CN104855057A - Cleaning screen of combine harvester - Google Patents
Cleaning screen of combine harvester Download PDFInfo
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- CN104855057A CN104855057A CN201510053136.3A CN201510053136A CN104855057A CN 104855057 A CN104855057 A CN 104855057A CN 201510053136 A CN201510053136 A CN 201510053136A CN 104855057 A CN104855057 A CN 104855057A
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- sieve
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- combined harvester
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Abstract
The invention provides a cleaning screen of a combine harvester. The cleaning screen which comprises a screen frame (421), screen pieces (422) and shock pads (422f), wherein the screen pieces (422) are mounted near the middles of two inner side walls of the screen frame (421); two ends of each screen piece (422) are connected with the corresponding shock pad (422f) through shafts; the shock pads (422f) are mounted on the screen frame (421). Compared with the prior art, the cleaning screen provided by the invention has the benefits that the shock pads (422f) are additionally arranged on the screen pieces (422), and the impact of the screen pieces (422) on a contacted part is reduced under the action of the shock pads (422f), so that the noise is reduced, the damage on the contacted part is reduced, and the service life of the contacted part is prolonged.
Description
Technical field
The present invention relates to agricultural machinery technological field, particularly relate to grain header technical field, it is in particular to a kind of cleaning sieve for combined harvester.
Background technology
The sorting screen of combine is the vitals of combine, the effect of screening, cleaning cereal is played in grain header, its operation principle is: by the vibration of sieve nest the grain of threshing, stalk layering, then screen filtration is passed through, under fan action, the foreign material such as dust, little stalk are blown away simultaneously, thus realize grain cleaning.For making cereal layered filtration abundant, reach the best and clean effect, area is large, vibration frequency is high to require sorting screen to clean.Sorting screen on existing combine is mainly cleaned crop by vibration own, gap is there is between each parts of vibratory sieve, produce resonance after vibration, during work, can much noise be manufactured, and time of vibration length can make parts produce fatigue fracture.On sorting screen, damping spring is installed to overcome some combine of above defect, but easily there is chattering and oscillation crosswise phenomenon in damping spring, owing to there is self-vibration and the existing picture of oscillation crosswise, easy transmission low-frequency vibration, add friction, affect parts service life, in addition because spring damping is too little, critical damping ratio generally only has 0.005, therefore covibration can be produced between device frequency zone of approach, cause vibration aggravation, this also can affect parts service life and equipment working effect.
As CN 101933431 A discloses a kind of combine, possesses the threshing apparatus in the sorting portion of the below that there is concave grate and be positioned at concave grate, it is characterized in that, described sorting portion has the screen box that can rock back and forth, be arranged on the glume-shell screen shelling handled thing fallen from described concave grate being carried out to sorting in this screen box, described glume-shell screen is configured to, have with preset space length at fore-and-aft direction and row arrangement and respectively can around transverse axis core joltily by the multiple sorting plates supported, the carriage that the fore-and-aft direction connected between these multiple sorting plates is long, the angle of described each sorting plate is changed by the movable interlock with described carriage, thus set the aperture of described glume-shell screen.Screen box operationally needs to rock back and forth, owing to inevitably there is gap between screen box and linkage part, vibration will be produced, much noise can be produced when screen box acutely shakes, affect working environment, vibrating mass vibration for a long time can make parts produce fatigue fracture in addition, and the service life of parts is reduced greatly.
And for example RU2010114616A discloses the grain cleaning screen device of combine, it includes the sidewall for blocking the suspension in this sieve, molecular sieve, crane-choking-winding, vibrator, the vibrator of roller, guide, spring damper, this spring damper is for balancing the power of the inertia of this sieve.Easily there is chattering and oscillation crosswise phenomenon in spring, owing to there is self-vibration and the existing picture of oscillation crosswise, easy transmission low-frequency vibration, add friction, affect parts service life, in addition because spring damping is too little, critical damping ratio generally only has 0.005, therefore can produce covibration between device frequency zone of approach, cause vibration aggravation, this also can affect parts service life and equipment working effect.
Summary of the invention
For the problem that noise is large and service life is low that the sorting screen parts overcoming combine in prior art exist, the invention provides a kind of cleaning sieve for combined harvester.
The invention provides a kind of cleaning sieve for combined harvester, comprise screen frame 421, sieve 422, beam 422f, sieve 422 arranges the position being arranged on close centre between two side inside screen frame 421, and the two ends of sieve 422 are connected by axle with beam 422f, and beam 422f is arranged on screen frame 421.
Preferably, the material of beam 422f is nylon.
Preferably, cleaning sieve for combined harvester also comprise comb, wire gauze sieve 423, by original text plate 424, eccentric shaft 425, sprocket wheel 426, eccentric block 426, eccentric block 427 and umbrella head plate 428; Comb is satisfied with on dress screen frame 421, and be positioned at the top of the end of sieve 422, wire gauze sieve 423 is positioned at the outside bottom screen frame 421, in the below of sieve 422; Umbrella head plate 428 is arranged on the outside bottom screen frame 421, is positioned at after wire gauze sieve 423; To be positioned at inside screen frame 421 between two side near sorting screen 422 afterbody by original text plate 424, eccentric shaft 425 is arranged on the outside of screen frame 421 two side, near the bottom of sorting screen 422 afterbody, sprocket wheel 426 is arranged on the axle head of eccentric shaft 425, and eccentric block 427 is arranged on sprocket wheel 426.
Preferably, screen frame 421 is made up of framework 421a, corrugated plating 421b, wind deflector 421c, corrugated plating 421b comprises corrugated plating 421b1 and lower corrugated plating 421b2, upper corrugated plating 421b1 frame is between inner side two wall of framework 421a, in the front portion of sorting screen 12, lower corrugated plating 421b2 frame is between inner side two wall of framework 421a, in the bottom inside of sorting screen, be positioned at rear side below corrugated plating 421b1, wire gauze sieve 423 is between inner side two wall of framework 421a, in the bottom outside of sorting screen, at the rear of lower corrugated plating 421b2.
Preferably, sieve 422 comprises fixing grating 422b and movable grating 422c, fixing grating 422b is made up of the first axle 422b1 and the first sieve bar 422b2, movable grating 422c is made up of installing plate 422c1, the second axle 422c2, the second sieve bar 422c3, first axle 422b1 is fixedly welded on fixing grating 422b two ends, second axle 422c2 is fixedly welded on movable grating 422c two ends, and described first axle 422b1 and the second axle 422c2 is installed on the hole of the beam 422f being positioned at two ends respectively.
Preferably, the first sieve bar 422b2 and the second sieve bar 422c3 adopts stainless steel.
Preferably, the first sieve bar 422b2 there is the first inside groove 422b21.
Preferably, two sides of the first axle 422b1 and the first groove 422b21 are tangent, and it is by being welded to connect.
Preferably, the first sieve bar 422b2 is provided with sawtooth 422b22.
Preferably, the second axle 422c2 and the second sieve bar 422b3 and installing plate 422c1 adopts and is welded to connect.
Preferably, sieve 422 also comprises sieve fixed strip 422a, sieve activity bar 422d, holder 422e, holder 422e is arranged on sieve fixed strip 422a, sieve activity bar 422d bolt is connected to holder 422e, sieve fixed strip 422a is fixed on screen frame 421, the sieve activity bar 422d left and right sides is provided with sole type installing plate 422c1, sole type installing plate 422c1 top is provided with crescent perforate 422c11, axle 422c2 is arranged in crescent perforate 422c11, and can move around in crescent perforate 422c11, thus drive activity grating 422b moves around.
Preferably, beam 422f comprises the first beam 422f1 and the second beam 422f2, and the first beam 422f1 and the second beam 422f2 has two holes respectively.
Preferably, fixing grating 422b two ends have two the first axle 422b1 respectively, these two the first axle 422b1 are each passed through in two holes of the first beam 422f1, a first axle 422b1 of mounted fixing grating 422b pierces in the hole of sieve fixed strip 422a, and another first axle 422b1 pierces in the hole of sieve activity bar 422d.
Preferably, movable grating 422c two ends have two the second axle 422c3 respectively, these two the second axle 422c3 are each passed through in the hole of two the second beam 422f2, a second axle 422b1 of mounted movable grating 422c pierces in the hole of sieve fixed strip 422a, and another second axle 422b1 pierces in the hole of sieve activity bar 422d
Compared with prior art, the invention has the beneficial effects as follows: by setting up beam 422f in sieve 422, the impact force that sieve 422 can reduce contact component under the effect of beam 422f, thus reduce noise, reduce the damage of parts, elongate member service life.
Accompanying drawing explanation
Fig. 1 is the rearview of thresher housing;
Fig. 2 is movable grating partial enlargement structural representation in Fig. 1;
Fig. 3 is the schematic cross-section on the left of sorting screen;
Fig. 4 is the mounting structure schematic diagram of fixing grating and movable grating;
Fig. 5 is fixing grating structural representation;
Fig. 6 is movable grating schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The first embodiment of the present invention: as shown in Figure 1-Figure 3, a kind of cleaning sieve for combined harvester 42 comprise screen frame 421, comb, sieve 422, wire gauze sieve 423, by original text plate 424, eccentric shaft 425, sprocket wheel 426, eccentric block 426, eccentric block 427 and umbrella head plate 428, sieve 422 comprises sieve fixed strip 422a, movable grating 422b, fixing grating 422c, sieve activity bar 422d, holder 422e and beam 422f, sieve 422 is arranged on the position of close centre between two side inside screen frame 421, comb is arranged on the end of screen frame 421 corrugated plating 421b, above the end of sieve 422, wire gauze sieve 423 is positioned at the outside bottom screen frame 421, in the below of sieve 422, umbrella head plate 428 is arranged on the outside bottom screen frame 421, after wire gauze sieve 423, to be positioned at inside screen frame 421 between two side near sorting screen 422 afterbody by original text plate 424, eccentric shaft 425 is arranged on the outside of screen frame 421 two side, near the bottom of sorting screen 422 afterbody, sprocket wheel 426 is arranged on the axle head of eccentric shaft 425, eccentric block 427 is arranged on sprocket wheel 426.
Fixing grating 422b two ends have two the first axle 422b1 respectively, these two the first axle 422b1 are each passed through in two holes of a first beam 422f1, mounted fixing grating 422b first axle 422b1 pierces in the hole of sieve fixed strip 422a, and a first axle 422b1 pierces in the hole of sieve activity bar 422d.
Movable grating 422c two ends have two the second axle 422c3 respectively, this second axle 422c3 is each passed through in the hole of two the second beam 422f2, mounted movable grating 422c second axle 422b1 pierces in the hole of sieve fixed strip 422a, and another second axle 422b1 pierces in the hole of sieve activity bar 422d.
Sorting screen 42 is erected on the chute 361 of threshing frame 36 left and right sides, is positioned at the below of threshing cylinder 32 and bolter 34, stirs above in the of 44 in conveying.During work, power source by power transmission to sprocket wheel 426, sprocket wheel 426 drives eccentric shaft 425 to rotate, eccentric shaft 425 is arranged on afterbody lower end on screen frame 421, and by the convert rotational motion of eccentric shaft 425 for moving back and forth, eccentric block 427 is arranged on sprocket wheel 426, make slowing of rising, the speed declined accelerates, thus sorting screen 42 is produced shake up and down, clean from the crop fallen bolter 34.Screen frame about 421 is shaken and is driven sieve 422 mounted thereto to shake, gap is there is unavoidably between the parts sieve of the principal vibration parts on screen frame 421 and generation noise and miscellaneous part connecting axle, owing to setting up beam 422f in sieve 422, the impact force that sieve 422 can reduce contact component under the effect of beam 422f, thus reduction noise, reduce the damage of parts, elongate member service life.
The second embodiment of the present invention: as shown in figs 1 to 6, a kind of cleaning sieve for combined harvester 42 comprise screen frame 421, comb, sieve 422, wire gauze sieve 423, by original text plate 424, eccentric shaft 425, sprocket wheel 426, eccentric block 426, eccentric block 427 and umbrella head plate 428, sieve 422 comprises sieve fixed strip 422a, movable grating 422b, fixing grating 422c, sieve activity bar 422d, holder 422e and beam 422f, sieve 422 is arranged on the position of close centre between two side inside screen frame 421, comb is arranged on the end of screen frame 421 corrugated plating 421b, above the end of sieve 422, wire gauze sieve 423 is positioned at the outside bottom screen frame 421, in the below of sieve 422, umbrella head plate 428 is arranged on the outside bottom screen frame 421, after wire gauze sieve 423, to be positioned at inside screen frame 421 between two side near sorting screen 422 afterbody by original text plate 424, eccentric shaft 425 is arranged on the outside of screen frame 421 two side, near the bottom of sorting screen 422 afterbody, sprocket wheel 426 is arranged on the axle head of eccentric shaft 425, eccentric block 427 is arranged on sprocket wheel 426.
Fixing grating 422b two ends have two the first axle 422b1 respectively, these two the first axle 422b1 are each passed through in two holes of a first beam 422f1, mounted fixing grating 422b first axle 422b1 pierces in the hole of sieve fixed strip 422a, and a first axle 422b1 pierces in the hole of sieve activity bar 422d.
Movable grating 422c two ends have two the second axle 422c3 respectively, this second axle 422c3 is each passed through in the hole of two the second beam 422f2, mounted movable grating 422c second axle 422b1 pierces in the hole of sieve fixed strip 422a, and another second axle 422b1 pierces in the hole of sieve activity bar 422d.
Screen frame 421 is made up of framework 421a, corrugated plating 421b, wind deflector 421c.Corrugated plating 421b comprises corrugated plating 421b1 and lower corrugated plating 421b2.Upper corrugated plating 421b1 frame is between inner side two wall of framework 421a, in the front portion of sorting screen 12, lower corrugated plating 421b2 frame is between inner side two wall of framework 421a, in the bottom inside of sorting screen, be positioned at rear side below corrugated plating 421b1, wire gauze sieve 423 between inner side two wall of framework 421a, in the bottom outside of sorting screen, at the rear of lower corrugated plating 421b2.
Beam 422f is made up of the first beam 422f1 and the second beam 422f2.Fixing grating 422b is made up of the first axle 422b1 and the first sieve bar 422b2.Movable grating 422c is made up of installing plate 422c1, the second axle 422c2, the second sieve bar 422c3.First sieve bar 422c3 and the second sieve bar 422b2 adopts stainless steel.
First sieve bar 422b2 has the first inside groove 422b21, adds the intensity of the first sieve bar 422b2, the first axle 422b1 cuts two sides with the first groove 422b21, and the first axle 422b1 and the first sieve bar 422b2 adopts and is welded to connect.First sieve bar 422b2 is provided with sawtooth 422b22.Second sieve bar 422c3 there is the second inside groove 422c31, add the intensity of the second sieve bar 422c3, second axle 422c2 cuts two sides with the second groove 422c31, second axle 422c2 is through in the hole of installing plate 422c1, and the second axle 422c2, the second sieve bar 422c3 and installing plate 422c1 adopt and be welded to connect.Second sieve bar 422c3 is provided with sawtooth 422c32.
Fixing grating 422b two ends have two the first axle 422b1 respectively, these two the first axle 422b1 are each passed through in two holes of the first beam 422f1, a first axle 422b1 of mounted fixing grating 422b pierces in the hole of sieve fixed strip 422a, and another first axle 422b1 pierces in the hole of sieve activity bar 422d.
Movable grating 422c two ends have two the second axle 422c3 respectively, these two the second axle 422c3 are each passed through in the hole of two the second beam 422f2, a second axle 422b1 of mounted movable grating 422c pierces in the hole of sieve fixed strip 422a, and another second axle 422b1 pierces in the hole of sieve activity bar 422d.
Sorting screen 42 is cleaned crop by vibration when cleaning.The material of beam 422f is that nylon can reduce vibration, reduce the generation of noise.
Holder 422e is arranged on sieve fixed strip 422a, and sieve activity bar 422d bolt is connected to holder 422e.The sole type installing plate 422c1 of the sieve activity bar 422d left and right sides is provided with crescent perforate 422c11, bolt moves around at crescent perforate 422c11, thus drive fixing grating 422b to move around, because in succession sieve fixed strip 422a for fixing grating 422b and movable grating 422c one end, the other end is ined succession sieve activity bar 422d, movable grating 422c motion drives whole sieve activity bar 422d to move, thus achieve the adjustable object in sieve gap, thus solve the effect adopting different gaps to clean to different crops, decrease entrainment loss.
Above-mentioned explanation illustrate and describes the preferred embodiments of the present invention, as previously mentioned, be to be understood that the present invention is not limited to the form disclosed by this paper, should not regard the eliminating to other embodiments as, and can be used for other combinations various, amendment and environment, and can in invention contemplated scope described herein, changed by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change do not depart from the spirit and scope of the present invention, then all should in the protection domain of claims of the present invention.
Claims (14)
1. a cleaning sieve for combined harvester, comprise screen frame (421), sieve (422), it is characterized in that: also comprise beam (422f), sieve (422) arranges and is arranged between two side, screen frame (421) inner side near middle position, the two ends of sieve (422) are connected by axle with beam (422f), and beam (422f) is arranged on screen frame (421).
2. according to cleaning sieve for combined harvester according to claim 1, it is characterized in that: the material of beam (422f) is nylon.
3., according to cleaning sieve for combined harvester according to claim 1, it is characterized in that: also comprise comb, wire gauze sieve (423), by original text plate (424), eccentric shaft (425), sprocket wheel (426), eccentric block (426), eccentric block (427) and umbrella head plate (428); Comb is satisfied with, on dress screen frame (421), to be positioned at the top of the end of sieve (422), and wire gauze sieve (423) is positioned at the outside of screen frame (421) bottom, in the below of sieve (422); Umbrella head plate (428) is arranged on the outside of screen frame (421) bottom, is positioned at after wire gauze sieve (423); Be positioned between two side, screen frame (421) inner side near sorting screen (422) afterbody by original text plate (424), eccentric shaft (425) is arranged on the outside of screen frame (421) two side, near the bottom of sorting screen (422) afterbody, sprocket wheel (426) is arranged on the axle head of eccentric shaft (425), and eccentric block (427) is arranged on sprocket wheel (426).
4. according to cleaning sieve for combined harvester according to claim 3, it is characterized in that: screen frame (421) is by framework (421a), corrugated plating (421b), wind deflector (421c) forms, corrugated plating (421b) comprises corrugated plating (421b1) and lower corrugated plating (421b2), upper corrugated plating (421b1) frame is between inner side two wall of framework (421a), in the front portion of sorting screen (12), lower corrugated plating (421b2) frame is between inner side two wall of framework (421a), in the bottom inside of sorting screen, be positioned at corrugated plating (421b1) below rear side, wire gauze sieve (423) is positioned between inner side two wall of framework (421a), in the bottom outside of sorting screen, at the rear of lower corrugated plating (421b2).
5. according to cleaning sieve for combined harvester according to claim 1, it is characterized in that: sieve (422) comprises fixing grating (422b) and movable grating (422c), fixing grating (422b) is made up of the first axle (422b1) and the first sieve bar (422b2), movable grating (422c) is by installing plate (422c1), second axle (422c2), second sieve bar (422c3) composition, first axle (422b1) is fixedly welded on fixing grating (422b) two ends, second axle (422c2) is fixedly welded on movable grating (422c) two ends, described first axle (422b1) and the second axle (422c2) are installed on the hole of the beam (422f) being positioned at two ends respectively.
6. according to cleaning sieve for combined harvester according to claim 5, it is characterized in that: the first sieve bar (422b2) and the second sieve bar (422c3) adopt stainless steel.
7. according to cleaning sieve for combined harvester according to claim 6, it is characterized in that: the first sieve bar (422b2) has inside the first groove (422b21).
8. according to cleaning sieve for combined harvester according to claim 7, it is characterized in that: the first axle (422b1) is tangent with two sides of the first groove (422b21), and it is by being welded to connect.
9. according to cleaning sieve for combined harvester according to claim 8, it is characterized in that: the first sieve bar (422b2) is provided with sawtooth (422b22).
10. according to cleaning sieve for combined harvester according to claim 9, it is characterized in that: the second axle (422c2) and the second sieve bar (422b3) adopt with installing plate (422c1) and be welded to connect.
11. according to cleaning sieve for combined harvester according to claim 10, it is characterized in that: sieve (422) also comprises sieve fixed strip (422a), sieve activity bar (422d), holder (422e), holder (422e) is arranged on sieve fixed strip (422a), sieve activity bar (422d) bolt is connected to holder (422e), sieve fixed strip (422a) is fixed on screen frame (421), sieve activity bar (422d) left and right sides is provided with sole type installing plate (422c1), sole type installing plate (422c1) top is provided with crescent perforate (422c11), axle (422c2) is arranged in crescent perforate (422c11), and can move around in crescent perforate (422c11), thus drive activity grating (422b) moves around.
12. according to cleaning sieve for combined harvester according to claim 5, it is characterized in that: beam (422f) comprises the first beam (422f1) and the second beam (422f2), the first beam (422f1) and the second beam (422f2) have two holes respectively.
13. according to cleaning sieve for combined harvester according to claim 12, it is characterized in that: fixing grating (422b) two ends have two the first axles (422b1) respectively, these two first axles (422b1) are each passed through in two holes of the first beam (422f1), first axle (422b1) of mounted fixing grating (422b) is pierced in the hole of sieve fixed strip (422a), and another first axle (422b1) pierces in the hole of sieve activity bar (422d).
14. according to cleaning sieve for combined harvester according to claim 12, it is characterized in that: movable grating (422c) two ends have two the second axles (422c3) respectively, these two second axles (422c3) are each passed through in the hole of two the second beams (422f2), second axle (422b1) of mounted movable grating (422c) is pierced in the hole of sieve fixed strip (422a), and another second axle (422b1) pierces in the hole of sieve activity bar (422d).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510053136.3A CN104855057A (en) | 2015-02-02 | 2015-02-02 | Cleaning screen of combine harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510053136.3A CN104855057A (en) | 2015-02-02 | 2015-02-02 | Cleaning screen of combine harvester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104855057A true CN104855057A (en) | 2015-08-26 |
Family
ID=53901590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510053136.3A Pending CN104855057A (en) | 2015-02-02 | 2015-02-02 | Cleaning screen of combine harvester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104855057A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107616004A (en) * | 2017-10-18 | 2018-01-23 | 江苏大学 | Chaotic vibration sorting screen |
| CN108684334A (en) * | 2018-05-03 | 2018-10-23 | 农业部南京农业机械化研究所 | A kind of combined type cuts vertical stream threshing separating cleaning experimental rig |
| CN112317293A (en) * | 2020-09-21 | 2021-02-05 | 江苏大学 | Multi-shaft rolling type cleaning and screening device and rice combine harvester |
-
2015
- 2015-02-02 CN CN201510053136.3A patent/CN104855057A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107616004A (en) * | 2017-10-18 | 2018-01-23 | 江苏大学 | Chaotic vibration sorting screen |
| CN108684334A (en) * | 2018-05-03 | 2018-10-23 | 农业部南京农业机械化研究所 | A kind of combined type cuts vertical stream threshing separating cleaning experimental rig |
| CN112317293A (en) * | 2020-09-21 | 2021-02-05 | 江苏大学 | Multi-shaft rolling type cleaning and screening device and rice combine harvester |
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Application publication date: 20150826 |