Coal cleaning device for fully mechanized coal mining face of coal mine

The utility model discloses a coal cleaning device for a fully mechanized coal mining face of a coal mine, which relates to the technical field of coal cleaning for the fully mechanized coal mining face of the coal mine and comprises a support base, a protective plate, a protective box and a motor, and a main chain wheel is fixedly arranged at the output end of the motor. A pair of threaded rods is arranged in the support base in a sliding mode, the threaded rods are both connected with the protection box in a sliding mode, and auxiliary chain wheels are arranged on the threaded rods in a threaded mode. Through cooperative use of the threaded rod and the auxiliary chain wheel, when a working face is cleaned, the threaded rod can be driven to extend through rotation of the auxiliary chain wheel, the shovel plate is pushed to clean coal slag on the working face, through cooperative use of the limiting rod and the limiting hole, when the shovel plate is damaged, the limiting rod is taken out, limiting of the lim