Protective device for safe mining of mine working face

A safe mining protection device for a mine working face comprises a protection component and a self-moving system. The protection component comprises vertical supporting components, every two vertical supporting components form a group, and every two vertical supporting component monomers are oppositely arranged. An adjusting plate is connected between the two vertical supporting components in a sleeved mode. A transverse sliding groove is formed in the supporting plate, a first hydraulic cylinder is arranged in the sliding groove in a sliding mode, and column feet are arranged on the bottom face of the first hydraulic cylinder. A second hydraulic cylinder is fixedly arranged on the supporting plate, a piston of the second hydraulic cylinder is fixedly connected with a third hydraulic cylinder, and a piston of the third hydraulic cylinder is fixedly connected with a column foot on the bottom face of the first hydraulic cylinder. According to the utility model, various problems in the safety work of the underg