Ground coaster with self -lubricating function

The utility model provides a ground coaster with self -lubricating function, includes frame, axis of rotation, first pulley, second pulley, third pulley, batch oil tank and oil outlet, the batch oil tank sets up on the frame, the batch oil tank is connected with the axis of rotation, set up the lubricating oil passageway in the axis of rotation, the lubricating oil passageway links to each other with the oil -out of batch oil tank, the surface of axis of rotation sets up the oil outlet, the oil outlet is linked together with the lubricating oil passageway. The utility model discloses have theself -lubricating function, rational in infrastructure, convenient to use can improve the lubricated degree between axis of rotation and the pulley, the reduce friction resistance, the utility model discloses a cross sectional view of the parallel side of pulley and axis of rotation is the U -shaped notch, is favorable to preventing the rope release phenomenon, is favorable to improving the safetyin utilization, the utili