Locomotive and dual mode brake control system thereof

Abstract

The invention discloses a dual mode brake control system of a locomotive. The dual mode brake control system of the locomotive comprises a relay valve and a pressure equalization controller, and further comprises a mode change-over valve, an electrical interlocking change-over cock and a brake controller. When the electrical interlocking change-over cock is in a triggered state, the air inlet and the air outlet thereof communicate with each other, otherwise the air inlet and the air outlet thereof are cut off; and when the electrical interlocking change-over cock is triggered, the brake controller enables the air outlet and the second air inlet of the mode change-over valve to communicate with each other, otherwise the air outlet and the first air inlet of the mode change-over valve are enabled to communicate with each other. In this way, the brake controller can control the braking modes of the mode change-over valve under the state change-over of the electrical interlocking change-over cock, and thus free switching between the independent braking mode and the backup braking mode can be realized. Compared with the prior art, a backup brake controller as well as an additional air circuit does not need to be separately provided for the backup braking mode, so that an extra space is not occupied, and wiring complexity of the brake system is lowered. The invention also discloses the locomotive comprising the dual mode brake control system. The beneficial effects are as above.

Description

technical field [0001] The invention relates to the technical field of locomotives, in particular to a dual-mode brake control system for locomotives. The invention also relates to a locomotive comprising the dual mode brake control system described above. Background technique [0002] With the development of rail transit in China, more and more rail locomotives have been widely used. [0003] A locomotive is a self-propelled vehicle that pulls or pushes railway vehicles and does not carry a commercial load. The locomotive uses the power generated by steam engine, diesel engine, traction motor or other power machinery, and drives the driving wheel (drive wheel) through the locomotive transmission device, and generates driving force by means of the adhesion between the driving wheel and the rail, that is, the traction force of the locomotive. The traction generated by the locomotive overcomes the resistance of the train and can drag a train that is 10 or 20 times larger tha...

AI Technical Summary

Problems solved by technology

However, the independent backup brake controller not only occupies the limited space of the driver's cab operating console, but also is not conducive to the driver's operation, and the mechanically controlled backup braking method needs to lead the control pipeline from the brake machine to the operating console, which increases the Layout difficulty and hidden trouble

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