FIELD: transport.
SUBSTANCE: all-wheel steering system for tractor includes steering wheel with dosing pump the control channels of which communicate with oil pipelines with front wheels turn hydraulic cylinder, and rear wheels turn hydraulic booster. The rear wheels turn hydraulic booster includes signal hydraulic cylinder the cavities of which are connected by oil pipelines with dosing pump control channels in parallel to front wheels turn hydraulic cylinder. Signal hydraulic cylinder stem is connected with compressed to threshold force centring spring with possibility of stronger compression by the signal hydraulic cylinder at given pressure in it and is connected with rear wheels via hydraulic control valve. Hydraulic control valve control channels communicate with rear wheels turn hydraulic cylinder.
EFFECT: better controllability of tractor.
1 dwg
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