Steel rail damage detection system and method and computer equipment

Abstract

The invention discloses a steel rail damage detection system and method and computer equipment, wherein the detection system comprises that a first ultrasonic signal is transmitted to one of at leasttwo calibration wafers of a central detection wheel, and each calibration wafer receives a first rail bottom echo signal; each detection wafer in at least two detection wafers of the detection wheel emits a second ultrasonic signal and receives a second rail bottom echo signal, and the echo signal intensity of the second rail bottom echo signal is determined; the computer equipment is connected with a detecting detection wheel and a centering detection wheel and is used for determining a deviation value and a deviation direction of the centering detection wheel according to the first rail bottom echo signal, determining a signal compensation value of each detection wafer, and determining whether a steel rail at the second rail bottom echo signal acquisition position is damaged or not according to the signal compensation value of each detection wafer and the echo signal intensity of the corresponding wafer. The situation that a flaw detection vehicle running at the speed of 80 km / h leaks detection of the damage of the steel rail can be reduced.

Description

technical field [0001] The present application relates to the technical field of non-destructive testing, in particular to a rail damage detection system, method and computer equipment. Background technique [0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] The use of large-scale rail flaw detection vehicles to carry out rapid and periodic inspections of in-service lines is playing an increasingly important role in ensuring line safety. The detection capability of the rail flaw detection vehicle largely depends on the alignment of the ultrasonic wheel probe (hereinafter referred to as the probe wheel) during fast operation. When the rail flaw detection vehicle cannot ensure the lateral alignment of the probe wheel and the rail, the ultrasonic signal cannot effectively enter the In the designated ar...

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Problems solved by technology

[0012] However, figure 2 and image 3 The technical method shown is to measure the centering deviation, and then use the servo motor or drive hydraulic system to calibrate the deviation of the probe wheel. Although the problem of centering deviation has been largely solved, the deviation has already occurred at this time, and the ultrasonic The signal has been weakened or even disappeared due to the centering deviation of the probe wheel, which may lead to missed detection of rail damage

Figure 4 The technology shown can meet the centering requirements when running at low speed, but as the running speed increases, the lateral stretching force of the tracking cylinder increases greatly. Excessive lateral force is very unfavorable for the safe running of the flaw detection vehicle and cannot be realized. Mechanical Alignment of Flaw Detection Car at 80km / h Speed

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