| 摘要 |
FIELD: machine building.SUBSTANCE: bedder planter comprises ridge formers fixed on frame 4, drilling mechanisms and compacting rollers 3. Ridgers 4 comprise a rack, lancet blade leg and an arm. Bracket is mounted on the rack. Bracket is rigidly secured to adjusting disc axis, and a control disc rotatable about its axis, an additional disc. Adjustment and additional discs have holes arranged along its edges at equal distance from their centre. Under extra disc is rigidly fixed guide bracket with axle and blade. Blade is flat and is mounted on a half-axle to vary its position in height relative to rack along cutting edges lancet paws and attack angle in horizontal plane, and fixing in position. Blades of each pair of ridgers are mounted symmetrically with respect to line of seeds sown at an angle, solution of which is directed towards movement raised bed planter. Distance L between vertical axes of symmetry of blades is given by, where g is acceleration of gravity, m/s; ν - speed raised bed planter, m/s; α - angle of attack of blade, deg; β = arctgƒ; ƒ - coefficient of friction of soil on blade; ε - angle between field and direction of surface of soil drop, deg. Packer rollers comprise a frame, spherical discs 25, packer rings 29, axis 28, bar 30 with spring 31 and arranged for ridgers 4.EFFECT: higher quality of sowing of tilled crops and formation of soil ridges above sown seeds.1 cl, 5 dwg |
