The present invention relates to a transmission apparatus of an agricultural working automobile, the transmission apparatus comprising: a first gear-shifting part for performing gear-shifting to adjust the speed of an agricultural working automobile; and a second gear-shifting part for performing gear-shifting to adjust the speed of the agricultural working automobile, wherein the second gear-shifting part comprises a sub-gear-shifting drive mechanism for performing gear-shifting, using one operation selected from among an operation transferred through a first power transmission path from the first gear-shifting part and an operation transferred through a second power transmission path from the first gear-shifting part.

Regarding a travel power transmission apparatus for a tractor, in which a creep speed changing apparatus is housed in a transmission case, the present invention increases a deceleration ratio throughout the creep speed change while suppressing an increase in the size of the transmission case. A creep speed changing apparatus includes: a first power transmission gear that is provided on an output shaft gear of a gear transmission; a first deceleration gear that is supported by a relay shaft so as to be rotatable relative to the relay shaft, in a state of meshing with the first power transmission gear; a second power transmission gear that is provided on the first deceleration gear; a second deceleration gear that is supported by an output shaft of the gear transmission so as to be rotatable relative to the output shaft, in a state of meshing with the second power transmission gear; a third power transmission gear that is provided on the second deceleration gear; a third deceleration gear that is supported by the relay shaft so as not to be rotatable relative to the relay shaft, in a state of meshing with the third power transmission gear; and a pair of deceleration gears that are provided so as to span the relay shaft and the output shaft, and decelerate power from the relay shaft and transmit the resulting power to the output shaft.

Regarding a travel power transmission apparatus for a tractor, in which a creep speed changing apparatus is housed in a transmission case, the present invention increases a deceleration ratio throughout the creep speed change while suppressing an increase in the size of the transmission case. A creep speed changing apparatus includes: a first power transmission gear that is provided on an output shaft gear of a gear transmission; a first deceleration gear that is supported by a relay shaft so as to be rotatable relative to the relay shaft, in a state of meshing with the first power transmission gear; a second power transmission gear that is provided on the first deceleration gear; a second deceleration gear that is supported by an output shaft of the gear transmission so as to be rotatable relative to the output shaft, in a state of meshing with the second power transmission gear; a third power transmission gear that is provided on the second deceleration gear; a third deceleration gear that is supported by the relay shaft so as not to be rotatable relative to the relay shaft, in a state of meshing with the third power transmission gear; and a pair of deceleration gears that are provided so as to span the relay shaft and the output shaft, and decelerate power from the relay shaft and transmit the resulting power to the output shaft.

A transmission assembly includes a transmission assembly housing; a continuously variable power source (CVP) configured to generate CVP power; an input arrangement selectively coupled to receive the engine power from the input shaft and the CVP power from the CVP; a variator configured to receive the engine power and the CVP power through the input arrangement; and an output arrangement including an output shaft defining an output axis and at least one output component connected to the output shaft. A transmission gear arrangement is configured to provide a selective gear reduction for transmission of selected output power of the CVP power or combined power of the CVP power and the engine power. The transmission gear arrangement includes a plurality of range clutches supported about the output shaft and configured to be selectively engaged to transfer the selected output power from the variator shaft to the output shaft.

A transmission assembly includes a transmission assembly housing; a continuously variable power source (CVP) configured to generate CVP power; an input arrangement selectively coupled to receive the engine power from the input shaft and the CVP power from the CVP; a variator configured to receive the engine power and the CVP power through the input arrangement; and an output arrangement including an output shaft defining an output axis and at least one output component connected to the output shaft. A transmission gear arrangement is configured to provide a selective gear reduction for transmission of selected output power of the CVP power or combined power of the CVP power and the engine power. The transmission gear arrangement includes a plurality of range clutches supported about the output shaft and configured to be selectively engaged to transfer the selected output power from the variator shaft to the output shaft.

The present disclosure relates to a transmission apparatus of an agricultural working automobile, the transmission apparatus comprising: a first gear-shifting part for performing gear-shifting to adjust the speed of an agricultural working automobile; and a second gear-shifting part for performing gear-shifting to adjust the speed of the agricultural working automobile, wherein the second gear-shifting part comprises a sub-gear-shifting drive mechanism for performing gear-shifting, using one operation selected from among an operation transferred through a first power transmission path from the first gear-shifting part and an operation transferred through a second power transmission path from the first gear-shifting part

A manual transmission includes a coaxially arranged input shaft and output shaft, a first intermediate shaft and parallel second intermediate shaft, spaced from the input shaft, a drive side gear pair with a drive gear rotationally fixed on the input shaft and an intermediate gear rotationally fixed on the first intermediate shaft, and an output side gear pair with a second intermediate gear rotationally fixed on the second intermediate shaft and an output gear rotationally fixed on the output shaft, wherein, drive torque is transferred from the input shaft to the output shaft over the drive side gear pair, while no drive torque is transferred over the output side gear pair and, with at least three other switchable gears, drive torque is transmitted from the input shaft to the output shaft over the output side gear pair, while no drive torque is transmitted over the drive side gear pair.

An epicyclic gear train includes a housing, an input shaft, a first sun gear fixedly connected to the input shaft, an output shaft, a second sun gear fixedly connected to the output shaft, a planetary gear carrier arranged to be movable with respect to the first and second sun gears, and first and second planetary gears arranged to move on the planetary gear carrier. The planetary gears are fixedly connected to one another and disposed in engagement with the first and second sun gears, The epicyclic gear train further includes a first clutch device is disposed between the planetary gear carrier and the first sun gear, and a second clutch device is disposed between the housing and the planetary gear carrier. The first and second clutch devices block a relative movement between the planetary gear carrier and the first sun gear or between the planetary gear carrier and the housing.

A transmission assembly including a torque input shaft and a torque output shaft and input idler gears, input fixed gears and shift elements, each of which is associated with an input idler gear, are arranged on the torque input shaft, and output idler gears, output fixed gears and shift elements, each of which are associated with an output idler gear, are arranged on the torque output shaft, with the result that a plurality of different torque transmission paths from the torque input shaft to the torque output shaft may be implemented. The transmission arrangement has an additional torque transmission path that may be implemented. The additional torque transmission path runs from the torque input shaft through a double gear to the torque output shaft. The transmission assembly can be included in a corresponding overall transmission which can be installed in an agricultural machine.

The invention relates to a powertrain for a fully electric vehicle comprising an electric machine (1), a driven wheel (2) and a gearing (3) that is arranged between the electric machine (1) and the driven wheel (2) and that provides a driving connection there between, which gearing (3) includes at least a first speed reduction stage (31) providing a fixed first speed ratio, a variator unit (40) providing a variable speed ratio and a second speed reduction stage (32) providing a fixed second speed ratio between an input gear wheel (35) and an output gear wheel (36) thereof, whereof the input gear wheel (35) rotates as one with the output shaft of variator unit (40). According to the invention, a maximum overall speed ratio provided by the gearing (3) between the electric machine (1) and the driven wheel (2) amounts to at least 20:1.