| 摘要 |
<p>The frame (10) has a support part (30) arranged at carrying elements (11) around an axis of rotation (31). A locking device (60) is provided for determining the support part in an angle position and transferred into a release position that allows turning of the support part by an actuator (90). A belt is provided as the actuator, and a guiding element is arranged at the carrying elements. The locking device comprises a locking element and a blocking element that co-operates with the locking element, where the locking element is disk-shaped.</p> |
