Work vehicle

A work vehicle comprising:

• a hydrostatic stepless speed changer device configured to speed-change driving power of an engine steplessly;
• a plurality of planetary gear speed changer devices configured to speed-change the driving power speed-changed by the stepless speed changer device;
• a plurality of clutch mechanisms corresponding to the plurality of planetary gear speed changer devices in order to take off the driving powers from these plurality of planetary gear speed changer devices individually;
• a traveling speed changing section for speed-changing and transmitting the driving powers transmitted from the plurality of clutch mechanisms to a traveling mechanism having at least one wheel;
• the plurality of planetary gear speed changer devices being arranged in juxtaposition relationship with each other;
• each of the plurality of planetary gear speed changer devices having a respective output shaft, each of the respective output shafts having a respective axis of rotation, wherein each of the respective axes of rotation are offset from each other in a vehicle width direction;
• and
• the plurality of planetary gear speed changer devices, the plurality of clutch mechanisms, and the traveling speed changing section being accommodated in a transmission case, wherein:
• the stepless speed changer device includes a variable displacement type hydraulic pump driven by the engine, a hydraulic motor rotated by work oil fed from the hydraulic pump, and a port block defining a hydraulic circuit formed between the hydraulic pump and the hydraulic motor;
• and
• the hydraulic pump and the hydraulic motor are disposed on the side of a rear face of the port block.

A work vehicle comprising:

• a first clutch mechanism of a wet type configured to engage/disengage transmission of a traveling driving power transmitted from a first shaft to a traveling mechanism having at least one wheel;
• a second clutch mechanism of a wet type configured to engage/disengage transmission of a traveling driving power transmitted from a second shaft to the traveling mechanism;
• an intermediate rotational member rotatable relative to the first shaft due to a drag torque associated with rotation of the first shaft, including while the first clutch mechanism is under a transmission disengaging state;
• and
• a coupling portion configured to transmit a rotational power of the intermediate rotational member to an output portion of the second clutch mechanism;
• a first planetary gear speed changer device for speed-changing traveling driving power and transmitting the resultant power to the first shaft;
• a second planetary gear speed changer device for speed-changing traveling driving power and transmitting the resultant power to the second shaft;
• the first clutch mechanism being configured to transmit, under its transmission engaging state, the driving power of the first shaft to the traveling mechanism as a forward traveling driving power;
• the second clutch mechanism including a forward traveling clutch section configured to transmit, under its transmission engaging state, the driving power of the second shaft to the traveling mechanism as a forward traveling driving power and a reverse traveling clutch section configured to transmit, under its transmission engaging state, the driving power of the second shaft to the traveling mechanism as a reverse traveling driving power to the traveling mechanism;
• and
• the second clutch mechanism further including a reverse traveling output gear configured to output the reverse traveling driving power from the reverse traveling clutch section, so that with meshing of the reverse traveling output gear with a reverse traveling transmission gear, the reverse traveling driving power is transmitted to the traveling mechanism.