Automatic pantograph of underground rail transportation unmanned electric locomotive

The invention relates to an automatic pantograph of an underground rail transportation unmanned electric locomotive. The automatic pantograph is composed of a gas circuit power system, a pantograph system, an in-place detection system and the like; the gas circuit power system is composed of an electromagnetic valve and a pressure regulating valve; the electromagnetic valve is used for controllingthe output of power; the pressure regulating valve is used for regulating the magnitude of outputted power; the pantograph system is composed of a T-shaped pantograph and an air cylinder; the T-shaped pantograph contacts with an overhead line in a rolling shaft mode to provide electric energy; a bearing support is arranged in the middle of the T-shaped pantograph, the pantograph can swing freely;a balance weight is additionally arranged at the bottom of the pantograph; the air cylinder is automatically adjusted, so that the lifting of the pantograph is achieved; the air cylinder is a double-acting air cylinder and is