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On-line detection device for broken wires of wire ropes

A technology of wire rope and broken wire, applied in the direction of material magnetic variable, etc., can solve the problems of undetectable wire rope and weak magnetic flux leakage signal, and achieve the effects of accurate detection, high sensitivity and convenient use.

Inactive Publication Date: 2011-09-28
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the detection device is used to detect the broken wire inside the wire rope, the main reason is that the magnetic flux leakage generated by the internal broken wire is short-circuited by the external steel wire, and the magnetic flux leakage signal is very weak or even does not radiate any magnetic flux leakage signal outward. The magnetic device cannot detect the internal broken wire of the wire rope

Method used

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  • On-line detection device for broken wires of wire ropes
  • On-line detection device for broken wires of wire ropes
  • On-line detection device for broken wires of wire ropes

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Embodiment Construction

[0014] The specific embodiment of the present invention is further described in detail in conjunction with the accompanying drawings, so that technical personnel in this field can actually make a kind of magnetic induction wire rope broken wire online detection device according to this specific embodiment, and its specific embodiment is as follows:

[0015] figure 1 As shown, for the broken wire signal sensing unit of the present invention, in actual implementation, the unit, that is, an inert tube with three coil windings, should be placed on the steel wire rope 11 to be tested and fixed. The detailed manufacturing process of the broken wire signal sensing unit: on a magnetically inert (such as copper or aluminum) tube 5 with a length of L and a diameter of D, three groups of coils are wound with an enamelled copper wire with a diameter of d, and the two ends of the tube 5 The number of turns of the first induction coil 1 and the second induction coil 2 are equal, both are N1...

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PUM

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Abstract

The invention discloses an on-line detection device for broken wires of wire ropes. The on-line detection device is characterized in that two corresponding alternating magnetic fields which are opposite in direction and equal in size are formed at the corresponding parts of a magnetic-lag hollow tube along the length direction of the magnetic-lag hollow tube, so that the middle part of the magnetic-lag hollow tube is formed into a zero magnetic field, and an induced magnetic field is formed, the alternating magnetic field in the corresponding direction of the induced magnetic field is generated by a high-frequency alternating current power supply. By using the device disclosed by the invention, the external broken wires of wire ropes can be detected, and the internal broken wires of the wire ropes also can be accurately detected; and meanwhile, the device is simple in structure, easy to use, accurate in detection, and high in sensitivity.

Description

technical field [0001] The invention relates to a wire rope broken wire detection device, in particular to a technical solution using an electromagnetic wire rope broken wire on-line detection device. technical background [0002] As a key component of material handling equipment, steel wire ropes are widely used in industrial, mining and transportation, especially in various industries such as mine hoisting, ship docks and tourist ropeways. However, defects such as corrosion and broken wires often occur during long-term use. If they are not discovered in time, serious consequences will occur. Therefore, it is of great practical significance to accurately detect the damage condition of the wire rope. [0003] Broken wires of existing steel wire ropes are still mostly detected by manual visual inspection. Visual online detection of broken wires in wire ropes cannot be realized in many working conditions. It is necessary to replace all the wire ropes before manual inspection,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/82
Inventor 周义仁吕青韩晓霞张妍
Owner TAIYUAN UNIV OF TECH
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