The existing problems of tensile control system of tubular strander and locking device of frame of spool are pointed out.
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。
2
Collapsible portable aluminum frame, solid front, solid rear wheel plastic wheel box, up on the rails, after the hand with self-locking brakes, seat belts.
可折叠便携式铝合金车架，实心前轮，塑料轮框实心后轮，上翻扶手，自锁式后把手连刹车，安全带。
3
The locking screw (17) and an end (18) are pressed on the arm plate (2) of the support frame by a cap (19).