Abstract: An unmanned vehicle management system includes: a traveling area definition unit that defines a traveling area on a traveling path of a work site; and a determination unit that determines whether or not an unmanned vehicle can enter the traveling area on the basis of a vehicle width indicating the width of the unmanned vehicle and a track width indicating the width of the traveling area.

Abstract: A controller specifies a diagnosed portion to be diagnosed in a motor grader based on candidate information of an abnormality candidate in the motor grader, specifies a first sensor connection position of a diagnosis sensor for diagnosis of the diagnosed portion, and controls a display apparatus to display position information of the first sensor connection position.

Abstract: A work machine start-up system includes a control unit configured to control a work machine, a proximity detection unit configured to detect that a specific operator is in close proximity to the work machine, and a start-up unit configured to start at least part of the control unit when it is detected that the specific operator is in close proximity to the work machine.

Abstract: A construction management system includes an output unit that causes a display device to display a remotely operable work machine, a selection data acquisition unit that acquires machine selection data indicating specification of the work machine, and a remote operation permission unit that permits start of a remote operation of the work machine based on the machine selection data.

Abstract: An authentication unit performs authentication of an operator. A storage unit stores setting data associated with a plurality of operators. A vehicle body control unit outputs a control signal to drive a vehicle body of the work machine with power supplied by a power source, based on the setting data associated with the authenticated operator. The authentication unit receives the authentication when the power source is stopped and does not receive the authentication when the power source is driven.

Abstract: A work machine control device includes a measurement-data acquisition unit that acquires measurement data of a three-dimensional measurement device that is mounted on a work machine including work equipment and measures a three-dimensional shape including a ridgeline of a work target on which the working equipment performs work, and a target calculation unit that calculates and outputs, based on the measurement data regarding the ridgeline of the work target, a distance from the work machine to the work target or an angle of repose of the work target.

Abstract: An excavator includes: a swing motor driven by oil from a swing pump coupled to a power take-off and driven by an engine; a first main oil passage connecting a first discharge port of the swing pump and a first suction port of the swing motor; a second main oil passage connecting a second discharge port of the swing pump and a second suction port of the swing motor; a neutral retention valve disposed in the first main oil passage and the second main oil passage and controlling passage of oil; a regenerative energy absorbing device coupled to the power take-off and absorbs regenerative energy generated by oil from the swing motor to the swing pump via a meter-out opening of the neutral retention valve; and a valve control section controlling an area of the meter-out opening based on a state of the regenerative energy absorbing device.

Abstract: A movement processing unit generates a work equipment operation signal for moving a bucket to a loading point and a swing operation signal related to a target swing speed, based on a command for starting an automatic movement of the bucket. A target speed changing unit changes the target swing speed so that the work equipment does not interfere with the loading target during a swing of a swing body.

Abstract: A power transmission device includes an input shaft, an output shaft, a differential device, a continuously variable transmission unit, and a control device. The differential device includes a first rotation element connected to the input shaft, a second rotation element connected to the output shaft, and a third rotation element. The continuously variable transmission unit includes a conversion unit configured to convert rotational power of the third rotation element into an other power, and a reconversion unit configured to reconvert the converted other power into the rotational power and supply the reconverted rotational power to the output shaft. The control device includes a continuously variable transmission control unit configured to generate a control signal of the continuously variable transmission unit such that the other power generated by the conversion unit exceeds the other power input to the reconversion unit.

Abstract: A hydraulic pump is driven by an engine. A hydraulic motor is driven by hydraulic fluid discharged from the hydraulic pump thereby causing a vehicle to travel. A controller controls a rotation speed of the engine and a displacement of the hydraulic pump. The controller acquires a tractive force of the vehicle. The controller changes the rotation speed of the engine to a low speed side in accordance with a reduction in the tractive force.

Abstract: A control device for a power machine includes a target circuit pressure specifying unit configured to specify a target circuit pressure of the hydrostatic continuously variable transmission, a measurement value acquisition unit configured to acquire an actual circuit pressure of the hydrostatic continuously variable transmission, a brake torque determination unit configured to determine a brake torque based on the target circuit pressure and the actual circuit pressure, and a pump control unit configured to control the hydraulic pump based on the brake torque. The brake torque is a torque consumed by the hydraulic pump.

Abstract: A detection device includes a photographing unit, a first holding portion holding the photographing unit, a magnet having an attracting face facing a flow space in which fluid flows and opposed to the photographing unit via the flow space, a second holding portion holding the magnet, and a connection portion connected to the second holding portion and having an opening portion.

Abstract: A wheel loader as a work vehicle includes a ladder, an operator's compartment, an actuator, an operation unit, and a controller. The operator's compartment has an openable and closable door disposed above the ladder. The actuator is disposed at the operator's compartment so as to actuate the door to make an opening motion. The operation unit receives an operation from an operator. The controller controls the drive of the actuator, based on an operation signal received from the operation unit, so that the door makes an opening motion while the operation unit is receiving an operation from the operator.

Abstract: The louver 1 includes a first member 2 including a lid portion 22, slits 24 disposed at intervals from the lid portion 22, and rising portions 25 and rising portions 26 extending from peripheral edge portions of the slits 24 toward one side in a depth direction and a second member 3 including a lid portion 32, slits 34 disposed at intervals from the lid portion 32, and rising portions 35 and rising portions 36 extending from the peripheral edge portions of the slits 34 toward the other side in the depth direction. The first member 2 and the second member 3 are disposed to face each other and the slits 24 of the first member 2 and the slits 34 of the second member 3 are disposed to be shifted from each other.

Abstract: A charging control device (1A) according to the present invention includes a determination part that determines whether or not an abnormality in input power occurs on the basis of input power information on the input power and a predetermined determination threshold value. The determination part makes the determination on the basis of the input power information when a predetermined time has passed after an input of the input power.

Abstract: A work machine includes work equipment. A control device of the work machine includes a trajectory generation unit, and an operation signal output unit. The trajectory generation unit generates a target trajectory of the work equipment according to an excavation curve ratio determined in advance. The excavation curve ratio is expressed as a ratio of an excavation depth to an excavation length. The operation signal output unit outputs an operation signal for the work equipment according to the target trajectory.

Abstract: A boom cylinder drives a boom, and includes a head side oil chamber and a bottom side oil chamber. A first valve includes a first opening for discharging oil in the head side oil chamber to an oil tank, and supplies oil from a hydraulic pump to the head side oil chamber. A second valve includes a second opening for discharging oil in the bottom side oil chamber to the oil tank, and supplies oil from the hydraulic pump to the bottom side oil chamber. A controller individually controls an opening degree of the first opening and an opening degree of the second opening, during work including manipulation of the boom.

Abstract: A dump truck includes an engine, a cab floor disposed above the engine and configured to support a cab, a first aftertreatment device configured to treat exhaust gas discharged from a first exhaust pipe of the engine, and a second aftertreatment device configured to treat exhaust gas discharged from a second exhaust pipe of the engine. The first aftertreatment device and the second aftertreatment device are disposed side by side in a vehicle width direction behind the engine and below the cab floor.

Abstract: A control device for a working machine includes a position designation receiving unit configured to identify a designated position in a state image which is displayed on a display panel and a screen control unit configured to perform screen control based on an image displayed at the identified position out of part images constituting parts of the state image.

Abstract: A type information input unit receives an input of type information for identifying an attachment. A storage unit stores in advance correspondence between the type information and a weight or weight classification of the attachment. A specification unit specifies a corresponding weight or weight classification based on the type information input to the type information input unit.