| 摘要 |
<p>A top coupling part (1) contains a recess in which a projecting coupling extension (20) of a bottom coupling part (2) engages. The two coupling parts (1, 2) can be separated from one another by a pure axial movement and are held together by a cap nut (3). The top coupling part (1) is connected to a rotating drive unit (13) by a threaded stem (4), and the bottom coupling part (2) is connected by a threaded stem (15) to a tubular cutter (14) of large diameter for working concrete. …<??>The two coupling parts can easily be separated by this coupling device even after the transmission of high torque, since the cap nut (3) is not involved in the torque transmission and therefore no jamming occurs. …<IMAGE>… </p> |
