UA123713C2 - WAVE DISC SOIL-CUTTING DISC - Google Patents

Abstract

The invention relates to the field of agriculture, in particular to tillage machines. The corrugated tillage disk contains an external cutting edge of a wavy form, the central fastening part, the working part of the wavy form connected to a smooth surface of its central part, the working part has various length of half-waves with a crest on the convex side and half-waves with a crest on a concave side. with a crest on the convex side of the disk at least one and a half times the wavelength with a crest on the concave side of the disk. Alternatively, the crest lines of the half-waves on the convex side of the disk can be made straight or in the form of arcs whose radius is greater than the radius of the arcs of the crest of the half-waves on the concave side of the disk.

Description

The invention belongs to the field of agriculture, in particular to tillage machines.

Widely known wavy (corrugated) disks, symmetrical about the plane of the central part, in which the cutting edge, made along a curve, is close to a sinusoid, and the height of the waves decreases to the flat central part of the disk (1, 2). Due to the lengthening of the cutting edge of the disk and the destructive effect of the side surfaces of the waves on the soil fragments in contact with them, the process of soil crushing intensifies. Usually, such disks are installed without an angle of attack and inclination in the longitudinal-vertical plane, or in disk sections, the axis of which is located across the longitudinal axis of the tool. They are also used for crushing previously loosened soil. The limitation of their working conditions, unsuitability for installation with an angle of attack for intensification of crushing is a disadvantage of such disks.

Also known is a wavy disk with a variable wave around the perimeter of the disk, used in front of equipment, such as a seeder, to break up a narrow strip of soil in order to prepare it for sowing IZ). Waves with large amplitudes of deviation from the plane provide the driving force for the rotation of the wavy disk with an alternating wave. Waves with smaller amplitudes of deviation from the plane ensure penetration into the soil. The result is a tool that works in both wet and dry conditions. However, the known wavy disk with an alternating wave is designed for loosening only a narrow strip of soil.

The closest in terms of features to the claimed invention is a tillage disc containing an outer cutting edge of a wavy shape, a central fastening part, a working part of a wavy shape, connected to the smooth surface of its central part, while the lines of wave crests on the convex side of the disc are made in the form of generating the surface of a straight cone is the closest analogue |4). The lines of wave crests on the concave side of the disc are made in the form of arcs with a constant radius of curvature. The shape of the blade and the annular sections of the waves are close to a sinusoid. On both sides of the disc, the lines of wave crests and troughs are smoothly coupled with the side surfaces of the waves. The disc can be installed with an angle of attack on an individual riser and in a multi-disc section.

Making waves on the concave side of the disk with creative arcs improves the efficiency of the disk for crushing the soil and increases strength. However, due to the small distance between the crests of the waves on the concave side, the side surfaces of the waves cannot clamp and crush the large block.

З Due to the proximity to each other of the lateral sides of the waves, they can stick when processing soil with high humidity of the entire processed layer or surface layer.

The technical task of the invention is to increase the intensity of crushing dry solid blocks and the stability of the disk without sticking with overmoistened soil.

The given technical problem is solved by the fact that in a wavy tillage disk, which contains an outer cutting edge of a wavy shape, a central fastening part, a working part of a wavy shape, connected to the smooth surface of its central part, the working part has different lengths of half waves with a ridge on the convex side and half waves with the crest on the concave side of the disk, and the length of the half-waves with the crest on the convex side of the disk is at least one and a half times the length of the half-waves with the crest on the concave side of the disk.

In addition, in the disc wavy tillage line, the half-wave ridges on the convex side of the disc are straight or in the form of arcs, the radius of which is greater than the radius of the arcs of the half-wave ridges on the concave side of the disc.

The invention is explained with drawings. In Fig. 1 - a side view of the undulating tiller disc is presented, in Fig. 2 - a top view from the side of the disc bulge, in Fig. C - a side view, relative to the image in Fig.2.

The wavy tillage disk contains a smooth central fastening part 1, which smoothly transitions into a working part of a wavy shape 2 with wave crests Z on the convex side of the disk and wave crests 4 on its concave side, with the side surfaces of waves 5 and a blade 6 on the outer edge of the disk. The disk is sharpened at an angle B - 25" from its convex side.

The lines of the crests of waves C and 4 are straight and arranged in the form of straight cones, and the cone with a larger base forms the crests of the waves on the convex side of the disc. As an option, the lines of wave crests on both sides, or only on the concave side of the disk, can be made in the form of arcs, the radius of which on the concave side of the disk is less than the radius of the arcs of crests C on its convex side.

On both sides of the disc, the lines of wave crests and troughs are smoothly connected to the side surfaces of the 5 waves. The height of the waves on both sides of the disk decreases from the blade b to its smooth central part 1. The width of the working part of the wavy shape 2 is more than half of the larger radius AB of the disk. The entire smooth surface 1 of the central part of the disk can be spherical or contain a flat part smoothly connected to it, which contacts the flange of the bearing assembly, or the flat end of the spacer coil of the multi-disk section, on which 60 the disk is installed.

The points of the blade b on the crests of 4 waves from the side of the disc concavity, lying in the t-t plane, form the circle of the base of the cone with the apex 0. The points on the crests of the waves from the side of the disc convexity, lying in the p-p plane, form the circle of the base of the corresponding cone . The distance between these planes 2P, located between them by planes Е-Е, equidistant from the planes т-т and р-р, divides the wave height of both sides of the disk into two parts of height n. In the plane Е-Е there is a circle passing through the points blades 6, equidistant from the planes т-т and р-р. Along the circle located in the E-E plane, the distance 51 between the points C and O of the blade section 6 with the ridge Z on the convex side of the disk is at least one and a half times greater than the distance 52 between the points of the blades E with the ridges 4 on its concave side. The length of the arc CE (or, accordingly, AB in Fig. 3) of the circle between the points of the blade 6 with ridges on the convex and concave sides is equal to 2 n/p where g is the radius of the circle, and n is the number of pairs of waves containing ridges on the convex and concave sides disc The amplitude of the wave of the blade line 6 is greater than or equal to 40 mm, i.e. -2/n 240 mm. The sweep of blade line 6 is close to a shortened cycloid.

Thus, a wavy disk with different half-wave lengths with crests on its concave and convex sides was proposed for the first time, and the length of half-waves with a crest on the convex side of the disk is greater than the length of half-waves with a crest on the concave side of the disk.

When rolling the sunken disc, its blade would cut through plant remains. In the critical mode, when the disk is deeply indented, the stems are not rolled up, as the wavy shape of the cutting edge 6 ensures their pinching, which is necessary for cutting. A disk installed with an angle of attack (16-247) loosens a strip of soil. The angle between the direction of movement of the disc and the front side surface on the concave side of the disc, sufficient to pinch and destroy soil depths. With the surface of the working parts of the concave side, the disc clamps and crushes lumps and blocks, including large ones located between and in front of the crests of 4 waves.

The efficiency of the disk in crushing the soil, in comparison with the closest analogue, is improved due to the fact that the distance between the side surfaces of the waves with ridges 4 on the concave side of the disk is increased. Thus, large blocks of soil are placed between them, clamped and destroyed.

The disk is not prone to surface sticking, since on the concave side that interacts with the ground, it does not contain side surfaces of waves facing each other and located close to each other. Discs,

That is why they do not stick, evenly and stably sink to the specified depth, therefore they break the soil better. The intensity of crushing is higher with a larger amplitude of 2n points of the blade 6. The distance between the wave crests on the concave side is sufficient to place large blocks in the gap between them, their pinching and crushing.

The wavy tillage disc can be installed in a multi-disc section located with an angle of attack, or on an individual riser with an angle of attack and inclination. The wavy disc of the proposed shape will increase the intensity of breaking strong blocks and improve the stability of the tool without sticking on moist soils.

Sources of information: 1. Combined tillage tools: pat. 2161388 VO: IPC AOTV 49/02 /

V.B. Rkov, V.M. Taranin, O.V. Maksymenko. - MO 99111033/13, application 17.05.1999, publ. 10.01.2001 2. To Mamu Sotzschzeg: pat. 5649602 05: IPC AO1B 49/02 / Ootsdiavz village. Will die - Mo 540,544, statement 06.10.1995, publ. 22.07.1997.

Z. Mapariye uame sotseg: pat. 7497270 05: IPC AOTV 59/00 / Yuotsdiaz village. Will die -

Mo. 11/237,142, application 28.09.2005, publ. 29.03.2007 4. Tillage disc: pat. 118487 OA, IPC АО1В 7/00, А0О1В 15/16, АО1В 35/20 /

V.I. Vetokhin, O.F. Zhuk - Mo a 201702311, statement 13.03.2017, publ. 25.01.2019, Bul. Mo 2.

Claims (2)

FORMULA OF THE INVENTION 1. A wavy tillage disk, containing an outer cutting edge of a wavy shape, a central fastening part, a working part of a wavy shape, connected to the smooth surface of its central part, which is distinguished by the fact that the working part has different lengths of half waves with a ridge on the convex side and half waves with crest on the concave side of the disk, and the length of the half-waves with the crest on the convex side of the disk is at least one and a half times the length of the half-waves with the crest on the concave side of the disk. 2. The wavy disc for soil cultivation according to claim 1, which differs in that the lines of the half-wave crests on the convex side of the disc are straight or in the form of arcs, the radius of which is greater than the radius of the arcs of the half-wave crests on the concave side of the disc.