A rotating member attachment assembly includes a shaft including a cylindrical configuration defining a cylindrical axis, a first axial end and a second axial end along the cylindrical axis; a first coupler defining a first hole that defines a first hole axis and that is configured to receive the shaft, the first coupler further including a first inner axial end, and a first outer axial end; a first shaft bushing disposed on the shaft at the first axial end; and a first coupler bushing disposed in the first hole of the first coupler.

A spraying machine includes a machine body, a support frame, and a spraying portion. The support frame includes a horizontal frame having a length along a left-right direction, and a pair of vertical frames and each having a length along an up-down direction, and protruding downward from both ends of the horizontal frame. The spraying portion is supported by the support frame, and sprays a spraying material. The support frame is supported by the machine body to be rotatable around a rotation axis passing through a fulcrum portion provided on the horizontal frame and extending along a front-back direction, while maintaining a relative positional relationship between the pair of vertical frames and the horizontal frame.

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.

A working machine includes an undercarriage supported by first and second ground engaging units powered by first and second drive units, a main frame supported by the undercarriage, a first sensor configured to sense an orientation and relative angular motion of the main frame with respect to the undercarriage, a second sensor configured to sense an orientation and relative angular motion of the main frame in an external reference frame independent of the undercarriage, and a controller functionally linked to the first and second sensors. The controller is configured to receive commands corresponding to an intended movement of the first and second ground engaging units, and generate control signals to the first and second drive units to achieve or maintain the intended movement taking into account a detected orientation of the main frame relative to the undercarriage and a detected orientation of the main frame in the external reference frame.

A working machine includes an undercarriage supported by first and second ground engaging units powered by first and second drive units, a main frame supported by the undercarriage, a first sensor configured to sense an orientation and relative angular motion of the main frame with respect to the undercarriage, a second sensor configured to sense an orientation and relative angular motion of the main frame in an external reference frame independent of the undercarriage, and a controller functionally linked to the first and second sensors. The controller is configured to receive commands corresponding to an intended movement of the first and second ground engaging units, and generate control signals to the first and second drive units to achieve or maintain the intended movement taking into account a detected orientation of the main frame relative to the undercarriage and a detected orientation of the main frame in the external reference frame.

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.

A system and method for steering a machine. The system may comprise a controller configured to receive a steering command and determine a target angular turn rate for the body and a target turn direction for the body. The controller may be further configured to determine a steering mode based on a transmission output torque, the steering mode including Traction-steering, Assisted-steering or Implement-steering. When the steering mode is Assisted-steering, the controller is configured to steer the machine in the target turn direction and at the target angular turn rate by (a) moving an implement from a first position to a second position and (b) diverting or removing power from a first ground engaging traction member. When the steering mode is Implement-steering, the controller is configured to move the implement from a first position to a second position to steer the machine in the target turn direction and at the target angular turn rate without diverting or removing power from the first ground engaging traction member.

A radio-controlled vehicle includes a supporting structure, an engine unit, a kinetic unit and a remote control for operating the vehicle remotely, The radio-controlled vehicle also has a cab configured to house, in use, a person. The cab and the supporting structure are mutually movable with respect to each other to selectively arrange the cab in a desired position with respect to the supporting structure.

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.

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.