SU1746862A3 - Harrow tooth - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to agricultural machinery, in particular, to devices for tillage and embedding of seeds, herbicides, fertilizers. The purpose of the invention is to improve the quality of tillage through self-cleaning and embedding of herbicides, fertilizers, expanding the functionality of tine harrows. The harrow tooth contains a rod part with a pointed end and a main disk fixed on it by means of an axis, and the distance from the lower end of a tooth to the disk axis is longer than the length of the pointed end, and the tooth is provided with an additional disk located above the main one through the axis and installed relative to it with a gap and with overlapping vertically equal to 1/3 of the disk diameter. 3 il.

Description

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FIELD OF THE INVENTION The invention relates to agricultural machinery, in particular to working bodies for harrows.

The harrow tooth is known, the working part of which is made with a longitudinally vertical plate having a curved front and beveled lower edges, and an acute angle tangent to the leading edge with the lower edge is 1.

However, the known tooth does not produce a continuous tillage, between the grooves made by the harrow teeth, there are unprocessed strips that does not ensure the quality of tillage, embedding of herbicides, seeds, fertilizers.

The closest in technical essence to the present invention is a harrow tooth having a fastening, pivotal and pointed part on which a disk is fixed, the axis of which is located above the pointed end 2.

A disadvantage of the known tooth is that it does not have a clean, it can become clogged with moist soil, as a result of which the quality of tillage, planting of herbicides, seeds, fertilizers deteriorates.

The purpose of the invention is to improve the quality of tillage, reduce energy intensity and improve the uniformity of seed planting, herbicides, fertilizers, expanding the functionality of the tine harrow.

The goal is achieved by the fact that the tooth is provided with disks fixed on it with the possibility of rotation, which are arranged with a gap relative to each other and with an overlap equal to

- disc diameter, with the axis of the lower disO

ka is located above the pointed end of the tooth. When the tooth rotates around its axis, the angle of the agaki of the discs changes with respect to the direction of movement. In order to impart lateral stability to the harrow and to improve the mixing of the soil, the quality of embedment of these fertilizers, herbicides, half of the rows of teeth gives the right angle of attack, and the second half gives a left angle.

If an odd number of rows of teeth on the harrow, for example, five, on the middle row (third) half of the row of teeth, attaches the right angle of attack, the second half - the left, and if this results in a dump ridge or groove groove, then they level out subsequent rows of teeth with discs.

FIG. 1 shows a harrow tooth, rear view; - FIG. 2 - the same, right view; in fig. 3 - the same view at the angle of attack a (against the arrow A in the xyz coordinate system).

The harrow tooth consists of an assembly M, rod 1-Ј and pointed Parts. The assembly part M serves to fasten the tooth on the harrow frame (not shown).

The upper 1 and lower 2 disks of diameter D and thickness t, rotating respectively on axis x-3 and 4, diameter di, with heads of diameter d (circumscribed circle) are attached to the core part of the tooth L-.

The lower disk 2 is fixed above the pointed part f of the tooth in a slot of thickness n with the possibility of rotation on axis 4.

The upper disk 1 is fixed on axis 3 so that the overlap vertically between it and

bottom disc 2 is 1/3 of the diameter

disk D. The gap between the part L of the tooth and the disk 2 above axis 4, between the part of the tooth L and

disk 1 above axis 3, as well as between disks

1 and 2 in the overlap zone between them is n-m.

When choosing the diameter of the discs D and the places of their attachment on the core part of the tooth, the following conditions must be observed:

a) L-f f +1 D | D; L- & D, otherwise

the disk 1 rests in the harrow frame and will not rotate;

b) between the circumference of the disk 1 and the head with a diameter d of the lower axis 4 must

there must be a gap Dd allowing rotation of disk 1 and preventing clogging of disk 2;

c) the point of attachment of axis 4 should be higher than the pointed part of the larger

strength.

From FIG. 1 it is visible that at the overlapping, equal, for example. 1/2 D condition b) is violated, disk 1 is pressed into the head of axis 4, and disk

2upts in axis 3 and the discs will not rotate; when overlapping, for example, 1/4 D, the cleaning area of disk 2 by upper disk 1 will decrease, which will worsen the quality of the treatment due to more soil sticking to the lower disk.

Vertical overlap between disks 1 and 2 should be: technically as possible, but sufficient for the disks to rotate; the greater the overlap, the better the mutual cleanability of the disks

and intensive mixing of the treated soil layer with herbicides, fertilizers; the better the mixing of the soil, the more lumps are crushed and the seeds are better incorporated (for example, maize, sunflower, peas, which are buried to a depth greater than the depth of the harrow); the larger the overlap, the larger the soil that falls from disc 2 to disc 1 is affected by the rotating disc 1 and the better

agitated, ground; the greater the part of the treated soil layer on the rotating disks, and not on the passive) part of the tooth L, the less resistance, clogging, and therefore energy intensity; The 1/3 D overlap value is optimal from both a technical and a technological point of view.

The tooth works as follows.

When moving in the direction of arrow A (in Fig. 3) at an angle of attack a, the tooth penetrates the soil into the portion of the lower disk 2 projecting for L, and the depth of the protruding part of disk 2 beyond L-Ј can also be controlled by the angle of attack ( limits 15-45).

The soil chips, removed by the recessed part of the disk 2 as it rotates, moves sideways and forwards and partially transfers to disk 1, which, rotating, additionally crushes it. When discs 1 and 2 interact, the soil mixes well with fertilizers, herbicides, applied before or at the same time as harrowing using combined units.

Disks 1 and 2, interacting with rotation, are self-cleaning. The rod pointed I parts of the tooth also serve as a chip for discs 1 and 2.

In order to stabilize the movement of the harrow in the transverse direction, it is better to mix the soil with fertilizer and especially soil herbicides, half of the rows of tines (across the movement) attach the right angle of attack, half of the left, and if the number of rows of tines on the harrow is odd, In the BZSS-1, BZTS-1 harrows, the right angle of attack is attached to the middle half of the teeth, the left half is attached to the second half.

The ridge ridge or crown groove formed in this way is leveled by subsequent rows of teeth with discs.

. Disks 1 and 2 are made removable. By unscrewing the axes 3 and 4 with the disks 1 and 2, the tooth turns into a working body of a conventional tine harrow.

5 Use the tooth of the harrow BZSS-1, equip it with discs with a diameter of 70-100 mm with an interval of 10 mm. The thickness of the tooth is 16 mm, the thickness of the disks, 5 mm, the disks are made of steel 65G. Axles are made of

0 heat-treated steel 45, with a diameter of axes di 8 mm, Clearance mm.

Thus, I will equip a tooth of a usual zubovoy with rotating disks with an overlapping disks 1.2c

5 changes the angle of attack a. The quality of tillage is improved (continuous tillage), mixing the soil with fertilizers and herbicides. Rotating the discs reduces energy consumption compared to

0 conventional tooth or harrow, reduces tooth clogging with plant debris.

Making discs removable allows the use of a tooth with or without discs

5 of them. This extends the functionality of the tine harrow.

The harrow tooth is supplied with an additional rotating disk 1. It is located: above the main 2 and fixed

Claims (1)

0 relative to it with a gap and with overlapping vertically, improves the quality of tillage by self-cleaning. The invention of the harrow tooth containing core 5, the part with the pointed end and the disk fixed on it by the axis, and the distance from the end of the tooth to the axis of the disk is longer than the length of the pointed end, characterized in that, in order to increase 0 tillage quality due to self-cleaning, the tooth is provided with an additional disk located above the main axle and set relative to it with a gap and with overlap vertically, 5 equal to 1/3 of the disc diameter. Vug g fig.Z