CN105359748A - Eccentric threshing mechanism and harvester with same - Google Patents
Eccentric threshing mechanism and harvester with same Download PDFInfo
- Publication number
- CN105359748A CN105359748A CN201510926643.3A CN201510926643A CN105359748A CN 105359748 A CN105359748 A CN 105359748A CN 201510926643 A CN201510926643 A CN 201510926643A CN 105359748 A CN105359748 A CN 105359748A
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- CN
- China
- Prior art keywords
- roller frame
- screen cloth
- threshing
- cylinder
- separating mechanism
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/18—Threshing devices
- A01F12/181—Adjustable threshing mechanisms
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Threshing Machine Elements (AREA)
Abstract
The invention provides an eccentric threshing mechanism and a harvester with the same. The eccentric threshing mechanism comprises a cylinder structure and a screen. The cylinder structure is arranged on the inner side of the screen. At least two threshing gaps different in size are arranged between the outer ring of the cylinder structure and the screen. The sizes of the threshing gaps are increased or decreased or alternately changed in the circumferential direction. The threshing gap between the feeding side of the screen and the cylinder structure is smaller than the threshing gap between the other side of the screen and the cylinder structure. The gaps with the sizes being changed are formed between the cylinder structure and the screen, after millet straw enters a threshing cylinder, the millet straw is rubbed, impacted and threshed through the small tight edges of the threshing gaps and then enters the large loose edges of the threshing gaps, the pressed millet straw becomes fluffy and rolls so that grains mixed in the millet straw can fall out, the grains enter the tight edges to be impacted and threshed, the steps are repeated, the millet straw is beaten and rubbed to the largest extent in the effective threshing distance, and accordingly the threshing effect is improved.
Description
Technical field
The invention belongs to technical field of agricultural machinery, particularly relate to a kind of eccentric type separating mechanism and grain header thereof.
Background technology
Grain combine is called for short combine, gathers in the combination machine machinery of crops exactly, is the operation such as harvesting, threshing, separation cane, the assorted excess of removing that once can complete cereal, directly obtains the harvest machinery of grain from field.
In existing structure, the threshing cylinder of grain header and screen cloth are generally concentric structures, and the threshing cylinder-concave clearance that between threshing cylinder and screen cloth, formation one is fixing, repeatedly carries out friction with screen cloth after millet straw enters and hit, reach the effect of threshing.But such separating mechanism needs longer effective threshing length.For the small harvester of Hills, threshing cylinder is short, and then the coverage of grain threshing is short, causes grain threshing unclean, poor effect.
Summary of the invention
The deficiencies in the prior art in view of the above, the object of the present invention is to provide a kind of eccentric type separating mechanism, to promote threshing efficiency.
For achieving the above object and other relevant objects, technical solution of the present invention is as follows:
A kind of eccentric type separating mechanism; comprise roller frame and screen cloth; described roller frame is arranged at inside screen cloth, has the cylinder-concave clearance of at least two different sizes, described cylinder-concave clearance circumferentially changes from small to big, from large to small or size alternately change between described roller frame outer ring and screen cloth.
Adopt said structure, owing to forming the cylinder-concave clearance of size variation between outside roller frame and inside screen cloth, namely roller frame and screen cloth form eccentric structure, cylinder-concave clearance because of eccentric structure large one side little.After millet straw millet straw enters thrashing cylinder, first carry out friction through the pilled-in selvedge that cylinder-concave clearance is little and hit threshing, turn over after after a segment distance and enter the large slack list of cylinder-concave clearance, the millet straw of compression can become fluffy, and millet straw rolling makes the grain of millet straw inner clip drop out, after turning over a segment distance again, enter again pilled-in selvedge and carry out strike threshing, so repeatedly, in effective threshing distance, millet straw obtains maximized strike and rubs, and then Threshing gets a promotion.
As preferably: the cylinder-concave clearance between described screen cloth feed side and roller frame is less than the cylinder-concave clearance between opposite side and roller frame.
Namely millet straw just carries out extrusion friction after screen cloth feed side enters, and then proceeds to cylinder-concave clearance larger, so can shorten threshing distance further, improves threshing efficiency.
As preferably: described screen cloth is semi-annular shape, and is positioned at below roller frame, and the cylinder-concave clearance between described roller frame lower branch and screen cloth changes from small to big along roller frame rotation direction.Cylinder-concave clearance can be that the change gradually of gradual change type is large, also screen cloth can be divided into several sections, center of circle change between adjacent two sections.Can select according to concrete manufacture demand.
As preferably: described roller frame is circular configuration, and described screen cloth is eccentric structure; Or described roller frame is eccentric structure, screen cloth is semicircular structure.As long as cylinder-concave clearance can be realized to be changed.
As preferably: described screen cloth is divided into two arc sections, the arc section near feed side is arranged with roller frame is concentric, staggers away from the center of circle of feed side arc section and the center of circle of roller frame.Be preferably two quadrant segmental arcs to form, stagger in the center of circle of two quadrant segmental arcs, easily manufactured.
As preferably: described roller frame is nail tooth drum, comprise axis, supporting disk, support column and spike-tooth, described supporting disk is arranged on axis two ends, described support column is arranged on supporting disk, and be distributed in axis periphery abreast, described spike-tooth is arranged radially on support column, and described cylinder-concave clearance is the distance between spike-tooth outer end and screen cloth inwall.
As preferably: be provided with annular backup pad in the middle part of described roller frame, described annular backup pad and every root support column are fixed, and described axis is set with power input gear.
As preferably: described spike-tooth outer end has the bending segment of an Off-Radial, and this bending segment is towards the rotation direction of roller frame.
As preferably: described screen cloth is concave grate, and described concave grate comprises screen body and the multiple arcs for fixed grit body, and be provided with rib vertically inside described screen cloth, described rib circumferentially distributes, and is pressed in screen body.
The present invention provides a kind of grain header simultaneously, comprises above-mentioned a kind of eccentric type separating mechanism.
As mentioned above, the invention has the beneficial effects as follows: the gap of size variation will be configured with between roller frame and screen cloth, after millet straw enters thrashing cylinder, first carry out friction through the pilled-in selvedge that cylinder-concave clearance is little and hit threshing, then the slack list that cylinder-concave clearance is large is entered, the millet straw compressed can become fluffy, millet straw rolling makes the grain of millet straw inner clip drop out, then enter again pilled-in selvedge and carry out strike threshing, so repeatedly, in effective threshing distance, millet straw obtains maximized strike and rubs, and then Threshing gets a promotion.Make effective threshing Distance Shortened of millet straw, but reach identical Threshing, improve threshing efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is end view of the present invention.
Piece mark explanation
1 roller frame
11 axis
12 supporting disks
13 support columns
14 spike-tooths
15 annular backup pads
2 screen clothes
21 screen body
22 arcs
23 ribs
Embodiment
By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this specification can understand other advantages of the present invention and effect easily.
As shown in Figure 1 to Figure 2; a kind of eccentric type separating mechanism; comprise roller frame 1 and screen cloth 2; it is peripheral that screen cloth 2 is arranged at roller frame 1; roller frame 1 has at least a part to be surrounded by screen cloth 2; there is between roller frame 1 outer ring and screen cloth 2 cylinder-concave clearance of at least two different sizes, described cylinder-concave clearance changes from small to big along roller frame 1 circumference, from large to small or size alternately change.
In this example, in order to shorten threshing distance further, improve threshing efficiency, screen cloth 2 feed side and the cylinder-concave clearance L1 between roller frame 1 are less than the cylinder-concave clearance L2 between opposite side (side relative with feed side) and roller frame 1.Namely millet straw just carries out extrusion friction after screen cloth 2 feed side enters, and then proceeds to cylinder-concave clearance larger.In other embodiments, cylinder-concave clearance also can be that feed side is large, and opposite side is little; Or alternately changed to opposite side cylinder-concave clearance size by feed side.
Described screen cloth 2 is semi-annular shape, and roller frame 1 lower portion is in screen cloth 2, and the cylinder-concave clearance between described roller frame 1 lower branch and screen cloth 2 changes from small to big along roller frame 1 rotation direction.Cylinder-concave clearance can be that the change gradually of gradual change type is large, also screen cloth 2 can be divided into several sections, center of circle change between adjacent two sections.Can select according to concrete manufacture demand.
For the ease of manufacturing in this example, roller frame 1 is circular configuration, and described screen cloth 2 is eccentric structure; Screen cloth 2 is circumferentially divided into two arc sections, and the arc section near feed side is arranged with roller frame 1 is concentric, and stagger away from the center of circle of feed side arc section and the center of circle of roller frame 1, its center of circle radius ratio roller frame 1 is large.Be preferably two quadrant segmental arcs to form, stagger in the center of circle of two quadrant segmental arcs, easily manufactured.
In other embodiments, can roller frame 1 be eccentric structure, screen cloth 2 be circular configuration.As long as cylinder-concave clearance can be realized to be changed.
Further, roller frame 1 is nail tooth drum, comprise axis 1, supporting disk 13, support column and spike-tooth 14, supporting disk 13 is arranged on axis 1 two ends, support column two ends are arranged in supporting disk 13 outer rim, and it is peripheral to be distributed in axis 1 abreast, described spike-tooth 14 is arranged radially on support column, and described cylinder-concave clearance is the distance between spike-tooth 14 outer end and screen cloth 2 inwall.
In order to improve the intensity of roller frame 1, be provided with annular backup pad 15 in the middle part of roller frame 1, annular backup pad 15 and every root support column are fixed, and described axis 1 is set with power input gear.Spike-tooth 14 outer end has the bending segment of an Off-Radial, and this bending segment is towards the rotation direction of roller frame 1.
Described screen cloth 2 is concave grate, concave grate comprises screen body 21 and the multiple arcs 22 for fixed grit body 21, rib 23 is provided with vertically inside screen cloth 2, described rib 23 circumferentially distributes, and be pressed in screen body 21, fixed grit 2 on the one hand, can play good squeezing action to millet straw on the other hand.
The present invention also provides a kind of grain header, comprises above-mentioned a kind of eccentric type separating mechanism, certainly also comprises other conventional structures.
The present invention will be configured with the gap of size variation between roller frame 1 and screen cloth 2, after millet straw enters thrashing cylinder, first carry out friction through the pilled-in selvedge that cylinder-concave clearance is little and hit threshing, then enter the slack list that cylinder-concave clearance is large, the millet straw of compression can become fluffy, millet straw rolling makes the grain of millet straw inner clip drop out, then enter again pilled-in selvedge and carry out strike threshing, so repeatedly, in effective threshing distance, millet straw obtains maximized strike and rubs, and promotes Threshing.
Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that all equivalences that the knowledgeable completes under the disclosed spirit of non-threshing and technological thought are modified or change, must be contained by claim of the present invention.
Claims (10)
1. an eccentric type separating mechanism; comprise roller frame and screen cloth; described roller frame is arranged at inside screen cloth; it is characterized in that: the cylinder-concave clearance between described roller frame outer ring and screen cloth with at least two different sizes, described cylinder-concave clearance circumferentially changes from small to big, from large to small or size alternately change.
2. a kind of eccentric type separating mechanism according to claim 1, is characterized in that: the cylinder-concave clearance between described screen cloth feed side and roller frame is less than the cylinder-concave clearance between opposite side and roller frame.
3. a kind of eccentric type separating mechanism according to claim 1, is characterized in that: described screen cloth is semi-annular shape, and is positioned at below roller frame, and the cylinder-concave clearance between described roller frame lower branch and screen cloth changes from small to big along roller frame rotation direction.
4. a kind of eccentric type separating mechanism according to claim 1, it is characterized in that: described roller frame is circular configuration, described screen cloth is eccentric structure; Or described roller frame is eccentric structure, screen cloth is semicircular structure.
5. a kind of eccentric type separating mechanism according to claim 1-4 any one; it is characterized in that: described screen cloth is divided into two arc sections; arc section near feed side is arranged with roller frame is concentric, staggers away from the center of circle of feed side arc section and the center of circle of roller frame.
6. a kind of eccentric type separating mechanism according to claim 1; it is characterized in that: described roller frame is nail tooth drum; comprise axis, supporting disk, support column and spike-tooth; described supporting disk is arranged on axis two ends; described support column is arranged on supporting disk; and being distributed in axis periphery abreast, described spike-tooth is arranged radially on support column, and described cylinder-concave clearance is the distance between spike-tooth outer end and screen cloth inwall.
7. a kind of eccentric type separating mechanism according to claim 6, is characterized in that: be provided with annular backup pad in the middle part of described roller frame, and described annular backup pad and every root support column are fixed, and described axis is set with power input gear.
8. a kind of eccentric type separating mechanism according to claim 6, it is characterized in that: described spike-tooth outer end has the bending segment of an Off-Radial, this bending segment is towards the rotation direction of roller frame.
9. a kind of eccentric type separating mechanism according to claim 1; it is characterized in that: described screen cloth is concave grate; described concave grate comprises screen body and the multiple arcs for fixed grit body; rib is provided with vertically inside described screen cloth; described rib circumferentially distributes, and is pressed in screen body.
10. a grain header, is characterized in that: comprise a kind of eccentric type separating mechanism described in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510926643.3A CN105359748A (en) | 2015-12-11 | 2015-12-11 | Eccentric threshing mechanism and harvester with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510926643.3A CN105359748A (en) | 2015-12-11 | 2015-12-11 | Eccentric threshing mechanism and harvester with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105359748A true CN105359748A (en) | 2016-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510926643.3A Pending CN105359748A (en) | 2015-12-11 | 2015-12-11 | Eccentric threshing mechanism and harvester with same |
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| Country | Link |
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| CN (1) | CN105359748A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111480460A (en) * | 2020-04-21 | 2020-08-04 | 王小珍 | Straw screening installation |
-
2015
- 2015-12-11 CN CN201510926643.3A patent/CN105359748A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111480460A (en) * | 2020-04-21 | 2020-08-04 | 王小珍 | Straw screening installation |
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Application publication date: 20160302 |
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