Abstract: A management system configured to manage a plurality of movable bodies that travels a travel region, including: a work plan generating device configured to generate a work plan of the plurality of movable bodies based on a run-through ability of each of the plurality of movable bodies and a road surface condition that is a condition of a road surface of the travel region.

Abstract: A steering device for operating a work vehicle includes a support part, a base member rotatably supported by the support part, a lever rotatably supported by the support part or the base member, a biasing member and a transmission mechanism connecting part. The biasing member is interposed between the lever and the base member to bias the lever to a predetermined position with respect to the base member. The transmission mechanism connecting part configured to be connected to a transmission mechanism configured to transmit rotation based on a rotation angle of a steering shaft of the work vehicle to the base member. A restriction part may restrict rotation of the lever when an angle of the lever with respect to the base member reaches a predetermined angle.

Abstract: When an inclination angle is greater than or equal to a first threshold, a controller determines a displacement of a hydraulic pump from a command vehicle speed based on second pump data and determines a displacement of a hydraulic motor from the command vehicle speed based on second motor data. The second pump data defines the displacement of the hydraulic pump that is smaller than that of first pump data with respect to the command vehicle speed. The second motor data defines the displacement of the hydraulic motor that is smaller than that of first motor data with respect to the command vehicle speed.

Abstract: An exterior cover includes a left side panel and a right side panel opposite to each other in a left/right direction, a vent provided in left side panel, and a vent provided in right side panel. A battery is arranged between left side panel and right side panel, and supplies power to an electric motor. A hydraulic equipment is arranged forward of battery. A cooling device includes a cooling fan, and is arranged facing an area located between battery and hydraulic equipment in plan view in the left/right direction.

Abstract: An electric cylinder includes a shaft, a bearing that is provided in an outer circumference of the shaft, and a holder that surrounds the shaft with the bearing therebetween. The holder includes a holder main body opening in an axial direction of the shaft and supporting the shaft with the bearing therebetween, and a trunnion portion having a cylindrical shape protruding outward in a manner of intersecting the axial direction from the holder main body. The holder is constituted so as to allow a lubricant to circulate therein from a side outward in the axial direction of the holder main body toward an inner circumference of the trunnion portion.

Abstract: A surroundings monitoring system for a work machine includes: an object detection device that detects an object around the work machine including a cab; an external alarm device disposed outside the cab; an operator alarm device disposed inside the cab; and a processor. The processor sets, on the basis of input data for setting a control mode of the work machine from an input device, a control mode for controlling an operation of the work machine at a time when the object is detected to either an enabled mode in which at least a part of the operation of the work machine is restricted or a disabled mode in which the operation of the work machine is not restricted. The processor enables or disables the operator alarm device on the basis of the control mode that has been set.

Abstract: A captured image acquisition unit configured to acquire a captured image captured by an imaging device mounted on a work vehicle. A posture image acquisition unit configured to acquire a posture image representing at least one of a roll angle and a pitch angle of the work vehicle. A display image generation unit configured to generate a display image in which the posture image is disposed on the captured image so as to display the posture image at a position facing the operator's seat in a width direction of the display device. A display control unit configured to output a display signal for displaying a display image to the display device.

Abstract: A tunnel boring machine includes: a disc cutter including a cutter ring; and a member for use in measurement of a wear amount of the cutter ring with a three-dimensional shape measurement device, in which the member is provided at a part constant in relative position to the cutter ring.

Abstract: A hydraulic excavator as a work vehicle includes: a revolving frame; and a cab. The cab includes: a floor member that faces the revolving frame, with a gap therebetween; a support base provided on the floor member and supporting an operator's seat; a pillar member connected to a left end of the floor member; and a reinforcing member connected to the pillar member and the support base. The hydraulic excavator further includes a restriction member provided in the gap and protruding from the floor member toward the revolving frame. The restriction member has a protrusion length shorter than a length of the gap in an up-down direction, and is provided below the support base.

Abstract: A system controls a work machine that loads materials onto a conveyance vehicle. The system includes a controller and a detection device. The controller controls the work machine in an automatic control mode in which work is performed automatically. The detection device detects an approach of the conveyance vehicle toward the work machine. The automatic control mode includes a loading mode in which the work machine is caused to move to perform loading work for loading onto the conveyance vehicle, and an other mode other than the loading mode. The other mode includes at least one of a mode for gathering fallen materials and a digging mode for further increasing the materials by digging. The controller causes the automatic control mode to transition from the other mode to the loading mode when the approach of the conveyance vehicle is detected.

Abstract: A work machine comprises: a travel unit; a swing unit provided on the travel unit swingably; an angular velocity sensor that is attached to the swing unit and outputs an azimuthal angular velocity of the swing unit; a measurement device that measures an azimuth of the swing unit; and a controller that corrects the azimuthal angular velocity based on azimuth information measured by the measurement device and controls the swing unit based on the corrected azimuthal angular velocity.

Abstract: A construction management system includes a current terrain data creation unit that creates current terrain data of a construction site on which a work machine operates, a detection data acquisition unit that acquires detection data of a detection device that detects the construction site, a reflection unit that generates reflection data in which the detection data is reflected in the current terrain data, and an output unit that outputs the reflection data on a display device.

Abstract: A revolving frame revolves around a center of revolution. A battery is supported by the revolving frame. An electric motor is supported by the revolving frame and supplied with electric power from the battery. A hydraulic pump is supported by the revolving frame, driven by the electric motor, and arranged closer to the center of revolution than the electric motor in a plan view.

Abstract: An activation system of a work machine includes a vehicle body control unit outputting a control signal to drive a vehicle body of the work machine with power supplied by a power source, and an authentication unit performing authentication of an operator of the work machine. The activation system of a work machine first activates the authentication unit, and activates the vehicle body control unit when the authentication unit authenticates that the operator boarding the work machine is a specific operator.

Abstract: A management system of a work site includes: a workplace data acquisition unit that acquires workplace data set in a workplace where an unmanned haul vehicle travels; and a sprinkling area setting unit that sets, on the basis of the workplace data, a sprinkling area on which the unmanned sprinkler vehicle sprinkles water in the workplace.

Abstract: A terminal includes a display unit, a map information storage unit that stores map information including a traveling route of a work vehicle in association with absolute position information, a display control unit that displays the map, an indication reception unit that receives first indication information indicating, on the map, an acquisition start position where acquisition of operation information of the work vehicle starts and second indication information indicating, on the map, an acquisition end position where the acquisition of the operation information ends, a first setting unit that sets the acquisition start position to cross the traveling route based on the map information and the first indication information, a second setting unit that sets the acquisition end position to cross the traveling route based on the map information and the second indication information, and an output unit that outputs information regarding the set acquisition start position and acquisition end position.

Abstract: A work machine control device includes a lift force detection unit, a control amount determination unit, and a command output unit. The lift force detection unit detects a lift force of the work machine. The control amount determination unit determines a control amount for the work machine based on a change amount of the detected lift force. The command output unit outputs, to an actuator driving the work machine, a control command according to the determined control amount. The control amount determination unit determines the control amount such that the control amount monotonically increases with respect to the lift force until a lift amount of the work machine reaches a predetermined threshold. A work vehicle includes the work machine control device, a vehicle body, a work machine supported by the vehicle body, and an actuator that drives the work machine.

Abstract: A blade control method includes: acquiring a design surface indicating a target shape of an excavation object to be excavated by a blade supported by a vehicle body of a work vehicle, the design surface including a first surface present in front of the work vehicle and a second surface having a slope different from a slope of the first surface; acquiring an observed pitch angle indicating an inclination angle of the vehicle body in a longitudinal direction; and calculating a planned pitching angle indicating a deviation between the observed pitch angle and a design surface pitch angle indicating an inclination angle of the second surface in a state in which the vehicle body is positioned on the first surface and the blade is positioned above the second surface.

Abstract: There is provided a control device that controls an injection amount of a reducing agent to be supplied to a selective reduction catalyst provided in an exhaust passage of an internal combustion engine. The control device includes a pre-correction injection amount calculation unit configured to calculate a pre-correction injection amount of the reducing agent based on an operating state of the engine, and an injection amount correction unit configured to calculate a corrected injection amount obtained by correcting the pre-correction injection amount, based on a rate of change over time of a rotation speed of the engine and a rate of change over time of a fuel injection amount of the engine, such that the injection amount of the reducing agent increases when at least both the rate of change over time of the rotation speed and the rate of change over time of the fuel injection amount are positive.

Abstract: A piston is provided with a piston body that includes an internal space and a leading end member that includes an insertion portion placed in the internal space and a protrusion protruding from a leading end surface of the piston body.