Device and method for detecting lateral swing displacement of shaft hoisting wire rope

Abstract

A vertical shaft hoisting wire rope lateral swing displacement detection device and method, the device includes a support frame, a longitudinal laser, a longitudinal camera, a longitudinal shading cover, a horizontal laser, a horizontal camera, a horizontal shading cover, and a signal processor, and the support frame is fixed on the vertical shaft hoisting wellhead derrick On the inner wall of the supporting frame, a horizontal laser and a vertical laser are arranged horizontally and vertically, and a horizontal camera and a vertical camera are arranged on the back of the two lasers along the laser projection direction. The image is projected and sent to a signal processor. Use two orthogonal lasers to irradiate the steel wire rope, and use the camera to capture the projection images of the corresponding lasers irradiating the steel wire rope, and then detect the lateral swing displacement of the steel wire rope along its own cross-section in the X-Y direction in real time. High precision, both reliability and convenience, has a wide range of practicability.

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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