Method for testing elevator balance coefficient by aid of elevator handwheel

Abstract

The invention relates to the technical field of elevator test, and provides a method for testing elevator balance coefficient by the aid of an elevator handwheel, which is time-saving, labor-saving, simple in operation and small in systematic composition error and can be used for conveniently, accurately and rapidly measuring the elevator balance coefficient. The method includes the steps: mounting a handwheel torque testing device on the elevator handwheel and testing handwheel torque values A1, A2 and A3 by the aid of the torque testing device after an elevator load operating test; and calculating the relation formula K=iX(A2+A3) / 2(A1+A2) of the handwheel torque values and the elevator balance coefficient according to torque balance principle, wherein the i refers to the proportionality coefficient of test load and rated load.

Description

technical field [0001] The invention relates to the technical field of elevator detection, in particular to a method for testing the balance coefficient of an elevator by using a hand wheel of an elevator pan. Background technique [0002] Elevator balance coefficient is an important parameter that needs to be measured on-site during the installation, acceptance and use of the elevator. It is also an important parameter related to the life, reliability, comfort and energy saving of the elevator. At present, the traditional dynamic current method is commonly used at home and abroad to test the elevator balance coefficient. Generally, the parameters such as the voltage and current of the traction motor during the operation of the elevator are measured, obtained through calculation and drawing, and the measurement is in accordance with the requirements of the elevator supervision and inspection regulations. , it is necessary to apply different rated loads to the elevator for ma...

AI Technical Summary

Problems solved by technology

At present, the traditional dynamic current method is commonly used at home and abroad to test the elevator balance coefficient. Generally, the parameters such as the voltage and current of the traction motor during the operation of the elevator are measured, obtained through calculation and drawing, and the measurement is in accordance with the requirements of the elevator supervision and inspection regulations. , it is necessary to apply different rated loads to the elevator for many times. In order to test this parameter, the inspectors have to spend a long time waiting for the relevant personnel to move the load of the weights many times. Inaccurate, there is a large system comprehensive error, it is difficult to obtain a more accurate elevator balance coefficient, the specific reasons are as follows:

[0003] 1. At the moment when the counterweight and the car run to the same horizontal position, there are large reading errors, instrument errors, and instrument response errors when manually testing the current and voltage under dynamic conditions;

[0004] 2. There are random errors caused by voltage fluctuations in the test process;

[0005] 3. When drawing the upward and downward running current (voltage, speed) load curves, the artificially generated drawing errors are large;

[0006] 4. A variety of different load conditions and multiple handling of test weights cause cumulative errors in measurement;

[0011] Although the principles of these two detection methods are relatively simple, in the inspection practice, it is still time-consuming and laborious to install the sensor, connect the instrument, and adjust the test load in the car. The improvement of the defects of the traditional detection method for the elevator balance coefficient is not obvious, and the effect is not ideal. Failed to popularize and promote in the daily inspection of elevators

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