SU1313370A1 - Drum-type sowing apparatus - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to agricultural machinery. The purpose of the invention is to improve the dosage uniformity while extending the range of seed dosage adjustment. The apparatus includes a housing 1 with coaxially mounted clutch 2.g with a rib, a grooved coil 4, an outlet 5 and a bottom 6 mounted under them, pivotally connected from the outlet side to the flap 7 having a groove 8. The groove 8 includes a carrier 9 attached to the coupling 2. The carrier 9 and the flap 7 with the groove 8 form a rocker mechanism, which allows automatically changing the geometry of the thrust when the coil is axially moved. In this case, the bottom geometry is changed so that the ratio of the length of the working part of the coil to the tangent of the angle between the outlet edge of the flap and the wall of the housing does not change. This automatically adjusts the apparatus to a predetermined dosage uniformity. 1 3.p. f-ly, 3 ill. 1- “с (L с со со со KJ (poe.f

Description

eleven

FIELD OF THE INVENTION The invention relates to agricultural machinery, primarily to apparatuses for dispensing granular substances.

The aim of the invention is to improve the dosage uniformity while expanding the range of adjustment of seed doses,

FIG. 1 depicts the proposed coil sowing machine, top view; in fig. 2 - section A-Afig. 1 in FIG. 3 — the mechanism for driving the flap of the apparatus.

The device consists of a housing 1 with coaxially mounted coupling 2 with an edge 3, a grooved coil 4, a socket 5 and a bottom 6 installed under them, pivotally connected from the outlet side to the flap 7 having a groove 8 which the carrier 9 attaches to clutch 2, while

1p

const

tgct

where 1p is the length of the working part of the coil, mm;

ct is the angle between the outlet edge of the flap and the casing wall,

hail.

The device works as follows.

When the coil 4 is rotated clockwise, its grooves capture the material, pull it between themselves and the bottom 6, and feed it to the flap 7, where the material flow is equalized and reset (Fig. 1). The socket 5 at the same time rotates with the coil 4 and prevents the material from the housing 1 from pouring out through the coil. Clutch 2 is stationary and prevents the material 3 from being requested with its edge, so that later, the chassis is pushed by the grooved coil 4 out of the hole, the length of which is equal to the length of the working part of the coil (Fig. 1 and 2).

When adjusting the dose, the coil 4 is moved along the axis of its rotation through the socket 5 inside the housing 1 together with the coupling 2, which by means of the carrier 9 acts on the groove 8 of the shutter 7, which rotates relative to the hinge, changing the angle between the outlet edge of the shutter and the wall of the case, t. e. change the bottom geometry (Fig. 2 and 3).

370 2

The carrier 9 and the flap 7 with the groove 8 form a rocker mechanism allowing the bottom to automatically change its geometry during axial mixing of the coil. In this case, the bottom geometry is changed in such a way that the ratio of the length of the working part of the coil to the tangent of the angle between the outlet edge of the valve 7 (being the extension of the bottom 6) and the wall of the housing does not change, but remains constant for any working length of the coil.

This provides a constant amount of overlap of the grooves by the outlet edge of the valve (the outlet edge of the bottom with a variable geometry) regardless of the magnitude of the axial movement of the coil, i.e. automatically adjusts the device to the required uniformity of dosing.

Due to this connection, the axial movement of the grooved coil with the bottom geometry, even at the shortest 5th length of the working part of the coil (commensurate with the grain size distribution of the material), provides an overlap of the grooves equal to the overlap at its maximum length.

0 This allows, when setting up the apparatus for any practically possible dose, to pass the discharge edge of the flap (bottom) of the coil grooves — not immediately along the entire working length, but

5 gradually.

Claims (2)

1. Coil sowing apparatus, 0 containing case with placed in it coaxially coupling with the edge, a grooved coil and a socket and a bottom installed under them, distinguished with the fact that, with the aim 45 to increase the dosage uniformity while expanding the range of adjusting the doses of seeds, it is equipped with a flap pivotally mounted on the bottom and can be rotated by means of a carrier, one end of which is rigidly fixed on the coupling and the other in a groove made in the flap. 2. The device according to claim 1, distinguished by 55 th u and with the fact that the edge of the valve is located at an angle to the wall of the case, which is in proportion to the length of the working part of the coil  - const, tgf / where p is the length of the working part of the coil - the angle between the outlet edge of the flap and the wall of the housing. fie. 2 Fig.Z