High-speed visual on-line detection equipment for surface defects of steel rails

Abstract

The invention discloses high-speed visual on-line detection equipment for surface defects of steel rails, which comprises an imaging system, a low-speed parallel steel-rail moving device, a high-speed rotating device, a high / low-speed switching device, a bracket, a steel rail and a control system, wherein the high-speed rotating device and the steel rail are arranged on the high / low-speed switching device, and driven by the high / low-speed switching device, any one of the high-speed rotating device and the steel rail can move to a position below a camera in the imaging system; the high-speed rotating device comprises a high-speed rotary disc, and the upper surface of the high-speed rotating disc and the rail surface of the steel rail are arranged on the same horizontal plane; and the imaging system is arranged on the low-speed parallel steel-rail moving device, and can move along the arrangement direction of the steel rail when driven by the low-speed parallel steel-rail moving device.The equipment disclosed by the invention has the advantages of simple and compact structure, low cost, easy operation, high degree of automation, high precision, rapid detection speed, and the like.

Description

technical field [0001] The invention mainly relates to the field of visual inspection equipment, in particular to a high-speed visual online inspection equipment for rail surface defects specially used for rails. Background technique [0002] During the operation of the train, especially during acceleration and braking, and when passing through rail joints, curves and turnouts, it will cause friction, extrusion, bending and impact on the rail. Under the repeated action of these stresses, defects such as scars, cracks, surface abrasions, peeling and wrinkles will occur on the surface of the rails, and the rails with internal defects will break, which will become a major hidden danger to the safety of railway transportation. In the past, most of the online rail fractures were caused by internal defects. Therefore, the detection of rail defects mostly adopts internal flaw detection, such as non-contact ultrasonic technology. However, with the introduction of advanced productio...

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Problems solved by technology

At present, most of them stay in the research of visual detection algorithm, and do not explain the device, especially the influence of light source, vibration and other factors on imaging, and the technology of related companies has not been made public.

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