Lower-contact type metro contact rail detecting system

Abstract

The invention relates to the technical field of rail detection, in particular to a lower-contact type metro contact rail detecting system. The lower-contact type metro contact rail detecting system comprises a detecting system body and a power system used for supplying power to the detecting system body. The detecting system body comprises an encoder, a laser photoelectric sensor, a vision sensor, an upper computer, a distance measuring sensor and a programmable controller. The encoder is connected with the programmable controller, the laser photoelectric sensor is connected with the vision sensor and the programmable controller through signals, and the vision sensor is connected with the upper computer and the programmable controller. The lower-contact type metro contact rail detecting system is simple in structure, detection parameters are visual and effective, a detection method is simple, the response speed is high, and the earlier-stage characters of contact rail faults can be reflected; manual detection is replaced by automatic detection, the number of workers is small, the labor intensity is reduced, and work can be completed only with one person.

Description

technical field [0001] The invention relates to the technical field of track detection, in particular to a lower contact type metro contact rail track detection system. Background technique [0002] The maximum cross-sectional area of ​​the lower contact subway contact rail is about 0.01 square meters, and the single length is about 15 meters. 90-120 meters is a riveting section. In the middle of the riveting section is an expansion joint, and other positions are movable head brackets at intervals of about 5 meters. The length-to-diameter ratio of the contact rail is large, and it is prone to deformation under the influence of factors such as work, ambient temperature, and external force. The initial manifestation of faults caused by the deformation of the contact rail is that the bracket tilts left and right, which in turn leads to damage to the bracket. Therefore, if the problem is found as early as possible in the early stage of bracket deformation, it is of great signif...

AI Technical Summary

Problems solved by technology

At present, the detection of contact rails is carried out by manual walking and visual inspection, with low detection speed and poor accuracy (the normal walking speed of a person is 3-5KM / hour, and a lot of auxiliary time is needed)

Most of the existing contact rail detection vehicles / devices / systems detect the horizontal and vertical distance between the inner side of the adjacent running rail and the contact rail flow receiving surface, and read the detection data in real time. The detection data is not recorded, stored, or analyzed, which cannot be realized For off-line analysis and prediction, this type of inspection vehicle / device / system is mostly used in the installation of contact rails. For example, a Chinese patent discloses a trolley for detection of contact rails, patent number: 201410226931.3, to ensure the installation quality of contact rails. Mechanical inspection, but this kind of inspection vehicle is used on track installation and is not suitable for later inspection. If it is used in maintenance and repair, when the parameter is detected to be out of tolerance, the bracket has already had a problem

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