Large-size closed magnet yoke type magnetic particle flaw detector for railway wheel set

Abstract

The invention discloses a large-size closed magnet yoke type magnetic particle flaw detector for a railway wheel set. The detector comprises a base, a large magnet yoke, a driving close mechanism, a feeding mechanism, a discharging mechanism and a magnetic suspension spray header, wherein the large magnet yoke comprises a fixed magnet yoke iron core, a moveable magnet yoke iron core and a magnet yoke magnetic induction coil, wherein after the magnet yoke magnetic induction coil is wound on a skeleton, the magnet yoke magnetic induction coil is arranged on the fixed magnet yoke iron core in a sleeving manner; the driving close mechanism of the closed iron core is positioned on the base and is capable of driving the moveable magnet yoke iron core to move along the horizontal direction; the feeding mechanism and the discharging mechanism are arranged on the base; the magnetic suspension spray head is arranged aside an ultraviolet ray fastener under the large magnet yoke. According to the large-size closed magnet yoke type magnetic particle flaw detector for the railway wheel set provided by the invention, a large-size closed magnet yoke magnetic induction method is adopted for magnetizing, so that the phenomenon of serious ignition caused by poor closed contact in the traditional device adopting the opening coil can be avoided, the equipment failure rate is reduced and the coefficient of safe production is increased.

Description

technical field [0001] The invention relates to the technical field of flaw detectors, in particular to a large closed yoke magnetic particle flaw detector for railway wheelsets. Background technique [0002] In the related art, the equipment for non-destructive flaw detection of the wheel set of the locomotive adopts open and close coils to detect the flaw of the wheel set of the locomotive. In the process of flaw detection, this kind of flaw detection equipment using open and close coils drives movable electric shocks through the driving mechanism, so that the open and close coils are closed and contacted to conduct, thus forming a multi-turn helical coil. During the use of the above-mentioned flaw detection equipment, due to the existence of movable contacts, when a large current is applied to the opening and closing coil, ignition and burning may occur, resulting in unstable magnetization current and affecting the magnetization effect. [0003] In addition, the structur...

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Problems solved by technology

During the use of the above-mentioned flaw detection equipment, due to the existence of movable contacts, when a large current is applied to the opening and closing coil, ignition and burning may occur, resulting in unstable magnetization current and affecting the magnetization effect

[0003] In addition, the structure of the above-mentioned flaw detection equipment is relatively complicated, the reliability of the driving mechanism is not high, and there are multiple states of the driving mechanism and the open-close coil, which takes up a lot of space during use, and it can only be used for ordinary axles without other For some wheel sets that are used in subways, light rails, etc., other components are integrated on the wheel axle, it cannot be detected

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