To obtain a rotational speed difference between right/left running drive wheels in proportion to a turning radius at turning time simultaneously with driving a plurality of the running drive wheels, so as to improve running performance on a bad road and the weak ground, by arranging a plurality of sets of pair of the right/ left running drive wheels in a longitudinal direction, and connecting a drive shaft of the running drive wheel positioned in the right/left respective same side rotatably in the same direction through a power transmitting mechanism.
This running vehicle has a means connecting a hydraulic pump motor for driving running, hydraulic pump motor for steering, and speed adjusting member of both the pump motors, to a speed adjustment operating implement and a steering operating implement of this machine, differential device arranged between right/left drive axles 40R, 40L, means transmitting an output of the first hydrostatic pump motor to the differential device and a means transmitting an output of the second hydrostatic pump motor onto the right/left both side drive axles with drive force in a reverse direction to each other. A plurality of sets of pair of right/left running drive wheels are arranged in a longitudinal direction, and a drive shaft of the running drive wheel positioned in the right/left respective same side is connected rotatably in an equal direction through a power transmitting mechanism.
IRIKURA KOJI
SHIMIZU HIROAKI
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