Meridian tyre steel wire cord defect permanent magnetism excitation magnetic distortion detection probe and method

A technology of steel cords and detection probes, applied in the direction of material magnetic variables, etc., can solve the problems of high equipment cost and maintenance cost, X-ray hazard, etc., and achieve the effects of solving high equipment cost and maintenance cost, convenient detection and simple structure

Inactive Publication Date: 2008-09-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a permanent magnet excitation magnetic field distortion detection probe and method for radial tire steel cord defects, which can solve the high equipment cost and maintenance cost of the existing X-ray perspective method for checking the existence of radial tire steel cords , X-rays are harmful to the human body

Method used

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  • Meridian tyre steel wire cord defect permanent magnetism excitation magnetic distortion detection probe and method
  • Meridian tyre steel wire cord defect permanent magnetism excitation magnetic distortion detection probe and method
  • Meridian tyre steel wire cord defect permanent magnetism excitation magnetic distortion detection probe and method

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specific Embodiment approach 1

[0008] Specific embodiment one: this embodiment is specifically described in conjunction with Fig. 1 and Fig. 2, the permanent magnetic excitation magnetic field distortion detection probe of radial tire steel cord defect of this embodiment, it is made up of detection probe 1 and measurement and control circuit; Described detection Probe 1 is composed of N pole Hall element detection array 1-1, S pole Hall element detection array 1-2, permanent magnet 1-3, N pole yoke 1-4 and S pole yoke 1-5; N pole The Hall element detection array 1-1 is composed of five Hall elements 9 equidistantly arranged in a row, and the S pole Hall element detection array 1-2 is composed of five Hall elements 9 equidistantly arranged in a row. The measurement and control circuit includes ten signal amplifiers 3, ten A / D converters 4, single-chip controller 5 and display 6; N pole yokes 1-4, permanent magnets 1-3 and S pole yokes 1-5 in sequence Connected and form a "jaw" shape, the N-pole Hall element ...

specific Embodiment approach 2

[0010] Specific embodiment two: illustrate this embodiment in conjunction with Fig. 1, the difference between this embodiment and specific embodiment one is: it also comprises annunciator 7, and the signal input end of annunciator 7 connects another output end of single-chip microcomputer controller 5 . The defect of the tire steel cord is not only displayed on the display, but also given by the alarm, so that the operator can see it at a glance.

specific Embodiment approach 3

[0011] Specific embodiment three: the permanent magnet excitation magnetic field distortion detection method of the radial tire steel cord defect of the present embodiment comprises the following steps: 1. Carry out calibration: the calibration process passes through the N pole Hall element detection array 1-1 of the detection probe 1 and The S-pole Hall element detection array 1-2 scans the surface of the defect-free steel cord radial tire in the specified order, and the scanning direction is along the N-pole Hall element detection array 1-1 and the S-pole Hall element detection array The connection direction of 1-2 detects the magnetic field distribution of each position of the radial tire steel cord without defect, and records the data corresponding to the magnetic field distribution of each position through the memory of the single-chip controller 5; 2. Use the detection probe 1 The N pole Hall element detection array 1-1 and the S pole Hall element detection array 1-2 scan...

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Abstract

The invention provides a radial tires steel core defect permanent magnetism excitation magnetic distortion detecting probe and method, related to a radial tires steel core defect non-destructive inspection detecting device and method, to solve the problem that the device cost and maintenance cost is high in the present of X ray and the health of the human is hurt. The device comprises a detection probe and a test control circuit, wherein the detection probe is composed of two hall element detection arrays, permanent magnet and two yokes; and the test control circuit is composed of a plurality of signal amplifiers, A / D transducers, singlechip controller and display. The probe uses permanent magnetism excitation to generate magnetic field and the hall element detection arrays between the probe and steel cord detect the aberrance of magnetic field due to the steel core defect. If the detection result is compared with the detection result without defect, the presence of detect and the simple type of the defect can be judged.

Description

technical field [0001] The invention relates to a non-destructive testing device for detecting defects of radial tire steel cords, and also relates to a method for detecting defects of radial tire steel cords. Background technique [0002] The detection of steel cord defects (broken wires, etc.) in radial tires is of great significance for improving the safety, stability and transportation efficiency of automobiles. In the tire retreading and maintenance industry, there is also a large demand for detection equipment for steel cord defects. . At present, the method of X-ray perspective is generally used to inspect the defects of radial tire steel cords. The equipment cost and maintenance cost used in this method are high, and X-rays are also harmful to the human body. The development of a low-cost, long-life and safe testing equipment (including small and portable testing equipment) is an urgent need for steel cord radial tire manufacturing, retreading and maintenance indust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/82
Inventor 王晓明
Owner HARBIN INST OF TECH
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