METHOD OF AND DEVICE FOR SHIFTING GEARS IN MULTIPLE-SPEED GEARBOX Russian patent published in 2006 - IPC B60K17/08 F16H3/02 

FIELD: transport engineering.

SUBSTANCE: invention relates to conventional gearboxes of transport and traction vehicles. Each speed in multiple-shaped gearbox contains drive and driven shafts with fitted-on gears and intermediate gears freely fitted on curvilinear axle for rotation and equipped with stop. Curvilinear axle is secured in gearbox for turning around axis of drive or driven shaft. Intermediate gears are installed on axle with angular shift, being in constant meshing either with gears of drive shaft or gears of driven shaft. At gear-shifting, common axle of intermediate gears of shifted-in and shifted-out speeds is unlocked and rotated around axis of gearbox shaft with gear of which intermediate gears are in constant meshing. Intermediate gear of shifted-out speed is brought out of meshing with gear of other shaft, and gear of shifted-in speed is brought synchronously into meshing with gear of other shaft for complete engagement of corresponding speed, after which axle of intermediate gears is locked. To select direction of change-over, engine of vehicle is changed over for traction or braking conditions.

EFFECT: provision of gear-shifting practically without breaking of power flow and without synchronization of gear speeds.

3 cl, 4 dwg