| 摘要 |
<p>The device has a hammering unit (14) with a pin (38) for cooperating with a driving bar (46), where the bar has a hollow end fitting (44) with a conjugated profile. The hammering unit has an anti-rotation unit (40) for the pin with respect to the driving bar in order to control the orientation of the anchoring device during a penetration phase in a ground. An aerofoil has two symmetric wings arranged on both sides of a body, where each wing has a profile with variable thickness.</p> |
