Personal pivot device in axle center

Personal pivot device in axle center is including first bolster, the primary shaft, secondary shaft, first connecting rod and second connecting rod. First bolster has first perforation and the second is perforated, and first fenestrate inner wall is equipped with first rack. The primary shaft passes first perforation, and the primary shaft has first gear, the first rack of a gear engagement. The secondary shaft passes the second and perforates. The one end pin joint primary shaft of first connecting rod. The one end pin joint secondary shaft of second connecting rod, the other end of the first connecting rod of other end pin joint of second connecting rod. By the rack of the gear engagement bolster perforation inner wall of axle, while the gear rotates on the rack removes for the axle removes while rotating equally, and drive the diaxon by the connecting rod again and with moving and provide the spacing of axle, realize that the axle center is movable, and its simple structure, reach more frivolousization des