Abstract: A work vehicle surrounding area monitoring device includes an imaging unit, a bird's-eye view image creating unit, a display unit and a traveling state determining unit. When the work vehicle is in the stopped state, the bird's-eye view image creating unit is configured to use a first virtual projection plane to create the bird's-eye view image, and at least an outer edge portion of the first virtual projection plane has a shape that increases in height from the ground surface as a distance from the work vehicle increases. When the work vehicle is in the traveling state, the bird's-eye view image creating unit is configured to use a second virtual projection plane to create the bird's-eye view image, and at least an outer edge portion of the second virtual projection plane has a shape having a uniformly flat height from the ground surface.

Abstract: A work vehicle includes an engine, a travel device, a hydraulic pump, a work implement, a torque converter device, and a controller. The torque converter includes a torque converter and a lockup clutch. The controller is configured to switch the lockup clutch between a connected state and a non-connected state in accordance with a travel state of the work vehicle. The controller is configured to determine whether load increase conditions associated with an increase in load on the work implement are satisfied, and to control the lockup clutch so that the lockup clutch is in the non-connected state when the load increase conditions are satisfied.

Abstract: A dump truck includes radars attached, facing backward, to a position projected sideward a front fender extended from a lower deck to an upper deck of a front side of the vehicle, in which an irradiation beam has an angle of dip to cross at least a front wheel; and radars attached, facing sideward, to the side of the lower deck, and the radars and the radars are arranged such that a horizontal forward detection limit line of each of the radar and a horizontal backward detection limit line of each of the radar overlap and the horizontal backward detection limit lines of the radar are directed to a side of a center plane of the vehicle to detect the obstacle in the side of the vehicle.

Abstract: A work vehicle periphery monitoring system (10) is a system which monitors a periphery of a work vehicle with a vessel for loading a load thereon and includes: a plurality of radar devices (21 to 28) each of which is attached to the work vehicle and detects an object existing around the work vehicle and a controller (100) which notifies an alarm based on detection results of the radar devices (21 to 28) and switches between a notification mode for notifying the alarm and a restriction mode for stopping the notification of the alarm based on a state of the work vehicle.

Abstract: A dump truck with an obstacle detection mechanism capable of detecting an obstacle around a vehicle using a plurality of radars provided on peripheral of the vehicle, the dump truck includes radars arranged with respect to a vehicle center plane in a backside of a rear axle case and between joints of rear suspension cylinders on the rear axle case, wherein the radars are arranged such that irradiation center axes in a vertical direction have a predetermined angle of dip to detect an obstacle in a backside of the vehicle.

Abstract: A dump truck includes a body and a plurality of cameras. The body includes an upper deck and a main frame disposed in a longitudinal direction. The cameras are configured and arranged to obtain images to be combined to generate a bird's-eye image to monitor a periphery of the dump truck. The cameras include a front camera, a rear camera and side cameras. The front camera is disposed at the front of the upper deck to obtain an image of an area in front of the body. The rear camera is disposed at a rear end of the main frame to obtain an image of an area in rear of the body. The side cameras are respectively provided on left and right sides of the upper deck to obtain images of an area between diagonally to the front and diagonally to the rear of the body.

Abstract: A work vehicle surrounding area monitoring device includes an imaging unit, a bird's-eye view image creating unit, a display unit and a traveling state determining unit. When the work vehicle is in the stopped state, the bird's-eye view image creating unit is configured to use a first virtual projection plane to create the bird's-eye view image, and at least an outer edge portion of the first virtual projection plane has a shape that increases in height from the ground surface as a distance from the work vehicle increases. When the work vehicle is in the traveling state, the bird's-eye view image creating unit is configured to use a second virtual projection plane to create the bird's-eye view image, and at least an outer edge portion of the second virtual projection plane has a shape having a uniformly flat height from the ground surface.

Abstract: A periphery monitoring apparatus for a work vehicle is adapted to display an image of surroundings of the work vehicle on a display apparatus. The periphery monitoring apparatus includes a camera and a display control section. The camera is disposed below a vehicle body of the work vehicle, the camera being configured to acquire a camera image of the surroundings of the work vehicle. The display control section is configured to display the camera image acquired using the camera and a vehicle body outer edge line on the display apparatus. The vehicle body outer edge line indicates an outer edges of the vehicle body which is vertically projected on a ground surface in the camera image.

Abstract: A surrounding area monitoring device for a work vehicle includes a first imaging unit, a bird's-eye view image creating unit, and a display unit. The first imaging unit is mounted on the work vehicle and configured and arranged to capture an image of a first region in a surrounding area of the work vehicle to obtain a first image data. The birds-eye view image creating unit is configured to create a bird's-eye view image of the surrounding area of the work vehicle by projecting the first image data on a predetermined virtual projection plane. The display unit is configured and arranged to display the bird's-eye view image. The virtual projection plane includes a shape that increases in height from a ground surface as a distance from the work vehicle decreases.

Abstract: A perimeter monitoring device for a work vehicle is configured to monitor a surrounding of the work vehicle and display a monitored result on a display device. The perimeter monitoring device includes cameras, a bird's-eye image display unit, obstacle detecting sensors, a camera image specifying unit, and a camera image displaying unit. The camera image specifying unit is configured to specify one or more camera images in which one or more of obstacles are captured when the one or more of obstacles are detected by the obstacle detecting sensors. The camera image displaying unit is configured to display a relevant camera image in alignment with the bird's-eye image on the display device when a plurality of camera images are specified by the camera image specifying unit, the relevant camera image being ranked in a high priority ranking based on a priority order set in accordance with travelling states.

Abstract: A periphery monitoring apparatus for a work vehicle includes a plurality of obstacle detection sensors, a warning region setting section and a warning section. The obstacle detection sensors are mounted on the work vehicle, and each of the obstacle detection sensors is configured to determine a relative position of an obstacle with regard to the work vehicle by detecting the obstacle in the surroundings of the work vehicle. The warning region setting section is configured to set a warning region, where it is necessary to warn a driver of a presence of the obstacle, according to a movement state of the work vehicle. The warning section is configured to warn a driver that the relative position of the obstacle is positioned in the warning region.

Abstract: A periphery monitoring device (10) comprises a monitor (50) that displays a bird's-eye image (200) that includes an image of a dump truck (1), a payload meter ECU (21) that detects the load of the dump truck (1), and a controller (20) that switches the size of a cargo image (C1) displayed over the vessel (4) of the dump truck (1) and displays this image on the monitor (50) on the basis of the detection result of the payload meter ECU (21). In a load display device for a dump truck, a plurality of cameras are installed and the load display device monitors the periphery by using a bird's-eye image that combines images obtained by the plurality of cameras. The load display device includes a display component, a detector and a display controller. The display component is configured to display the bird's-eye image including an image of the dump truck. The detector is configured to detect a load of the dump truck.

Abstract: A work vehicle includes an engine, a travel device, a hydraulic pump, a work implement, a torque converter device, and a controller. The torque converter includes a torque converter and a lockup clutch. The controller is configured to switch the lockup clutch between a connected state and a non-connected state in accordance with a travel state of the work vehicle. The controller is configured to determine whether load increase conditions associated with an increase in load on the work implement are satisfied, and to control the lockup clutch so that the lockup clutch is in the non-connected state when the load increase conditions are satisfied.

Abstract: In a work vehicle, a controller controls an engine based on an engine torque curve for defining a relationship between an engine speed, an engine output torque, and an operation amount of an accelerator operation member. The controller controls the engine based on a first engine torque curve during torque conversion travel. The controller controls the engine based on a second engine torque curve during lockup travel. The engine output torque of the second engine torque curve is less than the engine output torque of the first engine to curve in at least a portion of a range of the engine speed when at least the operation amount of the accelerator operation member is a predetermined operation amount that is less than a maximum operation amount.