Tipping hook for skip type container loaders, with a load detector linked to a control unit for controlling the extension of the telescopic arms.

摘要

A skip type container 26 tipping apparatus 10 is disclosed comprising a load bed 12 having a first telescopic arm 18, the arm being pivotally connected to the load bed toward the rear 16 of the load bed, and a second telescopic arm 20. The second arm being pivotally connected at a first end to the load bed toward the front 14 of the load bed and at a second end to the first telescopic arm. Engagement means ie a tipping hook 22 to engage the skip, is disposed toward the rear of the load bed. The apparatus has a load detector to detect the load on the hook and control means for controlling the extension of the telescopic arms. The control means being adapted to control the first and second telescopic arms in response to the load detector. The load sensor may be a spring and the control means may incorporate a diverter valve. The arms may be hydraulic. The method of operation includes the steps of detecting a load exceeding a predetermined value, the control means decreasing the length of the first arm, while maintaining the length of the second arm until the load drops below another predetermined value and then allowing further operation of the second arm.