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1·Using the hexagonal head bolt to fasten the axle clamp shrunk to narrow seam to hold the axle center firmly.

利用内六角螺栓拧紧的力量来使轴夹收缩进而使狭缝收缩，将轴心紧紧夹持住。

2·The utility model discloses a force driven fixing structure for axle center which comprises gear or synchronous belt wheel, axle clamp and inner hexagonal head bolt.

一种力传动的轴心固定结构，包括齿轮或同步带轮、轴夹及内六角螺栓。

3·If neither part is threaded a bolt must be used: this consists of a screw with a hexagonal head.

如果两者皆不的部份被穿线于门闩一定被用：这用一个六角形的头有螺丝钉。

4·A hexagonal molded rubber head forms around the rounded head of the metal bolt insert.

螺栓头部采用六边形形状，内部附有金属。