MULTI-SPEED GEARBOX Russian patent published in 2013 - IPC F16H3/66 

FIELD: machine building.

SUBSTANCE: gear box with nine forward gears and one backward gear includes four planetary gear sets (P1, P2, P3, P4), eight rotating shafts (1, 2, 3, 4, 5, 6, 7, 8) and six switching elements (03, 05, 07, 13, 16, 18). The first and the second planetary gear set (P1, P2) form switchable front dividing device, and the third and the forth planetary gear set (P3, P4) form the main gear. The carriers of the first and the second planetary gear sets (P1, P2) are interconnected via the shaft (4) that is connected to the element of main gear. The crown gear of the first planetary gear set (P1) is connected to the sun gear of the second planetary gear set (P2) through the shaft (8) that is made with the possibility of detachable connection with the primary shaft (1) through the coupling (18). The sun gear of the first planetary gear set (P1) via shaft (3) is made with the possibility of joining the casing (G) of the gear box through the brake (03) and is made with the possibility of detachable connection with the primary shaft (1) through the coupling (13). The crown gear of the second planetary gear set (P2) via shaft (5) is made with the possibility of joining the casing (G) of the gear box through the brake (05). Note that the shaft (7) is continuously connected to one element of main gear and is capable of joining the casing (G) of the gear box through the brake (07). The shaft (6) is continuously connected to other element of main gear and is capable of detachable connection with the primary shaft through the coupling (16). The secondary shaft (2) is continuously connected to one other element of main gear.

EFFECT: simplification of gear box structure.

14 cl, 8 dwg