A working vehicle has an undercarriage assembly configured to drive the working vehicle over ground and a chassis connected to the undercarriage assembly through a suspension system. The suspension system includes a mechanical spring, the mechanical spring having a first end connected to the undercarriage assembly and a second end. The suspension system includes a hydraulic cylinder, the hydraulic cylinder having a first portion that mounts to the second end of the mechanical spring and a second portion that connects to the chassis such that the mechanical spring and hydraulic cylinder are arranged in series between the undercarriage assembly and the chassis to modify the height of the chassis. The suspension system is configured to level the chassis to offset the effects of ballast weights or other external loads such as from a drawbar or 3-point hitch.

A working vehicle has an undercarriage assembly configured to drive the working vehicle over ground and a chassis connected to the undercarriage assembly through a suspension system. The suspension system includes a mechanical spring, the mechanical spring having a first end connected to the undercarriage assembly and a second end. The suspension system includes a hydraulic cylinder, the hydraulic cylinder having a first portion that mounts to the second end of the mechanical spring and a second portion that connects to the chassis such that the mechanical spring and hydraulic cylinder are arranged in series between the undercarriage assembly and the chassis to modify the height of the chassis. The suspension system is configured to level the chassis to offset the effects of ballast weights or other external loads such as from a drawbar or 3-point hitch.

A level-controllable crawler crane includes two crawler supports with rotating crawlers, which crawler supports are connected by a transversal bridge. A superstructure of the crawler crane includes a crane jib pivotable about a vertical axis and connected to the transversal bridge. A pivotable articulation connects the transversal bridge to the crane superstructure. At least one of the crawler supports is connected to the transversal bridge by a double link having a lower and an upper link. The lower link is articulated on the crawler support by a crawler support lower pivotable axis and on the transversal bridge by a transversal bridge lower pivotable axis. The upper link is articulated on the crawler support by a crawler support upper pivotable axis and on the transversal bridge by a transversal bridge upper pivotable axis. A drive pivots the links about the pivotable axis associated therewith.

A level-controllable crawler crane includes two crawler supports with rotating crawlers, which crawler supports are connected by a transversal bridge. A superstructure of the crawler crane includes a crane jib pivotable about a vertical axis and connected to the transversal bridge. A pivotable articulation connects the transversal bridge to the crane superstructure. At least one of the crawler supports is connected to the transversal bridge by a double link having a lower and an upper link. The lower link is articulated on the crawler support by a crawler support lower pivotable axis and on the transversal bridge by a transversal bridge lower pivotable axis. The upper link is articulated on the crawler support by a crawler support upper pivotable axis and on the transversal bridge by a transversal bridge upper pivotable axis. A drive pivots the links about the pivotable axis associated therewith.

Tracked piste grooming vehicle for maintenance and shaping of snowy terrain, including a crawler chassis which includes, on each side of the chassis, a respective drive wheel, at least four running wheels and a tension wheel, all enclosed by a crawler chain, wherein each running wheel is mounted on a chassis frame in a pretensioned manner by a suspension. Each side of the chassis includes five respective running wheels, with the suspensions thereof having a different pretensioning distribution considered over a vehicle length.

The invention relates to a load-carrying vehicle part with a first and a second wheel pair (10, 11), which are suspended in a respective bogie element (20) on each side of a frame member (14), a suspension (15) between each bogie element (20) and the frame member (14) on each side of the vehicle part to manipulate the frame member relative to the respective wheel pairs (10, 11), or support the frame member in a springing manner, each suspension (15) comprises a first and a second rocker arm (26A, 26B), wherein the first rocker arm is located in front of the second rocker arm viewed in the normal forward direction of driving of the vehicle part, that each rocker arm (26A, 26B) with its one end is pivotably in a joint (27, 27) in the frame member (14) and with its other end is pivotably in a joint (28, 28) in the bogie element (20) a first spring leg (25A) and a second spring leg (25B), wherein each spring leg with its one end (30) is articulately fastened to the frame member (14) and with its other end (31) is articulately fastened in a rocker arm (26A, 26B), a motion conversion arrangement (29) capable of converting a rotary motion in a joint (27, 28) for one of the rocker arms (26A, 26B) to a forward and backward translation motion.

The invention relates to a load-carrying vehicle part with a first and a second wheel pair (10, 11), which are suspended in a respective bogie element (20) on each side of a frame member (14), a suspension (15) between each bogie element (20) and the frame member (14) on each side of the vehicle part to manipulate the frame member relative to the respective wheel pairs (10, 11), or support the frame member in a springing manner, each suspension (15) comprises a first and a second rocker arm (26A, 26B), wherein the first rocker arm is located in front of the second rocker arm viewed in the normal forward direction of driving of the vehicle part, that each rocker arm (26A, 26B) with its one end is pivotably in a joint (27, 27) in the frame member (14) and with its other end is pivotably in a joint (28, 28) in the bogie element (20) a first spring leg (25A) and a second spring leg (25B), wherein each spring leg with its one end (30) is articulately fastened to the frame member (14) and with its other end (31) is articulately fastened in a rocker arm (26A, 26B), a motion conversion arrangement (29) capable of converting a rotary motion in a joint (27, 28) for one of the rocker arms (26A, 26B) to a forward and backward translation motion.

Disclosed are a special robot with complex terrain adaptive function and a motion and operation method thereof. The special robot comprises a crawler chassis, a shock absorption suspension assembly, a suspension adaptive adjustment assembly and an electronic control assembly. The present disclosure achieves an adaptive angle adjustment on the left and right sides of the shock absorption suspension assembly, including the independent pitch angle and roller angle adjustment on the left and right sides of the shock absorption suspension assembly by the configuration of structures such as the suspension adaptive adjustment assembly and then achieves the adaptability of the robot on complex and tough pavement conditions by the combination with a sensor for pavement perception, which ensures walking performance and attachment ability of mechanisms, further improves the load-bearing performance of the crawler robot, ensures the safety, stability and adaptability of the mobile platform.

Disclosed are a special robot with complex terrain adaptive function and a motion and operation method thereof. The special robot comprises a crawler chassis, a shock absorption suspension assembly, a suspension adaptive adjustment assembly and an electronic control assembly. The present disclosure achieves an adaptive angle adjustment on the left and right sides of the shock absorption suspension assembly, including the independent pitch angle and roller angle adjustment on the left and right sides of the shock absorption suspension assembly by the configuration of structures such as the suspension adaptive adjustment assembly and then achieves the adaptability of the robot on complex and tough pavement conditions by the combination with a sensor for pavement perception, which ensures walking performance and attachment ability of mechanisms, further improves the load-bearing performance of the crawler robot, ensures the safety, stability and adaptability of the mobile platform.

A suspension system for supporting a ground engaging member relative to a frame is provided. The suspension system includes a torsion axle assembly including an arm, an axle coupled to the ground engaging member and connected to the arm, a shaft connected to the arm and a tube that is connected to the frame. The tube is configured such that at least a portion of the shaft is received in the tube and supported by the tube for rotation relative to the tube and the frame. A lockout assembly includes a coupling mechanism that is selectively operable to fix the shaft against rotational movement with respect to the tube.