DEVICE FOR STEPLESS ADJUSTMENT OF TRACTOR REAR WHEEL TRACK Russian patent published in 1998 - IPC

FIELD: agricultural and transport engineering. SUBSTANCE: device has power hydraulic cylinder installed in lower portion of tractor framework by means of brackets, hydraulic distributor, auxiliary rear wheel hydraulic cylinders, wheel axle-shafts being retractable rods of auxiliary hydraulic cylinders. Power hydraulic cylinder provides symmetrical turning of wheels through definite angle relative to longitudinal axis of tractor. Rod of power hydraulic cylinder is made in form of spool with rear wheel turning limiter. Moreover, device has bevel gear clusters providing transmission of torque to driving wheels both when wheels are fixed and in process of symmetrical turning of wheels. Functional ganging in of components provides automatic stabilization of rear driving wheels when regulating wheel track in planes parallel to direction of tractor movement. EFFECT: possibility of changing rear wheel track of row crop tractor within preset limits in movement without breaking power flow to driving wheels. 2 dwg