求翻译：绞车在传动系统中一般设置了齿轮离合器和锥形摩擦制动器，除个加紧型绞车可以自由回绳并可以防止钢丝绳散外，其余所有绞车回绳速度和工作牵引速度是相同的。因此绞车用于回柱放顶，还有用于搬运设备，工作效率低。随着矿山机械化的发展，综采设备的频率搬迁，但由于用绞车搬运，占用人太多，因此该类绞车应设置快速回绳或自由回绳是什么意思？

Gear clutch cone friction brake winch is generally set in the transmission system, in addition to a stepping up type winch can be freely back to the rope and can prevent the rope loose, all the rest of the winch back rope speed and traction speed is the same. The winch is used to prop caving, as wel

Winches on the transmission system in the General Settings and gear clutch cone friction brake, in addition to a free back-winches can be brought to justice and to prevent thermal wire rope hoist, all of the remaining work to bring speed and traction at the same rate. It is therefore used to winch o

The winch has established the tooth clutch and the cone-shape friction brake generally in the transmission system, may return to the rope freely besides the step-up winch and may prevent the steel wire disperses, other all winches return to the rope speed a

Winch drive system of the General set of gear clutch and brake friction Cone, in addition to a winch can free back to the ropes and can prevent outside the wire rope, rest all speed and traction winch rope speeds is the same. Winch for column top back, also used for handling equipment, low efficienc