作者: Shigeto Shibuta , Masahiko Sakurai
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摘要: An offshore platform provided with several supporting legs ascending and descending vertically installed in a specified place on the sea by lowering onto seabed after being towed to place. Each of has its side racks extending longitudinally. The are lifted lowered driving pinions that engage these racks. can be held immovably fixing meshing pinions, which is accomplished braking pinion drives, when have reached seabed. This also stoppers disengage from through lateral movement thereof toward away both stoppers. To ensure whole load applied appropriately shared both, control device detects two loads automatically drives so as set this ratio an appropriate value.