Control method and system of multi-locomotives

Abstract

The invention discloses a control method and system of multi-locomotives. The control method and system are used for multi-locomotives. The multi-locomotives comprise a brake control unit and a brake-cylinder control module. The control method comprises the following steps: the brake control unit receives a control instruction sent by a leading locomotive, generates a brake-cylinder pressure generation instruction according to the received control instruction, and sends the brake-cylinder pressure generation instruction to the brake-cylinder control module; the brake-cylinder control module outputs brake-cylinder pressure which is equal to the brake-cylinder pressure output by the leading locomotive to brake cylinders of the multi-locomotives according to the brake-cylinder pressure generation instruction, so that the brake cylinders of the multi-locomotives are controlled. According to the method, the multi-locomotives are unified to brake or relieve by the control instruction, and when the brake cylinders of the multi-locomotives are braked or relieved, multi-devices are not needed, the brake control unit and the brake-cylinder control module of the multi-locomotives directly brake or relieve the brake cylinders, so that the synchronism between the multi-locomotives and the leading locomotive is improved, and the running safety is guaranteed.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a method for controlling a double locomotive. The invention also relates to a control system of a double locomotive. Background technique [0002] With the rapid development of the railway freight business, the goods that need to be transported are getting heavier and heavier. In order to meet the demand for heavy-duty railway transportation, the method of multiple locomotives reconnecting traction is often used to transport goods. [0003] In the prior art, the control method of the heavy-duty locomotive is as follows: when the lead locomotive brakes or releases, the pressure of the brake cylinder of the lead locomotive changes, and at the same time, the pressure of the acting pipe connected to the brake cylinder of the lead locomotive also changes. Then there is a change, because the average pipe of the brake cylinder of the reconnected locomotive is connected to the a...

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Problems solved by technology

[0004] However, as the number of double-connected locomotives continues to increase, the number of brake cylinders of double-connected locomotives connected by the average pipe is also increasing, so that the length of the average pipe increases, resulting in the continuous increase of the pipeline volume, and the increase in volume It will cause the leakage of compressed air to increase accordingly. Since the average pipe pressure is transmitted through compressed air, and it takes a certain amount of time for the compressed air to be transmitted from the lead locomotive to each heavy-duty locomotive, it is easy to cause the brake release of the lead locomotive At that time, the rear locomotive needs to wait for a long time to reach the same brake cylinder pressure as the front locomotive, and the synchronization is poor; and the relevant standards have relevant regulations on the braking release time of the brake cylinder, so the existing technology The control method of the reconnection locomotive often fails to meet the standard requirements; at the same time, the average pipe pressure will have a pressure loss after passing through the reconnection valve and other valve components in the reconnection device, which may make the system of the rear reconnection locomotive after the balance The pressure of the moving cylinder cannot reach the pressure of the brake cylinder of the lead locomotive, which also reduces the synchronization between the heavy-duty locomotive and the lead locomotive. will affect driving safety

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