FIELD: transport engineering. SUBSTANCE: device has main power coupling of trailer draft pole and tractor and also tractor mounting system whose lifting levers are connected with trailer front axle through crossmember and flexible member. Main power coupling has towing gear whose flexible member is made in form of coil spring mechanically coupled with drive of spool of tractor mounting system draft control. EFFECT: increased cross-country capacity of tractor. 2 dwg
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