An apparatus for increasing the power and range of mobile cranes, specifically those transported on trucks, which is characterized by comprising, independently of the constitution in the chassis, a front steering train and the rear and rear wheel drive, incorporation of a third train of freewheels only supporting, located later to the powertrain, being linked articulately to the base of the body constituting the body of counterweight and weighting of the crane. (Machine-translation by Google Translate, not legally binding)
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