DOUBLE-RANGE FINAL DRIVE Russian patent published in 2011 - IPC B60K17/16 

FIELD: transport.

SUBSTANCE: invention relates to wheeled vehicles. Proposed final drive comprises reduction gear case 1 and cover 2 with crown gear wheel 3 engaged via threaded elements 4. Case element axial zone has rolling bearing seats. Drive shaft runs in said bearings. Said drive shaft is made up of input shaft 5 and output shaft 6 whereon flange 9 is splined. Sun gear 12 is mounted at input shaft center while forward and underdrive gear throw-in clutch 13 with synchro unit 14 is fitted nearby output shaft end. Internal end of output shaft 6 supports three-pin pinion frame 18, its pins supporting pinions 18 running in bearings 17. Underdrive gear throw-in clutch 19 with synchro unit 20 is fitted at output shaft center.

EFFECT: longer life of planetary reduction gear, higher traction on drive wheels.

4 cl, 2 dwg