Abstract: A winch system comprising a cable drum coupled with a reversible hydromotor and a reversible hydropump arranged with the hydromotor in a closed circuit by means of two communication conduits, in which a safety circuit connecting the communication conduits with one another at the occurrence of pressure shocks therein is arranged and provided with one controllable relief pressure valve, whose inlet and outlet are connected with each one of the communication conduits through non-return valves allowing supply to and, respectively, drainage from the relief pressure valve.

Abstract: The invention relates to a displaceable winch device having an external frame, a winch and a control cabin mounted inside said frame, transmission means coupled with said winch for driving the cable drum from a driving engine, for example, a Diesel engine, said frame having the dimensions and characteristics of a standardized transport container, in which the winch, the control-cabin and the driving engine are accommodated.