JP2000143112A - In-pit work floor device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an in-pit work floor device for an elevator which can perform work surely and efficiently even in the case of the columnar cylinder of an oil buffer. SOLUTION: This in-pit work floor device for an elevator is constituted of: a fitting rubber 10 provided on the outer periphery of an oil buffer 4, winding chains 11 for fixing the rubber 10 to the buffer 4, a fitting mount 12 fixed to the chains 11, a horizontal footboard 13 fixed to the mount 12, and a work floor 9 composed of a supporting leg 14 provided on the lower surface of the footboard 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a pit having a pit depth of 6 m.
The present invention relates to a work floor device in a pit of an elevator suitable for performing maintenance work on the high-rise elevator described above.

[0002]

2. Description of the Related Art Conventionally, in a high-rise elevator having a pit depth of 6 m or more, when performing maintenance work on equipment provided under a car, the car is pushed down until it collides with an oil buffer, and each time a scaffold is used. I was working with

[0003]

As described above, in the maintenance work for pushing down the car, since the limit switch is short-circuited by the short-circuiting time limiter, sufficient work time cannot be taken, and the maintenance work under the car is performed. There is a problem that it takes too much preparation time to perform the operation, and too much time for returning to operation after performing the maintenance work under the car.

Further, in the maintenance work for assembling the scaffold as described above, there are problems that the work time for assembling the scaffold is too long and the work cost is too high.

Moreover, in the oil buffer of the high-rise elevator, the cylinder of the oil buffer has a prismatic shape, and there is a problem that the mounting of the work floor becomes unstable.

An object of the present invention is to provide a work floor device in an elevator pit which can solve the above problems.

[0007]

An object of the present invention is to provide an oil buffer erected on the bottom of a pit, a work stage installed around the oil buffer, and an oil buffer located above the work stage, In an elevator pit working floor device provided with at least a working floor fixed to a buffer, the working floor includes a mounting rubber provided on an outer periphery of the oil buffer, and a wrapping fixing the mounting rubber to the oil buffer. This is achieved by including a chain, a mount fixed to the winding chain, a horizontal tread fixed to the mount, and support legs provided on the lower surface of the horizontal tread.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, an oil buffer 4 for a car 3, an oil buffer 5 for a counterweight, and a compens rope 7 wound around a compens pulley 6 are provided in a pit 2 of the elevator 1 with an oil buffer for the car 3. 4
And an oil buffer 5 for the counterweight.

The oil buffer 4 for the car 3 includes a cylinder 4A and a piston 4B inserted in the cylinder 4A.
And the outer shape of the cylinder 4A is a prismatic shape. The length of the cylinder 4A is about 3.8 m.
At a height of about 2.75m from the inner bottom 2A of the pit 2,
A work stage 8 for checking the oil buffer 4 is provided. The work stage 8 is provided only in the front part 2C in the pit 2, avoiding the rear part 2B in the pit 2 where the compensating rope 7 and the like are located.

A first work floor 9 is provided on the outer periphery of the upper end of the cylinder 4A of the oil buffer 4 for the car 3. The first work floor 9 includes a mounting rubber 10 provided on the outer circumference of the cylinder 4A, a winding chain 11 for fixing the mounting rubber 10 to the cylinder 4A, and a mounting base fixed to the winding chain 11. 12, a horizontal tread 13 fixed to the mounting base 12, and support legs 14 provided on the lower surface of the horizontal tread 13.

Below the first working floor 9, a second working floor 15 is provided. The second work floor 15 is configured such that the horizontal treads 13 and the support legs 14 of the first work floor 9 are set to be short, and the other has the same structure and the same functions as the first work floor 9. are doing. The second work floor 15 is also a rubber 1 for mounting.
It is fixed to the cylinder 4A via 0A. The mounting rubber 10A is fixed to the cylinder 4A by a winding chain 11A. The roller portion 14A provided at the tip of the support leg 14 of the first work floor 9 is provided with a rubber 1
Press to 0A. Below the mounting rubber 10A, the second
The mounting rubber 10B against which the roller portion of the support leg of the work floor 15 is pressed against is fixed to the cylinder 4A by the winding chain 11B. The mounting rubbers 10, 10A, 10B have the same structure. The winding chains 11, 11A and 11B have the same structure. The fixing positions of the mounting rubbers 10, 10A, and 10B to the cylinder 4A are located above the work stage 8, as shown in FIG.

A master rope 16 provided on a lifeline mounting bracket (not shown) provided on the car 3 hangs down in the pit 2 as shown in FIG. The lifeline 17 fixed to the worker A is fixed to the master line 16.

As shown in FIG. 2, the mounting rubber 10 has a two-part structure sandwiching the cylinder 4A of the oil buffer 4, and is made of natural rubber or the like, which is the same material as a vehicle tire.

The first work floor 9 is provided with a groove 12a of the mounting table 12.
The horizontal tread plate 13 is rotatable along. The horizontal tread 13 is formed of a steel material having a total length of 1.1 m, a width of 0.24 m, and a thickness of 0.03 m.

The work method using the work floor device having the above-described structure is as follows.
This is performed as follows.

(1) First, as in step S1 of FIG. 5, the car 3 of the elevator 1 is stopped at the lowest floor.

(2) Next, as shown in step S2 of FIG. 5, one worker A suspends the parent rope 16 from the car lifeline mounting bracket to the pit 2 on the car 3, Pit 2
To connect the lifeline 17 to the parent line 16, and another worker B goes to the pit 2 and prepares for the work for mounting the work floors 9 and 15 whose pit switches are shut off.

(3) Next, as shown in steps S3 and S4 of FIG. 5, the mounting rubbers 10, 10A, 10B
On the work stage 8, the winding chains 11, 11A,
At 11B, it is fixed to the outer periphery of the cylinder 4A.

(4) Next, as in steps S5 and S6 in FIG. 5, the first work floor 9 and the second work floor 1
5 is fixed on the outer periphery of the cylinder 4A on the work stage 8.

(5) Next, as in step S7 in FIG. 5, the fixed state of each component attached to the cylinder 4A is confirmed again.

(6) Thereafter, the worker A checks the equipment provided on the lower surface of the car 3 and the worker B assists the check.

When the inspection of the equipment provided on the lower surface of the car 3 is completed by working in the order of (1) to (6) above, the work floors 9, 15 and the like are removed from the cylinder 4A and the car 3
The operation of can be restored.

According to the working floor device in the pit of this embodiment, (a) the maintenance inspection under the car can be easily observed on the tread plate 13.

(B) Since the lifeline 17 is connected to the parent line 16, maintenance and inspection work under the car can be performed with ease.

(C) Even if the cylinder 14A is prismatic, the first working floor 9 and the second working floor 15 can be securely fixed by the mounting rubbers 10, 10A, 10B.

(D) Since the tread plate 13 can rotate in the circumferential direction of the cylinder 14A, the cylinder 1
By adjusting the position of the tread plate 13 after attaching the first work floor 9 to the 4A, it is possible to arrange the worker at an optimal position for performing maintenance and inspection under the car 3.

(E) According to the experiment, the work floor installation time was about 10 minutes, the work floor removal time was as short as about 7 minutes, and the maintenance and inspection work time under the whole car was 2 hours as compared with the conventional case. 4
It turned out that it could be shortened by 3 minutes.

[0029]

As described above, according to the present invention, a work floor device in an elevator pit is provided which enables maintenance and inspection of equipment under a car to be performed safely and efficiently.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory diagram of an overall configuration showing an embodiment of the present invention.

FIG. 2 is a perspective view of a mounting rubber.

FIG. 3 is a top view of a work floor.

FIG. 4 is a side view of a work floor.

FIG. 5 is a flowchart showing a work procedure of maintenance and inspection under the pit by the in-pit working device according to the embodiment.

[Explanation of symbols]

 Reference Signs List 1 elevator 2 pit 2A bottom inside pit 2B rear part inside pit 2C front part inside pit 3 car 4 oil buffer for car 4A cylinder 4B piston 5 oil buffer for counterweight 6 compens pulley 7 compens rope 8 work stage 9 first work floor 10 -10B Mounting rubber 11-11B Wrapping chain 12 Mounting base 12a Mounting base groove 13 Horizontal tread 14 Support leg 15 Second work floor 16 Parent line 17 Lifeline

Claims (5)

[Claims] 1. An oil buffer erected on the bottom of a pit, a work stage installed around the oil buffer, and a work floor located above the work stage and fixed to the oil buffer. In an elevator pit working floor device provided at least, the working floor includes a mounting rubber provided on an outer periphery of the oil buffer, a wrapping chain for fixing the mounting rubber to the oil buffer, and a wrapping chain. A work floor device in an elevator pit, comprising: a fixed mount, a horizontal tread fixed to the mount, and a support leg provided on a lower surface of the horizontal tread. 2. The mounting rubber according to claim 1, wherein the mounting rubber has a two-part structure sandwiching the oil buffer.
A work floor device in an elevator pit according to the above. 3. The work floor device in an elevator pit according to claim 1, wherein a plurality of the work floors are provided in the oil buffer. 4. The elevator according to claim 1, further comprising a main line to which a lifeline of a worker who performs the operation can be attached before starting the operation of providing the work floor in the oil buffer. Floor equipment in the pit. 5. The work floor device in a pit of an elevator according to claim 1, wherein a horizontal tread is provided on the mounting base so as to be movable in a circumferential direction of the oil buffer.