| 摘要 |
<p>The object of the present invention is a scissor-type vibrator for shaking trees wherein one of the arms (1) thereof extends backwards to achieve a better working lever so that, on gripping the tree, the hydraulic piston (7) that connects the two scissor arms (12) expands, thus increasing the tightening torque whilst reducing the hydraulic pressure, and furthermore, to bring about the vibration, the scissor-type vibrator has a cam (9) to which a synchronised single or double rotation may be applied and the vibration time may be regulated.</p> |
