TWO-SPEED DRIVE MECHANISM OF REAR POWER TAKE-OFF SHAFT OF GENERAL-PURPOSE ROW CROP TRACTOR Russian patent published in 1994 - IPC

FIELD: agricultural engineering. SUBSTANCE: mechanism comprises engine, two energy-using units driven via combined power take-off shaft by selective connection to planetary reduction unit disposed in rear axle housing, to independent power take-off shaft through two-speed reduction unit installed in clutch housing, to synchronous power take-off shaft via gearbox which is linked kinematically with driving wheels via main drive, differential and final drive installed in rear axle housing. The general-purpose row crop tractor is equipped with two-speed planetary reduction unit whose input member is kinematically linked by gear wheel with two-speed reduction unit installed in clutch housing, the output member of said reduction unit is linked via friction coupling and propeller shaft drive with the lower extension of power take-off shaft while the third member has a gear coupling for selective shifting of stages, and is connected to the reduction unit housing or to the input member. The lower extension of the power take-off shaft is disposed below the axis of lower longitudinal rods. EFFECT: wider functional capabilities and improved quality of tractor-implement units. 2 cl, 1 dwg