Patent ID: 8118374
Filing Date: 2012-02-21
Classification: B62D

Abstract:
1. A track unit for moving a ground work vehicle, comprising: a track, a driving wheel which is adapted to transmit motion to said track, a front pair of coaxial guiding wheels arranged at a front end of the track unit and a rear pair of coaxial guiding wheels arranged at a rear end of the track unit, intermediate resting rollers arranged between said front and rear pairs of coaxial guiding wheels, a monolithic upper portion structure that supports the driving wheel, said monolithic upper portion structure comprising two profiles which are monolithically connected and which support said driving wheel and which extend respectively forwardly and rearwardly from said driving wheel, a monolithic lower portion structure comprising a longitudinal member that supports the two pairs of coaxial guiding wheels and the intermediate resting rollers, two linkages arranged respectively proximate to said front and rear ends and pivoted by means of pivots respectively on said two profiles and on said longitudinal member, two elastic elements located respectively proximate to said front and rear ends and interposed between said two profiles and said longitudinal member, and at least one of said linkages being articulated in an intermediate position by means of an intermediate pivot arranged between the pivots for pivoting said at least one linkage to the two profiles and longitudinal member respectively.