Tread sweeper

The invention relates to a tread sweeper, and relates to the technical field of railway mechanical equipment, the tread sweeper comprises a cylinder barrel, a moving piston, a piston sleeve and a sweeping head, a cavity is arranged in the cylinder barrel, the moving piston is slidably connected in the cavity, a driving device used for pushing the moving piston to move is arranged on the cylinder barrel, and the piston sleeve is located in the cavity; a piston sleeve is arranged in the cylinder barrel and fixed to the movable piston, a piston rod is arranged in the piston sleeve, a feeding device used for driving the piston rod to feed is arranged in the piston sleeve, and an adjusting device used for controlling the retraction amount of the piston rod when the piston sleeve retracts is further arranged in the piston sleeve. A cleaning head is arranged at one end of the piston rod extending out of the cylinder barrel. The tread sweeper has the effects that the extending amount of the sweeping head of the tread