CRAWLER VEHICLE TRANSMISSION Russian patent published in 2005 - IPC

FIELD: transport engineering; crawler vehicle transmissions.

SUBSTANCE: according to invention, proposed transmission of crawler vehicle contains three-member summing planetary final drives, whose epicyclic gear wheels are interconnected by shaft and coupled with engine through step gearbox. Carriers are connected with drive wheels of crawler vehicle being furnished with brakes for coupling with transmission housing. Sun gears are engaged through idler gear by means of gear trains and intermediate shaft connected with engine through controllable reversible hydrostatic transmission. Transmission is furnished additionally with second intermediate shaft connected at one side through clutch members with first intermediate shaft and at other side by gear trains with sun gear provided with additional gear rim for engagement with said idler gear.

EFFECT: improved traction and speed characteristics of crawler vehicle owing to use of two power flows transmitted from engine to summing planetary final drives and further on to drive wheels at straight-ahead running.

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