SPRAYING BOOM CONTROL CIRCUIT Russian patent published in 2001 - IPC

FIELD: agricultural engineering. SUBSTANCE: control circuit has boom mounted on sprayer frame by means of frame hanger pivot joint, hydraulic power cylinder for raising boom, paired hydraulic power cylinders for boom folding, hydraulic cylinder for correcting boom position, communication means for connecting hydraulic cylinders with vehicle distributors. Hydraulic cylinder for correcting boom position is connected at its one side with boom and at its other side with load placed on guide for moving along boom horizontal axis. Load is driven by means of hydraulic cylinder for correcting boom position, in case field relief declines from horizontal position, for changing position of boom center of gravity relative to boom hanger pivot joint and for changing boom position relative to horizontal line. Spraying boom control circuit may be incorporated in machine for chemical protection of plants from pests and diseases. EFFECT: increased efficiency by uniform distribution of working fluid over field surface and, as a result, improved quality of plant treatment on ground with uneven surface relief. 2 dwg