Carriage passenger door control system

2013 
The utility model aims at solving the technical problems in the prior art that, traditional passenger doors are not sensitive in anti-clamping property and poor in reliability, and is complicated to be opened when not powered on in emergency cases. In order to solve the above problems, the utility model provides a carriage passenger door control system, which comprises a gas tank. The gas inlet of the gas tank is provided with a one-way valve. The gas outlet of the gas tank is connected with a pressure switch. The system also comprises a hand-operated button valve. One end of the hand-operated button valve is connected with the gas outlet of the gas tank, and the other end of the hand-operated button valve is connected with a solenoid valve. The solenoid valve is configured to drive a cylinder. The cylinder is connected with a differential pressure sensor. The cylinder is also matched with a travel switch. According to the technical scheme of the utility model, the carriage passenger door control system is sensitive in anti-clamping property and is higher in anti-clamping reliability. When a passenger door is not powered on, the passenger door can be automatically opened from either inside or outside in emergency.
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