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公开(公告)号：US20220098967A1
公开(公告)日：2022-03-31
申请号：US17429252
申请日：2020-01-21
申请人： SOILMEC S.P.A.
摘要： An excavating machine includes an actuation unit for moving the excavator, a main winch and secondary winch for lifting and lowering the actuation unit. A closed hydraulic circuit or an electric circuit drives the main winch. An open hydraulic circuit drives the secondary winch. A first pressure or current sensor measures fluid pressure or, electric current intensity in the hydraulic or electric driving circuit. A second pressure sensor measures fluid pressure in the open hydraulic circuit. A pressure regulator regulates fluid pressure in the open hydraulic circuit. A control unit executes a combined operating condition with the winches applying a force simultaneously and based on values sensed, controls the pressure regulator so the fluid pressure in the open hydraulic circuit, during the combined operating condition, has a target value that is a function of: the fluid pressure in the closed hydraulic circuit or the current in the electric circuit.
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公开(公告)号：US20180066483A1
公开(公告)日：2018-03-08
申请号：US15696362
申请日：2017-09-06
申请人： SOILMEC S.p.A.
发明人： Alessio ZANICHELLI
摘要： A drilling machine having: a string of telescopic rods provided with an excavation tool; a winch having a drum associated with a motor; a flexible pulling element connected on the one hand to the drum and on the other hand to the string of telescopic rods; a manual control element of the winch that can assume a first position, a second position and a third position; a control system configured for controlling the motor, in a first operating mode, so as to unwind the flexible pulling element from the drum when the manual control element is in the first position, wind the flexible pulling element on the drum in order to raise the string of telescopic rods when the manual control element is in the second position, stop the drum when the manual control element is in the third position; wherein it comprises a first manual selector adapted to select a second operating mode, and in that the control system is configured for controlling the motor, in the second operating mode, so as to wind the flexible pulling element on the drum in order to tension the flexible pulling element without raising the string of telescopic rods when the manual control element assumes the third position.
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