HU180754B - Guide drum for combines - Google Patents

Abstract

The combine harvester has a separator drum (5) behind the threshing drum, designed for improved efficiency in removing the corn from the straw and delivering the straw to the shaker below. This drum (5) has radial plates (8) mounted in a polygonal arrangement with their ends (9) protruding. These are combined with toothed plates (10) mounted on edge. Each line of toothed plates is staggered against the plates in the next row along the drum, dividing the radial plates into staggered compartments around the periphery of the drum. In an alternative design, instead of toothed plates, rows of single teeth are attached to the edges of the protruding parts of the radial plates, in a staggered pattern.

Description

Guide drum for harvester threshing machines

BACKGROUND OF THE INVENTION The present invention relates to a guide drum for harvesting threshing machines, which is located downstream of the threshing drum for transporting straw and for additional loosening of the seed straw.

One or more guide drums are positioned on the breasts of the threshing drum to deliver the harvested crop from the drum basket to the straw shaker. Various designs of such guide drums and their various positions are known.

Thus, for example, German Patent No. 1,113,328 discloses a threshing device having a guide drum having casings having substantially longitudinal openings and a triangular cross-section. The rear boundary walls of the bags rise from the tip of the bag and extend beyond the direction of rotation of the guide drum. Due to this wing situation, the transport effect of the guide drum is unfavorable under unfavorable crop conditions, which prevents the straw from being transported to the straw shaker in a reliable manner and can also cause a (reeling) phenomenon.

In addition, German Patent No. 1,192,441 discloses a threshing device having, after the threshing drum, a rotatable cylindrical drum having circumferentially disposed gear elements for removing and deflecting the pruned crop so that the teeth are rotated in the direction of the teeth. generally have flat surfaces which are inclined at an angle to the axis of rotation. The teeth are arranged in rows extending about half the width of the drum and inclined relative to each other and the drum axis.

However, this design acts as a closed drum due to the high speed required and thus the tooth elements cannot perform their function. As a result, the desired loosening of the straw-core material is not achieved by the action of the teeth.

Similar disadvantages occur with the solution described in Czech Patent No. 151,618, which utilizes a cabinet-like guide drum with raised fingers.

Czech Patent No. 152,741 discloses a structure which uses a disc drum disposed after the threshing drum for selecting seeds from a mixture of straws, which have toothed discs, which are spaced axially spaced from one another and formed by several corners. While this solution can achieve loosening of the crop, the desired separation cannot be achieved by colliding with the wings of the drum.

The object of the invention is to improve the transport and separation process between the threshing drum and the straw shaker.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a circumference of a guide drum between a threshing drum and a straw shaker, which allows the crop to be sufficiently loosened and continuously transported to the front of the straw shaker and to optimally separate the seeds.

SUMMARY OF THE INVENTION The present invention solves the object by providing a guide drum for use in reaper threshing machines, wherein the toothed laths extending perpendicular to the wings and perpendicular to the outer circumference of the guide drum, and each tooth is spaced apart and offset relative to.

The guide drum according to the invention makes it possible to loosen the crop coming out of the drum basket. As a result, seed separation in both the pre-straw shaker and the straw shaker is improved and losses in the straw shaker are reduced.

The guide drum of the present invention for use in reaper threshing machines will be described in detail with reference to two exemplary embodiments outlined in the drawings.

Figure 1 is a longitudinal schematic sectional view of the threshing device and guide drum.

Figure 2 is a schematic diagram of a guide drum 15 having toothed slats.

Figure 3 is a side elevational view of the guide drum of Figure 2.

Figure 4 is a schematic diagram of an exemplary embodiment of a guide drum having individual teeth mounted on the outer surface of the guide drum.

Figure 5 is a side elevational view of the guide drum of Figure 4.

The harvester threshing machine shown in Fig. 1 reaches the structure of the threshing machine 1 from a feed channel 1 between a drum basket 3 and a threshing drum 4 over a stone trough 25.

After the threshing process, the crop flows to the salin shaker 7 between the guide drum 5 and the outgoing rake 6. On the wings 9 of the guide drum 5, which act as stop surfaces 8, there are disposed ribs 10 extending in the rotational direction (Figures 2 and 3) and individual teeth 11 (Figures 4 and 5). These toothed ribs 10 and individual teeth 11 are spaced about 20 to 200 mm apart over the entire guide drum width and are offset relative to one another on each numeral section. Their height is chosen so that they do not stretch.

beyond the outer circumference of the guide drum 5 formed by the protruding wings 9 and approximately equal in height.

Claims (1)

A guide drum for harvesting threshing machines, which is located downstream of the threshing drum and used for transporting straw to a straw shaker and for further separating the seeds and straw 20, characterized in that it extends perpendicularly to the abutment surfaces (8) of the wings (9) and (5) the toothed ribs (10) and the individual teeth (11) within the outer circular diameter are spaced apart and spaced relative to one another over the entire width of the guide drum.