Patent ID: 8147007

Claim:
A spring mounted belt-band traveling gear ( 10 ), comprising: a bogie ( 12 ); at least two outer deflection rollers ( 14 , 16 ) respectively mounted for rotation in opposite ends of said bogie ( 12 ); an endless belt-band ( 22 ) engaging a periphery of said outer deflection rollers ( 14 , 16 ) about which said endless belt-band ( 22 ) is disposed; a plurality of carrier rollers ( 24 ) being mounted along a lower region of said bogie ( 12 ) in supporting engagement with a section of said endless belt-band ( 22 ) in ground contact between said at least two outer deflection rollers ( 14 , 16 ); a traveling gear rocker ( 34 ) having one end mounted to said bogie ( 12 ) for pivoting about a rotation axis, said bogie ( 12 ) being supported against a frame of a vehicle by a rotary bearing ( 36 ) and by a first fluidic suspension or damping unit defined by at least one hydraulic linear traveling gear supporting cylinder ( 40 ) coupled between the traveling gear rocker ( 34 ) and the bogie and having a pressure corresponding to an applied axle load (F A ) being built up against a working surface area of a piston in said at least one cylinder ( 40 ); each of said plurality of carrier rollers ( 24 ) being supported on the bogie ( 12 ) by a roller rocker ( 26 ) mounted to the bogie for pivoting about a rotation axis ( 28 ) and by a second fluidic suspension or damping unit defined by a second hydraulic linear roller supporting cylinder ( 30 ) connected between the bogie and the roller rocker; said belt-band traveling gear ( 10 ) further comprising a fluidic coupling system ( 50 ) fluidicly coupling said working surface area of said piston of said at least one hydraulic linear traveling gear supporting cylinder ( 40 ) with a working surface area of a piston of each said second hydraulic linear supporting cylinder ( 30 ); a hydropneumatic accumulator ( 48 ); said fluidic coupling system ( 50 ) being connected to said accumulator ( 48 ) and embodying a control arrangement operable for selectively connecting and disconnecting said accumulator to said working surface areas of the respective pistons of the supporting cylinders ( 30 , 40 ); and said piston of said at least one supporting cylinder ( 40 ) having a first working surface area so related to a second working surface area of a piston of each said second supporting cylinder ( 30 ) and taking into account the lever length (L RS ) of each roller rocker 26 and the lever length (L ST ) of each carrier roller supporting cylinder ( 30 ) that a contact force (F R ) of each of the supporting rollers ( 24 ) and each of the deflection rollers ( 14 , 16 ) corresponds to said axle load (F A ) divided by the total number (n) of supporting rollers ( 24 ) and deflection rollers ( 14 , 16 ).