Device for detecting scratch and out-of-roundness of wheel thread on line

Abstract

The invention discloses a device for detecting scratch and out-of-roundness of a wheel thread on line. The device comprises a working track (1) and a track clamping block (2), wherein a detection device (3) is arranged on the upper side of the track clamping block (2) and comprises a housing (4); a rocking arm bracket (5) and a rocking arm swing rod (6) are arranged in a cavity in the housing (4); the rocking arm swing rod (6) is embedded between the upper side of the rocking arm bracket (5) and an upper housing of the housing (4); the front end of the rocking arm swing rod (6) extends from the housing (4) to the working track (1); a measuring rod (7) is arranged at the front end of the rocking arm swing rod (6); a drive gear (8) fixedly connected and coaxial with the rocking arm swing rod (6) is arranged at the rear end of the rocking arm swing rod (6); a driven gear (9) connected with the drive gear (8) in an engaged way is arranged on the outer side of the drive gear (8); and a rotary encoder coaxial with the driven gear (9) is arranged on the driven gear (9). The device is high in detection precision, good in stability and wide in application range.

Description

technical field [0001] The invention relates to the technical field of vehicle wheel state detection, in particular to an on-line detection device for wheel tread scratches and out-of-roundness with high detection accuracy and good stability. Background technique [0002] The wheel set is a key part of the running mechanism of the train vehicle, and the state of the wheel set directly affects the running safety of the vehicle. At present, due to many reasons, the braking force is too large during the operation of the vehicle, the brake is too tight, and the abrasion of the wheel sliding on the rail surface is not a circular surface but a plane or an approximate plane, forming a "flat wheel", causing the vehicle to run. Severe impact affects the safety and service life of trains and tracks, and is a very dangerous defect. At present, there are many kinds of methods for detecting scratches and out-of-roundness in China, including sound detection, acceleration detection, elec...

AI Technical Summary

Problems solved by technology

At present, due to many reasons, the braking force is too large during the operation of the vehicle, the brake is too tight, and the abrasion of the wheel sliding on the rail surface is not a circular surface but a plane or an approximate plane, forming a "flat wheel", causing the vehicle to run. Severe impact affects the safety and service life of trains and tracks, and is a very dangerous defect

At present, there are many kinds of detection methods for scratches and out-of-roundness in China, including sound detection method, acceleration detection method, electrical signal detection method and contact measurement detection method. In actual operation, there are many external interference factors, which affect the quality and accuracy of detection.

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