CN106612996A - Combined harvester sorting sieve with sieve piece spacing and oblique angle adjustable - Google Patents

Combined harvester sorting sieve with sieve piece spacing and oblique angle adjustable Download PDF

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Publication number
CN106612996A
CN106612996A CN201611222254.3A CN201611222254A CN106612996A CN 106612996 A CN106612996 A CN 106612996A CN 201611222254 A CN201611222254 A CN 201611222254A CN 106612996 A CN106612996 A CN 106612996A
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China
Prior art keywords
sieve
spacing
waveform
sorting screen
shear blade
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Pending
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CN201611222254.3A
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Chinese (zh)
Inventor
魏纯才
李耀明
梁振伟
王建鹏
王建廷
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Jiangsu University
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Jiangsu University
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Priority to CN201611222254.3A priority Critical patent/CN106612996A/en
Publication of CN106612996A publication Critical patent/CN106612996A/en
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    • 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
    • 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
    • A01F12/448Sieve adjusting means

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

Abstract

The invention relates to a combined harvester sorting sieve with sieve piece spacing and oblique angle adjustable. The sorting sieve includes a vibrating plate, a shear blade type spacing adjusting mechanism, wave-shaped sieve pieces, a jagged tailing sieve body, a lower sieve body, a spacing adjustment driving mechanism, cleaning sieve side walls, a tailing sieve adjusting plate and an eccentric rocking shaft; spacing adjustment devices are installed on the cleaning sieve side walls, and the spacing adjustment driving device is installed on the tailing sieve adjusting plate. The driving mechanism can drive the spacing adjusting mechanism to move through stretching out and drawing back of an extension end so as to increase or decrease the sieve piece spacing. The problem that after passing through a sieve, grains are inconsistent in uniformity is solved, and according to the need, the distance between each two sieve pieces in the different positions in the longitudinal direction of a sieve surface can be adjusted, so the sieve pieces in the different positions on the sieve surface can possess the respective optimum spacing; the lower ends of the wave-shaped sieve pieces can adjust the sieve piece oblique angle by hooking springs, and oblique angle change can guide air flow of a draught fan to fully pass through the sieve; at the same time, the novel wave-shaped sieve pieces solve the problems that grass is easily hooked on the tip of a traditional fish scale sieve and the sieve is easily stuck and blocked.

Description

A kind of sieve spacing and dip-adjustable type combined harvester sorting screen
Technical field
The present invention relates to a kind of sieve gap and opening angle adjustable combining sorting screen, can be widely used for rice and wheat etc. In the cleaning plant of crop, cleaning efficiency is improved.
Background technology
Threshing and cleaning is the core institution of combined harvester, and the quality of type of threshing and sorting mechanism performance directly affects the property of whole machine Energy cleans effect with combined harvester.Vibratory sieve is combined harvester threshing and cleaning vitals.Traditional lip(ped) sieve is clear During choosing, due to the impact at sieve fish scale tip, the careless phenomenon of extension is easily caused:It is the stalk that fallen by cylinder, clever shell, light miscellaneous remaining etc. It is suspended to fish scale tip, it is difficult to fall, causes compass screen surface stalk to pile up, sorting screen seed cleaning efficiency declines.To improve seed and miscellaneous Remaining separating power, the A of Chinese patent CN 102124871 propose that a kind of L-shaped advances tooth, and L-shaped advances tooth by being formed integrally Circular arc level advances tooth and vertical thrust tooth to constitute, and vertical thrust tooth is shaped as triangle, and the invention is suitable in cleaning load When preferably, miscellaneous remaining propulsion area can be increased, accelerate seed and miscellaneous remaining separation, but increased vertical thrust dental transition easily causes extension grass Phenomenon, affects the whereabouts of stalk etc., when especially cleaning load is larger, easily causes compass screen surface to block because hanging grass, comprehensively cleans effect It is really unknown.
When harvesting, the crop of different cultivars, different field situations, the GVG ratio on its sorting screen compass screen surface is different, clearly Load is selected to be likely to change at any time;When GVG is than larger or big cleaning load, sieve gap need to be increased, make the debris such as stalk more Easily fall, while also increasing the saturating sieve amount of unit interval seed;Sorting screen burden is reduced with this.Conversely, sorting screen should be reduced Sieve gap.In addition, because the material that threshing cylinder falls excessively densely is distributed compass screen surface middle front part, so adjusting in sieve spacing When, the sieve gap adjustment range that should tend to middle front part is slightly larger, and afterbody adjustable range is corresponding less.Chinese patent CN To solve the non-adjustable problem of aperture in 104737721 A, a kind of fish scale sieve opening adjustment mechanism is proposed, stretched out by electric cylinder Axle motion pulls fish scale sieve to reach the purpose for adjusting aperture.The patent realizes the regulation of lip(ped) sieve aperture, but can not realize The regulation of sieve longitudinal pitch;The otherness that compass screen surface different longitudinal position sieve spacing can not be realized is adjusted.
The content of the invention
Sorting screen occurs hanging careless phenomenon in the course of the work, easily, causes compass screen surface stalk to pile up, sorting screen seed cleaning effect The problems such as rate declines big with cleaning load, sorting screen spacing is non-adjustable;To solve the above problems, the invention provides a kind of sieve Clearance adjustable type combining sorting screen.
For achieving the above object, the technical scheme taken of the present invention is:A kind of sieve spacing joins with dip-adjustable type Close cropper sorting screen, including shuttle board, deflector, scissors chip distance regulating mechanism, waveform sieve, zigzag tail sheet, under Sieve, spacing adjust drive mechanism, sorting screen side wall, tail sheet adjustable plate and eccentric axis of rocking;Shuttle board be located at sorting screen most before Side, deflector is welded on above shuttle board, and the compass screen surface of waveform sieve composition is at the lower rear of shuttle board;Lower sieve is under waveform sieve Side;Zigzag tail sheet is arranged on the side of sorting screen side wall in waveform sieve rear portion, scissors chip distance regulating mechanism;Spacing is adjusted Section drive mechanism is located at tail sheet rear, on tail sheet adjustable plate;Waveform sieve includes:U-shaped cambered axle, cambered axle thin-walled, waveform Tooth and spring;Insert after the upper cantilever arm set upper roller of U-shaped cambered axle in the centre bore of shear blade;Connect on cantilever arm under U-shaped cambered axle Spring is connect, the spring other end is hung on shear blade installing plate;Scissors chip distance regulating mechanism includes front end fixing axle, connection Pin, chute, roller, shear blade, installing plate and tail end shifting axle;Shear blade includes:Centre bore and stomidium;Shear blade forefront end Hole is connected to front end fixing axle, and other each shear blades connect the scissor type structure of stomidium composition by stomidium connecting pin;Waveform is sieved External part mid portion set upper roller on the U-shaped cambered axle of piece;Can roll in chute;External part outermost end is inserted on waveform sieve cambered axle In the centre bore of shear blade;Tail end shifting axle adjusts drive mechanism and is connected with spacing;Spacing adjust drive mechanism by the first pull bar, Connecting rod, V-type direction conversion sheet, center mounting hole, the second pull bar, connection sheet, displacement transducer and electric cylinder composition, spacing is adjusted Section drive mechanism is arranged on tail sheet adjustable plate;Wherein the first pull bar connects with the tail end shifting axle of scissors chip distance regulating mechanism Connect, the other end is connected with connecting rod;The other end of connecting rod connects with V-type direction conversion sheet, and V-type direction conversion sheet passes through center Installing hole is arranged on tail sheet adjustable plate, and the other end is connected with the spherical plain bearing rod end on the projecting shaft of electric cylinder;Electric cylinder The projecting shaft of projecting shaft and displacement transducer is connected by connection sheet.
In such scheme, the scissors chip size can determine different longitudinal directions between 40mm-60mm according to bench test The scissors chip size of the sorting screen of position.
In such scheme, sorting screen length is 2.0m ~ 2.5m, and width is 1.2m ~ 1.5m, and flow guide bar length is 300mm- 500mm, height 40mm-60mm, shuttle board afterbody lower section 70mm-90mm at be made up of waveform sieve compass screen surface most before End, lower sieve is stamped sieve.
In such scheme, the waveform tooth of the waveform sieve is trigonometric function waveform, and wave function amplitude is less, waveform Functions amplitude value is between 10mm-18mm.
In such scheme, the shear blade installing plate in the scissors chip distance regulating mechanism is "Ji" type structure, in Between space wall arrange chute, scissors chip architecture can be arranged, upper and lower sides are bolted on the wall of sorting screen side, while chute Surface is smooth, is easy to roller rolled.
In such scheme, the scissors chip distance regulating mechanism is arranged on sorting screen side wall side, and opposite side also is provided with Chute, shear blade installing plate;But it is not provided with shear blade mechanism;It is i.e. unilateral that scissors chip distance regulating mechanism is pulled by electric cylinder It is flexible, drive chute of the roller of opposite side on the installing plate of the side to roll, pull whole compass screen surface to move together.
The beneficial benefit of the present invention:(1)A kind of sieve spacing for proposing and dip-adjustable type combined harvester sorting screen;Should Sorting screen can drive the first pull bar to pull shear blade center by direct current drive cylinder external part classical prescription to conversion sheet, change shear blade Centre-to-centre spacing, also just changes the sieve spacing of waveform sieve.Simultaneously waveform sieve lower end hangs with compression spring, can by the effect of spring Realize the regulation of sieve aperture;And it is capable of achieving:When sieve spacing is maximum, aperture is also maximum.The invention can meet sorting screen GVG is than different, the different apertures to sorting screen of cleaning load, the new demand that sieve spacing is proposed in watering and separation procedure;Realize GVG Than big, when emersion object amount is larger;Increase spacing, the saturating sieve amount for making seed unit interval seed increases, and increases aperture;Increase air quantity Stripping effect.(2)Because the material that threshing cylinder falls excessively densely is distributed compass screen surface middle front part, so adjusting in sieve spacing When, the sieve gap adjustment range that should tend to middle front part is slightly larger, and afterbody adjustable range is corresponding less.The present invention can change with crossing The scissors leaf length of same sorting screen diverse location, changes the spacing adjustable range of sieve.It is long by sieve before, during and after setting Degree 60mm, 50mm, 40mm are capable of achieving above-mentioned requirements, and the otherness for realizing compass screen surface different longitudinal position sieve spacing is adjusted.(3) Additionally, new waveform sieve increment is mellow and full curve, radius of curvature is little, and grass not easy to hang is also not in lip(ped) sieve formula Sieve tip hangs grass, cause seed with it is miscellaneous it is remaining be difficult to clean, or even clogging.And as aperture is adjustable, sieve spacing is adjustable, In waveform sieve spacing change, during change of pitch angle, also can be loose, shake off to hang grass, reduce the possibility for hanging grass blocking.
Description of the drawings
Fig. 1 is a kind of sieve spacing and dip-adjustable type combined harvester sorting screen overall pattern.
Fig. 2 is a kind of sieve spacing and dip-adjustable type combined harvester sorting screen top view.
Fig. 3 is waveform sieve front view.
Fig. 4 is scissors chip distance regulating mechanism front view.
Fig. 5 is partial view at M in Fig. 1.
Fig. 6 is shear blade front view.
Fig. 7 is that spacing adjusts drive mechanism right view.
Fig. 8 is that spacing adjusts drive mechanism top view.
In figure:1. shuttle board, 2. deflector, 3. scissors chip distance regulating mechanism, 4. waveform sieve, 5. zigzag tail Sieve, 6. lower to sieve, 7. spacing adjusts drive mechanism, 8. sorting screen side wall, 9. tail sheet adjustable plate, 10. eccentric axis of rocking 10, before 301. End fixing axle, 302 connecting pins, 303 chutes, 304 rollers, 305 shear blades, 305-1 centre bores, 305-2 stomidiums, 306. shear blades Installing plate, 307 tail end shifting axles, 401U type cambered axles, 402 cambered axle thin-walleds, 403 waveform teeth, 404 springs, 701 first pull bars, 702 Connecting rod, 703V types direction conversion sheet, 704 center mounting holes, 705 second pull bars, 706 connection sheets, 707 displacement transducers, 708 Electric cylinder.
Specific embodiment
A kind of sieve spacing of concrete model of the present invention is cleaned with dip-adjustable type combined harvester below in conjunction with the accompanying drawings Sieve specific implementation process is described further.
Such as Fig. 1, shown in 2, by shuttle board 1, deflector 2, scissors chip distance regulating mechanism 3, waveform sieve 4, zigzag Tail sheet 5, lower sieve 6, spacing adjust drive mechanism 7, sorting screen side wall 8, tail sheet adjustable plate 9 and eccentric axis of rocking 10 and constitute.Clean When system works, material can be fallen on sorting screen, while material also can be fallen on shuttle board 1 Jing after the even cloth of deflector 2 cleaning On sieve;Jing blower fans and waveform sieve are acted on, and under the punching that seed is fallen 6 are sieved;Some stalk miscellaneous remaining can backward blow to saw Profile of tooth tail sheet 5, material is front how rear few in the overall distribution of sorting screen, therefore when adjusting, should tend to forward gap and adjust model Enclose slightly larger than postmedian.
As shown in figure 3, waveform sieve 4 includes:Cambered axle 401, cambered axle thin-walled 402 and waveform tooth 403 and spring 404.Waveform The waveform tooth 403 of sieve 4 is trigonometric function waveform, and wave function amplitude is little, wave function amplitude 10mm-18mm it Between.When material is fallen on sorting screen, because waveform sieve 4 uses waveform tooth 403, increment is mellow and full curve, not easy to hang Grass, the sieve tip for being not in lip(ped) sieve formula hangs grass, causes seed to be difficult to clean, or even blocking.
Such as Fig. 4, shown in 5,6, scissors chip distance regulating mechanism 3 includes front end fixing axle 301, connecting pin 302, chute 303rd, roller 304, shear blade 305, installing plate 306 and tail end shifting axle 307;Shear blade 305 includes:Centre bore 305-1 and end Hole 305-2;The forefront stomidium 305-1 of shear blade 305 is connected to front end fixing axle 301, and other each shear blades 305 pass through stomidium The scissor type structure of the connection stomidium composition of 305-2 connecting pins 302;External part mid portion puts on the U-shaped cambered axle 401 of waveform sieve Roller 304;Can roll in chute 303;External part outermost end is inserted in the centre bore of shear blade 305 on waveform sieve cambered axle 401 305-1;Tail end shifting axle 307 adjusts drive mechanism 7 and is connected with spacing;The size of shear blade 305 between 40mm-60mm, can The scissors chip size of the sorting screen of different longitudinal position is determined according to bench test, i.e., corresponding sieve gap;Before may generally be Length 60mm of 1/3rd shear blade 305;Middle part length 50mm of 1/3rd shear blade 305, the length of afterbody shear blade 305 40mm.Shear blade installing plate 306 is "Ji" type structure, and intermediate space side wall arranges chute 303, can arrange that shear blade 305 is tied Structure etc., upper and lower sides are bolted on sorting screen side wall 8, while detent surface is smooth, are easy to roller rolled.Scissors chip Distance regulating mechanism 3 is arranged on the side of sorting screen side wall 8, and opposite side also is provided with chute 303, shear blade installing plate 306;But do not set Put the mechanism of shear blade 305;It is i.e. unilateral to pull scissors chip distance regulating mechanism 3 to stretch by electric cylinder 708, drive opposite side Chute 303 of the roller 304 on the installing plate 306 of the side is rolled, that is, pull whole compass screen surface to move together.
Such as Fig. 7, shown in 8:Spacing adjusts drive mechanism 7 by the first pull bar 701, connecting rod 702, V-type direction conversion sheet 703rd, center mounting hole 704, the second pull bar 705, connection sheet 706, displacement transducer 707 and electric cylinder 708 are constituted.Mechanism's peace It is mounted on tail sheet adjustable plate 9;Wherein the first pull bar 701 is connected with the tail end shifting axle 307 of scissors chip distance regulating mechanism 3, The other end is connected with connecting rod 702;The other end of connecting rod 702 connects with V-type direction conversion sheet 703, V-type direction conversion sheet 703 are arranged on tail sheet adjustable plate by center mounting hole 704, the rod end joint on the projecting shaft of the other end and electric cylinder 708 Bearing is connected.The projecting shaft of electric cylinder 708 and the projecting shaft of displacement transducer 707 are connected by connection sheet 706.
In normal work, the spacing of waveform tooth is moderate, and aperture is moderate, and now sieve is tilted backwards;But work as and run into GVG The situation of increase more unexpected than larger or cleaning load, original aperture and spacing are not applied to, if not in time process be likely to result in it is stifled Plug, now electric cylinder is pushed away forward, and for the effect of direction conversion sheet, the first pull bar can be pulled backward, pulls shear blade composition Rhombus centre bore, rhombus can become " flat ", and horizontal direction catercorner length is elongated, i.e., the spacing of waveform sieve becomes big.Originally incline When, in compression poised state, when sieve spacing becomes big, compression stress is less than spring force to lower end spring, and spring then promotes lower end Sieve is acted on counterclockwise, makes sieve inclination angle become big, and aperture also becomes larger;Just it is sieve when spring is stretched to free state Aperture is maximum(90 ° of inclination angle)Also it is now electric cylinder furthest travel when spacing is maximum, stop motion.Conversely, when load diminishes, Aperture, when gap need to turn down, electric cylinder counter motion, principle is similar to the above.The invention can be met in sorting screen watering and separation procedure GVG realizes the different longitudinal directions of compass screen surface than different, when cleaning load is different to sorting screen apertures, the new demand that sieve spacing is proposed The otherness of position sieve spacing is adjusted.

Claims (6)

1. a kind of sieve spacing and dip-adjustable type combined harvester sorting screen, it is characterised in that including shuttle board(1), water conservancy diversion Plate(2), scissors chip distance regulating mechanism(3), waveform sieve(4), zigzag tail sheet(5), lower sieve(6), spacing adjust drive Mechanism(7), sorting screen side wall(8), tail sheet adjustable plate(9)With eccentric axis of rocking(10);Shuttle board(1)Positioned at sorting screen most before Side, deflector(2)It is welded on shuttle board(1)Above, waveform sieve(4)The compass screen surface of composition is in shuttle board(1)Lower rear;Lower sieve (6)In waveform sieve(4)Lower section;Zigzag tail sheet(5)In waveform sieve(4)Rear portion, scissors chip distance regulating mechanism(3)Peace It is mounted in sorting screen side wall(8)Side;Spacing adjusts drive mechanism(7)Positioned at tail sheet rear, installed in tail sheet adjustable plate(9) On;
Waveform sieve(4)Including:U-shaped cambered axle(401), cambered axle thin-walled(402), waveform tooth(403)And spring(404);U-shaped cambered axle (401)Upper cantilever arm set upper roller(304)After insert shear blade(305)Centre bore(305-1)It is interior;U-shaped cambered axle(401)Under Connecting spring on cantilever arm(404), spring(404)The other end hangs over shear blade installing plate(306)On;
Scissors chip distance regulating mechanism(3)Including front end fixing axle(301), connecting pin(302), chute(303), roller (304), shear blade(305), installing plate(306)With tail end shifting axle(307);Shear blade(305)Including:Centre bore(305-1) And stomidium(305-2);Shear blade(305)Forefront stomidium(305-1)It is connected to front end fixing axle(301), other each shear blades (305)By stomidium(305-2)Connecting pin(302)The scissor type structure of connection stomidium composition;The U-shaped cambered axle of waveform sieve(401) Upper external part mid portion covers upper roller(304);Can be in chute(303)Middle rolling;Waveform sieve cambered axle(401)Upper external part is most Outer end is inserted in shear blade(305)Centre bore(305-1);Tail end shifting axle(307)Drive mechanism is adjusted with spacing(7)It is connected;
Spacing adjusts drive mechanism(7)By the first pull bar(701), connecting rod(702), V-type direction conversion sheet(703), in feel at ease Dress hole(704), the second pull bar(705), connection sheet(706), displacement transducer(707)And electric cylinder(708)Composition, spacing is adjusted Drive mechanism(7)Installed in tail sheet adjustable plate(9)On;Wherein the first pull bar(701)With scissors chip distance regulating mechanism(3)'s Tail end shifting axle(307)Connection, the other end and connecting rod(702)It is connected;Connecting rod(702)The other end and V-type direction change Piece(703)Connect, V-type direction conversion sheet(703)By center mounting hole(704)On tail sheet adjustable plate, the other end and Electric cylinder(708)Projecting shaft on spherical plain bearing rod end be connected;Electric cylinder(708)Projecting shaft and displacement transducer(707) Projecting shaft pass through connection sheet(706)Connection.
2. a kind of sieve spacing according to claim 1 and dip-adjustable type combined harvester sorting screen, it is characterised in that The shear blade(305)Size is between 40mm-60mm.
3. a kind of sieve spacing according to claim 1 and dip-adjustable type combined harvester sorting screen, it is characterised in that Sorting screen length be 2.0m ~ 2.5m, width be 1.2m ~ 1.5m, flow guide bar length be 300mm-500mm, height 40mm-60mm, Shuttle board(1)Afterbody lower section 70mm-90mm at be by waveform sieve(4)The compass screen surface of composition foremost, lower sieve(6)For punching Sieve.
4. a kind of sieve spacing according to claim 1 and dip-adjustable type combined harvester sorting screen, it is characterised in that The waveform sieve(4)Waveform tooth(403)For trigonometric function waveform, amplitude is between 10mm-18mm.
5. a kind of sieve spacing according to claim 1 and dip-adjustable type combined harvester sorting screen, it is characterised in that The scissors chip distance regulating mechanism(3)In shear blade installing plate(306)For " several " font, intermediate space side wall sets chute (303), upper and lower sides are bolted in sorting screen side wall(8)On, detent surface is smooth.
6. a kind of sieve spacing according to claim 1 and dip-adjustable type combined harvester sorting screen, it is characterised in that The scissors chip distance regulating mechanism(3)Installed in sorting screen side wall(8)Side, opposite side is provided with chute(303)And scissors Piece installing plate(306), by electric cylinder(708)Pull scissors chip distance regulating mechanism(3)It is flexible, drive the roller of opposite side (304)In the installing plate of the side(306)On chute(303)Roll, pull whole compass screen surface to move together.
CN201611222254.3A 2016-12-27 2016-12-27 Combined harvester sorting sieve with sieve piece spacing and oblique angle adjustable Pending CN106612996A (en)

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Cited By (10)

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CN107135750A (en) * 2017-05-19 2017-09-08 江苏大学 A kind of grain harvester combine cleaning plant
CN107396702A (en) * 2017-08-22 2017-11-28 湖南农业大学 A kind of adjustable concave grate in gap
CN107812704A (en) * 2017-12-02 2018-03-20 吉林大学 The staggeredly anti-blocking sorting screen of swing type high-moisture percentage cereal Varied clearance
CN108144846A (en) * 2017-12-22 2018-06-12 东北农业大学 Watch regulating mechanism in grain cleaning double deck screen vertical equity inclination angle
CN109769484A (en) * 2019-03-05 2019-05-21 农业农村部南京农业机械化研究所 A kind of grain harvesting machine intelligence cleaning plant
CN113016366A (en) * 2021-03-09 2021-06-25 常州东风农机集团有限公司 Cleaning device of longitudinal axial flow harvester
US11285513B2 (en) * 2019-03-22 2022-03-29 Jiangsu University Three-degree-of-freedom hybrid vibratory screening mechanism, control method thereof, and harvester
CN114731851A (en) * 2022-02-25 2022-07-12 农业农村部南京农业机械化研究所 Adjustable cleaning system of soybean harvester
CN117044444A (en) * 2023-10-10 2023-11-14 安徽省农业科学院农业工程研究所 Sweet potato seedling rotary tillage fertilization watering tectorial membrane all-in-one
US11877538B1 (en) 2022-08-30 2024-01-23 Calmer Holding Company, Llc Threshing grains and legumes utilizing concaves with adjustable openings

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107135750A (en) * 2017-05-19 2017-09-08 江苏大学 A kind of grain harvester combine cleaning plant
CN107396702A (en) * 2017-08-22 2017-11-28 湖南农业大学 A kind of adjustable concave grate in gap
CN107812704B (en) * 2017-12-02 2023-09-22 吉林大学 Staggered swing type high-water-content grain gap-changing anti-blocking cleaning sieve
CN107812704A (en) * 2017-12-02 2018-03-20 吉林大学 The staggeredly anti-blocking sorting screen of swing type high-moisture percentage cereal Varied clearance
CN108144846A (en) * 2017-12-22 2018-06-12 东北农业大学 Watch regulating mechanism in grain cleaning double deck screen vertical equity inclination angle
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US11877538B1 (en) 2022-08-30 2024-01-23 Calmer Holding Company, Llc Threshing grains and legumes utilizing concaves with adjustable openings
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