Pneumatic wiper control device for vehicle

Abstract

A pneumatic window wiper control device for a vehicle comprises an air storage tank, an air compressor, a one-way valve, an engine, an air pipe, a manual reversing valve, a driver, a window wiper anda pneumatic control reversing valve. An air inlet P of the pneumatic control reversing valve communicates with the air storage tank, an execution port A of the pneumatic control reversing valve communicates with an air inlet P of the manual reversing valve, a control port K of the pneumatic control reversing valve is communicated with an air outlet of the air compressor, and an air outlet T of the pneumatic control reversing valve communicates with the atmosphere. When pressure gas is introduced into the control port K of the pneumatic operated directional valve, the air inlet P of the pneumatic operated directional valve communicates with the execution port A. When the vehicle is shut down, the vehicle can be started even if the manual reversing valve is forgotten to be closed.

Description

technical field [0001] The invention relates to a vehicle, in particular to a vehicle pneumatic wiper control device. Background technique [0002] When the vehicle runs in an environment with flammable gas, the electrical components on the vehicle need to have an explosion-proof function. Due to the large size and high cost of explosion-proof electrical components, vehicles that operate in an environment with flammable gas often use pneumatic The system, such as the pneumatic system of the explosion-proof engine trackless rubber-tyred vehicle disclosed in Chinese patent document CN205086691U (application number 201520923719.2), can complete the starting of the engine, vehicle braking, adjustment of exhaust gas treatment, control of the accelerator pedal and control of the horn through the pneumatic system. The air inlet of the air storage tank 1 of the pneumatic system of the explosion-proof engine trackless rubber-tyred vehicle is connected to the air compressor 2 inside t...

AI Technical Summary

Problems solved by technology

This kind of pneumatic wiper control device must close the valve manually and manually reversing valve 11 after the vehicle is turned off (so that the air inlet P of the manual reversing valve 11 is not connected to the execution port A), this is because if the driver turns off the vehicle Finally, forget to close the manual reversing valve 11, so that the manual reversing valve 11 is in the open state, that is, the air inlet P of the manual reversing valve 11 is still connected to the execution port A. At this time, the crankshaft of the engine 4 no longer rotates, and the engine 4 No longer drives the air compressor 2 to rotate, the air compressor 2 no longer delivers pressure gas to the air storage tank 1, and the pressure gas in the air storage tank 1 will continue to enter the air inlet P of the driver 12 through the manual reversing valve 11 That is to say, after the vehicle is turned off, the driver 12 can still drive the wiper 13 to work. After the wiper 13 works for a period of time, the pressure gas in the gas storage tank 1 will be used up. When the vehicle needs to be restarted, it needs to The gas storage tank 1 supplies pressure gas to the pneumatic components of the gas starting system of the vehicle through the gas pipe 5. Since the pressure gas in the gas storage tank 1 has been used up, the vehicle will not start

That is, the pneumatic wiper control device of the prior art forgets to close the manual reversing valve 11 when the engine is turned off, and the vehicle cannot be started.

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