A segmented track made of a plurality of elastomeric track segments is provided. Each track segment is made of reinforced elastomeric material and is provided, at each end thereof, with a joint element adapted to be connected to the joint element of adjacent track segments. Each track segment comprises longitudinally extending reinforcing elements which are embedded into the elastomeric material and which are extending between and coupled to both joint elements.

An annular support structure for a track vehicle is disclosed herein. The annular support structure includes a first piece and a second piece. The first piece includes a first hub portion, a first web extending radially outward from the first hub portion, and a first outer body extending radially outward from the first web. The second piece includes a second hub portion, a second web extending radially outward from the second hub portion, and a second outer body extending radially outward from the second web. The first piece and the second piece joined together at an inner joint located proximate to the first hub portion and the second hub portion and the first piece and the second piece adjacent to each other at an outer joint located proximate to the first outer body and the second outer body.

A track wheel for moving an object across a surface having a non-planar obstruction to allow smoother, easier and safer movement of the object over the obstruction. The track wheel has a track frame, a first wheel assembly, a second wheel assembly and a fluid-filled track assembly. The track frame interconnects the two wheel assemblies. The track assembly encircles the two wheel assemblies and frame in an endless loop manner. A mounting assembly connects the track frame to the object. The track assembly has a track link assembly and a pair of dampener tubes in the track link assembly. The track assembly passes into and out of a shield of the wheel assemblies that cleans the track assembly.

A track wheel for moving an object across a surface having a non-planar obstruction to allow smoother, easier and safer movement of the object over the obstruction. The track wheel has a track frame, a first wheel assembly, a second wheel assembly and a fluid-filled track assembly. The track frame interconnects the two wheel assemblies. The track assembly encircles the two wheel assemblies and frame in an endless loop manner. A mounting assembly connects the track frame to the object. The track assembly has a track link assembly and a pair of dampener tubes in the track link assembly. The track assembly passes into and out of a shield of the wheel assemblies that cleans the track assembly.

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 steel for a tracked undercarriage component is used as a material constituting a track link (9), for example, and contains: not less than 0.39% by mass and not more than 0.45% by mass of carbon, not less than 0.2% by mass and not more than 1.0% by mass of silicon, not less than 0.10% by mass and not more than 0.90% by mass of manganese, not less than 0.002% by mass and not more than 0.005% by mass of sulfur, not less than 0.1% by mass and not more than 3.0% by mass of nickel, not less than 0.70% by mass and not more than 1.50% by mass of chromium, and not less than 0.10% by mass and not more than 0.60% by mass of molybdenum, with the balance made of iron and unavoidable impurities.

A steel for a tracked undercarriage component is used as a material constituting a track link (9), for example, and contains: not less than 0.39% by mass and not more than 0.45% by mass of carbon, not less than 0.2% by mass and not more than 1.0% by mass of silicon, not less than 0.10% by mass and not more than 0.90% by mass of manganese, not less than 0.002% by mass and not more than 0.005% by mass of sulfur, not less than 0.1% by mass and not more than 3.0% by mass of nickel, not less than 0.70% by mass and not more than 1.50% by mass of chromium, and not less than 0.10% by mass and not more than 0.60% by mass of molybdenum, with the balance made of iron and unavoidable impurities.

The sprocket member keeps the sprocket centered within the link box while the notches or cut-outs allow mud, dirt, or other material to move out of the link box formed of the track chain assembly by two track bushings and two track links that form a rectangular shaped perimeter. The spacing provided by the wings of the sprocket member reduce wear on the track links near a track bushing and track link interface such as a press-fit connection by spacing the lugs of the sprocket member away from the interface.

The sprocket member keeps the sprocket centered within the link box while the notches or cut-outs allow mud, dirt, or other material to move out of the link box formed of the track chain assembly by two track bushings and two track links that form a rectangular shaped perimeter. The spacing provided by the wings of the sprocket member reduce wear on the track links near a track bushing and track link interface such as a press-fit connection by spacing the lugs of the sprocket member away from the interface.

A ground-engaging track system includes a track having a first track chain and a second track chain, and an idler having pockets formed in an outer idler rim to receive inboard rail protrusions on track links in the first track chain and the second track chain. The inboard rail protrusions project from an inboard link side, and a central pad of an upper rail surface in the track link includes an anti-scalloping bump-out formed on the inboard rail protrusion.