WO2023175881A1

WO2023175881A1 - Installation method for hoisting machine

Info

Publication number: WO2023175881A1
Application number: PCT/JP2022/012553
Authority: WO
Inventors: 浩基葛城; 隆博西野; 悠人樋野
Original assignee: 株式会社日立ビルシステム; 株式会社日立製作所
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2023-09-21
Also published as: CN117836228A

Abstract

This installation method for a hoisting machine comprises the steps described in (1) to (3) below. (1) A step for erecting guide rails in a hoistway. (2) A step for attaching lifting equipment to the tops of the guide rails in the vertical direction. (3) A step for lifting a hoisting machine unit by means of the lifting equipment attached to the guide rails.

Description

How to install a hoist

The present invention relates to a method for installing a hoist.

An example of an elevator is a machine room-less elevator that does not have a machine room at the top of the hoistway. BACKGROUND ART In recent years, in machine room-less elevators, a hoisting machine is sometimes installed on a guide rail that guides the raising and lowering of a car and a counterweight. Generally, a lifting machine is installed at the top of the hoistway, and the hoist is lifted to the top of the hoistway by this hoisting machine.

In addition, if the gap between the top of the hoist and the ceiling of the hoistway is extremely narrow, the hoist cannot be fixed to the guide rail with only the lifting machine installed at the top of the hoistway, and the hoist can be suspended at the top of the hoistway. It was necessary to replace it and lift it further. In that case, it is necessary to add a lifting machine installation position to the ceiling of the hoistway. As a technique for rehanging the hoist and fixing the hoist to the upper part of the guide rail, for example, there is a technique as described in Patent Document 1.

Patent Document 1 discloses that after a hoisting device is installed near the ceiling of a hoistway, and a hoisting machine unit having a hoisting machine and a guide member slidably engaged with a guide rail on the counterweight side is assembled. , includes a lifting step of hoisting the hoist unit to the top of the counterweight side guide rail while guiding it to the counterweight side guide rail using a lifting device.

JP 2018-8805 Publication

However, with the technology described in Patent Document 1, when the hoisting machine is lifted to the top of the hoistway, it is necessary to change the installation position of the hoisting machine, and it is necessary to suspend the hoisting machine from the ceiling of the hoistway. The problem was that a new hook had to be installed. Furthermore, if a new hanging hook cannot be installed, the installation work of the hoist becomes very complicated.

The present purpose is to provide a hoisting machine installation method that takes the above-mentioned problems into consideration and can improve work efficiency during hoisting machine installation.

In order to solve the above problems and achieve the purpose, a method for installing a hoisting machine includes the steps (1) to (3) below.
(1) The process of installing guide rails in the hoistway.
(2) A process of attaching a lifting device to the upper end of the guide rail in the vertical direction.
(3) The process of lifting the hoisting machine unit using a lifting machine attached to the guide rail.

According to the method for installing a hoisting machine having the above configuration, it is possible to improve work efficiency when installing a hoisting machine.

It is a side view of the hoistway showing the installation position of the hoist in the elevator concerning the example of an embodiment. It is a top view of a hoistway. It is a flowchart which shows the installation method of the hoisting machine concerning the example of embodiment. It is a front view which shows the upper end part of the guide rail in the installation method of the hoisting machine concerning the example of embodiment. FIG. 2 is a front view showing a state in which the hoist is lifted to a predetermined position in the hoist installation method according to the embodiment. It is a front view which shows the upper end part of the guide rail concerning a modification. 7 is a front view showing a state in which the hoist is lifted to a predetermined position using the guide rail shown in FIG. 6. FIG.

Hereinafter, a method for installing a hoisting machine according to an embodiment will be described with reference to FIGS. 1 to 7. Note that common members in each figure are given the same reference numerals.

1. Embodiment 1-1. Installation position of the hoisting machine First, the installation position of the hoisting machine installed by the hoisting machine installation method according to the embodiment example (hereinafter referred to as "this example") is shown in FIG. 1, FIG. 2, FIG. This will be explained with reference to FIG.
FIG. 1 is a side view of the hoistway, and FIG. 2 is a plan view of the hoistway.

As shown in FIG. 1, the elevator of this example is a so-called machine room-less elevator in which no machine room is provided at the top of the hoistway 50 formed within the building structure. As shown in FIGS. 1 and 2, inside the hoistway 50, there are a pair of car-

side guide rails

40 and 41 that guide the car, a pair of weight-side guide rails 42 that guide a counterweight (not shown), 43 are erected.

Further, as shown in FIG. 2, a plurality of

rail brackets

30, 31, and 32 are installed in the hoistway 50. The first rail bracket 30 and the second rail bracket 31 are installed on the first inner wall 51 of the hoistway 50, and the third rail bracket 32 is installed on the second inner wall 52 of the hoistway 50. The first inner wall 51 and the second inner wall 52 face each other in the left-right direction when viewing the hoistway 50 from the hall side where people and cargo enter and exit.

Further, during the installation work of the hoist unit 1, a work scaffold or a temporary work floor is installed in the hoistway 50 in the space 10 where the car is installed. Various tasks are performed on this work scaffold or temporary work floor. Therefore, it is extremely difficult to lift the hoist unit 1 to the top of the hoistway using the space 10. Note that the space 10 is arranged between the first inner wall 51 and the second inner wall 52.

The first rail bracket 30 and the second rail bracket 31 are spaced apart from each other on the first inner wall 51 in the front-rear direction, which is orthogonal to the up-and-down direction and the left-right direction of the car. A first weight-side guide rail 42 is fixed to the first rail bracket 30. A second weight-side guide rail 43 and a first car-side guide rail 40 are fixed to the second rail bracket 31 . A second car-side guide rail 41 is fixed to the third rail bracket 32. Further, the hoist unit 1 passes between the first weight-side guide rail 42 and the second weight-side guide rail 43 and is lifted to the top of the hoistway 50.

Note that by fixing two guide rails, the second weight-side guide rail 43 and the first car-side guide rail 40, to the second rail bracket 31, the space occupied by the rail brackets in the hoistway 50 can be reduced. This makes it possible to downsize the hoistway 50.

FIG. 4 is a front view showing the upper end of the guide rail.
As shown in FIG. 4, a hanging hook 55 is provided on the ceiling of the hoistway 50 to hang a main lifting machine (not shown). Further, a first hanging hole 61a is formed at the upper end of the first car-side guide rail 40 in the vertical direction. Similarly, a second hanging hole 61b is formed at the upper end of the first weight-side guide rail 42 in the vertical direction.

FIG. 5 is a front view showing a state in which the hoist is lifted to a predetermined position.
As shown in FIG. 5, a first lifting device 62a is installed in the first hanging hole 61a of the first car-side guide rail 40. Further, a second lifting device 62b is installed in the second hanging hole 61b of the first weight-side guide rail 42.

Next, the configuration of the hoist unit 1 will be described with reference to FIG. 5.
The hoist unit 1 includes a hoist main body 2, a machine beam 3, and a vibration isolating member 4. The hoist main body 2 is installed on the upper part of the machine beam 3 via a vibration isolating member 4. The machine beam 3 is arranged between a first weight-side guide rail 42 and a second weight-side guide rail 43. In this way, by housing the machine beam 3 within the two

main guide rails

42 and 43, it becomes possible to install the hoist main body 2 on the machine beam 3 in advance at the lower part of the hoistway 50.

Further, on the side surface of the hoisting machine main body 2, that is, on the side surface facing the first weight-side guide rail 42, the second weight-side guide rail 43, and the first car-side guide rail 40, a hoisting machine side suspension is provided.

Brackets

60a, 60b are provided. A first lifting machine 62a is connected to the first hoisting machine side hanging bracket 60a, and a second lifting machine 62b is connected to the second hoisting machine side hanging bracket 60b.

1-2. How to Install the Hoist Next, a method for installing the hoist unit 1 will be described with reference to FIGS. 3 to 5.
FIG. 3 is a flowchart showing a method for installing a hoist.

As shown in FIG. 3, an operator first carries products such as the hoist main body 2, machine beam 3,

guide rails

40, 41, 42, 43, etc. to the lower part of the hoistway 50 (step S11). Next, the operator attaches the guide rails 40, 41, 42, 43 to the

rail brackets

30, 31, 32, and stands the guide rails 40, 41, 42, 43 on the hoistway 50 (step S12). Then, the operator positions the guide rails 40, 41, 42, and 43 (step S13).

Next, the operator assembles the hoist main body 2 and the machine beam 3 at the lower part of the hoistway 50 (step S14). That is, the hoist main body 2 is installed above the machine beam 3 via the vibration isolating member 4. Thereby, the hoisting machine unit 1 as shown in FIG. 3 can be assembled. Further, by assembling the hoist main body 2 and the machine beam 3 in advance at the lower part of the hoistway 50, it is possible to reduce work at high places and improve safety.

Next, a main lifting machine (not shown) is suspended from the hanging hook 55 shown in FIGS. 4 and 5, and the hoist unit 1 is lifted to near the top of the hoistway 50 using the main lifting machine (step S15). ). At this time, a guide device that holds the hoist unit 1 and slidably engages with the weight

side guide rails

42 and 43 may be attached to the hoist unit 1. This can prevent the hoist unit 1 from shaking and coming into contact with the inner wall of the hoistway 50 or other equipment.

As shown in FIG. 5, when the hoisting machine unit 1 is lifted to near the top of the hoistway 50, the operator performs a repositioning operation of the hoisting machine (step S16). That is, the worker suspends the first lifting machine 62a in the first hanging hole 61a of the first car side guide rail 40, and suspends the second lifting machine 62b in the second hanging hole 61b of the first weight side guide rail 42. Lower it. Then, the first lifting machine 62a is connected to the first hoisting machine side hanging bracket 60a of the hoisting machine unit 1, and the second lifting machine 62b is connected to the second hoisting machine side hanging bracket 60b of the hoisting machine unit 1. do.

Also, the connection between the main lifting machine and the hoisting machine unit 1 is released, and the main lifting machine is removed from the hanging hook 55. Thereby, the main lifting machine is removed from above the hoisting machine unit 1, so that sufficient space can be secured between the hoisting machine unit 1 and the top of the hoistway 50.

Next, the operator lifts the hoisting machine unit 1 to a predetermined installation position using the first lifting machine 62a and the second lifting machine 62b attached to the guide rails 40 and 42 (step S17). In addition, by lifting the hoist unit 1 using the two

lifting machines

62a and 62b, the hoist unit 1 can be lifted to a predetermined installation position in a stable state, and the work when installing the hoist unit 1 can be carried out. Efficiency can be improved.

Next, the machine beam 3 is installed on the weight side guide rails 42, 43, and the hoist unit 1 is installed on the top of the hoistway 50, that is, the weight side guide rails 42, 43 (step S18). By performing such steps, the installation work of the hoisting machine unit 1 is completed.

As described above, according to the hoisting machine installation method of this example, by attaching the

hoisting machines

62a and 62b to the guide rails 40 and 42, there is no need to newly provide a hanging hook at the top of the hoistway 50. Thereby, the hoisting machine can be installed without processing the hoistway 50, so the hoisting machine can be installed without depending on the structure of the building structure. As a result, work efficiency during installation of the hoist can be improved.

2. Modification Example In the above-described embodiment, an example in which the hanging

holes

61a and 61b are formed at the upper end portions of the first car-side guide rail 40 and the first weight-side guide rail 42 has been described, but the present invention is not limited to this. It's not a thing. Next, a modification of the method for hanging the

lifting machines

62a and 62b will be described with reference to FIGS. 6 and 7.
FIG. 6 is a front view showing the upper end of the guide rail according to the modified example, and FIG. 7 is a front view showing a state in which the hoist is lifted to a predetermined position using the guide rail shown in FIG. 6. .

As shown in FIG. 6, a first hanging bracket 63a is removably installed at the upper end of the first car-side guide rail 40B in the vertical direction. Similarly, a second hanging bracket 63b is removably installed at the upper end of the first weight-side guide rail 42B in the vertical direction. As shown in FIG. 7, a first lifting machine 62a is attached to the first hanging bracket 63a, and a second lifting machine 62b is attached to the second hanging bracket 63b.

Then, the hoist unit 1 is lifted to a predetermined installation position by the first lifting machine 62a attached to the first hanging bracket 63a and the second lifting machine 62b attached to the second hanging bracket 63b.

In this way, according to the method for hanging the

lifting machines

62a, 62b according to the modification, it is possible to save the effort of forming the hanging

holes

61a, 61b in the guide rails 40B, 42B. Therefore, the

lifting machines

62a and 62b can be installed without designing a new guide rail. Furthermore, since the hanging

brackets

63a, 63b are detachably attached to the guide rails 40B, 42B, they can be removed from the guide rails 40B, 42B after the installation work of the hoisting machine. Thereby, the hanging

brackets

63a and 63b can be used as temporary construction materials, and can be used not only for new elevators but also for renewal work of existing elevators.

Note that the present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the gist of the invention as set forth in the claims.

In addition, in the embodiment described above, an example was explained in which the hoisting machine is lifted using the main lifting machine attached to the hanging hook 55 up to the vicinity of the top of the hoistway 50, but the invention is not limited to this. . The

hoisting machines

62a and 62b are attached to the guide rails from a state where the hoisting machine is at the bottom of the hoistway 50, and the

hoisting machines

62a and 62b are used to lift the hoisting machine from the bottom of the hoistway 50 to a predetermined installation position. Good too. Thereby, the work of replacing the lifting machine shown in FIG. 3 can be omitted, and work efficiency can be further improved. Further, since it is not necessary to provide the hanging hook 55 in the hoistway 50, the hoist can be installed without depending on the structure of the building structure.

Furthermore, although an example has been described in which the hoisting machine

side hanging brackets

60a and 60b are provided on the side surface of the hoisting machine main body 2, the present invention is not limited to this. For example, a hoisting machine side hanging bracket may be provided on the upper part of the hoisting machine main body 2 or on the machine beam 3.

In addition, although words such as "parallel" and "orthogonal" are used in this specification, these do not mean strictly "parallel" and "orthogonal", but include "parallel" and "orthogonal". , and may also be in a "substantially parallel" or "substantially perpendicular" state within the range where the function can be achieved.

1... Hoisting machine unit, 2... Hoisting machine main body, 3... Machine beam, 4... Vibration isolating member, 30, 31, 32... Rail bracket, 40, 40B... First car side guide rail, 41... Second car Side guide rail, 42, 42B...first weight side guide rail, 43...second weight side guide rail, 50...hoistway, 51...first inner wall, 52...second inner wall, 55...hanging hook, 60a, 60b... Hoisting machine side hanging bracket, 61a, 61b...hanging hole, 62a, 62b...lifting machine, 63a, 63b...hanging bracket

Claims

A process of erecting a guide rail on the hoistway,
a step of attaching a lifting device to the upper end of the guide rail in the vertical direction;
Lifting the hoisting machine unit by the hoisting machine attached to the guide rail;
How to install the hoist including.
The method for installing a hoisting machine according to claim 1, wherein a hanging hole for suspending the hoisting machine is formed in an upper end of the guide rail.
The hoisting machine installation method according to claim 1, wherein a hanging bracket from which the hoisting machine is suspended is detachably attached to the upper end of the guide rail.
The hoisting machine installation method according to claim 1, wherein a hoisting machine side hanging bracket connected to the hoisting machine is provided on a side surface of the hoisting machine unit.
The hoisting machine installation method according to claim 1, wherein the hoisting machine unit is provided with a guide device that slidably engages with the guide rail.