指出管式捻股机张力控制系统和工字轮框架锁紧装置存在的问题。

The existing problems of tensile control system of tubular strander and locking device of frame of spool are pointed out.

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这可让额外的小自行车框架由后方进行安装(可以使更多的帧之间的房间时，管笼被删除)车后部机架和防止了笼式自行车架损害。

This lets extra small bike frames to be carried by a rear mounted car racks (by allowing more room between the frame tubes when cages are removed) and prevents cage damage by rear type bike carriers.

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