WO2019016913A1 - Procédé de réparation pour dispositif ascenseur hydraulique existant et dispositif ascenseur - Google Patents

Procédé de réparation pour dispositif ascenseur hydraulique existant et dispositif ascenseur Download PDF

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Publication number
WO2019016913A1
WO2019016913A1 PCT/JP2017/026249 JP2017026249W WO2019016913A1 WO 2019016913 A1 WO2019016913 A1 WO 2019016913A1 JP 2017026249 W JP2017026249 W JP 2017026249W WO 2019016913 A1 WO2019016913 A1 WO 2019016913A1
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WO
WIPO (PCT)
Prior art keywords
pair
car
meshing chains
hoistway
vertical direction
Prior art date
Application number
PCT/JP2017/026249
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English (en)
Japanese (ja)
Inventor
公丈 鵜川
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2017/026249 priority Critical patent/WO2019016913A1/fr
Publication of WO2019016913A1 publication Critical patent/WO2019016913A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/02—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable

Definitions

  • the present invention relates to a method of repairing an existing hydraulic elevator system for repairing an existing hydraulic elevator system into an elevator system of a drive system other than the hydraulic type, and an elevator system repaired by this repair method.
  • a conventional method of repairing an existing hydraulic elevator apparatus arranges in a hoistway a screw rod for removing a plunger and raising and lowering a car, and a motor capable of rotationally driving a nut portion having an internal thread portion screwed with the screw rod.
  • the car has been refurbished so as to be able to move up and down through the drive of the nut portion and the screw rod accompanying the operation of the motor (see, for example, Patent Document 1).
  • the refurbished elevator apparatus has a problem that the noise is increased because the nut portion is rotationally driven by the motor and the screw rod screwed to the nut portion is moved up and down.
  • the conventional meshing chain lifting device comprises a pair of lifting sprockets rotating in opposite directions in opposite directions in the same plane centering around a pair of rotation axes juxtaposed parallel to the installation surface, and a pair of lifting sprockets A pair of meshing chains which mesh with each other immediately after deflection drive from horizontal direction to vertical direction by lift-and-fall sprockets and rise together in a self-sustaining state, and disengage from each other at the time of deflection drive from vertical direction to horizontal direction. And a motor for driving the pair of lifting sprockets, and lifting and lowering the lifting table fixed to the upper end of the pair of meshing chains (see, for example, Patent Document 2).
  • the weight of the car in the landing state acts on the pair of elevating sprockets via the pair of meshing chains in the self-supporting state.
  • the pair of lifting sprockets rotate so as to deflect the pair of meshing chains horizontally from the vertical direction. There is a problem that the landing position can not be secured.
  • the present invention has been made to solve such problems, and a method and a method for repairing an existing hydraulic elevator system capable of repairing an elevator system with low cost and low noise which can secure a landing position of a car.
  • the purpose is to obtain a device.
  • An elevator apparatus comprises: an elevator device vertically movably disposed in a hoistway; a hydraulic cylinder extending vertically which is disposed at a lower portion of the hoistway; The plunger is accommodated in the hydraulic cylinder so as to be vertically movable, and is connected to the car, and is mutually engaged and integrally raised in a self-supporting state by deflection drive from the horizontal direction to the vertical direction.
  • a pair of meshing chains which cause the car to travel in the ascending direction and the mutual meshing is separated and branched by the deflection drive in the vertical direction from the vertical direction, and causes the car to travel in the descending direction, and the pair of meshing chains ,
  • a first braking device that brakes the movement of the plunger in the vertical direction, and a second braking that brakes the vertical movement of the pair of meshing chains in a self-supporting state It includes a location, a.
  • the present invention since a pair of meshing chains are used as a power source for raising and lowering the car, noise can be reduced. Further, since the first braking device for braking the movement of the plunger in the vertical direction and the second braking device for braking the lifting and lowering of the pair of meshing chains in the freestanding state are provided, the landing position of the car is maintained. The braking force can be reliably secured, and the landing position of the car can be secured reliably. In addition, when the existing hydraulic elevator system is repaired to the present elevator system, since the existing hydraulic cylinder and plunger can be reused, waste materials are reduced, and cost reduction and a short construction period can be achieved.
  • FIG. 3 is a cross-sectional view taken along the line III-III in FIG. It is IV-IV arrow sectional drawing of FIG. It is the top view which looked the elevator apparatus which concerns on Embodiment 2 of this invention from a perpendicular upper direction. It is a partially broken side view which shows the existing hydraulic elevator apparatus.
  • FIG. 6 is a partially cutaway side view showing an existing hydraulic elevator apparatus.
  • the existing hydraulic elevator system includes a car 2 disposed in the hoistway 1, a protective pipe 4 provided in the lower part of the hoistway 1, and a hydraulic pressure accommodated in the protective pipe 4.
  • a cylinder 5 and a plunger 6 accommodated in the hydraulic cylinder 5 and connected to the car floor 2 a of the car 2 are provided.
  • a pair of guide rails 3 is installed in the hoistway 1 so as to extend in the vertical direction.
  • a guide shoe 2 b is attached to the car 2.
  • the guide shoe 2b of the car 2 is guided by the guide rail 3 so as to be movable in the vertical direction.
  • the existing hydraulic elevator apparatus further includes a hydraulic circuit including an oil tank 7, a pump 8, a control valve 9, and a pipe 10, and a control panel 11 for controlling the drive of the pump 8.
  • the pump 8 forcibly feeds the oil 12 in the oil tank 7 into the hydraulic cylinder 5 to move the plunger 6 upward. Further, the oil 12 in the hydraulic cylinder 5 is returned to the oil tank 7 at a constant rate via the control valve 9, and the plunger 6 is moved downward. Thus, the car 2 is moved up and down.
  • FIG. 1 is a partially cutaway side view showing a state in which a car in an elevator apparatus according to Embodiment 1 of the present invention is moving near the top floor
  • FIG. 2 is an elevator apparatus according to Embodiment 1 of the present invention 3 is a cross-sectional view taken along the line III-III in FIG. 1
  • FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. It is.
  • the car is indicated by an alternate long and short dash line.
  • a car door 40 is disposed in the car 2 so as to be able to open and close a car door.
  • a hall entrance / exit constituted by a three-way frame 41 is formed on each floor.
  • a landing door 42 is disposed to be able to open and close the entrance to the landing.
  • the opening and closing direction of the car door 40 is the width direction of the hoistway 1.
  • the depth direction of the hoistway 1 is a horizontal direction orthogonal to the width direction of the hoistway 1.
  • the pair of guide rails 3 is disposed substantially at the center of the car 2 in the depth direction of the hoistway 1. Further, the pair of guide rails 3 is disposed opposite to each other across the car 2 in the width direction of the hoistway 1. Furthermore, the pair of guide rails 3 is installed in the hoistway 1 so as to extend in the vertical direction.
  • a guide shoe 2 b is attached to the car 2. The car 2 is movable in the vertical direction by the guide shoes 2 b being guided by the guide rails 3.
  • the protective pipe 4 is disposed at a substantially central position of the car 2 in the depth direction of the hoistway 1 and at a substantially central position of the car 2 in the width direction of the hoistway 1.
  • the protective pipe 4 is embedded in the ground below the pit 1 a of the hoistway 1 so as to extend vertically.
  • the hydraulic cylinder 5 is housed in the protective pipe 4.
  • a plunger 6 is accommodated in the hydraulic cylinder 5 movably in the vertical direction. The upper end of the plunger 6 is connected to the car floor 2 a of the car 2.
  • a first electromagnetic brake 13 as a first braking device is attached to the upper end of the hydraulic cylinder 5.
  • the first electromagnetic brake 13 has a pair of movable iron cores 14 movable in a direction toward and away from the plunger 6 and a pair attached to the end of each of the pair of movable iron cores 14 on the plunger 6 side.
  • Brake shoe 15 and a pair of springs 16 urging each of the pair of brake shoes 15 against the plunger 6, and the plunger 6 against the urging force of the spring 16 when energized.
  • an excitation coil 17 for generating a magnetic attraction force to be separated from the space.
  • the pair of movable iron cores 14 are disposed opposite to each other across the plunger 6 in the width direction of the hoistway 1.
  • the guide portion 32 includes a toothed portion 32a, and a pair of branch portions 32b bifurcated from the toothed portion 32a.
  • the guide portion 32 is installed in the pit 1 a of the hoistway 1 with the toothed portion 32 a facing upward.
  • a pair of branching parts 32b serves as a curve shape displaced so that it may estrange in the width direction of hoistway 1 as it goes to the perpendicular lower part.
  • the pair of meshing chains 20 are engaged with each other by coming into the toothed portion 32a from the pair of branch portions 32b and are integrated with each other, and are raised in the vertical direction in a self-supporting state by advancing the toothed portion 32a.
  • the pair of meshing chains 20 disengage from each other, branch and move in the horizontal direction.
  • the upper ends of the pair of meshing chains 20 in the freestanding state are connected to the car floor 2 a of the car 2 at a position closer to the car door 40 than the plunger 6 in the depth direction of the hoistway 1.
  • a driving device 23 for driving the pair of meshing chains 20 is installed in the pit 1 a of the hoistway 1.
  • a second electromagnetic brake 24 as a second braking device is installed in the pit 1a so as to be able to brake the vertical movement of the pair of meshing chains 20 in a self-supporting state by meshing with each other.
  • the pair of meshing chains 20 are configured by connecting the elements 21 at regular intervals.
  • the pair of meshing chains 20 is guided by the pair of curved bifurcated portions 32b, and is guided to the toothed portion 32a in a state in which the head side of the element 21 is opened.
  • the head of the element 21 of one meshing chain 20 is inserted between the heads of the open-ended elements 21 of the other meshing chain 20.
  • the heads of the elements 21 of the pair of meshing chains 20 mesh alternately.
  • the head portions of the elements 21 are closed, the heads of the elements 21 mesh with each other, and the pair of meshing chains 20 are firmly connected.
  • a pair of cylindrical chain storage sections 30 are fixed to the wall surface of the hoistway 1 via the fixtures 31 respectively.
  • the pair of chain storage portions 30 are disposed apart from each other across the guide portion 32 in the width direction of the hoistway 1.
  • the pair of chain storage portions 30 extend in parallel, in the vertical direction, in parallel.
  • the pair of meshing chains 20 project upward in the vertical direction through the toothed portion 32a in a state in which one end side is firmly connected.
  • the pair of meshing chains 20 is branched in the width direction of the hoistway 1 from the toothed portion 32 a through the pair of branch portions 32 b.
  • the other end side of each of the branched pair of meshing chains 20 is stored in each of the pair of chain storage portions 30 from the lower end side.
  • the drive device 23 includes a pair of lifting sprockets and a motor for driving the pair of lifting sprockets.
  • the pair of lifting sprockets are arranged opposite to each other and configured to rotate in the opposite direction.
  • the pair of lifting sprockets respectively mesh with each of the pair of meshing chains to feed the pair of meshing chains 20 from the pair of chain storage portions 30 and feed them to the meshing portion 32a through the pair of branch portions 32b.
  • the pair of meshing chains 20 are driven to be fed from the toothed portion 32a to the pair of storage portions through the pair of branch portions 32b. That is, the drive device 23 drives the motor in forward and reverse directions to deflect and drive the pair of meshing chains 20 from the horizontal direction to the vertical direction or from the vertical direction to the horizontal direction.
  • the control panel 11 controls the drive of the motor of the drive device 23. Further, the control board 11 controls the energization of the exciting coils 17 and 25 of the first electromagnetic brake 13 and the second electromagnetic brake 24. That is, when the car 2 travels, the exciting coils 25 and 17 are energized, and when the car 2 lands, the energization of the exciting coils 25 and 17 is stopped.
  • the pair of meshing chains 20 are fed out from the chain storage unit 30 by the pair of lifting sprockets, and are deflected and driven from the horizontal direction to the vertical direction by the guide portion 32.
  • the heads of the elements 21 of the pair of meshing chains 20 mesh in order, and the pair of meshing chains 20 are integrally supported.
  • a pair of meshing chains 20 which became a self-supporting state rise in the perpendicular direction. As a result, the car 2 travels in the upward direction.
  • the pair of meshing chains 20 are deflected and driven in the horizontal direction from the vertical direction at the branch point of the guide portion 32.
  • the engagement between the heads of the elements 21 of the pair of meshing chains 20 is released in order, and the pair of meshing chains 20 is branched.
  • Each of the branched pair of meshing chains 20 is stored in each of the pair of chain storage portions 30 through the branch portion 32 b of the guide portion 32. Then, the car 2 travels in the descending direction.
  • the pair of brake shoes 26 separate from the pair of meshing chains 20, and the second electromagnetic brake 24 is in the non-braking state.
  • the pair of brake shoes 26 sandwiches the pair of meshing chains 20 by the biasing force of the spring 27, and the second electromagnetic brake 24 enters a braking state. As a result, the vertical movement of the pair of meshing chains 20 in the freestanding state is prevented.
  • the brake shoe 15 when the exciting coil 17 is energized, the brake shoe 15 is separated from the plunger 6 and is in the non-braking state. Further, in the first electromagnetic brake 13, when the energization of the exciting coil 17 is stopped, the pair of brake shoes 15 sandwich the plunger 6 by the biasing force of the spring 16 to be in the braking state. Thereby, the vertical movement of the plunger 6 is blocked.
  • the first electromagnetic brake 13 braking the movement of the plunger 6 in the vertical direction and the second electromagnetic brake 24 braking the vertical movement of the pair of meshing chains 20 in the self-supporting state are provided. .
  • the braking force for maintaining the landing position of the car 2 can be reliably ensured, and the car 2 in the landing state can be prevented from falling by its own weight.
  • a pair of meshing chains 20 are used as a power source for moving the car 2 up and down, noise reduction and speeding up / down can be achieved compared to the case where a screw rod and a nut portion are used as power sources. .
  • the first electromagnetic brake 13 and the second electromagnetic brake 24 are configured to perform a braking operation by the biasing force of the springs 16 and 27 when not energized. Thereby, even when the operation of the drive device 23 is stopped due to a power failure or the like, the lowering of the car 2 is reliably prevented.
  • a pair of chain storage portions 30 are disposed so as to extend in the up-down direction relative to the branching direction of the pair of meshing chains 20 with the pair of meshing chains 20 in the freestanding state interposed therebetween.
  • the branched pair of meshing chains 20 are respectively inserted into the pair of chain storage portions 30 from the lower end side, and are stored in the pair of chain storage portions 30.
  • the car 2 is placed on the top floor, and the car 2 is fixed using a chain block or the like. Then, the oil 12 is removed, and the oil tank 7, the pump 8, the control valve 9 and the like are removed.
  • each of the pair of meshing chains 20 is inserted into each of the branch portions 32 b of the guide portion 32.
  • the pair of lifting and lowering sprockets of the drive device 23 are engaged with each of the pair of meshing chains 20 inserted into the branch portion 32b.
  • the pair of elevating sprockets are rotated to feed the pair of meshing chains 20 to the meshing portion 32a, and mesh the pair of meshing chains 20 with each other.
  • the pair of meshing chains 20, the guide portion 32, and the drive device 23 are assembled integrally.
  • the pair of chain storage portions 30 is attached to the wall surface of the hoistway 1 using the attachment 31.
  • the assembly of the pair of meshing chains 20, the guide portion 32, and the drive device 23 is carried into the pit 1a and installed.
  • the other ends of the pair of meshing chains 20 are inserted into the pair of chain storage portions 30 from the lower end side.
  • the drive device 23 is driven to feed the pair of meshing chains 20 into the meshing portion 32a, and lift the pair of meshing chains 20 which are mutually meshed and in a self-supporting state.
  • the tips of the pair of meshing chains 20 in the freestanding state are fixed to the car floor 2 a of the car 2.
  • the first electromagnetic brake 13 is attached to the upper part of the hydraulic cylinder 5, and the second electromagnetic brake 24 is attached to the upper part of the driving device 23.
  • the car 2 is unlocked by a chain block or the like.
  • the existing hydraulic elevator system is refurbished to an elevator system having the pair of meshing chains 20 as a driving source.
  • the existing hydraulic cylinder 5 and the plunger 6 are reused, the amount of waste material is reduced, and the existing hydraulic elevator apparatus can be repaired at low cost and in a short construction period.
  • the double braking mechanism is realized by using the first electromagnetic brake 13 and the second electromagnetic brake 24, the braking force for maintaining the landing position of the car 2 can be reliably ensured. Thereby, the descent of the car 2 which is a heavy load in the landing state can be reliably prevented.
  • the first electromagnetic brake 13 is configured to brake the movement of the existing plunger 6 in the vertical direction, the dual braking mechanism can be easily realized, and cost reduction and a short construction period can be achieved.
  • FIG. 5 is a plan view of an elevator apparatus according to Embodiment 2 of the present invention as viewed vertically from above.
  • the car is indicated by a two-dot chain line.
  • two pairs of meshing chains 20 are disposed opposite to each other in the depth direction of the hoistway 1 with the plunger 6 interposed therebetween.
  • Each pair of two pairs of meshing chains 20 is attached to the guide portion 32 and branched in the width direction of the hoistway 1.
  • a driving device 23 is disposed in the pit 1a so as to be able to deflect and drive each of the two pairs of meshing chains 20.
  • a chain storage portion 30 is disposed in the hoistway 1 so as to be able to store the other end sides of the two pairs of meshing chains 20.
  • a second electromagnetic brake 24 is mounted on the top of each drive 23. The other configuration is the same as that of the first embodiment.
  • the two pairs of meshing chains 20 are used as power sources for raising and lowering the car 2, an elevator apparatus with high lift and high load can be realized.
  • the protective pipe and the hydraulic cylinder are embedded in the lower part of the pit.
  • the protective pipe and the hydraulic cylinder may be provided on the bottom of the pit. That is, the protective pipe and the hydraulic cylinder are disposed at the lower part of the hoistway regardless of inside and outside of the hoistway.
  • an indirect hydraulic elevator may be modified to indirectly transfer the hydraulic power to the car.
  • the electromagnetic brake is used as the first braking device.
  • the first braking device is not limited to the electromagnetic brake and may be any mechanism capable of preventing the movement of the plunger in the vertical direction.
  • the electromagnetic brake is used as the second braking device, the second braking device is not limited to the electromagnetic brake, and a mechanism capable of preventing the ascent and descent of a pair of meshing chains in a self-supporting state Any mechanism can be used as long as it can prevent the rotation of the lifting sprockets of the device.
  • Reference Signs List 1 hoistway, 2 car, 4 protective pipe, 5 hydraulic cylinder, 6 plunger, 13 first electric brake (first braking device), 20 meshing chain, 23 drive device, 24 second electric brake (second braking device) , 30 chain storage.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Structural Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

Un dispositif ascenseur selon la présente invention comprend : une cabine qui est disposée de façon pouvoir être élevée et abaissée dans une cage d'ascenseur ; un cylindre hydraulique qui est disposé dans une partie inférieure de la cage d'ascenseur et qui s'étend dans la direction verticale ; un piston qui est logé dans le cylindre hydraulique de façon à être mobile verticalement en association avec le mouvement d'élévation ou d'abaissement de la cabine ; une paire de chaînes d'engagement qui sont reliées à la cabine, qui, lorsqu'elles sont entraînées de manière sollicitée de la direction horizontale à la direction verticale, s'engagent l'une avec l'autre et s'élèvent d'un seul tenant de façon indépendante de façon à provoquer le déplacement vers le haut de la cabine et qui, lorsqu'elles sont entraînées de manière sollicitée de la direction verticale vers la direction horizontale, se dégagent l'une de l'autre et divergent de façon à provoquer le déplacement vers le bas de la cabine ; un dispositif d'entraînement qui entraîne les chaînes d'engagement de manière sollicitée ; un premier dispositif de frein qui freine le mouvement vertical du piston ; et un deuxième dispositif de frein qui freine l'élévation et l'abaissement indépendants des chaînes d'engagement.
PCT/JP2017/026249 2017-07-20 2017-07-20 Procédé de réparation pour dispositif ascenseur hydraulique existant et dispositif ascenseur WO2019016913A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090026018A1 (en) * 2007-07-26 2009-01-29 Production Resource Group L.L.C Self Erecting Zipper Lift
JP2010001129A (ja) * 2008-06-20 2010-01-07 Tsubakimoto Chain Co 噛合チェーン式昇降装置
JP2013139304A (ja) * 2011-12-28 2013-07-18 Mitsubishi Electric Building Techno Service Co Ltd 油圧式エレベータ
JP2016147741A (ja) * 2015-02-12 2016-08-18 三菱電機株式会社 エレベータの改修方法および改修されたロープ式エレベータ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090026018A1 (en) * 2007-07-26 2009-01-29 Production Resource Group L.L.C Self Erecting Zipper Lift
JP2010001129A (ja) * 2008-06-20 2010-01-07 Tsubakimoto Chain Co 噛合チェーン式昇降装置
JP2013139304A (ja) * 2011-12-28 2013-07-18 Mitsubishi Electric Building Techno Service Co Ltd 油圧式エレベータ
JP2016147741A (ja) * 2015-02-12 2016-08-18 三菱電機株式会社 エレベータの改修方法および改修されたロープ式エレベータ

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