JPH0656372A - Elevator main rope extension detection device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an elevator main rope extension detection device that allows maintenance personnel to measure the extension of the main rope by one person. [Structure] An iron cover 12 for covering the upper part of the coil buffer 10 and an upper end of the coil buffer 10 and the cover 12
An expandable and contractible measuring device 11 which is attracted by the magnet 13 and extends upward is provided on the upper part, and the hanging distance when the tip of the counterweight hits the bottom of the counterweight 2 is measured to measure the amount of extension of the main rope. .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator main rope extension amount detecting device.

[0002]

2. Description of the Related Art Generally, when operating an elevator,
The clearance between the counterweight and the coil buffer must always maintain the specified value. However, the dimensions change because the main rope stretches over time due to the weight of the car and the counterweight.

Therefore, in order to measure the distance at any time, one maintenance staff member operates the elevator, and the other maintenance staff member enters the elevator pit for measurement.

[0004]

In the above-mentioned prior art, at least two persons, a maintenance person who measures the distance in the elevator pit and a maintenance person who stops the elevator car on the top floor, are required, and work efficiency is poor. There was a problem.

An object of the present invention is to provide a main rope extension amount detecting device for an elevator, which can be measured by one person.

[0006]

In order to achieve the above object, the distance between the bottom end of the counterweight and the coil buffer installed at the bottom of the pit or the distance between the bottom of the pit is measured, In an elevator main rope extension amount detection device for detecting the extension amount of the main rope, an iron cover that covers the upper portion of the coil buffer is attached to the upper end of the coil buffer, and a magnet is attracted to the upper portion of the cover, while moving upward. It is provided with a stretchable measuring device.

[0007]

[Operation] A telescopic measuring device that extends upward,
When the tip of the measuring device is provided at the upper end of the coil buffer and the tip of the measuring device hits the bottom of the counterweight and it shrinks, the maintenance staff measures the reduced drooping distance to enter the pit to measure the extension amount of the main rope.

As a result, one maintenance person can measure the amount of extension of the main rope, and work can be performed efficiently.

[0009]

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

In FIG. 1, 1 is a car, 2 is a counterweight, 3 is a main rope for connecting a car 1 and a counterweight 2, 4 is a suspension vehicle for driving the main rope 3, 5 is an elevator machine room, and 6 is Bottom floor hall, 7 top floor hall, 8 pit, 9 coil buffer for car 1, 10 coil buffer for counterweight 2, 11 expandable measuring device, 12 upper part of coil buffer for counterweight 2. An iron cover for covering 13; a magnet for adsorbing an expandable and contractible measuring device; l, a hanging distance between a counterweight 2 and a coil buffer 10 of a counterweight 2; 2 shows a maintenance person measuring the hanging distance of the coil buffer of No. 2.

Next, the operation will be described. In the coil buffer 10 of the balance weight 2, this coil buffer 10
A cover 12 that covers the upper part of the vehicle, and a magnet 13 is attached to the upper part of the cover 12 by a magnet 13 in a stretched state. Drive to the top floor 7. At this time, the lower end of the counterweight 2 is in contact with the cover 12 covering the upper part of the coil buffer 10 of the counterweight 2 and the expandable measuring device 11 provided by the magnet 13, so that the measuring device 11 is pushed down and contracted. Accordingly, the dimension indicated by the measuring device 11 is the hanging distance between the lower end of the counterweight 2 and the upper end of the coil buffer 10 of the counterweight 2. Next, the maintenance worker M drives the car 1 to descend, enters the pit 8 from the lowest floor 6, and reads the length l of the measuring device 11.

As described above, the length l is the hanging distance between the lower end of the counterweight 2 and the upper end of the coil buffer 10 of the counterweight 2, so that the main rope can be easily compared by comparing this dimension with the specified dimension. Can measure the amount of growth.

A coil buffer 1 having a counterweight 2
Since the height from the pit portion of 0 does not change, the same result can be obtained even if the measuring device 11 is configured to measure the hanging distance from the pit bottom portion.

[0014]

According to the present invention, the size of the counterweight and the coil buffer can be measured safely and easily by one maintenance worker.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a main rope extension amount detecting device for an elevator according to the present invention.

[Explanation of symbols]

 1 Cage 2 Counterweight 3 Main rope 8 Pit 10 Coil buffer for counterweight 11 Measuring device 12 Cover 13 Magnet M Maintenance staff l Drooping distance

Claims (1)

[Claims] 1. A main rope of an elevator for detecting the amount of extension of the main rope by measuring the distance between the bottom end of the counterweight and a coil buffer installed at the bottom of the pit or the bottom of the pit. In the elongation detection device, an iron cover that covers the upper portion of the coil buffer is provided at the upper end of the coil buffer, and a telescopic measuring device that is attracted by a magnet to the upper portion of the coil buffer and that extends upward is provided. Characteristic elevator main rope elongation detection device.