WO2023223404A1 - エレベーター - Google Patents

エレベーター Download PDF

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Publication number
WO2023223404A1
WO2023223404A1 PCT/JP2022/020459 JP2022020459W WO2023223404A1 WO 2023223404 A1 WO2023223404 A1 WO 2023223404A1 JP 2022020459 W JP2022020459 W JP 2022020459W WO 2023223404 A1 WO2023223404 A1 WO 2023223404A1
Authority
WO
WIPO (PCT)
Prior art keywords
upper frame
car
operating mechanism
drive
elevator according
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2022/020459
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
康司 伊藤
貴 安部
秀隆 座間
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to EP22942609.3A priority Critical patent/EP4527776A4/en
Priority to CN202280095572.5A priority patent/CN119032059A/zh
Priority to JP2024521411A priority patent/JP7765623B2/ja
Priority to PCT/JP2022/020459 priority patent/WO2023223404A1/ja
Publication of WO2023223404A1 publication Critical patent/WO2023223404A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/02—Cages, i.e. cars
    • B66B11/0206—Car frames

Definitions

  • the present invention relates to an elevator equipped with an emergency stop device that stops a car in an emergency.
  • rope-type elevators have long ropes such as a main rope and compensator rope that connect the car and the counterweight, and a governor rope used to detect the speed of the car or the counterweight. have.
  • elevators are required to be equipped 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 in which a braking mechanism that clamps a guide rail in an emergency stop device and an operating device that operates this braking mechanism are housed in a vertical frame that constitutes a car.
  • Patent Document 1 the braking mechanism and operating device of the emergency stop device were installed within the vertical frame of the car, resulting in an increase in the size of the vertical frame.
  • the technique described in Patent Document 1 has a problem in that the size of the cage of the car becomes smaller due to the increase in the size of the vertical frame.
  • the purpose of this invention is to provide an elevator that takes the above problems into consideration and can suppress the vertical frame from increasing in size.
  • the elevator consists of a car having a car compartment, a guide rail to guide the movement of the car, an upper frame placed at the top of the car, and a car to move the car. Equipped with an emergency stop device to stop the
  • the emergency stop device includes a brake mechanism having a brake that clamps the guide rail, a drive mechanism that operates the brake mechanism, and an operation mechanism that operates the drive mechanism.
  • the drive mechanism and the operating mechanism are housed in the upper frame.
  • FIG. 1 is a schematic configuration diagram showing an elevator car according to a first embodiment
  • FIG. FIG. 2 is a cross-sectional view taken along line AA shown in FIG. 1.
  • FIG. 7 is a sectional view showing the upper frame and operating mechanism of an elevator according to a second embodiment.
  • FIG. 7 is a cross-sectional view showing the upper frame and operating mechanism of an elevator according to a third embodiment. It is a front view which shows the upper frame of the elevator concerning the example of 4th Embodiment.
  • FIG. 1 is a schematic configuration diagram showing an example of the configuration of the car of this example.
  • FIG. 2 is a cross-sectional view taken along the line AA shown in FIG.
  • the elevator car 1 of this example moves up and down a hoistway formed within a building structure. Further, the car 1 is slidably supported by guide rails 201A and 201B erected within the hoistway.
  • the car 1 includes a car chamber 120 for carrying people and luggage, an upper frame (crosshead) 121, a lower frame 130, a vertical frame 140, and an emergency stop device.
  • the upper frame 121 is arranged at the upper part of the car room 120 in the vertical direction
  • the lower frame 130 is arranged at the lower part of the car room 120 in the vertical direction.
  • the vertical frame 140 connects the upper frame 121 and the lower frame 130 and is arranged along the vertical direction of the car room 120.
  • the emergency stop device includes two braking mechanisms 10A and 10B, an operating mechanism 11, a drive mechanism 12, a first lifting member 13A, and a second lifting member 13B. As shown in FIGS. 1 and 2, the operating mechanism 11 and the drive mechanism 12 are arranged on the upper frame 121. Note that the detailed configuration of the upper frame 121 and the installation state of the operating mechanism 11 and the drive mechanism 12 will be described later.
  • the braking mechanisms 10A and 10B are arranged at the lower ends of the vertical frame 140 in the vertical direction.
  • the braking mechanisms 10A and 10B have a pair of brakes (not shown).
  • the pair of brakes are arranged opposite to each other with guide rails 201A and 201B in between.
  • the pair of brakes are connected to lifting members 13A and 13B.
  • the pair of brakes When the pair of brakes are pulled up in the vertical direction by the pulling members 13A and 13B, they sandwich the guide rails 201A and 201B. As a result, the vertical movement of the car 1 is braked by the braking mechanisms 10A and 10B.
  • FIG. 3 is a diagram showing the operating mechanism 11 and the drive mechanism 12.
  • the drive mechanism 12 includes a drive shaft 15, a first pull-up lever 16A, a second pull-up lever 16B, drive shafts 18, 18, and a drive spring 20. .
  • the drive shaft 18 is installed at both ends of the upper frame 121 in the width direction perpendicular to the up-down direction.
  • the drive shaft 18 rotatably supports pull-up levers 16A and 16B.
  • the first pull-up lever 16A and the second pull-up lever 16B are formed in a substantially T-shape.
  • a drive shaft 18 is provided at the T-shaped intersection of the first pull-up lever 16A and the second pull-up lever 16B.
  • a first pulling member 13A is connected to the first pulling lever 16A via a connecting portion 26A, and a second lifting member 13B is connected to the second lifting lever 16B via a connecting portion 26B. Further, as shown in FIG. 3, the first lifting lever 16A is connected to the drive shaft 15 via a connecting portion 25. Similarly, the second lifting lever 16B is connected to the drive shaft 15 via a connecting portion (not shown). Further, the end of the first lifting lever 16A opposite to the connecting portion 25 is connected to a connecting member 41 of the operating mechanism 11, which will be described later, via a lever bracket 37.
  • the drive shaft 15 is arranged within the upper frame 121 along the width direction of the upper frame 121.
  • One end of the drive shaft 15 in the axial direction is connected to the first pull-up lever 16A, and the other end of the drive shaft 15 in the axial direction is connected to the second pull-up lever 16B.
  • a drive spring 20 is provided at an axially intermediate portion of the drive shaft 15 .
  • the drive spring 20 is composed of, for example, a compression coil spring. One end of the drive spring 20 is fixed to the upper frame 121 via a fixing part, and the other end of the drive spring 20 is fixed to the drive shaft 15 via a pressing member. The drive spring 20 urges the drive shaft 15 toward the other end in the axial direction via the pressing member.
  • the drive shaft 15 is urged by the drive spring 20 and moves toward the other end in the axial direction.
  • the first lifting lever 16A rotates around the drive shaft 18 such that the end to which the first lifting member 13A is connected faces upward in the vertical direction.
  • the second lifting lever 16B rotates around the drive shaft 18 such that the end to which the second lifting member 13B is connected faces upward in the vertical direction.
  • the first pulling member 13A and the second lifting member 13B are pulled upward in the vertical direction, and the braking mechanisms 10A and 10B operate.
  • the operating mechanism 11 includes a connecting member 41, an electromagnetic core 43, a movable core 44, a base plate 45, a drive motor 46, a feed screw shaft 47, a feed nut 48, and a drive motor. , is equipped with. The operating mechanism 11 then operates the drive mechanism 12.
  • the base plate 45 is formed of a flat member.
  • the base plate 45 is fixed to a mounting bracket 123 (see FIGS. 1 and 2) of the upper frame 121, which will be described later.
  • a first shaft support portion 54 and a second shaft support portion 55 are fixed to the upper surface portion of the base plate 45 in the vertical direction.
  • the first shaft support part 54 is arranged at one end of the base plate 45, and the second shaft support part 55 is arranged at the other end of the base plate 45.
  • the first shaft support part 54 and the second shaft support part 55 are arranged to face each other.
  • a feed screw shaft 47 is rotatably supported by the first shaft support portion 54 and the second shaft support portion 55 .
  • a drive motor 46 is arranged in the second shaft support portion 55 . Note that the drive motor 46 may be provided on the first shaft support portion 54 side.
  • the rotation shaft of the drive motor 46 is attached to the feed screw shaft 47 via a coupling.
  • a trapezoidal thread is formed on the outer peripheral surface of the feed screw shaft 47.
  • a feed nut 48 is screwed onto the feed screw shaft 47.
  • An electromagnetic core 43 is fixed to the feed nut 48.
  • the electromagnetic core 43 is provided with a coil. When power is supplied to the coil from a power supply (not shown) and the coil is energized, the electromagnetic core 43 and the coil constitute an electromagnet.
  • the electromagnetic core 43 faces a movable core 44 attached to a connecting member 41, which will be described later.
  • the feed screw shaft 47 rotates.
  • the rotational force of the feed screw shaft 47 is converted into a force along the axial direction by the threaded portion and the screw hole.
  • the feed nut 48 then moves along the axial direction of the feed screw shaft 47.
  • the electromagnetic core 43 to which the feed nut 48 is fixed also moves along the axial direction of the feed screw shaft 47.
  • the feed nut 48 moves toward the first shaft support portion 54 side. Then, when the drive motor rotates in the opposite direction (reverse rotation), the feed nut 48 moves toward the second shaft support portion 55 side.
  • the second shaft support portion 55 is arranged at a standby position for the feed nut 48 and the electromagnetic core 43. Then, when the operating mechanism 11 returns from the standby state and the braking state to the return state, the electromagnetic core 43 comes into contact with the second shaft support portion 55 via the feed nut 48 .
  • a connecting hole 41a is formed in the connecting member 41.
  • a connecting pin 36 provided on the lever bracket 37 is inserted into the connecting hole 41a. Therefore, the connecting member 41 is rotatably connected to the first lifting lever 16A via the lever bracket 37.
  • a movable iron core 44 is fixed to the connecting member 41.
  • the movable core 44 is supported by the connecting member 41 and faces the electromagnetic core 43 fixed to the feed nut 48 . In the standby state shown in FIG. 3, the movable iron core 44 is attracted to the electromagnetic core 43.
  • the drive motor 46, the feed screw shaft 47, and the feed nut 48 constitute a moving mechanism that moves the electromagnetic core 43 toward and away from the movable core 44.
  • the electromagnetic core 43 is arranged at the other end of the feed screw shaft 47 in the axial direction. Further, the coil of the electromagnetic core 43 is energized, and the electromagnetic core 43 is excited. As a result, an electromagnet is formed by the electromagnetic core 43 and the coil.
  • the movable iron core 44 is attracted to the electromagnetic core 43. Therefore, one end portion of the first lifting lever 16A is held via the connecting member 41 to which the movable iron core 44 is fixed. As a result, the drive shaft 15 connected to the other end of the first pull lever 16A is urged toward one end in the axial direction against the urging force of the drive spring 20.
  • control unit determines that the descending speed of the car 1 exceeds a predetermined speed when the car 1 is moving downward, the control unit outputs an operation command signal to the emergency stop device. As a result, power to the electromagnetic core 43 is cut off. Note that the power supply to the electromagnetic core 43 is interrupted not only when the car 1 exceeds the speed, but also when the elevator is out of power.
  • the magnetism of the electromagnetic core 43 is erased.
  • the drive shaft 15 moves toward the other end in the axial direction due to the biasing force of the drive spring 20, and one end of the first lifting lever 16A also moves together with the drive shaft 15 toward the other end in the axial direction.
  • the first pull-up lever 16A and the second pull-up lever 16B rotate around the drive shaft 18. In this way, the drive mechanism 12 is operated by the operating mechanism 11.
  • the movable iron core 44 is separated from the electromagnetic core 43 by rotating the first pull-up lever 16A.
  • the connecting member 41 can be moved without being affected by the frictional force and holding force between the feed screw shaft 47 and the feed nut 48, which are the moving mechanisms. Can be done.
  • the upper frame 121 representing the crosshead is a so-called hat-shaped steel material whose upper end in the vertical direction is closed and its lower end in the vertical direction is open.
  • the upper frame 121 extends along the width direction above the cage 120 of the car 1 in the vertical direction.
  • a drive shaft 18 of the drive mechanism 12 is attached to a side surface portion 121b of the upper frame 121 in the front-rear direction that is orthogonal to the up-down direction and also orthogonal to the width direction.
  • a flange portion 121a is provided at the lower end of the side surface portion 121b of the upper frame 121 in the vertical direction.
  • the flange portion 121a is bent outward in the front-rear direction from the lower end of the side surface portion 121b.
  • a mounting bracket 123 is fixed to this flange portion 121a via a fixing bolt 90.
  • the mounting bracket 123 partially closes an opening at the lower end of the upper frame 121 in the vertical direction. Note that the mounting bracket 123 may completely close the opening at the lower end of the upper frame 121.
  • the above-mentioned operating mechanism 11 is placed on the upper surface of the mounting bracket 123 in the vertical direction. That is, the operating mechanism 11 and the drive mechanism 12 are housed within the space of the upper frame 121. Therefore, the upper part of the operating mechanism 11 and the driving mechanism 12 in the vertical direction is covered by the upper frame 121. Thereby, it is possible to prevent dust and rail oil from adhering to the operating mechanism 11 and the drive mechanism 12. As a result, the operation of the operating mechanism 11 and the drive mechanism 12 can be prevented from being hindered by dust or rail oil, and the reliability of the emergency stop device can be improved.
  • the operating mechanism 11 and drive mechanism 12 of the emergency stop device in the upper frame 121, it is possible to suppress the vertical frame 140 of the car 1 from increasing in size. As a result, it is possible to suppress the vertical frame 140 from increasing in size, so that the horizontal dimension of the car room 120 can be suppressed from being reduced by the vertical frame 140.
  • FIG. 4 is a sectional view showing the upper frame and operating mechanism according to the second embodiment.
  • the elevator according to the second embodiment differs from the elevator according to the first embodiment in the configuration of the upper frame. Therefore, the upper frame will be described here, and parts common to the elevator according to the first embodiment will be given the same reference numerals and redundant explanation will be omitted.
  • two upper frames 126, 126 are arranged at the top of the car in the vertical direction.
  • the upper frame 126 is formed in a substantially U-shape.
  • the two upper frames 126, 126 are arranged with side parts facing each other and spaced apart in the front-rear direction.
  • the drive shaft 18 of the drive mechanism 12 is attached to the side surface of the upper frame 126.
  • the drive shaft 18 is arranged between the two upper frames 126, 126.
  • An upper flange portion 126a is formed at the upper end of the side surface of the upper frame 126 in the vertical direction, and a lower flange portion 126b is formed at the lower end of the side surface in the vertical direction.
  • the mounting bracket 123 is fixed to the lower flange portion 126b via fixing bolts 90.
  • the mounting bracket 123 is arranged to connect the two upper frames 126, 126.
  • the operating mechanism 11 of the emergency stop device is arranged on the mounting bracket 123. Therefore, the operating mechanism 11 and the drive mechanism 12 are housed in the two upper frames 126, 126.
  • a cover bracket 221 is fixed to the upper flange portion 126a.
  • the cover bracket 221 is arranged to connect the two upper frames 126, 126, and covers the upper part of the operating mechanism 11 and the drive mechanism 12 in the vertical direction, which are arranged between the two upper frames 126, 126.
  • the cover bracket 221 and the upper frame 126 constitute an upper frame indicating a crosshead of the car.
  • the other configurations are the same as those of the elevator according to the first embodiment, so their explanation will be omitted.
  • the elevator according to the second embodiment having such an upper frame 126 also has the same structure as described above. It is possible to obtain the same effects as the elevator according to the first embodiment.
  • FIG. 5 is a sectional view showing the upper frame and operating mechanism according to the third embodiment.
  • the elevator according to the third embodiment differs from the elevator according to the first embodiment in the configuration of the upper frame and the mounting bracket. Therefore, the upper frame and the mounting bracket will be explained here, and the same reference numerals will be given to the parts common to the elevator according to the first embodiment, and redundant explanation will be omitted.
  • the upper frame 321 is formed into a hat shape, similar to the upper frame 121 according to the first embodiment.
  • a flange portion 321a is provided at the lower end of the side surface portion 321b. Note that the hole in the side surface portion 321b to which the drive shaft 18 is attached is a long hole extending in the vertical direction.
  • the mounting bracket 323 is fitted between the two side surfaces 321b, 321b of the upper frame 321, and partially blocks the opening at the lower end of the upper frame 321 in the vertical direction.
  • Fixing pieces 323a are provided at both ends of the mounting bracket 323 in the front-rear direction.
  • the fixed piece 323a is bent upward in the vertical direction from the mounting surface on which the operating mechanism 11 is mounted.
  • the fixing piece 323a faces the side surface 321b of the upper frame 321 and is fixed to the side surface 321b via the fixing bolt 90.
  • a fixing hole in the fixing piece 323a or the side surface portion 321b through which the fixing bolt 90 is inserted is a long hole extending in the vertical direction. That is, the mounting bracket 323 is arranged to be movable in the vertical direction with respect to the upper frame 321.
  • the height of the mounting position of the mounting bracket 323 can be adjusted.
  • the vertical installation positions of the drive shafts 18 of the operating mechanism 11 and the drive mechanism 12 placed on the mounting bracket 323 can be adjusted.
  • FIG. 6 is a front view showing the upper frame according to the fourth embodiment.
  • the elevator according to the fourth embodiment differs from the elevator according to the first embodiment in the configuration of the upper frame. Therefore, the upper frame will be described here, and parts common to the elevator according to the first embodiment will be given the same reference numerals and redundant explanation will be omitted.
  • an opening window 128 is formed in the side surface of the upper frame 121B.
  • the opening window 128 is formed at a position facing the operating mechanism 11 housed in the upper frame 121B.
  • This opening window 128 is covered with a cover member (not shown) so that it can be opened and closed.
  • the other configurations are the same as those of the elevator according to the first embodiment, so their explanation will be omitted.
  • the elevator according to the fourth embodiment having such an upper frame 121B also has the same structure as described above. It is possible to obtain the same effects as the elevator according to the first embodiment.
  • both ends of the upper frame in the width direction are open, but the present invention is not limited to this, and a cover may be provided to close both ends of the upper frame. Note that since dust and rail oil fall from above in the vertical direction, it is possible to prevent dust and rail oil from adhering to the operating mechanism 11 and drive mechanism 12 even without providing a cover to block both ends of the upper frame. can.
  • a housing may be provided that surrounds the operating mechanism 11 placed on the mounting bracket. Thereby, it is possible to more effectively prevent dust and rail oil from adhering to the operating mechanism 11.
  • the present invention can also be applied to a multi-car elevator in which multiple cars move up and down within a single hoistway.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)
PCT/JP2022/020459 2022-05-17 2022-05-17 エレベーター Ceased WO2023223404A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP22942609.3A EP4527776A4 (en) 2022-05-17 2022-05-17 ELEVATOR
CN202280095572.5A CN119032059A (zh) 2022-05-17 2022-05-17 电梯
JP2024521411A JP7765623B2 (ja) 2022-05-17 2022-05-17 エレベーター
PCT/JP2022/020459 WO2023223404A1 (ja) 2022-05-17 2022-05-17 エレベーター

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/020459 WO2023223404A1 (ja) 2022-05-17 2022-05-17 エレベーター

Publications (1)

Publication Number Publication Date
WO2023223404A1 true WO2023223404A1 (ja) 2023-11-23

Family

ID=88834815

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/020459 Ceased WO2023223404A1 (ja) 2022-05-17 2022-05-17 エレベーター

Country Status (4)

Country Link
EP (1) EP4527776A4 (https=)
JP (1) JP7765623B2 (https=)
CN (1) CN119032059A (https=)
WO (1) WO2023223404A1 (https=)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61157578U (https=) * 1985-03-20 1986-09-30
JP2009046274A (ja) * 2007-08-22 2009-03-05 Mitsubishi Electric Building Techno Service Co Ltd 昇降防止装置およびエレベータ装置
US20200198932A1 (en) * 2018-12-20 2020-06-25 Kone Corporation Elevator safety gear trigger and reset system
WO2021044662A1 (ja) * 2019-09-06 2021-03-11 株式会社日立製作所 非常止め装置及びエレベーター

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61157578U (https=) * 1985-03-20 1986-09-30
JP2009046274A (ja) * 2007-08-22 2009-03-05 Mitsubishi Electric Building Techno Service Co Ltd 昇降防止装置およびエレベータ装置
US20200198932A1 (en) * 2018-12-20 2020-06-25 Kone Corporation Elevator safety gear trigger and reset system
WO2021044662A1 (ja) * 2019-09-06 2021-03-11 株式会社日立製作所 非常止め装置及びエレベーター

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4527776A4 *

Also Published As

Publication number Publication date
CN119032059A (zh) 2024-11-26
JPWO2023223404A1 (https=) 2023-11-23
EP4527776A1 (en) 2025-03-26
JP7765623B2 (ja) 2025-11-06
EP4527776A4 (en) 2026-04-01

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