Crawled vehicle for the preparation of ski pistes; the crawled vehicle comprising a frame; two wheels assemblies displaced at opposite side with respect to the frame; two crawls, each of them wounded respectively around to one of the two wheels assemblies; and at least one supporting device, for each wheels assemblies, coupled to at least two wheels of the wheel assembly and connected in an articulated jointed manner to the frame for coupling the at least two wheels of the wheels assembly to the frame; wherein the supporting device has a first supporting element, which supports one of the at least two wheels of the wheels assembly; and a second supporting element, which supports another of the two wheels of the wheels assembly; and wherein the first supporting element and the second supporting element are connected to one another through a first articulated joint in a first point.

Example apparatuses and techniques have been presented for towing tracked vehicles at high speeds without various deficiencies and for allowing a vehicle to be configured to extend supplemental wheels from a storage configuration into a ground support configuration in which the vehicle is able to make use of the supplemental wheels for additional ground support.

Example techniques have been presented for providing tracked vehicles with deployable towing wheels. Such techniques involve a track vehicle having a vehicle body, a track coupled to the vehicle body, and a wheel assembly coupled to the vehicle body. The wheel assembly includes a wheel and is operable to assume a towing position in which at least a portion of the wheel extends below the track and enables the tracked vehicle to be towed on the wheel without the track making ground contact.

A track system comprising a dynamic tensioning device located between an idler wheel and the support frame as to apply proper tension in the track. The dynamic tensioning device is adapted to block at its current length upon the occurrence of a determined condition. The dynamic tensioner is adapted to substantially maintain its length when an acceleration and or deceleration of the track system reaches a predetermined value. For instance, such characteristic is relevant in an event of emergency braking. A dynamic tensioner would become contracted and the tension in the endless track would become too low. A low tension could cause the endless track to ratchet.

A mechanism for swinging and steering a support leg for a pavement milling machine is provided having a milling machine frame, a swing rod, a steering rod, a first guiding rod and a second guiding rod, the support leg includes a support leg exterior sleeve and a interior sleeve, the support leg exterior sleeve is sleeved onto the support leg interior sleeve, the support leg interior sleeve rotates relative to the exterior sleeve; one end of the swing rod is hinged to the milling machine frame, and the other end is fixedly connected to the exterior sleeve; one end of the second guiding rod is hinged to the milling machine frame, the other end is hinged to one end of the first guiding rod, the other end of the first guiding rod is hinged to one end of the steering rod, and the other end of the steering rod is connected to the support leg interior sleeve.

A giant six-legged polar research vehicle with tracked feet, including a platform, six legs arranged at six ends of the platform and six tracked feet arranged below the six legs. A monitoring device is arranged on a top cover. Six power compartments each having a steering device are arranged at six ends of a chassis in the platform. Each leg includes a main traveling device with an upper end and a lower end respectively connected to the steering device and a tracked foot, an auxiliary traveling device with an upper end and a lower end respectively connected to the chassis and the main traveling device, and a connecting device arranged on the main traveling device. The tracked foot includes a main flipping mechanism, an auxiliary flipping mechanism, a tracked foot slewing device, a crawler, a sliding plate and a suspension.

A multi-functional off-road vehicle has a frame which includes a left lateral frame member and a right lateral frame member. The two frame members are connected by a crossbar. Four wheel assemblies are connected to the frame. At least two of the wheel assemblies are continuous tracks. The crossbar includes a track width adjustment actuator which extends and contracts a length of the crossbar and thereby changes a track width of the vehicle.

Track system for a vehicle having a chassis and a drive shaft extending laterally outwardly from the chassis includes: An attachment assembly having a pivot. A multi-member frame assembly including: a leading frame member pivotably connected to the attachment assembly via the pivot for pivoting about a pivot axis; a trailing frame member pivotably connected to the attachment assembly via the pivot for pivoting about the pivot axis; a leading wheel-bearing frame member at least indirectly pivotably connected to the leading frame member; a trailing wheel-bearing frame member at least indirectly pivotably connected to the trailing frame member. A damper interconnecting the leading frame member and the trailing frame member. A leading idler wheel assembly; a trailing idler wheel assembly; support wheel assemblies; a gearbox; a sprocket wheel; and an endless track.

A road finisher includes an undercarriage, a chassis, a hopper, a paving screed, and a lifting device for lifting the chassis relative to the undercarriage at least in a rear region of the road finisher. A locking element can be moved by a locking element actuator between a locked state, in which the locking element mechanically locks the chassis at a predefined transport height relative to the undercarriage, and a release state, in which the mechanical locking of the chassis is released at the transport height.

A milling machine includes a milling assembly having a housing to which left and right end gates are attached, a controller, a right front lifting column, a left front lifting column and a rear lifting column. Elevation sensors are located at the front and rear of each of the end gates. The controller is operatively attached to the elevation sensors and to linear actuators within the lifting columns of the milling machine. The elevation sensor that is located at the front end of the right end gate will provide feedback to control the position of the right front lifting column, and the elevation sensor that is located at the front end of the left end gate will provide feedback to control the position of the left front lifting column. The elevation sensors that are located at the rear ends of the end gates are available, as selected by the operator, to provide feedback to control the positions of one of the right and left front lifting columns, as well as the rear lifting column.