SU843842A1 - Rough hear separator of grain combine - Google Patents

Description

one

The invention relates to the field of agricultural engineering, in particular to a coarse heap separator for a combine harvester.

The coarse heap of a combine harvester, made in the form of a keyboard walker 1, is known.

However, an increase in the productivity of a combine harvester entails the further development of its parameters, mainly due to an increase in the length of the keyboard walker.

A coarse pile separator is known, made in the form of a combination of a straw walker with a bar or finger agitator mounted above it 2.

However, the use of a bar agitator, installed directly above the straw catcher, is completely unacceptable in a combine harvester equipped with a mounted hopper, and is ineffective when installing the agitator over the straw straw because of the cross-cutting of the process of pressing the coarse heap before entering it into the camera, before applying it to the camera, before he gets into the camera, before he gets into the camera, before he goes to the camera, he will have to use the coarse heap before putting it into the camera.

Closest to the invention is a coarse heap separator containing a keyboard straw walker and a sieve installed behind it, forming it, with a palmar comb and side walls of the thresher body of the precompactor of the palmetrebel solomonabivatel.

However, shining in the secondary, the value of grain losses in straw, this device, however, does not have a significant effect on the change in the separation process, and consequently, on the amount of loss reduction.

The aim of the invention is to reduce grain losses.

This is achieved by the fact that the separator is equipped with at least one additional finger comb, which is parallel to the main and connected to the drive, and the sieve is equipped with longitudinal vertical ridges that are located between the fingers of the combs, and that the main and additional finger combs are installed at a distance excluding the intersection of the trajectories of rotation of their fingers, and the height of the longitudinal crests of the sieve in the zone of the trajectory of movement of the fingers of the combs is greater than in the free zone.

Claims (3)

FIG. 1 shows a longitudinal section of a thresher of a combine harvester, a side view of a coarse heap separator; in fig. 2 shows section A-A in FIG. 1, front view of the separator; in fig. 3 is a diagram of the movement of portions of a coarse heap in a free zone formed by two rows of fingers of the finger-robber mechanism. The coarse heap separator contains a body 1 (Fig. I) with two rows 2 and 3 fingers of 4 combs and a perforated or louvered sieve 5 mounted under them. A row of 2 and 3 pallet combs have the same number of fingers 4 and are installed with the possibility of rotation of their ends along separate non-intersecting trajectories m 6 and 7 with the formation of a free zone 8 between them. The finger combs are equipped with a drive (not shown) giving the ends of the fingers 4 of both rows 2 and 3 a linear speed of movement greater than the speed of the coarse pile input it into contact with the fingers of the first row 2 of the comb fingers. The sieve 5 is installed in the housing 9 of the combine stationary. A number of ridges 10 according to the number of fingers 4 in rows 2 and 3 is installed on its surface facing the palmetreable mechanism. The ridges 10 of the sieve 5 are made of variable height along the length of the ridges 10. Their height in the zones bounded by the paths 6 and 7, the movement of the ends of the fingers 4 evenly increases, and in the free zone 8 decreases. In the transverse direction to the movement of the coarse heap, the ridges 10 (see Fig. 2) are located boldly with the fingers 4 when they are in the lowest position. The invention is not limited to the described embodiment of the coarse separator. The specified senator can be used in a combine harvester in combination with a keyboard straw walker AND (see Fig. 1) or include not two, but a larger number of rows rotating along circular trajectories of fingers 4. As shown in Fig. 2, each of the rows of fingers 4 may be made up of two or more sections 12 and 13 in the row. With equal success, the proposed separator can be used in a combine harvester equipped not only with a hopper (not shown in the drawing), but also with other devices for processing straw. When combined with the proposed coarse separator separator with the straw walker And on the keys 14 of the latter, bar bars or combs 15 can be set back, in the rearmost position, located in the action zone of fingers 4 of the first row. The fingers 4 can be moved visually, either separately with different linear speeds, or with the same speed and one drive mechanism. In the latter case, crankshafts 16 and 17 can be connected by a bar 18. During the operation of the combine to harvest grain crops coming out from under the threshing drum (not shown) in a continuous flow, a coarse pile is sent to the zone of the first row 2 (see Fig. 1) comb fingers. Upon reaching this zone, as shown in FIG. 3, the fingers 4 of the first row 2 separate the portion of the coarse heap and at a speed greater than the speed of its movement before (as a result of which it is compressed), is sent to the free zone 8, where it is after release from the fingers, not only it is braked by ridges 10 of the sieve 5, but spontaneously fluffs under the action of the elastic forces of the straw. Submission to this zone of a subsequent batch of coarse heap leads to re-compression of the first portion in a short-term relative rest portion, followed by its fluffing under the action of the elastic forces of the straw. Thus, while the portion of the coarse heap continues to be in the free zone 8, it is continuously subjected to multiple pulsating effects on it of the fingers 4 of the first row of 2 through subsequent portions of the coarse heap, followed by compression and disbanding of the coarse heap. Reaching fingers 4 of the second pitch 3, portions of the coarse heap are brought out of the free zone, freeing up space for new portions. As experiments have shown, such an effect on the coarse heap flow at the moments of its fluffing in the free zone 8 leads to the most intensive release of grain from straw, much more than with the usual mechanical action on it by, for example, shaking on a keyboard walker in combination with various kinds of agitators or without them. Claim 1. A coarse heap separator for a combine harvester comprising a sieve over which a powered comb is located, characterized in that, in order to reduce grain losses, it is equipped with at least one additional finger comb that is parallel to the main and back The screen is equipped with longitudinal ridges, which are located between the combs' fingers. 2. A separator according to claim 1, characterized in that the main and additional finger-type combs are mounted at a distance excluding the intersection of the trajectories of rotation of their fingers. 3. Seiarator according to claim 1, characterized in that the height of the longitudinal crests of the sieve in the zone of the paths of movement of the fingers of the combs is greater than in the free zone. Information sources, taken into account in the examination 1.Izakson X. I. “Combine harvesters“ Niva and Kolos - Moscow .: Kolos, 1974, p. 105, fig. 105 2. US patent number 3620223, cl. 130-22A, 1971. 3. USSR author's certificate number 244766, cl. A 01D 41/12, 1968.