Abstract: An axle driving apparatus may include a first rotary shaft connected to an internal combustion engine; a second connected to an electric motor; a third rotary shaft connected to a driving shaft of a wheel; an interlocking unit interlocking the first, second, and third rotary shaft; and an input and output switchover unit. The interlocking unit and the input and output switchover unit are structured to switch the interlocking unit between a first mode in which only the power of the internal combustion engine is output from the third rotary shaft, a second mode in which only the power of the electric motor is output from the third rotary shaft, a third mode in which the power of the internal combustion engine and the power of the electric motor are combined and output from the third rotary shaft, and a fourth mode in which the power of the internal combustion engine is output from the second rotary shaft to the electric motor.

Abstract: A hydraulic system according to the present invention includes a rotational shaft, a hydraulic rotor supported by the rotational shaft so as to be incapable of relative rotation, an output adjuster varying a volume of the hydraulic rotor, a control shaft tilting the output adjuster, a drive motor operating the control shaft around the axis, a drive shaft disposed on a reference axis same as the axis of the control shaft and operably driven around the axis by the drive motor, a deceleration mechanism decelerating rotary power input from the drive shaft and outputs the decelerated rotary power toward the control shaft, and a housing accommodating the hydraulic rotor, the output adjuster, and the deceleration mechanism, wherein the deceleration mechanism has a hypocycloid-type deceleration mechanism disposed on the reference axis.

Abstract: A MTD unit according to a present disclosure includes a bearing member that has an inner ring, a plurality of rolling elements and an outer ring and is capable of bearing a radial load and a unidirectional axial load, a retainer that has a retaining part retaining the rolling elements such that the rolling elements are rotatable around their own axes and rotates around an axis of the inner ring in accordance with an orbital motion of the rolling elements around the inner ring, and a case that accommodates the bearing member and the retainer, wherein the case has a piston that is axially movable so as to push a movable body, which is either the inner ring or the outer ring, in a first axial direction, an oil chamber provided on an opposite side of the piston from the movable body, and an oil passage for guiding pressurized oil to the oil chamber.

Abstract: An axle driving apparatus may include a first rotary shaft connected to an internal combustion engine; a second connected to an electric motor; a third rotary shaft connected to a driving shaft of a wheel; an interlocking unit interlocking the first, second, and third rotary shaft; and an input and output switchover unit. The interlocking unit and the input and output switchover unit are structured to switch the interlocking unit between a first mode in which only the power of the internal combustion engine is output from the third rotary shaft, a second mode in which only the power of the electric motor is output from the third rotary shaft, a third mode in which the power of the internal combustion engine and the power of the electric motor are combined and output from the third rotary shaft, and a fourth mode in which the power of the internal combustion engine is output from the second rotary shaft to the electric motor.

Abstract: A hydraulic system according to the present invention includes a rotational shaft, a hydraulic rotor supported by the rotational shaft so as to be incapable of relative rotation, an output adjuster varying a volume of the hydraulic rotor, a control shaft tilting the output adjuster, a drive motor operating the control shaft around the axis, a drive shaft disposed on a reference axis same as the axis of the control shaft and operably driven around the axis by the drive motor, a deceleration mechanism decelerating rotary power input from the drive shaft and outputs the decelerated rotary power toward the control shaft, and a housing accommodating the hydraulic rotor, the output adjuster, and the deceleration mechanism, wherein the deceleration mechanism has a hypocycloid-type deceleration mechanism disposed on the reference axis.

Abstract: A MTD unit according to a present disclosure includes a bearing member that has an inner ring, a plurality of rolling elements and an outer ring and is capable of bearing a radial load and a unidirectional axial load, a retainer that has a retaining part retaining the rolling elements such that the rolling elements are rotatable around their own axes and rotates around an axis of the inner ring in accordance with an orbital motion of the rolling elements around the inner ring, and a case that accommodates the bearing member and the retainer, wherein the case has a piston that is axially movable so as to push a movable body, which is either the inner ring or the outer ring, in a first axial direction, an oil chamber provided on an opposite side of the piston from the movable body, and an oil passage for guiding pressurized oil to the oil chamber.

Abstract: A work vehicle includes a driving wheel motor for driving at least one driving wheel, a working implement-related motor for driving at least one working implement, and at least one controller. The at least one controller sets, upon satisfaction of a predetermined condition set in advance, a relationship between vehicle speed of the work vehicle and working implement-related target rotational speed of the working implement-related motor to a working travelling cooperative relationship according to which the working implement-related target rotational speed is increased according to an increase in the vehicle speed at least within a predetermined vehicle speed range of the work vehicle, and controls the working implement-related motor to implement a working travelling cooperative mode in which the working implement-related motor is driven at the working implement-related target rotational speed based on the working travelling cooperative relationship.

Abstract: An electric transaxle according to the invention comprises a transaxle casing, an electric motor, an axle, a gear mechanism, first and second fluid sumps, and first and second fluid introduction passages. The transaxle casing defines a gear chamber therein. The electric motor includes a motor casing attached to the transaxle casing. The axle is supported by the transaxle casing. The gear mechanism transmits power from the electric motor to the axle. Fluid of the first fluid sump raised by driving the gear mechanism is supplied to the second fluid sump. The first fluid introduction passage introduces the fluid raised from the first fluid sump to the second fluid sump when the axle is rotated in a forward traveling direction. The second fluid introduction passage introduces the fluid raised from the first fluid sump to the second fluid sump when the axle is rotated in a backward traveling direction.

Abstract: A work vehicle includes a driving wheel motor for driving at least one driving wheel, a working implement-related motor for driving at least one working implement, and at least one controller. The at least one controller sets, upon satisfaction of a predetermined condition set in advance, a relationship between vehicle speed of the work vehicle and working implement-related target rotational speed of the working implement-related motor to a working travelling cooperative relationship according to which the working implement-related target rotational speed is increased according to an increase in the vehicle speed at least within a predetermined vehicle speed range of the work vehicle, and controls the working implement-related motor to implement a working travelling cooperative mode in which the working implement-related motor is driven at the working implement-related target rotational speed based on the working travelling cooperative relationship.

Abstract: A riding-type ground working vehicle includes left and right wheels, a command value calculating section, a yaw rate detecting section that detects a yaw rate of the vehicle, a target yaw rate calculating section, a correction coefficient acquiring section, and a control section. The left and right wheels are independently driven to travel by two respective traction motors. The command value calculating section calculates target rotational speed command values for the two traction motors based on an acceleration instruction and a turn instruction input by a driver. The target yaw rate calculating section calculates a target yaw rate based on the acceleration instruction and the turn instruction. The correction coefficient acquiring section acquires two correction coefficients respectively relating to the two traction motors based on a deviation between the target yaw rate and a yaw rate detection value.

Abstract: An electric transaxle according to the invention comprises a transaxle casing, an electric motor, an axle, a gear mechanism, first and second fluid sumps, and first and second fluid introduction passages. The transaxle casing defines a gear chamber therein. The electric motor includes a motor casing attached to the transaxle casing. The axle is supported by the transaxle casing. The gear mechanism transmits power from the electric motor to the axle. Fluid of the first fluid sump raised by driving the gear mechanism is supplied to the second fluid sump. The first fluid introduction passage introduces the fluid raised from the first fluid sump to the second fluid sump when the axle is rotated in a forward traveling direction. The second fluid introduction passage introduces the fluid raised from the first fluid sump to the second fluid sump when the axle is rotated in a backward traveling direction.

Abstract: A riding-type ground working vehicle includes left and right wheels, a command value calculating section, a yaw rate detecting section that detects a yaw rate of the vehicle, a target yaw rate calculating section, a correction coefficient acquiring section, and a control section. The left and right wheels are independently driven to travel by two respective traction motors. The command value calculating section calculates target rotational speed command values for the two traction motors based on an acceleration instruction and a turn instruction input by a driver. The target yaw rate calculating section calculates a target yaw rate based on the acceleration instruction and the turn instruction. The correction coefficient acquiring section acquires two correction coefficients respectively relating to the two traction motors based on a deviation between the target yaw rate and a yaw rate detection value.