WO2020044488A1

WO2020044488A1 - Elevator apparatus and method for repairing elevator apparatus

Info

Publication number: WO2020044488A1
Application number: PCT/JP2018/032110
Authority: WO
Inventors: 公丈鵜川
Original assignee: 三菱電機株式会社
Priority date: 2018-08-30
Filing date: 2018-08-30
Publication date: 2020-03-05

Abstract

An elevator apparatus according to the present invention is provided with: a pair of engagement chains that are connected to a car and that move the car in the raising and lowering direction by being driven such that the orientation of the chains is changed from the horizontal direction to the vertical direction or from the vertical direction to the horizontal direction; a drive device that drives the pair of engagement chains; a guide device having a guide member that is attached, in a raisable and lowerable manner, to the pair of engagement chains in a self-supporting state and is cylindrically formed so as to partially encircle the pair of engagement chains and having a support member that is attached to a pair of guide rails in a raisable and lowerable manner so as to support the guide member; and a guide device operation member that, when the car is raised and lowered at a position higher than a predetermined height, raises and lowers the guide device in association with the raising and lowering of the pair of engagement chains, and that, when the car is raised and lowered at a position lower than or equal to the default height, holds the guide device at a retracted position not interfering with the car being raised and lowered.

Description

Elevator device and repair method of elevator device

The present invention relates to an elevator apparatus using a meshing chain as a power source and a method for repairing the elevator apparatus.

A conventional method of repairing an existing hydraulic elevator device is to remove a plunger and raise and lower a car by using a screw rod, and a motor capable of rotating a nut having a female screw part fitted to the screw rod on a hoistway. The car is arranged and modified so that the car can be moved up and down through driving of a nut portion and a screw rod accompanying the operation of the motor (for example, see Patent Document 1).

JP-A-2005-129042

However, the modified elevator device has a problem that noise is increased because the nut portion is driven to rotate by the motor and the screw bar attached to the nut portion is moved up and down.

The present invention has been made to solve such a problem, and an object of the present invention is to provide an elevator apparatus and a method of repairing the elevator apparatus that can reduce noise.

The elevator device according to the present invention is a car that is installed in the hoistway so as to be able to move up and down, and is installed in the hoistway so as to extend in the up and down direction with the car interposed therebetween, and lifts and lowers the car. The pair of guide rails to be guided and the car are connected to each other and driven to change the direction from the horizontal direction to the vertical direction. And a pair of meshing chains for disengaging and branching from each other to move the car in the descending direction by being driven while changing the direction from the vertical direction to the horizontal direction, and the pair of A driving device for driving the meshing chain; and a tubular-shaped gear mounted to the pair of meshing chains in a self-standing state so as to be able to move up and down and partially surround the pair of meshing chains. And a guide device which is mounted on the pair of guide rails so as to be able to move up and down, and has a support member for supporting the guide member, and when the car is raised and lowered at a position higher than a predetermined height, the guide device is A guide device that moves up and down in conjunction with the raising and lowering of the pair of meshing chains, and holds the guide device at a retracted position that does not interfere with the car that moves up and down when the car moves up and down at a position equal to or less than the predetermined height. An operating member.

According to the present invention, since a pair of meshing chains is used as a power source for raising and lowering the car, noise can be reduced.

It is a partially broken side view showing the elevator apparatus according to Embodiment 1 of the present invention. It is a partially broken side view which shows the elevator apparatus which concerns on Embodiment 2 of this invention. It is a partially broken side view showing an elevator apparatus according to Embodiment 3 of the present invention. It is a partially broken side view which shows the existing hydraulic elevator apparatus.

Embodiment 1 FIG.
FIG. 1 is a partially cutaway side view showing an elevator apparatus according to Embodiment 1 of the present invention.

In FIG. 1, the pair of

guide rails

3, 3 are installed in the hoistway 1 so as to extend vertically with the car 2 interposed therebetween. A guide shoe 2b is attached to the car 2. The car 2 is installed so that the guide shoe 2b is guided by the pair of

guide rails

3 and 3 so as to be able to move up and down in the hoistway 1.

The guide portion 24 includes a meshing portion 24a, and a pair of branch portions 24b branched from the meshing portion 24a into two branches. The guide portion 24 is installed in the pit 1a of the hoistway 1 so that the engagement portion 24a faces upward and the engagement portion 24a is located immediately below the center of gravity of the car 2. The pair of branch portions 24b have a curved shape that is displaced in the horizontal direction as it goes vertically downward.

The pair of

meshing chains

20, 20 is what is called a chuck chain, and is configured by connecting the elements 21 at regular intervals. The pair of

meshing chains

20, 20 are guided by the pair of curved branch portions 24b, and are guided to the meshing portion 24a with the head side of the element 21 opened. Then, the head of the element 21 of one meshing chain 20 is inserted between the heads of the opened elements 21 of the other meshing chain 20. In this way, the heads of the elements 21 of the pair of

meshing chains

20, 20 are alternately meshed. In the process in which the pair of

meshing chains

20, 20 advance in the meshing portion 24a, the heads of the elements 21 are closed, and the heads of the elements 21 mesh with each other, so that the pair of

meshing chains

20, 20 are firmly connected. Is done.

The pair of

meshing chains

20, 20 move from the pair of branching portions 24b to the meshing portion 24a, mesh with each other, become an independent self-standing state, and move vertically upward. In addition, the pair of

meshing chains

20, 20 move from the meshing portion 24a to the pair of branching portions 24b, disengage from each other, branch and move in the horizontal direction. The upper ends of the pair of self-standing meshing chains 20 are connected to the car floor 2 a of the car 2. A driving device 23 for driving the pair of

meshing chains

20, 20 is installed in the pit 1a of the hoistway 1.

Although not shown, the driving device 23 includes a pair of elevating sprockets and a motor for driving the pair of elevating sprockets. The pair of elevating sprockets are arranged to face each other and are configured to rotate in opposite directions. The pair of elevating sprockets mesh with the pair of

meshing chains

20, 20, respectively. The pair of elevating sprockets are driven by a motor to send the pair of

meshing chains

20, 20 to the meshing portion 24a through the pair of branching portions 24b, and to move the pair of

meshing chains

20, 20 from the meshing portion 24a to the pair of branching portions. 24b. That is, the driving device 23 drives the motor in the forward and reverse directions to drive the pair of

meshing chains

20 and 20 to change their directions from the horizontal direction to the vertical direction or from the vertical direction to the horizontal direction.

The guide member 31 is formed in a tubular shape that surrounds a plurality of meshing portions between the elements 21 of the pair of self-standing meshing chains 20 with a slight gap. One end of each of the pair of

linear support members

32, 32 is mounted on the pair of

guide rails

3, 3 so as to be vertically movable. The guide member 31 is supported by the other ends of the pair of

support members

32, 32 in a state where the guide member 31 is attached so as to surround the pair of self-standing

meshing chains

20, 20. An electromagnet device 33 is attached to one of the pair of support members 32. The magnetic plate 34 is mounted at an intermediate position in the vertical direction between the pair of self-standing

meshing chains

20, 20 when the car 2 arrives on the top floor. The electromagnet device 33 is energized via the wiring 35 and magnetically attracts the magnetic plate 34, whereby the guide device 30 and the pair of

meshing chains

20, 20 are connected. When the energization of the electromagnet device 33 via the wiring 35 is stopped, the connection between the guide device 30 and the pair of

meshing chains

20, 20 is released. Here, the guide device 30 is composed of the guide member 31, the pair of

support members

32, 32, and the like. Further, a guide device operating member includes the electromagnet device 33, the magnetic plate 34, the wiring 35, and a ceiling 23a described later.

The protection tube 4 is embedded in the lower part of the hoistway 1. The control panel 11 is installed outside the hoistway 1. The control panel 11 controls the driving of the motor of the driving device 23 and controls the energization of the electromagnet device 33 via the wiring 35. Although not shown, a pair of chain storage units is installed in the pit 1 a of the hoistway 1. Then, each of the pair of

branched engagement chains

20, 20 is stored in a pair of chain storage portions.

In the elevator device configured as described above, when the motor of the driving device 23 is driven to rotate in the forward direction, the pair of

meshing chains

20, 20 are fed out of the pair of chain housings by the pair of lifting sprockets. Then, the pair of

meshing chains

20, 20 extended from the pair of chain storage portions are driven by the guide portion 24 so as to change the direction from the horizontal direction to the vertical direction. As a result, the heads of the elements 21 of the pair of

meshing chains

20 and 20 are sequentially meshed with each other, and the pair of

meshing chains

20 and 20 are integrally self-standing. Then, the pair of interlocking

chains

20, 20, which are in a self-standing state, rises in the vertical direction. Thereby, the car 2 moves in the ascending direction. Then, when the magnetic plate 34 of the pair of

meshing chains

20, 20 projects upward from the guide portion 24, the electromagnet device 33 is energized via the wiring 35. Thereby, the magnetic plate 34 is magnetically attracted to the electromagnet device 33. As a result, the guide device 30 is connected to the pair of

engagement chains

20, 20. The guide device 30 moves in the ascending direction in conjunction with the movement of the pair of

meshing chains

20, 20 in the ascending direction.

When the motor of the driving device 23 is driven to rotate in the opposite direction, the pair of meshing chains 20 are driven so that the direction changes from the vertical direction to the horizontal direction at the branch point of the guide portion 24. Thereby, the engagement between the heads of the elements 21 of the pair of meshing

chains

20, 20 is sequentially released, and the pair of meshing

chains

20, 20 is branched. Each of the pair of branched

engagement chains

20, 20 passes through the branch portion 24b of the guide portion 24 and is stored in each of the pair of chain storage portions. Then, the car 2 moves in the descending direction. At this time, the guide device 30 moves in the downward direction in conjunction with the downward movement of the pair of meshing

chains

20, 20. Then, when the magnetic plate 34 of the pair of meshing

chains

20, 20 reaches near the upper portion of the guide portion 24, the power supply to the electromagnet device 33 via the wiring 35 is stopped. Thereby, the magnetic attraction of the magnetic plate 34 by the electromagnet device 33 is released. Then, the connection between the guide device 30 and the pair of meshing

chains

20, 20 is released, and the guide device 30 is held on the ceiling 23 a of the drive device 23. Thereafter, only the pair of meshing

chains

20, 20 move in the descending direction. Here, the ceiling 23 a of the driving device 23 serves as a holding member that holds the guide device 30 at a retracted position that does not interfere with the car 2.

Here, when the guide device 30 is connected to the pair of meshing

chains

20, 20, the car 2 is connected to the self-standing pair of meshing

chains

20, 20 when the car 2 is on the top floor. It is located at half height in the vertical direction. In the first embodiment, the half height in the vertical direction of the pair of self-standing

meshing chains

20, 20 when the car 2 is landing on the top floor is the predetermined height.

According to the first embodiment, the pair of meshing

chains

20, 20 are used as a power source for moving the car 2 up and down. Noise can be reduced, and the ascending and descending speed can be increased.

The guide device 30 is supported by the pair of

support members

32 and 32 mounted on the pair of

guide rails

3 and 3 so as to be able to move up and down, and can be moved up and down by the pair of meshing

chains

20 and 20. And a cylindrical guide member 31 mounted on the first guide member. The guide device operating member includes a magnetic plate 34 attached to the pair of meshing

chains

20, 20, and an electromagnet device 33 that is energized and magnetically attracts the magnetic plate 34. Then, when the car 2 is moving up and down at a position higher than the predetermined height, the power supply to the electromagnet device 33 is controlled so that the electromagnet device 33 magnetically attracts the magnetic plate 34. Thus, when the car 2 moves up and down at a position higher than the predetermined height, the guide device 30 moves up and down in conjunction with the up and down movement of the pair of meshing

chains

20 and 20. As a result, the horizontal displacement of the pair of self-standing

meshing chains

20, 20 is regulated by the guide member 31, and the occurrence of bending of the pair of meshing

chains

20, 20 is suppressed. Therefore, the present elevator apparatus can be applied to high head and high load applications.

When the car 2 moves up and down at a position lower than the predetermined height, the guide device 30 is held by the ceiling 23a of the drive device 23 installed in the pit 1a. Therefore, the car 2 can move up and down without being interfered by the guide device 30.

In the first embodiment, one guide device 30 is provided, but a plurality of guide devices 30 may be provided. For example, when the car 2 is landing on the top floor, the magnetic plate 34 is attached at three positions where the pair of self-standing

meshing chains

20, 20 are divided into four, and the three guide devices 30 are attached. You. In this case, the three heights at which the pair of self-supporting

meshing chains

20, 20 are divided into four when the car 2 is landing on the top floor are the first to third predetermined heights. Then, the control panel 11 controls energization via the wiring 35 so that one guide device 30 magnetically attracts the corresponding one magnetic plate 34 at a position higher than the first predetermined height. Further, the control panel 11 controls energization via the wiring 35 so that the other one guide device 30 magnetically attracts the corresponding one magnetic plate 34 at a position higher than the second predetermined height. Further, the control panel 11 controls energization via the wiring 35 so that the remaining one guide device 30 magnetically attracts the corresponding one magnetic plate 34 at a position higher than the third predetermined height. Thereby, the horizontal displacement at three places of the pair of self-standing

meshing chains

20, 20 is regulated by the guide device 30, respectively. As a result, the present elevator apparatus can be applied to higher head and higher load applications.

ガイド The guide member 31 is vertically movable between the pair of meshing

chains

20, 20. Therefore, by applying a lubricant to the inner peripheral surface of the guide member 31, installing a sliding shoe, installing a bearing, or the like, the contact resistance of the contact portion of the guide member 31 with the pair of meshing

chains

20, 20 is reduced. It is desirable. Thus, when the car 2 moves up and down at a position lower than the predetermined height, the guide member 31 is caught by the pair of meshing

chains

20 and 20 and moves up and down together with the pair of meshing

chains

20 and 20. Is suppressed.

方法 Next, a method of modifying an existing hydraulic elevator apparatus to the present elevator apparatus will be described.

As shown in FIG. 4, the existing hydraulic elevator apparatus has a car 2 disposed in a hoistway 1, a protection tube 4 embedded in a lower portion of the hoistway 1, and a housing 2. The vehicle includes a hydraulic cylinder 5 and a plunger 6 housed in the hydraulic cylinder 5 and connected to the car floor 2a of the car 2.

In the hoistway 1, a pair of

guide rails

3, 3 are installed so as to extend in the vertical direction relative to each other across the car 2. A guide shoe 2b is attached to the car 2. In the car 2, the guide shoe 2b is guided by the pair of guide rails 3 so that the car 2 can move 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, a pipe 10, and the like, and a control panel 11 for controlling driving of the pump 8.

In the existing hydraulic elevator apparatus configured as above, the oil 12 in the oil tank 7 is forcibly fed into the hydraulic cylinder 5 by the pump 8 to move the plunger 6 upward. Further, the oil 12 in the hydraulic cylinder 5 is returned to the oil tank 7 at a fixed rate via the control valve 9, and the plunger 6 is moved downward. Thereby, the car 2 is raised and lowered. The plunger 6 moves up and down in conjunction with the elevating operation of the car 2.

改 In order to repair the existing hydraulic elevator system, first, the car 2 is landed on the top floor, and the car 2 is fixed using a chain block or the like. Next, the oil 12 is extracted, and the hydraulic cylinder 5, the plunger 6, the oil tank 7, the pump 8, the control valve 9, and the like are removed.

Next, a pair of meshing

chains

20, 20 to which the magnetic plate 34 is attached are prepared. Then, one end of each of the pair of meshing

chains

20, 20 is inserted into each of the branch portions 24 b of the guide portion 24. Next, the pair of elevating sprockets of the driving device 23 are meshed with the pair of meshing

chains

20, 20 inserted into the branch portion 24b. Then, the pair of elevating sprockets are rotated to send the pair of meshing chains 20 to the meshing portion 24a, and the pair of meshing

chains

20, 20 mesh with each other. As a result, the pair of meshing

chains

20, 20, the guide portion 24, and the driving device 23 are integrally assembled.

Next, a pair of chain storage sections is attached to the wall surface of the pit 1a. Next, the assembly of the pair of meshing

chains

20, 20, the guide portion 24, and the driving device 23 is carried into the pit 1a and installed therein. Next, the other end side of each of the pair of meshing

chains

20, 20 is inserted into the pair of chain storage portions from the lower end side. Next, the driving device 23 is driven to send the pair of meshing

chains

20, 20 to the meshing portion 24a, and the pair of meshing

chains

20, 20 which are meshed with each other and are in a self-standing state are raised. Next, the pair of meshing

chains

20, 20 are passed through the guide member 31, and the pair of

support members

32, 32 are attached to the pair of

guide rails

3, 3. Further, the electromagnet device 33 is attached to one of the pair of

support members

32,32. Then, the pair of self-standing

meshing chains

20, 20 is raised, and the ends thereof are fixed to the car floor 2a of the car 2. Next, the fixing of the car 2 by the chain block or the like is released. As a result, the existing hydraulic elevator apparatus is modified into an elevator apparatus using the pair of meshing

chains

20, 20 as a drive source.

As described above, according to this repair method, there is no need to dispose of the existing protection tube 4, so that the amount of waste material is reduced, and the existing hydraulic elevator device can be repaired at low cost and in a short construction period.
Further, as in Patent Literature 1, it is necessary to replace the existing plunger of the hydraulic elevator apparatus with a threaded rod threaded over the entire length, so that cost reduction is achieved.

In addition, when retrofitting an existing hydraulic elevator system to an elevator system that uses a hoist as a power source, the size of the car 2 is required to secure the installation space for counterweights, return cars, and mounting beams. Is reduced. In this repair method, the pair of meshing

chains

20, 20 is used as a power source for moving the car 2 up and down. Therefore, since there is no need to install a counterweight, a return wheel, a mounting beam, and the like, the size of the car 2 does not need to be reduced, and the cost can be reduced.

荷重 In hydraulic elevators, no load is applied to the building. When retrofitting an existing hydraulic elevator apparatus to an elevator apparatus using a hoist as a power source, it is necessary to install a return car in a building, and a large load is applied to the building. Therefore, it may not be possible to renovate due to the strength of the building. In this repair method, the pair of meshing

chains

20, 20 is used as a power source for moving the car 2 up and down. Therefore, since there is no need to install a counterweight, a return wheel, a mounting beam, and the like, the existing hydraulic elevator apparatus can be modified into the present elevator apparatus regardless of the strength of the existing building.

Embodiment 2 FIG.
FIG. 2 is a partially cutaway side view showing an elevator apparatus according to Embodiment 2 of the present invention.

In FIG. 2, a pair of suspension ropes 40 are suspended at one end to the car floor 2 a, respectively, and the other end is fixed to each of the pair of support members 32. The pair of

suspension ropes

40, 40 are formed to have a half length of the vertical direction of the pair of self-supporting

interlocking chains

20, 20 when the car 2 reaches the top floor. The half height in the up-down direction of the pair of self-standing

meshing chains

20, 20 when the car 2 arrives on the top floor is the predetermined height. The pair of

suspension ropes

40, 40 constitute a guide device operating member.
The other configuration is the same as that of the first embodiment.

In the elevator apparatus according to the second embodiment, when the motor of the driving device 23 is driven to rotate in the forward direction, the pair of meshing

chains

20, 20 become self-supporting and rise in the vertical direction. Thereby, the car 2 moves in the ascending direction. During the movement of the car 2 in the ascending direction to the position of the predetermined height, the hanging portion of the pair of

suspension ropes

40, 40 descending below the guide device 30 moves in the ascending direction. The guide device 30 is held on the ceiling 23a of the driving device 23. When the car 2 reaches the position at the predetermined height, the pair of

suspension ropes

40, 40 is in a state of being completely extended straight. Thus, when the car 2 moves in the ascending direction past the position of the predetermined height, the guide device 30 moves in the ascending direction in conjunction with the ascending movement of the pair of meshing

chains

20, 20.

(4) When the motor of the driving device 23 is driven to rotate in the reverse direction, the pair of self-standing

meshing chains

20, 20 descends in the vertical direction. Thereby, the car 2 moves in the descending direction. While the car 2 is moving to the predetermined height in the descending direction, the pair of

suspension ropes

40, 40 are in a state of being completely extended. Accordingly, the guide device 30 moves in the downward direction in conjunction with the downward movement of the pair of meshing

chains

20, 20. When the car 2 reaches the position at the predetermined height, the guide device 30 is placed on the ceiling 23 a of the drive device 23. Furthermore, during the downward movement of the car 2 at a position equal to or lower than the predetermined height, the pair of

suspension ropes

40, 40 hang down below the guide device 30, and the guide device 30 It is held on the ceiling 23a.

Also in the second embodiment, the existing hydraulic elevator device can be modified to the present elevator device in the same manner as in the first embodiment.

Therefore, also in the second embodiment, the same effect as in the first embodiment can be obtained.
Further, in the second embodiment, since the guide device operating member is constituted by the pair of hanging

ropes

40, 40, compared to the first embodiment in which the guide device operating member is constituted by the electromagnet device 33 and the magnetic plate 34. Cost can be reduced.

In the second embodiment, the plurality of guide devices 30 are attached to the pair of meshing

chains

20, 20, and each pair of the plurality of pairs of hanging ropes 40, having different lengths, suspended from the car floor 2 a, It may be connected to each of the plurality of guide devices 30. Thereby, the displacement in the horizontal direction at a plurality of locations of the pair of self-supporting

engagement chains

Embodiment 3 FIG.
FIG. 3 is a partially cutaway side view showing an elevator apparatus according to Embodiment 3 of the present invention.

In FIG. 3, a pair of suspension springs 42, 42 has one end fixed to the car floor 2 a and hung down, and the other end fixed to each of the pair of

support members

32, 32. The length of the pair of suspension springs 42, 42 when the pair of

support members

32, 32 is suspended, is equal to or lower than the pair of self-supporting

meshing chains

20, 20, when the car 2 is placed on the top floor. It is formed in half the length in the direction. The half height in the up-down direction of the pair of self-standing

meshing chains

20, 20 when the car 2 arrives on the top floor is the predetermined height. The pair of suspension springs 42 constitute a guide device operating member.
The other configuration is the same as that of the first embodiment.

In the elevator apparatus according to the third embodiment, when the motor of the driving device 23 is driven to rotate in the forward direction, the pair of meshing

chains

20, 20 become self-standing and rise in the vertical direction. Thereby, the car 2 moves in the ascending direction. During the movement of the car 2 in the ascending direction to the position of the predetermined height, the pair of suspension springs 42 extend in conjunction with the movement of the car 2 in the ascending direction. The guide device 30 is held on the ceiling 23a of the driving device 23. When the car 2 reaches the position at the predetermined height, the guide device 30 is held by the pair of suspension springs 42,42. Then, when the car 2 moves in the ascending direction past the position of the predetermined height, the length of the pair of suspension springs 42 is kept constant. Accordingly, the guide device 30 moves in the ascending direction in conjunction with the movement of the pair of meshing

chains

20, 20 in the ascending direction.

meshing chains

20, 20 descends in the vertical direction. Thereby, the car 2 moves in the descending direction. At this time, the length of the pair of suspension springs 42 is kept constant during the downward movement of the car 2 to the position of the predetermined height. Accordingly, the guide device 30 moves in the downward direction in conjunction with the downward movement of the pair of meshing

chains

20, 20. When the car 2 reaches the position at the predetermined height, the guide device 30 is placed on the ceiling 23 a of the drive device 23. Further, during the downward movement of the car 2 at a position equal to or lower than the predetermined height, the pair of suspension springs 42, 42 contract, and the guide device 30 is held by the ceiling 23a of the drive device 23.

Also in the third embodiment, the existing hydraulic elevator device can be modified to the present elevator device in the same manner as in the first embodiment.

Therefore, also in the third embodiment, the same effect as in the first embodiment can be obtained.
Further, in the third embodiment, since the guide device operating member is constituted by one

suspension spring

42, 42, compared with the first embodiment in which the guide device operating member is constituted by the electromagnet device 33 and the magnetic plate 34. Cost can be reduced.

In the third embodiment, the plurality of guide devices 30 are attached to the pair of meshing

chains

20, 20, and each pair of the plurality of pairs of suspension springs 42, 42 suspended from the car floor 2a and having different lengths, It may be connected to each of the plurality of guide devices 30. Thereby, the displacement in the horizontal direction at a plurality of locations of the pair of self-supporting

engagement chains

Although not described in the above embodiments, the driving device that drives the pair of meshing chains up and down is provided with a braking device that prevents the pair of self-standing meshing chains from descending when the car is landing. Have. As the braking device, an electromagnetic brake device configured to perform a braking operation when power is not supplied is used. As a result, even when the operation of the driving device is stopped due to a power failure or the like, the lowering of the car is reliably prevented.

Further, in each of the above embodiments, the case where the existing hydraulic elevator apparatus is modified to the present elevator apparatus is described, but the present elevator apparatus may be applied to a new elevator apparatus.

Further, in each of the above-described embodiments, the case where the existing direct-type hydraulic elevator device is modified to the present elevator device is described, but the existing indirect hydraulic elevator device is modified to the present elevator device. Has the same effect.

Further, in each of the above embodiments, the ceiling of the driving device also serves as a holding member of the guide device operating member. However, a pedestal as a holding member may be provided in the pit, and the guide device may be held by the pedestal. .

1 hoistway, 2 car, 3 guide rail, 4 protection tube, 5 hydraulic cylinder, 6 plunger, 20 meshing chain, 23 drive, 23a ceiling (holding member, guide device operating member) 30 guide device, 31 guide member, 32 support member, 33 electromagnet device (guide device operation member), 34 magnetic plate (guide device operation member), 40 hanging rope (guide device operation member) 42 suspension spring (guide device operation member).

Claims

Riding car and elevator installed in the hoistway,
A pair of guide rails installed in the hoistway so as to extend in the up-down direction relative to each other with the car interposed therebetween, and a guide rail for guiding the elevation of the car,
By being connected to the car and being driven to change the direction from the horizontal direction to the vertical direction, the cars are engaged with each other to ascend in a self-supporting state, and the car is moved in the ascending direction and moved in the vertical direction. A pair of meshing chains that are driven while changing their orientation in the horizontal direction to disengage from each other and branch to move the car in the downward direction,
A driving device for driving the pair of meshing chains,
The guide member is mounted on the pair of meshing chains in a self-standing state so as to be able to ascend and descend, and is mounted on the pair of guide rails so as to be able to ascend and descend to a cylindrically shaped guide member surrounding a part of the pair of meshing chains. A guide device having a support member for supporting the member,
At the time of raising and lowering the car at a position higher than a predetermined height, the guide device is moved up and down in conjunction with the raising and lowering of the pair of meshing chains, and at the time of raising and lowering the car at a position lower than the predetermined height, A guide device operating member that holds the guide device at a retracted position that does not interfere with the riding vehicle that moves up and down,
An elevator apparatus comprising:
The elevator apparatus according to claim 1, further comprising a plurality of guide device operating members each having the different predetermined height.
The guide device actuating member is a magnetic plate attached to the pair of meshing chains, and is attached to the guide device, and when energized, magnetically attracts the magnetic plate so that the guide device is attached to the pair of meshing chains. The electromagnet device which lifts and lowers in conjunction with raising and lowering and releases the magnetic attraction of the magnetic plate when energization is stopped, and a holding member which holds the support member at the retracted position. Elevator equipment.
The said guide device operation member is provided with the hanging rope suspended from the said car and connected with the said support member, and the holding member which holds the said support member in the said retreat position. Elevator equipment.
The said guide apparatus operation member is provided with the suspension spring suspended from the said car and connected with the said support member, and the holding member which hold | maintains the said support member in the said evacuation position. Elevator equipment.
A riding car that is guided by a pair of guide rails and installed in the hoistway so that it can go up and down,
A protection tube embedded at the bottom of the hoistway,
A hydraulic cylinder mounted on the protection tube,
A plunger housed in the hydraulic cylinder so as to be movable in the vertical direction in conjunction with the elevator operation of the car, and a method of repairing an existing hydraulic elevator apparatus having:
Fixing the car to the pair of guide rails, removing the plunger and the hydraulic cylinder,
It is driven to change the direction from the horizontal direction to the vertical direction, meshes with each other and rises in an independent state, and is driven to change the direction from the vertical direction to the horizontal direction, and the mutual mesh is disengaged and branched A pair of meshing chains are installed in the hoistway so that the pair of self-supporting meshing chains is located directly below the car,
A drive device for driving the pair of meshing chains is installed in the hoistway,
A supporting member is mounted on the pair of guide rails so as to be able to move up and down, and the pair of meshing chains supported by the supporting member and formed in a cylindrical shape surrounding a part of the pair of meshing chains are in a self-standing state. To be able to move up and down, and install the guide device,
At the time of raising and lowering the car at a position higher than a predetermined height, the guide device is moved up and down in conjunction with the raising and lowering of the pair of meshing chains, and at the time of raising and lowering the car at a position lower than the predetermined height, A guide device operating member that holds the guide device at a retracted position that does not interfere with the climbing elevator is installed,
Release the fixation of the riding cage and the pair of guide rails,
A method for repairing an existing hydraulic elevator device, wherein the drive device drives the pair of meshing chains to repair the car so that the car can be raised and lowered.