IMPLEMENT FRAME WITH MAIN SECTION HELPER LIFT CYLINDERS

摘要

A folding implement frame is disclosed having seven sections when in a field use position and nine sections when folded. The frame design allows a frame having a width of greater than 27 meters to be folded into a transport position having a width of less than eight meters and a height of less than six meters. The hydraulic system is used to transfer weight to the main or center frame section during folding and unfolding to enhance frame stability. The hydraulic system uses one or more accumulators to minimize the amount of oil reduction in the tractor reservoir resulting from extension of the hydraulic cylinders of the implement. Implement raise and lower cycle times are minimized by providing a second helper cylinder to lift the frame main section when the entire implement weight is on the main section and allowing a smaller cylinder to be used for lifting the frame main section in the field use position for shorter cycle times to raise and lower the implement for turns in the field.