Digital display measuring device for subway contact rail

Abstract

The invention discloses a digital display measuring device for a subway contact rail. The device comprises a supporting base. A measuring guide rail is fixedly mounted on the supporting base. A sliding measurement platform is mounted on the measurement guide rail in a sliding fit manner. A vertical supporting rod is fixedly installed at the left end of the sliding measurement platform, a first digital caliper is horizontally installed on the front side face of the sliding measurement platform, a second digital caliper is vertically installed on the left side face of the vertical supporting rod, and the first digital caliper and the second digital caliper are electrically connected with a first digital caliper display part and a second digital caliper display part respectively. The device is reasonable in structural design, and the contact rail measurement operation can be efficiently completed, and measurement of contact rail height and pull-out value of different sections can be satisfied. The device is light in weight, easy to disassemble, low in manufacturing cost, simple and practical, manual reading of traditional measurement is changed into data directly reflected in a digital display scaleplate interface, errors caused by manual reading are avoided, the measurement precision is guaranteed, and the measurement efficiency is improved.

Description

technical field [0001] The invention relates to the technical field necessary for the measurement of the guide height and pull-out value of a subway contact rail, in particular to a digital display measuring device for a subway contact rail. Background technique [0002] In the measurement of the guide height and pull-out value of the subway catenary rail, two tools, the subway catenary rail inspection vehicle or the catenary rail measuring ruler, are usually used at present. The subway catenary rail inspection vehicle has disadvantages such as high cost, heavy structure, and slow measurement efficiency. Therefore, more portable contact rail measuring rulers are used. The contact rail has the characteristics of low working surface, and its guide height (that is, the vertical distance from the rail surface to the rail surface) is about 200mm. It is required that the installation accuracy error be controlled within ± 3mm. Use the contact rail When measuring the track ruler, th...

AI Technical Summary

Problems solved by technology

[0002] In the measurement of the guide height and pull-out value of the subway catenary rail, two tools, the subway catenary rail inspection vehicle or the catenary rail measuring ruler, are usually used at present. The subway catenary rail inspection vehicle has disadvantages such as high cost, heavy structure, and slow measurement efficiency. Therefore, more portable contact rail measuring rulers are used. The contact rail has the characteristics of low working surface, and its guide height (that is, the vertical distance from the rail surface to the rail surface) is about 200mm. It is required that the installation accuracy error be controlled within ± 3mm. Use the contact rail When measuring the track ruler, the surveyor usually needs to lean over to measure, and the measured data is overlooking data, which has a certain error with the real data, and the accuracy of the measurement data is difficult to guarantee

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