| 摘要 |
PURPOSE: A hoist having reverse rotation preventing function is provided to reduce manufacturing costs, assembly procedures and an overall size of the hoist by employing a small deceleration device and eliminating the need of an additional brake device. CONSTITUTION: A hoist comprises a traveling unit(100) rolling along a rail, and an elevating unit(200) coupled beneath the traveling unit and which moves the height material fixed to a hook(20) in upward and downward directions. The elevating unit includes an elevating driving motor for generating a power; a decelerator unit accommodated into a decelerator case coupled to the elevating driving motor; and a winding unit including a main frame coupled with the decelerator unit, and a drum member wound with a rope. An output shaft of the decelerator unit is coupled to the drum member, and the rope is wound or unwound to or from the winding unit when the output shaft rotates. The decelerator unit includes an input member, a thrust bearing, an input side bearing, a bevel gear forming member, an output member, a gear forming protrusion and an output side bearing. |
