| 摘要 |
The present invention is a hoisting winch that uses two motors, one a low-speed, high-torque hoisting motor and the other a high-speed, low-torque compensation motor. The motor shafts are connected to a cable drum by an epicycloidal gear trains. Uni-directional free-wheel assemblies are operatively connected to the motor shafts between the motors and an associated gear train. A first free wheel assembly includes a first driving element which is connected to the hoisting motor shaft and which drives a first driven element only in the drum unwinding direction. A second free wheel assembly includes a second driving element which is connected to the compensation motor shaft and which drives a second driven element driven only in the drum winding direction. Selectively appliable and releasable brakes resist rotation of the driven elements. An electrohydraulic control system controls the motors and brakes to allow the hoisting winch to be used in loading and unloading cargo from a ship.
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