An online detection system for train wheel set size and runout tolerance

Abstract

The invention relates to an online detection system for train wheel set size and runout tolerance. The mechanical system is composed of a base, a gantry frame, a wheel set conveying device, a wheel set positioning reference support device, a wheel set rotation driving device, and a high-precision moving detection device. It is characterized in that: a gantry frame, a wheel set conveying device, a wheel set positioning reference support device, and a wheel set rotation driving device are installed on the base; a high-precision movement detection device is installed on the gantry frame; the outer surface of the journal is used as the radial positioning The benchmark is more in line with the actual working conditions of the train; the axial self-locking device is adopted to ensure that the position of the wheel set does not shift during the measurement of the wheel set rotation; the control system uses servo motor control and an absolute grating displacement feedback system to form a closed-loop control system , to ensure accurate control of the measurement position of the laser displacement sensor, and to improve the repeatability of the system; it can ensure high detection accuracy, high repeatability and meet the purpose of the production cycle of the enterprise.

Description

technical field [0001] The invention relates to an online detection system for the size and runout tolerance of a train wheel set, and belongs to the technical field of on-line non-contact measurement of train wheel sets. Background technique [0002] The train wheel set is an important part of the vehicle bogie. The wheel set not only bears all the static and dynamic loads of the high-speed and heavy-duty train, but also directly determines the safety and quality of the vehicle operation. Today, with the development of railway vehicles in the direction of high speed, heavy load and light structure, higher requirements are put forward for the manufacturing quality of wheel sets. [0003] At present, domestic rail passenger car manufacturers are mostly in the stage of manual measurement in terms of the quality inspection of train wheel sets. The wheel rotation and wheel set parameter records during the train wheel set detection process are also done manually. Manual measurem...

AI Technical Summary

Problems solved by technology

When the detection device is working, the image of the light band (intersection line between the light section and the wheel) collected by the CCD camera should be a curve in theory, but in fact the image collected by the CCD camera is a wider light band, which cannot A lot of noise is avoided, which makes the measurement result have a large detection error

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