Patent ID: 8495948

Claim:
A power distribution transmission unit ( 1 ) with a hydrostatic power branch ( 2 ) and a mechanical power branch ( 3 ) connected by a connection system ( 8 ) such that the connection system ( 8 ) at least partially damps transfer of oscillations between the hydrostatic power branch ( 2 ) and the mechanical power branch ( 3 ), and a power flow, between the hydrostatic power branch ( 2 ) and the mechanical power branch ( 3 ), being passable via a connecting shaft ( 22 ) which compensates for axial offset between a hydrostat shaft ( 17 , 18 ) of the hydrostatic power branch ( 2 ) and a mechanical branch shaft ( 19 , 20 ) of the mechanical power branch ( 3 ), the connecting shaft ( 22 ) engaging, via a first tooth profile ( 23 ), with a tooth profile ( 24 ) of the hydrostat shaft ( 18 ) and being actively connected, via a second tooth profile ( 25 ), with a tooth profile ( 26 ) of the mechanical branch shaft ( 20 ) of the mechanical power branch ( 3 ), wherein the connecting shaft ( 21 , 22 ) is a hollow shaft and a spring device ( 27 ), which elastically pre-stresses the hydrostat shaft ( 17 , 18 ), is arranged at least partially within the connecting shaft ( 21 , 22 ), the tooth profiles ( 23 , 25 ) of the connecting shaft ( 22 ) are formed as curved outer teeth which respectively engage with the tooth profiles ( 24 and 26 ) of the hydrostat shaft ( 18 ) of the hydrostatic power branch ( 2 ) and the mechanical branch shaft ( 20 ) of the mechanical power branch ( 3 ), which are made as inner tooth profiles, and a seal device ( 37 ) is arranged between the hydrostat shaft ( 18 ) and the mechanical branch shaft ( 20 ) of the mechanical power branch ( 3 ).