CN114731851B - Adjustable cleaning system of soybean harvester - Google Patents
Adjustable cleaning system of soybean harvester Download PDFInfo
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- CN114731851B CN114731851B CN202210175825.1A CN202210175825A CN114731851B CN 114731851 B CN114731851 B CN 114731851B CN 202210175825 A CN202210175825 A CN 202210175825A CN 114731851 B CN114731851 B CN 114731851B
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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
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
- A01D41/12—Details of combines
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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
- A01F12/442—Rotary cleaners
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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
- A01F12/444—Fanning means
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvesting Machines For Specific Crops (AREA)
Abstract
The invention relates to an adjustable cleaning system of a soybean harvester, and belongs to the technical field of agricultural machinery. The main shaft of the uniform flow fan of the system is provided with a reducing belt wheel and is in transmission connection with a driving belt wheel through a transmission belt with a tensioning and adjusting mechanism; the front grid screen and the rear grid screen in the vibrating screen of the system comprise screen sheets which are arranged in the middle of the frame and distributed in the middle; the side plates of the rear grid screen are provided with hinge holes and abdication holes which are uniformly distributed at intervals; the upper ends of the screen sheets of each rear grid screen are respectively hinged with the corresponding hinge holes, and the lower ends of the screen sheets extend out of the corresponding abdicating holes respectively and are then hinged with the corresponding holes of the outer connecting rods to form a parallel four-connecting rod mechanism; one of the screen sheets of the rear grid screen is also fixedly connected and movably connected with the upper end and the lower end of the rear adjusting handle respectively. After the invention is adopted, the rotating speed of the fan and the rear grid screen can be adjusted as required, so that the invention is suitable for soybean harvesting, adjusting and cleaning of different varieties, planting modes and operation conditions, and can obviously improve the cleaning efficiency and quality of soybean harvesting and reduce cleaning loss.
Description
Technical Field
The invention relates to a header of a harvester, in particular to an adjustable cleaning system of a soybean harvester, and belongs to the technical field of agricultural machinery.
Background
According to the knowledge of the applicant, the existing soybean harvest basically adopts a rice-wheat combine harvester, and by means of the traditional fish scale sieve structure, the soybean harvest is cleaned in a way of being not suitable for different varieties, different planting modes and different working conditions due to the fact that the cleaning efficiency is low, the cleaning quality is poor, the mixing of straws and impurities is high, the cleaning loss is large, and the cleaning operation parameters are not adjustable. The conclusion that applicants have made through long-term studies and experiments is: the most important parameters affecting the cleaning operation quality of the combine harvester are the rotation speed of the fan and the inclination angle of the vibrating screen.
The search shows that the Chinese patent document with the application number of 201910051798.5 discloses a threshing and cleaning test bed suitable for crops with high water content, such as corn, wheat, soybean and the like, and comprises an operation condition and an operation effect of working components such as a simulated test crop feeding system, a threshing system, a cleaning system, a chopping and throwing system and the like. According to the cleaning system, although the motor is adopted to realize the rotation speed adjustment of the fan, the adjustment of the inclination angle of the vibrating screen is not considered, so that the cleaning system is difficult to be suitable for soybean harvesting of different varieties, planting modes and working conditions, and the cleaning system has the defects of improving the cleaning efficiency and quality of soybean harvesting and reducing cleaning loss. And it adopts a plurality of converters and a plurality of motors, can only be used for indoor test bench, is not applicable to the combine harvester of field operation.
Disclosure of Invention
The invention aims at: aiming at the problems in the prior art, the adjustable cleaning system of the soybean harvester suitable for different varieties, planting modes and working conditions is provided, so that the cleaning efficiency and quality of soybean harvesting are improved, and the cleaning loss is reduced.
In order to achieve the above purpose, the basic technical scheme of the adjustable cleaning system of the soybean harvester is as follows: comprises a cleaning chamber frame, a uniform flow fan arranged below the feeding end of the cleaning chamber frame, and a vibrating screen arranged in the middle layer of the cleaning chamber frame;
the main shaft of the uniform flow fan is provided with a reducing belt wheel and is in transmission connection with the driving belt wheel through a transmission belt with a tensioning and adjusting mechanism;
the vibrating screen comprises a front grid screen, a tail screen and a rear grid screen which are sequentially arranged at the upper part of the screen frame;
the front grid screen and the rear grid screen comprise frames mainly formed by surrounding a front plate, side plates on two sides and a rear plate, and screen sheets arranged in the frames and distributed in the middle;
the side plate of the rear grid screen is provided with hinge holes which are uniformly distributed in an upper row at intervals and abdication holes which are correspondingly distributed in a lower row at intervals; the upper ends of the screen sheets of each rear grid screen are respectively hinged with the corresponding hinging holes, and the lower ends of the screen sheets extend out of the corresponding abdicating holes respectively and are then hinged with the corresponding holes of the outer connecting rods to form a parallel four-connecting rod mechanism; the upper end of one of the screen sheets of the rear grid screen is fixedly connected with the upper end of the rear adjusting handle, and the middle part of the rear adjusting handle is movably connected with the lower end of one of the screen sheets of the rear grid screen.
The invention is further perfected that the reducing belt wheel consists of a pair of reducing wheels which have axial approaching trend under the action of the elastic piece and have opposite transmission conical surfaces; the tensioning adjusting mechanism comprises a tensioning adjusting rod fixing frame which is provided with a gear and is fixed on the cleaning chamber frame, and a tensioning wheel connecting plate of which the two ends respectively support a floating tensioning wheel and a fixed shaft tensioning wheel; the floating tensioning wheel and the fixed shaft tensioning wheel are respectively positioned at the inner side and the outer side of the transmission belt; the tensioning wheel connecting plate is fixedly connected with the lower end of the gear lever, and the upper end of the gear lever is connected with a compression lever sleeve which can axially and relatively stretch; the lower end of the compression rod sleeve is provided with a structure clamped into the gear; when the gear of the compression rod sleeve clamped on the tensioning adjustment rod fixing frame is changed, the meshing radius of the variable-diameter belt pulley and the variable-diameter belt pulley is changed through the tension force of the floating tensioning wheel and the fixed-shaft tensioning wheel variable-transmission belt.
After the invention is adopted, in the threshing process, the transmission diameter of the reducing belt wheel can be conveniently changed by adjusting the tensioning and adjusting mechanism, and meanwhile, the inclination angle of the sieve sheet of the rear grid sieve can be changed by means of the rear adjusting handle, so that the rotating speed of the fan and the rear grid sieve can be adjusted as required: when the loss is too large and the impurity content is not high, the rotating speed is reduced, and the inclination angle of the sieve sheet is reduced; when the loss is small and the impurity content is high, the rotating speed is increased, and the inclination angle of the sieve sheet is increased. Therefore, the soybean harvester is suitable for soybean harvesting, regulating and cleaning of different varieties, planting modes and working conditions, is very suitable for a combine harvester for field operation, and can remarkably improve the cleaning efficiency and quality of soybean harvesting and reduce cleaning loss.
The invention is further perfected that the side plate of the front grid screen is provided with hinge holes which are uniformly distributed at intervals in the upper row and abdication holes which are correspondingly distributed at intervals in the lower row; the upper ends of the screen sheets of the front grid screen are respectively hinged with the corresponding hinging holes, and the lower ends of the screen sheets extend out of the corresponding abdicating holes respectively to be hinged with the outer connecting rods, so that a parallel four-connecting rod mechanism is formed; the upper end of one of the sieve plates of the front grid sieve is fixedly connected with the upper end of the front adjusting handle, and the middle part of the front adjusting handle is movably connected with the lower end of one of the sieve plates of the front grid sieve and is in linkage connection with the rear adjusting handle. Therefore, the inclination angle of the sieve plate of the front grid sieve can be adjusted as appropriate, which is more beneficial to improving the cleaning efficiency and quality of soybean harvest and reducing the cleaning loss.
Drawings
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic perspective view of a first embodiment of the present invention.
Fig. 2 is a schematic perspective view of the vibrating screen portion of the embodiment of fig. 1.
Fig. 3 is a schematic perspective view of another view of the shaker section of the embodiment of fig. 1.
Fig. 4 is a schematic perspective view of the reducing pulley of the embodiment of fig. 1.
Fig. 5 is a schematic perspective view of the tensioning adjustment mechanism in the embodiment of fig. 1.
Fig. 6 is a schematic perspective view of the tensioning adjustment lever fixing frame of the embodiment of fig. 1.
Fig. 7 is a schematic perspective view of the rear grid screen in the embodiment of fig. 1.
Fig. 8 is a schematic view of an exploded perspective view of the rear grid screen of the embodiment of fig. 1.
Fig. 9 is a schematic perspective view of the tailing screen in the embodiment of fig. 1.
Fig. 10 is a schematic perspective view of a grid screen according to a second embodiment of the present invention in fig. 1.
Detailed Description
Example 1
The adjustable cleaning system of the soybean harvester is applied to a soybean combine harvester, and basically comprises a uniform flow fan 2 and a middle layer arranged vibrating screen 10 below a feeding end of a cleaning chamber frame 1 as shown in fig. 1. The main shaft of the uniform flow fan 2 is provided with a reducing belt wheel 3, and is in transmission connection with a driving belt wheel 8 through a transmission belt 6 with a tensioning and adjusting mechanism 4.
The variable diameter pulley 3 is shown in fig. 5, a pair of variable diameter pulleys 3-1 with opposite driving conical surfaces are connected together by a bolt and nut 3-3 which performs an axial limiting function, and have an axial approaching tendency by an elastic member 3-2 connected between them, and the maximum distance is limited by the length of the bolt. The tensioning adjustment mechanism 4 is shown in fig. 5 and 6, and comprises a tensioning adjustment rod fixing frame 5 fixed on the cleaning chamber frame 1, and tensioning wheel connecting plates 4-4 with two ends respectively supporting a floating tensioning wheel 4-5 and a fixed shaft tensioning wheel 4-5' hinged on the cleaning chamber frame 1. The floating tensioner 4-5 and the fixed shaft tensioner 4-5' are respectively arranged on the inner side and the outer side of the trapezoidal section transmission belt 6. A plurality of gear holes 5-2 communicated with the middle sliding groove are formed in the horizontal baffle plate 5-1 of the tensioning adjusting rod fixing frame 5. The tensioning wheel connecting plate 4-4 is fixedly connected with the lower end of the gear lever 4-3, the compression lever sleeve 4-1 which can axially and relatively stretch is sleeved at the upper end of the gear lever 4-3 through the diameter reduction section, and the spring 4-2 is arranged between the gear lever 4-3 and the compression lever sleeve 4-1. The outer diameter of the middle section of the compression rod sleeve 4-1 is smaller than the width of the middle chute, and two ends of the compression rod sleeve are respectively provided with a conical expanding section with the large diameter larger than the diameter of the gear hole 5-2, so that the conical expanding section at the lower end can be conveniently clamped into the selected gear hole 5-2 as required after the compression rod sleeve 4-1 is pressed down and shifted, and further the floating tensioning wheel 4-5 is shifted relative to the fixed shaft tensioning wheel 4-5', so that the tension of a transmission belt is changed. More specifically, pressing down the compression rod sleeve 4-1 compresses the compression spring, the compression rod sleeve 4-1 moves relative to the gear lever 4-3, and the tension of the belt by the tension pulley can be changed by changing the gear hole 5-2 of the tension adjusting rod fixing frame 5. When the radial acting force of the reducing wheel is increased, the distance is increased, so that the transmission diameter is reduced, and the rotating speed of the fan is increased; when the radial acting force is reduced, the distance is reduced under the action of the extension spring, so that the transmission diameter is increased, and the regulation and control of the rotating speed of the fan are realized.
The vibration starting mechanism of the vibrating screen 10 is quite common and is not described in detail, and its structure is shown in fig. 2 and 3, and includes a front grid screen 10-2, a rear grid screen 10-4, a rear grid screen 10-5, and a circular hole screen 10-3 at the lower part, which are sequentially installed at the upper part of the screen frame 10-1. The middle lower part and the rear lower part of the screen frame 10-1 are respectively provided with a grain collecting frame 10-6.
The rear grill screen 10-5 has a specific structure shown in fig. 7 and 8, and includes a frame mainly defined by an upwardly inclined front plate A1, side plates A4 and rear plate A6 on both sides, and screen pieces A5 arranged in the frame at intervals. The side plate A4 is provided with hinge holes A4.1 which are uniformly distributed in an upper row at intervals and yield holes A4.2 which are correspondingly distributed in a lower row at intervals; the upper end side and the lower end side of each sieve sheet A5 extend out of the hinge pin A5.1 respectively, so that the two sides of the upper end of each sieve sheet A5 are hinged with the corresponding hinge holes A4.1 respectively, and the two sides of the lower end of each sieve sheet A5 extend out of the corresponding abdicating holes A4.2 respectively and are hinged with the corresponding holes of the outer connecting rod A3 to form a multiple parallel four-connecting rod mechanism. The upper end of the first sieve sheet is fixedly connected with the upper end hole A2.1 of the rear adjusting handle A2, and the middle hole A2.2 of the rear adjusting handle A2 is movably connected with the lower end of the sieve P sheet.
The structure of the front grid screen 10-2 is similar to that of the grid screen 10-5, and the corresponding front adjusting handle and the lower pulling hole A2.3 of the rear adjusting handle A2 are connected in a linkage manner through a pulling wire 9, and the pulling wire 9 extends to the cab of the soybean combine through the pulling wire fixing frame 7. Thus, the pull wire 9 is pulled in the cab, and the screen sheet can synchronously rotate around the upper hinge point by adjusting the handle, so that the inclination angle of the screen sheet of the front and rear grid screens can be adjusted and controlled.
The tailing screen 10-4 of this embodiment is shown in fig. 9, and mainly comprises a plurality of parallel screen bars D2 and a screen bar mounting frame D1, wherein the screen bars D2 are uniformly mounted on the screen bar mounting frame D1 so as to be comb-shaped. The main function of the tailing screen 10-4 is to separate longer soybean straw and prevent the soybean straw from entering the grain collecting frame 10-6 along with soybean seeds.
According to the embodiment, after the soybean plants are threshed by the threshing cylinder above the cleaning system, soybean seeds, part of soybean straws, pods and the like fall on the screen surface of the vibrating screen. In general, soybean seeds, small straws and pods at the front end of the vibrating screen are distributed more, and large straws at the rear end of the vibrating screen are distributed more. During cleaning operation, the four-blade uniform flow fan rotates to generate a through-flow air direction to blow backwards, so that soybean straws and pods move towards the rear end of the cleaning system, and soybean seeds fall and are screened out through the front grid screen, the round hole screen and the front grain collecting frame respectively; under the vibration action of the cleaning wind power and the vibrating screen, the straw and the pod gradually move to the rear end of the cleaning system and are thrown out of the cleaning system, and soybean seeds mixed in the straw and the pod fall down from the rear grid screen and the rear grain collecting frame in the vibration process and are screened out. In the operation process of the soybean combine harvester adopting the embodiment, a driver can adjust the rotating speed of the fan and the inclination angles of the front grid screen and the rear grid screen according to the observed impurity-containing soybean in the grain tank and the loss condition of soybean seeds in the field. When the loss is excessive, the compression rod sleeve is pressed to adjust the tensioning adjusting mechanism to be positioned in the gear hole on the right side gradually, so that the tensioning force of the tensioning wheel on the belt is reduced, the radial force and the effective diameter of the belt on the reducing belt wheel are further reduced, and the rotating speed of the fan is reduced; when the impurity content is too high, the compression rod sleeve is pressed to adjust the tensioning adjusting mechanism to be positioned in a gear hole on the left side gradually, so that the tensioning force of the tensioning wheel on the belt is increased, the radial force and the effective diameter of the belt on the variable-diameter belt wheel are further increased, and the rotating speed of the fan is increased; on the other hand, the inclination angle of the grid sieve sheet can be reduced by pulling the stay wire adjusting handle as appropriate.
In a word, the embodiment aims at the soybean crop attribute, innovates a front grid screen type vibrating screen, a rear grid screen type vibrating screen and a simple and convenient fan rotating speed adjusting mechanism, so that the rotating speed of the fan, the inclination angle of the front grid screen and the inclination angle of the rear grid screen are all adjustable, and the soybean harvester is suitable for adjusting soybean harvesting and cleaning operation parameters under different working conditions, effectively solves the problems of large soybean cleaning loss and high impurity content, and can be practically applied to a combine harvester for field operation.
Example two
The basic structure of the adjustable cleaning system of the soybean harvester in this embodiment is the same as that of the first embodiment, except that as shown in fig. 10, hinge pins a5.1 extending from the upper and lower end sides of each screen sheet A5 of the rear grid screen are hinged with corresponding hinge pin holes of the upper link a3.1 and the lower link a3.2 respectively to form a rear screen assembly of a multiple parallel four-link mechanism, and the rear screen assembly is assembled into a frame surrounded by a front plate, side plates on both sides and a rear plate of the rear grid screen. The structure of the front grid screen can be analogized. Thus, the assembly is more convenient, and the inclination angle adjustment is more stable and reliable.
In addition to the embodiments described above, other embodiments of the invention are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention.
Claims (6)
1. An adjustable cleaning system of a soybean harvester comprises a cleaning chamber frame (1), a uniform flow fan (2) arranged below a feeding end of the cleaning chamber frame, and a vibrating screen (10) arranged at a middle layer of the cleaning chamber frame; the method is characterized in that:
the main shaft of the uniform flow fan (2) is provided with a reducing belt wheel (3) and is in transmission connection with a driving belt wheel (8) through a transmission belt with a tensioning and adjusting mechanism (4);
the vibrating screen (10) comprises a front grid screen (10-2), a tail screen (10-4) and a rear grid screen (10-5) which are sequentially arranged at the upper part of the screen frame (10-1);
the front grid screen (10-2) and the rear grid screen (10-5) respectively comprise a frame mainly surrounded by a front plate (A1), side plates (A4) and a rear plate (A6) at two sides, and screen sheets (A5) arranged in the frame at intervals;
the side plate of the rear grid screen is provided with hinge holes which are uniformly distributed in an upper row at intervals and abdication holes which are correspondingly distributed in a lower row at intervals; the upper end of each screen sheet (A5) of the rear grid screen is hinged with the corresponding hinging hole, and the lower end of each screen sheet extends out of the corresponding abdicating hole and is hinged with the corresponding hole of the outer connecting rod (A3) to form a parallel four-connecting rod mechanism; the upper end of one of the screen sheets of the rear grid screen is fixedly connected with the upper end of a rear adjusting handle (A2), and the middle part of the rear adjusting handle (A2) is movably connected with the lower end of one of the screen sheets of the rear grid screen;
the side plate of the front grid screen is provided with hinge holes which are uniformly distributed in an upper row at intervals and abdication holes which are correspondingly distributed in a lower row at intervals; the upper ends of the screen sheets of the front grid screen are respectively hinged with the corresponding hinging holes, and the lower ends of the screen sheets extend out of the corresponding abdicating holes respectively to be hinged with the outer connecting rods, so that a parallel four-connecting rod mechanism is formed; the upper end of one of the sieve plates of the front grid sieve is fixedly connected with the upper end of a front adjusting handle, and the middle part of the front adjusting handle is movably connected with the lower end of one of the sieve plates of the front grid sieve and is in linkage connection with the rear adjusting handle;
the front adjusting handle of the front grid screen is connected with the pull-down hole of the rear adjusting handle in a linkage way through a pull wire, and the pull wire extends to the cab through a pull wire fixing frame;
the reducing belt wheel (3) is composed of a pair of reducing wheels (3-1) which have axial approaching trend under the action of the elastic piece (3-2) and have opposite transmission conical surfaces; the tensioning adjustment mechanism (4) comprises a tensioning adjustment rod fixing frame (5) which is provided with a gear and is fixed on the cleaning chamber frame (1), and tensioning wheel connecting plates (4-4) with two ends respectively supporting a floating tensioning wheel (4-5) and a fixed shaft tensioning wheel; the floating tensioning wheel and the fixed shaft tensioning wheel are respectively positioned at the inner side and the outer side of the transmission belt; the tensioning wheel connecting plate (4-4) is fixedly connected with the lower end of the gear lever (4-3), and the upper end of the gear lever (4-3) is connected with the compression lever sleeve (4-1) which can axially and relatively stretch; the lower end of the compression rod sleeve (4-1) is provided with a structure clamped into the gear; when the gear of the compression rod sleeve (4-1) clamped on the tensioning adjustment rod fixing frame (5) is changed, the meshing radius of the variable-diameter belt wheel (3) and the variable-diameter belt wheel (3) is changed through the tension force of the floating tensioning wheel and the fixed shaft tensioning wheel variable-transmission belt.
2. The adjustable cleaning system of a soybean harvester of claim 1, wherein: a plurality of gear holes communicated with the middle sliding groove are formed in the horizontal baffle plate of the tensioning adjusting rod fixing frame; the tensioning wheel connecting plate is fixedly connected with the lower end of the gear lever; the upper end of the gear lever is sleeved with a compression lever sleeve which can axially and relatively stretch out and draw back through a diameter reducing section, and a spring is arranged between the gear lever and the compression lever sleeve.
3. The adjustable cleaning system of a soybean harvester of claim 2, wherein: the outer diameter of the middle section of the compression rod sleeve is smaller than the width of the middle sliding groove, and two ends of the compression rod sleeve are respectively provided with a conical expanding section with the large diameter larger than the diameter of the gear hole.
4. The adjustable cleaning system of a soybean harvester of claim 3, wherein: the front adjusting handle and the lower pulling hole of the rear adjusting handle are connected in a pulling linkage way, and the pulling wire extends to the cab.
5. The adjustable cleaning system of a soybean harvester of claim 4, wherein: the tail screen consists of a plurality of screen bars and screen bar mounting frames which are parallel to each other and is comb-shaped.
6. The adjustable cleaning system of a soybean harvester of any one of claims 1 to 5, wherein: hinge pins extending from the upper end side and the lower end side of each screen sheet of the front grid screen and the rear grid screen are hinged with corresponding hinge pin holes of the upper connecting rod and the lower connecting rod of the front grid screen and the rear grid screen respectively to form a front screen assembly and a rear screen assembly of a multiple parallel four-connecting rod mechanism, and then the front screen assembly and the rear screen assembly are respectively arranged in frames of the front grid screen and the rear grid screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210175825.1A CN114731851B (en) | 2022-02-25 | 2022-02-25 | Adjustable cleaning system of soybean harvester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210175825.1A CN114731851B (en) | 2022-02-25 | 2022-02-25 | Adjustable cleaning system of soybean harvester |
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| CN114731851A CN114731851A (en) | 2022-07-12 |
| CN114731851B true CN114731851B (en) | 2023-05-16 |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006094767A (en) * | 2004-09-29 | 2006-04-13 | Iseki & Co Ltd | Sorting device of threshing unit |
| CN203661659U (en) * | 2013-12-16 | 2014-06-25 | 江苏大学 | Device for adjusting sieve piece opening degree of cleaning sieve of combine harvester |
| CN103688684B (en) * | 2013-12-16 | 2017-01-11 | 江苏大学 | Adjusting device and adjusting method for grading sieve piece opening of combine harvester |
| CN204175899U (en) * | 2014-09-16 | 2015-02-25 | 谢瑞成 | A kind of reducing controlling mechanism of infinitely variable speed gearing |
| CN105474894A (en) * | 2016-01-20 | 2016-04-13 | 莱恩农业装备有限公司 | Adjustable grading sieve |
| CN206196354U (en) * | 2016-09-26 | 2017-05-31 | 江苏大学 | A kind of cleaning plant running parameter can Automatic adjusument combined harvester |
| CN106612996A (en) * | 2016-12-27 | 2017-05-10 | 江苏大学 | Combined harvester sorting sieve with sieve piece spacing and oblique angle adjustable |
| CN207653034U (en) * | 2017-12-29 | 2018-07-27 | 十堰市双兴净化器有限公司 | A kind of full-feeding combine harvester sheller unit |
| CN208490274U (en) * | 2018-07-10 | 2019-02-15 | 河北首丰农业机械科技有限公司 | A kind of shift drive mechanism of the impurity elimination blower for crop harvester |
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