The invention relates to an automotive construction machine, in particular a road milling machine, recycler or surface miner, and to a method for displaying an image of the surroundings of an automotive construction machine. The construction machine according to the invention has an image display device for displaying a bird's eye view image of the surroundings of the construction machine, which image display device has a camera system with a plurality of cameras provided on the machine frame for recording individual overlapping image regions of the construction machine surroundings from different image recording positions, and an image processing system. The image processing system is configured in such a way that image details of the individual image regions are joined together to form a total image from a bird's eye view. For this purpose, the construction machine has a position detection device, which detects the height and/or the incline of the machine frame in relation to the ground surface and cooperates with the position detection device in such a way that when the image details of the individual image regions are joined together to form a total image from a bird's eye view, the course of the stitching which is located between the image details and within the overlapping regions of the image regions is determined depending on the height and/or the incline of the machine frame in relation to the ground surface.

A drive unit for a road-rail vehicle having at least four wheels, for movement on rails, wherein each wheel is driven by a separate hydraulic motor. Further the hydraulic motors driving the wheels situated on one side of a longitudinal central axis of the vehicle are connected in parallel.

Disclosed is a construction machine that enables an operator to operate a vehicle width changing control lever while visually confirming positions of crawlers. The construction machine includes a lower track structure 1 whose left and right crawler track devices 11A and 11B are adapted to change in spatial interval, and an upper swing structure 2 swingably mounted above the lower track structure. The construction machine further includes a hydraulically actuated cylinder for changing vehicle width, disposed between the left and right crawler track devices, the vehicle width changing cylinder changing the interval between the left and right crawler track devices upon supply and discharge of a hydraulic fluid being controlled by a vehicle width changing control valve, and a vehicle width changing control lever 34 disposed on a left section of a swing body support structure 50 relative to an operator's seat 23, the vehicle width changing control lever operating the vehicle width changing control valve.

The present disclosure relates to a track loader and may include a carriage on which a driving source and a lift arm that moves a bucket by receiving power from the driving source, an undercarriage for transporting the carriage, a suspension for buffering between the carriage and the undercarriage, and a bracket for mounting the suspension on the undercarriage, wherein the suspension includes a tube fixed to the carriage, a bar inserted into the tube, an elastic member interposed between the tube and the bar, a torsion arm connected to the bar, and an axle connected to the torsion arm, and since the axle is mounted on the bracket, it is possible to reduce an impact transferred from the undercarriage to the carriage while preventing sagging of a track.

In a construction machine where an arm, a working attachment, and a distal end portion of an extensible cylinder are coupled via a power link and an idler link, to achieve protection of a grease feeding piping when the grease feeding piping is arranged in the idler link, and to ensure that the structure of the idler link is not complicated. In an idler link, there is formed a protruding part which protrudes in a direction opposite to a bucket from a link body part of the idler link; there is provided a grease feeding piping arrangement space which extends in a link length direction, toward right and left inside of right and left outer side faces of the protruding part, with at least either one side of the side opposite to the bucket or right and left inward sides open; and a grease feeding piping is arranged in the grease feeding piping arrangement space, in a state of not protruding in a direction opposite to the bucket beyond a protruding distal end portion face of the protruding part and not protruding toward right and left inside beyond right and left inner side link faces of the link body part.

A vehicle having two configurations. The vehicle has two track frames, one on each side of a vehicle frame. The position of the track frames is adjustable relative to the vehicle frame by removing a connector, such as a first bolt, from a hole in the vehicle frame and a plate extending from the track frame. Another bolt is disposed in the vehicle frame and a slot in the plate. The track frame may be moved inwardly or outwardly to change the vehicle's configuration, and the first bolt reattached through the plate at a different hole in the vehicle frame.

Amphibious undercarriage systems, drive systems and work vehicles are disclosed herein. In an embodiment, an amphibious undercarriage system includes a pontoon, a first shaft, a second shaft, a track chain and at least one motor. The pontoon has a first end and a second end and is configured to float atop a liquid body. The first shaft is disposed at the first end of the pontoon. The second shaft is disposed at the second end of the pontoon. The track chain is movably attached to the pontoon so as to travel around the pontoon and moveably engaged with the first shaft and the second shaft. The motor is configured to drive the first shaft to cause the track chain to travel around the pontoon and the second shaft to rotate due to engagement with the track chain.

A vehicle having two configurations. The vehicle has two track frames, one on each side of a vehicle frame. The position of the track frames is adjustable relative to the vehicle frame by removing a connector, such as a first bolt, from a hole in the vehicle frame and a plate extending from the track frame. Another bolt is disposed in the vehicle frame and a slot in the plate. The track frame may be moved inwardly or outwardly to change the vehicle's configuration, and the first bolt reattached through the plate at a different hole in the vehicle frame.