The utility model can drive a wire rope through the combination of a swinging mounting, a stationary wire spool, a gearwheel disk, a fixed tray, a pinion, a motor, etc. to attain automatic elevating.

它通过转动支架、固定绕线盘、大齿轮盘、固定盘、小齿轮和电 机等进行组合带动钢丝绳实现自动升降。

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Usually the same belt drives the alternator, and belt tension is adjusted by swinging the alternator on its mounting.

这根皮带一般也驱动交流发电机工作，皮带的张紧度通过在支座上摆动发电机的位置来进行调整。

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