Patent ID: 6390723
Filing Date: 2002-05-21
Classification: B21B,F16D,Y10T

Abstract:
A changing device for quickly changing a hub mounted on an end of a shaft comprising(a) a threaded bolt screwed into the shaft end; (b) a threaded bushing having a step with an inside thread rotatably connected with the bolt, for effecting axial displacement of the threaded bushing relative to the shaft end; (c) a clamping bushing for radially clamping the hub, said clamping bushing disposed between the end of the shaft and the hub and having an inside step and a cylindrical receiving surface for a bearing sleeve for mounting a bearing of a bearing stand, said cylindrical receiving surface having an outside diameter smaller than an inside diameter of the hub; (d) a double-sided axial bearing axially fixed on said threaded bushing and transmitting a biaxial displacement of said threaded bushing to said clamping bushing; and (e) a retaining ring for pressing the double-sided axial bearing against the inside step of the clamping bushing and causing the axial displacement effected by rotation of the threaded bushing to be transmitted to the clamping bushing.