Small rail car

The utility model discloses a small rail car, including dolly railway carriage or compartment frame and little wheel, two sides of the left and right sides of dolly railway carriage or compartment frame be equipped with be used for with conveyer belt complex motorized pulley, motorized pulley moves by installing in the current collector power supply of dolly railway carriage or compartment frame and making motorized pulley drive the conveyer belt, two sides are equipped with and decorated the cab apron around the dolly railway carriage or compartment frame, are equipped with material baffle ondecorating the cab apron, and two sides of bottom of dolly railway carriage or compartment frame are equipped with little wheel, and little wheel moves along with the moving trajectory of chain on the letter sorting track, little wheel coaxially is equipped with the bearing frame, is equipped with little wheel alignment cover between little wheel and bearing frame. The beneficial effects of the utility model are that: dr