Lining replaceable type steel wire rope detector

Abstract

The invention relates to the technical field of steel wire rope detection, and discloses a detection method and an internal structure of a detector. The lining replaceable type steel wire rope detector is characterized in that a lining slightly larger than the diameter of a steel wire rope is arranged, so that the instrument achieves good centering performance; a plurality of matched inner liningsand outer linings are provided for detecting steel wire ropes with different rope diameters, so that the universality of the instrument is improved; a concave platform is arranged at the outer lining, and an installation space for a flexible flat cable board is reserved in cooperation with the inner lining, so that the defect that a steel wire rope in a roller type steel wire rope detector is faraway from a detection element can be overcome, and high detection precision is achieved; and the installation space for the of the flexible flat cable board is reserved in cooperation, so that installation is convenient, and all-phase arrangement of detection elements can be achieved. According to the invention, the radial vector of the magnetic flux leakage signal of the steel wire rope is detected, the value of the radial vector of the signal is zero when the steel wire rope is not damaged, and the radial vector of the magnetic flux leakage signal exists only when the damage exists, so thatthe problem that the axial vector collected in the past exceeds the measuring range of a detection element is solved.

Description

technical field [0001] The invention relates to the technical field of non-destructive detection of steel wire ropes, in particular to a steel wire rope detector with a replaceable lining. Background technique [0002] Steel wire rope has many advantages such as high tensile strength, light weight, good elasticity, stable and reliable work, and strong ability to withstand dynamic load and overload. sector is widely used. However, as a kind of engineering load-bearing equipment, steel wire rope is often affected by complex working conditions and environments such as bending fatigue, wear, alternating loads, mechanical impact and corrosion during operation. There are potential safety hazards due to corrosion and other phenomena. Its damage and carrying capacity are directly related to personnel and production safety. [0003] Therefore, in order to ensure the safe and reliable operation of steel wire ropes, experts and scholars at home and abroad have been exploring non-des...

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Problems solved by technology

[0004]In the existing steel wire rope testing instruments, most of them use rollers to solve the problem of eccentricity between the steel wire rope and the instrument caused by the permanent magnet adsorption of the steel wire rope, such as the utility model patent "Portable Wire Rope Detection device" (CN208313892U) and utility model patent "wire rope detector assembly" (CN207163809U), however, when detecting a steel wire rope with a smaller diameter, there will be a problem that the wire rope is far away from the Hall element, resulting in poor detection accuracy, or Problems such as no signal detected

[0005]At present, most of the wire rope detection instruments detect the axial magnetic flux leakage signal, which is consistent with the direction of the internal magnetic field of the wire rope, which can easily cause the magnetic saturation of the Hall element The situation, that is, beyond the detection range of the Hall element

[0006]There was an accident where the testing instrument was taken away by the steel wire rope at the testing site.

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