FIELD: transport.
SUBSTANCE: invention relates to crawler tractor hydrostatic transmission and serves to drive and control said tractor and its mounted implements. Proposed transmission comprises two controlled reversible axial-piston pumps to make hydraulic circuit with appropriate hydromotor coupled with appropriate final drive and equipped with brake, and third hydraulic pump to make via pressure control valve the hydraulic circuit with hydraulic cylinders of mounted implements. Hydraulic circuits of said three hydraulic cylinders are independent. Hydraulic pumps share one shaft with drive engine while housings of adjacent hydraulic pumps are rigidly connected.
EFFECT: higher reliability, compact design.
4 cl, 1 dwg
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