CN118077432A - Cleaning sieve of harvester and harvester - Google Patents

Abstract

The invention discloses a cleaning sieve of a harvester and the harvester. The first fish scales are screened on the screen frame; the woven screen is arranged on the screen frame and is positioned below the first fish scale screen; the first air guide channel is arranged at the front end of the screen frame and used for guiding air flow to the first fish scale screen; the second wind-guiding channel is arranged at the front end of the screen frame and below the first wind-guiding channel and used for guiding the air flow to the first fish scale screen, and the third wind-guiding channel is arranged below the woven screen and used for guiding the air flow to the woven screen. According to the invention, the first air guide channel and the second air guide channel are arranged at the front end of the screen frame, and the third air guide channel is arranged below the woven screen, so that cleaning air can be intensively blown to the first fish scale screen and the woven screen, the cleaning air at the positions of the first fish scale screen and the woven screen is ensured to be sufficient for cleaning straw and sundries, and the grain cleaning quality is improved.

Description

Cleaning sieve of harvester and harvester

Technical Field

The invention relates to the field of agricultural machinery, in particular to a cleaning sieve of a harvester and the harvester.

Background

The cleaning screen is one of the core components of the harvester, and in the cleaning screen structure adopted by most domestic harvester manufacturers, an air deflector structure is not arranged at the front end of the screen body structure, so that wind blown by a cleaning fan is easy to diverge, the wind force is easy to be insufficient at the screen body structure, straw and sundries are not cleaned cleanly, and the cleaning quality of seeds is influenced.

Disclosure of Invention

In order to improve cleaning quality and ensure that cleaning wind force meets cleaning requirements, the invention discloses a cleaning screen of a harvester and the harvester.

The invention is realized by the following technical scheme:

A cleaning screen for a harvester comprising:

A screen frame;

the first fish scale sieve is arranged on the sieve frame;

the woven screen is arranged on the screen frame and positioned below the first fish scale screen;

the first air guide channel is arranged at the front end of the screen frame and used for guiding air flow to the first fish scale screen;

the second air guide channel is arranged at the front end of the screen frame and positioned below the first air guide channel and used for guiding air flow to the first fish scale screen;

And the third air guide channel is arranged below the woven screen and is used for guiding the air flow to the woven screen.

Further, the first fish scale sieve comprises a first fixed connecting rod, a first movable connecting rod, a plurality of first sieve plates and a first adjusting plate, wherein the first sieve plates are distributed between the first fixed connecting rod and the first movable connecting rod at intervals, two ends of each first sieve plate are correspondingly hinged to the first fixed connecting rod and the first movable connecting rod, and the first adjusting plate is hinged to the sieve frame and connected with the first movable connecting rod.

Further, the woven screen comprises a connecting frame and a woven screen, the connecting frame is arranged on the screen frame, and the woven screen is detachably arranged on the connecting frame.

Further, the cleaning sieve of the harvester further comprises a second fish scale sieve, the second fish scale sieve is arranged at the rear end of the sieve frame and positioned behind the first fish scale sieve and the woven sieve, the second fish scale sieve comprises a second fixed connecting rod, a second movable connecting rod, a plurality of second sieve sheets and a second adjusting plate, the second sieve sheets are distributed between the second fixed connecting rod and the second movable connecting rod at intervals, two ends of the second sieve sheets are correspondingly hinged to the second fixed connecting rod and the second movable connecting rod, and the second adjusting plate is hinged to the sieve frame and connected with the second movable connecting rod.

Further, be equipped with a plurality of first regulation holes on the first regulating plate, a plurality of first regulation holes are along the circumference interval distribution of first regulating plate, and first regulation hole is used for with screen frame fixed connection.

Further, a plurality of second adjusting holes are formed in the second adjusting plate and are distributed at intervals along the circumferential direction of the second adjusting plate, and the second adjusting holes are fixedly connected with the screen frame.

Further, the cleaning sieve of the harvester further comprises a shaking plate, wherein the shaking plate is arranged at the front end of the sieve frame, is positioned in front of the first fish scale sieve, and is positioned above the first air guide channel and the first fish scale sieve.

Further, the cleaning sieve of the harvester further comprises a first air deflector, the first air deflector is fixedly arranged at the front end of the sieve frame and located below the shaking plate, a first air guide channel is formed between the first air deflector and the shaking plate, and a plurality of second shaking plates distributed along the front-back direction are arranged on the first air deflector.

Further, the cleaning sieve of the harvester further comprises a second air deflector, a third air deflector and an air guide sealing rubber, wherein the second air deflector is fixedly arranged at the front end of the sieve frame and positioned below the first air deflector and in front of the first fish scale sieve, the third air deflector is fixedly arranged at the front end of the sieve frame and positioned below the second air deflector and in front of the woven sieve, a second air guide channel is formed between the second air deflector and the third air deflector, the air guide sealing rubber is arranged on the sieve frame and positioned below the woven sieve, the air guide sealing rubber is downwards and forwards obliquely arranged, and a third air guide channel is formed at the front side of the air guide sealing rubber.

The harvester disclosed by the invention comprises the cleaning sieve of the harvester.

Compared with the prior art, the invention has the following advantages:

1. according to the invention, the first air guide channel and the second air guide channel are arranged at the front end of the screen frame, so that the cleaning air can be intensively blown to the first fish scale screen, the cleaning air force at the first fish scale screen is ensured to be sufficient for cleaning the clean straws and sundries, the cleaning quality of seeds is improved, and in addition, the third air guide channel is arranged on the screen frame, the cleaning air is intensively blown to the woven screen, the cleaning air force intensity at the woven screen can be ensured to meet the cleaning requirement, and the cleaning quality of the seeds is further improved.

2. According to the invention, the opening and closing degree of the sieve sheets of the first and second fish scales can be adjusted, so that a user can conveniently and intermittently combine different sieve sheets of the first and second fish scales through different opening and closing degrees of the sieve sheets, and the method is suitable for cleaning more varieties of grain crops.

3. According to the invention, through the detachable arrangement of the woven screen and the connecting frame, a user can conveniently change the woven screen with different mesh sizes, and the device is suitable for cleaning grain crops with different sizes.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of a cleaning screen of a harvester as disclosed in this embodiment.

Fig. 2 is a schematic view showing the internal structure of a cleaning screen of the harvester disclosed in this embodiment.

Fig. 3 is a top view of a cleaning screen of the harvester disclosed in this embodiment.

Fig. 4 is an enlarged schematic view of a portion a in fig. 2.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.

Examples: this embodiment discloses a harvester comprising a cleaning screen of the harvester as shown in fig. 1 to 4, comprising a screen frame 1, a first ichthyosis screen 2, a woven screen 3, a first air guiding channel 4, a second air guiding channel 5 and a third air guiding channel 12.

The front end of the screen frame 1 can be arranged in a chute of the harvester frame through a bearing, and the whole cleaning screen is driven to reciprocate through an eccentric mechanism of the harvester frame. In order to ensure the air tightness of the screen frame 1 and ensure the cleaning effect of the cleaning screen of the embodiment, the cleaning screen frame 1 of the embodiment can be in sealing contact with an auger mechanism of a harvester through a sealing rubber, and the side wall of the screen frame 1 can be in sealing contact with the side wall of a frame of the harvester through the sealing rubber. The first fish scale sieve 2 is arranged on the sieve frame 1; the woven screen 3 is arranged on the screen frame 1 and is positioned below the first fish scale screen 2; the first air guide channel 4 is arranged at the front end of the screen frame 1 and is used for guiding air flow to the first fish scale screen 2; the second air guide channel 5 is arranged at the front end of the screen frame 1 and below the first air guide channel 4 and is used for guiding air flow to the first fish scale screen 2, and the third air guide channel 12 is arranged below the woven screen 3 and is used for guiding air flow to the woven screen 3. In this embodiment, through set up first wind-guiding passageway 4 and second wind-guiding passageway 5 at screen frame 1 front end, can not diverge and concentrate the blowing to first fish scale sieve with the blowing of the blowing fan that the embodiment used of cleaning, ensure that the blowing of first fish scale sieve and woven screen department is enough to clean straw and debris, improve seed grain cleaning quality. In addition, the third air guide channel 12 is arranged on the screen frame 1 to intensively blow the cleaning air to the woven screen, so that the cleaning air strength at the woven screen can be ensured to meet the cleaning requirement, and the grain cleaning quality is further improved.

Further, the first ichthyosis screen 2 comprises a first fixed connecting rod 21, a first movable connecting rod 22, a plurality of first screen plates 23 and a first adjusting plate 24, wherein the plurality of first screen plates 23 are distributed between the first fixed connecting rod 21 and the first movable connecting rod 22 at intervals, and two ends of the first screen plates 23 are correspondingly hinged to the first fixed connecting rod 21 and the first movable connecting rod 22. In this embodiment, the gap between the openings and closings of the first sieve plates 2 is adjustable, and the user drives the first movable connecting rod 22 to approach or depart from the first fixed connecting rod 21 by rotating the first adjusting plate 24, at this time, the first sieve plates 23 move along with the first movable connecting rod 22, so that the gap between the first fixed connecting rod 21 and the first movable connecting rod 22 between two adjacent first sieve plates 23 can automatically change correspondingly, thereby realizing automatic adjustment of the gap between the openings and closings of the first sieve plates 23, effectively automatically adjusting the gaps between different sieve plates according to different crops and different working conditions, adapting to complex working conditions, facilitating the user to adjust the gap between the openings and closings in time, improving the user experience and reducing loss, and enhancing the comprehensive benefits of society and users.

Further, in order to facilitate the first adjusting plate 24 to be locked on the screen frame 1 at different rotation angles relative to the screen frame 1, a plurality of first adjusting holes 241 are provided on the first adjusting plate 24, the plurality of first adjusting holes 241 are distributed along the circumferential direction of the first adjusting plate 24 at intervals, the first adjusting holes 241 are fixedly connected with the screen frame 1, specifically, the first adjusting plate 24 can be locked on the screen frame 1 through bolts passing through the corresponding first adjusting holes 241, so that the first adjusting plate 24 can be locked on the screen frame 1 at different rotation angles relative to the screen frame 1, and the opening and closing degree gap of the first screen sheet 23 can be conveniently fixed and adjusted.

Further, the woven screen 3 includes a link frame 31 and a woven screen 32, the link frame 31 is provided on the screen frame 1, and the woven screen 32 is detachably provided on the link frame 31. In this embodiment, through the detachable setting of the woven screen 32 and the connecting frame 31, the user can conveniently clean the seed crops with different sizes by replacing the woven screen 32 with different mesh sizes.

Further, the cleaning sieve of the harvester further comprises a second fish scale sieve 6, the second fish scale sieve 6 is arranged at the rear end of the sieve frame 1 and positioned behind the first fish scale sieve 2 and the woven sieve 3 and below the first fish scale sieve 2, the second fish scale sieve 6 comprises a second fixed connecting rod 61, a second movable connecting rod 62, a plurality of second sieve sheets 63 and a second adjusting plate 64, the second sieve sheets 63 are distributed between the second fixed connecting rod 61 and the second movable connecting rod 62 at intervals, and two ends of the second sieve sheets 63 are correspondingly hinged to the second fixed connecting rod 61 and the second movable connecting rod 62. The second adjusting plate 64 is hinged to the screen frame 1 and is connected to the second movable link 62. In this embodiment, the opening and closing degree gap of the second screen 6 is adjustable, and the user drives the second movable connecting rod 62 to approach or depart from the second fixed connecting rod 61 by rotating the second adjusting plate 64, and at this time, the second screen 63 moves along with the second movable connecting rod 62, so that the opening and closing degree gap of two adjacent second screen 63 between the second fixed connecting rod 61 and the second movable connecting rod 62 can be automatically changed correspondingly, thereby realizing automatic adjustment of the opening and closing degree gap of the second screen 63. In this embodiment, the opening and closing degree of the sieve sheets of the first and second fish scale sieves 2 and 5 can be adjusted, so that the user can conveniently clean more kinds of grain crops through different gap combinations of the opening and closing degrees of the sieve sheets of the first and second fish scale sieves 2 and 6. Compared with the traditional tailing screen adopting an elastic toothed plate structure, the cleaning screen with the opening and closing degree of the screen sheet can not be adjusted, and the second fish scale screen 6 has the opening and closing degree gap adjusting function, so that the cleaning screen has better adaptability and further improves the cleaning degree.

Further, in order to facilitate the second adjusting plate 64 to be locked on the screen frame 1 at different rotation angles relative to the screen frame 1, a plurality of second adjusting holes 641 are provided on the second adjusting plate 64, the second adjusting holes 641 are distributed along the circumferential direction of the second adjusting plate 64 at intervals, the second adjusting holes 641 are fixedly connected with the screen frame 1, specifically, the second adjusting plate 64 can be locked on the screen frame 1 through bolts passing through the corresponding second adjusting holes 641, so that the second adjusting plate 64 can be locked on the screen frame 1 at different rotation angles relative to the screen frame 1, and the opening and closing degree gap of the second screen sheet 63 can be conveniently fixed and adjusted.

Further, the cleaning sieve of the harvester further comprises a shaking plate 7, wherein the shaking plate 7 is arranged at the front end of the sieve frame 1, is positioned in front of the first fish scale sieve 2, and is positioned above the first air guide channel 4 and the first fish scale sieve 2. The shaking plate 7 is used for throwing the grain falling to the front end of the cleaning sieve backwards to the first scale sieve 2 so as to carry out subsequent cleaning operation, in this embodiment, the front sorting plate 71 is installed at the rear part of the shaking plate 7, the front sorting plate 71 comprises a plurality of sorting strips 711 which are distributed at intervals, and the front sorting plate 71 can prevent the straw from falling into the sieve frame 1 from the gap between the shaking plate 7 and the first scale sieve 2, so that the harvested material can be ensured to fully carry out cleaning operation. The rear screening plate 11 is arranged at the rear of the first fish scale sieve 2, and the rear screening plate 11 can prevent straws from falling into the sieve frame 1 from the gap between the first fish scale sieve 2 and the second fish scale sieve 5, so that the harvested products can be fully cleaned.

Further, in order to make the cleaning wind energy blow to the first fish scale sieve 2 intensively, the cleaning sieve of the harvester further comprises a first air deflector 8, the first air deflector 8 is fixedly arranged at the front end of the sieve frame 1 and is positioned below the shaking plate 7, a first air guide channel 4 is formed between the first air deflector 8 and the shaking plate 7, and a plurality of second shaking plates 81 distributed along the front-back direction are arranged on the first air deflector 8. Simple structure, the wind-guiding is effectual, the fully satisfactory user demand. The cleaning sieve of the harvester further comprises a second air deflector 9 and a third air deflector 10, wherein the second air deflector 9 is fixedly arranged at the front end of the sieve frame 1 and positioned below the first air deflector 8 and in front of the first fish scale sieve 2, the third air deflector 10 is fixedly arranged at the front end of the sieve frame 1 and positioned below the second air deflector 9 and in front of the woven sieve 3, and a second air guide channel 5 is formed between the second air deflector 9 and the third air deflector 10. Simple structure, the wind-guiding is effectual, the fully satisfactory user demand.

Further, in order to make the cleaning wind energy blow to the woven screen 3 intensively, the cleaning screen of the harvester further comprises a wind guiding sealing rubber 13, the wind guiding sealing rubber 13 is also used for being in sealing contact with the auger mechanism of the harvester or the side wall of the frame of the harvester, the wind guiding sealing rubber 13 is arranged on the screen frame 1 and is positioned below the woven screen 3, the wind guiding sealing rubber 13 is arranged downwards and forwards in an inclined manner, and a third wind guiding channel 12 is formed at the front side of the wind guiding sealing rubber 13. Simple structure can effectively lead the air current to woven screen 3 departments, the user demand is fully satisfied.

It should be understood that the terms "first," "second," and the like are used herein to describe various information, but such information should not be limited to these terms, which are used merely to distinguish one type of information from another. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the invention. Furthermore, references to orientations or positional relationships of the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc. are based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present invention.

While the foregoing is directed to the preferred embodiments of the present invention, it should be noted that modifications and variations could be made by those skilled in the art without departing from the principles of the present invention, and such modifications and variations are to be regarded as being within the scope of the invention.

Claims (10)

1. The cleaning sieve of harvester, its characterized in that includes:

A screen frame (1);

The first fish scale sieve (2) is arranged on the sieve frame (1);

The woven screen (3) is arranged on the screen frame (1) and is positioned below the first fish scale screen (2);

the first air guide channel (4) is arranged at the front end of the screen frame (1) and is used for guiding air flow to the first fish scale screen (2);

The second air guide channel (5) is arranged at the front end of the screen frame (1) and is positioned below the first air guide channel (4) and used for guiding air flow to the first fish scale screen (2);

And a third air guide channel (12) arranged below the woven screen (3) and used for guiding air flow to the woven screen (3).

2. A cleaning sieve for a harvester according to claim 1, characterized in that the first fish scale sieve (2) comprises a first fixed connecting rod (21), a first movable connecting rod (22), a plurality of first sieve plates (23) and a first adjusting plate (24), wherein the first sieve plates (23) are distributed between the first fixed connecting rod (21) and the first movable connecting rod (22) at intervals, two ends of the first sieve plates (23) are correspondingly hinged on the first fixed connecting rod (21) and the first movable connecting rod (22), and the first adjusting plate (24) is hinged on the sieve frame (1) and connected with the first movable connecting rod (22).

3. A cleaning sieve for a harvester according to claim 1, characterized in that the woven sieve (3) comprises a connecting frame (31) and a woven screen (32), the connecting frame (31) being arranged on the sieve frame (1), the woven screen (32) being detachably arranged on the connecting frame (31).

4. A cleaning sieve for a harvester according to claim 3, further comprising a second fish scale sieve (6), wherein the second fish scale sieve (6) is arranged at the rear end of the sieve frame (1), is positioned behind the first fish scale sieve (2) and the woven sieve (3), and is positioned below the first fish scale sieve (2), the second fish scale sieve (6) comprises a second fixed connecting rod (61), a second movable connecting rod (62), a plurality of second sieve sheets (63) and a second regulating plate (64), the second sieve sheets (63) are distributed between the second fixed connecting rod (61) and the second movable connecting rod (62) at intervals, and two ends of the second sieve sheets (63) are correspondingly hinged on the second fixed connecting rod (61) and the second movable connecting rod (62), and the second regulating plate (64) is hinged on the sieve frame (1) and is connected with the second movable connecting rod (62).

5. A cleaning sieve of a harvester according to claim 2, characterized in that the first adjusting plate (24) is provided with a plurality of first adjusting holes (241), the plurality of first adjusting holes (241) being distributed at intervals along the circumference of the first adjusting plate (24), the first adjusting holes (241) being adapted for a fixed connection with the sieve frame (1).

6. A cleaning sieve for a harvester according to claim 4, characterized in that the second adjusting plate (64) is provided with a plurality of second adjusting holes (641), the second adjusting holes (641) being distributed at intervals along the circumference of the second adjusting plate (64), the second adjusting holes (641) being adapted for a fixed connection with the sieve frame (1).

7. A cleaning sieve for a harvester according to claim 1, characterized by further comprising a shaking plate (7), said shaking plate (7) being arranged at the front end of the sieve frame (1) in front of the first fish scale sieve (2) and above the first air guiding channel (4) and the first fish scale sieve (2).

8. The cleaning sieve of a harvester according to claim 7, further comprising a first air deflector (8), wherein the first air deflector (8) is fixedly arranged at the front end of the sieve frame (1) and is positioned below the shaking plate (7), the first air deflector (8) and the shaking plate (7) form the first air guide channel (4), and a plurality of second shaking plates (81) distributed along the front-back direction are arranged on the first air deflector (8).

9. The cleaning sieve of a harvester according to claim 1, further comprising a second air deflector (9), a third air deflector (10) and an air guiding sealing rubber (13), wherein the second air deflector (9) is fixedly arranged at the front end of the sieve frame (1) and positioned below the first air deflector (8) and in front of the first fish scale sieve (2), the third air deflector (10) is fixedly arranged at the front end of the sieve frame (1) and positioned below the second air deflector (9) and in front of the woven sieve (3), the second air deflector (5) is formed between the second air deflector (9) and the third air deflector (10), the air guiding sealing rubber (13) is arranged on the sieve frame (1) and positioned below the woven sieve (3), and the air guiding sealing rubber (13) is downwards and forwards obliquely arranged, and the front side of the air guiding sealing rubber (13) forms the third air guiding channel (12).

10. Harvester, characterized by comprising a cleaning screen of a harvester according to any one of claims 1-9.