SU55826A1 - Sowing machine - Google Patents

Description

Sowing devices are known, made in the form of a coil equipped with a helical groove and consisting of two parts, of which one is movable in the axial direction, in order to regulate sowing.

In the proposed sowing unit, the cross section of the groove at the junction of the helical lines is reduced in comparison with the rest of the groove, in order to prevent seeding pulsations.

In FIG. 1 shows a front view of a seed drill with a metering device, with a partial section; FIG. 2 - view of the side; FIG. 3 is a front view of the shaft with the coil of the metering unit; FIG. 4 is a view of a reel with a helical groove.

The sowing machine consists of a box 1, through which the shaft 2 with the coils passes. Each coil consists of two parts: a fixed 5 and a moving 4, shifted in the axial direction along with the shaft 2, in order to sow seeds of various sizes.

The movable part 4 of the coil is rigidly connected to the shaft 2 by means of the stopper 5. The stationary part 5 of the coil is connected to the wall of the box by means of the stopper 6 entering the recess 7 of the coil, and to the shaft by a key 8; the limiter does not prevent the rotation of the non-shifting coil 3 together with the shaft 2, at the same time does not allow this coil to move along the shaft during operation. The key 8 is included in the slot of the shaft and when rotating the latter rotates part 3 of the coil. The slot is introduced to allow movement of the shaft 2 along with parts of 4 yatas relative to the box 1 and the fixed part 3 of the coil, in order to change the working capacity of the groove when set to the seeding rate.

The working faces of the parts of the coils are cut along a helix with converging ends (a sweep of this line along a larger diameter is given in Fig. 4). The screw line at the junction becomes a smooth curve (Fig. 4), creating a slight decrease in the capacity of the groove. This reduction is intended to compensate for the increased seed filling density of the grooves that occur at the interface as a result of a change in the condition of the slip of the seeds relative to the working faces of the coil. The second option uye. Expansion of the capacity of the groove in places of fractures of the helix could be the device tides 9 on the shaft 2.

The box of the sowing unit is equipped with two vertical adjustable flaps: the top 0 (Fig. 2 and the bottom JL.) When the top seeding (turning clockwise), intended for large seeds, the groove takes the seeds out from under the top flap; at the bottom seeding (rotation counterclockwise), intended for small seeds, the seeds are thrown over the bottom flap.

For ease of cleaning, the box is provided with a folding bottom 12 mounted on a roller 13 and locked with a latch. The displacement of the shaft is made by a conventional regulator (not shown in the drawing).

The subject matter of the invention.

Claims (3)

1. The two-part elevator apparatus in the form of a coil, forming a helical groove, is marked by the fact that the cross-section of the groove at the junction of the helical lines is reduced in comparison with the rest of the groove, in order to prevent seeding pulsations. 2. In the apparatus according to claim 1, use one of the parts of the roller moving in the axial direction, in order to sow seeds of various sizes. 3. In the apparatus according to p. L, the use of the adjustable vertical valve located under the coil. G5 (M 00 yu yu Gts Sat td h f one f about l § g fcC wed o oh ed o Sc R: sz fV