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device for compensating variations in distance between a body hung on an object that floats on water and soil.
device for compensating variations in distance between a body hung on an object that floats on water and soil.
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机译:用于补偿悬在水和土壤上漂浮的物体上的物体之间的距离变化的装置。
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摘要
Apparatus for compensating for variations in the distance between an object or load suspended by a string of rods from a floating support or vessel and the sea floor therebelow so as to control the movement of the object or load with respect to the sea floor. There is both active and passive compensation provided by respective cylinder and piston assemblies associated with pressure accumulators. The passive compensation acts like spring. The active cylinder and piston assembly is of the double action type and disposed in parallel with the passive assembly. The active assembly compensates for residual vertical oscillations and operates as a function of two parameters : the position of the piston rod with respect to the cylinder of the active assembly and the velocity of the floating support with respect to the sea floor. Hydraulic control means operative in accordance with the parameters is connected to variable chambers of the active cylinder divided by its piston for varying the direction and flow rate of hydraulic fluid delivered thereto.
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