AGRICULTURAL UNIT Russian patent published in 2003 - IPC

FIELD: agricultural engineering. SUBSTANCE: agricultural unit has multishare plow provided with central beam and hitched to self-propelled powered vehicle. Plow bodies and front and rear bars are mounted on central beam. Bars are arranged in horizontal plane for rotation around their longitudinal axes and for repositioning along these axes. Tines are mounted on furrow ends of bars for rotation around their axes and for repositioning along these axes. Ends of loosely rotating chain module with mellowing teeth on chain links are coupled through connecting units to tines. Front bar is attached to central beam for rocking in horizontal plane by means of pivotal joint with vertical axis of rotation. Pivotal joint is mounted on front end of central beam. Cantilevered portion of front bar is provided with movable bushing operatively connected to spacer screw of collapsible construction. Screw is pivotally attached with its free end on central beam. Front vertical tine for attachment of chain module is made in the form of flat flexible member. Mechanical winch with ratchet mechanism is mounted centrally of central beam. Free end of winch cable is equipped with hook and is running around pin of pivot joint of central beam. Hook is operatively coupled in alternation to each of two eyelets fixed on opposite ends of front bar or to chain module or to movable ballast disposed on plow for changing spatial orientation of above mentioned members of agricultural unit with respect to central beam in the process of moving agricultural unit to transport or operating position. Such construction allows weight of front bar to be reduced without changing its rigidity, chain module to be tightened by means of spacer screw and flexure of front vertical tine to be eliminated. Unit may be used for simultaneous plowing and harrowing of soil. EFFECT: increased efficiency and simplified positioning of unit members from one position to another position. 2 cl, 11 dwg