Head piece dredging device of raw coal belt conveyor

The invention relates to a head piece dredging device of a raw coal belt conveyor. The head piece dredging device is arranged on a bar lower sliding chute below head piece bars, and consists of an electro-hydraulic push rod, a connecting rod, a transmission shaft, a force arm, a dredging plate base and dredging plates, wherein the electro-hydraulic push rod is fixed at the outer part of the bar lower sliding chute; the connecting rod is movably connected to a piston rod of the electro-hydraulic push rod; the transmission shaft is arranged on a side plate of the bar lower sliding chute, and the outer side end of the transmission shaft is fixedly connected with the connecting rod; one end of the force arm is fixedly connected to the inner side end of the transmission shaft, and the other end of the force arm is fixedly connected with the dredging plate base; a plurality of dredging plates are fixedly connected to the dredging plate base along the direction of the head piece bars; and the mounting positions of t