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.

The stabilizing system for a self-propelled working machine (1) such as a telescopic handler or the like, comprising a plurality of stabilizer arms (2) able to be placed on the ground so as to enable stabilization of the machine (1). The system (1) further comprises: one or more measuring devices (6) able to detect a pressure to which the arms (2) are subjected and to produce pressure signals according to the detected pressure; and at least one processing unit connected to the measuring devices (6) and comprising a position module configured to determine, based on the pressure signals, whether the arms (2) are placed on the ground.

The stabilizing system for a self-propelled working machine (1) such as a telescopic handler or the like, comprising a plurality of stabilizer arms (2) able to be placed on the ground so as to enable stabilization of the machine (1). The system (1) further comprises: one or more measuring devices (6) able to detect a pressure to which the arms (2) are subjected and to produce pressure signals according to the detected pressure; and at least one processing unit connected to the measuring devices (6) and comprising a position module configured to determine, based on the pressure signals, whether the arms (2) are placed on the ground.

A mobile tower system including a tower skid assembly sized to be accommodated on a truck. The tower skid assembly including a skid including one or more ballast compartments, a tower framework fixed to a deck, a tower pivotably coupled to the tower framework, and a hydraulic actuator connected to a top member of the tower to extend the top member a vertical distance relative to a base member of the tower.

A mobile tower system including a tower skid assembly sized to be accommodated on a truck. The tower skid assembly including a skid including one or more ballast compartments, a tower framework fixed to a deck, a tower pivotably coupled to the tower framework, and a hydraulic actuator connected to a top member of the tower to extend the top member a vertical distance relative to a base member of the tower.

A crawler crane includes: a seating switch that detects whether an operator is in a driver seat; a turn angle potentiometer that detects the turn position of a boom; and a controller. The controller is provided with a boom turn restriction control unit for performing a boom turn-restricting control whereby the boom is not allowed to turn within a predetermined angular range above the driver seat on the basis of the output from the turn angle potentiometer. The boom turn restriction control unit includes a restriction-canceling unit that cancels the boom turn-restricting control performed by a turn-restricting unit if a preset restriction-canceling condition is met. The boom turn restriction control unit cancels the boom turn-restricting control if the seating switch does not detect an operator. Ease of operation and work can thus be improved in a remote operation mode and the like.

A crawler crane includes: a seating switch that detects whether an operator is in a driver seat; a turn angle potentiometer that detects the turn position of a boom; and a controller. The controller is provided with a boom turn restriction control unit for performing a boom turn-restricting control whereby the boom is not allowed to turn within a predetermined angular range above the driver seat on the basis of the output from the turn angle potentiometer. The boom turn restriction control unit includes a restriction-canceling unit that cancels the boom turn-restricting control performed by a turn-restricting unit if a preset restriction-canceling condition is met. The boom turn restriction control unit cancels the boom turn-restricting control if the seating switch does not detect an operator. Ease of operation and work can thus be improved in a remote operation mode and the like.

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.

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.

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.