Alternating-current contact network and direct-current contact network double-power-supply steel rail flaw detection vehicle

Abstract

The invention discloses an alternating-current contact network and direct-current contact network double-power-supply steel rail flaw detection vehicle. The vehicle comprises a vehicle body and a traction power supply system installed in the vehicle body. The traction power supply system comprises an alternating current pantograph and a direct current pantograph, the output end of the alternatingcurrent pantograph is connected with an AC protection device, the output end of the AC protection device is connected with a traction transformer, and the output end of the traction transformer outputs two paths of AC830V and then is connected with a traction converter cabinet; the output end of the direct current pantograph is connected with a DC protection device, and the output end of the DC protection device is connected with a traction current transformer cabinet. The vehicle can perform high-speed, comprehensive and accurate flaw detection on subway steel rails, can be suitable for powersupply of an alternating-current contact network and a direct-current contact network, improves the flaw detection efficiency of the steel rails, widens the application range of the steel rails, andimproves the operation safety of subways.

Description

technical field [0001] The invention belongs to the technical field of track engineering vehicle manufacturing and railway detection, and in particular relates to a rail flaw detection vehicle with double power supply for AC catenary and direct current catenary. Background technique [0002] At present, the flaw detection of subway rails is still mainly carried out manually using rail flaw detectors. The labor intensity is high, the efficiency is low, and it is not comprehensive enough, and the problems existing in the track cannot be found in time, which brings great safety hazards to the operation of the subway. Therefore, there is an urgent need for a fast, comprehensive and accurate subway rail flaw detection equipment. [0003] The rapid development of urban rail transit at home and abroad, the early line power supply is mainly based on DC1500V DC catenary power supply, in recent years, with the rapid economic development, the rapid integration of the main urban area a...

AI Technical Summary

Problems solved by technology

Considering the efficiency and loss of the power supply system, most of these lines adopt the AC 25kV catenary power supply system. Large-scale testing equipment such as rail flaw detection vehicles are not universal, resulting in waste of equipment

Moreover, the running speed and detection speed of traditional rail flaw detection vehicles are relatively low. In the relatively tense subway operation skylight period, high-speed rail flaw detection vehicles are particularly necessary.

[0004] In addition, the current mainstream rail flaw detection vehicles are still driven by internal combustion power. Although the technology is mature and the operation is flexible, it also has relatively prominent shortcomings. Flaw detection accuracy

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