The disk body is coupled with wheel through bolt, which is easy for installation.
盘体与车轮通过螺栓联结，更换安装方便；
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
The mill comprises roll changing hydrocylinder (1), with rolling mill group (3), roll changer (2), post (4), worm wheel lifting gear (5), U-shaped frame (7), rotation ear (8) and bolt (9).