An air-electric braking system for freight trains

Abstract

The invention relates to a pneumatic-electric braking system for a goods train. An air brake system is additionally provided with a pneumatic power generating module and an electric control dynamic adjustment module, wherein the air brake system is suitable for conventional goods trains and is composed of a train pipe, a 120# distribution valve, a braking cylinder, an auxiliary air cylinder, an acceleration relief air cylinder and a mechanical empty and heavy vehicle adjusting assembly, and the mechanical empty and heavy vehicle adjusting assembly is composed of a mechanical proportional valve, a weight measuring mechanism and a pressure reduction air cylinder; the pneumatic power generating module is composed of an air storage cylinder assembly, a pneumatic power generator and a storage battery unit, and the storage battery unit comprises a storage battery and a management system; the electric control dynamic adjustment module is composed of a brake electronic control unit, a switching electromagnetic valve, a proportional electromagnetic valve, a relay valve and sensors; and the pneumatic power generating module is used for supplying power to the electric control dynamic adjustment module, and pneumatic-electric braking is finally achieved. Compared with the prior art, the pneumatic-electric braking system for the goods train can meet the requirement for precise control over braking under no-load or heavy-load conditions and has the advantages of skid resistance and high sensitivity.

Description

technical field [0001] The invention relates to a braking system for freight trains, in particular to an air-electric braking system for freight trains. Background technique [0002] In view of the fast and heavy-duty development of railway freight cars, the requirements for the control of the train braking system are also getting higher and higher. From the anti-skid design of high-power braking to the adjustment of the huge difference in the braking force of empty and heavy vehicles, as well as the formation of mixed trains and long trains, the existing mechanical control is difficult to meet the requirements of improving braking performance, and electronic control methods are urgently needed . [0003] Under the condition that the existing freight trains are difficult to implement the cable power supply operation of fixed marshalling trains, for the original train air brake basic mode, an electronic control unit, a solenoid valve and a relay valve for flow amplification ...

AI Technical Summary

Problems solved by technology

[0004] The development of brake control technology is severely limited due to the absence of electricity for existing trucks

For example, Chinese patent 201610019048.6 discloses an air brake system for freight trains, which can meet the braking requirements of freight trains under different load conditions through the setting of auxiliary brake pipelines, and has low pressure air loss, brake shoe The amount of wear and the wear of the wheel tread are small, but it is still limited to the air brake system and cannot completely overcome the defects of the air brake

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