SHAFT-BUSH ASSEMBLY EQUIPPED WITH EXPANSION ELEMENT Russian patent published in 2012 - IPC F16B7/04 F16B21/18 F16D1/104 B65G39/02 

FIELD: machine building.

SUBSTANCE: shaft-bush assembly includes axial pin, expansion element and bush. Axial pin installed in the bush is fixed in radial direction relative to the bush; at that, axial pin includes the axis section preventing the rotation, and bush includes the bush section preventing the rotation. Expansion element is installed on axial pin and includes external periphery area and is made so that outer diameter of the external periphery area in non-stressed position of expansion element exceeds inner diameter of the corresponding area of internal bush periphery. When axial pin is installed in the bush, expansion element is elastically deformed so that external periphery area of expansion element from non-stressed position of expansion element is offset in axial direction of axial pin. Due to decrease in outer diameter of external periphery area of expansion element at axial offset of external periphery area of expansion element, the decreased outer diameter of expansion element corresponds to inner diameter of the appropriate area of internal bush periphery to which this element is adjoined with pre-stress.

EFFECT: reliable fitting of conveyor roller in conveyor and easy manufacture.

17 cl, 7 dwg