A ratchetmechanism transfers the thread from spool to bobbin.
一种棘齿装置把线从线轴转到梭心上。
2
The inner and outer rings are preferably connected by means of a ratchetmechanism allowing for one way advancement there-between.
该内环和外环优选地通过允 许在它们之间的单向推进的棘齿机构来连接。
3
This paper mainly carries on the design of hydraulic wrench structure, including the design of the hydraulic cylinder, a ratchetmechanism design and strength check.