Based on discussion of the screw hoist with moving screw pair and the screw hoist with rolling screw pait,a new type of ball screw hoist is introduced in the paper.

• 讨论了滑动螺旋副和滚动螺旋副螺杆式启闭机的特点及不足，介绍了一种新型滚珠螺杆式启闭机。