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[CN 202011017380.1] Control system and control method for eliminating overcharge of three-pressure mechanism
[CN 202011017380.1] A Three-pressure Mechanism Over-charge Elimination Control System and Control Method Title: A Three-pressure Mechanism Over-charge Elimination Control System and Control Method Application Number: CN 202011017380.1 Applicant: CRRC Zhuzhou Electric Locomotive Co., Ltd. Application Date: 2020-9-24 Patent Type: Invention Application The present invention discloses a three-pressure mechanism over-charge elimination control system and control method, in the three-pressure mechanism overcharge elimination control system, the inner cavity of the three-pressure mechanism is connected with the volume air cylinder; the train pipe and the brake cylinder are connected with the volume chamber of the three-pressure mechanism; it also includes a first valve, a synchronous air cylinder and The second valve, the volume air cylinder is connected with the first port of the synchronous air cylinder through the first valve, and the second port of the synchronous air cylinder is connected with the second valve; the first valve is used to conduct after delaying the set time T1 from the time when the EMU sends out the emergency braking release command, and to cut off after delaying the set time T2 from the conduction time. The second valve is used to conduct after delaying the set time T3 from the time when the EMU sends out the emergency braking command, and to cut off after delaying the set time T4 from the conduction time. The invention can quickly and automatically reduce the pressure of the volume chamber of the three-pressure mechanism after the train tube is overcharged, solve the problem that the overcharge of the three-pressure mechanism is not timely, save time and effort, and avoid affecting the operation efficiency of the vehicle line.
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