CN109983927B - Screening device and harvester - Google Patents
Screening device and harvester Download PDFInfo
- Publication number
- CN109983927B CN109983927B CN201711470207.5A CN201711470207A CN109983927B CN 109983927 B CN109983927 B CN 109983927B CN 201711470207 A CN201711470207 A CN 201711470207A CN 109983927 B CN109983927 B CN 109983927B
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- China
- Prior art keywords
- piece
- hooking
- screen
- screening device
- connecting piece
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Classifications
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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
- A01F12/44—Grain cleaners; Grain separators
- A01F12/446—Sieving means
- A01F12/448—Sieve adjusting means
Abstract
The invention provides a screening device and a harvester, relates to the technical field of agricultural machinery, and aims to solve the problem that the screening quality of the screening device of the harvester is poor. The screening device includes: the device comprises fixing pieces, screen plates and an adjusting mechanism, wherein the number of the screen plates is multiple, each screen plate is arranged on the fixing piece at intervals, each screen plate comprises a connecting piece, screen plates and a hooking piece, the connecting piece is provided with the multiple screen plates, one end of each hooking piece is hinged with the connecting piece, and the other end of each hooking piece is hooked on the adjacent other connecting piece; the sieve plate is rotationally connected with the fixing piece, and the adjusting mechanism is connected with the connecting piece and used for driving the sieve plate to rotate. The screening device is applied to a harvester, the opening and closing degree of a screen plate of the screening device is adjustable, and the opening is divided into a plurality of areas through the hooking piece, so that the cleaning quality is improved.
Description
Technical Field
The invention relates to the technical field of agricultural machinery, in particular to a screening device and a harvester.
Background
At present, screening devices of a cleaning system of a combine harvester are various, and a grid screen, a punching screen and a fish scale screen are commonly used, and are usually carried out in a mode of wind power and vibration screening devices when screening operation is carried out. However, since a part of the foreign matter (e.g., short stalks) and the grain have similar suspension speed, it is difficult to remove the foreign matter by wind alone.
When the grid screen or the punching screen is used in the cleaning system, sundries larger than the aperture size of the grid screen or the punching screen can be removed, and as the apertures of the grid screen or the punching screen are fixed, screening devices with different sizes need to be replaced for different crops, otherwise, sundries cannot be removed effectively. When the fish scale sieve is used in the cleaning system, the opening of the fish scale sieve can be adjusted, so that the sieving device is not required to be replaced for different crops, and the opening and closing degree of the fish scale sieve is only required to be adjusted.
However, when the sieve plates of the fish scale sieve are opened, a larger gap is formed between the adjacent sieve plates, and part of sundries fall from the gap, so that the cleaning quality is reduced.
Disclosure of Invention
The invention aims to provide a screening device so as to solve the technical problem of lower cleaning quality of the screening device in the prior art.
The screening device provided by the invention comprises: the device comprises fixing pieces, screen plates and an adjusting mechanism, wherein the number of the screen plates is multiple, each screen plate is arranged on the fixing piece at intervals, each screen plate comprises a connecting piece, screen plates and a hooking piece, the connecting piece is provided with the multiple screen plates, one end of each hooking piece is hinged with the connecting piece, and the other end of each hooking piece is hooked on the adjacent other connecting piece; the sieve plate is rotationally connected with the fixing piece, and the adjusting mechanism is connected with the connecting piece and used for driving the sieve plate to rotate.
Further, the number of the hooking pieces is multiple, and the hooking pieces are uniformly arranged on the connecting piece.
Further, on the connecting piece, the hooking piece and the sieve sheet are arranged in a staggered way.
Further, on each connecting piece, the setting direction of the hooking pieces is the same.
Further, in any of the above technical solutions, the adjusting mechanism includes an adjusting rod, the adjusting rod is perpendicular to the connecting pieces, and each connecting piece is connected with the adjusting rod respectively.
Further, the adjusting mechanism further comprises an adjusting handle, wherein the adjusting handle comprises a rod part and a handle part which are perpendicular to each other and are connected, and the rod part is perpendicular to the connecting piece and is meshed with the connecting piece.
Further, the connecting piece comprises a connecting shaft and a rotating shaft, the sieve sheet is respectively connected with the rotating shaft and the connecting shaft, and the connecting shaft is rotationally connected with the adjusting pull rod.
Further, the middle area of the connecting shaft is rotatably connected with the adjusting pull rod.
Further, in any of the above technical solutions, the hooking member is detachably connected to the connecting member.
Compared with the prior art, the screening device provided by the invention has the following advantages:
in the using process of the screening device, openings for crops to pass through are formed between the adjacent screening sheets, and the deflection angle of each screening plate is adjusted through the adjusting mechanism, so that the opening degree of the openings between the adjacent screening sheets is adjusted, and different opening sizes are adjusted according to different types of screened crops. Because the hooking piece is arranged in the sieve plates, one end of the hooking piece is positioned on the connecting piece of one sieve plate, and the other end of the hooking piece is positioned on the connecting piece of the other sieve plate, so that an opening between two adjacent sieve plates is at least divided into two areas, at least two openings are formed between the two adjacent sieve plates, and sundries with smaller size can be blocked, so that the cleaning quality is improved. Because one end of the hooking piece is hinged with the connecting piece of one screen plate, and the other end of the hooking piece is hooked with the connecting piece of the other screen plate, the hooking piece is still connected between the two connecting pieces in the process of adjusting the deflection angle of the screen plate, and the swing of the screen plate cannot be influenced.
Therefore, compared with the screening device in the prior art, the screening plate of the screening device provided by the invention can be adjusted in angle by the adjusting mechanism, so that the size of the opening is adjusted, and the opening between the adjacent screening plates is smaller due to the fact that the hooking piece is connected between the adjacent connecting pieces, so that the size of the opening can be adjusted from the two aspects of the deflection angle of the screening plate and the setting position of the hooking piece, thereby being beneficial to adjusting according to the types of crops, discharging sundries with smaller size and achieving better cleaning quality.
Another object of the present invention is to provide a harvester, which solves the technical problem of low cleaning quality of the screening device in the harvester in the prior art.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a harvester, includes the cleaning system, be provided with the sieving mechanism of above-mentioned technical scheme in the cleaning system.
The harvester has the same advantages as the screening device compared with the prior art, and the description is omitted here.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a screening apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a hooking member in a screening device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram II of a hooking member in the screening device according to the embodiment of the present invention;
fig. 4 is a schematic structural view of a hooking member in a screening device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an adjusting mechanism in a screening apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an adjusting mechanism in a screening device according to an embodiment of the present invention.
In the figure:
1-a fixing piece; 2-a hooking member; 21-hooks;
22-hinge; 23-a limiting part; 3-sieving sheets;
4-adjusting the handle; 41-a stem; 42-handle;
5-adjusting a pull rod; 61-a rotating part; 62-gear;
63-connecting shaft.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 6, a screening apparatus provided in an embodiment of the present invention includes: the device comprises fixing pieces 1, screen plates and an adjusting mechanism, wherein the number of the screen plates is multiple, each screen plate is arranged on the fixing piece 1 at intervals, each screen plate comprises a connecting piece, screen plates 3 and a hooking piece 2, the connecting piece is provided with the plurality of screen plates 3, one end of the hooking piece 2 is hinged with the connecting piece, and the other end of the hooking piece 2 is structured on the other adjacent connecting piece; the sieve plate is rotationally connected with the fixing piece 1, and the adjusting mechanism is connected with the connecting piece and is used for driving the sieve plate to rotate.
In the use process of the screening device provided by the embodiment of the invention, openings for allowing crops to pass through are formed between the adjacent screening sheets 3, and the deflection angle of each screen plate is adjusted through the adjusting mechanism, so that the opening and closing degree of the openings between the adjacent screening sheets 3 is adjusted, and different opening sizes are adjusted according to different types of screened crops.
Because the hooking piece 2 is arranged in the sieve plates, one end of the hooking piece 2 is positioned on the connecting piece of one sieve plate, and the other end of the hooking piece 2 is positioned on the connecting piece of the other sieve plate, so that an opening between two adjacent sieve plates is at least divided into two areas, at least two openings are formed between the two adjacent sieve plates, and sundries with smaller size can be blocked, so that the cleaning quality is improved.
Because the one end of the hooking piece 2 is hinged with the connecting piece of one sieve plate, and the other end is hooked with the connecting piece of the other sieve plate, the hooking piece 2 is still connected between the two connecting pieces in the process of adjusting the deflection angle of the sieve plate, and the swing of the sieve plate cannot be influenced.
Therefore, compared with the screening device in the prior art, the screening plate of the screening device provided by the embodiment of the invention can adjust the angle by the adjusting mechanism, so that the size of the opening is adjusted, and the opening size between the adjacent screening plates is smaller because the hooking piece 2 is connected between the adjacent connecting pieces, so that the size of the opening can be adjusted from the two aspects of the deflection angle of the screening plate and the setting position of the hooking piece 2, thereby being beneficial to adjusting according to the types of crops, discharging sundries with smaller size and achieving better cleaning quality.
As shown in fig. 1, in one specific implementation manner of this embodiment, the fixing member 1 is a rectangular frame structure, and the screen plate is installed in the middle of the fixing member 1 and is rotatably connected with the fixing member 1.
When the number of the hooking members 2 hinged on one screen plate is one, two adjacent screen plates are respectively called a first screen plate and a second screen plate, one end of the hooking member 2 is hinged with the first screen plate, and the other end of the hooking member 2 is hooked with the second screen plate, so that the hooking member 2 divides the space between the first screen plate and the second screen plate into two openings.
When the number of the hooking members 2 hinged on the first screen plate is plural, the space between the first screen plate and the second screen plate can be divided into more openings, so that the size of the openings is smaller.
In a preferred implementation of this embodiment, the number of the hooking elements 2 is plural, and the plural hooking elements 2 are uniformly arranged on the connection element. Further, on the connecting piece, the hooking pieces 2 are staggered with the screen pieces 3. That is, the plurality of hooking members 2 are uniformly and alternately arranged on the connection member, and one screen sheet 3 is provided between two adjacent hooking members 2.
Further, on each connecting member, the hooking members 2 are arranged in the same direction. For example, in the direction shown in fig. 1, from bottom to top, the screen 3 is referred to as a first screen, a second screen, a third screen … …, an N-1 screen and an N-1 screen, respectively, then the hook 2 on the first screen is hooked on the second screen, the hook 2 on the N-1 screen of … … on the third screen is hooked on the N-1 screen, the hook 2 on the N-1 screen may be hooked on the fixing element 1, or a stop lever is provided at the upper end of the N-th screen, and the hook 2 on the N-th screen is hooked on the stop lever.
There are various arrangements of the adjusting mechanism, for example, as shown in fig. 5, in one of the arrangements, the adjusting mechanism includes an adjusting lever 5, the adjusting lever 5 is perpendicular to the connecting members, and each connecting member is connected to the adjusting lever 5.
Specifically, the connecting piece includes connecting axle 63 and pivot, and sieve piece 3 is connected with pivot and connecting axle 63 respectively, and connecting axle 63 rotates with adjusting lever 5 to be connected, and further, the middle part region of sieve piece 3 is empty to be overlapped in the pivot, and the one end of sieve piece 3 is connected on connecting axle 63.
The connection shaft 63 may be rotatably connected to the adjusting rod 5 by a plurality of through holes formed at axial intervals of the adjusting rod 5 as shown in fig. 5, and the connection shaft 63 passes through the corresponding through holes. To facilitate pulling of the connecting shaft 63, the middle region of the connecting shaft 63 is rotatably connected to the adjusting lever 5, i.e. the middle region of the connecting shaft 63 is located in the through hole.
Or, the connecting piece includes connecting axle 63 and pivot, and sieve piece 3 is connected with pivot and connecting axle 63 respectively, and connecting axle 63 and adjusting lever 5 fixed connection, and further, the middle part region of sieve piece 3 is empty to be overlapped in the pivot, and the one end of sieve piece 3 is empty to be overlapped in connecting axle 63.
So designed, when the adjusting pull rod 5 moves along the axial direction, one end of the adjusting pull rod 5 drives one end of the connecting shaft 63 to move, and because the middle area domain of the sieve sheet 3 is sleeved on the rotating shaft, when one end of the connecting shaft 63 drives one end of the sieve sheet 3 to move, the sieve sheet 3 swings around the rotating shaft.
In addition to the above arrangement, as shown in fig. 6, in another specific arrangement, the adjustment mechanism includes an adjustment lever 5, the adjustment lever 5 is perpendicular to the connection members, and each connection member is engaged with the adjustment lever 5. Further, the connecting piece comprises a rotating part 61, the rotating part 61 is sleeved with a gear 62, and the gear 62 is meshed with the adjusting pull rod 5.
Specifically, the rotating part 61 is rotationally connected with the fixing piece 1, the sieve sheet 3 is fixedly connected with the rotating part 61, the rotating part 61 is fixedly connected with the gear 62, the adjusting pull rod 5 is provided with teeth along the axial direction thereof, the gear 62 is meshed with the teeth on the adjusting pull rod 5, and when the adjusting pull rod 5 moves along the axial direction, the teeth on the adjusting pull rod 5 drive the gear 62 to rotate, so that the rotating part 61 is driven to rotate, and the sieve sheet 3 swings. In particular, the rotating portion 61 is located in a central region of the connector in the longitudinal direction.
Further, as shown in fig. 5 and 6, in any of the above embodiments, in order to facilitate moving the adjustment lever 5 in the axial direction, the adjustment mechanism further includes an adjustment handle 4, and the adjustment handle 4 includes a lever portion 41 and a shank portion 42 that are perpendicular to each other and are connected, the lever portion 41 is rotatably connected (can be connected by a bearing) to the fixing member 1, and the lever portion 41 is perpendicular to and engaged with the connecting member. When the handle 42 is rotated, the handle 42 drives the lever 41 to rotate, teeth are arranged on the lever 41, and the teeth of the lever 41 are meshed with the teeth on the adjusting pull rod 5, so that the adjusting pull rod 5 is driven to move axially.
Further, in a specific implementation manner of this embodiment, the hooking element 2 is detachably connected to the connecting element. So designed, the size of the opening between adjacent screen panels can be adjusted by changing the number or position of the hooks 2 mounted on the screen panels.
As shown in fig. 2 to 4, the hooking member 2 has various arrangement modes, specifically, the hooking member 2 includes a hinge portion 22 and a hook 21, the hinge portion 22 may be disposed at one end of the hooking member 2 (as shown in fig. 2 and 4), or may be disposed in a middle area of the hooking member 2 (as shown in fig. 3), the hook 21 is used for hooking an adjacent screen plate, and in order to avoid unhooking, a limit portion 23 (as shown in fig. 3) may be disposed on the hook 21, and the limit portion 23 forms a barb to prevent unhooking of the hook 21.
The embodiment of the invention also provides a harvester which comprises a cleaning system, wherein the cleaning system is internally provided with the screening device according to the embodiment.
Compared with the harvester in the prior art, the sieve plate of the harvester provided by the embodiment of the invention can be adjusted in angle by the adjusting mechanism, so that the size of the opening is adjusted, and the opening between the adjacent sieve plates is smaller due to the connecting piece 2, so that the size of the opening can be adjusted from the two aspects of the deflection angle of the sieve plate and the setting position of the hooking piece 2, thereby being beneficial to adjusting according to the types of crops, discharging sundries with smaller size and achieving better cleaning quality.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims below, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (10)
1. A screening apparatus, comprising: the device comprises fixing pieces, screen plates and an adjusting mechanism, wherein the number of the screen plates is multiple, each screen plate is arranged on the fixing piece at intervals, each screen plate comprises a connecting piece, screen plates and a hooking piece, the connecting piece is provided with the multiple screen plates, one end of each hooking piece is hinged with the connecting piece, and the other end of each hooking piece is hooked on the adjacent other connecting piece; the sieve plate is rotationally connected with the fixing piece, and the adjusting mechanism is connected with the connecting piece and used for driving the sieve plate to rotate;
the hooking piece comprises a hinge part and a hook, the hinge part is hinged with the connecting piece, and the hook is used for hooking the adjacent sieve plate;
a limiting part is arranged on the hook; the limiting part is formed into a reverse hook structure so as to prevent the hook from unhooking.
2. The screening device of claim 1, wherein the number of the hooking members is plural, and the plural hooking members are uniformly arranged on the connecting member.
3. The screening apparatus of claim 2, wherein the hooks are staggered with the screen sheet on the connector.
4. The screening device of claim 2, wherein the hooking members are disposed in the same direction on each of the connecting members.
5. The screening apparatus of claim 1, wherein the adjustment mechanism comprises an adjustment bar perpendicular to the connectors, each of the connectors being connected to the adjustment bar.
6. The screening device of claim 5, wherein the adjustment mechanism further comprises an adjustment handle comprising a stem portion and a handle portion perpendicular to each other and connected, the stem portion being perpendicular to and engaged with the connector.
7. The screening device of claim 5, wherein the connector comprises a connecting shaft and a rotating shaft, the screen sheet is connected with the rotating shaft and the connecting shaft respectively, and the connecting shaft is rotatably connected with the adjusting pull rod.
8. The screening apparatus of claim 7, wherein a central region of the connecting shaft is rotatably coupled to the adjustment lever.
9. The screening device of claim 1, wherein the hooking element is detachably connected to the connecting element.
10. A harvester comprising a cleaning system having a screening apparatus according to any one of claims 1-9 disposed therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711470207.5A CN109983927B (en) | 2017-12-29 | 2017-12-29 | Screening device and harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711470207.5A CN109983927B (en) | 2017-12-29 | 2017-12-29 | Screening device and harvester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109983927A CN109983927A (en) | 2019-07-09 |
| CN109983927B true CN109983927B (en) | 2023-09-12 |
Family
ID=67108426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711470207.5A Active CN109983927B (en) | 2017-12-29 | 2017-12-29 | Screening device and harvester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109983927B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Also Published As
| Publication number | Publication date |
|---|---|
| CN109983927A (en) | 2019-07-09 |
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