Elevator balance coefficient detection instrument measuring speed through magnetic roller

Abstract

The invention discloses an elevator balance coefficient detection instrument measuring speed through a magnetic roller. The elevator balance coefficient detection instrument is characterized in that a speed measuring system (3) measures and conveys operation speed information of an elevator; a power measuring system (1) measures and conveys operation power information of the elevator; a measurement data processing system (2) receives the operation speed information and the operation power information and performs analytical calculation to acquire a detection value of the balance coefficient of the elevator; the detection instrument adopts the magnetic roller speed measurement scheme; during measurement, the excircle of the magnetic roller (4) is appressed to the side surface of an elevator steel wire rope (5); while moving up and down, the elevator steel wire rope (5) drives the magnetic roller (4) to rotate; speed measurement information is output through a rotary encoder connected with the magnetic roller; a roller body structure of the magnetic roller is that an annular magnet is embedded in a thin-wall roller shell; the magnetic pole of the annular magnet is radial; and magnetic attraction force generated by the excircle of the magnetic roller and the elevator steel wire rope in contact with the excircle of the magnetic roller is relatively large, so that measurement error caused by slip of the steel wire rope and the excircle of the magnetic roller can be reduced, and detection precision is improved.

Description

technical field [0001] The invention relates to a detection instrument, more specifically, a special detection instrument for testing the balance coefficient of a traction elevator. Background technique [0002] China is the world's largest elevator producer and elevator consumer. About 700,000 new elevators are installed and used every year, of which traction elevators account for more than 90%. According to the requirements of the current elevator technical specifications, these newly installed elevators must be tested and adjusted for the balance coefficient, and can only be put into use after passing the test. Therefore, the detection of balance coefficient is a large-volume, wide-ranging and demanding technical work in the elevator industry. [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 ...

AI Technical Summary

Problems solved by technology

The problem that still exists is that the structure of the instrument needs to be further optimized to meet the requirements of detection accuracy and elevator construction site detection

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