A centering system and method for a rail flaw detection device
A flaw detection device and rail technology, applied in the detection field, can solve problems such as electromagnetic sensor failure, centering system failure, and corrosion, and achieve the effects of good practicability, improved detection rate, and guaranteed safety
Active Publication Date: 2017-11-03
CHINA ACADEMY OF RAILWAY SCI CORP LTD +2
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Problems solved by technology
[0011] In the prior art, the electromagnetic sensor is used to measure the position deviation, and the servo mechanism controls the position of the detection wheel to achieve centering. Since the in-service rail lines are laid in the field and exposed to the sun and rain, corrosion will inevitably occur. The electromagnetic sensor has Strong magnetism, so it will attract the rust up and stick to the sensor, after a period of time, the electromagnetic sensor will be covered with rust, causing the electromagnetic sensor to fail, which will lead to the failure of the alignment system
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[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. The position deviation measurement between the ultrasonic probe wheel and the rail center line is a very important content of the automatic centering of the ultrasonic rail flaw detection. Accurately and quickly measuring the positional deviation between the ultrasonic probe wheel and the center line of the rail with as little interference from the external environment as possible is the technical problem to be solved by the present invention.
[0038] The inven...
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The present invention provides a centering system and method for a rail flaw detection device. The rail flaw detection device includes an ultrasonic probe wheel. The system includes: a sensor for collecting rail profile data; a control module for determining the rail profile data according to the rail profile data The deviation between the ultrasonic probe wheel and the center line of the rail; the servo driver is used to adjust the ultrasonic probe wheel according to the deviation to achieve centering. The invention realizes the centering of the rail flaw detection vehicle under high-speed operation, overcomes the disadvantage of low detection speed of the trolley attached to the bottom of the large rail flaw detection vehicle, realizes the rail flaw detection under high-speed operation, and improves work efficiency.
Description
technical field [0001] The invention relates to detection technology, in particular to a centering system and method of a rail flaw detection device. Background technique [0002] The function of the rails is to guide the wheels of the vehicle forward and withstand the enormous pressure from the wheels. The steel rails in service have been subjected to repeated rolling by wheels for a long time, and there will inevitably be fatigue damage and defects. Therefore, in order to ensure the safe operation of the locomotive, it is necessary to carry out flaw detection on the in-service rails frequently, to find out the damage in the rails in time, so as to take remedial measures and prevent them from happening. [0003] The ultrasonic rail flaw detection vehicle detects rail damage based on the ultrasonic echo reflected by the rail damage. When using an ultrasonic probe for rail flaw detection, the 0-degree ultrasonic probe must be aligned with the geometric centerline of the rail...
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IPC IPC(8): G01N29/26
Inventor 钟艳春石永生张玉华王卫东顾世平杨国涛许建明徐其瑞马运忠李培
Owner CHINA ACADEMY OF RAILWAY SCI CORP LTD