WORKING TOOL OF TILLER Russian patent published in 2016 - IPC A01B35/20 A01B39/20 A01B39/18 A01B15/02 

FIELD: machine building.

SUBSTANCE: invention relates to agricultural machine building, particularly to tillage tools. Working member of tillage tool consists of two displaced relative to each other in horizontal direction parts with vertical and horizontal blades. Blades are formed by deformation of structural steel edges of lines in mirror reflection. Angle between line of bend and rear face of vertical blades of each part of working member is determined from relationship $$\cos \alpha =\frac{\left(a_{\max }+\mathrm{0,02}\right)\sin \left(\alpha -40°\right)}{\left(a_{\min }-\mathrm{0,02}\right)\sin \left(40°\right)},$$ where a_max and a_min are respectively maximum and minimum suggested depth of soil treatment in metres. Front part of each horizontal blade is cut from front point of fold line at an angle γ = 30° to fold line. On each vertical blade is formed by intersection of two sections along straight lines. Lower straight line section comes from front point of fold line and directed vertically upwards. Upper straight line section located on front edge comes from vertical blade point spaced from front point of fold line at distance $$l=\frac{\left(a_{\max }+\mathrm{0,02}\right)}{\sin \alpha },$$ directed downward and is directed to vertical at angle 50°. On edges formed as a result of section of horizontal blades and cuts vertical blades, by one-side sharpening made cutting edges, on which is sputtered (surfaced) wear-resistant material.

EFFECT: such design solution is aimed at reduction of tendency to tipping out of working member of tiller and reduction of its longitudinal size, as well as reducing likelihood of clogging with mortmass and plant residues.

1 cl, 6 dwg