A radio-controlled vehicle having a frame, a left undercarriage and a right undercarriage; wherein the frame has a front guide and a rear guide, each configured to house a respective cylinder; each undercarriage having a front slide and a rear slide, which are connected in a sliding manner to the front guide and to the rear guide, respectively; wherein each cylinder is configured to selectively vary the distance between the longitudinal axis of the frame and the longitudinal axis of each undercarriage; wherein each undercarriage comprises an anti-derailment plate.

A track system connectable to an axle of a vehicle has a track engaging assembly and an endless track. The track engaging assembly includes a frame, a drive wheel, front and rear idler wheel assemblies, a bogie assembly and a plurality of support wheel assemblies which includes leading, intermediate and trailing wheel assemblies that respectively apply leading, intermediate and trailing ground forces to a ground surface. A sum of the leading, intermediate and trailing ground forces defines a total ground force. The track system has an initial position wherein the total ground force is concentrated at the intermediate ground force, when the track system is at rest on a hard and flat level ground surface. In response to the bogie assembly pivoting about the bogie assembly axis, the total ground force is distributed between the intermediate ground force and at least one of the leading and trailing ground forces.

A track system connectable to an axle of a vehicle has a track engaging assembly and an endless track. The track engaging assembly includes a frame, a drive wheel, front and rear idler wheel assemblies, a bogie assembly and a plurality of support wheel assemblies which includes leading, intermediate and trailing wheel assemblies that respectively apply leading, intermediate and trailing ground forces to a ground surface. A sum of the leading, intermediate and trailing ground forces defines a total ground force. The track system has an initial position wherein the total ground force is concentrated at the intermediate ground force, when the track system is at rest on a hard and flat level ground surface. In response to the bogie assembly pivoting about the bogie assembly axis, the total ground force is distributed between the intermediate ground force and at least one of the leading and trailing ground forces.

A support structure for a track system is disclosed. The support structure has leading and trailing linkages which are pivotally connectable to a frame member of the track system through, respectively, leading and trailing pivots. The leading linkage is pivotally connected to the trailing linkage through an intermediate pivot. The support structure has at least one biasing assembly. Leading, intermediate and trailing support wheel assemblies are connected to the support structure, which is adapted to move such that when the leading support wheel assembly moves in a first direction, the intermediate support wheel assembly moves in a second direction, and the trailing support wheel assembly moves in the first direction. A track system having the support structure and a vehicle having the track system is also disclosed.

An endless track for a tracked vehicle includes a track body and a plurality of cores at least partially embedded the track body, each core having at least one roller surface configured to contact an outer flange of a track roller when the track roller is engaged with an inner surface of the track body, and at least one protrusion configured to contact an inner flange of the track roller when the track roller is engaged with the inner surface of the track body. The track roller is configured to simultaneously contact a first core and an adjacent second core. A distance between the first core and the second core is selected such that about 0.2% of a flange diameter of the track roller extends perpendicular to an axis between a first contact point on the first core and a second contact point on the second core.

An elastic crawler with excellent durability is provided. The elastic crawler of the present disclosure includes a crawler body (2) made of an elastic material, and a plurality of protrusions (3) arranged on an inner circumferential surface (21) of the crawler body (2). The protrusions (3) each include an elastic material portion (31) and a resin member (32). The resin member (32) includes a crawler widthwise side face portion (321). The side face portion (321) has a crawler thicknesswise end face (325A) configured to form a boundary surface (BS) with the elastic material portion (31). The end face (325A) has a concave or convex shape in a crawler widthwise view.

In regard to a hydraulic hose that extends from a center frame side in a lower travel body and is connected to a travel motor in each of right and left travel sections, it is possible to limit a movement range of a hydraulic hose with a simple configuration and thus to suppress damage to the hydraulic hose. A lower travel body that supports an upper unit includes: a center frame that supports the upper unit; a side frame that is provided on both of right and left sides of the center frame to support a travel motor and constitutes a crawler-type travel section; and plural hydraulic hoses, one end side of each of which is connected to a swivel joint provided to the center frame, and the other end side of each of which is connected to the travel motor. The center frame includes: a rear wall having a guide hole, through which the hydraulic hose passes; and a hose guide that is located below the guide hole, located above the hydraulic hose, and thereby restricts upward movement of the hydraulic hose.

To prevent vertical vibration of track rollers as much as possible when transferring between overhanging portions of each core metal while securing the flexibility of a crawler main body.

The present invention includes core metals 10 embedded in a crawler main body 9 at substantially equal intervals, and rolling paths 12, 13 for track rollers arranged on both sides in a crawler width direction of an anti-tread side of the crawler main body 9, and includes overhanging portions 24 to 27 on both sides in a crawler rotation direction of each core metal 10, overhanging from each core metal 10 toward both sides in the crawler rotation direction to support each of the rolling paths 12, 13. The respective overhanging portions 24 to 27 corresponding to the respective rolling paths 12, 13 of each core metal 10 are arranged such that at least tip portions are arranged so as to shift in the crawler width direction within a width of each rolling path 12, 13. Of each of the core metals 10, the overhanging portion 25 of one core metal 10 and the overhanging portion 26 of the other core metal 10 are arranged such that their tips are close to each other or overlap with each other in the crawler rotation direction.

A special suspension-type tracked underwater robot adaptable to ultra-soft geological conditions comprises traveling mechanisms, wherein the traveling mechanisms are track-mud sled structures, the mud sled structures are fixedly arranged on two sides of each track, and the bottoms of the mud sled structures are higher than the bottoms of the tracks and are provided with arched plate heads; the arched plate heads are provided with plate water-jet devices capable of spraying water forwards; and in the traveling process of the traveling mechanisms, and the arched plate heads press water downwards to form a water film at the bottoms of the mud sled structures together with the water sprayed by the plate water-jet devices, so that the traveling mud resistance is reduced, and the robot can stably advance under ultra-soft geological conditions. The special suspension-type tracked underwater robot further comprises a propelling mechanism, an adjustment device, an operating module, and the like, can autonomously advance on a seabed, can suspend in water, can repair itself when broken, and can achieve detailed operations.

Track system to be mounted on a vehicle in place of a rotatable OEM tire/wheel assembly, including: A frame. A drive wheel is rotatably mounted on the frame, operatively connectable to the drive shaft of the vehicle, and has a diameter of between 65% and 100% of the OEM tire diameter. Leading and trailing idler wheel assemblies are mounted on the frame. An endless track having an inner surface is disposed around the drive wheel, the leading and trailing idler wheel assemblies. The endless track has an unsupported portion between the drive wheel and one of the leading and trailing idler wheel assemblies. The unsupported portion has a length and a center. The unsupported portion deflects a distance of between 8% and 12% of its length on application of a 25-lb. force at its center.