CN105325132A - Tailing screen and combine harvester with the same - Google Patents
Tailing screen and combine harvester with the same Download PDFInfo
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- CN105325132A CN105325132A CN201410328632.0A CN201410328632A CN105325132A CN 105325132 A CN105325132 A CN 105325132A CN 201410328632 A CN201410328632 A CN 201410328632A CN 105325132 A CN105325132 A CN 105325132A
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- sieve
- son sieve
- tail sheet
- screen size
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Abstract
The present invention provides a tailing screen (5) of a combine harvester. When the combine harvest works, materials flow past the surface of the tailing screen and are screened, the tailing screen comprises two or more sub-screens (5A, 5B and 5C), and the sub-screens are arranged according to the size of screening holes of the sub-screens from large to small along a direction perpendicular to a flow direction of the materials. With adoption of the tailing screen of the above structure, adequate processing performance of the tailing screen can also be ensured under the situation where flow distribution of the materials are uneven on the tailing screen, thereby reducing losses of crop grains. A combine harvester with the improved tailing screen is also provided.
Description
Technical field
The present invention relates to a kind of tail sheet and there is the combine of this tail sheet.
Background technology
Combine, in its course of work, needs to further process the material after installed threshing separator process, this further process typically to mixing crop kernel and being separated more than mixing.The cleaning plant that usual utilization is arranged on below installed threshing separator cleans separation to material.Should ask screening device typically involving vibrations sieve, this vibratory sieve at least comprises interconnective main sieve and tail sheet.By the vibration of vibratory sieve, the difference of physical property between each component by material is utilized they to be separated.Should screening device to the Crop damage rate of combine, clean rate to such an extent as to feed quantity all tight association.In existing grain header, material perpendicular to its flow direction not being enter tail sheet with uniform flow, but enters tail sheet in the side of tail sheet with comparatively large discharge, and enters tail sheet at the opposite side of tail sheet with a relatively little flow.Cause tail sheet thus and fully cannot isolate crop kernel contained in material in the side that its material influx is larger, thus add the Crop damage rate of combine.
Summary of the invention
The object of the invention is to solve the problem at least in part.For this reason, the invention provides a kind of tail sheet for combine, when this combine works, material flows through the surface of described tail sheet and screened, and this tail sheet comprises two or more height sieve, and this direction vertical with Flow of Goods and Materials direction, a little sieve edge arranges; Each described sub-sifter device has respective screen size, and on the direction vertical with Flow of Goods and Materials direction, described multiple son sieve is according to the order arrangement from big to small of its screen size.Above-mentioned structure can uneven in the influx that material enters tail sheet, the side receiving large influx material for tail sheet provides enough screening capacities, reduce grain loss.
Present invention also offers multiple preferred tail sheet structure.
In a preferable configuration, tail sheet can comprise the first son sieve and the second son sieve, and wherein the screen size of the first son sieve is less than the screen size of the second son sieve, and the cover surface of the first son sieve is greater than the cover surface of described second son sieve; Described first son sieve can select various suitable sieve type, such as, it can be the adjustable lip(ped) sieve of scale aperture, and the second son sieve can be the sieve of any appropriate with larger screen size (i.e. screening area), can be such as lip(ped) sieve, also can be the sieve be made up of the sheet material of the multiple band sawtooth extended along Flow of Goods and Materials direction.
According to another preferable configuration of the present invention, tail sheet comprises the first son sieve, the second son sieve and the 3rd son sieve, wherein the screen size of the 3rd son sieve is greater than the screen size of the second son sieve, and the screen size of the second son sieve is greater than the screen size of the first son sieve, the cover surface of the first son sieve can be arranged to the cover surface being greater than described second son sieve, also be greater than the cover surface of the 3rd son sieve.
According to another preferable configuration of the present invention, tail sheet comprises the first son sieve, the second son sieve, the 3rd son sieve and the 4th son sieve, wherein the screen size of the 4th son sieve is greater than the screen size of the 3rd son sieve, the screen size of the 3rd son sieve is greater than the screen size of the second son sieve, and the screen size of the second son sieve is greater than the screen size of the first son sieve.
For above each structure, more preferably, observe along the direction perpendicular to tail sheet compass screen surface, the mass flow entering tail sheet reduces from the side of tail sheet gradually to opposite side, and the screen size being positioned at the son sieve of side described in tail sheet is greater than the screen size of the son sieve being positioned at opposite side described in tail sheet.
Present invention also offers a kind of combine, this combine has the reaping apparatus for gathering in crop, for carrying by the conveying plant of harvesting crop, for carrying out threshing to crop and the installed threshing separator be separated, and to the cleaning plant that crop kernel is cleaned, wherein, described installed threshing separator comprises cylinder and is positioned at the notch board below this cylinder, and described cylinder has the rotation being positioned at the perpendicular that front and back extend; Described cleaning plant comprises main sieve and is positioned at described main sieve rear and the tail sheet be connected with described main sieve, described main sieve and described tail sheet are positioned at the below of described notch board, material from described installed threshing separator flows through the upper surface of described main sieve and described tail sheet and screened successively, and this tail sheet is construct according to tail sheet mentioned above.
In this combine, preferably, the screen size of the son sieve near the screw-in side of described tail sheet is greater than the screen size that the son away from described screw-in side sieves.So-called " screw-in side ", can be understood as a certain threshing tooth on cylinder first close to the side of tail sheet pointed during tail sheet.
Accompanying drawing explanation
Fig. 1 schematically illustrates the end view of threshing and separating device of combine harvester and the cleaning plant with tail sheet;
Fig. 2 schematically illustrates the rearview of threshing and separating device of combine harvester and the cleaning plant with tail sheet;
Fig. 3 is the schematic diagram of an embodiment of tail sheet of the present invention;
Fig. 4 is the schematic diagram of another embodiment of tail sheet of the present invention;
Fig. 5 is the schematic diagram of another embodiment of tail sheet of the present invention;
Fig. 6 is the schematic diagram of the yet another embodiment of tail sheet of the present invention;
Fig. 7 is the schematic diagram of the another one embodiment of tail sheet of the present invention.
Embodiment
Exemplary embodiment of the present invention is described below in detail.What describe in literary composition is intended to instruct principle of the present invention with the exemplary embodiment shown in accompanying drawing, enables those skilled in the art in some varying environments and implements for some different application and use the present invention.Therefore, exemplary embodiment is not intended to and should be considered to the restricted description of the scope to patent protection.On the contrary, the scope of patent protection is limited to the appended claims.Should also be noted that accompanying drawing is not drawn in proportion, and the element of structure similar in whole accompanying drawing or function is represented by identical Reference numeral; And accompanying drawing is only the description for the ease of embodiment.
Fig. 1 schematically illustrates the installed threshing separator 1 of combine and the diagrammatic side view of cleaning plant, the tail sheet of the with good grounds the present invention's design of cleaning plant band wherein.In the figure, left side is the front of combine, and right side is the rear of combine, and in the face of the one side of reader is the left side of combine, the one side away from reader is the right side of combine.In the application comprising claim, the "front", "rear" mentioned, " left side " and " right side " are all around defining according to combine above.
As shown in Figure 1, the installed threshing separator 1 of combine comprise to extend substantially cylinder, be positioned at the notch board below this cylinder and the cover plate above cylinder, wherein, notch board and cover plate all partly surround cylinder in part tubular.Seed loopback dish 2 is provided with below notch board; it is collected the material that fallen by notch board and material is delivered to main sieve (also referred to as top sieve) 3 from front; the material fallen through the sieve aperture of main sieve 3 is by the Screening Treatment further of lower sieve 4, and the material do not fallen then delivers to tail sheet 5 backward.
Material is cleaned further at tail sheet 5 place, and the material fallen by tail sheet is collected and processes, and the material do not fallen by tail sheet is then by combine of dishing out.As seen from Figure 2, tail sheet 5 is divided into four pieces along its left and right directions (i.e. width), and the rotation of the center line of whole tail sheet and cylinder is roughly in same perpendicular.
As described above, the flow distribution that the material entering tail sheet 5 is gone up in left-right direction is not uniform.That is, perpendicular on the left and right directions of flow direction of material, tail sheet is greater than at the quality of material that the unit width near its side receives within the unit interval quality of material that the unit width away from this side receives in same time.The present inventor finds, this uneven basic reason is caused by the rotation of cylinder.Specifically, in Fig. 2 of the present invention, suppose that cylinder is rotated in a clockwise direction, the threshing tooth on cylinder repeatedly close to notch board, enter region that notch board covers and away from notch board.When through combing threshing crop material by cylinder carrier enter notch board cover region, the material comprising crop kernel and broken cane can be fallen by the grid hole on notch board rapidly, although material can continue to fall in the circular motion process moved on, the inventory fallen will fall the amount of material before being less than.That is, the amount of the material fallen by notch board is not uniform in the circumference of notch board.Based on this, the material entering seed loopback dish and main sieve also shows uneven on the left and right directions of vehicle body, and the material that final formation enters tail sheet 5 is uneven in left-right direction.In the illustrated embodiment, the material received on the right side of tail sheet is by more than the material received on the left of tail sheet.
In order to the convenience stated, will be defined as on the right side of the tail sheet in Fig. 2 " screw-in side " herein, its implication is, a certain threshing tooth on cylinder enters the angle range pointing to tail sheet by this side; Then be defined as on the left of tail sheet " back-out side ", its implication is, a certain threshing tooth on cylinder enters the angular range leaving tail sheet (namely not pointing to tail sheet) by this side.Can imagine, leave the threshing tooth pointing to tail sheet and will continue to rotate and enter the angular range pointing to cover plate.If also it is contemplated that the cylinder in Fig. 2 rotates in the counterclockwise direction, then the left side of tail sheet will become " screw-in side ", and will become on the right side of it " back-out side ".
After recognizing the problems referred to above, in order to avoid the material entering tail sheet side cannot be adequately processed because too concentrating, the present inventor proposes such solution, namely increase tail sheet 5 and screw in screen size of side to increase its disposal ability at it, thus avoid material containing seed by combine of dishing out.
Under this present general inventive concept, the multiple structure realizing above-mentioned functions can be had.Should be appreciated that these structures are just exemplary, do not form limiting the scope of the invention.
Fig. 3 shows the first structure of tail sheet.In this configuration, tail sheet is divided into two son sieves, and wherein the first son sieve 5A in left side (back-out side) is traditional " lip(ped) sieve ", and it comprises multiple scale extended in left-right direction, and each scale linkage and regulate aperture under the effect of rotating shaft.Introduction about lip(ped) sieve refers to " agricultural mechanics " second edition volume two chapter 10 Section five of agriculture publishing house.On the right side of tail sheet, the second son sieve 5B of (screw-in side) comprises multiple sheet metal with sawtooth upward extended along the longitudinal direction in perpendicular, defines the elongated sieve aperture that fore-and-aft direction extends between these sheet metals.Especially, it should be noted that at this, " sieve aperture " is not limited in the sieve of mesh type, and it can refer to any type of sieve; And " screen size " refers to the average area observing the sieve aperture seen along the direction perpendicular to compass screen surface, hot spot average area during directional light transmission namely perpendicular to compass screen surface; It should be noted that in addition, in the present invention, the son sieve with identical screen size is considered as a son sieve, even if this son sieve is opened by several sieve frame space also they are considered as a son sieve.In this first structure, the screen size of the second son sieve 5B is greater than the screen size of the first son sieve 5A.In figure 3, the second son sieve 5B only accounts for about 1/4 of the overall cover surface of tail sheet in end, the rightmost side.But it may occur to persons skilled in the art that, the cover surface of the second son sieve 5B can account for other shares of the gross area, such as 1/2,1/3,1/5 etc.
Fig. 4 shows the second structure of tail sheet, and itself and the first difference constructed mentioned above are only, the cover surface of the second son sieve 5B accounts for 1/2 of the overall cover surface of tail sheet.
Fig. 5 shows the 3rd structure of tail sheet.In the 3rd structure, tail sheet comprises the first son sieve 5A and the 3rd sieve 5C, itself and the first only difference constructed mentioned above are, 3rd son sieve 5C is lip(ped) sieve, but the spacing of the scale size of this lip(ped) sieve and adjacent scale is greater than scale size and the scale spacing of the first son sieve 5A respectively.Therefore, the 3rd son sieve 5C has the screen size larger than the first son sieve 5A and better passes through performance.
Fig. 6 shows the 4th structure of tail sheet, and itself and the mentioned above the 3rd only difference constructed are, the cover surface of the 3rd son sieve 5C accounts for 1/2 of the overall cover surface of tail sheet.
Fig. 7 shows the 5th structure of tail sheet.In the 5th structure, tail sheet comprises the first son sieve 5A of the leftmost side, the second son sieve 5B of the rightmost side, and the 3rd son sieve 5C be positioned at therebetween, wherein, the screen size of the first son sieve 5A is minimum, the screen size of the 3rd son sieve 5C is maximum, and the screen size of the second son sieve 5B is placed in the middle; Further, first son sieve 5A cover surface account for overall cover surface 1/2, second son sieve 5B cover surface account for overall cover surface the 1/4, three son sieve 5C cover surface account for 1/4 of overall cover surface.
Be described above several structures of tail sheet.Protection scope of the present invention is not limited thereto.Those skilled in the art easily expect, can arrange the son sieve more than three, arrange according to the order that sieve aperture reduces from right to left, and the compass screen surface size of each son sieve also can be arranged according to the situation of combine and crop.Even, those skilled in the art it will also be appreciated that, tail sheet can be only a sieve, and its sieve aperture reduces from right to left gradually, and these do not depart from protection scope of the present invention.
Claims (11)
1. the tail sheet for combine (5), when this combine works, material flows through the surface of described tail sheet (5) and screened, it is characterized in that:
Described tail sheet (5) comprises two or more height sieve (5A, 5B, 5C), and described multiple son sieve arranges along the direction vertical with Flow of Goods and Materials direction;
Each described sub-sifter device has respective screen size, and on the direction vertical with Flow of Goods and Materials direction, described multiple son sieve is according to the order arrangement from big to small of its screen size.
2. tail sheet (5) as claimed in claim 1, is characterized in that,
Described tail sheet (5) comprises the first son sieve (5A) and the second son sieve (5B), and wherein the screen size of the first son sieve (5A) is less than the screen size of the second son sieve (5B).
3. tail sheet (5) as claimed in claim 2, is characterized in that,
The cover surface of described first son sieve (5A) is greater than the cover surface of described second son sieve (5B).
4. tail sheet (5) as claimed in claim 3, is characterized in that,
Described first son sieve (5A) is the adjustable lip(ped) sieve of scale aperture, and the second son sieve (5B) comprises the sheet material of the multiple band sawtooth extended along Flow of Goods and Materials direction.
5. tail sheet (5) as claimed in claim 3, is characterized in that,
Described first son sieve (5A) and the second son sieve (5B) are the adjustable lip(ped) sieve of scale aperture.
6. tail sheet (5) as claimed in claim 1, is characterized in that,
Described tail sheet (5) comprises the first son sieve (5A), the second son sieve (5B) and the 3rd son sieve (5C), wherein the screen size of the 3rd son sieve (5C) is greater than the screen size of the second son sieve (5B), and the screen size of the second son sieve (5B) is greater than the screen size of the first son sieve (5A).
7. tail sheet (5) as claimed in claim 6, is characterized in that,
The cover surface of described first son sieve (5A) is greater than the cover surface of described second son sieve (5B), and the cover surface of described first son sieve (5A) is greater than the cover surface of described 3rd son sieve (5C).
8. tail sheet (5) as claimed in claim 1, is characterized in that,
Described tail sheet (5) comprises the first son sieve (5A), the second son sieve (5B), the 3rd son sieve (5C) and the 4th son sieve, wherein the screen size of the 4th son sieve is greater than the screen size of the 3rd son sieve (5C), the screen size of the 3rd son sieve (5C) is greater than the screen size of the second son sieve (5B), and the screen size of the second son sieve (5B) is greater than the screen size of the first son sieve (5A).
9. the tail sheet (5) as described in one of the claims, is characterized in that,
Observe along the direction perpendicular to tail sheet (5) compass screen surface, the mass flow entering tail sheet (5) reduces from the side of tail sheet (5) gradually to opposite side, and the screen size being positioned at the son sieve of tail sheet (5) described side is greater than the screen size of the son sieve being positioned at tail sheet (5) described opposite side.
10. a combine, this combine has the reaping apparatus for gathering in crop, for carrying by the conveying plant of harvesting crop, for carrying out threshing to crop and the installed threshing separator be separated, and to the cleaning plant that crop kernel is cleaned, wherein
Described installed threshing separator comprises cylinder and is positioned at the notch board below this cylinder, and described cylinder has the rotation being positioned at the perpendicular that front and back extend;
Described cleaning plant comprises main sieve (3) and is positioned at described main sieve rear and the tail sheet (5) be connected with described main sieve, described main sieve and described tail sheet (5) are positioned at the below of described notch board, and the material from described installed threshing separator flows through the upper surface of described main sieve (3) and described tail sheet (5) and screened successively;
Described tail sheet (5) is according to the tail sheet one of claim 1-8 Suo Shu.
11. combines as claimed in claim 10, is characterized in that,
The screen size of the son sieve near the screw-in side of described tail sheet (5) is greater than the screen size that the son away from described screw-in side sieves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410328632.0A CN105325132B (en) | 2014-07-10 | 2014-07-10 | A kind of tail sheet and the combine harvester with the tail sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410328632.0A CN105325132B (en) | 2014-07-10 | 2014-07-10 | A kind of tail sheet and the combine harvester with the tail sheet |
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| Publication Number | Publication Date |
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| CN105325132A true CN105325132A (en) | 2016-02-17 |
| CN105325132B CN105325132B (en) | 2019-01-11 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114602792A (en) * | 2022-03-15 | 2022-06-10 | 东北农业大学 | Sectional type corn cleaning sieve based on bionic structure surface and intelligent control system thereof |
| USD1031792S1 (en) | 2022-08-30 | 2024-06-18 | Calmer Holding Company, Llc | Round bar concave |
| USD1031793S1 (en) | 2022-08-30 | 2024-06-18 | Calmer Holding Company, Llc | Separating grate |
| USD1031791S1 (en) | 2022-08-30 | 2024-06-18 | Calmer Holding Company, Llc | Straight bar concave |
| USD1032666S1 (en) | 2022-08-30 | 2024-06-25 | Calmer Holding Company, Llc | MOG limiting subassembly for combine concave |
| US12102041B2 (en) | 2022-08-30 | 2024-10-01 | Calmer Holding Company, Llc | Methods and systems for threshing/separating grains and legumes utilizing concaves |
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| US12102041B2 (en) | 2022-08-30 | 2024-10-01 | Calmer Holding Company, Llc | Methods and systems for threshing/separating grains and legumes utilizing concaves |
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|---|---|
| CN105325132B (en) | 2019-01-11 |
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