SOIL TILLAGE TOOL PROTECTIVE DEVICE Russian patent published in 1998 - IPC

FIELD: agriculture and forestry, in particular, cultivation of heavy stony soils. SUBSTANCE: protective device has frame 7 and flexible mechanism 4 pivotally attached to frame 7. Flexible mechanism 4 has spring embracing sleeve and stem, connected with beam 1, which is pivotally suspended to frame 7. Case arranged between sleeve and stem of flexible mechanism 4 is provided with flange and through radial openings for receiving retainers formed as roll-type carts. Axes of rolls are arranged in apexes of equilateral triangles. Annular bores are made on stem and sleeve of flexible mechanism 4. Shock-absorber is positioned between case flange and sleeve. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 7 dwg