JPH0769563A - How to adjust the main rope tension of an elevator - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a method for adjusting the main rope tension of an elevator that allows the nut to be tightened with a light force when adjusting the tension of the main rope. [Constitution] When adjusting the tension of the main rope 6, the upper frame 3
A support body 22 extending upward is attached to the side of the bar 22, and a bar 24 extending through the lower hollow portion 8A of the shackle socket 8 is rotatably provided on the support body 22. Push down to move the thimble rod 7 downward to loosen the tension spring 10, and in this state, the nuts 11A, 11 provided on the lower end of the thimble rod 7
How to adjust the tension of the main rope by tightening B.

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 tension adjusting method.

[0002]

2. Description of the Related Art Usually, a main rope of an elevator is made up of a plurality of thin wires, one end of which is attached to a car-side upper frame and the other end of which is attached to a counterweight upper frame. There is. Further, the attachment to the upper frame body is performed by a thimble rod having a tension spring provided below the suspension plate provided on the upper frame body.

[0003] The main rope is stretched after the years of use, and the tension of a plurality of (usually three) main ropes is unbalanced. When this imbalance becomes significant, only the main rope with a strong tension comes into contact with the sheave, and the problem arises that only this main rope wears. Therefore, it is necessary to adjust the tension when an imbalance occurs in the tension. As a means to identify the occurrence of unbalance at this time, stop the car and the counterweight close to each other, and measure the deflection amount of the tension spring between the car side and the counterweight side for each main rope. , The main ropes were distinguished by the difference in the amount of spring deflection.

When there is a difference (usually 2 mm or more), the tension spring of either the extending car or the counterweight is bent by tightening the nut for adjustment.

[0005]

In the above-mentioned prior art, a large amount of force is required to tighten the nut while the spring pressure is being applied to the nut. In particular, the work is done in a narrow space such as on the car, and this work is very hard for the worker.

An object of the present invention is to provide a method for adjusting the tension of the main rope of an elevator, which can tighten the nut when adjusting the tension of the main rope with a light force.

[0007]

[Means for Solving the Problems] The above object is to provide a suspension plate on an upper frame for supporting a car or a counterweight, and to the suspension plate, a main rope is provided on the upper part via a shackle socket and a tension spring is provided on the lower part. In the elevator main rope fixing device having the thimble rod provided therethrough, when adjusting the tension of the main rope, a support body extending upward is attached to a side portion of the upper frame body, and a lower hollow portion of the shackle socket is attached to the support body. Rotatably provided a bar extending through and extending the bar, and by pushing the bar downward, the thimble rod is moved downward to loosen the tension spring,
This is achieved by tightening a nut provided at the lower end of the thimble rod.

[0008]

When the tension of the main rope is adjusted, a support body extending upward is attached to the side portion of the upper frame body, and a bar extending through the lower hollow portion of the shackle socket is rotatably provided on this support body. Then, the bar is pushed downward to move the thimble rod downward to loosen the tension spring, and in this state, the nut provided at the lower end of the thimble rod is tightened. This allows the nut to be tightened by hand.

[0009]

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

FIG. 1 is a schematic view showing a connected state of a main rope and a car side, and FIG. 2 shows a state in which work is performed by using an elevator main rope tension adjusting method according to an embodiment of the present invention. It is the conceptual diagram shown.

In the drawing, 1 is a car, and this car 1
Are supported by a platform including a lower frame (not shown), a horizontal frame 2, and an upper frame 3. 4 is a guide shoe provided on the left and right of the upper frame 3, 5 is a guide rail standing upright in a hoistway (not shown), 6 is a main rope, usually one is on the car 1 side and the other is It is connected to a counterweight (not shown). Reference numeral 7 is a thimble rod, and a shackle socket 8 to which the main rope 6 is connected is fixedly mounted on the upper end of the thimble rod 7. The thimble rod 7 extends downward through a hole provided in a suspension plate 9 attached to the upper frame 3, a tension spring 10 is fitted to this extension, and a nut 11A is attached to the lower end. 1
1B is screwed together. Reference numeral 20 denotes a jig that is attached to the upper frame body 3 when adjusting the tension. The jig 20 includes a support body 22 fixed to the side portion of the upper frame body 3 by a screw 21 and extending upward. A pin 23 is rotatably attached to the upper end of 22.
And the bar 24 joined by
Is a lower hollow portion 8 provided in the shackle socket 8.
It penetrates A.

Next, a working method for adjusting the tension will be described. Now, the worker rides on the car 1 and drives the car 1 to stop at a level with a counter weight (not shown). In this state, the amount of deflection of the tension spring 10 is measured for each main rope 6. When the variation in the amount of deflection is 2 mm or more, the bar 24 of the jig 20 attached as shown in FIG. 2 is passed through the shackle socket 8 of the main rope 6 on the loose side. Next, when the bar 24 is pushed down, the thimble rod 7 is also moved downward, and the spring 10 is in a pressureless state.
In this state, the nuts 11A and 11B are moved upward by a predetermined amount, and then the bar 24 is returned to the original position, and the jig 20
Remove and finish the work.

In this embodiment, the thimble rod 7 is moved downward so that the nut 11 is released without the pressure of the spring 10.
Since the A and 11B are moved, the nuts 11A and 11B can be operated with a light force, and the workability can be significantly improved.

In this embodiment, the tension spring 10 on the side of the car 1 is adjusted, but the same jig may be used to adjust the tension spring 10 on the counterweight side. The effect can be obtained.

[0015]

According to the present invention, when adjusting the pressure of the tension spring, the nut can be tightened with an extremely light force, and the workability can be remarkably improved.

[Brief description of drawings]

FIG. 1 is a schematic view showing a connected state of a main rope and a car side.

FIG. 2 is a conceptual diagram showing an embodiment of a method of adjusting the main rope tension of an elevator according to the present invention.

[Explanation of symbols]

 3 Upper Frame 6 Main Rope 7 Thimble Rod 8 Shackle Socket 8A Shackle Socket Hollow 10 Tension Spring 11A, 11B Nut 20 Jig 21 Screw 22 Support 23 Pin 24 Bar

Claims (1)

[Claims] 1. A suspension plate is provided on an upper frame body that supports a car or a counterweight, and a main rope is passed through the suspension plate through a shackle socket and a thimble rod having a tension spring at the bottom is penetrated. In the elevator main rope fixing device, when adjusting the tension of the main rope,
A support body extending upward is attached to a side portion of the upper frame body, and a bar extending through the lower hollow portion of the shackle socket is rotatably provided on the support body, and the bar is pushed downward. Main rope tension adjusting method for an elevator, wherein the thimble rod is moved downward to loosen the tension spring, and the nut provided at the lower end of the thimble rod is tightened.