in a state before the safety device 5 is activated, a predetermined space is formed between the pair of brake elements 31 and the guide rail 201A.
  • the one surface of the brake shoe 31 facing the guide rail 201A is formed parallel to the one surface of the guide rail 201A, that is, parallel to the ascending/descending direction Z.
  • the other surface of the brake element 31 opposite to the one surface facing the guide rail 201A is inclined so as to approach the guide rail 201A from the lower side to the upper side in the up-and-down direction Z. Therefore, the brake shoe 31 is formed in a wedge shape.
  • the pair of brake elements 31 are supported by the connecting member 33 so as to be movable in the first direction X.
  • the pair of brake shoes 31 are connected by a connecting member 33.
  • the first pull-up rod 13 is connected to the connecting member 33. Then, when the first pulling rod 13 is pulled upward in the up-and-down direction Z, the pair of brake elements 31 and the connecting member 33 move upward in the up-and-down direction Z.
  • the pair of brake elements 31 are movably supported by the pair of guide members 32, 32.
  • the pair of guide members 32, 32 are fixed to the car 120 (see FIG. 2) via a frame (not shown).
  • the pair of guide members 32, 32 face each other with a predetermined gap in the first direction X with the guide rail 201A and the pair of brake elements 31 interposed therebetween.
  • the one surface of the guide member 32 facing the brake shoe 31 is inclined so as to approach the guide rail 201A as it goes upward in the vertical direction Z. Therefore, the distance between the surfaces of the pair of guide members 32, 32 facing the brake shoe 31 becomes narrower in the upward and downward directions Z.
  • a biasing member 34 is arranged on the other surface of the guide member 32 opposite to the one surface facing the brake shoe 31.
  • the biasing member 34 is formed of, for example, a leaf spring having a U-shaped cross section cut in the horizontal direction orthogonal to the up-and-down direction Z. Both ends of the urging member 34 face each other with a predetermined gap in the first direction X with the guide rail 201A interposed therebetween. Then, the guide members 32 are fixed to the surfaces of the urging members 34 that face each other at both ends.
  • the urging member 34 is not limited to the U-shaped leaf spring, and for example, a compression coil spring may be used and interposed between the guide member 32 and a frame body (not shown). ..
  • the pair of brake elements 31 move relatively upward in the up-and-down direction Z with respect to the guide member 32, the pair of brake elements 31 move in a direction in which they approach each other by the guide member 32, that is, a direction in which they approach the guide rail 201A. To do. Further, when the pair of brake elements 31 move upward in the up-and-down direction Z, the pair of brake elements 31 are pressed against the guide rail 201A by the biasing force of the biasing member 34 via the guide member 32. As a result, the vertical movement of the car 120 is braked.
  • the actuating mechanism 11 includes a connecting member 41 connected to the first link member 16, an electromagnetic core 43 showing an example of a holding and driving unit, a movable iron core 44, and a fixing member 45. And a holding/returning motor 46 showing an example of the holding/returning driving unit. Further, the operating mechanism 11 includes a feed screw shaft 47 provided in the holding/returning motor 46, a feed nut 48, a connecting member 49, a pair of guide members 51 and 51, and two detection switches 55a and 55b. I have it. Then, the operating mechanism 11 operates the drive mechanism 12.
  • the fixing member 45 is formed of a flat plate member.
  • the fixing member 45 is fixed to the crosshead 121.
  • the holding/returning motor 46 is fixed to the fixing member 45 via a fixing bracket 55.
  • a pair of guide members 51 are fixed to the fixing member 45 via a support bracket 52. Further, the fixed member 45 is provided with two detection switches 55a and 55b.
  • the holding/returning motor 46 is arranged at the other end of the fixing member 45 in the first direction X.
  • a feed screw shaft 47 is attached to the rotation shaft of the holding and returning motor 46.
  • the feed screw shaft 47 projects from the holding/returning motor 46 toward one end in the first direction X.
  • the feed screw shaft 47 is arranged such that its axial direction is parallel to the first direction X.
  • a feed nut 48 described later is screwed onto the feed screw shaft 47.
  • the pair of guide members 51, 51 are arranged 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 the guide direction thereof is arranged in parallel with the first direction X.
  • a feed screw shaft 47 attached to the holding/returning motor 46 is arranged between the pair of guide members 51, 51.
  • a connecting member 49 described below is slidably supported by the pair of guide members 51, 51 via a slide portion 49a.
  • the first detection switch 55a is arranged at one end of the guide member 51 in the first direction X
  • the second detection switch 55b is arranged at the other end of the guide member 51 in the first direction X.
  • the first detection switch 55a and the second detection switch 55b come into contact with the connecting member 49 when the connecting member 49 slides along the guide member 51.
  • connection member 41 is formed with a long hole 41a extending in the up-and-down direction Z.
  • the connection pin 42 is slidably inserted into the long hole 41a.
  • the connection pin 42 is attached to the other end of the connection piece 16b of the first link member 16 in the longitudinal direction.
  • the connecting member 41 is swingably connected to the connecting piece 16b via the connecting pin 42.
  • a movable iron core 44 is fixed to the end of the connecting member 41 opposite to the end connected to the connection piece 16b.
  • the electromagnetic core 43 faces the facing surface 44 a of the movable iron core 44. Further, the electromagnetic core 43 is arranged between the pair of guide members 51, 51.
  • a coil is provided on the electromagnetic core 43.
  • the electromagnetic core 43 and the coil form an electromagnet.
  • the facing surface 43a of the electromagnetic core 43 which faces the facing surface 44a of the movable iron core 44, serves as an attraction surface for attracting the movable iron core 44.
  • the electromagnetic core 43 has an insertion hole 43b formed therein.
  • the insertion hole 43b is formed along the first direction X in the electromagnetic core 43.
  • the feed screw shaft 47 is inserted into the insertion hole 43b.
  • a connecting member 49 is fixed to the end of the electromagnetic core 43 opposite to the facing surface 43a.
  • the connecting member 49 is provided with a slide portion 49a and a feed nut 48.
  • the slide portions 49a are formed at both ends of the connecting member 49 in the second direction Y.
  • the slide portion 49a is slidably supported by the guide member 51. Therefore, the connecting member 49 and the electromagnetic core 43 fixed to the connecting member 49 are supported by the pair of guide members 51 so as to be movable along the first direction X. Further, the movement of the connecting member 49 in a direction other than the first direction X is restricted by the pair of guide members 51.
  • the feed nut 48 is fixed to an intermediate portion of the connecting member 49 in the second direction Y.
  • the feed screw shaft 47 penetrates through the connecting member 49 along the first direction X.
  • the feed nut 48 provided on the connecting member 49 is screwed onto the feed screw shaft 47.
  • the connecting member 49 to which the feed nut 48 is fixed is restricted from moving in the direction other than 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 connecting member 49 move along the axial direction of the feed screw shaft 47 and the guide member 51, that is, along the first direction X. As a result, the electromagnetic core 43 fixed to the connecting member 49 also moves along the first direction X.
  • the holding/returning motor 46, the feed screw shaft 47, the feed nut 48, the connecting member 49, and the pair of guide members 51, 51 move the electromagnetic core 43 toward and away from the movable iron core 44 (in this example, the first A holding and returning mechanism for moving in the direction X) is constructed.
  • the connecting member 49 When the connecting member 49 moves, the connecting member 49 contacts the first detection switch 55a or the second detection switch 55b. The position in the first direction X of the electromagnetic core 43 fixed to the connecting member 49 can be detected by the first detection switch 55a and the second detection switch 55b.
  • the drive spring 20 is arranged separately from the actuation mechanism 11, and the drive spring 20 and the actuation mechanism 11 are connected via the first link member 16 which is a link mechanism. Connected.
  • the operating mechanism 11 can be downsized, and the entire device can be downsized.
  • FIG. 6 is an explanatory diagram showing a state in which the operating mechanism 11 has operated.
  • the state shown in FIG. 6 is referred to as a braking state.
  • FIG. 7 is an explanatory diagram showing a return operation of the operating mechanism 11.
  • the standby state of the safety device 5 will be described with reference to FIGS. 4 and 5.
  • the connecting member 49 and the electromagnetic core 43 are arranged on the other end side of the pair of guide members 51, 51 in the first direction X. ..
  • the connecting member 49 is in contact with the second detection switch 55b.
  • the second detection switch 55b can detect that the electromagnetic core 43 is in the standby position.
  • the coil of the electromagnetic core 43 is energized and the electromagnetic core 43 is excited.
  • an electromagnet including the electromagnetic core 43 and the coil is formed.
  • the movable core 44 is attracted to the facing surface 43 a of the electromagnetic core 43. Therefore, the one end portion of the connection piece 16b of the first link member 16 is held toward the plus side in the first direction X via the connection member 41 to which the movable iron core 44 is fixed.
  • the drive shaft 15 connected to the other end of the connection piece 16b is urged to the minus side in the first direction X against the urging force of the drive spring 20.
  • the drive spring 20 applies a force to the electromagnetic core 43 in the negative direction in the first direction X. Therefore, the holding/returning motor 46 is energized. Then, the holding return motor 46 rotates the feed screw shaft 47 in the direction in which the feed nut 48 moves to the plus side in the first direction X. This restricts the electromagnetic core 43 and the connecting member 49 from moving to the negative side in the first direction X by the biasing force of the drive spring 20.
  • the length L1 from the first operating shaft 18 of the connecting piece 16b to the other end of the connecting piece 41 is one end of the connecting piece 16b where the first operating shaft 18 and the connecting portion 25 are provided.
  • the length is set to be longer than the length L2 (L1>L2). Therefore, the force applied to the other end of the connection piece 16b can be made smaller than the force applied to one end of the connection piece 16b.
  • the electric power supplied to the electromagnetic core 43 and the holding/returning motor 46 can be reduced, and the capacities of the electromagnetic core 43 and the holding/returning motor 46 can be reduced.
  • the magnetic power of the electromagnetic core 43 is cut off, and the magnetism of the electromagnetic core 43 is erased.
  • the drive shaft 15 moves to the plus side in the first direction X by the urging force of the drive spring 20, and one end of the first link member 16 also moves to the plus side in the first direction X together with the drive shaft 15.
  • 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 drive mechanism 12 is operated by the operation mechanism 11.
  • the movable core 44 is separated from the electromagnetic core 43 by the rotation of the first link member 16.
  • the movable iron core 44 and the connecting member 41 are not provided with a mechanical holding member such as a stopper. Therefore, it is possible to prevent the movement of the movable iron core 44 and the connecting member 41 from being hindered by friction with the stopper or the like. As a result, the rotating operation of the first link member 16 can be performed smoothly, the emergency stop device 5 can be reliably operated, and the reliability of the emergency stop device 5 can be enhanced.
  • the first pull-up rod 13 and the second pull-up rod 14 are interlocked and pulled upward in the vertical direction Z.
  • the first braking mechanism 10A connected to the first pull-up rod 13 and the second braking mechanism 10B connected to the second pull-up rod 14 (see FIG. 2) operate.
  • the pair of brake elements 31 (see FIG. 3) of the first braking mechanism 10A and the second braking mechanism 10B move upward in the ascending/descending direction Z, and the pair of second braking mechanisms 10B coupled to the second pull-up rod 14 are connected.
  • the elevator 31 holds the guide rails 201 ⁇ /b>A and 201 ⁇ /b>B so that the vertical movement of the car 120 is mechanically stopped.
  • FIG. 7 is an explanatory diagram showing the returning operation of the operating mechanism 11.
  • the holding and returning motor 46 is driven to rotate the feed screw shaft 47.
  • the feed nut 48 screwed onto the feed screw shaft 47 moves toward the minus side in the first direction X. Therefore, the connecting member 49, to which the feed nut 48 is fixed, moves to the minus side in the first direction X along the pair of guide members 51, 51. Then, the electromagnetic core 43 fixed to the connecting member 49 also moves in the direction approaching the movable iron core 44, that is, in the negative direction of the first direction X.
  • the facing surface 43a of the electromagnetic core 43 contacts the facing surface 44a of the movable iron core 44.
  • the connecting member 49 presses the first detection switch 55a. Accordingly, the contact of the electromagnetic core 43 with the movable iron core 44 can be detected by the first detection switch 55a.
  • the coil of the electromagnetic core 43 is energized to excite the electromagnetic core 43.
  • the movable iron core 44 is attracted to the facing surface 43 a of the electromagnetic core 43.
  • the holding/returning motor 46 is driven in the direction opposite to the direction in which the electromagnetic core 43 is rotated when the electromagnetic core 43 approaches the movable core 44.
  • the feed screw shaft 47 rotates, and the feed nut 48 screwed onto the feed screw shaft 47 moves toward the plus side in the first direction X. Therefore, the connecting member 49, the electromagnetic core 43, the movable core 44 attracted to the electromagnetic core 43, and the connecting member 41 move toward the plus side in the first direction X.
  • connection pin 42 for connecting the first link member 16 and the connection member 41 is slidably inserted into a long hole 41 a provided in the connection member 41. Therefore, even if the connection member 41 moves linearly along the first direction X by sliding the connection pin 42 in the long hole 41a, the first link member 16 and the first operating shaft 18 are not moved. It can be rotated to the center.
  • the length L1 from the first operating shaft 18 of the connecting piece 16b to the other end to which the connecting member 41 is connected is such that the connecting portion 25 is provided from the first operating shaft 18 of the connecting piece 16b. It is set longer than the length L2 to one end (L1>L2). As a result, the driving force for driving the holding/returning motor 46 can be suppressed to be small, and the capacity of the holding/returning motor 46 can be reduced.
  • connection member 49 pressing the second detection switch 55b it is possible to detect that the connection member 41, the movable iron core 44, and the electromagnetic core 43 have moved to the standby state shown in FIGS. 4 and 5. This completes the return operation of the operating mechanism 11.
  • FIG. 8 is an explanatory view showing an operating mechanism of the safety device according to the second embodiment.
  • the emergency stop device according to the second embodiment differs from the emergency stop device according to the first embodiment in the configuration of the operating mechanism. Therefore, the operation mechanism will be described here, and portions common to the operation mechanism 11 of the safety gear device 5 according to the first embodiment will be denoted by the same reference numerals and redundant description will be omitted.
  • the actuating mechanism 60 includes a connection member 61, an electromagnetic core 63, a movable iron core 64, a fixing member 65, a holding/returning motor 66, a feed screw shaft 67, a feed nut 68, and a connection member.
  • a member 69 and a guide member 71 are provided.
  • the actuation mechanism 60 also includes a first detection switch 75a and a second detection switch 75b.
  • the connecting member 61 is connected to the connecting piece 16b (see FIG. 2) of the first link member 16 via the connecting pin 62.
  • the connection member 61, the electromagnetic core 63, and the movable iron core 64 have the same configurations as the connection member 41, the electromagnetic core 43, and the movable iron core 44 according to the first embodiment, and therefore the description thereof will be given here. Is omitted.
  • a connecting member 69 is fixed to the other end of the electromagnetic core 63 in the first direction X.
  • the connecting member 69 is provided with a feed nut 68 and a slide portion 69a.
  • the slide portion 69a is arranged at one end of the connecting member 69 in the second direction Y, and the feed nut 68 is arranged at the other end of the connecting member 69 in the second direction Y.
  • the slide portion 69a is supported by the guide member 71 so as to be slidable in the first direction X. Further, the feed nut 68 is screwed onto the feed screw shaft 67 attached to the holding/returning motor 66.
  • the guide member 71 is arranged at one end of the fixing member 65 in the second direction Y.
  • the guide member 71 is arranged such that its guide direction is parallel to the first direction X.
  • the first detection switch 75a is arranged at one end of the guide member 71 in the first direction X
  • the second detection switch 75b is arranged at the other end of the guide member 71 in the first direction X.
  • the holding/returning motor 66 is arranged at one end of the fixing member 65 in the first direction X and at the other end of the fixing member 65 in the second direction Y.
  • the feed screw shaft 67 is attached to the rotation shaft of the holding/returning motor 66, and projects from the holding/returning motor 66 toward the other end in the first direction X.
  • the feed screw shaft 67 is supported by the support members 74, 74 and is arranged in parallel with the guide member 71 and the first direction X.
  • the holding/returning motor 66 and the feed screw shaft 67 are arranged on the side surface of the electromagnetic core 63, specifically, on the plus side in the second direction Y.
  • the actuating mechanism 60 according to the second embodiment can make the length in the first direction X shorter than that of the actuating mechanism 11 according to the first embodiment.
  • the operating mechanism 60 can be downsized.
  • FIG. 9 is an explanatory view showing an operating mechanism of the safety gear device according to the third embodiment.
  • the operating mechanism 60B of the safety device according to the third embodiment is a modification of the holding/returning motor 66 of the operating mechanism 60 according to the second embodiment. Therefore, the same parts as those of the actuating mechanism 60 according to the second embodiment are designated by the same reference numerals, and the duplicated description will be omitted.
  • the holding/returning motor 66B of the operating mechanism 60B is a motor having an electromagnetic brake 66c.
  • the rotation of the rotation shaft of the holding/returning motor 66B is restricted by the operation of the electromagnetic brake 66c.
  • the electromagnetic brake 66c is operated to stop the rotation of the holding/returning motor 66B and the rotation of the feed screw shaft 67 attached to the holding/returning motor 66B.
  • the holding/returning motors 46, 66 are energized in the standby state, and the feed screw shafts 47, 67 are supplied. Is restricted from rotating by the urging force of the drive spring 20.
  • the actuating mechanism 60B according to the third embodiment it is necessary to energize the holding and returning motor 66 by actuating the electromagnetic brake 66c when the actuating mechanism 60B is in the standby state. Disappear.
  • FIG. 10 is an explanatory view showing an operating mechanism of the safety gear device according to the fourth embodiment.
  • the operation mechanism 60C of the safety device according to the fourth embodiment is obtained by changing the configuration of the electromagnetic core 63 of the operation mechanism 60 according to the second embodiment. Therefore, the same parts as those of the actuating mechanism 60 according to the second embodiment are designated by the same reference numerals, and the duplicated description will be omitted.
  • the electromagnetic core 63C of the operating mechanism 60C has a first coil 76 and a second coil 77.
  • the first coil 76 is arranged at one end of the electromagnetic core 63C in the first direction X, that is, at the end on the opposite surface 63a side.
  • the second coil 77 is arranged at the other end of the electromagnetic core 63C in the first direction X, that is, at the end on the side of the holding surface 63c opposite to the facing surface 63a.
  • the actuating mechanism 60C has a fixed iron core 79.
  • the fixed iron core 79 is fixed to the fixing member 65.
  • the fixed iron core 79 is arranged at a position facing the holding surface 63c of the electromagnetic core 63C.
  • the electromagnetic core 63C can be held by the fixed iron core 79 without energizing the holding/returning motor 66.
  • the first coil 76 is energized to attract the movable iron core 64 to the electromagnetic core 63C. Then, the hold/return motor 66 is driven in the opposite direction to move the movable iron core 64 and the electromagnetic core 63C in the first direction X toward the plus side.
  • the second coil 77 is energized. As a result, the electromagnetic core 63C is attracted to the fixed iron core 79, and the electromagnetic core 63C and the movable iron core 64 can be held in the standby state.
  • the timing at which the second coil 77 is energized is not limited to the timing when the holding surface 63c of the electromagnetic core 63C contacts the fixed iron core 79.
  • the second coil 77 may be energized as well as the first coil 76.
  • the power supply connected to the first coil 76 and the second coil 77 and the changeover switch can be shared.
  • a permanent magnet may be applied as the fixed iron core 79. Accordingly, the fixed iron core 79 can be given a magnetic force for holding the electromagnetic core 63C, and the number of turns of the second coil 77 can be reduced.
  • FIG. 11 is an explanatory diagram showing an operating mechanism of the safety device according to the fifth embodiment.
  • the operating mechanism 60D of the safety device according to the fifth embodiment is the operating mechanism 60 according to the second embodiment provided with a holding mechanism 80. Therefore, the holding mechanism 80 will be described here, and portions common to the actuating mechanism 60 according to the second embodiment will be denoted by the same reference numerals and redundant description will be omitted.
  • the operating mechanism 60D includes a holding mechanism 80 that holds the connecting member 69.
  • the holding mechanism 80 includes a holding solenoid 81, which is an example of a holding drive unit, a holding arm 82, a rotating shaft 83, a hook portion 84, and a biasing member 86.
  • the holding solenoid 81 is fixed to the fixing member 65D.
  • the plunger 81 a of the holding solenoid 81 projects from the holding solenoid 81 toward the minus side in the second direction Y.
  • a holding arm 82 is arranged at a position where the tip of the plunger 81a abuts.
  • the holding arm 82 is rotatably supported by a rotation shaft 83 provided on the fixed member 65D.
  • a hook portion 84 is provided at one end of the holding arm 82 in the longitudinal direction.
  • the holding arm 82 is supported by the rotating shaft 83, and one end portion in the longitudinal direction thereof faces the negative side in the first direction X.
  • the hook portion 84 projects from the one end of the holding arm 82 in the second direction Y. Then, the hook portion 84 engages with one end portion of the connecting member 69 located in the standby state in the first direction X. As a result, the movement of the connecting member 69 and the electromagnetic core 63 to the minus side in the first direction X is restricted.
  • the biasing member 86 is formed of, for example, a compression coil spring. One end of the biasing member 86 is fixed between the rotating shaft 83 and the hook portion 84 of the holding arm 82. The other end of the biasing member 86 is fixed to the fixing member 65D or the cross head 121 (see FIG. 2). The urging member 86 urges the holding arm 82 in the direction in which the hook portion 84 separates from the connecting 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 portion 84 engages with the connecting member 69.
  • the actuation mechanism 60D When the actuation mechanism 60D is actuated, or when the return operation is performed, the energization of the holding solenoid 81 is cut off. As a result, the holding arm 82 rotates about the rotation shaft 83 biased by the biasing member 86. Therefore, the engagement between the hook portion 84 and the connecting member 69 is released, and the connecting member 69 becomes movable toward the minus side in the first direction X.
  • the holding solenoid 81 is energized.
  • the plunger 81a projects from the holding solenoid 81 toward the minus side in the second direction Y, and the holding arm 82 is pressed by the plunger 81a.
  • the holding arm 82 rotates against the biasing member 86 against the biasing force.
  • the hook portion 84 provided on the holding arm 82 is engaged with the connecting member 69, whereby the movement of the connecting member 69 and the electromagnetic core 63 in the negative direction of the first direction X is restricted, and the returning operation is completed. To do.
  • the movement of the connecting member 69 and the electromagnetic core 63 can be restricted by the holding mechanism 80 when the actuation mechanism 60D is in the standby state. As a result, it becomes unnecessary to energize the holding/returning motor 66.
  • FIG. 12 is an explanatory view showing an operating mechanism of the safety gear device according to the sixth embodiment.
  • the operating mechanism 11B of the safety device according to the sixth embodiment is the operating mechanism 11 according to the first embodiment provided with an auxiliary link member 91. Therefore, the same parts as those of the actuating mechanism 11 according to the first embodiment are designated by the same reference numerals, and the duplicated description will be omitted.
  • the operating mechanism 11B has an auxiliary link member 91.
  • One end of the auxiliary link member 91 in the longitudinal direction is rotatably supported by a rotary pin 92 provided on the crosshead 121.
  • the rotating pin 92 is arranged near the first operating shaft 18.
  • the other end of the auxiliary link member 91 in the longitudinal direction is connected to the second elongated hole 95b provided in the connection member 95 via the auxiliary connection pin 93.
  • a first elongated hole 95a and a second elongated hole 95b are formed in the connecting member 95 to which the movable iron core 44 is attached.
  • the first elongated hole 95a and the second elongated hole 95b are arranged in the connection member 95 with a space in the first direction X.
  • the first elongated hole 95a and the second elongated hole 95b are parallel to each other and extend along the up-and-down direction Z.
  • connection piece 16b of the first link member 16 is connected to the first elongated hole 95a via the connection pin 42, and the auxiliary link member 91 is connected to the second elongated hole 95b via the auxiliary connection pin 93.
  • the auxiliary link member 91 is arranged substantially parallel to the connecting piece 16b.
  • the connecting member 41 rotates about the connecting pin 42.
  • the connection member 41 or the movable iron core 44 may interfere with the fixed member 45 and the cross head 121.
  • the posture of the connecting member 95 is significantly changed by the auxiliary link member 91 even when the movable iron core 44 is separated from the electromagnetic core 43. Can be suppressed. Accordingly, it is possible to prevent the connecting member 95 and the movable iron core 44 from interfering with the fixed member 45 and the cross head 121 when the first link member 16 rotates.
  • the attitude of the connecting member 95 can be maintained even if the first link member 16 rotates, the electromagnetic core 43 and the movable iron core 44 face each other when the electromagnetic core 43 approaches the movable iron core 44 in the returning operation.
  • the surfaces 44a and 43a can be made to face each other substantially in parallel.
  • auxiliary link member 91 may be provided in the actuation mechanism 60 according to the second embodiment and the actuation mechanisms 60B, 61C, 61D according to the third, fourth and fifth embodiments.
  • auxiliary link member 91 in order to maintain the posture of the connecting member has been described, but the present invention is not limited to this.
  • a counterweight may be provided at the end of the connecting member opposite to the movable iron core side end.
  • the moving direction of the electromagnetic core of the actuating mechanism 11 may be set substantially parallel to the ascending/descending direction Z and the second direction Y, or inclined with respect to the first direction X, the second direction Y and the ascending/descending direction Z. It may be in the same direction.
  • the first link member 16 and the second link member 17 may be arranged at both ends of the car 120 in the second direction Y, and the drive shaft 15 may be arranged along the second direction Y.
  • the lifting body is not limited to the car 120, and a counterweight 140 may be applied.
  • An emergency stop device may be provided on the counterweight 140 to stop the lifting and lowering movement of the counterweight 140 in an emergency.
  • Connection member 41a...long hole, 42...connection pin, 43...electromagnetic core, 43a...opposing surface, 43b...insertion hole, 44...movable core, 44a...opposing surface, 45...fixing member, 46...holding return motor, 47 ...Feed screw shaft, 48...Feed nut, 49...Coupling member, 49a...Slide part, 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, 84...hook part, 86...biasing member, 91...auxiliary link member, 92...turning pin, 93...auxiliary Connection pins, 100...
  • Hoisting machine 110... Hoistway, 120... Car (elevator), 121... Crosshead, 130... Main rope, 140... Counterweight (elevator) 150... Warping wheel, 160... Machine Room, 170... Control device, 201A, 201B... Guide rail

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
  • Braking Arrangements (AREA)

Abstract

La présente invention concerne un dispositif d'arrêt d'urgence qui comprend un mécanisme de freinage, un mécanisme d'entraînement et un mécanisme d'actionnement. Le mécanisme d'entraînement comprend une barre de levage, un élément de liaison, un arbre d'entraînement et un ressort d'entraînement. L'élément de liaison est supporté en rotation dans un arbre de travail. Le ressort d'entraînement est disposé sur l'arbre d'entraînement et sollicite l'arbre d'entraînement. Le mécanisme d'actionnement comprend un élément de connexion, un noyau de fer mobile, un noyau électromagnétique et un mécanisme de maintien et de restauration. L'élément de connexion est connecté à l'autre extrémité de l'élément de liaison. Le mécanisme de maintien et de restauration déplace le noyau électromagnétique dans une direction, afin qu'il soit plus proche du noyau de fer mobile et plus loin de celui-ci.
PCT/JP2019/037074 2018-11-28 2019-09-20 Dispositif d'arrêt d'urgence et ascenseur WO2020110437A1 (fr)

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JPWO2022003768A1 (fr) * 2020-06-29 2022-01-06
CN114426236A (zh) * 2020-10-29 2022-05-03 株式会社日立制作所 紧急停止装置及电梯
WO2022201529A1 (fr) * 2021-03-26 2022-09-29 株式会社日立製作所 Appareil du type ascenseur
WO2022224351A1 (fr) * 2021-04-20 2022-10-27 株式会社日立製作所 Appareil ascenseur
WO2023026423A1 (fr) * 2021-08-26 2023-03-02 株式会社日立製作所 Dispositif d'ascenseur
CN116419904A (zh) * 2020-12-07 2023-07-11 株式会社日立制作所 电梯装置
US12122641B2 (en) 2020-06-29 2024-10-22 Hitachi, Ltd. Elevator device

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CN115397760B (zh) * 2020-04-21 2023-04-28 株式会社日立制作所 紧急制动装置以及电梯
WO2022013939A1 (fr) * 2020-07-14 2022-01-20 株式会社日立製作所 Dispositif d'ascenseur
WO2022038656A1 (fr) * 2020-08-17 2022-02-24 株式会社日立製作所 Dispositif d'ascenseur
WO2022038665A1 (fr) * 2020-08-18 2022-02-24 株式会社日立製作所 Dispositif d'ascenseur
JP7470651B2 (ja) 2021-01-26 2024-04-18 株式会社日立製作所 エレベータ装置
WO2022162874A1 (fr) * 2021-01-29 2022-08-04 株式会社日立製作所 Appareil d'ascenseur
CN116419905A (zh) * 2021-02-10 2023-07-11 株式会社日立制作所 电梯装置
WO2023037538A1 (fr) * 2021-09-13 2023-03-16 株式会社日立製作所 Appareil d'ascenseur
JPWO2023233462A1 (fr) * 2022-05-30 2023-12-07

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JP2009227353A (ja) * 2008-03-19 2009-10-08 Mitsubishi Electric Corp エレベータ緊急停止装置およびその点検方法
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JP7407936B2 (ja) 2020-06-29 2024-01-04 株式会社日立製作所 エレベータ装置
WO2022003768A1 (fr) * 2020-06-29 2022-01-06 株式会社日立製作所 Dispositif ascenseur
JPWO2022003768A1 (fr) * 2020-06-29 2022-01-06
US12122641B2 (en) 2020-06-29 2024-10-22 Hitachi, Ltd. Elevator device
CN114426236A (zh) * 2020-10-29 2022-05-03 株式会社日立制作所 紧急停止装置及电梯
CN114426236B (zh) * 2020-10-29 2023-08-29 株式会社日立制作所 紧急停止装置及电梯
CN116419904B (zh) * 2020-12-07 2024-08-30 株式会社日立制作所 电梯装置
CN116419904A (zh) * 2020-12-07 2023-07-11 株式会社日立制作所 电梯装置
WO2022201529A1 (fr) * 2021-03-26 2022-09-29 株式会社日立製作所 Appareil du type ascenseur
JP7505119B2 (ja) 2021-04-20 2024-06-24 株式会社日立製作所 エレベータ装置
WO2022224351A1 (fr) * 2021-04-20 2022-10-27 株式会社日立製作所 Appareil ascenseur
WO2023026423A1 (fr) * 2021-08-26 2023-03-02 株式会社日立製作所 Dispositif d'ascenseur
JP7562006B2 (ja) 2021-08-26 2024-10-04 株式会社日立製作所 エレベータ装置

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