WIDE-LEVEL SWEEP HARROW Russian patent published in 1996 - IPC

FIELD: agricultural engineering. SUBSTANCE: harrow has frame 1, chain sweep 3 with friction couplings 2 connected to frame 1. Tines 6 with spring-biased shoes 7 are rigidly secured on pipe ends. Shoes 7 are mounted in "floating" position. Brake couplings 2 mounted on tines 6 through brackets 9 and hinges 10 have covers 12 and bodies 13. Shafts 15 are positioned in bodies 13 on sleeves 14. Movable rotary brake washers 16 fixed on flats of one ends of shafts 15 are in contact with immovable washers 17 fixed on bodies 14. Disc cutters 18 are rigidly fixed on other ends of shafts 15. Shaft ends are pivotally connected with links of sweep 3. Supports 19 secured in horizontal plane on pipe 4 are adapted to receive tubular shaft 20 carrying drums 21 with detachable retainers 22. Cables 23 are fixed on drums 21. At least one adapter support mounted on sweep 3 has connecting finger 24 and disk cutter 25. Casing 26 rigidly fixed on disk cutter 25 is provided with carrier 28 attached to it through vertical pivot joint 27. Cable 23 is attached to carrier 28. Shaft is provided with drive handle 29 of shaft 20. By regulating cable length, sweep shape, its components and deflection value may be changed and, as a result, number of driving and driven teeth of sweep and its contours may be changed. EFFECT: increased efficiency in surface tillage of soil, wider operational capabilities by provision for operating on weedy soils or soils with different physical and mechanical properties. 4 cl, 6 dwg