JPS6216995A - Method of overhaul work of elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method for dismantling an existing elevator.

[Background of the invention]

Generally, when dismantling an elevator, after dismantling the seats and counterweight, a fixed scaffold known from Japanese Patent Publication No. 57-12793 is assembled in the hoistway, and piping and wiring in the hoistway is assembled. and remove the equipment,
They were also removing parts of the landing area.

However, when working using fixed scaffolding, as the target building became taller, the labor required for workers to ascend and descend increased, resulting in a significant decrease in work efficiency. There were also disadvantages, such as the fact that the work was carried out on scaffolding that had been assembled into parallel cross-sections, which was very dangerous.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator dismantling method that is safe, reduces worker fatigue, and significantly increases work efficiency, and eliminates the disadvantages of the fixed scaffolding method.

[Summary of the invention]

A feature of the present invention is that during elevator dismantling work, dedicated wiring is provided between the control panel and the car, an operating body is provided on the car side of this dedicated wiring for commanding the raising and lowering of the car, and then the counterweight is After reducing some of the weight of the car, removing the equipment, wiring, ceiling, side panels, etc. around the car, climb onto the remaining car and operate the above-mentioned operating body to raise and lower the car, and move the car up and down in the hoistway. After removing the equipment and landing parts, fix either the car or the counterweight on the lowest floor, and fix the other one on the top floor. : Lift with a lifting machine (winch or chain block, etc.), cut the elevator rope connecting the two, and finally lower the lifted counterweight or car to the lowest floor with a lifting machine. By dismantling the car or counterweight on the lowest floor and dismantling the mechanical indoor equipment (control panel, hoisting machine, governor, etc.) at the beginning of the work, fixed scaffolding work, etc. is no longer necessary. It's there.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

Figure 1 shows an elevator in the middle of the demolition process.
FIG. 2, which is an overall configuration diagram of the equipment, is a work process chart showing one work procedure of the demolition work method according to the present invention.

At Dowa, we first prepared for the demolition work (step 1 in Figure 2).
), connect the dedicated operating cable 3 to the elevator control panel 1 to perform demolition-only operation on the passenger and 2 sides, and attach this cable 30 to the dedicated operating body 4 on the passenger and 2 sides. The car 2 is brought into a state where it can be moved up and down using the dedicated operating body 4 (step 2). This dedicated operating body 4 is
It consists of an ascending operation command function, a descending operation command function, an emergency stop command function, a dedicated operation key switch, a buzzer, etc.

Next, the dedicated operating body 4 is operated to perform operation using the operating body 4, confirm the safety circuit, and confirm the operation of the emergency stop device (step 3).

Next, in order to reduce the difference in weight between the car 2 and the counterweight 5, a part of the counterweight 5 is removed (step 4).

Next, remove the equipment around the passenger car 2 (door opening/closing device, position detection device, etc.) and equipment wiring, and remove the side panels, ceiling, etc. of the passenger car 2, leaving the passenger car 2 with only the floor and frame (step 5). ).

Figure 1 shows the state after completing step 5, and the other components are 6 the hoist, 7 the governor, 8 the governor rope, 9 the elevator rope, 10 the guide rail, and 11 the The guide rail of the counterweight is shown.

Then, while riding on the disassembled car 2, the landing parts, hoistway equipment, and wiring are removed while the car 2 is being raised and lowered (steps 6 and 7).

Next, a special lifting machine (winch > 11 must be installed (step 8) is installed on the counterway) 5 (not shown), fixed to the bottom floor of the platform 2, and then the winch (not shown) is installed. ) to lift the counterweight 5 to the elevator rope 9
Lift it until it loosens (step 9). In this state, the elevator rope 9 is separated from the passenger seat 2, the counterweight 5 is lowered to the lowest floor, and the elevator rope 9 is removed (steps 10 and 11). After that, the rider 2 and counterweight 5 were disassembled, and the cable 3
Remove (step 12).

Next, the equipment in the machine room (control panel 1, hoist 6, governor 7, etc.) is dismantled (step 13), and the dismantling work is completed (step 14).

The above is an embodiment of the construction method according to the present invention. In this example, the dismantling of the machine room equipment is performed as the 13th work, but it may be performed simultaneously with the 10th work. Further, in the ninth work, the car 2 is fixed and the counterweight 5 is lifted, but the reverse may be used.

In particular, in this embodiment, the worker can work while riding on the elevator car 2 with the elevator safety device installed, so the worker can work with peace of mind without the danger of falling accidents.

Also, since you can move to the work position by riding on the car 2,
There is no need to use stairs or scaffolding to go up and down, which can significantly reduce worker fatigue.

Furthermore, since the car 2 can be stopped at a position suitable for the work position, a stable working posture can be obtained, and the work can be performed not only safely and without fatigue, but also efficiently.

Furthermore, since fixed scaffolding is not required, there is no need to assemble and dismantle scaffolding, and from this point of view as well, work efficiency can be improved. Furthermore, since the work is performed inside an existing building, there is a risk of damaging finished walls etc. if the scaffolding assembly and disassembly work 7 is performed, but since this work is eliminated, there is no risk of damage.

〔Effect of the invention〕

According to the construction method of the present invention, the control function of the elevator can be used to climb up and down the car and work, thereby eliminating the need for the conventional assembly and disassembly of fixed scaffolding, as well as going up and down. Therefore, the dismantling work becomes easy and the elevator can be dismantled safely and very efficiently.

[Brief explanation of drawings]

Fig. 1 is an overall configuration diagram of an elevator showing a state in the middle of work using a demolition work method according to an embodiment of the present invention, and Fig. 2 shows a work procedure of a demolition work method according to the present invention. FIG. 1...control panel, 2...car, 3...
...Operation cable, 4...Special operation body, 5
... Counterweight, 6 ... Hoisting machine, 7 ... Governor, 8 ... Governor rope, 9 ... Elevator loaf', 10.11・
...Guide rail. Figure 1 Figure 2

Claims (1)

[Claims] 1. An elevator dismantling method characterized in that the elevator dismantling work is carried out in the following process order. (b) A process in which dedicated wiring is installed between the elevator control panel and the car, and an operating body is installed on the car side of this dedicated wiring to command the elevator car to move up and down. (b) Work process to reduce part of the weight of the counterweight. (c) Work process for removing equipment, wiring, ceiling and side panels around the car. (d) After the completion of the removal work step, a work step of getting on the remaining car, operating the operating body to raise and lower the car, and removing equipment in the hoistway and landing parts. (e) A work process in which either the car or the counterweight is fixed to the bottom floor, the other is hoisted from the top floor using a lifting machine, and the elevator rope connecting the two is cut. (f) Lowering the counterweight or car hoisted to the top floor to the bottom floor using a lifting machine, dismantling the car or counterweight on the bottom floor, and dismantling the mechanical indoor equipment. A process consisting of work.