| 摘要 |
<p>The spanner has a return lock (9) that locks rotation of a drum (3) in a withdrawal direction of a traction unit (14). A release element (10) releases the return lock. A crank handle (7) is deactivated by a loosening of a mechanical linkage i.e. gear box terminal (5), between the crank handle and the drum. A switching element (11) prevents actuation of the release element when the crank handle is activated. The switching element is reversible between a freewheel position in which the return lock is resolved, and a locking position in which the return lock is activated.</p> |
