本文针对海洋开发和渔业捕捞用的装卸输送装置为减小其动力系数进行概略研讨.并提出一种带差动减速器的张紧装置方案,通过实验证明,它使装卸输送装置上的缆索收放时均能保持恒定张力,还可降低动态载荷系数.这种方案不仅提高了装置的安全性,而且使装置的重量和外形尺寸减小20～25%. In this paper, aiming at the research and development of marine loading and unloading conveying devices for fishing and fisheries, a brief discussion is made on reducing the dynamic coefficient of the device, and a tensioning device with differential speed reducer is proposed. It is proved by experiment that the cables on the loading and unloading conveying devices When placed in a constant tension, but also reduce the dynamic load factor.This solution not only improves the safety of the device, but also to reduce the weight and form factor of the device 20 ~ 25%.