| 摘要 |
A sling for carrying a load includes a frame with a gripper mounted thereon and a cable extends across the gripper and is held thereby against movement when the load is lifted. The ends of the cable are doubled back toward the frame and connected with each other by a chain to form two elongated loop portions which are disposed on opposite sides of the frame and function as the two legs of the sling. The chain is trained across a drive sprocket which is mounted on the frame vertically of the gripper and is driven by a motor to draw the chain across the frame from one side to the other and thereby selectively shorten one loop portion while lengthening the other loop portion to adjust the load to a precise attitude after the load has been lifted.
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