A display system includes: a work machine image generation unit that generates, on the basis of detection data of a position of a work machine including working equipment and detection data of attitude of the work machine, a work machine image representing a virtual viewpoint image of the work machine viewed from a virtual viewpoint outside the work machine; a transport vehicle image generation unit that generates, on the basis of detection data of a position of a transport vehicle and detection data of attitude of the transport vehicle, a transport vehicle image representing a virtual viewpoint image of the transport vehicle viewed from the virtual viewpoint; a combining unit that generates a combined image in which the work machine image and the transport vehicle image are superimposed; and a display control unit that causes the combined image to be displayed on a display apparatus present outside the work machine.

A drive assembly for a work vehicle includes a drive housing, a drive shaft rotatable about a drive axis, an inner hub rotationally fixed to the drive shaft, and a planetary gear set coupled to the drive shaft and configured to selectively rotate an output element. The drive assembly also includes a clutch arrangement having a clutch ring configured to selectively engage the planetary gear set. The clutch arrangement further includes a guide assembly mounted on the clutch ring and configured to selectively interact with the planetary gear set to effect disengagement of the clutch ring from the planetary gear set. A clutch actuation assembly is configured to effect movement of the clutch arrangement along the drive axis to engage the planetary gear set, and a guide actuation assembly is configured to operate the guide assembly to interact with the planetary gear set.

A wheeled work vehicle includes: a transmission transmitting the rotational power of a traveling hydraulic motor to wheels; a traveling control valve having an interruption position that interrupts supply of hydraulic fluid from a hydraulic pump to the traveling hydraulic motor; a shift changeover valve that shifts the speed stage of the transmission by the position of the shift changeover valve being selectively switched; and a controller that controls the traveling control valve and the shift changeover valve. The controller switches the traveling control valve to the interruption position, then switches the position of the shift changeover valve such that the speed stage of the transmission is shifted to the low speed stage, and switches the traveling control valve from the interruption position to an original position side before the switching in a case where the controller shifts the transmission from the high speed stage to the low speed stage.

A device for detecting a rotary angle used for an excavator. The device can include: a synchronous belt, arranged around a rotating shaft of a slewing mechanism of the excavator, a tooth-shaped surface of the synchronous belt being away from a surface of the rotating shaft; a transmission part, engaged with the tooth-shaped surface of the synchronous belt and arranged on a supporting base; an angle detection part, in transmission connection to the transmission part; and the supporting base, connected to a chassis of the excavator.

A movement processing unit is configured to generate operation signals of a work equipment and a swing body for moving a bucket to a loading point based on a start command of an automatic movement of the bucket. A stop processing unit is configured to brake a swing of the swing body based on a stop command of the automatic movement of the bucket, and is further configured to generate an operation signal for retreating the work equipment when a height of the bucket is lower than the loading point.

A time period for which an ineffective operation is performed during an excavation work is reduced. A work machine includes a vehicular body, a running wheel rotatably attached to the vehicular body, a work implement operable with respect to the vehicular body, an operation apparatus for operating the running wheel and the work implement, and a controller that controls an operation by the work machine. The controller determines that an ineffective operation in which the work implement does not work is being performed during the excavation work based on an operation command value output from the operation apparatus and notifies an operator of occurrence of the ineffective operation.

A ladder motor pump system comprises a hydraulic fluid tank that holds hydraulic fluid, a hydraulic pump that draws and pressurizes the hydraulic fluid from the hydraulic fluid tank, a one-way electric motor that drives the hydraulic pump, a hydraulic ladder actuator that actuates a ladder in first and second patterns, a hydraulic fluid circuit that routes the hydraulic fluid from the hydraulic ladder actuator to the hydraulic fluid tank, and a regulator that routes the pressurized hydraulic fluid from an outlet of the hydraulic pump to the hydraulic fluid tank when a pressure of the pressurized hydraulic fluid exceeds a preselected threshold pressure, mixing the pressurized hydraulic fluid with the unpressurized hydraulic fluid in the hydraulic fluid tank and reducing temperature of the pressurized hydraulic fluid. The electric motor and the pump include bosses providing increased ground connections to the electrical ground, thereby reducing electrical resistance and heat generated.

A construction machine is capable of reducing a decrease in work efficiency due to maintenance for capturing dust. The construction machine includes: an engine; a heat exchanger; a cooling fan that sucks air into an engine chamber to pass the air through the heat exchanger; an intake chamber independent of the engine chamber; an intake tube connected to the intake chamber; and a dust receiving part. The intake tube has a curved part, which has an outside inner wall surface allowing dust in the air to contact it. The dust receiving part is located downstream of the outside inner wall surface to be capable of receiving dust.

A control system of an off-road work vehicle for performing a work function includes a controller for controlling the work vehicle, a light control module for controlling a lighting system of the work vehicle, and a sensing device disposed in communication with the controller. The lighting system includes a array field light that is operably controllable to project a light emission. The sensing device signals a location to be illuminated by the array field light to the controller, and the light control module operably controls an output of the array field light to direct substantially its entire light emission at the location.

Provided is a speed reducer including: a first reduction unit disposed at an input stage of a multi-stage reduction unit that decelerates a rotational driving force of an electric motor from an input stage side toward an output stage side and transmits the decelerated rotational driving force to a rotational drive unit; a first ring gear meshed with first planetary gears provided in the first reduction unit; and a third reduction unit disposed at an output stage of the multi-stage reduction unit and having a first case. The first ring gear is provided in the first case of the third reduction unit.