Mechanical signal modulation device for line shape detection of railway girder of light railway

Abstract

The invention relates to a mechanical signal modulation device in line shape detection of a railway girder of a light railway, which is a mechanical signal modulation device which is used for converting geometrical unevenness in space distribution of the railway girder into a time domain signal by adopting a remote elevation measurement method. The mechanical signal modulation device is provided with a travelling wheel which is supported by a rocker and the rocker is supported on a bearing pedestal through a shaft; the other end of the rocker is in higher pair connection with one end of a plate spring; the other end of the plate spring is connected to the bearing pedestal through an adjusting block; and one end of the shaft which is supported on the bearing pedestal and rigidly connected with the rocker is provided with a friction damper, and the other end of the shaft is rigidly connected with an angle encoder. According to the invention, by arranging the friction damper and adopting the plate spring structure, the response speed of the mechanical signal modulation device is reasonable, and the dynamic characteristic of the mechanical signal modulation device can be adjusted; in addition, the mechanical signal modulation device has the advantages of stable dynamic characteristic property and simple structure and is very suitable for a detection system for detecting the railway line shape of the light railway by adopting the remote elevation measurement method.

Description

technical field [0001] The invention relates to the alignment detection technology, in particular to a key mechanical device for signal modulation in the alignment detection of light rail track beams. Background technique [0002] The light rail track beam is not only a track for vehicles to travel, but also a load-bearing structure. The light rail track is composed of many beams with a height of 150cm, a width of 85cm, and a length of about 22 meters, which are fixed on the pier and abutment through the support and the anchor screw. When the anchor bolt loosens and the subgrade surface settles, the height of the staggered platform at the junction between the track alignment and the beam will change, thereby affecting the safety and comfort of train operation. Therefore, the efficient detection of light rail track beam alignment has always been a major problem for light rail operation and management departments. [0003] A technology similar to the efficient realization o...

AI Technical Summary

Problems solved by technology

However, the existing systems, such as Japan's 921-41 rail inspection system, are usually determined once the design, processing and debugging are completed, and their dynamic characteristics are determined, which is not suitable for detecting the irregular alignment of light rail track beams.

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