A working machine includes an undercarriage, a main frame, a swing bearing supporting the undercarriage from the main frame, a swing motor configured to pivot the main frame on the swing bearing about a pivot axis, a boom extending from the main frame along a working direction, and a pivot angle sensor configured to provide a pivot angle signal corresponding to a pivot position of the main frame relative to the undercarriage about the pivot axis. A controller is configured to receive the pivot angle signal and to drive the swing motor automatically.

A working machine includes an undercarriage, a main frame, a swing bearing supporting the undercarriage from the main frame, a swing motor configured to pivot the main frame on the swing bearing about a pivot axis, a boom extending from the main frame along a working direction, and a pivot angle sensor configured to provide a pivot angle signal corresponding to a pivot position of the main frame relative to the undercarriage about the pivot axis. A controller is configured to receive the pivot angle signal and to drive the swing motor automatically.

The present invention relates to an idler arrangement (80) for maintaining the desired tension in an endless track (34), said endless track (34) is part of a track assembly (30) comprising a track support beam (31), track road wheels (32) and at least one sprocket (33) arranged to drive the endless track (34) arranged around the track road wheels (32) and the sprocket (33), said idler arrangement (80) comprising: an idler wheel (35); an idler wheel support (81) fitted to the track support beam (31) and configured such that the idler wheel is movably arranged in relation to the support beam; a control unit (70); idler wheel position adjusting means operated by the control unit and arranged to position the idler wheel (35) in a desired position: and means for determine a requested torque to be applied by the sprocket and forwarding the determined information to the control unit, wherein the control unit is configured to operate the idler wheel position adjusting means to maintain, or adjust, the position of the idler wheel (35), based on a requested torque applied by the sprocket (33), to maintain the desired tension in the endless track (34). The invention furthermore relates to a method for operating the idler arrangement (80).

The present invention relates to an idler arrangement (80) for maintaining the desired tension in an endless track (34), said endless track (34) is part of a track assembly (30) comprising a track support beam (31), track road wheels (32) and at least one sprocket (33) arranged to drive the endless track (34) arranged around the track road wheels (32) and the sprocket (33), said idler arrangement (80) comprising: an idler wheel (35); an idler wheel support (81) fitted to the track support beam (31) and configured such that the idler wheel is movably arranged in relation to the support beam; a control unit (70); idler wheel position adjusting means operated by the control unit and arranged to position the idler wheel (35) in a desired position: and means for determine a requested torque to be applied by the sprocket and forwarding the determined information to the control unit, wherein the control unit is configured to operate the idler wheel position adjusting means to maintain, or adjust, the position of the idler wheel (35), based on a requested torque applied by the sprocket (33), to maintain the desired tension in the endless track (34). The invention furthermore relates to a method for operating the idler arrangement (80).

A vehicle is disclosed that includes various portions for carrying a rider and operation of the vehicle. The vehicle may be configured for operation of more than one surface or surface type. The vehicle has a selected suspension assembly for operation of various surface types.

A vehicle is disclosed that includes various portions for carrying a rider and operation of the vehicle. The vehicle may be configured for operation of more than one surface or surface type. The vehicle has a selected suspension assembly for operation of various surface types.

A milling machine may have a frame, a milling drum attached to the frame, and ground engaging tracks that support the frame and propel the milling machine in a forward or rearward direction. The milling machine may have height adjustable actuators connecting the frame to the tracks. Each actuator may have a cylinder attached to the frame, a piston slidably disposed within the cylinder, and a rod connected at a first end to the piston and connected to a track at a second end. The milling machine may have a tank storing hydraulic fluid and a fluid conduit connecting the tank to the cylinder. The milling machine may have a control valve selectively controlling a flow rate of the hydraulic fluid in the fluid conduit. The milling machine may also have a controller that determines a height of the frame relative to the ground surface based on the flow rate.

Disclosed is an unmanned robot for water quality management. An unmanned robot for water quality management according to the present disclosure includes a traveling unit provided with a pair of caterpillar treads mounted on both side surfaces of a body and including floating bodies having their own buoyancy, a drive motor that drives the traveling unit, a water quality measurement sensor that measures water quality of a water surface on which the unmanned robot for water quality management is operated, and a processor that controls the traveling unit so that the unmanned robot travels on the water surface to collect water quality data measured by the water quality measurement sensor.

Disclosed is an unmanned robot for water quality management. An unmanned robot for water quality management according to the present disclosure includes a traveling unit provided with a pair of caterpillar treads mounted on both side surfaces of a body and including floating bodies having their own buoyancy, a drive motor that drives the traveling unit, a water quality measurement sensor that measures water quality of a water surface on which the unmanned robot for water quality management is operated, and a processor that controls the traveling unit so that the unmanned robot travels on the water surface to collect water quality data measured by the water quality measurement sensor.

The present invention discloses a pipeline patrol inspection robot having variable tracks and a control method therefor. The pipeline patrol inspection robot of the present invention includes a robot body, track assemblies symmetrically disposed on a left side and a right side of the robot body, and a movement driving mechanism. The robot body is connected to the track assemblies on the left side and the right side by track fixtures, and track angle adjusting mechanisms are respectively connected between the robot body and the track assemblies on the left side and the right side. By means of the present invention, a track camber angle can be adjusted. In addition, each track angle adjusting mechanism is independent, and has desirable flexibility to adapt to different pipeline environments.