The fan is usually mounted on an extension of the water pump shaft and is driven by V-belt from a pulley mounted on the front end of the cramshaft.
风扇常常装在水泵轴的伸出物上，由安装在曲轴前段的滑轮上的v带驱动。
2
A large belt pulley (7) on the film picking main shaft (26) transmits the reinforced rotation speed to a fan main shaft (27) through a second-stage belt (8).
挑膜主轴(26)上的大皮带盘(7)通过二级皮带(8)将加强的转速传到风机主轴(27)。
3
If choose small belt pulley, it may enlarge the transmission of texrope. The ends of fan of dual-axes motor are only allowed to transmit by coupler.