| 摘要 |
<p>The device (1) has a screwing head (20) rotatively connected to a driving unit (15) via bottom of an inclined or vertical fastener. The screwing head is displaced between a vertical position and an inclined position by an inclining unit (30). A pantograph system (10) includes an arm (11) fixed on a frame (2), and an arm (12) fixed to a free end of the arm (11). The two arms are articulated with each other to assist the displacement of the screwing head in a space. The inclining unit has a plate fixed on a free end of the arm (12), and a spindle hub integrated to the plate.</p> |
