MULTIRANGE THREE-LINE STEPLESS TRANSMISSION ON BASIS OF TWO DIFFERENTIAL GEARS Russian patent published in 2015 - IPC F16H37/08 F16H15/50 F16H57/33 

FIELD: engines and pumps.

SUBSTANCE: invention relates to stepless mechanical transmission. The multirange three-line stepless transmission comprises a housing (8), an input shaft (1), an output shaft (10), a continuously variable linkage link (5), a differential block (4) and a multirange coordinating transmission (9). The differential block (4) consists of one four-link planetary mechanism and one three- link planetary mechanism. Two links of the four- link planetary mechanism are continuously in pairs connected to two links of the three-unit planetary mechanism, the input shaft (1) is connected with any one input link of the differential block (4), the multirange coordinating transmission (9) is connected to any two other output links (2, 3) of the differential block (4) and to the output shaft (10). The continuously variable linkage (5) is connected to the housing (8) and two links of the differential block (4), free from connection with an input shaft (1) and the multirange coordinating transmission (9). The multirange coordinating transmission (9) is also connected to the housing (8) and contains operating elements connecting output links (2, 3) of the differential block (4) to the output shaft (10) with different gearing ratios, and the gearing ratio from one output link (2) of the differential block (4) to another output link (3) of the differential block (4) at stopped input shaft (1) has a negative sign.

EFFECT: device design simplification is achieved.

25 cl, 36 dwg