| 摘要 |
A device for locating in a horizontal plane a load suspended from a carrying frame (1) which is adapted to be rotated about a vertical axis when suspending from a hoisting cable, said device comprising a flywheel mounted for rotation about a vertical axis in said frame, a reversable hydraulic machine (4) also mounted in said frame and adapted either to idle or to operate as motor to drive the flywheel or as pump to stop the flywheel by braking and a hydraulic circuit provided with a high-pressure vessel (11), a low-pressure reservoir (13) and control means adapted either to hydraulically bridge the machine permitting it to idle or to connect one end of the machine to the high-pressure vessel and the other end thereof to the low-pressure reservoir and vice versa.
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