JP7436126B1 - Elevator gondola installation method and gondola device - Google Patents

Abstract

An object of the present invention is to provide a gondola installation method for an elevator and a gondola device in which a car can be easily suspended by a lifting machine. SOLUTION: In an elevator gondola installation method, in an auxiliary beam placement step S1, an auxiliary beam is placed above the car. In the main rope cutting step S3, a part of the main rope is used as a holding rope by cutting the main rope. In the auxiliary beam connection step S4, the holding rope is connected to the auxiliary beam. In the lifting machine connection step S5, the auxiliary beam is connected to the lifting beam fixed above the car via the lifting machine. In the support release step S6, the car is suspended as a gondola from the auxiliary beam by a holding rope, and the auxiliary beam is suspended from the lifting beam by a lifting machine. [Selection diagram] Figure 2

Description

The present disclosure relates to a gondola installation method for an elevator in which a car is suspended as a gondola by a lifting machine, and a gondola device.

Patent Document 1 discloses an elevator hoistway construction method that uses a car as a scaffold for workers to carry out renovation work on an elevator. In the conventional elevator hoistway interior construction method disclosed in Patent Document 1, a hoisting machine support beam placed above the hoistway and a car in the hoistway are connected by a lifting machine, and the driving force of the hoistway connects the hoisting machine support beam and the car in the hoistway. Move the basket up and down. As a result, even when the hoisting machine and the like are removed, a worker can work in the hoistway by riding on the top of the car and moving the car up and down.

Japanese Patent Application Publication No. 8-2850

However, in the conventional elevator hoistway construction method disclosed in Patent Document 1, in order to connect a lifting machine to the car, it is necessary to conduct a preliminary survey of the car and to process the car on site based on the survey. . For this reason, it takes time and effort to connect the lifting machine to the car.

The present disclosure solves the above-mentioned problems, and aims to provide an elevator gondola installation method and a gondola device in which a car can be easily suspended by a lifting machine.

The elevator gondola installation method according to the present disclosure includes an auxiliary beam placement step of arranging an auxiliary beam above a car suspended by a main rope, a support step of supporting the car with a support separate from the main rope, After the supporting process, there is a main rope cutting process in which a part of the main rope is used as a holding rope by cutting the main rope, and after an auxiliary beam placement process and a main rope cutting process, the holding rope is cut in a position where the car can be hung. and a lifting machine connection process in which the auxiliary beam is connected to a fixed part fixed above the car via a lifting machine after the auxiliary beam arranging process. Then, after the auxiliary beam connection process and the lifting machine connection process, by releasing the support of the car from the support body, the car is suspended as a gondola from the auxiliary beam by the holding rope, and the auxiliary beam is suspended from the fixed part by the lifting machine. It is equipped with a support release step of lowering the support.
Further, the gondola device according to the present disclosure includes a cage as a gondola, an auxiliary beam arranged above the cage, a holding rope suspending the cage from the auxiliary beam, and a fixed part fixed above the cage. In addition to connecting the beams, the auxiliary beam is suspended from the fixed part, and is equipped with a lifting machine that moves the auxiliary beam in the vertical direction.

According to the elevator gondola installation method and gondola device according to the present disclosure, a car can be easily suspended by a lifting machine.

FIG. 2 is a configuration diagram showing an elevator that is a target of implementing the elevator gondola installation method according to the first embodiment. 3 is a flowchart showing a method for installing an elevator gondola according to Embodiment 1. FIG. FIG. 2 is a configuration diagram showing a state in which an auxiliary beam is arranged above the cage of FIG. 1; FIG. 4 is a configuration diagram showing a state in which the main rope in FIG. 3 is cut. FIG. 5 is a configuration diagram showing a state in which the holding rope in FIG. 4 is connected to an auxiliary beam. FIG. 6 is a configuration diagram showing a state in which the auxiliary beam of FIG. 5 is connected to a lifting beam via a lifting machine. FIG. 3 is a configuration diagram showing another example of the gondola device according to the first embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Modes for implementing the subject matter of the present disclosure will be described with reference to the accompanying drawings. In each figure, the same or corresponding parts are given the same reference numerals, and overlapping explanations will be simplified or omitted as appropriate. Note that the subject of the present disclosure is not limited to the following embodiments, and may include modifications of any constituent elements of the embodiments or any constituent elements of the embodiments within the scope of the spirit of the present disclosure. can be omitted.

Embodiment 1.
FIG. 1 is a configuration diagram showing an elevator to which the elevator gondola installation method according to the first embodiment is implemented. A car 2 and a counterweight 3 are suspended in the hoistway 1 by a main rope 4. Furthermore, a pair of car guide rails 5 and a pair of counterweight guide rails 6 are installed in the hoistway 1. The car 2 is arranged between a pair of car guide rails 5. The counterweight 3 is arranged between a pair of counterweight guide rails 6.

The car 2 has a car body 21 and a pair of car hanging wheels 22. A pair of car suspension wheels 22 are provided at the lower part of the car body 21.

The car body 21 has a car chamber 23 and a car frame 24. Passengers can get on and off the car 23. The car frame 24 is a frame surrounding the car room 23. The car frame 24 supports the car chamber 23. The pair of car suspension wheels 22 are provided at the lower part of the car frame 24 and spaced apart from each other in the horizontal direction.

The counterweight 3 has a counterweight main body 31 and a weight suspension wheel 32. The weight suspension wheel 32 is provided on the upper part of the counterweight main body 31.

At the top of the hoistway 1, a hoist 7, a first rope fastening device 8, and a second rope fastening device 9 are provided. The hoisting machine 7, the first rope fastening device 8, and the second rope fastening device 9 are supported by a support beam (not shown) fixed in the hoistway 1.

The hoist 7 is a drive device that generates a driving force to move the car 2 and the counterweight 3. The hoist 7 includes a hoist main body 71 and a drive sheave 72.

The drive sheave 72 is rotatably provided on the hoist main body 71. The hoist main body 71 has a motor and a brake. The motor of the hoist main body 71 generates a driving force that rotates the drive sheave 72. The brake of the hoist main body 71 applies a braking force to the drive sheave 72.

The main rope 4 has a first end 4a and a second end 4b. The first end 4a of the main rope 4 is connected to the first rope fastening device 8. The second end 4b of the main rope 4 is connected to the second rope fastening device 9. The main rope 4 is wound around a pair of car suspension wheels 22, a drive sheave 72, and a weight suspension wheel 32 in this order from the first rope attachment device 8, and reaches the second rope attachment device 9. Thereby, the main rope 4 suspends the car 2 and the counterweight 3 within the hoistway 1. That is, in this embodiment, the method of suspending the car 2 and the counterweight 3 by the main rope 4 is a 2:1 roping method.

When the drive sheave 72 is rotated by the driving force of the hoist main body 71, the car 2 and the counterweight 3 move in the vertical direction. The car 2 moves vertically while being guided by a pair of car guide rails 5. The counterweight 3 moves in the vertical direction while being guided by a pair of counterweight guide rails 6.

A control device (not shown) is provided within the hoistway 1. The control device controls the operation of the elevator. For example, the movement of the car 2 and the counterweight 3 is controlled by the control of the hoist 7 by a control device.

The car 2 is provided with an emergency stop device (not shown). The emergency stop device is provided at the bottom of the car body 21. The emergency stop device performs a gripping operation to grip the pair of car guide rails 5 when the downward speed of the car 2 reaches an excessive speed. The car 2 is brought to an emergency stop by the gripping operation of the emergency stop device.

The gripping operation of the emergency stop device can also be performed manually. The safety device grips the pair of car guide rails 5, so that the car 2 is supported by the pair of car guide rails 5 via the safety device.

Here, in elevators, renovation work may be performed due to reasons such as aging of the equipment. In the elevator repair work, a worker riding on the top of the car 2 performs the repair work inside the hoistway 1. That is, in elevator repair work, the car 2 is used as a scaffold for workers.

In elevator renovation work, for example, the existing hoisting machine 7 may be removed in order to install a new hoisting machine. In this case, since the car 2 cannot be moved by the driving force of the hoist 7, a gondola installation work is performed in which the car 2 is suspended as a scaffolding gondola using a lifting machine separate from the hoist 7. After the gondola installation work is completed, the car 2 becomes movable by the driving force of the lifting machine. A worker works in the hoistway 1 by moving the car 2 using the driving force of a lifting machine while riding on the top of the car 2.

Next, a method for installing an elevator gondola in which the car 2 is suspended as a scaffolding gondola by a lifting machine will be described.

FIG. 2 is a flowchart showing the elevator gondola installation method according to the first embodiment. The elevator gondola installation method includes an auxiliary beam arrangement step S1, a support step S2, a main rope cutting step S3, an auxiliary beam connection step S4, a lifting machine connection step S5, and a support release step S6. . Hereinafter, the elevator gondola installation method will simply be referred to as the "gondola installation method."

<Auxiliary beam placement process S1>
When implementing the gondola installation method, first, an auxiliary beam arrangement step S1 is performed. In the auxiliary beam placement step S1, an auxiliary beam is placed above the car 2. The auxiliary beam is carried above the car 2 from the landing in the building. In this embodiment, the auxiliary beam is carried above the car 2 from the top floor landing with the top of the car 2 aligned with the height of the top floor landing and the car 2 stopped.

FIG. 3 is a configuration diagram showing a state in which an auxiliary beam is arranged above the car 2 in FIG. 1. The car 2 is suspended by a portion of the main rope 4 from the first end 4a to the drive sheave 72. The counterweight 3 is suspended by a portion of the main rope 4 from the second end 4b to the drive sheave 72.

The part of the main rope 4 from which the car 2 is suspended has a first side car suspension part 41, a lower car suspension part 42, and a second side car suspension part 43.

The first side car suspension portion 41 is a portion of the main rope 4 from the first end 4 a to one of the car suspension wheels 22 . The lower car hanging portion 42 is a portion of the main rope 4 from one car hanging wheel 22 to the other car hanging wheel 22. The second side car suspension portion 43 is a portion of the main rope 4 from the other car suspension wheel 22 to the drive sheave 72.

The main rope 4 continues from the first end 4a to the first side car suspension part 41, the lower car suspension part 42, and the second side car suspension part 43 in this order, and reaches the drive sheave 72. Each of the first side car hanging part 41 and the second side car hanging part 43 extends in the vertical direction. The car 2 is arranged between a first side car hanging part 41 and a second side car hanging part 43. The lower car hanging portion 42 extends horizontally below the car 2.

In the auxiliary beam arrangement step S1, the auxiliary beam 10 is placed on the upper part of the car body 21 via a raising stand or the like. Thereby, the auxiliary beam 10 is placed above the car 2. The length of the auxiliary beam 10 is longer than the horizontal distance between the first side car hanging part 41 and the second side car hanging part 43.

<Support process S2>
After the auxiliary beam arrangement step S1, a support step S2 is performed. In the support step S2, the car 2 is moved to the set support position by the driving force of the hoist 7. The set support position is a position of the car 2 where a worker riding on the top of the car 2 can access the first rope fastening device 8, the second rope fastening device 9, and the lifting beam described later.

Further, in the support step S2, the car 2 is supported at the set support position by a support body different from the main rope 4. In this embodiment, the car 2 is supported by the pair of car guide rails 5 via the safety device by manually performing the gripping operation of the safety device. That is, in this embodiment, a pair of car guide rails 5 are used as supports for supporting the car 2. This prevents the load of the car 2 from being applied to the main rope 4.

In the support step S2, the load of the counterweight 3 is also prevented from being applied to the main rope 4. Therefore, in the support step S2, the counterweight 3 is supported by a support separate from the main rope 4.

When the car 2 is in the set support position, the counterweight 3 is located at the lower part of the hoistway 1. In this embodiment, the counterweight 3 is supported by the weight holder by interposing the weight holder between the bottom surface of the hoistway 1 and the counterweight 3. That is, in this embodiment, a weight holder is used as a support for supporting the counterweight 3. This prevents the load of the counterweight 3 from being applied to the main rope 4.

<Main rope cutting process S3>
After the support step S2, a main rope cutting step S3 is performed. In the main rope cutting step S3, a part of the main rope 4 is used as a holding rope by cutting the main rope 4.

FIG. 4 is a configuration diagram showing a state in which the main rope 4 of FIG. 3 is cut. In the main rope cutting step S3, an intermediate position of the second side car hanging portion 43 is set as a cutting position P, and the main rope 4 is cut at the cutting position P. At this time, each of the first side car hanging part 41 and the second side car hanging part 43 is temporarily fixed to the auxiliary beam 10 so that the main rope 4 does not fall from the car 2.

In the main rope cutting step S3, a portion of the main rope 4 from the cutting position P to the first end 4a is used as the holding rope 20. That is, in the main rope cutting step S3, the portion of the main rope 4 closer to the car 2 than the cutting position P is used as the holding rope 20.

The length of the holding rope 20 is a set length for holding. The set length for holding is a length in which the holding rope 20 is wound from one end of the auxiliary beam 10 around the pair of car hanging wheels 22 one after another and reaches the other end of the auxiliary beam 10 . The cutting position P is determined so that the length of the holding rope 20 becomes the set length for holding. Note that the parts of the main rope 4 other than the holding rope 20 are removed.

<Auxiliary beam connection process S4>
After the main rope cutting step S3, an auxiliary beam connecting step S4 is performed. In the auxiliary beam connecting step S4, the holding rope 20 is arranged at a position where the car 2 can be hung, and the holding rope 20 is connected to the auxiliary beam 10.

FIG. 5 is a configuration diagram showing a state in which the holding rope 20 of FIG. 4 is connected to the auxiliary beam 10. In the holding rope 20, the first end 4a of the main rope 4 remains as one end 20a of the holding rope 20. The other end 20b of the holding rope 20 is the cutting part of the main rope 4. Therefore, in the auxiliary beam connecting step S4, rope end processing is performed on the other end portion 20b of the holding rope 20.

In the auxiliary beam connecting step S4, the first rope fastening device 8 and the second rope fastening device 9 are removed from the support beam arranged at the upper part of the hoistway 1. At this time, one end 20a of the holding rope 20 is kept connected to the first rope fastening device 8.

The auxiliary beam 10 includes a first attachment part and a second attachment part. The first attachment part of the auxiliary beam 10 has a structure to which the first rope fastening device 8 is attached. The second attachment part of the auxiliary beam 10 has a structure to which the second rope fastening device 9 is attached. In this embodiment, one end of the auxiliary beam 10 serves as a first attachment portion, and the other end of the auxiliary beam 10 serves as a second attachment portion.

In the auxiliary beam connecting step S4, the first rope fastening device 8 removed from the upper part of the hoistway 1 is attached to the first attachment part of the auxiliary beam 10 as a first rope connector. In this embodiment, the first rope fastening device 8 is attached to the first attachment portion of the auxiliary beam 10 while the one end 20a of the holding rope 20 is connected to the first fastening device 8. At this time, the holding rope 20 is temporarily unfastened to the auxiliary beam 10, and while the holding rope 20 is moved, the first rope fastening device 8 is carried to the first attachment part of the auxiliary beam 10. Moreover, at this time, the holding rope 20 is moved while maintaining the state in which the holding rope 20 is wound around the pair of car suspension wheels 22. As a result, the holding rope 20 is placed at a position where the car 2 can be suspended. In this manner, in the auxiliary beam connecting step S4, one end portion 20a of the holding rope 20 is connected to the auxiliary beam 10 via the first rope fastening device 8.

Further, in the auxiliary beam connecting step S4, the second rope fastening device 9 removed from the upper part of the hoistway 1 is attached to the second attachment part of the auxiliary beam 10 as a second rope connector. After this, the other end 20b of the holding rope 20 is connected to the second rope fastening device 9. In this way, in the auxiliary beam connecting step, the other end 20b of the holding rope 20 is connected to the auxiliary beam 10 via the second rope fastening device 9.

That is, in the auxiliary beam connecting step S4, one end 20a and the other end 20b of the holding rope 20 are connected to the auxiliary beam 10, with the holding rope 20 being wound around the pair of car hanging wheels 22.

<Lifting machine connection process S5>
After the auxiliary beam connection step S4, a lifting machine connection step S5 is performed. In the lifting machine connection step S5, the auxiliary beam 10 is connected to the lifting beam as a fixed part via a lifting machine.

FIG. 6 is a configuration diagram showing a state in which the auxiliary beam 10 of FIG. 5 is connected to the lifting beam 11 via the lifting machine 12. The lifting beam 11 is fixed to the upper part of the hoistway 1 as a fixed part. Therefore, the lifting beam 11 is fixed above the car 2. When the car 2 is in the set support position, a worker riding on the top of the car 2 can access the lifting beam 11. In this embodiment, the auxiliary beam 10 is connected to the lifting beam 11 via the two lifting machines 12 in the lifting machine connecting step S5.

Each lifting machine 12 has a lifting machine main body 121, a lifting rope 122, and a lifting connector 123. The lifting beam 11 has a structure to which a lifting machine body 121 is attached.

The lifting rope 122 is provided on the lifting machine body 121. The lifting rope 122 is a hanging body from which the auxiliary beam 10 can be suspended. The hanging body of the lifting machine 12 may be a chain.

The lifting machine main body 121 has a motor. The motor of the lifting machine body 121 generates a driving force to move the lifting rope 122. The lifting machine main body 121 moves the lifting rope 122 relative to the lifting machine main body 121 by winding and letting out the lifting rope 122. An operation section (not shown) is connected to the lifting machine main body 121 via a cable. This allows the operating section to be operated at a position away from the lifting machine main body 121. The lifting machine main body 121 operates according to the operation of the operating section.

The lifting connector 123 is a connector that connects the lifting rope 122 to the auxiliary beam 10. The auxiliary beam 10 has a third attachment part. The third attachment portion of the auxiliary beam 10 has a structure to which a lifting connector 123 is attached. In this embodiment, the middle portion of the auxiliary beam 10 serves as the third attachment portion. The lifting connector 123 is attached to the third attachment part of the auxiliary beam 10. A lifting rope 122 is connected to the lifting connector 123 . Thereby, the lifting rope 122 is connected to the auxiliary beam 10 via the lifting connector 123.

In the lifting machine connection step S5, the lifting machine main body 121 is attached to the lifting beam 11. Moreover, in the lifting machine connection step S5, the lifting rope 122 let out from the lifting machine body 121 is connected to the third attachment part of the auxiliary beam 10 via the lifting connector 123. Thereby, the auxiliary beam 10 is connected to the lifting beam 11 via the lifting machine 12.
<Support release step S6>
After the lifting machine connection step S5, a support release step S6 is performed. In the support release step S6, support of the car 2 by the support body is released. That is, in the support release step S6, the support of the car 2 by the pair of car guide rails 5 is released.

When the car 2 is released from being supported by the pair of car guide rails 5, the car 2 is moved upward by the driving force of the lifting machine 12. As a result, the pair of car guide rails 5 are released from being gripped by the emergency stop device, and the support of the car 2 by the pair of car guide rails 5 is released.

When the support of the car 2 by the pair of car guide rails 5 is released, the auxiliary beam 10 is suspended from the lifting beam 11 by the lifting machine 12, and the car 2 is suspended from the auxiliary beam 10 by the holding rope 20 as a gondola for scaffolding. Can be lowered. The raising stand placed on the top of the car body 21 is removed after the support for the car 2 is released. As a result, a gondola device in which the car 2 is suspended by the lifting machine 12 as a gondola for scaffolding is installed.

Next, a gondola device obtained by the gondola installation method will be described.

As shown in FIG. 6, the gondola device includes a car 2, an auxiliary beam 10, a holding rope 20, and a lifting device 12. In the gondola device, the car 2 is used as a gondola for scaffolding.

The auxiliary beam 10 is arranged above the car 2. The auxiliary beam 10 is suspended from the lifting beam 11 by a lifting machine 12. The lifting machine 12 connects the auxiliary beam 10 to the lifting beam 11. That is, the auxiliary beam 10 is connected to the lifting beam 11 via the lifting machine 12. In this embodiment, a lifting machine main body 121 is attached to a lifting beam 11, and a lifting rope 122 is connected to an auxiliary beam 10 via a lifting connector 123.

The lifting machine 12 moves the lifting rope 122 in the vertical direction by the driving force of the lifting machine main body 121. Thereby, the auxiliary beam 10 moves in the vertical direction with respect to the lifting beam 11.

The car 2 is suspended from the auxiliary beam 10 by a holding rope 20. Thereby, the car 2, the holding rope 20, and the auxiliary beam 10 are suspended from the lifting beam 11 by the lifting machine 12.

The holding rope 20 is wound around a pair of car hanging wheels 22. One end 20a of the holding rope 20 is connected to the auxiliary beam 10 via a first rope fastener 8 serving as a first rope connector. The other end 20b of the holding rope 20 is connected to the auxiliary beam 10 via a second rope fastening device 9 as a second rope connector. The holding rope 20 is sequentially wound around a pair of car suspension wheels 22 from one end 20a, and reaches the other end 20b.

The car 2 and the holding rope 20 do not move relative to the auxiliary beam 10. Thereby, the position of the car 2 with respect to the auxiliary beam 10 is maintained. Therefore, the car 2 as a gondola for scaffolding moves vertically with the auxiliary beam 10 relative to the lifting beam 11 by the driving force of the lifting machine 12.

When a worker works in the hoistway 1 after installing the gondola device, the worker riding on the top of the car 2 operates the operation part of the lifting machine 12 to move the car 2 in the vertical direction.

In such a gondola installation method, the auxiliary beam 10 is placed above the car 2 in the auxiliary beam placement step S1, and the main rope 4 is cut in the main rope cutting step S3, so that a part of the main rope 4 is cut into the holding rope 20. do. Further, the holding rope 20 is connected to the auxiliary beam 10 in the auxiliary beam connecting step S4, and the auxiliary beam 10 is connected to the lifting beam 11 fixed above the car 2 via the lifting device 12 in the lifting device connecting step S5. . Therefore, the auxiliary beam 10 can be suspended by the lifting machine 12 while the car 2 is suspended from the auxiliary beam 10 by the holding rope 20. Thereby, the car 2 can be suspended as a gondola for scaffolding by the lifting machine 12 without processing the car 2. Therefore, there is no need to conduct a prior investigation of the car 2 or to process the car 2 based on the investigation, and the car 2 can be easily suspended by the lifting machine 12.

Further, in the auxiliary beam connecting step S4, one end 20a and the other end 20b of the holding rope 20 are connected to the auxiliary beam 10, with the holding rope 20 being wound around the pair of car suspension wheels 22. Therefore, the state of the car 2 suspended by the main rope 4 during normal operation can be directly reproduced as the state of the car 2 suspended from the auxiliary beam 10 by the holding rope 20. Thereby, the holding rope 20 can hang the car 2 at a position where the weight of the car 2 is well balanced, and the state of the car 2 can be stabilized. Therefore, it is possible to improve the stability of the work performed by the worker riding on the upper part of the car 2.

Further, the main rope 4 when carrying out the support step S2 is connected to a first rope fastening device 8 and a second rope fastening device 9, which are respectively provided at the upper part of the hoistway 1. In the auxiliary beam connecting step S4, the first rope fastening device 8 removed from the upper part of the hoistway 1 is attached to the auxiliary beam 10, thereby connecting one end 20a of the holding rope 20 to the auxiliary beam 10. Therefore, the existing first rope fastening device 8 can be used as the first rope connector for connecting the one end portion 20a of the holding rope 20 to the auxiliary beam 10. This makes it possible to reduce component costs.

Further, the main rope 4 when carrying out the support step S2 is connected to a first rope fastening device 8 and a second rope fastening device 9, which are respectively provided at the upper part of the hoistway 1. In the auxiliary beam connecting step S4, the second rope fastening device 9 removed from the upper part of the hoistway 1 is attached to the auxiliary beam 10, thereby connecting the other end 20b of the holding rope 20 to the auxiliary beam 10. Therefore, the existing second rope fastening device 9 can be used as the first rope connector that connects the other end 20b of the holding rope 20 to the auxiliary beam 10. This makes it possible to reduce component costs.

Further, in the main rope cutting step S3, the first end 4a of the main rope 4 is left as one end 20a of the holding rope 20. Therefore, one end portion 20a of the holding rope 20 can be used in a state where rope end processing has already been completed. Thereby, there is no need to newly perform rope end processing on the one end portion 20a of the holding rope 20, and the effort of processing the holding rope 20 can be reduced. Therefore, the work of suspending the car 2 by the lifting machine 12 can be further facilitated.

In addition, in such a gondola device, the car 2 is suspended from the auxiliary beam 10 by a holding rope 20, and the auxiliary beam 10 is suspended by a lifting machine 12 from a lifting beam 11 arranged at the top of the hoistway 1. It is being Therefore, the car 2 can be suspended as a gondola for scaffolding by the lifting machine 12 without processing the car 2. Thereby, the car 2 can be easily suspended by the lifting device 12.

Further, the holding rope 20 is wound around a pair of car hanging wheels 22. Therefore, the car 2 can be suspended by the holding rope 20 at a position where the weight of the car 2 is well balanced, and the condition of the car 2 can be stabilized. Therefore, it is possible to improve the stability of the work performed by the worker riding on the upper part of the car 2.

Further, the lifting machine main body 121 is attached to the lifting beam 11 fixed above the car 2. Furthermore, the lifting rope 122 is connected to the auxiliary beam 10. Therefore, the auxiliary beam 10 can be easily connected to the lifting beam 11 via the lifting machine 12.

In the above embodiment, the lifting machine main body 121 is attached to the lifting beam 11, and the lifting rope 122 is connected to the auxiliary beam 10. However, the lifting machine main body 121 may be attached to the auxiliary beam 10 and the lifting rope 122 may be connected to the lifting beam 11. In this case, as shown in FIG. 7, a lifting rope 122 is connected to the lifting beam 11 via a lifting connector 123. Furthermore, in this case, the lifting beam 11 has a structure to which a lifting connector 123 is attached. Furthermore, in this case, the third attachment part of the auxiliary beam 10 has a structure to which the lifting machine main body 121 is attached. Even in this case, the auxiliary beam 10 can be easily connected to the lifting beam 11 via the lifting machine 12.

Further, depending on the space within the hoistway 1, it is possible to select which of the lifting beam 11 and the auxiliary beam 10 the lifting machine main body 121 is attached to. Thereby, the work of connecting the auxiliary beam 10 to the lifting beam 11 via the lifting machine 12 can be further facilitated.

Further, in the above embodiment, the gondola installation method is applied to an elevator in which the main rope 4 is wound around a pair of car suspension cars 22. That is, the gondola installation method is implemented for an elevator in which the car 2 is suspended by the main rope 4 using a 2:1 roping method. However, the elevator to which the gondola installation method is implemented is not limited to this.

For example, the gondola installation method may be applied to an elevator in which the main rope 4 is connected to the top of the car 2. That is, the gondola installation method may be applied to an elevator in which the car 2 is suspended by the main rope 4 using a 1:1 roping method. In this case, in the main rope cutting step S3, a part of the main rope 4 connected to the upper part of the car 2 is used as a holding rope. Since the holding rope is connected to the upper part of the car 2, it is placed in a position where the car 2 can be suspended. Furthermore, in this case, in the auxiliary beam connecting step S4, the upper end of the holding rope is connected to the auxiliary beam 10 via a rope connector. Even in this case, the car 2 can be suspended as a gondola for scaffolding by the lifting machine 12 without processing the car 2.

Further, in the gondola device as well, a holding rope for suspending the car 2 from the auxiliary beam 10 may be connected to the upper part of the car 2. In this case, the upper end of the holding rope is connected to the auxiliary beam 10 via a rope connector. In the gondola device as well, the car 2 can be suspended as a gondola for scaffolding by the lifting machine 12 without processing the car 2.

Further, in the embodiment described above, the gondola installation method is implemented for an elevator in which the hoisting machine 7 is provided at the upper part of the hoistway 1. However, the present invention is not limited thereto, and, for example, the gondola installation method may be applied to an elevator in which the hoisting machine 7 is provided at the lower part of the hoistway 1. In this case, a car side return wheel and a counterweight side return wheel are provided at the upper part of the hoistway 1. Further, in this case, the main rope 4 is wound around the pair of car suspension wheels 22, the car side return wheel, the drive sheave 72, the counterweight side return wheel, and the weight suspension wheel 32 in this order from the first end 4a, The second end 4b is reached. Further, in this case, in the main rope cutting step S3, the cutting position P is an intermediate position of the main rope 4 from the other car hanging wheel 22 to the car side return wheel.

Further, in the above embodiment, in the auxiliary beam connecting step S4, the first rope fastening device 8 is attached to the auxiliary beam 10 as the first rope connecting device, and the second rope fastening device 9 is attached to the auxiliary beam as the second rope connecting device. It is attached to 10. However, a new rope connector different from the first rope fastening device 8 may be attached to the auxiliary beam 10 as the first rope connector. Further, a new rope connecting device different from the second rope fastening device 9 may be attached to the auxiliary beam 10 as the second rope connecting device.

Further, in the above embodiment, the first end 4a of the main rope 4 is left as one end 20a of the holding rope 20 in the main rope cutting step S3. However, the main rope 4 is cut at an intermediate position between the first side car hanging part 41 and the second side car hanging part 43 of the main rope 4 without leaving the first end 4a of the main rope 4. Good too. In this case, since each of the one end 20a and the other end 20b of the holding rope 20 becomes a cutting part of the main rope 4, rope end processing is performed on each of the one end 20a and the other end 20b of the holding rope 20. . Even in this case, a part of the main rope 4 can be used as the holding rope 20.

Further, in the above embodiment, in the supporting step S2, the car 2 is supported by the pair of car guide rails 5 via the emergency stop device. However, a cable-like body such as a rope or a chain may be used as a support for supporting the car 2. In this case, in the support step S2, the cable-like body hanging downward from the lifting beam 11 is wound around the car frame 24 and connected to the car 2. The car 2 is supported by being suspended from a lifting beam 11 by a cable. Even in this case, the car 2 can be supported without relying on the main rope 4.

Further, in the above embodiment, the auxiliary beam arrangement step S1 is performed before the support step S2. However, the auxiliary beam arrangement step S1 may be performed at any time before the auxiliary beam connecting step S4 and the lifting machine connecting step S5. Therefore, for example, the auxiliary beam placement step S1 may be performed after the support step S2 and before the main rope cutting step S3, or the auxiliary beam placement step S1 may be performed after the main rope cutting step S3 and before the auxiliary beam connection step S4. You may implement process S1.

Further, in the above embodiment, the auxiliary beam connecting step S4 is performed before the lifting machine connecting step S5. However, the auxiliary beam connection step S4 may be performed after the lifting machine connection step S5 and before the support release step S6.

Moreover, in the embodiment described above, the lifting machine connection process S5 is performed after the auxiliary beam connection process S4. However, the lifting machine connection step S5 may be performed at any time after the auxiliary beam arrangement step S1 and before the support release step S6.

The configurations described in the embodiments described above are examples of the content of the present disclosure. Embodiments can be combined with other known techniques. It is possible to omit or change a part of the configuration of the embodiment without departing from the gist of the present disclosure.

1 hoistway, 2 car, 4 main rope, 4a first end, 4b second end, 5 car guide rail (support body), 8 first rope fastening device (first rope connector), 9 second rope Stopping device (second rope connector), 10 Auxiliary beam, 11 Lifting beam (fixed part), 12 Lifting machine, 20 Holding rope, 20a One end, 20b Other end, 21 Car body, 22 Car hanging wheel, 121 Lifting machine body, 122 Lifting rope.

Claims (7)

an auxiliary beam placement step of arranging an auxiliary beam above the cage suspended by the main rope;
a supporting step of supporting the cage with a support separate from the main rope;
After the supporting step, a main rope cutting step in which a part of the main rope is used as a holding rope by cutting the main rope;
After the auxiliary beam arranging step and the main rope cutting step, an auxiliary beam connecting step of arranging the holding rope at a position where the car can be suspended and connecting the holding rope to the auxiliary beam;
After the auxiliary beam arrangement step, a lifting machine connecting step of connecting the auxiliary beam to a fixed part fixed above the car via a lifting machine;
After the auxiliary beam connecting step and the lifting machine connecting step, by releasing the support of the car from the support body, the car is suspended as a gondola from the auxiliary beam by the holding rope, and the car is suspended from the fixed part as a gondola. An elevator gondola installation method comprising: a support release step of suspending the auxiliary beam by a lifting machine. The car has a car body and a car hanging wheel provided on the car body,
In the supporting step, the car is supported by the support body different from the main rope wound around the car hanging wheel;
In the auxiliary beam connecting step, with the holding rope wound around the car hanging wheel, one end of the holding rope is connected to the auxiliary beam via a first rope connecting device, and a second rope connecting device is connected to the supporting rope. The gondola installation method for an elevator according to claim 1, wherein the other end of the holding rope is connected to the auxiliary beam via. The main rope when carrying out the supporting step is connected to a first rope fastening device and a second rope fastening device respectively provided at the upper part of the hoistway,
In the auxiliary beam connecting step, the first rope fastening device removed from the top of the hoistway is attached to the auxiliary beam as the first rope connector, and the second rope fastening device removed from the top of the hoistway is attached to the auxiliary beam. The elevator gondola installation method according to claim 2, wherein the second rope connector is attached to the auxiliary beam. 3. In the main rope cutting step, of the first end and the second end of the main rope, the first end connected to the first rope fastening device is used as one end of the holding rope. How to install an elevator gondola as described in . A basket as a gondola,
an auxiliary beam placed above the cage;
a retaining rope suspending the cage from the auxiliary beam;
a lifting machine that connects the auxiliary beam to a fixed part fixed above the car, suspends the auxiliary beam from the fixed part, and moves the auxiliary beam in the vertical direction ;
the cage and the holding rope do not move relative to the auxiliary beam;
A gondola device in which the position of the car relative to the auxiliary beam is maintained . The car has a car body and a car hanging wheel provided on the car body,
The holding rope is wound around the car hanging wheel,
a first rope connector connecting one end of the holding rope to the auxiliary beam;
The gondola device according to claim 5, further comprising: a second rope connector connecting the other end of the holding rope to the auxiliary beam. The lifting machine includes a hanging body capable of suspending the auxiliary beam, and a lifting machine main body that moves the hanging body in the vertical direction,
The gondola apparatus according to claim 5 or 6, wherein the lifting machine main body is attached to one of the fixed part and the auxiliary beam, and the hanging body is connected to the other.

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