JP2016079002A - Method for lifting elevator equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for lifting elevator equipment, in which a weight object such as a hoist can be easily lifted to a machinery room by using a simple work process when carrying out renewal construction of an elevator.SOLUTION: A method for lifting elevator equipment of the present invention, in carrying out renewal construction of an elevator, includes the steps of: installing a carry-in device 9 at a hoistway 6 and a top floor entrance 10; lifting a new hoist 8 by using a chain block 12 mounted to the carry-in device 9; carrying-in the hoist 8 to the hoistway 6 by using an electric chain block 3 mounted in a machinery room 1 at an apex of the hoistway 6 and the chain block 12; adjusting a direction of the hoist 8 by removing the chain block 12 from the hoist 8; and lifting the hoist 8 to the machinery room 1 by using the electric chain block 3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lifting method for lifting an elevator device such as a hoisting machine from a predetermined floor to a machine room at the top of a hoistway when renovating an elevator.

  When building a new building, lifting the elevator equipment to the machine room provided at the top of the hoistway can be easily performed with a crane installed in the upper part of the building. However, when renovating existing elevator equipment that has deteriorated over time, the crane has already been removed from the building, so the relatively lightweight elevator equipment can be manually moved to the machine room by using stairs. I am trying to carry it. In addition, since heavy equipment such as hoisting machines cannot be carried in manually among elevator equipment, lift to the roof of the building with a crane truck, or assemble a lifting device on the stairs of the building and lift it to the machine room. ing. However, these lifting methods have many restrictions such as that it is not possible to secure the working space of the crane truck, and it is not possible to secure the lifting space on the building stairs and the strength of the stairs.

  Therefore, conventionally, elevator equipment such as a hoisting machine is placed on the floor of a passenger car stopped at the lowest floor, and one end of a rope suspended in the hoistway from the opening of the machine room floor is fixed to the elevator equipment. After that, a renewal construction method has been proposed in which the rope is driven by a rope driving device installed in the machine room to lift the elevator equipment and lift it to the machine room (for example, Patent Document 1). reference).

Japanese Patent Laid-Open No. 9-20482

  The elevator apparatus lifting method described in Patent Document 1 is a method of lifting an elevator apparatus such as a hoisting machine with the floor surface of a car as a work floor and then lifting the elevator apparatus to a machine room by a rope. However, after disassembling the existing car, it was necessary to remove the parts other than the floor and open the top of the car, so there was a problem that these operations took a lot of work and time. . In addition, the elevator position of the elevator equipment is on the lowest floor, and it is necessary to lift the elevator equipment from there to the machine room, which increases the lifting distance of the elevator equipment and takes time. There was also.

  The present invention has been made in view of such a state of the art, and an object of the present invention is to lift a heavy object such as a hoisting machine to a machine room easily in a simple work process when renovating an elevator. An object of the present invention is to provide a lifting method for elevator equipment.

  In order to achieve the above object, according to the present invention, an elevator device that lifts an elevator device carried into a hoistway from a predetermined floor to a machine room provided at the top of the hoistway when the elevator is renewed. In this lifting method, after installing a loading device in the hoistway and at the top floor landing, this loading device carries elevator equipment from the top floor into the hoistway and lifts it to the machine room. It is said.

  According to the lifting method of an elevator apparatus of the present invention, it is possible to carry out heavy work even if the elevator car is renewed without the need to dismantle the car or install a special scaffolding material or scaffolding plate in the hoistway. An elevator device such as a hoist can be easily lifted up to the machine room by a simple work process. Problems, configurations, and effects other than those described above will become apparent from the following description of embodiments.

It is a block diagram which shows the principal part of the elevator system with which the lifting method which concerns on the example of embodiment of this invention is applied. It is a perspective view which shows the process of installing a carrying-in apparatus with the lifting method which concerns on the example of embodiment. It is a perspective view which shows the process of lifting a heavy article with the carrying-in apparatus of FIG. It is a perspective view which shows the process of carrying in the heavy article of FIG. 3 in a hoistway. It is a perspective view which shows the state just before conveying the heavy article of FIG. 4 to a machine room. It is a perspective view which shows the state in the middle of conveyance of the heavy article of FIG. 5 to a machine room.

  An embodiment of the invention will be described with reference to the drawings. As shown in FIG. 1, an elevator to be renewed is provided with a machine room 1 at the top of a hoistway 6 in which a car 11 is raised and lowered. An opening 5 is provided between the support beams of the existing hoisting machine on the floor of the chamber 1.

  In the renewal work, the existing hoisting machine, control panel, and the like, which are elevator equipment, are removed from the machine room 1, and then the gate-type heavy lifter 2 is installed in the machine room 1. For example, an electric chain block 3 is provided as a second lifting device in the gate-type lifting work 2, and a new elevator device, for example, a hoisting machine 8, which is a heavy object, is fixed to the tip of the chain 4 of the electric chain block 3. Has been. Further, a carry-in device 9 is installed in the hoistway 6 and the top floor landing 10, and this carry-in device 9 is provided with, for example, a chain block 12 as a first lifting device, and is also wound around the end of the chain 13 of the chain block 12. Upper machine 8 is fixed. Hereinafter, based on FIGS. 2-6, the operation | work process which conveys the hoisting machine 8 from the top floor landing 10 to the machine room 1 by these two lifting devices (electric chain block 3 and chain block 12) is demonstrated.

  First, as shown in FIG. 2, the carry-in device 9 is installed in the hoistway 6 and the top floor hall 10. The carry-in device 9 includes a support member 9b fixed between the elevator guide rails 7 in the hoistway 6, an extendable column 9c erected on the floor surface of the uppermost landing 10, and the support member 9b. The lifting beam 9a is fixed to the upper part of the column 9c, and the pulley 9d is routed through the chain 4 of the electric chain block 3.

  The procedure for installing the carry-in device 9 configured as described above will be described. First, an operator gets on the car 11 moved downward from the top floor, and the car 11 is held using a holder such as a suspension wire. After fixing, the main rope (not shown) that holds the car 11 is removed. After that, the support material 9b is fixed between the elevator guide rails 7 facing each other on the car 11, and the support column 9c is erected on the floor surface of the uppermost landing 10, and then the support material 9b and the upper part of the support column 9c. The lifting beam 9a is fixed to the frame. At that time, since the column 9c can be expanded and contracted so that the entire length can be changed, the lifting beam 9a is adjusted to be horizontal by expanding and contracting the column 9c. Finally, the beam clamp 14 and the chain block 12 are attached to the lifting beam 9a, and the installation process of the carry-in device 9 is completed by these operations.

  Next, as shown in FIG. 3, the chain 13 of the chain block 12 is connected to a hole (not shown) provided at the top of the hoisting machine 8, and the chain block 12 is operated in this state, thereby 8 is lifted from the floor of the top floor hall 10.

  Next, as shown in FIG. 4, the chain 4 of the electric chain block 3 provided in the gate-type lifting worker 2 in the machine room 1 is suspended so as to reach the top floor landing 10, and then the chain 4 is wound. Connect to the top of the upper unit 8. Thereafter, by operating both the electric chain block 3 and the chain block 12, the hoisting machine 8 is carried into the hoistway 6 from the top floor landing 10. At that time, if the strength of the support material 9b is not problematic with respect to the load of the hoisting machine 8, the beam clamp 14 is changed to a trolley, and the trolley is moved by using the lifting beam 9a as a rail. The machine 8 may be carried into the hoistway 6.

  Next, as shown in FIG. 5, when the hoisting machine 8 carried into the hoistway 6 reaches a position where it can be suspended only by the chain 4 suspended from the machine room 1, the chain provided on the lifting beam 9a. The chain 13 of the block 12 is removed from the hoisting machine 8. After that, as a preparation stage for lifting the hoisting machine 8 to the machine room 1, the hoisting machine 8 is properly oriented so that the hoisting machine 8 does not come into contact with the support material 9b when the hoisting machine 8 is raised to the machine room 1. Adjust to a proper posture.

  Next, as shown in FIG. 6, the hoisting machine 8 is lifted by operating the electric chain block 3 in the machine room 1, and the hoisting machine 8 is lifted as it is to pass through the opening 5 to pass through the machine room 1. Transport to. At that time, by removing the lifting beam 9a from the support material 9b and the support column 9c and closing the top floor 10 doors, it is not necessary to arrange the worker as a guard, so the worker is engaged in other work. It becomes possible to make it.

  Note that when removing the removed product from the machine room 1, the work process shown in FIG. 2 to the work process shown in FIG. 6 may be performed in reverse order.

  As described above, according to the elevator apparatus lifting method according to the present embodiment, a special scaffolding material or a scaffolding plate is combined in the hoistway 6 without having to bother to dismantle the car 11. Even if it is not provided, the elevator equipment (for example, the hoisting machine 8), which is a heavy object, can be easily lifted up to the machine room by a simple work process. Therefore, in the renewal work of the elevator, which takes time and effort in the prior art, in the present embodiment example, it is possible to reduce the construction man-hours and the construction cost.

1 Machine room 2 Gate-type lifting 3 Electric chain block (second lifting device)
4 Chain 5 Opening 6 Hoistway 7 Elevator Guide Rail 8 Hoisting Machine (Elevator Equipment)
DESCRIPTION OF SYMBOLS 9 Carry-in apparatus 9a Lifting beam 9b Support material 9c Support | pillar 9d Pulley 10 Top floor landing 11 Car 12 Chain block (1st lifting apparatus)
13 Chain 13
14 Beam clamp

Claims (3)

In the elevator renewal work, in the lifting method of the elevator equipment that lifts the elevator equipment carried into the hoistway from a predetermined floor to the machine room provided at the top of the hoistway,
After installing the loading device in the hoistway and on the top floor landing, the loading device lifts the elevator equipment into the hoistway from the top floor and lifts it to the machine room. Heavy method.   The elevator apparatus lifting method according to claim 1, wherein the carry-in device is erected on a support material fixed between elevator guide rails facing each other in the hoistway and a floor surface of the uppermost landing. A lifting method for an elevator apparatus, comprising: a support column; a lifting beam horizontally supported by the support member; and a lifting device provided on the lifting beam.   In the lifting method of the elevator apparatus according to claim 1, the step of installing the carry-in device in the hoistway above the car and the top floor landing, and the first lift device provided in the carry-in device A step of lifting an elevator device, a step of bringing the elevator device into a hoistway by means of a second lifting device and a first lifting device provided in the machine room, and from the elevator device to the first Lifting the elevator equipment, comprising: removing the lifting device and adjusting the orientation of the elevator equipment; and lifting the elevator equipment to the machine room by the second lifting equipment. Method.