SU1468453A1 - Arrangement for thrashing the standing farm crops - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to agricultural machinery, in particular, devices for harvesting new grains. The purpose of the invention is to reduce the loss of grain. The device contains a drum 1 mounted on a drive shaft and a casing 5. The drum is equipped with stripping discs 3 with blades 4. To reduce grain losses, the surface of each blade 4 is shaped like a curvilinear surface formed by moving straight from the axis of rotation along the radius of the disk 3 and perpendicular to it with a proportional decrease in the angle between this straight line and the plane of the disk 3. During operation, the drum 1, rotating and moving into the grain, separates the disks 3 stems entering the stripe area, into longitudinal rows by by entering them into the threshing gap between the wilds 3. In the threshing gap, the stems fall under the constant impact of the blades 4 along their entire length, resulting in a more complete threshing of grain and its damage is reduced. 3 il. (Q (L

Description

fig .. /

The invention relates to agricultural machinery, in particular to devices for threshing agricultural crops with a fleece, leaving stem at the root.

The purpose of the invention is to reduce losses

grains.

FIG. 1 shows the proposed device, side view; in fig. 2 - the same, front view; in fig. 3 - disk with blades (view-A in Fig. 2).

The device contains a drum 1 mounted on the drive shaft 2. On the drum 1, the stripping discs 3 with Mi-4 blades are fixed. The drum 1 is enclosed in a casing 5 containing the zone of entry of the stalks of the threshed culture and the zone of entry of the combed mixture into the grain receiver. The surface of the blade 4 is made in a curved shape. The curvilinear shape of the blade surface 4 is formed by moving a segment straight from the axis of rotation of drum 1 along the radius of disc 3 and perpendicular to it with a proportional decrease in the angle between this straight and the plane of disc 3. Blades 4 are mounted on disk 3 in a checkerboard pattern relative to the blade m 4 located in the same gap on the opposite disk 3.

The device works as follows.

While moving across the field, the drum 1, along with the shaft 2, rotates along the arrows

Ke B and discs 3 sever the standing stems into longitudinal rows that enter zone 6 and further into the threshing gap between the discs 3.

In the gap between the discs 3, the stems fall under the impact impact impact of the blades 4 fixed to the discs 3, moving together with the discs 3 upwards relative to the stems and producing threshing grain. The grain mixture after acting on the stems of the discs 3 with blades 4 is moved to the zone from where it moves to the grain receiver. Due to the fact that the blades 4 are made of a curvilinear shape, a constant impact of the blades 4 on the stems is ensured, resulting in a complete threshing of the grain and reducing its damage.

Claims (1)

Invention Formula A device for threshing agricultural plants at the root, containing a drum with a casing, made in the form of a shaft with discs and curvilinear blades placed on them, characterized in that, in order to reduce grain losses, the surface of each blade is formed by moving a straight, perpendicular the radius of the disk, along this radius from the axis of rotation, with a proportional decrease in the angle between the direct and the plane of the disk. Phi. 2 Type A Fig.Z