DEVICE TO INCREASE CROSS-COUNTRY CAPACITY OF WHEELED TRACTORS OPERATING WITH TRAILERS Russian patent published in 1999 - IPC

FIELD: transport engineering; wheeled tractors. SUBSTANCE: invention relates to wheeled tractors equipped with automatic mounting draft control system, namely to device aimed at increasing cross-country capacity and efficiency of wheeled tractors operating with trailers and other trailer-type machines. Proposed device has crossmember secured on tractor mounting system lift levers, and spring-loaded tie-rod coupled with flexible member whose ends are secured on front axle of trailer. Tie-rod is provided with roller, and flexible member is passed over this roller. Pole of trailer is connected with lever of load sensing mechanism coupled with drive of spool of lift lever hydraulic drive for tensioning flexible member. EFFECT: provision of automatic control of adhesion weight on tractor rear wheels depending on draft resistance of trailer, reduced traction load fluctuations on tractor hook, improved steerability. 3 dwg