Method and device for preventing an element attached to a movable installation from being affected by the movements of this installation

摘要

A method and device for withdrawing an element fastened to a mobile installation (1) while compensating for the movements of this installation, comprises at least one actuating cylinder (21, 22), at least one accumulator (26) and several pulleys (12, 13, 14, 16), arranged so that the mechanical and oloepneumatic forces are substantially equal. The pulleys are mounted on levers (19, 23, 24, 25) and a cable passes from a winch (7) over the pulleys to a fixed anchorage (8). The cable extends over a block (4) which is immobile with respect to the sea bed 5 and a movable block located between the pulleys. IMAGE