Abstract: A system includes an onboard controller, a remote operation device, and a communication unit. The remote operation device transmits a start command signal for starting the work machine to the work machine. The communication unit communicates with the onboard controller. The communication unit is configured to be operated to switch the work machine from a start prohibited state to a start permitted state. The onboard controller switches the work machine from the start prohibited state to the start permitted state according to an operation of the communication unit. The onboard controller prohibits the work machine from starting when the work machine is in the start prohibited state upon receiving the start command signal from the remote operation device. The onboard controller starts the work machine when the work machine is in the start permitted state upon receiving the start command signal from the remote operation device.

Abstract: A control system for a work vehicle, which includes a vehicle body and work equipment that is changeable in height and pitch with respect to the vehicle body, includes a controller. The controller determines a switching point by referring to target displacement data indicating a target displacement of the height of the work equipment according to a movement amount of the work vehicle from a work start position. The controller determines whether or not the work vehicle has reached the switching point based on the movement amount of the work vehicle from the work start position. The controller outputs a command to change the pitch of the work equipment upon determining that the work vehicle has reached the switching point.

Abstract: A system controls a work machine including a work implement. The system includes a sensor and a controller. The controller acquires current position data of the work machine, acquires actual topography data, acquire default target displacement data that defines a target displacement according to a movement amount of the work machine, acquires a work interval indicative of a distance between a previous start position of work by the work machine and a current start position behind the previous start position, generates modified data with the default target displacement data modified according to the work interval, refers to the modified data to determine the target displacement according to the movement amount of the work machine from the current start position, determines topography data with the actual topography data vertically displaced downward by the target displacement as a target profile, and moves the work implement according to the target profile.

Abstract: A work machine comprises a body, a ripper apparatus that is disposed behind the body, and an imaging device that is mounted to the body and images the ripper apparatus. The ripper apparatus includes a shank, a ripping tip that is attached to an end of the shank, a beam that supports the shank, and a ripper arm that interconnects the body and the beam. The imaging device images the ripper apparatus sideways and captures an image in a range including at least a portion of the shank, at least a portion of the beam, and at least a portion of the ripper arm.

Abstract: A controller controls the steering device so as to cause a vehicle body to turn toward the left when a left steering lever is operated without a right steering lever being operated. The controller controls the steering device so as to cause the vehicle body to turn toward the right when the right steering lever is operated without the left steering lever being operated. The controller reduces the rotation speed of the engine when both the left steering lever and the right steering lever are operated and both the operation amount of the left steering lever and the operation amount of the right steering lever are equal to or greater than a first threshold.

Abstract: When left and right steering levers are both operated and the operation amount of the left lever is larger than that of the right lever, a controller calculates a correction left operation amount of the left lever according to the operation amount of the right lever, and controls a left steering clutch so as to cause a vehicle body to turn toward the left in accordance with the correction left operation amount. When left and right steering levers are both operated and the operation amount of the right lever is larger than that of the left lever, the controller calculates a correction right operation amount of the right lever according to the operation amount of the left lever, and controls a right steering clutch so as to cause the vehicle body to turn toward the right in accordance with the correction right operation amount.

Abstract: An amount of information of data of a captured image displayed on a display unit is increased. A display control unit sets a plurality of divided display sections for a display unit. The display control unit sets a first camera group and a second camera group including one or more of a plurality of cameras. The first camera group captures an image of a work performed with a blade. The second camera group captures an image of a work performed with a ripper. The display control unit displays data of captured images output from cameras included in one of the first and second camera groups in a corresponding plurality of divided display sections.

Abstract: When left and right steering levers are both operated and the operation amount of the left lever is larger than that of the right lever, a controller calculates a correction left operation amount of the left lever according to the operation amount of the right lever, and controls a left steering clutch so as to cause a vehicle body to turn toward the left in accordance with the correction left operation amount. When left and right steering levers are both operated and the operation amount of the right lever is larger than that of the left lever, the controller calculates a correction right operation amount of the right lever according to the operation amount of the left lever, and controls a right steering clutch so as to cause the vehicle body to turn toward the right in accordance with the correction right operation amount.

Abstract: A controller controls the steering device so as to cause a vehicle body to turn toward the left when a left steering lever is operated without a right steering lever being operated. The controller controls the steering device so as to cause the vehicle body to turn toward the right when the right steering lever is operated without the left steering lever being operated. The controller reduces the rotation speed of the engine when both the left steering lever and the right steering lever are operated and both the operation amount of the left steering lever and the operation amount of the right steering lever are equal to or greater than a first threshold.

Abstract: Provided is a bulldozer enabling the visibility of a rearward area of the bulldozer's body to be improved. The bulldozer includes a cab for an operator to be aboard, a fuel tank disposed rearward of the cab, and a work platform serving as a scaffold for an operator. A notch is formed at a front edge of the work platform.

Abstract: A first grille member extends from the left side of the vehicular body toward the right side. A second grille member extends from the first grille member further toward the right side. A first pivot shaft is provided at the left side of the vehicular body. The first pivot shaft extends in the top-bottom direction of the vehicular body and pivotably supports the first grille member. A second pivot shaft extends in parallel with the first pivot shaft and couples the second grille member to the first grille member so that the second grille member is pivotable with respect to the first grille member. A fan module is pivotable about a third pivot shaft provided at the left side of the vehicular body and extending in parallel with the first pivot shaft, and at least a part of the fan module is movable to an outside of the vehicular body.

Abstract: Provided is a bulldozer enabling the visibility of a rearward area of the bulldozer's body to be improved. The bulldozer includes a cab for an operator to be aboard, a fuel tank disposed rearward of the cab, and a work platform serving as a scaffold for an operator. A notch is formed at a front edge of the work platform.

Abstract: A first grille member extends from the left side of the vehicular body toward the right side. A second grille member extends from the first grille member further toward the right side. A first pivot shaft is provided at the left side of the vehicular body. The first pivot shaft extends in the top-bottom direction of the vehicular body and pivotably supports the first grille member. A second pivot shaft extends in parallel with the first pivot shaft and couples the second grille member to the first grille member so that the second grille member is pivotable with respect to the first grille member. A fan module is pivotable about a third pivot shaft provided at the left side of the vehicular body and extending in parallel with the first pivot shaft, and at least a part of the fan module is movable to an outside of the vehicular body.

Abstract: There is provided a running device for track-laying vehicle, which can resolve a feeling of fear of falling height in a leading end portion of a crawler while relax a large impact when the crawler runs over a raised contact area. The running device includes a spring constant equalizing unit that equalizes an apparent spring constant of a second arm of lower track roller bogie device over a total length. The apparent spring constant is generated in maximum reverse camber of the crawler. The spring constant equalizing unit increases an oscillation angle ? of the second arm that can abut on the first arm in the maximum reverse camber of the crawler such that the oscillation angle ? of the second arm is larger than a crossing angle ? of the connecting link. Desirably the increased maximum oscillation angle of the second arm is 1.3-2.0 times the crossing angle ?.

Abstract: There is provided a running device for track-laying vehicle, which can resolve a feeling of fear of falling height in a leading end portion of a crawler while relax a large impact when the crawler runs over a raised contact area. The running device includes a spring constant equalizing unit that equalizes an apparent spring constant of a second arm of lower track roller bogie device over a total length. The apparent spring constant is generated in maximum reverse camber of the crawler. The spring constant equalizing unit increases an oscillation angle ? of the second arm that can abut on the first arm in the maximum reverse camber of the crawler such that the oscillation angle ? of the second arm is larger than a crossing angle ? of the connecting link. Desirably the increased maximum oscillation angle of the second arm is 1.3-2.0 times the crossing angle ?.