CN106358577B - A kind of combine harvester sieve - Google Patents

A kind of combine harvester sieve Download PDF

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Publication number
CN106358577B
CN106358577B CN201610754710.2A CN201610754710A CN106358577B CN 106358577 B CN106358577 B CN 106358577B CN 201610754710 A CN201610754710 A CN 201610754710A CN 106358577 B CN106358577 B CN 106358577B
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Prior art keywords
bending part
sieve
dog
ear
grating
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CN106358577A (en
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章沈强
冯涛
李伟
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Xingguang Agricultural Machine Co Ltd
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Xingguang Agricultural Machine Co Ltd
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D41/00Combines, i.e. harvesters or mowers combined with threshing devices
    • A01D41/12Details of combines
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01FPROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F12/00Parts or details of threshing apparatus
    • A01F12/44Grain cleaners; Grain separators
    • A01F12/446Sieving means

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

The present invention relates to a kind of sieve more particularly to a kind of combine harvester sieves.It is characterized in that:The parallel longitudinal of the sieve is provided with multiple gratings;The grating has a bending part, and the bending part is equipped with dog-ear, and the length direction interval of the grating is arranged the first bending part and the second bending part, and the opening direction of the dog-ear of first bending part and second bending part is opposite;The dog-ear portion of first bending part flips up, and the first angle is formed with sieve plane;Two adjacent gratings, the first bending part of one of grating is overlapping with the bending part of another grating, and the both ends of the dog-ear of the first bending part are fixedly connected with second bending part respectively.Have many advantages, such as that simple in structure, at low cost, light-weight, easy to manufacture and install, reliability is high, long lifespan, the amount of cleaning is big, cleaning effect is good.

Description

A kind of combine harvester sieve
Technical field
The present invention relates to a kind of sieve more particularly to a kind of combine harvester sieves.
Background technology
With the progress of society and the development of science and technology, more and more mechanical equipments are applied in agricultural production, combine Harvester is exactly one such.Combine harvester can once complete the harvesting of cereals crop, threshing, detach stalk, is clear Except processes such as remnants, various corresponding crops finished products or semi-finished product are directly acquired from field.
Usually all there is cleaning plant, to the seed after threshing under the action of wind turbine and vibrating screen in combine harvester It is screened, dressing mechanism is discharged in tiny stalk, qualified seed is selected and is sent into unloading mechanism.Existing joint is received The dressing mechanism of cutting mill is screened to crop using the sieve group of plate, under the action of the seed vibration source after disengaging, The de- unloading mechanism that lower section is fallen into through the strip slot between sieve, and the remnants such as stalk after threshing are in fan action lower edge The plate plane for sieve is discharged dressing mechanism.The dressing mechanism of this structure, when the humidity of crop is larger, after threshing Seed is easy to be deposited in the sieve surface of plate, can not be collected, lead to the waste of crop.Therefore, it is necessary to improve opening for sieve Degree, improve the whereabouts of seed by area, to improve the throughput of seed.And when the humidity of crop is smaller, sieve is such as Fruit still maintains larger aperture, and the remnants such as stalk after threshing are also easy to drop into down through the strip slot between sieve In the unloading mechanism of side, the cleannes of dressing mechanism is caused to reduce.
103814708 B of CN 101933431 A and CN proposes the sorting screen with opening adjusting device, passes through tune The aperture of whole sieve adapts to the crop of different humidity.Sieve is needed using the stainless steel material with certain toughness, and Reinforcing rib is arranged in intermediate position.It is of high cost, weight is big, and complicated, installation difficulty is big, is easy to happen failure.
Invention content
The purpose of the present invention is to provide a kind of sieve simple in structure, does not have to adjust using the sorting screen of the sieve and open Degree.
A kind of combine harvester sieve, it is characterised in that:The parallel longitudinal of the sieve is provided with multiple gratings;The sieve Item has a bending part, and the bending part is equipped with dog-ear, and the first bending part and second curved is arranged in the length direction interval of the grating The opening direction of the dog-ear of folding part, first bending part and second bending part is opposite;The dog-ear of first bending part Portion flips up, and the first angle is formed with sieve plane;Two adjacent gratings, the first bending part of one of grating with it is another The bending part of one grating is overlapping, and the both ends of the dog-ear of the first bending part are fixedly connected with second bending part respectively.
Preferably, first angle is more than or equal to 5 °, and it is less than or equal to 30 °.
Preferably, the dog-ear of second bending part is turned over downwards, the second angle of formation parallel with the sieve;It is adjacent Two gratings, the first bending part of one of grating and the bending part of another grating are overlapping, the dog-ear of the first bending part Both ends be fixedly connected respectively with the both ends of the dog-ear of second bending part.
Preferably, second angle is more than or equal to 5 °, and it is less than or equal to 30 °.
Preferably, the dog-ear on the vertex and second bending part of the dog-ear of the first adjacent bending part of the grating Vertex between length be 60mm-90mm.
Preferably, the vertex of the dog-ear of the first bending part of the grating is less than or equal to the length of its end 1/3 of length between the vertex of the dog-ear of the vertex and the second adjacent bending part.
Preferably, the vertex of the dog-ear of the second bending part of the grating is less than or equal to the length of its end 1/3 of length between the vertex of the dog-ear of the vertex and the first adjacent bending part.
Preferably, the grating is round steel wire.
Preferably, the grating is the thick round steel wires of 2mm-6mm.
Preferably, the grating is the wire-like material of section overall diameter 2mm-6mm arbitrary shapes.
Preferably, the sieve is steel plate integrated punching, is bent to form.
The sorting screen of the present invention by adjusting guide ribs on wave-shape board angle so that the material that falls on wave-shape board is along drawing The angle of guide plate setting is imported into the sieve at its rear, and is uniformly distributed in sieve, and guiding plate part stretches out wave-shape board, So that material integrated distribution promotes screening effect at the middle part of sieve.It is distributed a large amount of sieve pore in sieve, greatly improves seed Pass through area.Meanwhile the dog-ear of bending part turns down up and down respectively so that sieve pore spatially shape, in vertical direction Projected area be less than the surface area of sieve pore.Therefore, the sieve pore of the solid can effectively prevent the short straw with certain length Stalk continues to fall, and under the booster action of wind turbine, it will be formed along the dog-ear turned over by sundries such as separation short stems oblique Towards rear movement, it is quickly discharged dressing mechanism.With simple in structure, at low cost, light-weight, easy to manufacture and install, reliability Height, the advantages that long lifespan, the amount of cleaning are big, cleaning effect is good.
Description of the drawings
The overlooking structure figure of Fig. 1 sorting screens;
The side block diagram of Fig. 2 sorting screens;
The partial enlarged view of label J in Fig. 3 Fig. 2;
The structural schematic diagram of Fig. 4 sieves;
The side structure schematic view of Fig. 5 sieves;
The partial enlarged view of label H in Fig. 6 Fig. 5;
Fig. 7 grating structural schematic diagrams;
Fig. 8 grating structure partial schematic diagrames;
The first angles of Fig. 9 and the second angle schematic diagram.
Figure 10 steel plates sieve circular hole and arrange schematic diagram.
Label K partial enlarged views in Figure 11 Figure 10.
Figure 12 steel plates sieve square hole and arrange schematic diagram.
Label I partial enlarged views in Figure 13 Figure 12.
Specific implementation mode
Clear explanation is made to the present invention below in conjunction with attached drawing.
Embodiment one
A kind of combine harvester, has a kind of sorting screen as shown in Figure 1, 2, 3, including screen frame 6, sieve 4, by original text plate 5, Lower sieve plate 3 and wave-shape board 2, sieve 4 are mounted between 6 two side of screen frame, and lower sieve plate 3 is located at the bottom of screen frame 6, sieve 4 Lower section, be mounted between 6 two side of screen frame, close to the tail portion of sieve 4 by original text plate 5, wave-shape board 2 is mounted on the both sides of screen frame 6 Between wall, close to the front of sieve 4.
Such as Fig. 4, the parallel longitudinal of sieve is provided with multiple round steel wires(Such as Fig. 5,2-6mm is thick, preferably 4mm)Manufactured sieve There is bending part 411, bending part to be equipped with dog-ear 4111 for item 41, grating, and the first bending part is arranged in the length direction interval of grating 41 The opening direction of the dog-ear of 411a and the second bending part 411b, the first bending part 411a and the second bending part 411b is opposite.Such as figure 7-9, the length between the vertex A of the dog-ear of the first adjacent bending part 411a of grating 41 and the vertex B of the dog-ear of the second bending part Degree is 60mm-90mm, preferably 80mm.The length on the side 41111 of the dog-ear 4111 of grating bending part is about vertex A and vertex 1/3 of length between B.The dog-ear 4111 of first bending part flips up, and the first angle a is formed with sieve plane(5°<=a<= 30 °, preferably 12 °);The dog-ear 4111 of second bending part 411b is turned over downwards, and the second angle b is formed with sieve plane(5°<=b <=30 °, preferably 12 °).Two adjacent gratings 41a, 41b, the first bending part of one of grating 41a and another sieve The second bending part of 41b is overlapping, the both ends of the dog-ear of the first bending part 41a respectively with the dog-ear of the second bending part 41b Both ends are fixedly connected.
Wave-shape board 2 is equipped with guide ribs mounting portion, and guide ribs mounting portion includes the front and rear for being arranged in parallel in wave-shape board Two mounting bars 21a, 21b, the length direction of mounting bar is equipped with multiple mounting bar mounting posts 211.Section is that the strip of L-type draws Conducting bar 22 comprising horizontally disposed mounting surface and the blocking surface perpendicular to mounting surface setting.The end of mounting surface, which is equipped with, draws Conducting bar mounting hole 221 and the multiple guide ribs adjustment holes 222 being arranged set on the length direction along guide ribs, guide ribs are adjusted The distance between hole 222 and guide ribs mounting hole 221 are more than or equal to the distance between two mounting bars.
Positioned at 6 bottom of screen frame lower sieve plate 3 using wire gauze sieve, steel plate sieve or use engineering plastic material screen, sieve pore circular hole or Person's square hole, aperture 6-24mm(It is configured according to different material), and Heterogeneous Permutation.
Using nut by guide ribs mounting hole 222 with positioned at wave prelaminar part mounting bar 21a on mounting bar mounting post 211 connections, the suitable guide ribs adjustment hole 222 of reselection are installed with the mounting bar on the mounting bar 21b at wave wave rear portion Column 211 connects, by being installed on wave-shape board at an appropriate angle for guide ribs so that the material fallen on wave-shape board is being transported backward Angle in dynamic along guide ribs setting is introduced in the sieve of rear, and is uniformly distributed in sieve.Wave is stretched out in guide ribs part Wave plate so that material continues guiding and integrated distribution promotes screening effect at the middle part of sieve.A large amount of sieve is distributed in sieve Hole, greatly improve granular seed passes through area.Meanwhile the dog-ear of bending part turns down up and down respectively so that Sieve pore spatially shape, the sieve pore of the solid for short stalk of the strip with certain length and it is miscellaneous it is remaining by area but not Greatly.Under the booster action of wind turbine, short stalk and it is miscellaneous it is remaining will backward be moved along the inclined-plane that the dog-ear turned over is formed, quickly arranged Go out dressing mechanism.Meanwhile the lower sieve plate below sieve using aperture smaller and surface it is smooth steel plate sieve, can be short to what is slipped through the net Stalk or it is miscellaneous it is remaining play further filtration, to ensure entirely to be cleaned the high cleanliness of seed.
Embodiment two
A kind of combine harvester, has a kind of sorting screen as shown in Figure 1, 2, 3, including screen frame 6, sieve 4, by original text plate 5, Lower sieve plate 3 and wave-shape board 2, sieve 4 are mounted between 6 two side of screen frame, and lower sieve plate 3 is located at the bottom of screen frame 6, sieve 4 Lower section, be mounted between 6 two side of screen frame, close to the tail portion of sieve 4 by original text plate 5, wave-shape board 2 is mounted on the both sides of screen frame 6 Between wall, close to the front of sieve 4.
Such as Fig. 4, the parallel longitudinal wire-like material for being provided with multiple section outsourcing circular diameter 2-6mm of sieve(Such as side The square steel silk of long 4mm)There is bending part 411, bending part to be equipped with dog-ear 4111, the length of grating 41 for manufactured grating 41, grating The first bending part 411a and the second bending part 411b, the folding of the first bending part 411a and the second bending part 411b is arranged in direction interval The opening direction at angle is opposite.Such as Fig. 7-9, the vertex A and the second bending part of the dog-ear of the first adjacent bending part 411a of grating 41 Dog-ear vertex B between length be 60mm-90mm, preferably 80mm.The side 41111 of the dog-ear 4111 of grating bending part Length is about 1/3 of the length between vertex A and vertex B.The dog-ear 4111 of first bending part flips up, with sieve plane Form the first angle a(5°<=a<=30 °, preferably 12 °);The dog-ear 4111 of second bending part 411b is turned over downwards, flat with sieve Face forms the second angle b(5°<=b<=30 °, preferably 12 °).Two adjacent gratings 41a, 41b, one of grating 41a's The second bending part of first bending part and another grating 41b are overlapping, and the both ends of the dog-ear of the first bending part 41a are respectively with the The both ends of the dog-ear of two bending part 41b are fixedly connected.
Wave-shape board 2 is equipped with guide ribs mounting portion, and guide ribs mounting portion includes the front and rear for being arranged in parallel in wave-shape board Two mounting bars 21a, 21b, the length direction of mounting bar is equipped with multiple mounting bar mounting posts 211.Section is that the strip of L-type draws Conducting bar 22 comprising horizontally disposed mounting surface and the blocking surface perpendicular to mounting surface setting.The end of mounting surface, which is equipped with, draws Conducting bar mounting hole 221 and the multiple guide ribs adjustment holes 222 being arranged set on the length direction along guide ribs, guide ribs are adjusted The distance between hole 222 and guide ribs mounting hole 221 are more than or equal to the distance between two mounting bars.
Positioned at 6 bottom of screen frame lower sieve plate 3 using wire gauze sieve, steel plate sieve or use engineering plastic material screen, sieve pore circular hole or Person's square hole, aperture 6-24mm(It is configured according to different material), and Heterogeneous Permutation.
Using nut by guide ribs mounting hole 222 with positioned at wave prelaminar part mounting bar 21a on mounting bar mounting post 211 connections, the suitable guide ribs adjustment hole 222 of reselection are installed with the mounting bar on the mounting bar 21b at wave wave rear portion Column 211 connects, by being installed on wave-shape board at an appropriate angle for guide ribs so that the material fallen on wave-shape board is being transported backward Angle in dynamic along guide ribs setting is introduced in the sieve of rear, and is uniformly distributed in sieve.Wave is stretched out in guide ribs part Wave plate so that material continues guiding and integrated distribution promotes screening effect at the middle part of sieve.A large amount of sieve is distributed in sieve Hole, greatly improve granular seed passes through area.Meanwhile the dog-ear of bending part turns down up and down respectively so that Sieve pore spatially shape, the sieve pore of the solid for short stalk of the strip with certain length and it is miscellaneous it is remaining by area but not Greatly.Under the booster action of wind turbine, short stalk and it is miscellaneous it is remaining will backward be moved along the inclined-plane that the dog-ear turned over is formed, quickly arranged Go out dressing mechanism.Meanwhile the lower sieve plate below sieve using aperture smaller and surface it is smooth steel plate sieve, can be short to what is slipped through the net Stalk or it is miscellaneous it is remaining play further filtration, to ensure entirely to be cleaned the high cleanliness of seed.
Embodiment three
A kind of combine harvester, has a kind of sorting screen as shown in Figure 1, 2, 3, including screen frame 6, sieve 4, by original text plate 5, Lower sieve plate 3 and wave-shape board 2, sieve 4 are mounted between 6 two side of screen frame, and lower sieve plate 3 is located at the bottom of screen frame 6, sieve 4 Lower section, be mounted between 6 two side of screen frame, close to the tail portion of sieve 4 by original text plate 5, wave-shape board 2 is mounted on the both sides of screen frame 6 Between wall, close to the front of sieve 4.
Such as Fig. 4, sieve is to be formed by steel plate punched bending.The grating 41 of parallel longitudinal setting is specifically included, grating has Bending part 411, bending part are equipped with dog-ear 4111, and the bendings of the first bending part 411a and second are arranged in the length direction interval of grating 41 The opening direction of the dog-ear of portion 411b, the first bending part 411a and the second bending part 411b is opposite.Such as Fig. 7-9, grating 41 is adjacent The first bending part 411a dog-ear vertex A and the second bending part dog-ear vertex B between length be 60mm-90mm, Preferably 80mm.The length on the side 41111 of the dog-ear 4111 of grating bending part is about the length between vertex A and vertex B 1/3.The dog-ear 4111 of first bending part flips up, and the first angle a is formed with sieve plane(5°<=a<=30 °, preferably 12°);The dog-ear 4111 of second bending part 411b is turned over downwards, and the second angle b is formed with sieve plane(5°<=b<It is=30 °, best It is 12 °).Two adjacent gratings 41a, 41b, the first bending part of one of grating 41a and the second of another grating 41b Bending part is overlapping, and the both ends of the dog-ear of the first bending part 41a are fixed with the both ends of the dog-ear of the second bending part 41b respectively to be connected It connects.
Wave-shape board 2 is equipped with guide ribs mounting portion, and guide ribs mounting portion includes the front and rear for being arranged in parallel in wave-shape board Two mounting bars 21a, 21b, the length direction of mounting bar is equipped with multiple mounting bar mounting posts 211.Section is that the strip of L-type draws Conducting bar 22 comprising horizontally disposed mounting surface and the blocking surface perpendicular to mounting surface setting.The end of mounting surface, which is equipped with, draws Conducting bar mounting hole 221 and the multiple guide ribs adjustment holes 222 being arranged set on the length direction along guide ribs, guide ribs are adjusted The distance between hole 222 and guide ribs mounting hole 221 are more than or equal to the distance between two mounting bars.
Positioned at 6 bottom of screen frame lower sieve plate 3 using wire gauze sieve, steel plate sieve or use engineering plastic material screen, sieve pore circular hole or Person's square hole, aperture 6-24mm(It is configured according to different material), and Heterogeneous Permutation.
Using nut by guide ribs mounting hole 222 with positioned at wave prelaminar part mounting bar 21a on mounting bar mounting post 211 connections, the suitable guide ribs adjustment hole 222 of reselection are installed with the mounting bar on the mounting bar 21b at wave wave rear portion Column 211 connects, by being installed on wave-shape board at an appropriate angle for guide ribs so that the material fallen on wave-shape board is being transported backward Angle in dynamic along guide ribs setting is introduced in the sieve of rear, and is uniformly distributed in sieve.Wave is stretched out in guide ribs part Wave plate so that material continues guiding and integrated distribution promotes screening effect at the middle part of sieve.A large amount of sieve is distributed in sieve Hole, greatly improve granular seed passes through area.Meanwhile the dog-ear of bending part turns down up and down respectively so that Sieve pore spatially shape, the sieve pore of the solid for short stalk of the strip with certain length and it is miscellaneous it is remaining by area but not Greatly.Under the booster action of wind turbine, short stalk and it is miscellaneous it is remaining will backward be moved along the inclined-plane that the dog-ear turned over is formed, quickly arranged Go out dressing mechanism.Meanwhile the lower sieve plate below sieve using aperture smaller and surface it is smooth steel plate sieve, can be short to what is slipped through the net Stalk or it is miscellaneous it is remaining play further filtration, to ensure entirely to be cleaned the high cleanliness of seed.
Example IV
A kind of combine harvester, has a kind of sorting screen as shown in Figure 1, 2, 3, including screen frame 6, sieve 4, by original text plate 5, Lower sieve plate 3 and wave-shape board 2, sieve 4 are mounted between 6 two side of screen frame, and lower sieve plate 3 is located at the bottom of screen frame 6, sieve 4 Lower section, be mounted between 6 two side of screen frame, close to the tail portion of sieve 4 by original text plate 5, wave-shape board 2 is mounted on the both sides of screen frame 6 Between wall, close to the front of sieve 4.
Such as Fig. 4, sieve is engineering plastics material.The grating 41 of parallel longitudinal setting is specifically included, grating has bending part 411, bending part is equipped with dog-ear 4111, and the first bending part 411a and the second bending part is arranged in the length direction interval of grating 41 The opening direction of the dog-ear of 411b, the first bending part 411a and the second bending part 411b is opposite.Such as Fig. 7-9, grating 41 is adjacent Length between the vertex A of the dog-ear of first bending part 411a and the vertex B of the dog-ear of the second bending part is 60mm-90mm, most It is 80mm well.The length on the side 41111 of the dog-ear 4111 of grating bending part is about 1/ of the length between vertex A and vertex B 3.The dog-ear 4111 of first bending part flips up, and the first angle a is formed with sieve plane(5°<=a<=30 °, preferably 12 °); The dog-ear 4111 of second bending part 411b is turned over downwards, and the second angle b is formed with sieve plane(5°<=b<=30 °, preferably 12°).Two adjacent gratings 41a, 41b, the first bending part of one of grating 41a and the second of another grating 41b curved Folding part is overlapping, and the both ends of the dog-ear of the first bending part 41a are fixed with the both ends of the dog-ear of the second bending part 41b respectively to be connected It connects.
Wave-shape board 2 is equipped with guide ribs mounting portion, and guide ribs mounting portion includes the front and rear for being arranged in parallel in wave-shape board Two mounting bars 21a, 21b, the length direction of mounting bar is equipped with multiple mounting bar mounting posts 211.Section is that the strip of L-type draws Conducting bar 22 comprising horizontally disposed mounting surface and the blocking surface perpendicular to mounting surface setting.The end of mounting surface, which is equipped with, draws Conducting bar mounting hole 221 and the multiple guide ribs adjustment holes 222 being arranged set on the length direction along guide ribs, guide ribs are adjusted The distance between hole 222 and guide ribs mounting hole 221 are more than or equal to the distance between two mounting bars.
Positioned at 6 bottom of screen frame lower sieve plate 3 using wire gauze sieve, steel plate sieve or use engineering plastic material screen, sieve pore circular hole or Person's square hole, aperture 6-24mm(It is configured according to different material), and Heterogeneous Permutation.
Using nut by guide ribs mounting hole 222 with positioned at wave prelaminar part mounting bar 21a on mounting bar mounting post 211 connections, the suitable guide ribs adjustment hole 222 of reselection are installed with the mounting bar on the mounting bar 21b at wave wave rear portion Column 211 connects, by being installed on wave-shape board at an appropriate angle for guide ribs so that the material fallen on wave-shape board is being transported backward Angle in dynamic along guide ribs setting is introduced in the sieve of rear, and is uniformly distributed in sieve.Wave is stretched out in guide ribs part Wave plate so that material continues guiding and integrated distribution promotes screening effect at the middle part of sieve.A large amount of sieve is distributed in sieve Hole, greatly improve granular seed passes through area.Meanwhile the dog-ear of bending part turns down up and down respectively so that Sieve pore spatially shape, the sieve pore of the solid for short stalk of the strip with certain length and it is miscellaneous it is remaining by area but not Greatly.Under the booster action of wind turbine, short stalk and it is miscellaneous it is remaining will backward be moved along the inclined-plane that the dog-ear turned over is formed, quickly arranged Go out dressing mechanism.Meanwhile the lower sieve plate below sieve using aperture smaller and surface it is smooth steel plate sieve, can be short to what is slipped through the net Stalk or it is miscellaneous it is remaining play further filtration, to ensure entirely to be cleaned the high cleanliness of seed.
Above embodiment is only that the preferred embodiment of the present invention is described, not the design to the present invention and model It encloses and is defined.Under the premise of not departing from design concept of the present invention, ordinary people in the field does technical scheme of the present invention The all variations and modifications gone out, should all drop into protection scope of the present invention, the claimed technology contents of the present invention, entirely It records in detail in the claims in portion.

Claims (12)

1. a kind of combine harvester sieve, it is characterised in that:The parallel longitudinal of the sieve is provided with multiple gratings;The grating With bending part, the bending part is equipped with dog-ear, and the first bending part and the second bending is arranged in the length direction interval of the grating The opening direction of the dog-ear of portion, first bending part and second bending part is opposite;The dog-ear portion of first bending part It flips up, the first angle is formed with sieve plane;Two adjacent gratings, the first bending part of one of grating with it is another The bending part of a grating is overlapping, and the both ends of the dog-ear of the first bending part are fixedly connected with second bending part respectively.
2. a kind of combine harvester sieve according to claim 1, it is characterised in that:First angle is more than or equal to 5 °, and it is less than or equal to 30 °.
3. a kind of combine harvester sieve according to claim 1, it is characterised in that:The dog-ear of second bending part to Lower fold, the second angle of formation parallel with the sieve;Two adjacent gratings, the first bending part of one of grating with it is another The bending part of one grating is overlapping, the both ends of the dog-ear of the first bending part both ends with the dog-ear of second bending part respectively Portion is fixedly connected.
4. a kind of combine harvester sieve according to claim 3, it is characterised in that:Second angle is more than or equal to 5 °, and it is less than or equal to 30 °.
5. a kind of combine harvester sieve according to claim 3, it is characterised in that:Adjacent first of the grating is curved Length between the vertex of the dog-ear of the vertex of the dog-ear of folding part and second bending part is 60mm-90mm.
6. a kind of combine harvester sieve according to claim 1, it is characterised in that:First bending part of the grating The vertex of dog-ear to the length of its end, be less than or equal to the vertex and the dog-ear of adjacent the second bending part vertex it Between length 1/3.
7. a kind of combine harvester sieve according to claim 1, it is characterised in that:Second bending part of the grating The vertex of dog-ear to the length of its end, be less than or equal to the vertex and the dog-ear of adjacent the first bending part vertex it Between length 1/3.
8. a kind of combine harvester sieve according to claim 1, it is characterised in that:The grating is round steel wire.
9. a kind of combine harvester sieve according to claim 8, it is characterised in that:The grating is 2mm-6mm thick Round steel wire.
10. a kind of combine harvester sieve according to claim 1, it is characterised in that:The grating is that section outsourcing is straight The wire-like material of diameter 2mm-6mm arbitrary shapes.
11. a kind of combine harvester sieve according to claim 1, it is characterised in that:The sieve is that steel plate integrally rushes It presses, be bent to form.
12. a kind of combine harvester sieve according to claim 1, it is characterised in that:The sieve is engineering plastics material Matter.
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Denomination of invention: Combine screen

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