RU2585079C1 - Rotary work tool of tiller - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: invention relates to agricultural machine building, particularly, to working members for surface treatment of soil. Set task is achieved by that rotary tiller working element having a disc with needles arranged on it, needles are made from spring steel. At end of each needle facing centre of disc there is a knee, which is inserted into an appropriate locking opening of disc. Knee at point of conjugation with rod of needle is located at right angle to its axis and at an angle 90° ≤ γ ≤ 135° to plane passing through working part of needle, and knee length exceeds thickness of disc. At same time diameter of each locking openings in disc are 0.5…1.0 mm larger than that of knee of needle. In disc periphery each needle is fixed with a clamp.

EFFECT: objective of disclosed invention is providing of self-cleaning rotary working elements from soil and plant residues combined with simple design and high technical reliability.

1 cl, 6 dwg

Description

The invention relates to agricultural machinery, in particular to the design of the working bodies for surface tillage.

Known rotary working body containing a disk with rigidly fixed needles on it [Needle harrow BIG-3. Machines for protecting soils from wind erosion. - Moscow: Rosselkhozizdat, 1977 - analogue].

The disadvantage of such a working body is the high probability of clogging it with soil and plant debris.

Closest to the proposed invention, the technical solution is the working body of the tillage implement, containing a disk made in the form of two half-hubs with pivotally mounted needles between them, between which arcuate springs are located, equipped with brackets and mounting stops [AC 852195 A01B 21/04. The working body of the tillage implement. - prototype].

The disadvantage of this working body is the design complexity and low technical reliability.

The objective of the invention is the provision of self-cleaning of rotary working bodies from soil and plant debris in combination with simplicity of design and high technical reliability.

The task is achieved by the fact that the rotary working body of the tillage implement containing the disk with the needles placed on it, the needles are made of spring steel. At the same time, at the end of each needle facing the center of the disk, a knee is made, which is inserted into the corresponding fixing hole of the disk. Moreover, the knee in the place of interfacing with the needle shaft is located at right angles to its axis and at an angle of 90 ° ≤γ≤135 ° to the plane passing through the working part of the needle, and the length of the knee is greater than the thickness of the disk. At the same time, the diameter of each fixing hole in the disk is 0.5 ... 1.0 mm larger than the diameter of the needle elbow. At the periphery of the disk, each needle is fixed with a clamp.

The invention is illustrated by illustrations.

In FIG. 1 shows the appearance of the proposed rotary working body of the tillage implement, FIG. 2 is a side view thereof, in FIG. 3 - the needle of the proposed rotational working body, in FIG. 4 and 5 - parameters of needles of various designs; in FIG. 6 is a section AA in FIG. 2.

The proposed rotary working body of the tillage implement (Fig. 1 and 2) contains a disk 1 with a hub 2 and needles 3 fixed on it, made of spring steel. At the end of each needle 3, facing the center of the disk 1, a knee 4 (Fig. 3) is made, the length of which l (Fig. 4-6) is greater than the thickness t of the disk (Fig. 6). Moreover, the knee 4 is located at right angles to the axis of the rod 5 of the needle 3 (Fig. 4 and 5) and at an angle of 90 ° ≤γ≤135 ° to the plane passing through the working part 6 of the needle 3. Knee 4 of each needle 3 (Fig. 6 ) freely, with a gap of 0.5 ... 1.0 mm, immersed in the corresponding locking hole made in the disk 1 at the hub 2. At the periphery of the disk, each needle is fixed with a clamp 7.

When the tillage tool moves along the field, the needles 3 (Figs. 1 and 2) are buried in the soil by 4-8 cm, mulching its upper layer, destroying the soil crust and destroying the filiform roots of the weeds. The presence of the elbow 4 (Fig. 3-6) inserted into the fixing hole of the disk 1, longer than the thickness of the disk 1 and its location at right angles to the axis of the rod 5 is guaranteed to keep the needle 3 from moving in the radial direction (Fig. 2), and the presence of the clamp 7 - in the direction perpendicular to the plane of the disk 1. At the same time, the ratio of the diameters of the knee 4 (d) and the fixing hole (D) of the disk 1 (Fig 6), the material for making needles 3 (spring steel), as well as the fact that the fixation the needle 3 in the direction normal to the plane of the disk 1 is carried out at one point (Fig. 1, 2), with osobstvuyut vibration occurrence of needle 3 during operation, which leads to their self-cleaning properties of the soil and plant debris, and also facilitates the process of tooth penetration into the soil. Moreover, the placement of the knee 4 at an angle of 90 ° ≤γ≤135 ° allows you to get both a disk of a flat design (at γ = 90 ° (Fig. 4)) with a frontal or aphrontal axis of rotation, and a disk of a spheroidal shape (at 90 ° ≤γ ≤135 ° (Fig. 5)) mounted on the gun afrontally.

Claims (1)

A rotary working body of a tillage implement containing a disk with needles placed on it, characterized in that the needles are made of spring steel, and a knee is made at the end of each needle facing the center of the disk, which is inserted into the corresponding fixing hole of the disk, with the knee in place pairing with the needle shaft is located at right angles to its axis and at an angle of 90 ° ≤γ≤135 ° to the plane passing through the working part of the needle, in addition, the elbow length is greater than the thickness of the disk, and the diameter of each fixing hole disk 0.5 ... 1.0 mm larger than the diameter of the needle knee, inter alia at the periphery of the disc each needle fixed clamp.

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