Detection device and method for transverse swing displacement of vertical shaft lifting steel wire rope

Abstract

The invention discloses a detection device and method for transverse swing displacement of a vertical shaft lifting steel wire rope. The detection device comprises a supporting frame, a longitudinal laser device, a longitudinal camera, a longitudinal light shield, a transverse laser device, a transverse camera, a transverse light shield and a signal processor. The supporting frame is fixed to a shaft frame at a shaft opening of a vertical lifting shaft. The transverse laser device and the longitudinal laser device are transversely and longitudinally arranged on the inner wall of the supporting frame respectively. The transverse camera and the longitudinal camera are arranged behind of the transverse laser device and the longitudinal laser device in the projection directions of the transverse laser device and the longitudinal laser device respectively. A projection image of the steel wire rope after being illuminated by each laser device on the inner wall of the supporting frame is photographed through the corresponding camera, and then the projection images are transmitted to the signal processor. The two orthometric laser devices are adopted to illuminate the steel wire rope, the projection image of the steel wire rope after being illuminated by each laser device is photographed through the corresponding camera, in this way, the transverse swing displacement amount in the X direction and in the Y direction of the steel wire rope along the cross section of the steel wire rope can be detected in real time, the detection accuracy is high, and reliability, convenience, fastness and wide practicability are achieved.

Description

technical field [0001] The invention relates to a detection device and method, in particular to a detection device and method for lateral swing displacement of a steel wire rope suitable for a shaft hoisting system in a coal mine. Background technique [0002] Shaft hoisting is the dominant form of coal mine production in my country, and wire rope is an important part of the shaft hoisting system. The wire rope is the load-bearing and transmission component of the hoisting container (skip and cage) in the shaft hoisting, and its health status is the top priority of coal mine safety production. During the lifting and lowering process of the lifting container, the eccentric load of the lifting container, the defect of the guide rail and the eccentricity of the capstan will cause the steel wire rope to swing laterally, which has an additional impact on the lifting container and the guide rail, and also reduces the service life of the wire rope, threatening Improve the safe ope...

AI Technical Summary

Problems solved by technology

There are mainly the following problems: First, the lateral swing at the end of the steel wire rope is mainly reflected by installing a gyroscope, an acceleration sensor, etc. on the lifting container to detect the lateral swing of the lifting container, and due to the installation error and Cooperating with factors such as clearance, the lifting container cannot truly reflect the real lateral swing of the wire rope; second, for the lateral swing of the wire rope suspension point, since the wire rope needs to be continuously wound during the working process, and the lateral swing of the wire rope at the suspension point Smaller, which makes it difficult to detect the lateral swing displacement, making it difficult to quantify the lateral vibration transfer characteristics of the wire rope between the suspension point and the end

However, there are still the following problems in the research on the lateral vibration displacement detection of the shaft hoisting wire rope: first, during the hoisting process of the shaft, the wire rope swings laterally in the X-Y direction along its own cross section, and needs to be wound repeatedly on the capstan, while The current wire rope image processing technology mainly adopts the way of imaging the wire rope, which is difficult to detect the lateral swing of the wire rope. The lateral swing of the suspension point, especially the lateral swing of the suspension point is small, and it is difficult to obtain high accuracy by direct imaging of the steel wire rope, because the imaging method and imaging background of the steel wire rope need to be considered to improve the discrimination of the steel wire rope in the image. There is currently a lack of relevant research

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