Harvester threshers

The invention relates to a combine harvester with a working according to the Axialflußprinzip separating device, the two adjacently arranged, having each a separator housing is surrounded in opposite directions umlaufbare rotors with which crop spirally through the separator housing can be moved in the form of a mat, which is located upstream to in a joint consisting of continuous, rotors partially cylindrically surrounding sidewalls feeder housing having an inlet port extend, the rotors at the inlet port side remote from the one half of the upstream, a transverse end plate having feed housing are surrounded and the other half of the intake housing by a respective semi-cylindrical, the rotors is formed surrounding at least partially part, being provided in two halves of the intake housing guide ribs such that the checked through the inlet port crop can be brought into the semi-cylindrical, at least partially surrounding the rotors of the catchment housing by about half a rotation of the rotors ,

It is already a combine harvester known which operate according to the Axialflußprinzip separation devices comprising (EP-A-0173224), in which two mutually parallel rotors are arranged through which the crop material is moved by means of intermittently acting fingers through the separation device. In the front area of ​​the separation device is an upwardly open inlet port, which is fed via a threshing and a kick drum with crop.

In the known harvester (EP-A1-0 173 223), from which the invention proceeds, two inlet ports are provided which are indeed formed also triangular, but rest with their tip on the central longitudinal axis of a respective rotor, wherein the region between the rotors is covered.

In contrast, the present invention seeks to form laid down in the two separating housings inlet opening for receiving the discharged from the threshing harvested crop such and to order that a low friction loss, the crop is directed into the gap in the two counter-rotating rotors. This object has been solved by the aforementioned semi-cylindrical, at least partially surrounding the rotors parts of the intake housing each have only one free edge, which together with the end plate, the inlet port and with respect to the conveying direction of the separator lying from their upstream lateral ends to a downstream point substantially triangular converge.

In this way, a single substantially triangular extending inlet opening is provided, which is thus designed to be relatively wide at its front end and extends far to the rear, so that the incoming goods can be easily detected by a considerable length of the feeder between the counter-rotating rotors. The inlet port works with the guide ribs together such that the detected by the rotors Good is not recirculated back into the intake port, but is already out so far by about half a turn downstream, that it is or in the enclosed area of ​​the catchment separating housing is. The sloping edges of the intake opening together lead the incoming crop material flow and favor the simple capture of the goods by the counter-rotating rotors.

The feeding of the material between the rotors according to another proposal of the invention improves, if it is provided in the intake housing between the rotors a partition.

In detail, may lie in the vertical plane of the partition wall according to the invention, the downstream point of intersection of the formed by obliquely cutting edges of the other semicylindrical half of the intake housing.

The detection of the goods by the rotors is further facilitated if further the collection part of the rotors has two downstream and downwardly inclined extending plates intersecting the sloping edges, each plate is adjustable and extends into the cylindrical feeder housing.

Continue feeding the crop material flow improvement measures are the subject of the remaining dependent claims.

In the following the invention is explained in detail with reference to illustrative of several embodiments drawings. Show it:<dl id="dl0001"><dt>Fig. 1</dt><dd>a schematic representation of a combine harvester, that operates on the Axialflußprinzip,</dd><dt>FIG. 2</dt><dd>a partial view of the threshing with extending axially separating device,</dd><dt>Fig. 3</dt><dd>the catchment area of ​​the separator in the view from the front,</dd><dt>Fig. 4</dt><dd>the catchment area of ​​the separator in the top view,</dd><dt>Fig. 5</dt><dd>a driving device of the two adjacent separating drums of the separation device, </dd><dt>Fig. 6</dt><dd>a perspective view of a separating drum,</dd><dt>Fig. 7</dt><dd>a view along the line 7-7 in FIG. 2,</dd><dt>Fig. 8</dt><dd>a partial cross section taken along line 8-8 of FIG. 7,</dd><dt>Fig. 9</dt><dd>a further embodiment of the separating drum, as in Fig. 7,</dd><dt>Fig. 10</dt><dd>a further embodiment of the separating drum, as in Fig. 8,</dd><dt>Fig. 11</dt><dd>a further embodiment of the upper part of the feed zone, similarly as in Fig. 4,</dd><dt>Fig. 12</dt><dd>a view along the line 12-12 in FIG. 4,</dd><dt>Fig. 13</dt><dd>a cross-section taken along line 13-13 in FIG. 2.</dd></dl>

In the drawing, with 10 a combine harvester designated, which operates on the Axialflußprinzip and the two front driven wheels having 12 and two rear steerable wheels 14, which are controlled by an operator in an operator's cab 16 at the forward end of the combine 10th

The crop material is picked up by means of a crop gathering device 18, which is arranged at the front end of the harvester and to which a vertically pivotable inclined conveyor housing 20 belongs, on the crop a threshing drum 22 and a concave 24 is supplied.

Downstream from the threshing cylinder 22 is a pull-in member 26 is provided, which belongs to Gutmittelversorgung a separator 28, which is provided at the end with a discharge part the 30th The precipitated or separated crop material from the separation device 28 is fed via two return conveyors 32 and 34 of a cleaning device 36th From the cleaning device 36, the harvested material via corresponding passes in the drawing, conveying devices not shown further to a collecting container 38. The collecting container accommodated in the harvested material can be discharged with a Austragfördervorrichtung 40th The collection part 26 and the separator 28 are composed of two juxtaposed, symmetrical elements. In the following description, only the left one element is described in detail.

As is apparent from Figures 2, 3 and 4, the separation apparatus 28 of right and left separating unit 50 and 52. In the left-hand separator 50, the lower part of a separator housing 54 of a separating concave 56, and are in the upper part of the separation housing, numerous juxtaposed, helically arranged guide ribs 58 are provided. In the right and left separator housing 54 store rotors 60 and 62, which rotate about mutually parallel axes 64 and 66 thereof. The two mutually identical rotors 60 and 62 are composed of three main parts, which differ in the arrangement and function. Namely, the rotor 60 of a front part 68, a feed part 70 and a separating part 72nd

The main component of the feeder portion 26 consists of a feeder housing 80, whose downstream end is determined by the beginning of the separator basket 56 of the separation unit 50th Before moving housing 80 is a guide roller 82 and a kick drum 84, which cooperates with a guide plate 86th The lower half of the upstream end of the intake housing 80 is limited by an end plate 88 whose upper edge is limited by a transverse, u-shaped support 90th The upstream lower part 92 of the feed housing 80 tightly surrounds the front part 68 and then gradually changes into an upwardly curved arc portion and a bead, 94th The main section 96 of the lower half of the intake housing 80 is semicircular formed with an elevated central axis. Thus, a closed stage 98 or a shoulder is formed between the part 92 and the adjoining main portion 96th Further, a relatively small step at the location 100 between the feeder housing 80 and the partition housing 54 consists, as the main part 96 is offset with respect to the inner surface of the separator basket 56th

As shown in Figure 3, the upper left portion 102 of the intake housing 80 is also semicircular and adjoins the main part 96 and the separator housing 54th The semicircular upper part 102 runs obliquely from upward and thus has a diagonal edge 104 which extends from the downstream end of the front portion 68 to the center line to a corresponding edge 106th As is apparent from Figure 12, a terminal plate 108 is connected to the part 102, the downstream seen is inclined and abuts the edge 104 and thus an upper horizontally extending edge forms 110th The left and right edges 110 and 112 of the cover and the transverse, downwardly disposed edge 114 of the guide plate 86 and the front transverse plane of the intake housing 80, which is formed by the end plate 88, form an isosceles top 116 and in the catchment area 119 an inlet port 118. The triangular portion 116 is covered by an upper plate 120th

The feeder housing 80 is divided in the center by a vertically extending partition 121, which has a slightly tilted backwards extending end edge 122 which extends close to the downstream side of the front part 68th Numerous guide ribs 124 are disposed on the inside of lower main portion 96 and extend over approximately 180 °. The inner cylindrically shaped surface, which is formed by the ribs 124, is on the same level as the inner surface of the separator basket 56. A smaller number of guide ribs extending over an angle of 90 ° and is located in the upper part of the housing with a upstream guide rib 126 in the area of ​​edge 104 and a downstream guide rib 128 which extends into the separator housing 54th

The rotor and the separation drum 60 has an upstream shaft 130 which is received in the carrier 90 by a bearing 132nd The internal combustion engine not shown in the drawing of the combine 10 drives an input shaft 134 to (Figure 5), which is connected by a left and right angle gearbox 138 and 136 with the two shafts 134 (Figure 3). The rotor 60 consists of a frame 140, which consists of four parallel, rectangular-shaped tube carriers 142 which are held together by plates 144th The front part 68, which divides the crop material flow into two part streams, consisting of two opposite paddle arms 148, which are connected by means of brackets 150 to the frame 140 and are diametrically opposed. At the outer ends of the paddle arms conveying elements 152 are provided, extending from two in the longitudinal direction of the rotor, diametrically opposed plates 154, 156 are made. Each plate 148 is arranged with respect to the surface of the paddle arm extend a little inclined, and thus forms a conveying surface for transporting the crop.

At the Paddelarm 148 to close more identical Erntegutbeförderungselemente to 160, which are arranged in the Beschikkungsteil 70 and in the separator 72 of the rotor 60th Each Erntegutbeförderungselement or crop processing element 160 is connected by means of a pivot pin 162 to the frame 140 pivotable so that it can be pivoted in a plane which is parallel to the axis 64 of the rotor 60th The downstream end of the partition member 72 is made Austragförderelementen 164 bounded at the end of the rotor 60 by a faceplate 166th The Austragförderelemente 164 and the end plate 166 can be arranged centrally to the axis of the rotor 60th

As shown in Figures 7 and 8, the blow drum 84 of a cylinder tube 170, are arranged on the same four blow bars 172nd The hammers 172 are inclined to extend with respect to the rotational direction to the rear, while the associated supporting plate facing forward. As shown in Figure 7, the blow bars are 172 ends rounded back and equipped with a backward sloping part of 176th In the central region of the blow bars 172 which extend across the entire width of the rotor 60, these are provided with a v-shaped indentation 178th In a further embodiment according to the figures 9 and 10 the blow drum also has a cylinder tube 170 'on which are arranged four blow bars. The outer ends of the blow bars are also provided with a rounded portion 176 '. Similarly, the blow bars are equipped with a V-shaped indentation 178 in the central region. As shown in Figure 9, the rasp bars portions 174a and 174b have different lengths, so that in each case the second blow bar subsequent blow bar in the central region overlaps, which is indicated by the parts 178a and 178b. It follows also that the indentation 178 is compared with the subsequent indentation 178 laterally offset.

In another embodiment shown in FIG 11, the feeder housing 180 is modified from the feeder housing illustrated in Figures 2, 3 and 4, namely the slightly conical upper part 102 is replaced by a trapezoidal shape like inlet zone. The entire length of the catchment area is approximately the same as the feed zone according to the first embodiment, in which only the total volume of the latter embodiment is slightly larger. The guide ribs 126 'and 128' corresponding to the guide ribs 126 and 128th

The discharged from the threshing cylinder 22 harvested material is fed through the feeder section 26 to the two adjacent rotors 60, 62nd The guide roller 82 and the blow drum 84 support the conveying effect of the crop in the feeder housing 80. Also, the guide plate 86 supports the flow of material as it passes at a high speed in the intake area 119 on the front part 68 and the feed portion 70th The division of the crop material in two separate crop streams carried by the partition 121. The V-shaped bulge 178 supports the distribution of crop material into two separate crop streams as well as the accurate recording of the two separators 50, 52. The hammers 172 and the parts 176 and 176 'push the crop flow from the outside to the middle of the triangle-shaped catchment area and thus into the feed zone 119th

Inward converging guide ribs 202 and 203 on the guide plate 86 support the flow of material at this point. The guide ribs 202 and 203 cooperate with the blow bars 172 of the blow drum 84th A portion of the crop, which enters the intake area 119 is detected by the aggressive conveying elements 152 of the front portion 68 of the rotor 60 and directed to the rear. The relatively greater radial reach of this rotor region in conjunction with the conveyor elements 152 causes a flawless transition of the crop flow from the threshing to separation apparatus. The collected crop is moved into a gap 204 between the two rotors 60, 62, the end edge 122 of the partition 121 performs a division of the crop flow. The bead 94 between the two rotors 60, 62 supported the allocation process the crop material flow, since in this area, the dead space between the rotors is greatly reduced, so that at this point no material remains lying. The plates 154 and 156 of the conveying elements 152 cause a proper discharge of the crop material. The Erntegutbearbeitungselemente 160 shall cooperate with those foreseen in the housing guide ribs and guide the crop spirally through the separator housing, until it reaches the lower part of the Austragteiles 30 and moved there to the outside. The triangular-shaped feed zone in the upper catchment area 119 allows the main current of the incoming crop that it comes directly to the feeder portion of the rotors into contact, through almost the entire length of the feed portion or the gap 204 between the two rotors. As shown in Figure 4, the incoming crop is directly detected by the Erntegutbearbeitungselementen 160, wherein the conveyor elements 152 also detect the crop in the front region of the separating drum and pass it backwards. In this operation, the crop is at a half revolution moves from the lower guide ribs 124 to the rear and upwards until it reaches the inner surface of the feed housing 80 and the part 102nd In conjunction with the guide ribs 126 and 128 proper control of the crop is ensured within the collection part and causes a spiral movement of the crop material through the separator housing 54th The guide ribs 126 and 128 are further complemented by an adjustable plate 210 (Figure 12), which is connected by bolts 212 to the part of the 102nd The rear wall or the step 98 between the front part 68 and the feeder housing 80 is perpendicular to the part 92 and the main portion 96. The stage 98 may also be formed to improve the transition in these two housing parts inclined running. The collection of the crop material flow can be improved by the fact that the adjustable down plate 210 is connected to the terminal plate 108 (Figure 12). The extension thus formed through the plate 210 and the terminal plate 108 can be adjusted accordingly depending on the Erntegutbeschaffenheit or bulk flow, so as to ensure a good receipt of the crop in the separator housing. Further, it contributes to the fact that the already transported to a rotation crop remains inside the housing.

In Figure 13, a further possibility for controlling the crop flow is illustrated. It shows the insertion zone 220 between the housing wall and the separating drum, in which range a relatively large gap between the housing inner wall and the surface of the separating drum is made, while in the lower region in the section A and B of the gap between the separating concave 56 'and the tips 222 the Erntegutbearbeitungselemente is relatively small and then increases towards the bow from. This is a proper control or promotion of crop flow and a perfect feed on the left side, ie in the area of ​​the feed zone, achieved whose gap is greater than on the right side between the separating drum and the separator basket 56 '. This can be avoided even blockages in the intake area or the separating basket 56 '.

The advantageous arrangement of the separating drum with the associated Erntegutbearbeitungselementen also air is forced in the direction of Erntegutflußstromes whereby the Erntegutbearbeitungselemente be supported in the release effect and the Austragförderelemente 164 in Austragsförderung.