公开(公告)号：EP2923118A4

公开(公告)日：2016-07-20

申请号：EP12888940

申请日：2012-11-20

申请人： VOLVO CONSTR EQUIP AB

发明人： STRANDBERG JONNY ,  STÅLBERG DANIEL ,  BRATTBERG BJÖRN

IPC分类号： F16H37/04 ,  F16H3/00 ,  F16H57/04 ,  F16H61/00 ,  F16H61/70

CPC分类号： F16H61/70 ,  B60Y2300/18025 ,  F16H3/006 ,  F16H37/046 ,  F16H57/0412 ,  F16H57/0413 ,  F16H57/0473 ,  F16H57/0484 ,  F16H2061/0037 ,  F16H2312/02

摘要： A gear box for a working machine is arranged to be positioned in a first set of speed-changing gears and a second set of speed-changing gears. The gear box includes a gear box housing, an input shaft configured to receive torque, and an output shaft for supplying torque out, from the gear box, wherein the output shaft is connected to a planetary gear set of the gear box, a friction disc clutch arrangement which is arranged between a ring gear of the planetary gear set and the gear box housing for enabling connection of the ring gear to the gear box housing, and a control unit configured to controllably alternate the friction disc clutch arrangement between: an engaged state and an at least partially engaged state when the gear box is positioned in the first set of speed-changing gears, and between a disengaged state and an at least partially engaged state when the gear box is positioned in the second set of speed-changing gears. A corresponding method for controlling a gear box is also provided.