Door opening and closing anti-pinch system of bus door

Abstract

The invention discloses a door opening and closing anti-pinch system of a bus door. The door opening and closing anti-pinch system of the bus door comprises a door opening and closing air cylinder, and a left cavity and a right cavity of the door opening and closing air cylinder are separately connected with a reversing valve through two one-way throttle valves; a left surface control opening of the reversing valve is separately connected with a door closing button for a driver and a door closing button for a conductor through shuttle valves; and a right surface control opening of the reversing valve is separately connected with the shuttle valves and a double pressure valve through the shuttle valves, the shuttle valves are separately connected with the door closing button for the driverand the door closing button for the conductor, the double pressure valve is separately connected with a stroke reversing valve and a pressure sequence valve, the stroke reversing valve and the pressure sequence valve are connected with an air source, an outer control opening of the pressure sequence valve is connected between the one-way throttle valves and the air cylinder, the stroke reversing valve is mounted at a final position in which a piston rod of the door opening and closing air cylinder extends, and the reversing valve, the various door closing buttons and the various door opening buttons are connected with the air source. According to the door opening and closing anti-pinch system of the bus door, an air control type is adopted, when an obstacle is suffered during door closing,the bus door is automatically opened, and the action of safety protection is achieved.

Description

technical field [0001] The invention belongs to the technical field of buses, and in particular relates to a door opening and closing anti-pinch system of a bus door. Background technique [0002] With the rapid growth of my country's national economy, the improvement of people's living standards, and more and more private cars, traffic congestion has become one of the most difficult problems in urban management. Governments at all levels are advocating green travel and public transportation. It is the most important public transportation in the town. When the bus driver opens and closes the door, he mainly judges whether the passengers have got on and off the bus completely according to his own observation, and then presses the corresponding button to open or close the door. However, when there are many passengers on the bus, the driver may not be able to clearly observe the situation of passengers getting on and off the bus. If the passenger is still getting off the bus, t...

AI Technical Summary

Problems solved by technology

However, when there are many passengers on the bus, the driver may not be able to clearly observe the situation of passengers getting on and off the bus. If the passenger is still getting off the bus, the driver suddenly presses the door-closing button and pushes the passenger off the bus forcibly, which will be very dangerous; existing bus doors open and close The system mainly includes two types of electric control and air control, but it mainly performs simple door opening and closing control, and does not have safety protection functions.

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