GEAR SHIFTING MECHANISM WITH DOUBLE COUPLING Russian patent published in 2013 - IPC F16H3/38 F16H63/20 

FIELD: machine building.

SUBSTANCE: gear shifting mechanism (4) includes two drive shafts (5), transmission shaft (7), a set of pairs of gear wheels (8, 9), each of which mechanically attaches drive shaft (5) to transmission shaft (7). Mechanism (4) also includes a set of synchronisers (10), a set of forks (11) that actuate synchronisers (10), two pins (12) for actuating forks (11), one distributing shaft (13) for rotation about longitudinal axis (15) and movement in axial direction along longitudinal axis (15), one drive mechanism (14) of gears, which is connected to distributing shaft (13). Mechanism (4) includes two more sleeves (18) that support the corresponding pin (12) and are freely installed on distributing shaft (13) and have the possibility of being moved along longitudinal axis (15), and connection system has the possibility of alternating implementation of angular fixation of distributing shaft (13) relative to sleeves (18), retaining devices (23) are provided to support the sleeve in the same angular position with constant and specified retaining moment.

EFFECT: higher reliability of the device.

13 cl, 6 dwg