| 摘要 |
The invention relates to a joint comprising two tool sections (3, 5), each having a respective flat surface (47, 49). One of said sections contains a cavity (9) and the other section a lug (7) that can be at least partially inserted into the cavity (9). The joint also comprises a tensioning unit (19) for generating a tensioning force, which can be used to press the flat surfaces (47, 49) of the tool sections (3, 5) against one another in a pre-stressed condition, said tensioning unit (19) comprising an actuating device (21) and at least two tensioning bodies (43), which are housed in the interior of the lug (7) so that they can be displaced in the axial and radial directions of the joint (1) and which when pre-stressed act on an inner tensioning shoulder (15) of the lug (7). In the interior of the lug (7), the tensioning unit (19) comprises a piston (23), which can be displaced in the longitudinal direction of the joint (1) and which can be coupled to the actuating device (21) by means of a coupling unit (27, 29, 31) in such a way that in a first functional position of the actuating device (21), said piston adopts a tensioning position and in a second functional position of the actuating device (21) adopts a release position. The joint is characterised in that the actuating device (21) comprises at least one rotatable actuating element (25), whose rotational axis can be rotated about an angle of preferably 90° to the longitudinal axis (17) of said joint (1) and has an eccentric outer surface, which co-operates with the coupling unit in such a way that a rotation of the actuating element (25) causes an axial displacement of the piston (23). |
