Patent ID: 8657335

Claim:
A stabilizer device for an operating machine, with the latter equipped with a frame having a first and a second pair of said stabilizer devices mounted to the front and rear ends thereof respectively, in each stabilizer device pair the stabilizer devices being set symmetrical and crosswise to said frame, so that corresponding resting feet are turned outwardly, in opposite directions with respect to the longitudinal midline of the frame, said stabilizer device pairs being designed, when in operation position, to define a supporting base having length equal to the longitudinal distance between the same stabilizer device pairs, and having width equal to the transverse distance between the resting feet of each of the same stabilizer device pairs, each of said stabilizer devices comprising at least a first and a second module, interconnected with each other, one of which is provided with linear elongation means, whereas the other is provided with compass elongation means, the above mentioned linear and compass elongation means being adapted to be operated in phase relation to define a retracted inactive position, in which the corresponding resting foot is lifted from the ground and the bulk of said stabilizer device is within the above mentioned machine maximum size limits, and an extended operation position, in which said resting foot contacts the ground, at a predetermined distance from the longitudinal midline, characterized in that: the first module is equipped with said linear elongation means and includes a tubular element, designed to hold and guide a sliding stem, operated by a relevant first actuator between an inner position and an outer one; said tubular element is carried in oscillating fashion by a vertical plate crosswise to the machine frame, and is subjected to the action of a power means designed to define, for the same tubular element, a horizontal inactive position and an inclined operative one; said second module is associated to said sliding stem, it is equipped with said compass elongation means and includes an oscillating arm, articulated to an outer end of said sliding stem and operated by a relevant second actuator, between a raised position and a lowered one; said resting foot is freely articulated to an end of said oscillating arm; the above mentioned retracted inactive position of said stabilizer device is defined when said tubular element is in said inactive horizontal position, with said sliding stem in said inner position and said oscillating arm in said raised position; the above mentioned extended operation position of said stabilizer device is defined when said tubular element is in said inclined operation position, with said sliding stem in said outer position and said oscillating arm in said lowered position.