CS243237B1 - Equipment for improving the work of sieve cleaners on the slope - Google Patents

Abstract

The device is intended for synchronously leveling the cob screen and the perforated screen of combine harvesters on a slope. The upper frame cob screen and the lower frame perforated screen are connected together by at least one articulated rod and are hinged by means of a tilting linear motor to the sliding frame. The latter is mounted on at least one guide track of the swinging crossbar by means of at least one guide knife.

Description

BACKGROUND OF THE INVENTION The present invention relates to an apparatus for improving the performance of screen cleaners on a slope.

So far, combine harvesters are mostly designed to work on flat or gentle slopes. With a greater slope on the slopes, the work of the screen cleaners significantly worsens and results in relatively large harvest losses. They are due to the fact that due to the inclination of the machine, the material accumulates on the lower side of the cleaners, creating a higher layer of material and the seeds cannot reach the working surface of the cleaners, so that part of it does not fall. This deteriorates the quality of work when the machine is tilted laterally. When driving on or off a slope, the braking or acceleration of the material flow through the sieve cleaners is accelerated and the work quality also suffers. Machines that are designed to work on a larger slope are costly due to demanding construction work and become uneconomical to work on flats or smaller slopes. It is not yet known to provide a usable solution for improving the work of the combine screen cleaners on a slope at the cost of minimal acquisition costs.

The device for improving the performance of screen cleaner harvesters on a slope according to the invention removes these disadvantages and drawbacks. it is characterized in that the upper frame cob screen and the lower frame screen are connected by at least one articulated rod and are articulated by means of a tilting linear motor to a sliding frame which is supported by at least one guide knife on at least one guide track of the pivot bar.

The device for improving the performance of screen cleaner harvesters on a slope according to the invention is structurally simple and very reliable in operation. By leveling the sieves to the desired position, the quality of the combine harvester work on the slope is improved.

An exemplary embodiment of the device according to the invention is shown schematically in the accompanying drawings, in which Fig. 1 is a side view of the device, Fig. 2 is a plan view, and Fig. 3 is a rear view.

The combine harvester (not shown) is provided with a threshing drum 1 with a threshing basket 2, behind which the shakers 3 are provided and a stepped oscillating plate 4 is arranged below them. The upper front ball joint 5 is arranged one above the other. an upper frame sieve 8 and a lower front ball joint 9 through which the lower frame perforated sieve 11 is connected to the machine frame 7, connected to the upper frame sieve 8 by at least one articulated rod 13. In the rear, the upper frame sieve 8 is provided with an upper rear The two rear ball joints 6, 10 are arranged on a sliding frame 14 provided with at least one guide bed 12, which is supported on at least one guide track 15. This is connected to by a pivoted crossbeam 16 mounted by means of side guides h of pins 17 and bearings 18 in frame 7 of the machine. A lifting linear motor 19 is arranged between the pivot bar 16 and the sliding frame 14, and a tilting linear motor 20 is arranged between the sliding frame 14 and the bottom frame perforated screen 11 and the upper frame ear screen 8, respectively.

The device according to the invention functions as follows:

By tilting by means of a lifting linear motor 19, an alignment of both the sieve 8 and the perforated sieve 11 in the front-rear direction is achieved. Lateral tilting by means of a foldable linear motor 20 achieves the alignment of the sieve 8 and the perforated sieve 11 in synchronization with it on the side slope.

Claims (1)

SUBJECT Apparatus for improving the work of the combine harvester sieve on a slope, equipped with ball joints at the front and rear on screens, of which the rear ball joints are attached to lift the sliding frame, characterized in that the upper frame ear screen (8) and the lower frame screen (11) are connected by at least one articulated rod (13) and articulated by means of a tilting linear motor (20) to a sliding frame (14) which is supported by at least one guide bed (12) on at least one guide track (15) of the pivot cross member (16) and coupled to a lifting linear motor (19).