In-service pulsed eddy current detection device and method of damage of mine hoisting steel wire ropes

Abstract

The invention relates to an in-service pulsed eddy current detection device and method of damage of mine hoisting steel wire ropes, and belongs to the technical field of damage detection of the mine hoisting steel wire ropes. Rollers of the detection device are fixed to roller brackets and slide with movement of a steel wire; springs are fixed between the roller brackets and semicircular tube sideplates and are used for adjusting the diameters of the steel wire ropes clamped by the rollers in a follow-up mode; the roller brackets are symmetrically distributed and mounted at the two ends of the semicircle tube side plates, and limit through nuts; and probe sensors are distributed on the semicircle tube side plate in a circular array mode and located between the two roller brackets, and thesteel wire ropes penetrate through a circular tubular mechanism assembled and formed by the two semicircle tube side plates and are clamped by the four rollers. Detection signals of the mine hoistingsteel wire ropes are measured by the probe sensors, the damage state of the steel wire ropes is evaluated by comparing with a signal threshold value measured by a standard test part of the mine hoisting steel wire ropes, in-service nondestructive detection of the mine hoisting steel wire ropes is realized, influence of probe lift distance variation is inhibited, and the device is self-adaptivelyadjusted with the diameter size of the steel wire ropes.

Description

technical field [0001] The invention relates to the technical field of damage detection of mining hoisting wire ropes, in particular to an in-service pulsed eddy current detection device and method for the damage of mining hoisting wire ropes. Background technique [0002] With the diversification of coal mining methods, various types of winches and hoists play an important role in coal mine inclined tunnel or mine transportation. When transporting personnel and equipment, the hoisting wire rope needs to bear a large load, and the environment of the mine and inclined roadway is harsh. Under long-term working conditions, the hoisting wire rope will inevitably suffer from wear, corrosion and broken wires, which seriously threatens the mining hoist. If the damage of the wire rope is not detected in time and repaired and replaced, the hoisting wire rope will break in severe cases, causing major safety accidents, causing heavy economic losses and casualties to the country and the...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an in-service pulsed eddy current detection device and method for mine hoisting wire rope damage, which solves the problems of inconvenient installation and disassembly of the existing non-destructive testing technology, difficulty in realizing detection under in-service working conditions, and low detection accuracy

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