Harvester threshing concave

Abstract

The utility model relates to a kind of harvesting machinery threshing concave plate, belong to harvester field. Including: quick-change concave plate, first general concave plate and second general concave plate, the quick-change concave plate includes concave frame, multiple threshing grating and multiple baffle, the threshing grating is detachably installed in one side of the concave frame, the baffle is detachably installed on the threshing grating, and it is set in the other side of the concave frame;The first general concave plate rotatably installed in one end of the concave frame, the second general concave plate with the other end of the concave frame is detachably connected. The utility model is favorable to increase concave angle, improve threshing capacity, reduce the dismounting difficulty of threshing grating on quick-change concave plate, increase the threshing duration, reduce seed grain entrainment loss.

Description

Technical Field

[0001] This utility model relates to the field of harvesters, and in particular to a threshing concave plate for harvesting machinery. Background Technology

[0002] In harvesting machinery, the combined action of the threshing concave plate and the threshing drum completes the threshing process. The concave plate and the drum rub and thresh the crop. The structure of the concave plate has a significant impact on the threshing effect; a suitable concave plate structure can improve threshing performance and grain separation efficiency. In existing technologies, to improve the threshing efficiency of harvesting machinery threshing devices when harvesting different crops, concave plates with different grid sizes are designed and replaced when harvesting the corresponding crop.

[0003] However, in existing technical solutions, on the one hand, the concave plate's wrap angle is fixed, thus limiting its threshing area and threshing capacity. On the other hand, even if the concave plate's wrap angle is increased, the volume of the concave plate will increase accordingly, making disassembly more difficult. This is because existing harvesting machinery uses an integral welded form for the concave plate. Since the concave plate is inside the harvesting machinery body, it is affected by the structure of the harvesting machinery's threshing drum, machine observation holes, cleaning devices, and transmission system, resulting in limited operating space. Disassembly is extremely inconvenient when replacing concave plates with different grid sizes. In addition, when encountering difficult-to-thresh crops, although the cooperation between the threshing drum and the threshing concave plate can remove some grains from the crops, the volume of the crops after removing some grains will also decrease, making them easier for the threshing drum to squeeze out from the grid of the concave plate, resulting in high grain entrainment losses. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a threshing concave plate for harvesting machinery to solve the above-mentioned problem.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A threshing concave plate for harvesting machinery includes: a quick-change concave plate, a first universal concave plate, and a second universal concave plate. The quick-change concave plate includes a concave plate frame, a plurality of threshing grids, and a plurality of blocking plates. The threshing grids are detachably installed on one side of the concave plate frame, and the blocking plates are detachably installed on the threshing grids and disposed on the other side of the concave plate frame. The first universal concave plate is rotatably installed at one end of the concave plate frame, and the second universal concave plate is detachably connected to the other end of the concave plate frame.

[0006] The beneficial effects of this utility model are as follows: First and second universal concave plates are respectively set at both ends of the quick-change concave plate, which helps to increase the wrap angle of the concave plate, thereby increasing the threshing area of ​​the concave plate on the crop and improving threshing capacity; the threshing grid is detachably installed on one side of the concave plate frame, which allows for the replacement of threshing grids with different grid sizes when threshing different crops, avoiding the need to disassemble the entire quick-change concave plate and reducing the difficulty of disassembly and assembly; when encountering difficult-to-thresh crops, the blocking plate helps to prevent the crop after some grains have been threshed from being squeezed out of the threshing grid by the threshing drum, increasing threshing time and reducing grain entrainment loss.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the concave plate frame includes: multiple support plates, a first connecting plate and a second connecting plate, wherein the support plates are arc-shaped plates, the multiple support plates are spaced apart and arranged side by side, and the two ends of the support plates are fixedly connected to the first connecting plate and the second connecting plate respectively.

[0009] The beneficial effects of adopting the above-mentioned further solution are that multiple support plates, the first connecting plate and the second connecting plate help to provide the necessary support frame for the installation of the threshing grid.

[0010] Furthermore, each of the two adjacent support plates is provided with a slide rail on the side closest to each other, and the threshing grid is slidably connected to the slide rail.

[0011] The beneficial effect of adopting the above-mentioned further solution is that the threshing grid is slidably connected to the slide rail, which is beneficial to provide guidance for the threshing grid during disassembly and assembly, and reduces the difficulty of disassembly and assembly.

[0012] Furthermore, a plurality of positioning pins are fixed on the side of the second connecting plate that is connected to the support plate, and the threshing grid is inserted into the positioning pins.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the insertion of the threshing grid and the positioning pin helps to initially limit the threshing grid in the space formed by the two adjacent support plates, thus ensuring the installation accuracy of the threshing grid.

[0014] Furthermore, the threshing grid includes: multiple mounting plates, a third connecting plate, a fourth connecting plate, and multiple quick-change concave threshing shafts. The mounting plates are arc-shaped plate structures, and the multiple mounting plates are spaced apart and arranged side by side. An area for installing the blocking plate is formed between two adjacent mounting plates. The two ends of the mounting plates are fixedly connected to the third connecting plate and the fourth connecting plate, respectively. The third connecting plate is detachably connected to the first connecting plate. The multiple quick-change concave threshing shafts are spaced apart and arranged side by side. The quick-change concave threshing shafts are vertically fixedly connected to the mounting plates. The length of the fourth connecting plate is adapted to the distance between two adjacent support plates. The end of the fourth connecting plate is slidably connected to the slide rail. The fourth connecting plate is provided with multiple positioning holes, and multiple positioning pins are inserted into the multiple positioning holes one by one.

[0015] The beneficial effects of adopting the above-mentioned further solution are as follows: the multiple quick-change concave plate threshing shafts are spaced apart and arranged side by side, which is conducive to forming grid holes for threshing crops on the frame structure formed by the mounting plate, the third connecting plate and the fourth connecting plate, thereby cooperating with the external threshing roller to achieve threshing of crops; the end of the fourth connecting plate is slidably adapted to the slide rail, which is conducive to providing guidance for the threshing grid through the slide rail when disassembling and assembling the threshing grid, reducing the difficulty of disassembly and assembly.

[0016] Furthermore, a locking pin is fixedly installed at one end of the mounting plate near the fourth connecting plate, and multiple limiting holes are provided on the third connecting plate. The blocking plate is adapted to and connected with the locking pin and the limiting holes.

[0017] The beneficial effects of adopting the above-mentioned further solution are: it facilitates the installation of the blocking plate on the threshing grid, thereby preventing the crop after a portion of the grain has been threshed from being squeezed out of the threshing grid by the threshing drum, increasing the threshing time, and reducing grain entrainment loss.

[0018] Furthermore, the blocking plate includes two clamping plates, an insert plate, and a blocking plate housing. The blocking plate housing is a housing structure with an opening on one side near the threshing grid. The insert plate and the clamping plate are respectively fixedly installed at both ends of the blocking plate housing. The insert plate is adapted to be inserted into the limiting hole and is detachably connected to the third connecting plate. The clamping plate is a plate-shaped structure with grooves on its side. The two clamping plates are adapted to be engaged with the locking pins on the two adjacent mounting plates.

[0019] The beneficial effects of adopting the above-mentioned further solution are: the cooperation between the insert plate and the limiting hole and the cooperation between the clamping plate and the clamping pin make it easier for the blocking plate to be detachably installed on the threshing grid, thereby facilitating the user to quickly install and remove the blocking plate according to different threshing crops.

[0020] Furthermore, a plurality of quick-change concave plate hinge bushings are provided on the side of the second connecting plate away from the support plate. The first universal concave plate includes a first universal concave plate frame. A plurality of universal concave plate hinge bushings are fixedly installed at intervals on the side of the first universal concave plate frame. The quick-change concave plate hinge bushings and the universal concave plate hinge bushings are rotatably connected by hinge shafts.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the first general concave plate and the quick-change concave plate are hinged, which is conducive to cooperating with the concave plate adjustment mechanism of the harvesting machinery to realize the adjustment of the distance between the threshing concave plate and the threshing drum.

[0022] Furthermore, the first universal concave plate also includes a plurality of first universal concave plate threshing shafts for forming threshing grid holes on the first universal concave plate frame. The plurality of first universal concave plate threshing shafts are spaced apart and arranged side by side, and the first universal concave plate threshing shafts are fixedly installed on the first universal concave plate frame.

[0023] The beneficial effect of adopting the above-mentioned further scheme is that multiple first universal concave plate threshing shafts facilitate the formation of threshing grid holes on the first universal concave plate frame, thereby enabling the first universal concave plate to cooperate with the threshing drum to thresh the crop.

[0024] Furthermore, the second universal concave plate includes: a second universal concave plate frame, a baffle, and a plurality of second universal concave plate threshing shafts for forming threshing grid holes on the second universal concave plate frame. The first connecting plate is detachably connected to the second universal concave plate frame. The plurality of second universal concave plate threshing shafts are spaced apart and arranged side by side. The second universal concave plate threshing shafts are fixedly installed on the second universal concave plate frame. The baffle is fixedly installed on one end of the second universal concave plate frame away from the first connecting plate.

[0025] The beneficial effects of adopting the above-mentioned further scheme are: multiple second universal concave plate threshing shafts are conducive to forming threshing grid holes on the second universal concave plate frame, thereby enabling the second universal concave plate to cooperate with the threshing drum to thresh the crop; the baffle is conducive to preventing the crop from leaking out when the concave plate adjustment mechanism of the harvesting machinery adjusts the distance between the threshing concave plate and the threshing drum. Attached Figure Description

[0026] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the quick-change concave plate provided in an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of the concave plate frame provided in an embodiment of the present utility model;

[0029] Figure 4This is a schematic diagram of the structure of the threshing grid provided in an embodiment of the present utility model;

[0030] Figure 5 A schematic diagram of the blockage plate provided in an embodiment of this utility model from one perspective;

[0031] Figure 6 A structural schematic diagram of the blocking plate provided in another embodiment of this utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the second universal concave plate provided in an embodiment of the present utility model;

[0033] Figure 8 A schematic diagram of the structure of the first general concave plate provided in the embodiment of this utility model.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1. Quick-change concave plate; 2. First universal concave plate; 3. Second universal concave plate; 11. Concave plate frame; 12. Threshing grid; 13. Blocking plate; 21. First universal concave plate frame; 22. First universal concave plate threshing shaft; 23. Universal concave plate hinge bushing; 31. Second universal concave plate frame; 32. Second universal concave plate threshing shaft; 33. Baffle; 111. Support plate; 112. First connecting plate; 113. Second connecting plate; 114. Slide rail; 115. Positioning pin; 116. Quick-change concave plate hinge bushing; 121. Mounting plate; 122. Third connecting plate; 123. Fourth connecting plate; 124. Quick-change concave plate threshing shaft; 125. Locking pin; 126. Limiting hole; 127. Positioning hole; 131. Locking plate; 132. Inserting plate; 133. Blocking plate housing. Detailed Implementation

[0036] The principles and features of this utility model are described below. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0037] like Figures 1 to 8 As shown, this embodiment provides a threshing concave plate for harvesting machinery, including: a quick-change concave plate 1, a first universal concave plate 2, and a second universal concave plate 3. The quick-change concave plate 1 includes a concave plate frame 11, a plurality of threshing grids 12, and a plurality of blocking plates 13. The threshing grids 12 are detachably installed on one side of the concave plate frame 11, and the blocking plates 13 are detachably installed on the threshing grids 12 and disposed on the other side of the concave plate frame 11. The first universal concave plate 2 is rotatably installed on one end of the concave plate frame 11, and the second universal concave plate 3 is detachably connected to the other end of the concave plate frame 11.

[0038] It should be noted that in the technical solution of this utility model, the quick-change concave plate 1, the first universal concave plate 2 and the second universal concave plate 3 are generally arc-shaped, and the curvature of the first universal concave plate 2 and the second universal concave plate 3 is the same as that of the quick-change concave plate 1.

[0039] When the first universal concave plate 2 is rotatably connected to one end of the quick-change concave plate 1, the maximum angle that the first universal concave plate 2 can rotate to on the quick-change concave plate 1 is as follows: Figure 1 As shown, after the first universal concave plate 2 rotates to be on the same arc as the quick-change concave plate 1, the first universal concave plate 2 can no longer rotate.

[0040] The beneficial effects of this utility model are as follows: First and second universal concave plates are respectively set at both ends of the quick-change concave plate, which helps to increase the wrap angle of the concave plate, thereby increasing the threshing area of ​​the concave plate on the crop and improving threshing capacity; the threshing grid is detachably installed on one side of the concave plate frame, which allows for the replacement of threshing grids with different grid sizes when threshing different crops, avoiding the need to disassemble the entire quick-change concave plate and reducing the difficulty of disassembly and assembly; when encountering difficult-to-thresh crops, the blocking plate helps to prevent the crop after some grains have been threshed from being squeezed out of the threshing grid by the threshing drum, increasing threshing time and reducing grain entrainment loss.

[0041] Preferred, such as Figure 3 As shown, the concave plate frame 11 includes: multiple support plates 111, a first connecting plate 112 and a second connecting plate 113. The support plates 111 are arc-shaped plates. The multiple support plates 111 are spaced apart and arranged side by side. The two ends of the support plates 111 are fixedly connected to the first connecting plate 112 and the second connecting plate 113, respectively.

[0042] The advantages of adopting the above preferred scheme are that multiple support plates, the first connecting plate and the second connecting plate help to provide the necessary support frame for the installation of the threshing grid.

[0043] Preferred, such as Figures 2 to 4 As shown, each of the two adjacent support plates 111 is provided with a slide rail 114 on the side closest to each other, and the threshing grid 12 is slidably connected to the slide rail 114.

[0044] The advantages of adopting the above-mentioned preferred solution are: the threshing grid is slidably connected to the slide rail, which is beneficial to provide guidance for the threshing grid during disassembly and assembly, and reduces the difficulty of disassembly and assembly.

[0045] Preferred, such as Figures 2 to 4 As shown, a plurality of positioning pins 115 are fixed on the side of the second connecting plate 113 that is connected to the support plate 111, and the threshing grid 12 is inserted into the positioning pins 115.

[0046] The advantages of adopting the above-mentioned preferred solution are: the insertion of the threshing grid and the positioning pin facilitates the initial positioning of the threshing grid in the space formed by the two adjacent support plates, thus ensuring the installation accuracy of the threshing grid.

[0047] Preferred, such as Figures 2 to 4 As shown, the threshing grid 12 includes: multiple mounting plates 121, a third connecting plate 122, a fourth connecting plate 123, and multiple quick-change concave threshing shafts 124. The mounting plates 121 are arc-shaped plate structures. The multiple mounting plates 121 are spaced apart and arranged side by side. An area for installing the blocking plate 13 is formed between two adjacent mounting plates 121. The two ends of the mounting plate 121 are fixedly connected to the third connecting plate 122 and the fourth connecting plate 123, respectively. The third connecting plate 122 is connected to the first connecting plate 123. The connecting plate 112 is detachably connected. Multiple quick-change concave plate threshing shafts 124 are spaced apart and arranged side by side. The quick-change concave plate threshing shafts 124 are vertically fixedly connected to the mounting plate 121. The length of the fourth connecting plate 123 is adapted to the distance between two adjacent support plates 111. The end of the fourth connecting plate 123 is slidably connected to the slide rail 114. Multiple positioning holes 127 are provided on the fourth connecting plate 123. Multiple positioning pins 115 are inserted into the multiple positioning holes 127 one by one.

[0048] It should be noted that in a preferred embodiment of this utility model, the third connecting plate 122 and the first connecting plate 112 are detachably connected by bolts.

[0049] The installation positions of the positioning pin 115 and the positioning hole 127 need to meet the requirement that when the fourth connecting plate 123 slides along the slide rail 114, the positioning pin 115 can be inserted into the positioning hole 127.

[0050] The advantages of adopting the above-mentioned preferred solution are: the multiple quick-change concave plate threshing shafts are spaced apart and arranged side by side, which is conducive to forming grid holes for threshing crops on the frame structure formed by the mounting plate, the third connecting plate and the fourth connecting plate, thereby cooperating with the external threshing roller to achieve threshing of crops; the end of the fourth connecting plate is slidably adapted to the slide rail, which is conducive to providing guidance for the threshing grid through the slide rail when disassembling and assembling the threshing grid, reducing the difficulty of disassembly and assembly.

[0051] Preferred, such as Figures 4 to 6 As shown, a locking pin 125 is fixedly installed on one end of the mounting plate 121 near the fourth connecting plate 123. A plurality of limiting holes 126 are provided on the third connecting plate 122. The blocking plate 13 is adapted to be connected to the locking pin 125 and the limiting holes 126.

[0052] The advantages of adopting the above preferred solution are: it facilitates the installation of the blocking plate on the threshing grid, thereby preventing the crop after a portion of the grain has been threshed from being squeezed out of the threshing grid by the threshing drum, increasing the threshing time and reducing grain entrainment loss.

[0053] Preferred, such as Figures 4 to 6 As shown, the blocking plate 13 includes two clamping plates 131, an insert plate 132, and a blocking plate housing 133. The blocking plate housing 133 is a housing structure with an opening on one side near the threshing grid 12. The insert plate 132 and the clamping plate 131 are respectively fixedly installed at both ends of the blocking plate housing 133. The insert plate 132 is adapted to be inserted into the limiting hole 126 and is detachably connected to the third connecting plate 122. The clamping plate 131 is a plate-shaped structure with a groove on the side. The two clamping plates 131 are adapted to be engaged with the locking pins 125 on the two adjacent mounting plates 121.

[0054] It should be noted that in the technical solution of this utility model, the insert plate 132 is adapted to be inserted into the limiting hole 126, and the two clamping plates 131 are adapted to be clamped by the clamping pins 125 on the two adjacent mounting plates 121. In fact, the blocking plate 13 cannot be well fixed on the threshing grid 12. Therefore, after the insert plate 132 is adapted to be inserted into the limiting hole 126, the insert plate 132 and the third connecting plate 122 are connected by bolts to realize the detachable connection between the blocking plate 13 and the threshing grid 12.

[0055] Figure 5 and Figure 6 The structure of the insert plate 132 described herein is similar but not exactly the same, because the insert plate 132 has been adaptively adjusted according to the position of the limiting hole 126, but this does not affect the actual use and function.

[0056] In the technical solution of this utility model, the blocking plate 13 is only installed on the concave frame 11 when it is necessary to thresh difficult-to-thresh crops. After most or all of the grains on the difficult-to-thresh crops have been removed, the blocking plate 13 can be removed to take out the grains. Alternatively, the blocking plate 13 can be partially installed on the concave frame 11, that is, the blocking plate 13 does not completely block the grid holes on the threshing grid 12, so that the threshed grains can fall out of the grid holes during threshing. As for the crops after the grains have been removed, they are removed through the separating concave plate. The separating concave plate is another component of the harvester and is not within the scope of the technical solution of this utility model. Therefore, its specific structure is not described. That is, the removal of the crops after the grains have been removed by the separating concave plate is existing technology.

[0057] The advantages of adopting the above preferred solution are: the cooperation between the insert plate and the limiting hole and the cooperation between the clamping plate and the clamping pin make it easier for the blocking plate to be detachably installed on the threshing grid, thereby facilitating the user to quickly install and remove the blocking plate according to different threshing crops.

[0058] Preferred, such as Figure 2 , Figure 3 and Figure 8 As shown, the second connecting plate 113 is provided with a plurality of quick-change concave plate hinge bushings 116 on the side away from the support plate 111. The first universal concave plate 2 includes a first universal concave plate frame 21. A plurality of universal concave plate hinge bushings 23 are fixedly installed at intervals on the side of the first universal concave plate frame 21. The quick-change concave plate hinge bushings 116 and the universal concave plate hinge bushings 23 are rotatably connected by hinge shafts.

[0059] It should be noted that in the technical solution of this utility model, the multiple quick-change concave plate hinge bushings 116 are respectively arranged close to the multiple universal concave plate hinge bushings 23, and the hinge shaft passes through the quick-change concave plate hinge bushings 116 and the universal concave plate hinge bushings 23. When the first universal concave plate frame 21 rotates to abut against the second connecting plate 113, the first universal concave plate 2 can no longer rotate, that is, it reaches the maximum angle that the first universal concave plate 2 can rotate to on the quick-change concave plate 1.

[0060] The advantages of adopting the above preferred solution are: the first general concave plate and the quick-change concave plate are hinged, which is conducive to cooperating with the concave plate adjustment mechanism of the harvesting machinery to realize the adjustment of the distance between the threshing concave plate and the threshing drum.

[0061] It should be noted that in the technical solution of this utility model, the distance between the threshing concave plate and the threshing drum is adjusted by the concave plate adjustment mechanism of the harvesting machinery, which is the prior art in this field.

[0062] Preferred, such as Figure 8 As shown, the first universal concave plate 2 also includes a plurality of first universal concave plate threshing shafts 22 for forming threshing grid holes on the first universal concave plate frame 21. The plurality of first universal concave plate threshing shafts 22 are spaced apart and arranged side by side, and the first universal concave plate threshing shafts 22 are fixedly installed on the first universal concave plate frame 21.

[0063] The beneficial effects of adopting the above preferred scheme are: multiple first universal concave plate threshing shafts facilitate the formation of threshing grid holes on the first universal concave plate frame, thereby enabling the first universal concave plate to cooperate with the threshing drum to thresh the crop.

[0064] Preferred, such as Figure 1 and Figure 7As shown, the second universal concave plate 3 includes: a second universal concave plate frame 31, a baffle 33, and a plurality of second universal concave plate threshing shafts 32 for forming threshing grid holes on the second universal concave plate frame 31. The first connecting plate 112 is detachably connected to the second universal concave plate frame 31. The plurality of second universal concave plate threshing shafts 32 are spaced apart and arranged side by side. The second universal concave plate threshing shafts 32 are fixedly installed on the second universal concave plate frame 31. The baffle 33 is fixedly installed on one end of the second universal concave plate frame 31 away from the first connecting plate 112.

[0065] The advantages of adopting the above preferred solution are: multiple second universal concave plate threshing shafts facilitate the formation of threshing grid holes on the second universal concave plate frame, thereby enabling the second universal concave plate to cooperate with the threshing drum to thresh the crop; the baffle helps to prevent the crop from leaking out when the concave plate adjustment mechanism of the harvesting machinery adjusts the distance between the threshing concave plate and the threshing drum.

[0066] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0068] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0069] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0071] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A threshing concave plate for harvesting machinery, characterized in that, include: Quick-change concave plate (1), first universal concave plate (2), and second universal concave plate (3); The quick-change concave plate (1) includes a concave plate frame (11), a plurality of threshing grids (12) and a plurality of blocking plates (13). The threshing grids (12) are detachably installed on one side of the concave plate frame (11), and the blocking plates (13) are detachably installed on the threshing grids (12) and disposed on the other side of the concave plate frame (11). The first universal concave plate (2) is rotatably installed on one end of the concave plate frame (11), and the second universal concave plate (3) is detachably connected to the other end of the concave plate frame (11).

2. The threshing concave plate for harvesting machinery according to claim 1, characterized in that, The concave frame (11) includes: multiple support plates (111), a first connecting plate (112) and a second connecting plate (113). The support plates (111) are arc-shaped plates. The multiple support plates (111) are spaced apart and arranged side by side. The two ends of the support plates (111) are fixedly connected to the first connecting plate (112) and the second connecting plate (113) respectively.

3. The threshing concave plate for harvesting machinery according to claim 2, characterized in that, Each of the two adjacent support plates (111) is provided with a slide rail (114) on the side closest to each other, and the threshing grid (12) is slidably connected to the slide rail (114).

4. The threshing concave plate for harvesting machinery according to claim 3, characterized in that, The second connecting plate (113) is fixed with a plurality of positioning pins (115) on the side connected to the support plate (111), and the threshing grid (12) is inserted into the positioning pins (115).

5. The threshing concave plate for harvesting machinery according to claim 4, characterized in that, The threshing grid (12) includes: multiple mounting plates (121), a third connecting plate (122), a fourth connecting plate (123), and multiple quick-change concave threshing shafts (124). The mounting plates (121) are arc-shaped plate structures. The multiple mounting plates (121) are spaced apart and arranged side by side. An area for the installation of the blocking plate (13) is formed between two adjacent mounting plates (121). The two ends of the mounting plates (121) are fixedly connected to the third connecting plate (122) and the fourth connecting plate (123) respectively. The third connecting plate (122) is connected to the first connecting plate (123). The connecting plate (112) is detachably connected. Multiple quick-change concave plate threshing shafts (124) are spaced apart and arranged side by side. The quick-change concave plate threshing shafts (124) are vertically fixedly connected to the mounting plate (121). The length of the fourth connecting plate (123) is adapted to the distance between two adjacent support plates (111). The end of the fourth connecting plate (123) is slidably connected to the slide rail (114). Multiple positioning holes (127) are provided on the fourth connecting plate (123). Multiple positioning pins (115) are inserted into the multiple positioning holes (127) one by one.

6. The threshing concave plate for harvesting machinery according to claim 5, characterized in that, The mounting plate (121) is fixedly mounted with a locking pin (125) at one end near the fourth connecting plate (123). The third connecting plate (122) is provided with a plurality of limiting holes (126). The blocking plate (13) is adapted to and connected with the locking pin (125) and the limiting holes (126).

7. The threshing concave plate for harvesting machinery according to claim 6, characterized in that, The blocking plate (13) includes two clamping plates (131), an insert plate (132), and a blocking plate housing (133). The blocking plate housing (133) is a housing structure with an opening on one side near the threshing grid (12). The insert plate (132) and the clamping plate (131) are respectively fixedly installed at both ends of the blocking plate housing (133). The insert plate (132) is adapted to be inserted into the limiting hole (126) and is detachably connected to the third connecting plate (122). The clamping plate (131) is a plate-shaped structure with a groove on the side. The two clamping plates (131) are adapted to be engaged with the locking pins (125) on the two adjacent mounting plates (121).

8. The threshing concave plate for harvesting machinery according to claim 2, characterized in that, The second connecting plate (113) is provided with a plurality of quick-change concave plate hinge bushings (116) on the side away from the support plate (111). The first universal concave plate (2) includes a first universal concave plate frame (21). A plurality of universal concave plate hinge bushings (23) are fixedly installed at intervals on the side of the first universal concave plate frame (21). The quick-change concave plate hinge bushings (116) and the universal concave plate hinge bushings (23) are rotatably connected by hinge shafts.

9. The threshing concave plate for harvesting machinery according to claim 8, characterized in that, The first universal concave plate (2) further includes a plurality of first universal concave plate threshing shafts (22) for forming threshing grid holes on the first universal concave plate frame (21). The plurality of first universal concave plate threshing shafts (22) are spaced apart and arranged side by side, and the first universal concave plate threshing shafts (22) are fixedly installed on the first universal concave plate frame (21).

10. A threshing concave plate for harvesting machinery according to claim 2, characterized in that, The second universal concave plate (3) includes: a second universal concave plate frame (31), a baffle (33), and a plurality of second universal concave plate threshing shafts (32) for forming threshing grid holes on the second universal concave plate frame (31). The first connecting plate (112) is detachably connected to the second universal concave plate frame (31). The plurality of second universal concave plate threshing shafts (32) are spaced apart and arranged side by side. The second universal concave plate threshing shafts (32) are fixedly installed on the second universal concave plate frame (31). The baffle (33) is fixedly installed at one end of the second universal concave plate frame (31) away from the first connecting plate (112).

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