Abstract: To achieve a size reduction while making it possible to mold a case housing an axle and a gear mechanism by casting in an electric-vehicle power transmission unit that drives right and left wheels with a single electric motor. [Solution] A power transmission unit 41 includes a motor case 50 that is provided on the same side as a second axle 19 with respect to a center between a first axle 18 and the second axle 19, separated to right and left, in a right-left direction and that houses the electric motor 70, a first axle case 43 housing a reduction gear mechanism 78, a differential gear mechanism 118, and the first axle 18, and a second axle case 130 that is fixed to the first axle case 43 in a separable manner and houses the second axle 19.

Abstract: [Problem] A power transmission unit that improves quietness of a gear mechanism and prevents a size of the unit from increasing when a brake rotor is installed around an input shaft of the gear mechanism. [Solution] The power transmission unit includes an electric driving motor with a motor shaft, a gear mechanism, and an output shaft, which are accommodated in a transmission housing, wherein the power of the motor shaft is transmitted to the output shaft via the gear mechanism. The gear mechanism has a gear shaft rotatably supported on the transmission housing and a first helical gear provided on the gear shaft. The power transmission unit further includes a connecting member provided with a tubular portion fitted to the motor shaft and the gear shaft so as to allow the motor shaft and the gear shaft to synchronously rotate. The connecting member is integrally provided with a brake rotor on the outer periphery thereof.

Abstract: A work vehicle includes a main body frame and left and right axle drive devices that drive left and right rear wheels. The axle drive devices include left and right electric motors that are housed and fixed in a motor housing that is fixed to the main body frame and left and right gear mechanisms that are housed in gear housings that are fixed to left and right ends of the motor housing and are connected to the respective electric motors to transmit power. A motor shaft of each of the electric motors rotates the corresponding wheel via the corresponding axle-integrated rotating member including the axle. The motor shaft is also arranged to overlap, along the axial direction, with an inner portion of a circumscribing circle of a maximum outer diameter portion of the corresponding axle-integrated rotating member.

Abstract: A power transmission unit includes a motor; and a transmission case to enclose an input shaft, an output shaft, and a gear mechanism that transmits driving power between the input shaft and the output shaft. A motor case attached to the transmission case on a side opposite the gear mechanism of the transmission case has a cylindrical shape whose cross section is constant throughout a direction orthogonal to an axial direction of the motor case, and the motor is placed inside the motor case.

Abstract: An axle drive apparatus of the present invention includes an adapter unit that has an adapter case connectable to an axle drive case while supporting a first motor, an adapter input member connected to an output shaft of the first motor by connection of the first motor to the adapter case, an adapter output member that is connected to an axle drive input member of the axle drive apparatus by connection of the adapter case to an axle drive case, and an adapter power transmission mechanism that operatively transmits the rotational power of the adapter input member to the adapter output member. The axle drive apparatus is connectable to a vehicle frame through an axle drive case side frame connecting part and an adapter case side frame connecting part respectively provided at the axle drive case and the adapter case.

Abstract: An axle drive apparatus of the present invention includes an adapter unit that has an adapter case connectable to an axle drive case while supporting a first motor, an adapter input member connected to an output shaft of the first motor by connection of the first motor to the adapter case, an adapter output member that is connected to an axle drive input member of the axle drive apparatus by connection of the adapter case to an axle drive case, and an adapter power transmission mechanism that operatively transmits the rotational power of the adapter input member to the adapter output member. The axle drive apparatus is connectable to a vehicle frame through an axle drive case side frame connecting part and an adapter case side frame connecting part respectively provided at the axle drive case and the adapter case.

Abstract: The purpose of the present invention is to provide a vane pump that is able to prevent decrease of power transmission efficiency when the vane pump is used in combination with a device such as a transmission device, for example. Therefore, this vane pump (10, 20, 50, 60, 70, 80, 90) has a hollow shaft (1, 21, 51, 61, 71, 81, 91), the hollow shaft (1, 21, 51, 61, 71, 81, 91) is configured such that a hollow portion thereof allows a rotation driving shaft (which is, for example, an input shaft 103 of a transmission device as illustrated in FIG. 1, and, which also includes an input shaft which is inserted directly into the transmission device from a driving source 102 without having a coupling interposed therebetween) of the driving source (102) to be inserted therethrough, and the hollow shaft (1, 21, 51, 61, 71, 81, 91) and the rotation driving shaft (103) are coupled by means of a mechanism (spline, key and key groove, etc.) for transmitting a torque but transmitting no thrust.

Abstract: A power transmission assembly for a vehicle with prime mover, prime mover output shaft, and right and left traveling devices, comprises a power distribution unit that receives rotary power from the prime mover output shaft and distributes it between right and left transmission units, which each include: a center section with a closed fluid circuit, a lateral first portion, and a second portion perpendicular thereto; a hydraulic pump mounted on the first portion such that a pump shaft is parallel to the prime mover output shaft; a hydraulic motor on the second portion fluidly connected to the hydraulic pump via the closed fluid circuit, having a lateral motor shaft; and a speed reduction device on a distal side of the hydraulic motor that transmits power from the hydraulic motor to the right or left traveling device.

Abstract: A transmission for a working vehicle equipped with an engine having a horizontal engine output shaft, pair of transaxles for driving right and left drive wheels at variable speeds, and working device comprises a horizontal input shaft, output shaft, first gear train, horizontal PTO shaft, second gear train, PTO clutch and casing. An axial end of the input shaft connects to a flywheel of the engine. The output shaft drivingly connects to the transaxles. The first gear train transmits power from the input shaft to the output shaft. The PTO shaft extends parallel to the input shaft, and is provided with a universal joint connected to the working device. The second gear train transmits power from the input shaft to the PTO shaft via the PTO clutch. The casing supports the input and output shafts and incorporates the first and second gear trains and the PTO clutch.

Abstract: A power transmission assembly for a vehicle with prime mover, prime mover output shaft, and right and left traveling devices, comprises a power distribution unit that receives rotary power from the prime mover output shaft and distributes it between right and left transmission units, which each include: a center section with a closed fluid circuit, a lateral first portion, and a second portion perpendicular thereto; a hydraulic pump mounted on the first portion such that a pump shaft is parallel to the prime mover output shaft; a hydraulic motor on the second portion fluidly connected to the hydraulic pump via the closed fluid circuit, having a lateral motor shaft; and a speed reduction device on a distal side of the hydraulic motor that transmits power from the hydraulic motor to the right or left traveling device.

Abstract: A transmission for a working vehicle equipped with an engine having a horizontal engine output shaft, pair of transaxles for driving right and left drive wheels at variable speeds, and working device comprises a horizontal input shaft, output shaft, first gear train, horizontal PTO shaft, second gear train, PTO clutch and casing. An axial end of the input shaft connects to a flywheel of the engine. The output shaft drivingly connects to the transaxles. The first gear train transmits power from the input shaft to the output shaft. The PTO shaft extends parallel to the input shaft, and is provided with a universal joint connected to the working device. The second gear train transmits power from the input shaft to the PTO shaft via the PTO clutch. The casing supports the input and output shafts and incorporates the first and second gear trains and the PTO clutch.

Abstract: A transaxle for auxiliary wheels of a vehicle having a main drive wheel and left and right auxiliary drive wheels, comprises: a gear to which a rotary force for driving the main drive wheel is distributed; a pair of left and right axles drivingly connected to the respective left and right auxiliary drive wheels; a pair of clutches, wherein one of the clutches is interposed between the gear and the left axle, and the other clutch is interposed between the gear and the right axle; judging means for judging whether or not the main drive wheel slips; and a shift mechanism for engaging and disengaging the pair of clutches based on the judgment of the judging means. The judging means comprises a two-way clutch interposed between the gear and the pair of axles, which is engaged when rotary speed of the gear exceeds rotary speed of at least one of the axles.

Abstract: A working vehicle comprises: a power source having an output shaft; axles; a cargo deck; and a transmission apparatus for driving axles disposed below the cargo deck. The transmission apparatus includes an input shaft drivingly connected to the output shaft of the power source, a hydro-mechanical stepless transmission driven by the input shaft, and a differential gear assembly differentially connecting the axles to each other. The hydro-mechanical stepless transmission includes a planetary gear assembly and a hydrostatic stepless transmission drivingly connected to the planetary gear assembly. The differential gear assembly is drivingly connected to the hydro-mechanical stepless transmission.

Abstract: A working vehicle comprises: a power source having an output shaft; axles; a cargo deck; and a transmission apparatus for driving axles disposed below the cargo deck. The transmission apparatus includes an input shaft drivingly connected to the output shaft of the power source, a hydro-mechanical stepless transmission driven by the input shaft, and a differential gear assembly differentially connecting the axles to each other. The hydro-mechanical stepless transmission includes a planetary gear assembly and a hydrostatic stepless transmission drivingly connected to the planetary gear assembly. The differential gear assembly is drivingly connected to the hydro-mechanical stepless transmission.

Abstract: A vehicle power transmission system comprises: a prime mover mounted on a vehicle body frame; a first axle and a first transaxle for driving the first axle disposed at one of front and rear portions of a vehicle, the first transaxle having a first input part projecting outward therefrom, and the first transaxle having a power take-off shaft projecting outward therefrom opposite to the first input part; a speed-changing transmission drivingly interposed between the prime mover and the first input part; a second axle and a second transaxle for driving the second axle disposed at the other rear or front portion of the vehicle, the second axle having a second input part; and a power take-off train extended from a leading part to an ending part. The prime mover is disposed between the first transaxle and the second transaxle in a fore-and-aft direction of the vehicle.

Abstract: A working vehicle comprises: a power source having an output shaft; axles; a cargo deck; and a transmission apparatus for driving axles disposed below the cargo deck. The transmission apparatus includes an input shaft drivingly connected to the output shaft of the power source, a hydro-mechanical stepless transmission driven by the input shaft, and a differential gear assembly differentially connecting the axles to each other. The hydro-mechanical stepless transmission includes a planetary gear assembly and a hydrostatic stepless transmission drivingly connected to the planetary gear assembly. The differential gear assembly is drivingly connected to the hydro-mechanical stepless transmission.

Abstract: A gear shifting mechanism of an axle drive system comprises: a shaft drivingly connected to an axle; a first clutch gear relatively rotatably provided on the shaft, the first clutch gear having first clutch teeth; a second clutch gear relatively rotatably provided on the shaft, the second clutch gear having second clutch teeth; a spline hub fixed on the shaft between the first and second clutch gears; a gear shifting slider axially slidably and not relatively rotatably fitted on the spline hub; slider-shift means integrally movably interlocking with the gear shifting slider; operation means operatively interposed between the slider-shift means and a gear shifting manipulator; and elastic means interposed between the slider-shift means and the operation means. End surfaces of the first, second and third clutch teeth facing one another are flat.

Abstract: A multi-wheel-drive vehicle has at least six wheels, a transmission with a first brake, and a transaxle device for the front drive wheels. The transaxle device includes a drive axle, an input shaft rectangular to the drive axle for receiving power from the transmission, a drive train connecting the drive axle to the input shaft, a second brake, and a clutch device in the input shaft. The drive axle may be a pair of drive axles connected by a differential unit. The clutch device can selectively isolate the drive axle from the rotation of the input device. Further, the clutch device is engaged when the first brake is applied. Additionally, the first and second brakes may be connected such that their operation may be synchronized.

Abstract: A multi-wheel-drive vehicle has at least six wheels, a transmission with a first brake, and a transaxle device for the front drive wheels. The transaxle device includes a drive axle, an input shaft rectangular to the drive axle for receiving power from the transmission, a drive train connecting the drive axle to the input shaft, a second brake, and a clutch device in the input shaft. The drive axle may be a pair of drive axles connected by a differential unit. The clutch device can selectively isolate the drive axle from the rotation of the input device. Further, the clutch device is engaged when the first brake is applied. Additionally, the first and second brakes may be connected such that their operation may be synchronized.

Abstract: A multi-wheel-drive vehicle has at least six wheels, a transmission with a first brake, and a transaxle device for the front drive wheels. The transaxle device includes a drive axle, an input shaft rectangular to the drive axle for receiving power from the transmission, a drive train connecting the drive axle to the input shaft, a second brake, and a clutch device in the input shaft. The drive axle may be a pair of drive axles connected by a differential unit. The clutch device can selectively isolate the drive axle from the rotation of the input device. Further, the clutch device is engaged when the first brake is applied. Additionally, the first and second brakes may be connected such that their operation may be synchronized.