JPH09194155A - Test apparatus for elevator oil damper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate any danger resulting from hand-holding of a long element for safe testing, in a testing method of applying a frame body fitted under a car to the long element and testing the operation of an oil damper, by hanging the long element from the frame body and supporting it with a flexible element. SOLUTION: For the operational test of an oil damper mounted onto a pit, a car 1 is first lowered up to the lowest floor at a low speed. The first fitting member consisting of a rod 21 inserted in a through-hole in the lateral direction at the upper part of a square member 11 is fitted onto the square member 11, and the second fitting member consisting of U-shaped hardware 24 is fitted onto a frame body 12 respectively to lift up the square member 11. A flexible hook consisting of a spring member 28 is engaged with a hook hole 26, and a ring is engaged with the rod 21. When the car 1 rises at a low speed the square member 11 is also lifted. After the lower part of the square member 11 reaches the upper part of a plunger 8 and stops, the car 1 is lowered for operational test of the oil damper in the same way as a conventional one. A testing apparatus is then removed for completion of testing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator oil-filled shock absorber test apparatus suitable for an elevator oil-filled shock absorber.

[0002]

2. Description of the Related Art In an elevator, when a car or a counterweight falls on the bottom of a hoistway during an accident, it is necessary to receive them and stop them safely with an appropriate deceleration, as disclosed in Japanese Utility Model Publication No. Sho 49-20678. , Oil-filled shock absorbers are installed upright in the pit. If this oil-filled shock absorber does not work normally, it will lead to a serious accident, and therefore it is obliged to conduct an operation test once a year by law.

A conventional method for testing an oil-filled shock absorber will be described with reference to FIG. In the figure, 1 is a car provided in a hoistway 2, and 3 is a rope whose other end is fixedly mounted on a counterweight (not shown), and a sheave (not shown) is rotated to allow the rope to pass through the rope. The basket 1 moves up and down. Reference numeral 6 denotes an oil-filled shock absorber provided in the pit 5, a cylinder 7 having oil inside, a plunger 8 fitted to the cylinder 7 so as to be vertically slidable, and a return for returning the plunger 8 to this position. It is composed of a spring (not shown).

Next, a method of testing the operation of the oil-filled shock absorber 6 will be described. The worker 10 who has entered the pit 5 places a square bar 11 of 1.5 to 2.0 m on the upper surface of the plunger 8 and supports it by hand. Then, the frame body 12 arranged at the bottom of the car 1 or the counterweight is applied to the head of the square bar 11 to lower the car 1 or the counterweight, and the plunger 8 is lowered to the final stroke through the square bar 11. Let
After that, raise the basket 1 or the counterweight.
At this time, if the plunger 8 returns to the original position within a predetermined time (usually within 60 seconds), it is determined as a pass.

[0005]

In the above-mentioned prior art, the worker 10 supports the square bar 11 at a high position, which is the upper surface of the plunger 8, in an unstable state, which is very dangerous.

Further, since the oil-filled shock absorber 6 is provided directly below the car 1 or the counterweight, the worker 10 must also work directly below the car 1 or the counterweight, which is very dangerous in this respect as well. There was a problem.

In view of the above-mentioned drawbacks, an object of the present invention is to provide an elevator oil-filled shock absorber testing apparatus which is excellent in workability and safety.

[0008]

SUMMARY OF THE INVENTION A first object of the present invention is to:
A long body is placed above the plunger of the oil-filled shock absorber provided in the pit of the hoistway, and the frame provided at the bottom of the car or counterweight is applied to the long body, and the car is lowered or raised. In an elevator oil-filled shock absorber test apparatus that tests the operation of the oil-filled shock absorber by operating, the elongated body is provided near the frame body and is suspended by using a flexible body. Achieved by

A second object is to provide the elongated body with a first mounting tool and the frame body with a second mounting tool to hook the flexible body on the first and second mounting tools. This is achieved by adopting a hanging structure.

The third object is achieved by providing a fixture on the elongated body, winding the flexible body around the frame, and hooking both ends of the flexible body to the fixture to suspend the flexible body. It

The fourth object is achieved by the elongated body being a square bar.

The fifth object is achieved by the flexible body being a rope or a spring body.

According to the present invention, the car or the counterweight is lowered to the pit, and the elongated body, for example, a square member is suspended by a flexible body, for example, a rope or a spring, in the vicinity of the frame body of the car or the counterweight. After that, one end of the car or the counterweight is raised and stopped at the position where the lower part of the square bar reaches the upper part of the plunger of the oil-filled shock absorber. After that, the operation test of the oil-filled shock absorber can be performed by lowering the car or the counterweight at a low speed as in the conventional case.

As described above, since it is not necessary for the operator to manually support the timber, the operation test of the oil-filled shock absorber can be performed safely.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the invention will be described below with reference to FIG.
This will be described with reference to FIG.

FIG. 1 is an overall configuration diagram of an elevator oil-filled shock absorber test apparatus according to the present invention, and FIG. 2 is a detailed view of a main portion thereof. Note that the same reference numerals as those in FIG.

Reference numeral 20 denotes a first attachment, which is a rod body 21 inserted into a hole 19 which is formed in the upper portion of the square bar 11 and penetrates in the lateral direction.
Both ends of the rod body 21 are bent downward. The rod body 21 is fixed to the square bar 11 by a nut 22. Reference numeral 23 denotes a second attachment, which is a U-shaped metal fitting 24 and is fixed to the frame body 12 by a bolt 25. And, this metal fitting 24 has a hook hole 26
Is provided. Reference numeral 27 is a flexible body, which is composed of a spring body 28, and is provided with a hook 29 at one end and a ring 30 at the other end.
The hook 29 is configured to be hooked in the hook hole 26, and the ring 30 is configured to be hooked to the rod body 21.

Next, the operation of this embodiment will be described with respect to the oil-filled shock absorber 6 provided on the car 1 side.

First, the car 1 is lowered to the lowest floor by low speed operation. Then, the first attachment 20 is attached to the square member 11, the second attachment 23 is attached to the frame body 12, the square member 11 is lifted, the hook 29 of the flexible body 27 is set in the hook hole 26, and the ring 30 is set in the rod body. Hook 21.

Next, when the car 1 is raised at a low speed, the car 1
At the same time, the timber 11 is also lifted and stopped at the position where the lower portion of the timber 11 reaches the upper portion of the plunger 8. After that, the car 1 is lowered, the operation test of the oil-filled shock absorber 6 is performed, the test device is removed, and the test is completed as in the conventional case.

FIG. 3 is a detailed view of the essential parts of another embodiment. The second embodiment differs from the above embodiment in that the second fixture 23 is not used and the flexible body 27 is different. The flexible body 31 is composed of ropes 32 and rings 33 and 34. Then, the rope 32 is wound around the frame body 12, and the rings 33 and 34 are hooked on the rod body 21 of the first fixture 20.

Since this operation is the same as that described above, its description is omitted. The same operation is performed in the case of the oil-filled shock absorber on the counterweight side, and the description thereof will be omitted.

As described above, according to this embodiment, the timber 11
Is attached to the lower portion of the frame 12 of the car 1 in advance to perform the operation test of the oil-filled shock absorber 6, so that the worker 10 does not need to support the square bar 11 by hand, and therefore the car 1 of the car 1 is not required to perform the operation test. The operation test of the oil-filled shock absorber 6 can be performed safely without the need to go directly below. Further, since the worker 10 for supporting the square bar 11 by hand is unnecessary, there is an effect that the working cost can be reduced.

In this embodiment, the rectangular member 11 is used as the elongated member, but an iron pipe may be used. Although the spring body 28 and the rope 32 are used as the flexible body, it goes without saying that a string may be used.

Although it has been described that the first fixture 20 is attached to the square member 11 during the operation test, if it is attached in advance before the operation test, the work efficiency is further improved.

[0026]

As described above, according to the present invention, before the operation test of the oil-filled shock absorber, the elongated body is hung on the frame provided on the lower portion of the car or the counterweight.
Since an operator can perform an operation test without holding the long body by hand, the operation test of this oil-filled shock absorber can be safely performed, and the operation cost can be reduced. .

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an elevator oil-filled shock absorber test apparatus according to an embodiment of the present invention.

FIG. 2 is a detailed view of a main part of FIG. 1;

FIG. 3 is a detailed view of essential parts of another embodiment of the present invention.

FIG. 4 is an overall configuration diagram of a conventional oil-filled shock absorber test apparatus.

[Explanation of symbols]

 1 Car 2 Hoistway 5 Pit 6 Oil Buffer Buffer 8 Plunger 11 Square Bar 12 Frame 20 First Attachment 23 Second Attachment 27 Flexible Body 28 Spring Body 32 Rope

Claims (5)

[Claims] 1. A long body is arranged on an upper part of a plunger of an oil-filled shock absorber provided in a pit of a hoistway, and a frame body provided under a car or a counterweight is applied to the long body, In an elevator oil-filled shock absorber test apparatus that tests the operation of the oil-filled shock absorber by lowering or raising the car, the elongated body is installed near the frame body and suspended using a flexible body. A test apparatus for an oil-filled shock absorber for elevators, which is configured to be lowered. 2. The first attachment according to claim 1, wherein the elongated body is provided with a first attachment, and the frame is provided with a second attachment, and the flexible body is hooked on the first and second attachments. A test apparatus for an oil-filled shock absorber for elevators, characterized in that it is configured to be hung from the ground. 3. The mounting member according to claim 1, wherein the elongated member is provided with a mounting member, the flexible member is wound around the frame member, and both ends thereof are hooked on the mounting member and suspended. Equipment for testing oil-filled shock absorbers for elevators. 4. The test apparatus for an oil-filled shock absorber for an elevator according to claim 1, wherein the elongated body is a square bar. 5. The test device for an oil-filled shock absorber for an elevator according to claim 1, wherein the flexible body is a rope or a spring body.