WO2020065774A1

WO2020065774A1 - Device and method for lifting balance weight for elevators

Info

Publication number: WO2020065774A1
Application number: PCT/JP2018/035720
Authority: WO
Inventors: 雅哉安部; 高木　敦史; 剛樹引地; 啓太島林; 健弘照井; 武司阿部; 寛人古川; 佐藤　弘司
Original assignee: 三菱電機ビルテクノサービス株式会社; 三菱電機株式会社
Priority date: 2018-09-26
Filing date: 2018-09-26
Publication date: 2020-04-02
Also published as: JPWO2020065774A1; CN112739638A; JP6798644B2; CN112739638B

Abstract

Provided is a device for lifting a balance weight for elevators, the device being capable of easily hoisting a balance weight. In an elevator provided with a balance weight and a car supported by a main rope wound around a winding machine, the device for lifting a balance weight for elevators is provided with: a support body which supports a lower section of the balance weight; a pair of holding bodies which hold, on the sideways of the weight balance, a pair of weight-side guide rails for guiding the balance weight, at the bottom of a hoistway of the elevator; and a pair of lifting bodies which are respectively supported by the pair of holding bodies on the sideways of the balance weight and which pull up the balance weight by pulling up the support body.

Description

Lifting device and method of lifting counterweight

The present invention relates to a lifting device and a lifting method of a counterweight for an elevator.

Patent Document 1 discloses a lifting device for a counterweight of an elevator. According to the lifting device, even when an emergency stop occurs near the top floor of the car, the car can be moved downward by lifting the counterweight.

Japanese Patent No. 6251367

However, in the lifting device described in Patent Literature 1, it is necessary to provide a lifting device above the counterweight. For this reason, it takes time to install the lifting device.

The present invention has been made to solve the above-mentioned problems. An object of the present invention is to provide a lifting device and a lifting method of a counterweight of an elevator that can easily lift the counterweight.

A lifting device for a counterweight of an elevator according to the present invention is an elevator equipped with a basket and a counterweight supported by a main rope wound around a hoist, and a supporter for supporting a lower portion of the counterweight. At the bottom of the hoistway of the elevator, a pair of grippers respectively gripping a pair of weight-side guide rails for guiding the counterweight on the sides of the counterweight, and the pair of grippers on the sides of the counterweight. And a pair of lifting bodies for lifting the counterweight by lifting the support.

A lifting device for a counterweight of an elevator according to the present invention is an elevator provided with a basket and a counterweight supported by a main rope wound around a hoist, comprising at least one pulley, and a lower portion of the counterweight. A pair of holding bodies for holding a pair of weight side guide rails for guiding the counterweight at the sides of the counterweight at the bottom of the hoistway of the elevator, and a side of the counterweight. A lifting body supported by one of the pair of gripping bodies, and being wound around the at least one pulley, being connected to the other of the pair of gripping bodies and the lifting body, and being lifted by the lifting body. And a lifting rope for lifting the counterweight.

A lifting device for a counterweight of an elevator according to the present invention is an elevator provided with a basket and a counterweight supported by a main rope wound around a hoist, which supports a part of a lower portion of the counterweight. A support having a side support portion and another side support portion supporting the other side of the lower portion of the counterweight; and a pair of weight side guide rails for guiding the counterweight at the bottom of the hoistway of the elevator. A pair of gripping bodies respectively gripping the sides of the counterweight, and a pair of lifting bodies that are respectively supported by the pair of grippers on the sides of the counterweight and pull up the counterweight by pulling up the support; Detachable and retractable between the counterweight and the one-side support and between the counterweight and the other-side support. A pair of spacers provided, comprising a.

According to a method of lifting a counterweight of an elevator according to the present invention, in a lift provided with a basket and a counterweight supported by a main rope wound around a hoist, a lower portion of the counterweight is supported by a support. A supporting step, a gripping step of gripping a pair of weight side guide rails for guiding the counterweight by a pair of grippers at the bottom of the hoistway of the elevator, respectively, on a side of the counterweight, and the pair of grips. A lifting step of lifting the counterweight by lifting up the support by the pair of lifting bodies, each of which supports the pair of lifting bodies by a side of the counterweight.

According to a method of lifting a counterweight of an elevator according to the present invention, in a lift provided with a basket and a counterweight supported by a main rope wound around a hoist, a lower portion of the counterweight is supported by a support. A supporting step, at a bottom portion of the hoistway of the elevator, a pair of gripping bodies, a gripping step of gripping a pair of weight side guide rails for guiding the counterweight on the sides of the counterweight, respectively; A winding step of winding a lifting rope around at least one pulley provided, and one of the pair of holding bodies supports a lifting body on the side of the counterweight, and the other of the pair of holding bodies and the other The lifting rope is connected to a lifting body, and the lifting weight lifts the lifting rope to lift the counterweight. And the process, with a.

According to a method of lifting a counterweight of an elevator according to the present invention, in a lift provided with a basket and a counterweight supported by a main rope wound around a hoist, the counterweight is supported by one side support of a support. A supporting step of supporting one side of the lower part of the counterweight, and supporting the other side of the lower part of the counterweight by the other side support part of the support body, and at the bottom of the hoistway of the elevator, A gripping step of gripping a pair of weight-side guide rails for guiding the counterweight on the sides of the counterweight, respectively, and the pair of grippers support a pair of lifting bodies on the sides of the counterweight, One of the pair of lifting bodies pulls up the one-side support portion of the support to raise the counterweight, and the counterweight and the support A spacer is arranged between the supporting member and the other supporting portion, and the counterweight is raised by pulling up the other supporting portion of the supporting member by the other of the pair of lifting members, and the one supporting portion of the supporting member is lowered. A lifting device that disposes a spacer between the counterweight and the one-side support of the support, and lifts the counterweight by lifting the one-side support of the support by one of the pair of lifting bodies. And a process.

According to the invention, the lifting body lifts the counterweight on the side of the counterweight. Therefore, the counterweight can be easily lifted.

1 is a configuration diagram of an elevator system to which a lifting device for a counterweight of an elevator according to a first embodiment is applied. FIG. 4 is a diagram for explaining a method of lifting the counterweight of the elevator according to the first embodiment. FIG. 10 is a diagram for explaining a method of lifting a counterweight of an elevator according to a second embodiment. FIG. 14 is a diagram for explaining a method of lifting a counterweight of an elevator according to a third embodiment. FIG. 14 is a diagram for describing a method of lifting a counterweight of an elevator according to a fourth embodiment. FIG. 15 is a diagram for describing a method of lifting a counterweight of an elevator according to a fifth embodiment. FIG. 21 is a diagram for describing a method of lifting a counterweight of an elevator according to a sixth embodiment.

A mode for carrying out the present invention will be described with reference to the accompanying drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals. Duplicate description of this part is appropriately simplified or omitted.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram of an elevator system to which a lifting device for a counterweight of an elevator according to Embodiment 1 is applied.

エレベーター The elevator system in Fig. 1 is an elevator system without a machine room. In the elevator system, the hoistway 1 passes through each floor of the building. Each of a plurality of landings (not shown) is provided on each floor of the building. Each of the landings faces the hoistway 1.

The hoist 2 is provided above the hoistway 1. The sheave 3 is attached to a rotating shaft of the hoist 2. The main rope 4 is wound around the sheave 3.

A pair of car side guide rails 5 are provided in the hoistway 1. FIG. 1 shows only one of the pair of car-side guide rails 5. The pair of weight side guide rails 6 are provided in the hoistway 1.

The car 7 is provided inside the hoistway 1. The car 7 is guided by a pair of car-side guide rails 5. The car 7 is supported on one side of the main rope 4. The counterweight 8 is provided inside the hoistway 1. The counterweight 8 is guided by a pair of weight-side guide rails 6. The counterweight 8 is supported on the other side of the main rope 4.

The car-side buffer 9 is provided at the bottom of the hoistway 1 below the car 7. The weight-side buffer 10 is provided at the bottom of the hoistway 1 below the counterweight 8.

The control device 11 is provided directly above the hoisting machine 2 and above the hoistway 1. The control device 11 is provided to control the entire elevator system.

か In the event of an elevator failure, power failure, etc., the car 7 may not be able to run using electric power. At this time, if the car 7 is stopped near the top floor, there is a case where restoration work for the hoisting machine 2, the control device 11 and the like cannot be performed from above the car 7.

In this case, the position of the car 7 is lowered by raising the counterweight 8 at the bottom of the hoistway 1. As a result, a state in which restoration work for the hoisting machine 2, the control device 11, and the like can be performed from above the car 7 is achieved.

Next, a method of lifting the counterweight 8 will be described with reference to FIG.
FIG. 2 is a diagram for explaining a method of lifting the counterweight of the elevator according to the first embodiment.

(2) The counterweight 8 is lifted from the state supported by the weight-side buffer 10 through the steps (A) to (F) of FIG.

(A) of FIG. 2 shows a lifting process of the lifting process. In the lifting process, the counterweight 8 is pushed up by the jack 12 arranged at the bottom of the hoistway 1.

(B) of FIG. 2 shows a supporting process, a gripping process, and a part of a first lifting process of a lifting process. In the supporting step, the support 14 of the lifting device 13 supports the lower part of the counterweight 8. In the gripping step, the pair of grippers 15 of the lifting device 13 grip the pair of weight-side guide rails 6 on the sides of the counterweight 8. In a part of the first lifting step of the lifting stroke, the pair of grippers 15 support the pair of lifting bodies 16 of the lifting device 13 on the sides of the counterweight 8. The pair of lifting bodies 16 support the support 14. In this state, the jack 12 not shown in FIG. 2B is removed.

(C) of FIG. 2 shows a part of the first lifting step of the lifting process. In a part of the first lifting step of the lifting stroke, the pair of lifting bodies 16 is raised to the limit of the lifting margin. As a result, the counterweight 8 is raised.

（(D) of FIG. 2 shows a step of lowering the lifting stroke. In the step of lowering the lifting stroke, the pair of lifting bodies 16 are lowered to the limit. As a result, the support 14 is pulled down. At this time, a brake (not shown) restricts rotation of the hoisting machine 2 (not shown in FIG. 2). As a result, the counterweight 8 maintains the stopped state at the raised position.

(E) of FIG. 2 shows an arrangement process of the lifting stroke. In the arrangement process of the lifting process, the spacer 17 of the lifting device 13 is arranged so as to fill a vertical gap between the counterweight 8 and the support 14. For example, the spacer 17 is attached to a lower portion of the counterweight 8.

(F) of FIG. 2 shows a second lifting step of the lifting process. In the second lifting step of the lifting stroke, the pair of lifting bodies 16 is raised to the limit of the lifting margin. As a result, the counterweight 8 is raised. In this state, the pair of lifting bodies 16 are pulled down to the limit.

Then, if necessary, the steps of arranging the lifting stroke and the second lifting step shown in FIGS. 2E and 2F are repeated. At this time, the spacer 17 is set according to the size of the vertical gap between the counterweight 8 and the support 14. For example, a spacer 17 that matches the size of the gap in the vertical direction between the counterweight 8 and the support 14 is selected from a plurality of spacers 17 having different lengths. For example, adjustment is performed so that the length of the spacer 17 provided to be extendable and contractible is equal to the size of the vertical gap between the counterweight 8 and the support 14.

According to the first embodiment described above, the lifting body 16 lifts the counterweight 8 on the side of the counterweight 8. The work at this time is performed from the bottom of the hoistway 1. Therefore, the counterweight 8 can be easily lifted.

When the support 14 is arranged below the counterweight 8, the jack 12 may be used. For this reason, the lifting device 13 can be easily installed.

(2) The steps shown in FIGS. 2E and 2F are repeated using the spacer 17. Therefore, the counterweight 8 can be raised higher.

Embodiment 2 FIG.
FIG. 3 is a diagram for explaining a method of lifting the counterweight of the elevator according to the second embodiment. The same or corresponding parts as those of the first embodiment are denoted by the same reference numerals. The description of this part is omitted.

The support 14 of the second embodiment includes one side support 14a, the other side support 14b, the connecting part 14c, and the base 14d.

(A) of FIG. 3 shows one side of the support process, the other side of the support process, the gripping process, and a part of the first lifting process of the lifting process. In the one-side support step of the support step, the one-side support part 14a of the support 14 supports the lower part of the counterweight 8 supported by the weight buffer 10 so as to hold one side thereof. In the other side support step of the support step, the other side support portion 14b of the support 14 supports the counterweight 8 supported by the weight buffer 10 so as to hold the other side under the counterweight 8. In the gripping step, the pair of grippers 15 grip the pair of weight-side guide rails 6 on the sides of the counterweight 8. In a part of the first lifting step of the lifting stroke, the pair of gripping bodies 15 support the pair of lifting bodies 16 on the sides of the counterweight 8. One of the pair of lifting bodies 16 supports the one-side support portion 14a. The other of the pair of lifting bodies 16 supports the other-side support portion 14b.

(B) of FIG. 3 shows the connecting step of the supporting step. In the connecting step of the supporting step, the connecting part 14c of the support 14 connects the one-side supporting part 14a and the other-side supporting part 14b.

(C) of FIG. 3 shows a part of the first lifting step of the lifting process. In a part of the first lifting step of the lifting stroke, the pair of lifting bodies 16 is raised to the limit of the lifting margin. As a result, the counterweight 8 is raised.

(D) of FIG. 3 shows a step of lowering the lifting stroke. In the lowering step of the lifting process, the base 14d of the support 14 is connected to the one-side support 14a and the other-side support 14b below the connection 14c. Thereafter, the pair of lifting bodies 16 are pulled down to the limit. As a result, the support 14 is pulled down. At this time, a brake (not shown) stops the rotation of the hoist 2 (not shown in FIG. 3D). As a result, the counterweight 8 maintains the stopped state at the raised position.

(E) of FIG. 3 shows an arrangement process of the lifting stroke. In the disposing step, the spacer 17 is disposed so as to fill a vertical gap between the counterweight 8 and the base 14 d of the support 14.

(F) of FIG. 3 shows a second lifting step of the lifting stroke. In the second lifting step, the pair of lifting bodies 16 are raised to the limit of the lifting allowance. As a result, the counterweight 8 is raised. In this state, the pair of lifting bodies 16 are pulled down to the limit.

Then, if necessary, the steps of arranging the lifting stroke and the second lifting step shown in FIGS. 3E and 3F are repeated. At this time, the spacer 17 is set according to the size of the vertical gap between the counterweight 8 and the base 14 d of the support 14. For example, a spacer 17 is selected from a plurality of spacers 17 having different lengths that match the size of the vertical gap between the counterweight 8 and the base 14 d of the support 14. For example, adjustment is performed so that the length of the spacer 17 provided to be extendable and contractible is equal to the dimension of the vertical gap between the counterweight 8 and the base 14 d of the support 14.

According to the second embodiment described above, one side support portion 14 a of the support 14 supports one side of the lower part of the counterweight 8 supported by the weight buffer 10. The other-side support portion 14 b of the support 14 supports the other side of the lower part of the counterweight 8 supported by the weight buffer 10. Therefore, the counterweight 8 can be easily lifted without using the jack 12.

Embodiment 3 FIG.
FIG. 4 is a diagram for explaining a method of lifting a counterweight of an elevator according to the third embodiment. The same or corresponding parts as those of the second embodiment are denoted by the same reference numerals. The description of this part is omitted.

In the support portion 15b according to the third embodiment, the one-side support portion 14a is disposed so as to be vertically guided by one of the pair of weight-side guide rails 6. For example, the one-side support portion 14a is arranged so as to extend to the side of the weight buffer 10. The other-side support portion 14b is arranged so as to be vertically guided by the other of the pair of weight-side guide rails 6. For example, the other-side support portion 14 b is arranged to extend to the side of the weight buffer 10.

According to the third embodiment described above, the one-side support portion 14a is guided by one of the pair of weight-side guide rails 6 in the vertical direction. The other side support portion 14b is vertically guided by the other of the pair of weight side guide rails 6. For this reason, the counterweight 8 can be raised smoothly.

Embodiment 4 FIG.
FIG. 5 is a diagram for explaining a method of lifting the counterweight of the elevator according to the fourth embodiment. The same or corresponding parts as those of the second embodiment are denoted by the same reference numerals. The description of this part is omitted.

The support 14 of the fourth embodiment includes at least one pulley 18. For example, one side support portion 14a of the support 14 includes one of a pair of pulleys 18. The other support portion 14 b of the support 14 includes the other of the pair of pulleys 18.

(A) of FIG. 5 shows one side of the support process, the other side of the support process, the gripping process, and a part of the first lifting process of the lifting process. In the one-side supporting step of the supporting step, the one-side supporting portion 14a supports one side of the lower part of the counterweight 8 supported by the weight-side buffer 10. In the other side support step of the support step, the other side support portion 14b supports the other side of the lower part of the counterweight 8 supported by the weight side buffer 10. In the gripping step, the pair of grippers 15 grip the pair of weight-side guide rails 6 on the sides of the counterweight 8. In a part of the first lifting process of the lifting stroke, one of the pair of gripping bodies 15 supports the lifting body 16 on the side of the counterweight 8.

(B) of FIG. 5 shows a connecting step of the supporting step, a winding step, and a part of the first lifting step of the lifting step. In the connecting step of the supporting step, the connecting part 14c of the support 14 connects the one-side supporting part 14a and the other-side supporting part 14b. In the winding step, the lifting rope 19 of the lifting device 13 is wound around a pair of pulleys 18. In a part of the first lifting step of the lifting stroke, one end of the lifting rope 19 is connected to the other of the pair of gripping bodies 15. The other end of the lifting rope 19 is connected to the lifting body 16.

(C) of FIG. 5 shows a part of the first lifting step of the lifting process. In a part of the first lifting step of the lifting stroke, the pair of lifting bodies 16 is raised to the limit of the lifting margin. As a result, the counterweight 8 is raised following the lifting of the lifting rope 19.

(D) of FIG. 5 shows a step of lowering the lifting stroke. In the lowering step of the lifting process, the base 14d of the support 14 is connected to the one-side support 14a and the other-side support 14b below the connection 14c. Thereafter, the pair of lifting bodies 16 are pulled down to the limit. As a result, the support 14 is pulled down following the pulling down of the lifting rope 19. At this time, a brake (not shown) stops rotation of the hoist 2 (not shown in FIG. 5D). As a result, the counterweight 8 maintains the stopped state at the raised position.

(E) of FIG. 5 shows an arrangement process of the lifting stroke. In the disposing step, the spacer 17 is disposed so as to fill a vertical gap between the counterweight 8 and the base 14 d of the support 14.

(F) of FIG. 5 shows a second lifting step of the lifting stroke. In the second lifting step, the pair of lifting bodies 16 are raised to the limit of the lifting allowance. As a result, the counterweight 8 is raised. In this state, the pair of lifting bodies 16 are pulled down to the limit.

(5) Thereafter, if necessary, the steps of arranging the lifting stroke and the second lifting step shown in FIGS. 5E and 5F are repeated. At this time, the spacer 17 is set according to the size of the vertical gap between the counterweight 8 and the base 14 d of the support 14. For example, a spacer 17 is selected from a plurality of spacers 17 having different lengths that match the size of the vertical gap between the counterweight 8 and the base 14 d of the support 14. For example, adjustment is performed so that the length of the spacer 17 provided to be extendable and contractible is equal to the dimension of the vertical gap between the counterweight 8 and the base 14 d of the support 14.

According to the fourth embodiment described above, the counterweight 8 is pulled up following the lifting of the lifting rope 19. At this time, only one lifting body 16 is required. Thus, the counterweight 8 can be pulled up with a simple configuration.

Embodiment 5 FIG.
FIG. 6 is a diagram for explaining a method of lifting a counterweight of an elevator according to the fifth embodiment. The same or corresponding parts as those of the second embodiment are denoted by the same reference numerals. The description of this part is omitted.

(A) of FIG. 6 shows one side of the support process, the other side of the support process, the gripping process, and a part of the first lifting process of the lifting process. In the one-side support step of the support step, the one-side support portion 14a of the support 14 supports one side of the lower part of the counterweight 8 supported by the weight buffer 10. In the other side support step of the support step, the other side support portion 14b supports the other side of the lower part of the counterweight 8 supported by the weight side buffer 10. In the gripping step, the pair of weight side guide rails 6 is gripped by the side of the counterweight 8. In a part of the first lifting step of the lifting stroke, the pair of gripping bodies 15 support the pair of lifting bodies 16 on the sides of the counterweight 8. One of the pair of lifting bodies 16 supports the one-side support portion 14a. The other of the pair of lifting bodies 16 supports the other-side support portion 14b.

(B) of FIG. 6 shows the connecting step of the supporting step. In the connecting step of the supporting step, the connecting part 14c of the support 14 connects the one-side supporting part 14a and the other-side supporting part 14b.

(C) of FIG. 6 shows a part of the first lifting process of the lifting process and an auxiliary process. In a part of the first lifting step of the lifting stroke, the pair of lifting bodies 16 is raised to the limit of the lifting margin. As a result, the counterweight 8 is raised. In the assisting step, the assisting body 20 penetrates the support 14 while being arranged at the bottom of the hoistway 1. The auxiliary body 20 supports the counterweight 8 from below.

(D) of FIG. 6 shows a step of lowering the lifting stroke. In the lowering step of the lifting process, the base 14d of the support 14 is connected to the one-side support 14a and the other-side support 14b below the connection 14c. Thereafter, the pair of lifting bodies 16 are pulled down to the limit. As a result, the support 14 is pulled down.

（(E) of FIG. 6 shows an arrangement process of the lifting stroke. In the disposing step, the spacer 17 is disposed so as to fill a vertical gap between the counterweight 8 and the base 14 d of the support 14.

(F) of FIG. 6 shows the second lifting step of the lifting stroke. In the second lifting step, the pair of lifting bodies 16 are raised to the limit of the lifting allowance. As a result, the counterweight 8 is raised. In this state, the auxiliary body 20 is extended so as to support the counterweight 8 from below. The pair of lifting bodies 16 are pulled down to the limit.

Then, if necessary, the steps of arranging the lifting stroke and the second lifting step shown in FIGS. 6E and 6F are repeated. At this time, the spacer 17 is set according to the size of the vertical gap between the counterweight 8 and the base 14 d of the support 14. For example, a spacer 17 is selected from a plurality of spacers 17 having different lengths that match the size of the vertical gap between the counterweight 8 and the base 14 d of the support 14. For example, adjustment is performed so that the length of the spacer 17 provided to be extendable and contractible is equal to the dimension of the vertical gap between the counterweight 8 and the base 14 d of the support 14.

According to the fifth embodiment described above, the auxiliary body 20 penetrates the support body 14 in a state where the auxiliary body 20 is disposed at the bottom of the hoistway 1. The auxiliary body 20 supports the counterweight 8 from below. For this reason, even if the brake cannot stop the rotation of the hoist 2, the downward movement of the counterweight 8 can be suppressed.

The auxiliary body 20 does not have to penetrate the support body 14. For example, a notch may be formed in the support 14 to avoid interference between the support 14 and the auxiliary body 20. For example, the auxiliary body 20 may be formed so as to avoid interference with the support 14.

Embodiment 6 FIG.
FIG. 7 is a diagram for explaining a method of lifting a counterweight of an elevator according to the sixth embodiment. The same or corresponding parts as those of the second embodiment are denoted by the same reference numerals. The description of this part is omitted.

(A) of FIG. 7 shows one side of the support process, the other side of the support process, the gripping process, and a part of the lifting process. In the one-side support step of the support step, the one-side support portion 14a of the support 14 supports one side of the lower part of the counterweight 8 supported by the weight buffer 10. In the other side support step of the support step, the other side support portion 14b of the support 14 supports the other side below the counterweight 8 supported by the weight side buffer 10. In the gripping step, the pair of weight side guide rails 6 is gripped by the side of the counterweight 8. In a part of the lifting process, the pair of holding bodies 15 support the pair of lifting bodies 16 on the sides of the counterweight 8. One of the pair of lifting bodies 16 supports the one-side support portion 14a. The other of the pair of lifting bodies 16 supports the other-side support portion 14b.

（(B) of FIG. 7 shows a part of the lifting process. In a part of the lifting stroke, one of the pair of lifting bodies 16 is raised to the limit of the lifting allowance. As a result, the counterweight 8 is raised.

（(C) of FIG. 7 shows a part of the lifting process. In a part of the lifting process, the spacer 17 is arranged so as to fill a vertical gap between the counterweight 8 and the other support portion 14b of the support 14.

(D) of FIG. 7 shows a part of the lifting process. In a part of the lifting stroke, the other of the pair of lifting bodies 16 is raised to the limit of the lifting margin. As a result, the counterweight 8 is raised.

（(E) of FIG. 7 shows a part of the lifting process. In a part of the lifting process, the pair of lifting bodies 16 are lowered to the limit. As a result, the one side support portion 14a of the support 14 is pulled down.

（(F) of FIG. 7 shows a part of the lifting process. In a part of the lifting process, the spacer 17 is arranged so as to fill a vertical gap between the counterweight 8 and the one-side support portion 14 a of the support 14. In this state, one of the pair of lifting bodies 16 is pulled up to the limit.

Then, if necessary, the steps of arranging the lifting process and the second lifting process shown in FIGS. 7E and 7F are repeated. At this time, the spacer 17 is set according to the size of the vertical gap between the counterweight 8 and the one-side support portion 14a or the other-side support portion 14b of the support 14. For example, a spacer 17 is selected from a plurality of spacers 17 having different lengths that match the size of the vertical gap between the counterweight 8 and the one-side support portion 14a or the other-side support portion 14b of the support 14. You. For example, adjustment is performed so that the length of the spacer 17 provided to be extendable and contractable is equal to the size of the vertical gap between the counterweight 8 and the one-side support portion 14a or the other-side support portion 14b of the support 14.

According to the sixth embodiment described above, in the support body 14, the one-side support portion 14a and the other-side support portion 14b are sequentially pulled up. For this reason, even if the brake cannot stop the rotation of the hoist 2, the downward movement of the counterweight 8 can be suppressed.

スペーサ A spacer may be added below the support 14. In this case, the lifting weight 16 may be connected to the lower part of the spacer to lift the counterweight 8. Also in this case, the counterweight 8 can be easily lifted.

As described above, the elevator lifting device and the lifting method according to the present invention can be used for an elevator system.

1 Hoistway, 2 hoist, 3 sheave, 4 main rope, 5 car side guide rail, 6 weight side guide rail, 7 car, 8 balance weight, 9 car side buffer, 10 weight side buffer, 11 controller, 12 jack, {13} lifting device, {14} support, {14a} one-side support, {14b} other-side support, {14c} coupling, {14d} base, {15} grip, {15a} grip, {15b} support, {16} lift, {17} spacer, 18 pulley, 19 lifting rope, 20 auxiliary

Claims

In an elevator including a basket and a counterweight supported by a main rope wound around a hoist, a support that supports a lower portion of the counterweight,
At the bottom of the hoistway of the elevator, a pair of grippers that respectively grip a pair of weight-side guide rails for guiding the counterweight on the sides of the counterweight,
A pair of lifting bodies that are respectively supported by the pair of gripping bodies on the sides of the counterweight and pull up the counterweight by pulling up the support;
Lifting device for the counterweight of an elevator equipped with
A spacer detachably provided between the counterweight and the support,
The lifting device for a counterweight of an elevator according to claim 1, further comprising:
The support is
A one-side support portion for supporting one side of a lower portion of the counterweight,
Another side support portion for supporting the other side of the lower portion of the counterweight,
A connecting portion detachably provided to the one-side support portion and the other-side support portion,
The lifting device for a counterweight of an elevator according to claim 1 or 2, further comprising:
The one-side support portion is vertically guided by one of the pair of weight-side guide rails,
The lifting device for an elevator counterweight according to claim 3, wherein the other-side support portion is vertically guided by the other of the pair of weight-side guide rails.
An elevator comprising a basket and a counterweight supported by a main rope wound on a hoist; a support body comprising at least one pulley and supporting a lower portion of the counterweight;
At the bottom of the hoistway of the elevator, a pair of grippers that respectively grip a pair of weight-side guide rails for guiding the counterweight on the sides of the counterweight,
A lifting body that is supported by one of the pair of grippers on the side of the counterweight,
A lifting rope that is wound around the at least one pulley, is connected to the other of the pair of gripping bodies and the lifting body, and lifts the counterweight by being lifted by the lifting body;
Lifting device for the counterweight of an elevator equipped with
An auxiliary body that supports the lifted counterweight from below, while being arranged at the bottom of the hoistway of the elevator,
The lifting device for a counterweight of an elevator according to any one of claims 1 to 5, further comprising:
In an elevator provided with a basket and a counterweight supported by a main rope wound around a hoist, one side supporting portion that supports a part of a lower portion of the counterweight and another side of a lower portion of the counterweight is supported. A support having an other-side support portion,
At the bottom of the hoistway of the elevator, a pair of grippers that respectively grip a pair of weight-side guide rails for guiding the counterweight on the sides of the counterweight,
A pair of lifting bodies that are respectively supported by the pair of gripping bodies on the sides of the counterweight and pull up the counterweight by pulling up the support;
A pair of spacers respectively provided detachably and elastically between the counterweight and the one-side support portion and between the counterweight and the other-side support portion,
Lifting device for the counterweight of an elevator equipped with
In an elevator provided with a basket and a counterweight supported by a main rope wound on a hoist, a supporting step of supporting a lower portion of the counterweight by a support,
At the bottom of the hoistway of the elevator, a pair of grippers, a gripping step of gripping a pair of weight-side guide rails for guiding the counterweight on the sides of the counterweight, respectively.
A lifting step of lifting the counterweight by pulling up the support, by supporting the pair of lifting bodies on the sides of the counterweight by the pair of grippers, respectively,
Lifting method of the counterweight of the elevator equipped with.
The lifting step,
By a jack arranged at the bottom of the hoistway of the elevator, a push-up step of pushing up the counterweight,
After the lifting step, the pair of grippers support the pair of lifting bodies on the sides of the counterweight, and the pair of lifting bodies pull up the support to raise the counterweight. Lifting process,
A lowering step of lowering the support by the pair of lifting bodies after the first raising step;
After the lowering step, an arrangement step of disposing a spacer between the counterweight and the support,
After the disposing step, a second lifting step of lifting the counterweight by lifting the support by the pair of lifting bodies,
The method for lifting a counterweight of an elevator according to claim 8, comprising:
The supporting step includes:
A one-side support step of supporting one side of the lower part of the counterweight by one-side support of the support,
Another side supporting step of supporting the other side of the lower part of the counterweight by the other side supporting portion of the support,
A connection step of connecting the one-side support portion and the other-side support portion by a connection portion of the support,
The method for lifting a counterweight of an elevator according to claim 8 or 9, further comprising:
The one-side supporting step includes a step of vertically guiding the one-side supporting portion of the support to one of the pair of weight-side guide rails,
The method of lifting a counterweight of an elevator according to claim 10, wherein the other-side supporting step includes a step of vertically guiding the other-side supporting portion of the supporter to the other of the pair of weight-side guide rails.
In an elevator provided with a basket and a counterweight supported by a main rope wound on a hoist, a supporting step of supporting a lower portion of the counterweight by a support,
At the bottom of the hoistway of the elevator, a pair of grippers, a gripping step of gripping a pair of weight-side guide rails for guiding the counterweight on the sides of the counterweight, respectively.
A winding step of winding a lifting rope around at least one pulley provided on the support;
One of the pair of grippers supports a lifting body on the side of the counterweight, and the lifting rope is connected to the other of the pair of grippers and the lifting body. A lifting step of lifting the counterweight by lifting a heavy rope,
Lifting method of the counterweight of the elevator equipped with.
An auxiliary step of supporting the lifted counterweight from below by an auxiliary body disposed at the bottom of the hoistway of the elevator;
The method of lifting a counterweight of an elevator according to any one of claims 8 to 12, comprising:
In an elevator equipped with a basket and a counterweight supported by a main rope wound around a hoist, one side support of a supporter supports one side of a lower portion of the counterweight, and the other of the supporter A supporting step of supporting the other side of the lower portion of the counterweight by a side support portion,
At the bottom of the hoistway of the elevator, a pair of grippers, a gripping step of gripping a pair of weight-side guide rails for guiding the counterweight on the sides of the counterweight, respectively.
By the pair of grippers, each of the pair of lifting bodies is supported on the side of the counterweight, and one of the pair of lifting bodies pulls up the one-side support portion of the support to raise the counterweight, A spacer is arranged between the counterweight and the other support portion of the support, and the other of the pair of lifting members pulls up the other support portion of the support to raise the counterweight, thereby supporting the support. Pulling down one side support of the body, disposing a spacer between the counterweight and one side support of the support, and lifting one side support of the support by one of the pair of lifting bodies. A lifting step of lifting the counterweight with
Lifting method of the counterweight of the elevator equipped with.