| 摘要 |
Disclosed is a trolley driving along a rail, after receiving driving work. The trolley according to an embodiment of the present invention comprises: a wheel with a rolling motion in contact with the rail; a body part supporting the wheel; and an operation part delivering driving power to at least one wheel, wherein at least one of the wheels has a screw thread. The operation part comprises: a first gear engaged with the screw thread of the wheel and connected to an output shaft; and a gear unit switching a rotation of a input shaft caused by the driving power inputted by a handle unit, to the rotation of the output shaft. |
