A mobile shaft winch, includes a carrier vehicle having a vehicle drive, with an internal combustion engine, a rigid main frame, and a rotary platform arranged on the main frame by a rotary connection. A drum winch is arranged on the rotary platform and has a cable drum driven by a winch drive. A hydraulic system arranged on the carrier vehicle includes a hydraulic pump driven by an electric motor a pressure side of the hydraulic pump is in fluid-conducting connection with a hydraulic motor of the winch drive. The internal combustion engine of the vehicle drive drives an electric generator through an auxiliary output drive. The electric motor is configured to be selectively operated on an electricity supply grid or the electric generator.

A mobile shaft winch, includes a carrier vehicle having a vehicle drive, with an internal combustion engine, a rigid main frame, and a rotary platform arranged on the main frame by a rotary connection. A drum winch is arranged on the rotary platform and has a cable drum driven by a winch drive. A hydraulic system arranged on the carrier vehicle includes a hydraulic pump driven by an electric motor a pressure side of the hydraulic pump is in fluid-conducting connection with a hydraulic motor of the winch drive. The internal combustion engine of the vehicle drive drives an electric generator through an auxiliary output drive. The electric motor is configured to be selectively operated on an electricity supply grid or the electric generator.

A position-determining actuator includes a rod, a barrel, a wave detector, and a controller. The barrel at least partially surrounds a piston of the rod so as to define a cap-side void and allow the rod to telescope relative to the barrel. The wave detector is associated with the cap-side void and configured to read fluid pressure of a hydraulic fluid disposed in the cap-side void. The controller is configured to receive, from the wave detector, a pressure reading from within the cap-side void; analyze the pressure reading to determine an extension standing wave; and analyze the extension standing wave to determine an extension dimension of the cap-side void.

A pipelayer machine having a counterweight assembly is provided. The pipelayer machine can include a main body having first and second sides, a first side track provided on the first side of the main body and a second side track provided on the second side of the main body. A side boom can be provided on the first side of the main body. The counterweight assembly can be provided on the second side of the main body and include a counterweight mounting frame. A counterweight can be provided having a first side with an engagement hook extending from the first side. The engagement hook can be used to attach the counterweight to the counterweight mounting frame.

A pipelayer machine having a counterweight assembly is provided. The pipelayer machine can include a main body having first and second sides, a first side track provided on the first side of the main body and a second side track provided on the second side of the main body. A side boom can be provided on the first side of the main body. The counterweight assembly can be provided on the second side of the main body and include a counterweight mounting frame. A counterweight can be provided having a first side with an engagement hook extending from the first side. The engagement hook can be used to attach the counterweight to the counterweight mounting frame.

A machine comprising a frame including a front-right portion, a front-left portion, a rear-right portion, and a rear-left portion. The machine includes a first jack coupled with the front-right portion for raising or lowering the front-right portion, a second jack coupled with the front-left portion for raising or lowering the front-left portion, a third jack coupled with the rear-right portion for raising or lowering the rear-right portion, and a fourth jack coupled with the rear-left portion for raising or lowering the rear-left portion. The machine includes a front jack leveling system operatively coupled with the first jack and the second jack. The front jack leveling system controls the first jack and the second jack such that a first movement of the first jack in a first direction corresponds to a second movement of the second jack in a second direction that is opposite from the first direction.

A machine comprising a frame including a front-right portion, a front-left portion, a rear-right portion, and a rear-left portion. The machine includes a first jack coupled with the front-right portion for raising or lowering the front-right portion, a second jack coupled with the front-left portion for raising or lowering the front-left portion, a third jack coupled with the rear-right portion for raising or lowering the rear-right portion, and a fourth jack coupled with the rear-left portion for raising or lowering the rear-left portion. The machine includes a front jack leveling system operatively coupled with the first jack and the second jack. The front jack leveling system controls the first jack and the second jack such that a first movement of the first jack in a first direction corresponds to a second movement of the second jack in a second direction that is opposite from the first direction.

A method for leveling a jacked vehicle may involve: (a) sensing a pitch angle of the vehicle; (b) sensing a roll angle of the vehicle; (c) producing a pitch reference value that is related to the sensed pitch angle of the vehicle; (d) producing a roll reference value that is related to the sensed roll angle of the vehicle; (e) extending a vehicle jack that affects at least the pitch angle of the vehicle at a speed that is related to the pitch reference value; (f) extending a vehicle jack that affects at least the roll angle of the vehicle at a speed that is related to the roll reference value; and (g) repeating (a)-(f) until the sum of the pitch and roll angles falls below a predetermined angle.

A method for leveling a jacked vehicle may involve: (a) sensing a pitch angle of the vehicle; (b) sensing a roll angle of the vehicle; (c) producing a pitch reference value that is related to the sensed pitch angle of the vehicle; (d) producing a roll reference value that is related to the sensed roll angle of the vehicle; (e) extending a vehicle jack that affects at least the pitch angle of the vehicle at a speed that is related to the pitch reference value; (f) extending a vehicle jack that affects at least the roll angle of the vehicle at a speed that is related to the roll reference value; and (g) repeating (a)-(f) until the sum of the pitch and roll angles falls below a predetermined angle.

Described is a system for stabilizing a self-propelled operating machine (1), comprising scissor-like stabilizers (10), designed to pass from operating configurations, in which they stabilize the machine (1), thereby raising the wheels (22) above the ground, to a rest configuration, in which the wheels (11) are returned to the ground, in turn comprising: one or more pairs of rotatable stabilizing telescopic arms (2), each arm (2) comprising a first segment (21) and a second segment (22) extendable and retractable relative to the first segment (21) and equipped with a foot (20) for contact with the ground; first movement means (3) designed to rotate the arms (2) between a completely raised position and lowered working positions; second movement means designed to move the second segments (22) between a completely closed position and extended positions; and a processing unit configured to control the first and second movement means in such a way that the stabilizers (10) perform the following retraction sequence: rotating the arms (2) upwards to a first partially raised position; retracting the second segments (22) to a completely closed position; rotating the arms (2) upwards to the completely raised position, so that the stabilizers (10) are in the rest position.