TWO-MODE SUPER VARIABLE SPEED CASE (ITS VERSIONS) Russian patent published in 2009 - IPC F16H15/50 

FIELD: machine building.

SUBSTANCE: invention refers to machine building and can be implemented, for example in transport machine building as continuously variable transmission. The two-mode super variable speed case consists of case (1), base step-less transmission (2), and control mechanism (11) including matching planetary (12) and differential (13) gears; it also consists of output shaft of drive (27) designed to alternate kinematic connection with kinematic links of the control mechanism. Matching planetary gear (12) can be kinematically connected either with carrier (23) or with external central wheel (21) of differential gear (13). Internal central wheel (20) of differential gear (13) can be connected with output kinematic link (9) of base step-less transmission (2). External central wheel (15) of matching planetary gear (12) is connected with input kinematic link (9) of base step-less transmission (2). Internal central wheel (15) of matching planetary gear (12) is connected with fixed case (1). Output shaft of drive (27) can be connected either with external central wheel (21) or with carrier (23) of differential gear (13). The second version differs from the first one like follows: output kinematic link (9) of base step-less transmission (2) is connected to the external central wheel (21) of differential gear (13), while internal central wheel (20) contains singular tooth ring (22). The third version of the drive differs from the first two like follows: output kinematic link (9) of base step-less transmission (2) can be telescopic jointed to fixture (3 8) by means of splines (40); the fixture bears tooth ring (41) of internal mesh.

EFFECT: invention transmits torque with reduced revolution frequency from input kinematic link of step-less transmission to output link of drive which simplifies drive, increases its efficiency and eliminates high intermediate frequencies of control mechanism rotation.

9 cl, 6 dwg