| 摘要 |
A method and apparatus for the assembly of long objects (1) such as rollers, cylinders, elongated tools, for example surface cutters, on a rotating shaft (2) with the aid of two expander bushings (3, 4), each an integral part made up of an inner wall (7) and an outer wall (8), which between them form a pressure cavity (9), which is filled with a liquid or plastic pressure medium, and where the expander bushings (3, 4) each have a flange (10) arranged to contact each end surface (11) of the long object (1) which shall be assembled. An axial hole (12) is partially drilled in the expander bushing's flange (10) from the surface turned toward the expander bushing (7, 8), and the axial hole (12) is connected via a channel (13) to the pressure cavity (9) and a corresponding axial hole (15) is led through the long object (1), whereafter the expander bushings (3, 4) are axially fastened against the long object (1), so that the expander bushings (3, 4) and the long object (1) form a hydraulically sealed complete system, wherein pressure can be applied from either of the expander bushings, or from one or several nipples on the elongated object (1). |
