Large-scale road maintenance equipment for detecting looseness of rail fastener and corresponding detection method

Abstract

The invention provides large-scale road maintenance equipment for detecting looseness of a rail fastener. The equipment comprises a fastener looseness detection device and is characterized in that thefastener looseness detection device comprises a laser range finder, a vibration compensation device, a microcomputer control system, a video recognition system and a positioning synchronization system, the laser range finder is connected with the microcomputer control system, and the microcomputer control system is also connected with the video recognition system, the positioning synchronizationsystem and the vibration compensation device. Laser measurement is adopted, meanwhile, a vibration compensation system is arranged, the vibration compensation device measures vertical acceleration ofa detection beam through an inertia packet in the measurement beam, adverse factors such as gravity components and the like are removed, and secondary integration is carried out on the acceleration toobtain a displacement value. The vibration compensation device can compensate the influence of the vibration displacement of a train without being influenced by the vibration of the train, and a result is more accurate.

Description

technical field [0001] The invention relates to a large-scale road maintenance equipment for identifying loose fasteners for railway and subway rails, and belongs to the technical field of engineering equipment. Background technique [0002] With the rapid development of my country's railway industry, rail transit has become the most important tool for people to travel. Therefore, ensuring the safe, stable and uninterrupted operation of trains has become an important mission of Chinese railway personnel. Reasonable maintenance of railway line equipment and timely and effective analysis, prevention and remediation of line equipment diseases are the keys to ensure safe railway transportation. In the line maintenance, the daily inspection of the fasteners is one of the necessary inspection items. If the railway rail fasteners are loose or damaged, the loosening of a fastener can easily induce the loosening of the surrounding fasteners and aggravate the damage of the track struc...

AI Technical Summary

Problems solved by technology

[0003] At present, there are three main methods for fastener loose detection: 1) The method based on manual inspection, which is low in efficiency, high in cost, and easy to miss; 2) The method based on computer vision, which can effectively identify whether the fastener is missing , but it cannot identify the degree of looseness of the fasteners, and the train vibration has a great impact on the image quality; 3) The method based on the vibration signal uses the self-power spectral density method to identify the looseness of the fasteners, and the sensitivity of this method is low. Easily affected by the input stimulus, the recognition result of fastener loosening is not good

[0004] For example, the Chinese invention patent with the publication number CN 105699381 B discloses a machine vision-based rail fastener detection device. This method can effectively identify whether the fastener is missing, but cannot identify the degree of looseness of the fastener, and the train vibration has an impact on the image quality. great influence

[0005] The Chinese utility model patent with the publication number CN 208476808 U discloses an abnormal detection system for rail fasteners, which collects image information of infrared sensitive marks by an infrared camera to judge whether the fasteners are abnormal, and train vibration has a great influence on the image quality and Infrared sensitive markers are not durable

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