Coal mine tunnel trolley blocking device

The utility model discloses a coal mine tunnel trolley blocking device. The device is used for blocking a trolley which slides down in a coal mine tunnel; a foundation pit is dug down between two trolley tracks which are parallel to each other in the tunnel, wherein the base of a hydraulic cylinder is fixedly arranged on the bottom of the foundation pit, and the cylinder body bottom of the hydraulic cylinder is connected with the base of the hydraulic cylinder through a hinge; a first transverse rod which is perpendicular to both the two trolley tracks is fixedly arranged at the upper edge of the foundation pit; one end of a longitudinal rod is connected with the middle part of the first transverse rod through a hinge; the other end of the longitudinal rod is fixedly arranged on the middle part of the second transverse rod and is perpendicular to the longitudinal rod; the end of a piston push rod of the hydraulic cylinder is connected to the middle part of the longitudinal rod through a hinge; when the piston