AUTOMATIC HEIGHT ADJUSTMENT OF CROP HARVESTER

摘要

A crop harvester, particularly of a cotton-picker-type in which the row unit is suspended on a main supporting structure to rock about a transverse axis and in which there is provided a hydraulic motor for rocking the unit so as to raise and lower the forward end which is controlled by a ground-sensing device at the forward end of the row unit. The unit is further characterized by having a hydraulic cylinder which will raise and lower the structure suspending the unit and the hydraulic cylinder is controlled through a valve and mechanical linkage connection to the row unit that actuates the latter hydraulic cylinder upon the row unit being rocked beyond a predetermined range of movement.