| 摘要 |
<p>The goal has a beam (100) including an end equipped with a panel (200) associated with a ring (210), and another end articulated by a joint (A) with an upper part of a mast (300), where a lower part of the mast is articulated by another joint (B) relative to a base (500). A jack (600) ensures bending motion of the latter joint that adopts an axis of rotation located between two ends of the mast, where the jack ensures support of rotary movement of the mast such that a part of the mast is situated between the axis of rotation and its lower end.</p> |
