Simple clamping device for ultrasonic inspection of residual stress of steel rail

A technology of residual stress and ultrasonic testing, applied in the direction of measuring devices, measuring forces, instruments, etc., can solve the problems that the overall measurement of rail head and rail waist, mobile measurement and in-service measurement cannot be realized

Inactive Publication Date: 2013-01-23
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to disclose a simple clamping device for ultrasonic detection of rail residual stress, mainly aimed at the problem that the traditional rail internal stress detection cannot realize the overall measurement, mobile measurement and in-service measurement of the rail head and rail waist

Method used

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  • Simple clamping device for ultrasonic inspection of residual stress of steel rail
  • Simple clamping device for ultrasonic inspection of residual stress of steel rail
  • Simple clamping device for ultrasonic inspection of residual stress of steel rail

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Embodiment Construction

[0015] The specific embodiment of the present invention is described in detail below:

[0016] figure 1 Among them, the rail head magnetic seat 8 is embedded in the guide support frame 7, and the rail head magnetic seat is fixed on the guide support frame 7 by using the pressure plate 13 and the pressure plate bolt 9. Combine the probe 3 with the plexiglass wedge 4 , place the spring 11 in the groove in the plexiglass wedge 4 and install it in the corresponding installation hole of the guide support frame 7 . Place the assembled guide support frame 7 on the steel rail 1 to be tested stably. The magnetically conductive fixing plate 14 is fixedly connected with the mounting plate 2 by using the fixing plate screws 15, the rail waist magnetic base 10 is embedded in the mounting plate 2 and the bottom surface is closely attached to the magnetically conductive fixing plate 14, and the magnetic base cover plate 5 Fix and connect the rail waist magnetic base 10 and the strapping pl...

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Abstract

The invention relates to a simple clamping device for ultrasonic inspection of the residual stress of a steel rail. Mainly aiming at the problem that stress measurement of a railhead and a rail web cannot be simultaneously carried out in the traditional nondestructive inspection process of the residual stress of the steel rail, the invention provides a simple clamping device for measuring the residual stress of a steel rail, which is capable of automatically compensating the abrasion of organic glass wedge blocks and making up the thickness inconsistence of a coupling layer caused by the unsmooth surface of the steel rail by means of the elasticity of a spring and has a magnetic self-absorption function. The device is convenient to use, simple in operation and adjustable in magnetic absorption force and the elasticity of the spring so as to meet the testing requirements for locating, pre-tightening and accurately measuring the surfaces of steel rails with different specifications under different use conditions. The simple clamping device is simple in structure, replaceable in all parts, suitable for experiments for inspection of residual stresses of various steel rails and capable of being popularized to the experimental inspection activity of the residual stress of various rolled section steel.

Description

1. Technical field [0001] The invention relates to a simple clamping device for ultrasonic detection of rail residual stress. The device is small in size, light in weight and easy to operate, and is especially suitable for high-speed measurement of the stress distribution of the rail head and rail waist, and can be widely used in the stress measurement of rail stress and other rolled steel. 2. Background technology [0002] Rail is an essential and important component in the railway transportation system, and its own stability and reliability directly affect the efficiency and safety of railway transportation. Due to the long-term effect of the alternating load of the heavy-duty train on the rail in service and the thermal expansion and contraction effect caused by the change of ambient temperature, the internal stress will gradually accumulate in the rail. When the internal stress exceeds the yield strength of the rail itself, the rail body will bend or even Fracture accid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/25
Inventor 徐春广潘勤学李骁肖定国徐浪郭军宋文涛
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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