| 摘要 |
The movement of one hook (12) is to an effective position in which it engages a shaft (13) which it also partly encompasses. To enable rapid and simple coupling of the fixture with the tool and elastic pressure application on the first (9) and second (12) hooks against the resp. shafts (11,13) with an adjustable force, the fixture has a knee joint linkage (14,15) which transfers the second hook from the ineffective to the effective position. The linkage (14,15) comprises two articulately connected links, of which the one (14) is pivotably located in the fixture, whilst the other (15) is pivotably connected to the second hook (12) and to components of the knee joint (40) to press the second hook against the second shaft (13) with adjustable pressure. |
