SU378161A1 - PLANTING MACHINE - Google Patents

Description

one

The invention relates to the field of agricultural engineering.

Precision sowing machines are known that have special devices, for example, an active wiper roller or passive plate for delaying or clearing excess seeds.

However, any scrubbing device, both active and passive, located in the zone of filling the cells with seeds, reduces the latter and disrupts the number of seeds along the movement paths of the cells. Thus, the filling of the cells worsens and the damage to the seeds increases.

Apparatus is also known in which there are no wiping devices and a filling zone of 360 °.

However, in the case of an axial displacement of the seed disc, the gap between the disc and the housing changes in the seed zone. As the gap increases, twins appear and seed damage increases. The special shape of the exit window of the hull when sowing seeds of a malignant shape, such as maize or one-way sugar beet, also does not fully eliminate the sowing of twins and the crushing of seeds.

In order to improve the single filling of the seeds of the sowing disc with seeds, in the apparatus proposed, the inside of the housing is provided with an annular protrusion adjacent to the sowing disc from the filling area of the cells, the inner diameter of the protrusion being smaller than the outer diameter of the disc.

In addition, the annular protrusion of the housing is formed by a replaceable ring installed in the filling area of the disk cells.

FIG. 1 schematically shows a part of the housing of the metering unit, side view;

in fig. 2 - the same, a cut along the AL; in fig. 3 4 - housing modifications.

The inner part of the housing 1 of the metering device is provided with an annular protrusion 2. The inner diameter of the protrusion is smaller than the outer diameter of the seed meter 3.

When installed in the housing of the sowing disc apparatus close to the protrusion, the passage size in the cell decreases (in the direction of the disc radius). Therefore, when filling

This cell must pass through a kalo-1-opening entrance window, the dimensions of which are determined by the cell length along the arc of the disk circumference and the window height a (in the direction of the disk radius), which is less than the cell depth due to the difference between the outer diameter of the disc and the inner diameter of the cylindrical protrusion. In this case, the entrance window can be adjusted in height (size a) depending on the inner diameter of the annular

protrusion.

3

Due to the annular protrusion made along the entire length of the filling zone, seeds of non-spherical shape (flat, long) fall into the cells oriented (the long axis of the seed in the direction of the length of the cell, and not across). Seed orientation occurs along the entire length of the filling area, which significantly improves cell filling and reduces seed damage during seeding.

The annular protrusion of the housing can be integrally formed with the housing (see Figs. 1 and 2), or formed by a replaceable ring installed in the filling area of the disk cells (see Fig. 3 and 4). Replaceable rings, having changed the size and height of the entrance window into the cell, in some limits allow the same disc to be used for different seed fractions.

Subject invention

Claims (2)

1. A high precision seeding machine that includes a housing with an exit window and A seed disk with seed cells installed in it, characterized in that, in order to improve the single filling of seeds of the seed disk with seeds, the inner part of the housing is provided with an annular protrusion adjacent to the seed disk from the side of the cell filling area, and the inner diameter of the protrusion is smaller than the outer diameter disk. 2. An apparatus according to claim 1, characterized in that the annular protrusion of the housing is formed by an interchangeable ring installed in the filling area of the disk cells. 0 // /