Tracked undercarriage for operating machines

A tracked undercarriage for operating machines comprising:

• a main frame defining a first longitudinal direction;
• a track unit mounted on each of two opposite sides of said main frame and arranged parallel to said first longitudinal direction, each track unit comprising a structure and at least one track mounted on said structure;
• and
• a sliding frame mounted on each of said two opposite sides of said main frame,
• wherein said sliding frame comprises:
• a longitudinal member arranged parallel to said first longitudinal direction and interposed between said main frame and the corresponding track unit;
• first constraining means, for slidingly constraining said longitudinal member to said main frame, said first constraining means being configured to enable said longitudinal member to translate with respect to said main frame in a second translation direction, orthogonal to said longitudinal direction;
• second constraining means, for rotatably securing the structure of the corresponding track unit to a corresponding longitudinal member, said second constraining means being configured to enable said track unit to rotate with respect to said longitudinal member around an axis of rotation, orthogonal to said longitudinal direction;
• translation means, configured to cause a sliding of said longitudinal member with respect to said main frame in said second translation direction;
• and
• rotation means, configured to cause a rotation of said track unit with respect to said longitudinal member around said rotation axis,
• wherein said first constraining means of each sliding frame comprise at least one beam placed parallel to said second translation direction and slidably housed in a guide or seat made in said main frame, and
• wherein said at least one beam of the sliding frame on one side slides inside a cavity made in the at least one beam of the sliding frame of an opposite side, such that the two sliding frames mounted on said two opposite sides together make up a telescopic structure, and can slide relative to each other between a contracted position and an extended position.