Elevator balance coefficient detection device and method

Abstract

The invention discloses an elevator balance coefficient detection device and an elevator balance coefficient detection method, relates to a detection device for an elevator, in particular to a device for detecting a balance coefficient of the elevator, and aims to provide an elevator balance coefficient detection device which is simple in structure, low in cost, easy and convenient to operate and short in acquisition time and has a small number of acquisition variables. The elevator balance coefficient detection device comprises a power detection module (10) for detecting the power of an elevator traction machine (31), and a user terminal (20) which is connected with the power detection module (10) and is used for outputting an elevator balance coefficient q according to the power of the elevator traction machine through the following formula: q=(Nx+Ns) / 2QgV, wherein q is the elevator balance coefficient; Q is a rated load; g is a gravity acceleration; NX is the empty descending power of a cage (32); NS is an empty ascending power of the cage (32); V is a rated speed of running of the cage (32) or a counter-weight (33).

Description

technical field [0001] The invention relates to a detection device for an elevator, in particular to a device for detecting the balance coefficient of an elevator. Background technique [0002] The national standard BG7588-2003 defines the balance factor as: "The balance factor, that is, the amount of rated load and car quality balanced by counterweight or balance weight." [0003] The current elevator technical standards and elevator inspection rules adopt the test method as follows: the car is loaded with 30%, 40%, 45%, 50%, and 60% of the rated load for the whole journey up and down, when the car and the counterweight run When reaching the same horizontal position, record the current value of the motor, draw the current-load curve, and determine the balance coefficient at the intersection of the upper and lower operating curves. [0004] The above-mentioned detection method of loading and running the elevator step by step, recording the current value of the motor, and dr...

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Problems solved by technology

[0004] The above-mentioned detection method of loading and running the elevator step by step, recording the current value of the motor, and drawing the current-load curve to determine the balance coefficient has the advantages of mature technology and reliable detection results; the disadvantage is that it is time-consuming and laborious, and the on-site operation time usually exceeds 1 hour. About one-third of the testing workload of the whole ladder

[0005] Due to the time-consuming and labor-intensive detection methods of the above-mentioned elevator balance coefficients, the no-load balance coefficient test technology has emerged in recent years, and some research results have been obtained. The method of balance coefficient, the static weight difference measurement method on both sides developed by Liaoning Petrochemical University, the balance coefficient detection method of ADIASYSTEM elevator detection system of German TUV company, etc.

Since the no-load test is adopted, the link of repeatedly handling weights is omitted. At present, the existing problem is that the test data is the static working condition data of the elevator, which is different from the dynamic test data adopted by the current elevator inspection rules. The installation of its test device is not convenient, etc., which limits the popularization and application

However, the acquisition of cross-phase velocity V s The process requires heavy detection instruments, and it also needs to be detected at a position close to the car, which has certain risks

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