| 摘要 |
{PG,1 A winching arrangement for lifting barges and the like from a water area in which a waterborne vessel is located. The present winching arrangement comprises at least two pairs of winches, each pair of which winches utilizes a common line to operate a block and tackle arrangement, with one of the winching mechanisms of each pair of winches being driven by a relatively high-speed motor and the other winch of the winching mechanism being driven at a relatively slow speed by a high-torque motor of greater horsepower. With the winches being connected to opposite ends of the common line of the block and tackle arrangement, with at least one pair of winches lifting one end of a barge or the like and another pair of winches lifting the other end of the barge or the like. The winches and the controls therefor, are so constructed that, as the waves or swells rise and cause the barge to rise faster than the ship or vessel on which the winching arrangement is located, the high-speed winches will take up the slack in the line as the barges are being lifted by the waves or swells and the slow-speed, high-torque motors will lift the barge onto the vessel as the waves or swells recede. The high-speed winching mechanism is held against retrogression by a one-way, releasable brake or the like, and the high-torque, slow-speed motor will continue to wind the winch line onto a winch drum until the barge or the like is at sufficient elevation that it may be {pg,2 moved into place or placed in storage, whereupon, the barge or the like is lowered into position on the vessel and this is repeated until the waterborne vessel is loaded. Reverse provisions are made for lowering the barges from the winch mechanisms into the water. Controls are provided for sensing the tension of the cable which controls the particular winch being operated.
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