HYDROMECHANICAL TRANSMISSION Russian patent published in 1997 - IPC

FIELD: mechanical engineering. SUBSTANCE: transmission consists of positive-displacement and mechanical portions. The positive-displacement transmission has two hydraulic machines one of which is controllable and connected with the driving shaft. The mechanical gear has differential made up as planet mechanisms reactive link of one of which has a brake. The shifting device is made up as three-link planet gear the reactive link of which is provided with a brake and inlet link connected with the driving shaft. The output link is connected with one of the links of the differential. When the brake of the differential is applied power is transmitted from the driving shaft through the controllable hydraulic machine, the other hydraulic machine of the positive-displacement gear, planet gear of the differential to the driven shaft. EFFECT: improved design. 1 dwg