FOUR-STEP GEARBOX FOR BUS Russian patent published in 2017 - IPC F16H57/33 F16H3/44 F16H37/02 

FIELD: transportation.

SUBSTANCE: four-step bus gearbox contains three modules connected in series. Each module includes a planetary gearbox consisting of a drive shaft, on which a crown gear (CG) is movably mounted on splines, and a sun gear (SG) freely mounted on a driven shaft (DS) with a carrier, axes and satellites rigidly fixed thereon, and an automatic system (AS) of switching. The AS of switching includes a friction clutch, the leading discs of which are connected to the CG, and the driven discs - to the carrier, centrifugal weights and the AS for comtrolling the SG state.

EFFECT: simplifying the design, increasing the reliability and reducing the cost of the gearbox.

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