DE1877754U - COMBINE WITH CLEANING. - Google Patents

Description

Patent attorney _Λ _ ■ _ « _{n π} η 1 C Cl

Karl α. B'rose P.A. 37 2 793 * - f. B. b 6

Dipl.-Ing. ■

Munich-PullGeh Munich-Pullach, June 7, 1963

WianerStr. 2 part. Munich 790570

Epple - Buxbaum - Werke Aktiengesellschaft in W e 1 s O.Ö.

Combine with cleaning

In order to meet the need for better cleaning of the fruit or for better separation of the fruit and the chaff in the sieve box of a combine harvester, it has already been proposed to increase the capacity of the cleaning stage with particularly large sieve surfaces. Is optimal but as the! Performance of the screen box only if the entire screen surface is equal to well attended m- swept by the wind power of interacting with the screen faces pressure wind turbine, either the magnification of the screen surfaces set such a limit that it does not bring any satisfactory improvement , or the performance of the pressure wind turbine must be increased. Larger screen areas, which also result in a larger screen box, and a larger pressure wind system, however, make the manufacture of the combine harvester considerably more expensive.

The innovation aims at cleaning the fruit in a simple way while maintaining the same performance of the pressure wind system to improve and consists in the essence that in the area of Wind flow of the pressure wind turbine arranged in the screen box Sieve group an up and down rake or an up and down

A swinging sieve, preferably a rabbit sieve, is connected upstream «λ

By, the gate switch of the rake or sieve in front of the sieve group With the combine harvester according to the innovation, this is done in a strong current flowing grain-litter mixture. before it is on the upper sieve of the sieve group reaches, loosened by the up and down rake or sieve in such a way that a large part of the light chaff particles is immediately caught by the pressure wind and blown out. Through this the grain can already be separated out in the front part of the upper sieve and it is thus with the dimensions unchanged upper sieve achieves a higher sieve performance than with an extended sieve «

For other characteristics of the wage, the rake or that is enough Sieve up over the top sieve and is the distance between the tines of the Rake or the mesh size of the sieve above the drainage floor up to the upper sieve smaller than above this. Through this Measure is achieved that only grains and small chaff pieces fall through the rake or sieve and to the drainage floor Can reach the top sieve.

In the drawing is an embodiment of the control object shown schematically. Fig.l shows the Screen box of a combine harvester and one of the screen groups upstream Rake, Fig.2 a section along the line H-II in Fig.l and Fig.5 the rake in top view and enlarged scale.

As shown in Fig. 1, an up and down rake 3 is provided above the sliding plate 1 of the drainage floor 2, which extends over the upper sieve 4 of the sieve group 6 arranged in the sieve box 5 and lies in the area of the wind flow generated by the pressure wind turbine 7.

The up and down swinging of the rake is caused by the back and forth movement of the sieve box in the direction of the arrow. For this purpose, the rake according to Figs one ends of levers 9 are attached. These are hinged at their other ends to bolts 11 provided on the only partially shown frame of the mower, which engage in elongated holes 12 arranged on the levers, so that a vertical oscillation of the rake is also possible. So that the axis 8 can join in the reciprocating movement of the sieve box, corresponding cutouts 13 are provided in the frame 10 (Fig. 2). During the reciprocating movement of the sieve box, it takes the axis 8 of the rake 3 and the lever ends attached to the axis with it, whereby the lever 9 is pivoted about the bolts 11 and the rake is pivoted up and down to loosen the Eorn chaff mixture.

As can be seen in Fig. 3, the rake is alternated with short ones Prongs 14 and long prongs 15 are provided. The short prongs are enough only over the slide plate 1 of the drain tray 2 and the long ones Prongs over the slide plate to over the top sieve 4 * This If the distance between the prongs is smaller above the slide plate than above the top sieve, so that only grains and small ones Chaff down on the slip tray and can get to the upper sieve. Instead of the rake, a sieve can also be used that: im The area of the slide sheet has a smaller mesh size than above the upper sieve. -

Claims (1)

- ■ ♦ ■ - ■■ P.A. 372 793-7.6.63 Protection claims s 1 «combine harvester with agreement, characterized in that im Area of the wind current of the bridge wind turbine in the screen box arranged sieve group an up and down swinging rake or an up and down swinging sieve, preferably a laser sieve, is connected upstream. 2φ combine harvester according to claim;!, Characterized in that the Eechen or the sieve is mounted in the reciprocating sieve box by means of an axle and lever attached to the ends of the axle ^ on the frame of the mower for converting the reciprocating. moving sieve box movement in the upward and downward swinging movement of the Eechen or sieve are provided. 3. Combine harvester according to claims 1 and 2, characterized in that that the Eechen or the sieve to over the upper sieve of the Sieve group is enough and the distance between the tines of the Eechen or the mesh size of the sieve above the drainage floor up to to the upper sieve is smaller than above the upper sieve Vienna, at Epple-Buxbaum-ferfee Corporation by J.