A track assembly for providing traction to an off-road vehicle, such as an agricultural vehicle, a construction vehicle, or another work vehicle, in which the track assembly may comprise a suspension between a frame of the track assembly and a bogie carrying roller wheels of the track assembly.

A track assembly for providing traction to an off-road vehicle, such as an agricultural vehicle, a construction vehicle, or another work vehicle, in which the track assembly may comprise a suspension between a frame of the track assembly and a bogie carrying roller wheels of the track assembly.

A method for mounting a track assembly to a vehicle comprises: pivotally connecting a frame of the track assembly to a distal end portion of an A-arm of the vehicle for permitting rotation of the track assembly about a steering axis; inserting a fastener through a fastener aperture defined in the distal end portion of the A-arm; and fastening an anti-rotation device of the track assembly to the distal end portion of the A-arm with the fastener, the anti-rotation device being connected to the frame. A suspension and track assembly for a vehicle is also disclosed.

The present invention relates to a suspension system (S; S1; S2) fora tracked vehicle (V; V1; V2). Said tracked vehicle comprises a vehicle body (4), a pair of opposite track assemblies (T1, T2), the respective track assembly comprising a plurality of road wheels (2) and an endless track (3) disposed around said wheels. Said suspension system comprises a road wheel arm (20) having a wheel axle portion (22) configured to support a road wheel of the vehicle and a pivot axle portion (24), the road wheel arm (20) being pivotably journalled at said pivot axle portion (24) to a support portion (30) configured to be fixed to the vehicle body (4). The suspension system comprises a torsion bar (40) having a first end portion (42) and an opposite second end portion (44), the first end portion (42) being connected to the support portion (30). The suspension system comprises an adjustment device (100) connected to the second end portion (44) of the torsion bar (40), the adjustment device being configured to adjust the torque on the torsion bar so as to adjust the height of the vehicle body relative to said pair of track assemblies. The invention also relates to a tracked vehicle with such a suspension system and a method for controlling such a suspension system.

A snowmobile extends along a longitudinal axis and includes a frame, a powertrain coupled to the frame and a track operatively coupled to the powertrain, the track having an upper run and a lower run. The snowmobile includes a rear suspension having at least one slide rail having a hyfax defining a plane, at least one front idler wheel in contact with the lower run of the track, at least one center idler wheel positioned adjacent the at least one front idler wheel, and at least one rear idler wheel positioned adjacent the at least one center idler wheel, and wherein the positioning of the at least center idler wheel is configured such that the at least one rear idler wheel is positioned at an angle relative to the plane having a value that is greater than zero.

A snowmobile extends along a longitudinal axis and includes a frame, a powertrain coupled to the frame and a track operatively coupled to the powertrain, the track having an upper run and a lower run. The snowmobile includes a rear suspension having at least one slide rail having a hyfax defining a plane, at least one front idler wheel in contact with the lower run of the track, at least one center idler wheel positioned adjacent the at least one front idler wheel, and at least one rear idler wheel positioned adjacent the at least one center idler wheel, and wherein the positioning of the at least center idler wheel is configured such that the at least one rear idler wheel is positioned at an angle relative to the plane having a value that is greater than zero.

Vehicle comprising a hull and motorised aquatic propulsion members and motorised land propulsion members, this vehicle being able to move between a navigation position and a land transport position in which it rests on sets of caterpillar tracks. Each set of caterpillar tracks (1) is equipped with an even number of rollers (7) so as to define a set of adjacent roller pairs (71, 72). The rollers (71, 72) of each pair are connected to the chassis (2) by suspension means comprising a set (12) of at least two superposed curved elastic leaves made of a fibre-reinforced thermosetting resin, namely an upper leaf (131) and a lower leaf (132), the set being fixed on the one hand to the axles (9) of the rollers (71, 72) at its respective ends and, on the other hand, to the chassis (2) in its central part, and the upper leaf (13i) and the lower leaf (132) of each of the sets of leaves (12) are joined together and covered with a layer of elastomer (14).

Vehicle comprising a hull and motorised aquatic propulsion members and motorised land propulsion members, this vehicle being able to move between a navigation position and a land transport position in which it rests on sets of caterpillar tracks. Each set of caterpillar tracks (1) is equipped with an even number of rollers (7) so as to define a set of adjacent roller pairs (71, 72). The rollers (71, 72) of each pair are connected to the chassis (2) by suspension means comprising a set (12) of at least two superposed curved elastic leaves made of a fibre-reinforced thermosetting resin, namely an upper leaf (131) and a lower leaf (132), the set being fixed on the one hand to the axles (9) of the rollers (71, 72) at its respective ends and, on the other hand, to the chassis (2) in its central part, and the upper leaf (13i) and the lower leaf (132) of each of the sets of leaves (12) are joined together and covered with a layer of elastomer (14).

A suspension for a tracked utility vehicle is provided. The trailing link suspension for the tracked utility vehicle has at least two trailing links. Each of said trailing links has a shock and a walking beam. The first end of the trailing link is pivotably connected to the tracked utility vehicle chassis. The second end of said trailing link is pivotably connected to the walking beam. The first end of the shock is pivotably connected to the chassis and the second end is pivotably connected to the trailing link. The walking beam has a plurality of axle mounted bogey wheels for engaging one or both of the track of said tracked utility vehicle or the track lug or guide. The shocks are independently adjustable to permit more of the tracked utility vehicle's weight to be supported at the suspension midpoint.

A suspension for a tracked utility vehicle is provided. The trailing link suspension for the tracked utility vehicle has at least two trailing links. Each of said trailing links has a shock and a walking beam. The first end of the trailing link is pivotably connected to the tracked utility vehicle chassis. The second end of said trailing link is pivotably connected to the walking beam. The first end of the shock is pivotably connected to the chassis and the second end is pivotably connected to the trailing link. The walking beam has a plurality of axle mounted bogey wheels for engaging one or both of the track of said tracked utility vehicle or the track lug or guide. The shocks are independently adjustable to permit more of the tracked utility vehicle's weight to be supported at the suspension midpoint.