Patent ID: 9227797
Filing Date: 2016-01-05
CPC Classification: B25J,B65G,B66F

Claim Text:
1. A crane, which comprises: a first arm, a second arm, a first vertical transmission mechanism and a second transmission mechanism; the first vertical transmission mechanism moving the first arm and the second arm to move vertically in a synchronous manner, and the second vertical transmission mechanism moving the second arm vertically with respect to the first arm; wherein the crane further comprising a horizontal transmission mechanism, the horizontal transmission mechanism moving the first arm, the second arm, the first vertical transmission mechanism and the second transmission mechanism horizontally; the crane further comprising a rotation mechanism, the rotation mechanism rotating the first arm, the second arm, the first vertical transmission mechanism and the second transmission mechanism around a vertical axis; the rotation mechanism comprises a driver, a coupling and a damper the driver is linked to damper through the coupling, and the damper uses a required speed to transmit the first arm, the second arm, the first vertical transmission mechanism and the second transmission mechanism around a vertical axis by lowering the rotation speed outputted by the driver and increasing torque; wherein the vertical axis and a center axis of the rotation mechanism are co-linear.