Flaw detection bracket and ultrasonic flaw detector

Abstract

The invention relates to a flaw detection support and an ultrasonic flaw detector, wherein the flaw detection support comprises a hanging frame assembly, a sliding frame assembly and a sliding shoe probe assembly; the hanging frame assembly comprises at least one hanging frame guide assembly, the hanging frame guide assembly comprises a guide shaft and a first spring, and the guide shaft is vertically arranged; the sliding frame assembly comprises a sliding frame plate assembly and at least one sliding frame guide assembly, the first spring and the sliding frame plate assembly are arranged onthe guide shaft in a sleeving mode, the sliding frame guide assembly comprises a guide shaft and a second spring, the guide shaft is horizontally fixed to the sliding frame plate assembly, and the second spring and the sliding shoe probe assembly are arranged on the guide shaft in a sleeving mode. The carriage assembly ensures that the skid shoe probe assembly is downwardly attached to a steel rail; the sliding shoe probe assembly can horizontally move along the guide shaft, so that the sliding shoe probe assembly is tightly attached to the steel rail from the side direction. The skid shoe probe assembly is always reliably attached to the preset flaw detection position of the steel rail along with the curve change of the inner side face of the steel rail.

Description

technical field [0001] The invention relates to the field of ultrasonic flaw detection, in particular to a flaw detection bracket and an ultrasonic flaw detector. Background technique [0002] Tram is a common way of urban rail transit. Most of its running lines use grooved steel rails (such as the track structure recorded in patent CN201310172048.6 or CN201910694525.2), which is similar to ordinary I-shaped steel rails. Compared with channel rails, due to their different geometric dimensions, the existing ultrasonic flaw detectors or flaw detection brackets used for I-shaped rails cannot fit the channel rails, which is not convenient for ultrasonic testing. Therefore, there has been no non-destructive testing equipment for this type of rail for a long time. Although the tram has the advantages of light load, slow speed, long rail life, etc., because the train rim always runs along the special rail groove of the grooved rail, the serpentine swing of the train also depends o...

AI Technical Summary

Problems solved by technology

Although the tram has the advantages of light load, slow speed, long rail life, etc., because the train rim always runs along the special rail groove of the grooved rail, the serpentine swing of the train also depends on the connection between the wheel rim and the rail during operation. The interaction between the main force point of the head (the outer part of the rail groove in the rail head) is completed. If it is left unchecked and the flaw detection is not carried out on the grooved steel rail, it will threaten the safety of urban rail transit, and there must be certain safety hazards

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