A work vehicle state detection system includes: a travel state detector provided in a work vehicle having a rotating machine and detecting a travel state of the work vehicle; a vibration sensor in the rotating machine; a travel state data acquisition unit acquiring travel state data indicating the travel state; a condition satisfaction determination unit determining whether the travel state satisfies a condition; a vibration detection data acquisition unit acquiring vibration detection data indicating a detection value of the vibration sensor when the travel state satisfies the condition; a normal vibration data storage storing normal vibration data indicating a detection value of the vibration sensor when the rotating machine is normal and the travel state satisfies the condition; and an analysis unit that, based on the vibration detection data and the normal vibration data, analyzes a state of the rotating machine when the vibration detection data is acquired.

A machine for road work, the machine can comprise: a frame; a rotor coupled to the frame and configured for rotational movement relative thereto; a milling system actuator configured to raise and lower the rotor to selectively disengage and engage with a surface of a working area; a first position sensor configured to sense a first position of a left side of the rotor relative to the surface; a second position sensor configured to sense a second position of a right side of the rotor relative to the surface; and a controller configured to, in response to signals received from the first position sensor and the second position senor, determine at least a cross-sectional area of the rotor that is engaging the surface.

An implement with a ground-engaging tool may include a frame, a ground-engaging portion for supporting the frame on a surface of ground, and a suspension system coupling the ground-engaging portion to the frame and for adjusting the frame relative to the ground-engaging portion. The implement may also include a tool supported by and adjustable relative to the frame and configured for working the ground. The implement may also include a control and monitor system configured for establishing a nominal position of the tool relative to the surface and for establishing an actual position of the tool relative to the surface based on an offset adjustment. A method of determining a rotor tool depth of a milling machine and a method of operating a milling machine may also be provided.

An implement with a ground-engaging tool may include a frame supported above a surface of a ground by a ground-engaging portion and a suspension, a tool supported by and adjustable relative to the frame and configured for working the ground, a housing arranged around portions of the tool and secured to the frame, and a monitor system configured for identifying an exposed condition of the tool. A method of managing an exposed condition of a ground-engaging tool and a method of operating an implement with a ground-engaging tool are also described.

An implement with a ground-engaging tool may include a frame supported above a surface of a ground by a ground-engaging portion and a suspension and a tool supported by and adjustable relative to the frame and configured for working the ground. The implement may also include a plurality of ground sensors configured for capturing distance measurements to determine the position of the frame relative to the surface and a control and monitor system configured for establishing a nominal scratch position of the tool relative to the surface based on the distance measurements. A method of controlling a rotor tool depth of a milling machine and a method of operating a milling machine are also described.

The invention provides a vehicle comprising a frame, at least one front wheel and at least one rear wheel, wherein the total number of front wheels plus rear wheels is at least three, drive means for driving at least one of the front wheels and rear wheels, a seat for a driver of the vehicle, and at least one fall prevention element on at least one longitudinal side of the seat to prevent, in a closed position of the fall prevention element, a driver sitting on the seat from falling off the seat and out of the vehicle. The fall prevention element is displaceable between an open position in which the driver can freely take a seat on the seat from the outer side of the vehicle via the space which, in the closed position, is occupied by the fall prevention element, or can step out of the vehicle, and the closed position. More specifically, the fall prevention element is slidable between the open position and the closed position, wherein the position of the fall prevention element in the open position, viewed in the viewing direction of a driver sitting on the seat, is situated behind the position of the fall prevention element in the closed position.

A suspension arrangement for a bogie beam for a vehicle includes a connector having an arrangement for pivotally connecting the connector to a vehicle main body for pivoting around a substantially horizontal bogie pivot axis. The suspension arrangement includes a resilient arrangement for connecting the connector and the bogie beam to each other.

A road work machine comprises a frame, a plurality of ground engaging units, a plurality of vertically moveable legs connecting the plurality of ground engaging units to the frame, respectively, a hydraulic system to control heights of the plurality of vertically moveable legs, pressure sensors for sensing hydraulic pressures in the plurality of vertically movable legs, and a controller configured to, in response to signals received from the pressure sensors, generate a control signal. A method for ride control can comprise adjusting an attitude of the machine in response to sensed pressures.

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 control method in a motor grader including a running wheel, an inclination mechanism which inclines the running wheel, an operation portion, and a sensor capable of detecting whether or not the running wheel is at an erect position includes outputting from a controller, a control signal for driving the inclination mechanism in response to an operation command in accordance with a state of operation onto the operation portion and stopping output of the control signal in response to the operation command when the sensor detects the erect position.