Flaw detection device of buffer spring

Abstract

The invention discloses a flaw detection device of a buffer spring. The flaw detection device of the buffer spring comprises a fixing seat, a rotary support, a roller, a connecting shaft and a rotary motor, wherein support seats are arranged at two ends of the fixing seat; transversely arranged fixing plates are arranged on the support seats; a piston of a first cylinder on each fixing plate is connected with a movable plate; a clamping electrode plate is arranged at one end of the movable plate; circumferential magnetic threading bars inserted into the buffer spring are arranged near the movable plate; the circumferential magnetic threading bars are oppositely arranged and respectively insulated with the movable plate and the clamping electrode plate; the clamping electrode plate and the two circumferential magnetic threading bars are connected with two poles of an external power supply; a convex arc surface is arranged at the end part of one circumferential magnetic threading bar; and a concave arc surface is arranged at the end corresponding to the other circumferential magnetic threading bar, and the convex arc surface is matched with the concave arc surface. By adopting the flaw detection device, the magnetization intensity and the magnetic field distribution of the circumferential magnetic threading bars can be improved; a magnetization effect of the buffer spring for flaw detection is ensured; and interference in a magnetic circuit is avoided, and the flaw detection device can be widely applied to the fields of manufacturing and overhauling of railway vehicles.

Description

technical field [0001] The invention relates to railway vehicle maintenance equipment, in particular to a buffer spring flaw detection device. Background technique [0002] The buffers used in various types of railway freight repair vehicles generally include two types: MT and ST, which are mainly used for braking and shock absorption of railway vehicles. In order to ensure the safe operation of railway vehicles, the flaw detection of buffer springs is very important. [0003] At present, the circumferential magnetization method of the existing spring magnetic particle flaw detection machine (such as CJW-1000 flaw detection machine) is the circumferential magnetic pole piercing rod method, and the contact method of the circumferential magnetic pole piercing rods at both ends is pneumatic clamping point contact. . The loading and unloading mechanism is controlled by the cylinder, and the direction and stroke are relatively fixed. Its magnetization circuit is a phase-shift ...

AI Technical Summary

Problems solved by technology

Practice has shown that the circumferential magnetic pole threading rod of this device is easy to get stuck, resulting in unstable flaw detection effect and quality, which brings great safety hazards

Moreover, its loading and unloading mechanism is inconvenient to control, resulting in unstable magnetization effect

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