| 摘要 |
FIELD: agricultural machine engineering. SUBSTANCE: working organ includes vertical strut and joined with it cultivating-cutting member. Member is in the form of different-area flat knives mounted in different levels, having cutting edges on their front portions and joined with vertical lateral knife whose blade is turned towards knives. Cutting edge of lateral knife is inclined relative to motion direction by angle equal to 60-70 deg. Cutting edge of blade of flat knife of upper level is inclined relative to plane of its knife by angle 60<EMI ID=0.155 HE=3 WI=3 TI=CHI>5 deg. Cutting edge of blade of flat knife of lower level is inclined relative to plane of its knife by angle 45<EMI ID=0.156 HE=3 WI=3 TI=CHI>5 deg. Lateral knife has flap on its vertical face. Flap is arranged in front of strut and it is formed by local deformation of portion of lateral surface of knife in front of strut in zone of arrangement of fastening members. EFFECT: lowered traction resistance, increased degree of soil crumbling. 8 cl, 6 dwgh
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