RU1787336C - Tiller tool - Google Patents

Abstract

The invention relates to agriculture, in particular to working bodies for tillage. The purpose of the invention is to improve the quality of soil cultivation. The working body of the milling cutter has the limb of the ends 4 of the knives 3 fixed on one plane of the disk 2 from the plane of rotation of the disk at an angle, determined from the ratio given in the text of the description. 4 ill.

Description

Shchig. 1

The invention relates to agricultural machinery, in particular to the working bodies of a tillage cutter.

The purpose of the invention is to improve the quality of tillage.

In FIG. 1 shows the proposed working tillage cutter, view sDoku; figure 2 is the same front view; in fi g., the design scheme for determining the angle OD5 in Fig. 4 is a diagram of a section processed by adjacent plate knives.

The working body of the tillage mill consists of a horizontal shaft 1, on which plate knives 3 are fixed by means of flat hubs 2. The working part 4 of the plate knives 3 is made flat and installed with an inclination from the plane of rotation P of the hub 2 to the shaft 1. Moreover, the ends of all plate knives 3 are located at the same distance from the shaft 1 and their trajectory on the profile plane of the projection describes a circle O with an equal radius R.

The working parts 4 of the adjacent blade knives 3 fixed on each hub 2 are located at different angles a to the rotation plane flij of the latter.

The angle (ori) between the plane of the working part 4 of each blade knife 3 and the plane of rotation of the hub 2 is determined from the ratio

"Arctan 2 (R1 r) 2 (2 - 1) -1,

where c. - an acute angle between the plane of the working part of the 1st knife and the plane of rotation of the hub;

R is the radius of the circle described by the ends of the knives during their rotation;

g is the radius of the hub;

L is the distance between adjacent hubs;

i is the serial number of the knife, i 1 ... Z

t-thickness of the hub.

In the process, the working body performs both translational (with speed V) and rotational (with speed SU) motion. In this case, due to the location at different angles a to the plane of rotation of the hub 2, each blade knife 3 processes a certain section, parallel offset from the section machined by the previous knife. The implementation in this case, the value of the angle d by the ratio

05 arctg 2 (R1-r) t7Z ()

ensures the continuity of the trace between adjacent knives fixed both on the same hub and on adjacent hubs.

This uniform arrangement of the ends of the working parts 4 of the blade knives 3 over the entire width of the cutter drum eliminates the formation of untreated areas, thereby improving the quality of the soil treatment.

Claims (1)

The claims The working body of the tillage cutter, containing a horizontal shaft located perpendicular to the direction of movement, on which lamellar knives are fixed by means of flat hubs, the working part of each of which is made flat and mounted with an inclination from the plane of rotation of the hub to the shaft, with the ends of all knives located at the same distance from the shaft, characterized in that, in order to improve the quality of tillage, the working parts of the knives fixed on each hub are located at different angles to the plane of rotation of the latter, while the angle between the plane of the working part of each knife and the plane of rotation of the hub is determined from the ratio and  arctg utdg-d) T1 (2 | 1) where a is an acute angle between the plane of the working part of the i-knife and the plane of rotation of the hub; R is the radius of the circle described by the ends of the knives during their rotation; g-radius of the hub; L is the distance between adjacent hubs; i is the serial number of the knife (from 1 to Z); t is the thickness of the hub. Fi g Fig.Z