A ground-engaging track system includes a track roller frame, an idler, and anti-backbending rollers supported by the track roller frame at locations between track rollers and the idler. The anti-backbending rollers define an idler space receiving the idler partially therein and positioned to oppose backbending of a deflection-sensitive section of a ground-engaging track.

A ground-engaging track system includes a track roller frame, an idler, and anti-backbending rollers supported by the track roller frame at locations between track rollers and the idler. The anti-backbending rollers define an idler space receiving the idler partially therein and positioned to oppose backbending of a deflection-sensitive section of a ground-engaging track.

A track system for a vehicle having at least three axles is disclosed. The track system includes a frame to which sprocket, idler and support wheel assemblies are connectable, an endless track and a pivoting assembly. The pivoting assembly has a casing connectable to a second axle and at least one pivotable member that has first and second portions respectively pivotally connected to the casing and to the frame. The at least one pivotable member is pivotable between first and second positions about a longitudinally extending pivot, in response to which the first portion is displaced laterally relative to the second portion, and pivotable between third and fourth positions about a lateral pivot axis in response to which the first portion is displaced longitudinally relative to the second portion. A pivoting assembly, a pivoting assembly including a resilient assembly, and a vehicle having the track system are also disclosed.

A ground-engaging track system includes a track roller frame, an idler, and anti-backbending rollers supported by the track roller frame at locations between track rollers and the idler. The anti-backbending rollers define an idler space receiving the idler partially therein and positioned to oppose backbending of a deflection-sensitive section of a ground-engaging track.

A ground-engaging track system includes a track roller frame, an idler, and anti-backbending rollers supported by the track roller frame at locations between track rollers and the idler. The anti-backbending rollers define an idler space receiving the idler partially therein and positioned to oppose backbending of a deflection-sensitive section of a ground-engaging track.

A track assembly for a vehicle is provided. The vehicle has a suspension arm for connecting the track assembly to the vehicle. The track assembly includes a frame, a plurality of track-contacting wheels, and an endless track disposed around the track-contacting wheels. The track-contacting wheels include: a drive wheel rotationally connected to the frame and at least one idler wheel rotationally connected to the frame. The drive wheel defines a drive wheel axis about which the drive wheel is rotatable. The drive wheel is adapted for driving the endless track. The track assembly also includes a rotation limiting device for limiting rotation of the track assembly relative to the suspension arm of the vehicle. The rotation limiting device is connected to the frame of the track assembly and is configured to be connected to the suspension arm of the vehicle.

A track assembly for a vehicle is provided. The vehicle has a suspension arm for connecting the track assembly to the vehicle. The track assembly includes a frame, a plurality of track-contacting wheels, and an endless track disposed around the track-contacting wheels. The track-contacting wheels include: a drive wheel rotationally connected to the frame and at least one idler wheel rotationally connected to the frame. The drive wheel defines a drive wheel axis about which the drive wheel is rotatable. The drive wheel is adapted for driving the endless track. The track assembly also includes a rotation limiting device for limiting rotation of the track assembly relative to the suspension arm of the vehicle. The rotation limiting device is connected to the frame of the track assembly and is configured to be connected to the suspension arm of the vehicle.

To provide an idler of a crawler-type traveling device which secures the strength while suppressing an increase in the weight and cost, and a crawler-type traveling device provided with the same. An idler includes a hub section that is axially supported; a rim section that is disposed coaxially with the hub section; and plates that connect the hub section and the rim section. At least one of the hub section and the rim section has flange sections that rise toward the other. The plates are mounted to the flange sections.

To provide an idler of a crawler-type traveling device which secures the strength while suppressing an increase in the weight and cost, and a crawler-type traveling device provided with the same. An idler includes a hub section that is axially supported; a rim section that is disposed coaxially with the hub section; and plates that connect the hub section and the rim section. At least one of the hub section and the rim section has flange sections that rise toward the other. The plates are mounted to the flange sections.

An endless track assembly that mounts to a vehicle drive linkage and is operative to vary the track geometry or profile and terrain contact surface to differing terrains. The track assembly includes controlled idler wheel rocker arm suspensions for pivoting associated idler wheels at an assembly framework. In one assembly, a wheel and tire are supported to a track drive sprocket. The shape of the track assembly can be transformed to alternately engage and disengage the track or wheel with the terrain. In other constructions, the geometry of the track can be varied between triangular and circular shapes. The assemblies include pivotally controlled idler wheel suspensions that cooperate with a drive sprocket supported expansible member to transform the track profile.