Elevator Counterweight

An elevator and counterweight technology, applied in the field of elevator traction systems, can solve problems such as wear and tear of heavy guide shoes, and achieve the effects of prolonging the maintenance and replacement cycle, flexible change, and easy to manufacture and install.

Active Publication Date: 2020-09-22
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an elevator counterweight device, which can effectively solve the problem of counterweight guide shoe wear caused by unbalanced compensation chains / cables when the counterweight is configured

Method used

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  • Elevator Counterweight
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, the elevator counterweight device includes a counterweight frame 1, a counterweight block 4, at least two pairs of counterweight guide shoes 7 and compensation chains / cables;

[0029] The counterweight guide shoes 7 are respectively installed on the counterweight frame 1 for moving up and down along the counterweight guide rail;

[0030] The counterweight 4 is fixedly installed in the counterweight frame 1;

[0031] The suspension wire rope is fixedly connected to the lifting point with the upper frame part 12 of the counterweight frame 1 or is connected to the lifting point through the counterweight wheel;

[0032] One end of a single compensation chain / cable or one end of two compensation chains / cables with different unit weights is suspended on the lower frame member 13 of the counterweight frame 1;

[0033] The other end of a single compensation chain / cable or the other ends of two compensation chains / cables with different unit weights a...

Embodiment 2

[0045] Based on the elevator counterweight device of Embodiment 1, the counterweight frame 1 includes two side frame members 11, an upper frame member 12 and a lower frame member 13;

[0046] The two side frame parts 11 , one upper frame part 12 and one lower frame part 13 are connected by bolts or welding to form a counterweight frame 1 .

[0047] Preferably, two pairs of counterweight guide shoes 7 are installed on the upper frame member 12 and the lower frame member 3 respectively, and move up and down along the counterweight guide rail.

[0048] Preferably, a hanger part 6 is fixed on the lower side of the lower frame part 13; one end of a single compensation chain / cable or two compensation chains / cables with different unit weights are suspended from the hanger part 6.

[0049] Preferably, a bumper bumper 5 is fixed in the middle part of the lower side of the lower frame member 13 .

[0050] Preferably, the counterweight guide shoe 7 adopts a sliding guide shoe or a rolle...

Embodiment 3

[0052] The lifting point offset elevator counterweight device with a single compensation chain / cable, the suspension point of the steel wire rope is offset X to the right of the center of gravity of the counterweight, and the compensation chain / cable is suspended on the right of the center of gravity of the counterweight. The unbalanced moment analysis of the guide shoe 7 of the heavy device is as follows: figure 2 shown.

[0053] N is the tension of the wire rope, and the corresponding moment arm X;

[0054] T1 is the tension of a single compensation chain / cable on the counterweight, and the moment arm is L1;

[0055] When NX=T1*L1, the unbalanced moment disappears;

[0056] Get X=T1*L1 / N;

[0057] Since the tension T1 of the compensation chain / cable changes during the up and down running of the elevator car, the actual value of X can be calculated according to the force at the position of 1 / 2 the lifting height.

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PUM

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Abstract

The invention discloses an elevator counterweight device. Two or more pairs of counterweight guide shoes are mounted on a counterweight frame; counterweight blocks are fixedly mounted in the counterweight frame; a hanging steel wire rope and an upper frame piece of the counterweight frame are fixedly connected to a hanging point or connected to the hanging point through counterweight wheels; one end of a single compensation chain / cable or one ends of two compensation chains / cables with different unit weights are hung on a lower frame piece of the counterweight frame; the other end of the single compensation chain / cable or the other ends of the two compensation chains / cables with the different unit weights are hung to the bottom face of a car; the hanging point and a counterweight gravity center line are bias; the hanging point and a suspension point of the single compensation chain / cable on the lower frame piece of the counterweight frame are located on the same side of the counterweight gravity center line; or the hanging point and a suspension point of the heavy one of the two compensation chains / cables with the different unit weights on the lower frame piece of the counterweightframe are located on the same side of the counterweight gravity center line. The elevator counterweight device can effectively solve the problem of abrasion of the counterweight guide shoes when a counterweight is configured with the unbalanced compensation chains / cables.

Description

technical field [0001] The invention relates to an elevator traction system, in particular to an elevator counterweight device. Background technique [0002] The elevator counterweight is an important part of the elevator traction system. It moves up and down along the guide rail through the guide shoe, and its function is to balance the weight of the car. Elevator compensation system is another important part of the entire elevator system. It is used to balance the weight difference of the traction wire rope when the elevator runs up and down. It is generally divided into the following types, chain type, round cable type, flat cable type, etc. The two ends of the elevator compensation chain or compensation cable are suspended on the car side and the counterweight side respectively, and the up and down movement of the elevator will cause the compensation chain or compensation cable to also move up and down. [0003] Due to system configuration requirements, compensation cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B11/04B66B17/12
CPCB66B11/04B66B17/12
Inventor 周海波刘肃肃钱磊
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD
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