Working tool for rotary tiller

FIELD: agricultural engineering, in particular, equipment for processing of licorice roots.

SUBSTANCE: working tool for rotary tiller has L-shaped knife with bent wing provided in lower part of tine. Flat portion of knife including bent wing is joined to C-shaped member. Tine, wing bent portion, C-shaped member and flat portion of knife are made in the form of integral part manufactured from strip construction steel and equipped with cutting edge extending along longer strip. Cutting edge has variable sharpening angle reducing in direction of free end of knife flat portion. Mounting part of tine is equipped with receiving cylindrical belt. Bending lines of wing and C-shaped member are offset from their surfaces by value equal to bending radius r=(0.7-0.9)xb, where b is width of wind. Angle between cutting edge of tine, wing bent portion, C-shaped member, knife flat portion and bending lines of wing and C-shaped member is 45-75 deg.

EFFECT: increased efficiency by providing clean cut of licorice roots in the process of removal of blackhead and reduced labor intensity in manual processing of licorice root mass.

4 cl, 4 dwg

 

The invention relates to agricultural machinery, in particular to a technique for extraction of licorice raw materials when it is ejected on the surface in the wild Solodkova associations or cultural plantations.

Known working body for soil mainly rice fields, comprising a drive shaft with a flange, which in turn pinned flat and l-shaped knives, which, with the goal of improving the quality of soil, flat knives set at an acute angle relative to the direction of rotation, with l-shaped blades have a length of greater length flat blades (SU inventor's certificate No. 1011063 M CL3AV 33/02. Smederevka. The working body for tillage. (USSR). - Application No. 3364063/30-15. Appl. 04.12.1981. Publ. 15.04.1983. Bull. No. 14).

The drawback of the working body in relation to the problem to be solved by us - the destruction of subsistence parts of licorice roots and grinding stubble related legumes and grasses herbs include poor quality of cut apical parts of the roots of licorice before it is retrieved from karastergiou layer.

The closest analogue to the claimed object is the working body of tillage cutter comprising a knife G-shaped, in which, with the goal of reducing energy intensity of frezowanie, the contour of the wing knife is made with a ratio of width the us capture of a knife to the radius of the wing, equal to 0,15-0,30 (SU inventor's certificate No. 971132. M CL3AV 33/10. Vigorelle, Vayanos, Ostaschenco, Wmini. (USSR). The working body of tillage cutter. - Application No. 3000289/30-15. Appl. 03.11.1980. Publ. 07.11.1982. Bull. No. 41).

The drawback of the working body, adopted as naiblizhajshee of similar, related, despite a certain reduction of energy consumption, low cut quality and high spike at the roots because of the oblique slice.

The essence of the claimed inventions

Task to be solved by the claimed invention is directed, increasing productivity while removing non-tradable parts of licorice roots in industrial production licorice raw materials.

The technical result improved quality of cut on licorice roots when removing Karabash.

This technical result is achieved by the fact that in known working body of tillage cutter comprising a knife G-shaped contour of the wing in the bottom of the rack according to the invention, the flat part of the knife with the contour of the wing paired ⊂-shaped element, at this hour, the contour of the wing, ⊂-shaped element and the flat part of the knife is made as a single piece from a strip of structural steel with a cutting edge along the long shelf formed by variable angle sharpening, decreasing towards the free end of the flat part of the auger, the mounting of the rack is equipped with boarding cylindrical band, the line of the contour of the wing and ⊂-shaped element displaced from their surfaces by the amount of bend radii r, equal to r=(0,7...0,8)b, where b is the width of the wing, the angle between the cutting edge of the rack, the contour of the wing, ⊂-shaped element and the flat part of the knife and the lines of the contour of the wing and ⊂-shaped element is made equal to 45...75°.

The invention is illustrated by drawings.

Figure 1 shows the working body of tillage cutter, front view.

Figure 2 - the same, left side view.

Figure 3 - same view in the plan.

Figure 4 shows a scan of the surface of the working body of tillage cutter.

Information confirming the possibility of implementing the claimed invention are as follows.

The working body of tillage cutter includes a knife 1 G-shaped contour of the wing 2 in the bottom of the rack 3. The flat part 4 1 knife paired ⊂-shaped element 5. Hour 3, the contour of the wing 2, ⊂-shaped element 5 and the flat portion 4 of the knife 1 is made as a single part (4) of the bandpass structural steel with a cutting edge 6 along the long shelves. The cutting edge 6 in the form of a continuous line formed by a variable-angle sharpening r1>r2>r3decreasing towards the free end 7 of the flat portion 4 of the knife 1. Volumetric configuration C is shown working body is formed of consecutive contour of the steel strip with a pre-made cutting edge 6 along the fold lines 8, 9, 10 (see figure 4, 2 and 1)that are installed at an angle γ to the cutting edge 6. Angle γ between the cutting edge 6 of the rack 3, the contour of the wing 2, ⊂-shaped element 5 and the flat part 4 of the knife 1 and the fold lines of the wing 2 and ⊂-shaped element 5 is made equal to 45...75°. Crease lines 8, 9 and 10 of the limb of the wing 2 and ⊂-shaped element 5 is displaced from their surfaces by removing the amount of bend radii r, equal to r=(0,7...0,8)×b, where b is the width of the wing 2 (see figure 1). Width of the wing 2 equal width ⊂-shaped element 5.

The mounting portion 11 of the rack 3 is equipped with boarding cylindrical belt 12 and holes 13 for mounting the tool on the disks of the hollow shaft of the sphere.

Working bodies of tillage areas function as follows.

When forward movement of the sphere and its rotation of the hollow shaft with the disks on the surface leads to the fact that the first work enters the cutting edge 7 on the front 3 front 1 knife. It separates cut aboveground part stubble of plants in Solodkova Association and dumps licorice of the total mass of plants.

The wing 2 is cut off the top part of the sward. Next cutting edge 7 ⊂-shaped element 5 is cut layer of soil with plant roots to the depth of the upper layer. As a continuous cutting edge 7 smoothly paired with a rack 3, contour the snout 2, ⊂-shaped element 5 and has a constant angle to the radius of the slice, then it is cut soil from the root remains constant force. Later in the work shall become the cutting edge 7 on the flat part 4 of the knife 1. The cutting edge 7 of the flat portion 4 of the knife 1 is deflected from the direction of movement of the cutter at an angle γ. As the angle of sharpening inchanges from the angle i1until i3accordingly, the cutting angle δ this will be:

δ1=arctan(tgi1cosγ)=22°00' if i1=25° and γ=60°

δ3=arctan(tgi3cosγ)=10°25' i3=12° and γ=60°.

Thus, there is a smooth cutting of Karabash subsistence and upper parts of the roots in substantial contact of the cutting angle δ licorice, ⊂-shaped element 5 of the knife 1 in the design eliminates the dynamic loads on the rack 3 G-shaped knife 1.

Describe the essential features ensures the achievement of the task.

1. The working body of tillage cutter comprising a knife G-shaped contour of the wing in the bottom of the rack, characterized in that the flat part of the knife with the contour of the wing paired ⊂-shaped element, at this hour, the contour of the wing, ⊂-shaped element and the flat part of the knife is designed as a single part from a strip of structural steel with the cutting chrome is Oh, located along the long shelves and having a variable angle of sharpening, decreasing towards the free end of the flat part of a knife.

2. The working body according to claim 1, characterized in that the mounting of the rack is equipped with boarding cylindrical belt.

3. The working body according to claim 1, characterized in that the fold line of the wing and ⊂-shaped element displaced from their surfaces by the value of the bend radius r, equal to r=(0,7...0,8)·b, where b is the width of the wing.

4. The working body according to claim 1, characterized in that the angle between the cutting edge of the rack, the contour of the wing, ⊂-shaped element, the flat part of the knife and the lines of the contour of the wing and ⊂-shaped element is made equal to 45...75°.



 

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