Method for detecting three-dimensional size of wheel groove of elevator traction wheel

Abstract

The invention relates to the field of elevator inspection and detection and particularly relates to a three-dimensional size detection method for a wheel groove of an elevator traction wheel. The invention discloses a method for detecting the three-dimensional size of a wheel groove of an elevator traction wheel. The method comprises the following steps of a, preparation before detection; b, obtaining a laser profile curve picture; c, extracting a profile curve; d, establishing a three-dimensional geometric model; e, extracting physical sign geometric data of the wheel groove; and f, defect positioning. According to the method, visual detection can be carried out under the condition of no contact with the traction wheel, 360-degree omnibearing detection is carried out on the surface size of the wheel groove of the traction wheel under the condition of not damaging the original surface of the wheel groove, and the detection data is comprehensive.

Description

technical field [0001] The invention relates to the field of inspection and detection of elevators, in particular to a method for detecting three-dimensional dimensions of sheave grooves of elevator traction wheels. Background technique [0002] The traction sheave is an important component of the elevator traction system. The traction machine provides driving force for the elevator car to move up and down through the friction between the traction sheave groove and the wire rope. During the long-term operation of the elevator, due to factors such as uneven tension of the steel wire rope, excessive assembly error, foreign particles and foreign matter embedded, and inconsistent material structure and performance of the traction sheave, the traction sheave groove will be worn and the groove shape will change. Furthermore, the traction conditions of the traction elevator are changed, resulting in noise and vibration during the operation of the elevator, and even serious accident...

AI Technical Summary

Problems solved by technology

During the long-term operation of the elevator, due to factors such as uneven tension of the steel wire rope, excessive assembly error, foreign particles and foreign matter embedded, and inconsistent material structure and performance of the traction sheave, the traction sheave groove will be worn and the groove shape will change. Then change the traction conditions of the traction elevator, resulting in noise and vibration during the operation of the elevator, and even serious accidents such as sliding ladders and pier bottoms, threatening the personal safety of passengers

[0003] Commonly used elevator traction sheave groove wear inspection method: use visual inspection, steel ruler or wheel groove wear measuring head to detect the degree of uneven wear of the sheave groove and the size of the groove surface to judge the failure degree of the traction sheave groove. This method has problems such as inaccurate measurement and low detection efficiency.

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