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Metal magnetic memory steel rail temperature stress detection device

A technology of metal magnetic memory and temperature stress, which is applied in transportation and packaging, railway vehicle shape measuring instruments, railway car body parts, etc., can solve the problems of operation complexity, time-consuming manpower, material and financial resources, and limitations, and achieve Prevent safety accidents, improve the level of safety detection technology, improve applicability and convenience

Active Publication Date: 2014-04-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the need for a comprehensive survey of the route has been recognized, in practice this task is time consuming as well as manpower, material and financial resources
Therefore, traditional non-destructive testing (NDT) methods (eddy current testing, ultrasonic testing, X-ray and magnetic particle testing, etc.) due to the complexity of their operations, such as requiring cleaning of the tested surface and testing objects, artificial magnetization, attachment of sensors, etc. , which is severely limited in the detection of long-length structural members such as seamless lines

Method used

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  • Metal magnetic memory steel rail temperature stress detection device
  • Metal magnetic memory steel rail temperature stress detection device
  • Metal magnetic memory steel rail temperature stress detection device

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Embodiment Construction

[0024] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] An embodiment of the present invention provides a metal magnetic memory rail temperature stress detection device, which includes a flaw detection trolley 1 and a handheld display 2 . Such as figure 1 , 2 The flaw detection trolley 1 shown in . fixed on the front, rear, left, and right sides of the vehicle body 3; several first magnetic sensors 6 are placed side by side and equidistant outside the front of the vehicle body 3; several temperature sensors 7 are placed at the bottom of the vehicle body 3; figure 2 , 7 The shown handheld display 2 and the flaw detection trolley 1 can transmit data through wireless signals, and the handheld display 2 can be placed on the top of the flaw detection trolley 1 .

[0026] The inside of vehicle body 3 is fixed with motor 8, AD data collector, memory card, the first single-chip...

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Abstract

The invention discloses a metal magnetic memory steel rail temperature stress detection device, which comprises a flaw detection trolley and a handheld display, wherein the flaw detection trolley consists of a trolley body, stroke wheels, auxiliary trolley arms, a plurality of magnetic measurement sensors and a plurality of temperature sensors; the handheld display and the flaw detection trolley can transmit data via a wireless signal; the handheld display can be arranged on the top of the flaw detection trolley. According to the metal magnetic memory steel rail temperature stress detection device provided by the invention, detection and prompt can be automatically carried out on a steel rail in a long distance, an important means is provided for the nondestructive detection of the steel rail, and the metal magnetic memory steel rail temperature stress detection device has an important function for guaranteeing the safe and stable long-term operation of the steel rail.

Description

technical field [0001] The invention relates to the technical field of flaw detection vehicles for seamless steel rails, in particular to a device for detecting the temperature stress of steel rails by using metal magnetic memory. Background technique [0002] With the development of high-speed and heavy-duty railways, seamless track technology is widely used in countries all over the world. However, after dozens of standard rails are welded together to form a seamless line, the effects of ballast resistance and fastener resistance make the line only thermally expand and contract within 100m at both ends, and the middle part forms a fixed area , does not expand and contract with the change of rail temperature, so the corresponding longitudinal temperature stress is stored in the rail fixing area. When the temperature reaches a certain value, the rail cannot withstand the huge internal stress, and energy will be released in the area where the fastener resistance is small or ...

Claims

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Application Information

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IPC IPC(8): B61K9/08
Inventor 包胜林立楼航飞
Owner ZHEJIANG UNIV
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