VEHICLE POWER TAKEOFF SHAFT DRIVE Russian patent published in 1997 - IPC

FIELD: transport engineering; power takeoff shaft drives of tractors and similar vehicles. SUBSTANCE: vehicle power takeoff shaft drive has driving shaft which is input shaft of gearbox and driven shaft, both mechanically coupled by gears. Gearbox gears serve as gears of drive. Drive driven shaft is installed coaxially with one of gearbox driven shafts and is mechanically coupled with gearbox driven shaft adjacent to gearbox input shaft. One of gears of gearbox driven shaft adjacent to input shaft, which is in meshing with input shaft gear, is installed for engagement with shaft and is provided with at least one additional torque transmitting member. Mechanical coupling of drive driven shaft and gearbox driven shaft can be made in the form of change-over device including a hub, rigidly fitted on gearbox driven shaft adjacent to input shaft and furnished with at least one torque transmitting member, at least one additional torque transmitting member of above indicated freely fitted gear of gearbox driven shaft, and sleeve furnished with at least one torque transmitting member and installed coaxially with above indicated freely fitted gear of gearbox driven shaft for axial travel and engagement with above indicated hub or above indicated freely fitted gear of gearbox driven shaft. Mechanical coupling of drive driven shaft with gearbox driven shaft can also be made in the form of torque transmitting device including at least one additional torque transmitting member of above indicated freely fitted gear of gearbox driven shaft, at least one additional torque transmitting member coupled with drive driven shaft and sleeve constantly engaged with above indicated freely fitted gear of gearbox driven shaft and with torque transmitting member coupled with drive driven shaft. Power takeoff shaft drive can be furnished with additional driven shaft installed coaxially with indicated shaft and coupled with the latter. Both driven shafts of drive are engaged with one and the same driven shaft of gearbox. EFFECT: improved reliability of operation. 7 cl, 6 dwg