Metal magnetic memory rail weld detection device

Abstract

The invention discloses a metal magnetic memory steel rail welding seam flaw detection device which comprises a flaw detection trolley and a hand-held terminal, wherein the flaw detection trolley comprises a bodywork, two driving travelling wheels, two driven travelling wheels, a probe fixing rod, two detection wheels, a plurality of magnetism measurement sensors, a first probe track, a second probe track, a first motor, a second motor and four auxiliary wheels; the hand-held terminal is used for carrying out control and data transmission on the flaw detection trolley by wireless signals. After the metal magnetic memory steel rail welding seam flaw detection device is adopted, the steel rail welding seam can be automatically and manfully controlled to be detected on a steel rail from a long distance, the welding seam with a non-healthy state can be located at a fixed point, and workers can be prompted and pre-warned, so that an important means is provided for nondestructive testing of the steel rail welding seam. After the device is used, nondestructive welding seam detection is carried out on the steel rail, so that the device plays an important role in the aspect of enabling the steel rail to safely and stably run for a long time.

Description

technical field [0001] The invention belongs to the technical field of flaw detection vehicles for seamless rails, in particular to a device for flaw detection of rail welds by using metal magnetic memory. Background technique [0002] Since the reform and opening up, with the rapid growth of China's economy, the economic ties across the country have become closer and closer, and the economic exchanges between various regions have become more and more frequent, which has put forward higher and higher requirements for my country's transportation industry. In the transportation industry, rail transportation has obvious advantages in terms of energy consumption per unit volume, occupation of environmental resources, protection of environmental quality, adaptation to the natural environment, and operational safety. In order to meet the requirements of my country's economic development, at present, my country's rail transit is in a period of prosperity and rapid development. The...

AI Technical Summary

Problems solved by technology

[0007] In the middle and later stages of diagnosis, on the one hand, due to the long-term rolling of the rail by the wheel, the insignificant initial defects existing in the early stage continue to expand and tend to become serious, such as the weld seam is constantly pulled apart, and the rail tends to break

At the same time, under the continuous rolling of the wheels, the top surface of the welded joint is easily worn to form a low-slump joint, resulting in uneven joints

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