| 摘要 |
A fall prevention apparatus is provided to enlarge a contact area between a threshold and a rail to improve a brake performance. A fall prevention apparatus includes an inner roller(202), an outer roller(201), two side plates(601a), and hooks(101a). The inner roller is in contact with an inner side of a rail. The outer roller is in contact with an outer side of the rail. The two side plates are attached to the inner roller and the outer roller, and parallelly opposite to each other through the medium of the rail. The hooks are inserted into a space provided by the side plates and the rail to be coupled with the side plates by a pin. |
