Device is offset to drill thrust

The utility model provides a device is offset to drill thrust, connecting plate fix on the base, sharp slip can be done to the rack on the connecting plate, and inside has the through -hole, the one end diameter of pull rod is greater than the internal diameter of spring, and the other end passes the through -hole that the spring passed the rack again, through the flexible end fixed connection ofcoupling nut with the cylinder, but swiveling wheel and base swivelling joint, the inside center of swiveling wheel have the internal thread, and outside upper end has the wheel and rack meshing of gear, swiveling wheel, the jacking stand have an external screw thread, the internal thread of swiveling wheel and the meshing of the external screw thread of jacking stand, the deflector is fixed on the connecting plate to overlap on the jacking stand deflector and jacking stand spline joint. Its advantage lies in adopting floating jacking, and when there was great tolerance the work piece bottom surface, the work piece bo