RU1817951C - Harrow - Google Patents

Abstract

Usage: surface tillage. SUMMARY OF THE INVENTION: The harrow comprises pivotally mounted disk sections mounted on a frame rotatably about a horizontal axis. The teeth are inclined to the plane of their rotation and have a bevel at the end. The angle between the cutting edge of the tooth and the edge of its bevel is 5-10 degrees less than the angle of deviation of the back edge of the tooth from the line of the radius of the disk to the side opposite to the direction of its rotation. .1 zp f-ly, 5 ill.

Description

The invention relates to agricultural machinery, in particular to rotary ion tillage tools and can be used for surface tillage using soil protection technology.

The purpose of the invention is to improve the quality of tillage, reduce metal consumption and reduce wear of the working elements - needle blades.

Figure 1 shows a diagram of a needle harrow, top view; figure 2 is the same side view; in Fig.Z - needle disk; figure 4 - needle; figure 5 - callout 1 from figure 2, the mechanism of fixation and movement of the rear battery.

The harrow (Fig. 1) includes a supporting beam 1 with brackets 2 for connecting sections of the working bodies, traverses 3 for fastening the load rods 4 (Fig. 2), an axis 5 with rolling wheels 6 and a power hydraulic cylinder 7, a front 8 and a rear 9 battery of needle batteries disks 10 mounted with overlap, which are combined in sections by the front 11 and rear 12 half-frames, the position of the rear battery relative to the front being changed by the screw mechanism 13 (Fig. 2) and fixed by a bolt 14, by screwing it into one of the two sliders 16, which oh Pipeline timber front Half Frame 11 povodom16.

The needle disk (FIG. 3) includes a sleeve 17 with a square hole 18, a bearing disk 19 with needles 20 fixed along its perimeter at an angle of 30 ° to the plane of rotation, and the needles themselves are tilted back along the rotation of the disk by an angle of 45 ° and to the side from its plane, the pointed side of the needle (blade) being on the outside.

The needle (Fig. 4) consists of a base 21 with a bevel at an angle a of 45 ° to its longitudinal side, a blade 22 with one-sided sharpening, a bevel 23 at the end of the needle, the tapered angle of which ft is 5-10 degrees less than the angle a, thereby reducing wear of the needles as a result of their sliding along the bottom of the furrow.

Harrow works as follows. As it moves across the field, the needles 20 of the batteries of the needle discs 10 are embedded in the soil

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to a certain depth, the value of which depends on the physicomechanical properties of the soil and the angle between the axis of rotation and the batteries and the direction of movement of the harrow, and the increased pressure of the spring-loaded rods. 4. The greater this angle (angle of attack), the greater the depth of the soil treatment. The needle discs of the front battery 8 loosen the untreated soil layer, crumble the edges and clumps, cut the weed vegetation, and the needle discs of the rear battery 9, which are next installed with overlap and relative displacement, perform the same treatment between the front discs, while the needles of the rear batteries also act on the soil raised by the front discs, dissecting it into small particles, thereby improving the quality of the soil treatment. When treating a stubble agricultural background, the stubble is cut, crushed and mixed with the soil of the upper layer, forming an erosion-resistant mulched soil layer that protects the soil from excessive moisture loss / This treatment ensures the accumulation of moisture in the soil and facilitates subsequent deep, for example , plowing, tillage.

. The uneven soil treatment that occurs when changing the angle of attack of the batteries is eliminated by moving the rear battery 9 of the needle discs relative to the front by means of a screw mechanism 13, and fixing them with a bolt 14, which is screwed into the slider 15 until it stops in the transverse beam of the front frame 11.

The self-cleaning of the needle disk batteries is ensured by the fact that they are marked with overlapping relative to each other. Mounting the needles on the disk in the above manner eliminates the capture of vegetation and, as a result, winding and clogging of batteries.

The use of the invention allows to improve the quality of

soil cultivation, the ecological stability of arable land, to reduce the metal consumption of the harrow by reducing the number of needle discs by 25% in comparison with the prototype.

Claims (2)

1. A harrow containing a frame with sections of rotary working bodies mounted on it, each of which is made in the form of a battery mounted with the possibility of rotation around the axis of the disks transverse to the translational direction with the needle teeth fixed on the periphery of each of these disks, the base of each of which are mounted on the disk at an angle to the plane of the latter, and the working part is directed from the axis of rotation of the disk in the direction opposite to the direction of its rotation, and at an angle to the plane its rotation, while the tooth has a one-sided sharpening, and at the end it is bevel, so that in order to reduce tooth wear, the sharp angle between the cutting edge and the direction of the bevel edge at the end of the tooth is 5 -10 ° less than the angle of deviation of the back edge of the tooth from the lines of the radius of the disk to the side opposite to the direction of its rotation, while the sharpening is located on the side of the tooth opposite to the direction of its bending from the plane of the disk. 2. The harrow according to claim 1, characterized in that each section of the rotary working bodies is made in the form of two installed one; after another of the disk batteries with needle / teeth, the ends of the teeth of the disks of one, the batteries are placed overlapping between the ends of the teeth of the other battery, and is equipped with means for moving the position of the rear battery dShzhrv relative to the front in the longitudinal direction, which are made in the form of 1} with lock and screw mechanism. 10 ti g to FIG. 2 Fig. / 1817951 /8 /9 / 7