本发明涉及一种提升牵引、拖运设备，具体为可无级变速的绞车。
The invention relates to hoisting, pulling, hauling equipment, in particular to an infinite variable speed hoisting winch.
带式行星齿轮无级变速器实质上是一种可无级变速的封闭式差动轮系。
In essence the belt planetary gear continuously variable transmission is a planetary differential train the speed of which is adjustable.
摩托车V带自动无级变速系统广泛用于坐式摩托车上，不同形式的V带自动无级变速系统实现自动无级变速的具体结构型式是不同的。
V-belt automatic stepless gear system is widely used for motor scooters. Stepless speed change varies with different types of V-belt automatic stepless systems.
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