A cylinder for threshing a combine harvester

Abstract

The utility model discloses a threshing cylinder of combine harvester relates to threshing technical field. The threshing cylinder of combine harvester, through the continuous scraping effect of scraping plate to concave sieve plate surface material, make material even distribution, and the threshing tooth can more fully contact with material, greatly improved the efficiency and thoroughness of threshing, and scraping plate is in the threshing process and continuously cleans concave sieve plate, effectively prevent material from piling up residual on the surface of concave sieve plate, reduced the frequent shutdown times caused by cleaning concave sieve plate, the adjusting system of electric telescopic link, connecting cylinder, adjusting lever etc. component constitutes, can according to the characteristics of different kinds, different maturity crops, the position and angle of scraping plate are flexibly adjusted, the adaptability and versatility of combined harvester under different operation scene are enhanced significantly.

Description

Technical Field

[0001] This utility model relates to the field of threshing technology, specifically a threshing drum for a combine harvester. Background Technology

[0002] In modern agricultural production, combine harvesters, as core equipment for achieving automated and efficient crop harvesting, directly impact the efficiency and quality of agricultural production. The threshing drum, a key component of the combine harvester, bears the crucial task of separating crop grains from the stalks. Traditional combine harvester threshing drums present numerous problems in actual operation. In existing combine harvester threshing drums, the material distribution on the concave screen plate is uneven during threshing, resulting in insufficient and uniform threshing by the threshing teeth. This not only reduces threshing efficiency but also causes grain loss, affecting crop yield. Furthermore, after prolonged operation, material residue easily accumulates on the concave screen plate surface, obstructing the normal threshing process and requiring frequent shutdowns for cleaning, severely impacting operational continuity and overall efficiency. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a threshing drum for a combine harvester to solve the problems mentioned in the background section. In existing combine harvesters, the material is unevenly distributed on the concave screen plate during the threshing process, which prevents the threshing teeth from fully and evenly threshing the material. This not only reduces threshing efficiency but also causes grain loss, affecting crop yield. Furthermore, after long-term operation, residual material tends to accumulate on the surface of the concave screen plate, hindering the normal threshing process and requiring frequent shutdowns for cleaning, which seriously affects the continuity of operation and overall efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A threshing drum for a combine harvester includes a support plate and a concave screen plate. The concave screen plate is fixedly connected between the support plates. A threshing drum body is rotatably connected between the support plates. Multiple sets of threshing teeth are fixedly connected to the outer side of the threshing drum body. A scraper plate is rotatably connected to the outer side of the threshing drum body and located between the threshing teeth. A second connecting rod is symmetrically rotatably connected to one side of the threshing drum body. One end of the second connecting rod is rotatably connected to a first connecting rod. One end of the first connecting rod is slidably connected to the scraper plate.

[0005] Preferably, a slide rod is fixedly connected inside the threshing drum body, a fixing plate is fixedly connected inside the threshing drum body, a connecting cylinder is slidably connected inside the fixing plate, and the interior of the connecting cylinder is slidably connected to the slide rod.

[0006] Preferably, a first connecting plate is fixedly connected to the outer side of the slide rod, an electric telescopic rod is fixedly connected to one side of the first connecting plate, a second connecting plate is fixedly connected to the bottom of the connecting cylinder, and one end of the electric telescopic rod passes through one side of the first connecting plate and is fixedly connected to the second connecting plate.

[0007] Preferably, a groove penetrating the surface of the fixed plate is provided on one side. A movable block is slidably connected inside the groove, and a movable plate is fixedly connected to one side of the movable block.

[0008] Preferably, a fixed cylinder is fixedly connected inside the threshing drum body, and a connecting rod is slidably connected inside the fixed cylinder.

[0009] Preferably, one end of the connecting rod passes through one side of the threshing drum body and is slidably connected to the scraper plate.

[0010] Preferably, an adjusting rod is rotatably connected to the outer side of the connecting cylinder, and one end of the adjusting rod is rotatably connected to the moving plate.

[0011] This utility model provides a threshing drum for a combine harvester. Compared with the prior art, it has the following advantages: 1. The threshing drum of this combine harvester uses a scraper plate to continuously scrape the material on the surface of the concave screen plate, making the material evenly distributed and allowing the threshing teeth to make more full contact with the material, which greatly improves the efficiency and thoroughness of threshing. In addition, the scraper plate continuously cleans the concave screen plate during the threshing process, effectively preventing material from accumulating and remaining on the surface of the concave screen plate, and reducing the number of frequent shutdowns caused by cleaning the concave screen plate.

[0012] 2. The adjustment system of this combine harvester, consisting of the threshing drum, electric telescopic rod, connecting cylinder, and adjusting rod, can flexibly adjust the position and angle of the scraper plate according to the characteristics of different types and maturity levels of crops. Whether harvesting different grains such as wheat and rice, or dealing with situations where there are large differences in crop maturity, the threshing drum can achieve the best threshing effect through rapid adjustment, significantly enhancing the adaptability and versatility of the combine harvester in different operating scenarios. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the fixing plate and scraping plate structure of this utility model; Figure 4 This is a schematic diagram of the slide bar structure of this utility model; Figure 5 This is a schematic diagram showing the connection relationship between the slide bar and the fixing plate of this utility model; Figure 6 This utility model Figure 2 A magnified structural diagram of part A in the middle section.

[0014] In the diagram: 1. Support plate; 2. Concave screen plate; 3. Threshing drum body; 4. Threshing teeth; 5. Scraper plate; 6. Fixed cylinder; 7. Fixed plate; 8. Slide groove; 9. Connecting rod; 10. Slide rod; 11. Moving plate; 12. Connecting cylinder; 13. Adjusting rod; 14. Moving block; 15. First connecting plate; 16. Electric telescopic rod; 17. Second connecting plate; 18. First connecting rod; 19. Second connecting rod. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1 to 6 This utility model provides a technical solution: a threshing drum for a combine harvester, including a support plate 1 and a concave screen plate 2. The concave screen plate 2 is fixedly connected between the support plates 1, and a threshing drum body 3 is rotatably connected between the support plates 1. Multiple sets of threshing teeth 4 are fixedly connected to the outer side of the threshing drum body 3. The threshing drum body 3 rotates while the threshing teeth 4 rotate. A scraper plate 5 is rotatably connected to the outer side of the threshing drum body 3 and located between the threshing teeth 4. The rotation of the threshing drum body 3 causes the scraper plate 5 to rotate, scraping the material on the surface of the concave screen plate 2. The threshing drum body 3 and the threshing teeth 4 thresh the material. A second connecting rod 19 is symmetrically rotatably connected to one side of the threshing drum body 3. A first connecting rod 18 is rotatably connected to one end of the second connecting rod 19. One end of the first connecting rod 18 is slidably connected to the scraper plate 5. The rotation of one end of the scraper plate 5 causes the first connecting rod 18 to move. One end of the first connecting rod 18 slides and rotates within the scraper plate 5, causing the second connecting rod 19 connected to the other end to rotate and move.

[0017] Furthermore, a slide rod 10 is fixedly connected inside the threshing drum body 3, a fixed plate 7 is fixedly connected inside the threshing drum body 3, and a connecting cylinder 12 is slidably connected inside the fixed plate 7. The connecting cylinder 12 moves along the inside of the fixed plate 7, and the inside of the connecting cylinder 12 is slidably connected to the slide rod 10. While the connecting cylinder 12 moves, it also moves along the outside of the slide rod 10.

[0018] Furthermore, a first connecting plate 15 is fixedly connected to the outer side of the slide rod 10, an electric telescopic rod 16 is fixedly connected to one side of the first connecting plate 15, and a second connecting plate 17 is fixedly connected to the bottom of the connecting cylinder 12. The second connecting plate 17 moves, causing the connecting cylinder 12 to move. One end of the electric telescopic rod 16 passes through one side of the first connecting plate 15 and is fixedly connected to the second connecting plate 17. After the electric telescopic rod 16 is opened, it moves the second connecting plate 17.

[0019] Furthermore, a groove 8 penetrating its surface is provided on one side of the fixed plate 7. A movable block 14 is slidably connected inside the groove 8. The movable block 14 moves along the inside of the groove 8. A movable plate 11 is fixedly connected to one side of the movable block 14. The movable plate 11 moves the movable block 14 along with it.

[0020] Furthermore, a fixed cylinder 6 is fixedly connected inside the threshing drum body 3, and a connecting rod 9 is slidably connected inside the fixed cylinder 6. The connecting rod 9 moves along the inside of the fixed cylinder 6 to maintain the stability of the connecting rod 9 during movement.

[0021] Furthermore, one end of the connecting rod 9 passes through one side of the threshing drum body 3 and is slidably connected to the scraper plate 5. The movement of the connecting rod 9 causes one end of the scraper plate 5 to move, and the connecting rod 9 rotates while moving inside the scraper plate 5.

[0022] Furthermore, an adjusting rod 13 is rotatably connected to the outer side of the connecting cylinder 12. One end of the adjusting rod 13 is rotatably connected to the moving plate 11. The movement of the connecting cylinder 12 moves the adjusting rod 13, and the movement of the adjusting rod 13 moves the moving plate 11.

[0023] In operation, when the combine harvester begins work, the threshing drum body 3 starts to rotate under the drive of the power system. Multiple sets of threshing teeth 4, fixedly connected to its outer side, rotate synchronously, striking and kneading the crops entering the threshing area to achieve initial separation of grains from stems. Simultaneously, the rotation of the threshing drum body 3 drives the scraper plate 5, which is rotatably connected to its outer side and located between the threshing teeth 4, to rotate as well. During rotation, the scraper plate 5 can level the material on the surface of the concave screen plate 2, ensuring even distribution of the material on the concave screen plate 2 and providing better threshing strips for the threshing teeth 4. To ensure uniform and thorough threshing, a series of precise transmission and adjustment structures work together inside the threshing drum body 3. The fixed plate 7 and fixed cylinder 6 provide stable support and movement guidance for the internal components. When the position of the scraper plate 5 needs to be adjusted to adapt to different threshing requirements, the electric telescopic rod 16 plays a crucial role. After the electric telescopic rod 16 is opened, one end passes through the first connecting plate 15 and connects to the second connecting plate 17. Through its telescopic movement, it drives the second connecting plate 17 to move. Since the second connecting plate 17 is fixedly connected to the connecting cylinder 12, the connecting cylinder 12 will move along the... The fixed plate 7 moves inside, and the movement of the connecting cylinder 12 is transmitted through the adjusting rod 13, which is rotatably connected to its outer side. One end of the adjusting rod 13 is rotatably connected to the connecting cylinder 12, and the other end is rotatably connected to the moving plate 11. The movement of the connecting cylinder 12 drives the adjusting rod 13 to move, which in turn causes the moving plate 11 to slide in the slide groove 8. The moving plate 11, in turn, drives the connecting rod 9 to move inside the fixed cylinder 6 through the fixedly connected moving block 14. One end of the connecting rod 9 passes through the threshing drum body 3 and is slidably connected to the scraper plate 5. Therefore, the movement of the connecting rod 9 can accurately drive one end of the scraper plate 5 to move. The scraper plate 5 can be moved and rotated to achieve flexible adjustment of its position and angle. In addition, during the rotation of the scraper plate 5, the movement of one end of it is transmitted and converted through the first connecting rod 18 and the second connecting rod 19 connected to it. The rotation of the scraper plate 5 drives the first connecting rod 18 to move. One end of the first connecting rod 18 slides and rotates inside the scraper plate 5, while driving the second connecting rod 19 connected to the other end to rotate and move. This structural design further enhances the stability and reliability of the scraper plate 5's movement, ensuring that it can continuously and effectively scrape the material during the threshing process.

[0024] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A threshing drum for a combine harvester, comprising a support plate (1) and a concave screen plate (2), characterized in that: A concave screen plate (2) is fixedly connected between the support plates (1), and a threshing drum body (3) is rotatably connected between the support plates (1). Multiple sets of threshing teeth (4) are fixedly connected to the outside of the threshing drum body (3). A scraper plate (5) is rotatably connected to the outside of the threshing drum body (3) and between the threshing teeth (4). A second connecting rod (19) is symmetrically rotatably connected to one side of the threshing drum body (3). A first connecting rod (18) is rotatably connected to one end of the second connecting rod (19). One end of the first connecting rod (18) is slidably connected to the scraper plate (5).

2. The threshing drum of a combine harvester according to claim 1, characterized in that: The threshing drum body (3) is fixedly connected to a slide rod (10), and a fixing plate (7) is fixedly connected to the inside of the threshing drum body (3). A connecting cylinder (12) is slidably connected to the inside of the fixing plate (7), and the inside of the connecting cylinder (12) is slidably connected to the slide rod (10).

3. The threshing drum of a combine harvester according to claim 2, characterized in that: A first connecting plate (15) is fixedly connected to the outside of the slide rod (10), an electric telescopic rod (16) is fixedly connected to one side of the first connecting plate (15), a second connecting plate (17) is fixedly connected to the bottom of the connecting cylinder (12), and one end of the electric telescopic rod (16) passes through one side of the first connecting plate (15) and is fixedly connected to the second connecting plate (17).

4. The threshing drum of a combine harvester according to claim 3, characterized in that: A groove (8) penetrating its surface is provided on one side of the fixed plate (7). A movable block (14) is slidably connected inside the groove (8), and a movable plate (11) is fixedly connected to one side of the movable block (14).

5. The threshing drum of a combine harvester according to claim 1, characterized in that: The threshing drum body (3) is fixedly connected to a fixed cylinder (6), and the fixed cylinder (6) is slidably connected to a connecting rod (9).

6. The threshing drum of a combine harvester according to claim 5, characterized in that: One end of the connecting rod (9) passes through one side of the threshing drum body (3) and is slidably connected to the scraper plate (5).

7. The threshing drum of a combine harvester according to claim 3, characterized in that: An adjusting rod (13) is rotatably connected to the outside of the connecting cylinder (12), and one end of the adjusting rod (13) is rotatably connected to the moving plate (11).

Images