Lifting drum structure capable of effectively reducing gauge of trolley

The utility model belongs to the technical field of hoisting machinery, and particularly relates to a hoisting drum structure capable of effectively reducing the gauge of a trolley, which comprises a trolley frame and a drum body, a steel wire rope is fixed in a winding groove on the outer wall of the drum body through a limiting unit, and the drum body is mounted on the trolley frame through a first supporting unit and a second supporting unit. A speed reducer and a bearing seat are installed on the left side and the right side of the upper surface of the trolley frame correspondingly, the first supporting unit comprises a first supporting plate fixedly connected to the left side of the inner wall of the winding drum body, and an output shaft of the speed reducer is connected with the first supporting plate through a winding drum coupler; the second supporting unit comprises a second supporting plate fixedly connected to the right side of the inner wall of the winding drum body and an end supporting plate fi