Stroke control device for coal supporting bottom plate of coal charging car

The utility model belongs to the technical field of tamping coal charging cars, and particularly relates to a stroke control device of a coal charging car coal supporting bottom plate, which comprisesa carbonization furnace, a coal charging car track and a coal charging car, and a coal pushing device on the coal charging car pushes coal cakes formed by tamping on the coal supporting bottom platein the coal charging car into a corresponding carbonization chamber; an encoder is additionally installed on the coal pushing motor, a proximity switch is fixedly installed on the coal supporting bottom plate along the pushing track of the coal supporting bottom plate, a wireless communicator is arranged on the coal charging car, a wireless receiver is arranged on the outer side of the coal charging car, and the encoder and the proximity switch transmit stroke signals of the coal supporting bottom plate to the wireless receiver through the wireless communicator. Wherein the wireless receiver is connected with the PLC o