Load-switchable multi-step reduction gear for fragment gear box used in agricultural vehicle, has planetary gear set whose ring gear portion is connected with driven shaft through clutch and spur gear stage portion

摘要

The multi-step reduction gear has a jackshaft that is arranged parallel to a longitudinal axis of a primary planetary gear set (P1) and a secondary planetary gear set (P2). A drive shaft (1) is connected with a bar region of the secondary planetary gear set. A bar portion of the primary planetary gear set is connected with a driven shaft (2) through a clutch (K4) and a spur gear stage portion (S1). A ring gear portion of the secondary planetary gear set is connected with the driven shaft through a clutch (K5) and a spur gear stage portion (S2).