Cleaning sieve of harvesting machine
By designing a screen angle adjustment mechanism, using an adjusting sleeve and threaded connection, the problem of inconvenient and unreliable adjustment of the cleaning screen opening is solved, achieving stability and reliability of the screen opening and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LOVOL HEAVY IND CO LTD
- Filing Date
- 2025-04-25
- Publication Date
- 2026-04-17
AI Technical Summary
In existing technologies, the adjustment of the opening of the cleaning sieve is inconvenient and unreliable, which affects the cleanliness of the grain and the loss of grains.
A harvesting machinery cleaning screen including screen plates, screen frame and screen plate angle adjustment mechanism was designed. The screen plates can be conveniently and reliably adjusted by adjusting sleeve and threaded connection. The stability of screen plate opening is ensured by the cooperation of support components, connecting components and transfer components.
It enables simple and convenient adjustment of the sieve opening, improves the reliability and stability of the adjustment, and reduces costs.
Smart Images
Figure CN224127859U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of harvester technology, and in particular to a harvester cleaning screen. Background Technology
[0002] Currently, the cleaning screen is an important component of the cleaning system in grain combine harvesters. Its function is to reciprocate on the screen box, using airflow from a cleaning fan to separate the grains from the threshed material, while expelling other impurities (such as short stalks and chaff) from the machine. During field harvesting, an inappropriate screen opening directly affects grain cleanliness and grain loss. Therefore, the market demands increasingly reliable and convenient screen opening adjustment; in other words, there is an urgent need to develop a cleaning screen that allows for convenient and reliable screen opening adjustment. Utility Model Content
[0003] The purpose of this application is to provide a cleaning screen for harvesting machinery, which to a certain extent solves the technical problem of the urgent need to develop a cleaning screen that can conveniently and reliably adjust the screen opening in the existing technology.
[0004] This application provides a harvesting machinery cleaning screen, including: a screen frame, screen plates, and a screen plate angle adjustment mechanism; wherein, the screen plates are rotatably disposed within the screen frame; the screen plate angle adjustment mechanism includes a support member, a connecting member, a transition member, a fixed base, an adjusting member, and an adjusting sleeve; the fixed base is fixed to the screen frame; the adjusting sleeve is rotatably mounted on the fixed base; a portion of the adjusting member is inserted into the adjusting sleeve and threadedly connected, and when the adjusting sleeve rotates, it can drive the adjusting member to move along a first preset direction;
[0005] The connecting member is connected to the adjusting member, and the connecting member has an avoidance notch; the transition member passes through the avoidance notch, and the transition member can rotate and move within the avoidance notch; the supporting member is fixed within the screen frame, the transition member is rotatably connected to the supporting member, and the screen plate is fixedly connected to the transition member.
[0006] In the above technical solution, the fixing seat is further provided with mounting through holes extending through its opposite sides along the first preset direction; the adjusting sleeve includes a sleeve portion and a limiting portion connected sequentially along the first preset direction, and the sleeve portion is inserted into the mounting through hole.
[0007] The limiting portion abuts against the end of the fixed seat near the connecting member; the end of the sleeve portion away from the connecting member extends to the outside of the fixed seat; the limiting portion forms a through hole, and a portion of the structure of the adjusting member extends through the through hole into the interior of the sleeve portion and is threadedly connected to the sleeve portion.
[0008] In any of the above technical solutions, the sieve angle adjustment mechanism further includes a fixing member and a pin. The fixing member is sleeved on the structure of the sleeve portion extending to the outside of the fixing seat, and the fixing member is connected to the sleeve portion through the pin. The sleeve portion extends to the side of the fixing member away from the fixing seat.
[0009] In any of the above technical solutions, the sieve angle adjustment mechanism further includes a washer, which is sleeved on the sleeve portion and pressed between the end of the fixed seat and the fixed member along the first preset direction.
[0010] In any of the above technical solutions, the screen angle adjustment mechanism further includes a spring, which is sleeved on the outside of the sleeve portion and located inside the mounting through hole; the inner wall of the mounting through hole is formed with a mounting groove, the spring is located inside the mounting groove, and along the first preset direction, one end of the spring abuts against the inner wall of one end of the mounting groove, the other end of the spring abuts against the fixing member, and the spring is in a compressed state.
[0011] In any of the above technical solutions, the fixing member is further defined as a nut, and the sleeve portion is threadedly connected to the nut.
[0012] In any of the above technical solutions, the end of the adjusting member near the connecting member is a U-shaped connector, the connecting member is formed with a connecting protrusion, and the connecting protrusion is inserted into the U-shaped connector and is detachably connected by a fastening member.
[0013] In any of the above technical solutions, the supporting member is further provided with an installation notch extending along a second preset direction, and the connecting member is rotatably inserted into the installation notch; the screen angle adjustment mechanism further includes a limiting member, the limiting member is connected to the screen frame, and along the second preset direction, the connecting member abuts against the limiting member to limit the limiting member, so that the connecting member and the supporting member rotate at a preset position.
[0014] In any of the above technical solutions, further, along the third preset direction, the limiting member is disposed on the side of the sieve plate and the supporting member, and is located between the sieve plate and the supporting member.
[0015] In any of the above technical solutions, further, along the third preset direction, a plurality of the screen plates are provided on both opposite sides of the connecting member, and the plurality of the screen plates on each side are arranged sequentially at intervals along the first preset direction to form a single-sided screen plate assembly, and each single-sided screen plate assembly is equipped with the supporting member and the connecting member.
[0016] In any of the above technical solutions, the connecting member further includes a straight rod portion and a U-shaped rod portion connected together; wherein, there are two straight rod portions, which are respectively disposed on the two outer sides of the opening of the U-shaped rod portion; the two screen plates on both sides of the connecting member are respectively connected to the two straight rod portions in a one-to-one correspondence.
[0017] In any of the above technical solutions, the sieve angle adjustment mechanism further includes an auxiliary action sleeve, which is fixedly sleeved on the end of the adjustment sleeve away from the connecting member, and the cross section of the auxiliary action sleeve along the length direction perpendicular to the auxiliary action sleeve is polygonal.
[0018] Compared with the prior art, the beneficial effects of this application are as follows:
[0019] The screen adjustment process of the harvesting machinery cleaning screen provided in this application is simple and convenient. Moreover, the adjustment structure using adjustment components and threaded connection of adjustment sleeves has higher reliability, resulting in high stability of screen opening. Furthermore, the above structure is simple and low in cost. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 A schematic diagram of the structure of the harvesting machinery cleaning screen provided in the embodiments of this application;
[0022] Figure 2 This is a schematic diagram of the structure of the sieve angle adjustment mechanism provided in the embodiments of this application;
[0023] Figure 3 This is another structural schematic diagram of the sieve angle adjustment mechanism provided in the embodiments of this application;
[0024] Figure 4 A cross-sectional view of a harvesting machinery cleaning sieve provided in an embodiment of this application;
[0025] Figure 5 for Figure 4 A magnified structural diagram at point A;
[0026] Figure 6 A cross-sectional view of a harvesting machinery cleaning sieve provided in an embodiment of this application;
[0027] Figure 7 for Figure 6 A magnified structural diagram at point B;
[0028] Figure 8 A cross-sectional view of a harvesting machinery cleaning sieve provided in an embodiment of this application;
[0029] Figure 9 for Figure 8 A magnified structural diagram at point C;
[0030] Figure 10 A cross-sectional view of a harvesting machinery cleaning sieve provided in an embodiment of this application;
[0031] Figure 11 for Figure 10 A magnified structural diagram at point D;
[0032] Figure 12 Another structural schematic diagram of the harvesting machinery cleaning screen provided in the embodiments of this application;
[0033] Figure 13 for Figure 12 A magnified structural diagram at point E;
[0034] Figure 14 This is a partial structural diagram of a harvesting machinery cleaning screen provided in an embodiment of this application.
[0035] Figure label:
[0036] 1-Screen frame, 2-Screen plate, 3-Screen plate angle adjustment mechanism, 31-Supporting component, 32-Connecting component, 321-Avoidance notch, 322-Connecting protrusion, 33-Transfer component, 331-Straight rod, 332-U-shaped rod, 34-Adjusting component, 341-U-shaped connector, 35-Adjusting sleeve, 351-Sleeve, 352-Limiting part, 36-Fixing component, 37-Pin, 38-Washer, 39-Spring, 310-Limiting component, 311-Auxiliary action sleeve, 312-Bolt, 313-Nut, 314-Fixing seat, 3141-Mounting groove, 4-Single-sided screen plate assembly. Detailed Implementation
[0037] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.
[0038] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.
[0039] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0040] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0042] The following reference Figures 1 to 14 The present application describes a harvesting machinery cleaning screen according to some embodiments.
[0043] See Figures 1 to 14As shown, an embodiment of this application provides a harvesting machinery cleaning screen, including: a screen frame 1, screen plates 2, and a screen plate angle adjustment mechanism 3; wherein, the screen plates 2 are rotatably disposed within the screen frame 1; the screen plate angle adjustment mechanism 3 includes a support member 31, a connecting member 32, a transition member 33, a fixed base 314, an adjusting member 34, and an adjusting sleeve 35; the fixed base 314 is fixed to the screen frame 1; the adjusting sleeve 35 is rotatably mounted on the fixed base 314; a portion of the structure of the adjusting member 34 is inserted into the adjusting sleeve 35 and threadedly connected, and when the adjusting sleeve 35 rotates, it can drive the adjusting member 34 to move along a first preset direction;
[0044] The connecting member 32 is connected to the adjusting member 34, and the connecting member 32 forms an avoidance notch 321; the transition member 33 passes through the avoidance notch 321, and the transition member 33 can rotate and move in the avoidance notch 321; the supporting member 31 is fixed in the screen frame 1, the transition member 33 is rotatably connected to the supporting member 31, and the screen plate 2 is fixedly connected to the transition member 33.
[0045] As can be seen from the structure described above, the process of adjusting the angle of the screen plate 2, i.e. the opening degree of the screen plate 2, of the harvesting machinery cleaning screen provided in this application is as follows: by rotating the adjusting sleeve 35 with a wrench, the adjusting connecting rod and the sleeve rotate relative to each other, and the adjusting connecting rod moves upward along the first preset direction, i.e., the axial direction, and finally the opening degree of the screen plate 2 is adjusted. Preferably, the adjusting sleeve 35 can be rotated counterclockwise to close the screen plate 2, and the adjusting sleeve 35 can be rotated clockwise to open the screen plate 2.
[0046] As can be seen, the above adjustment process is simple and convenient. Moreover, the adjustment structure using the adjusting component 34 and the adjusting sleeve 35 with threaded connection has higher reliability, resulting in high stability of the screen opening. Furthermore, the above structure is simple and has low cost.
[0047] Furthermore, preferably, the first preset direction is the X direction, but of course, it is not limited to this.
[0048] In this embodiment, preferably, as follows: Figures 1 to 3 As shown, the fixing base 314 has mounting through holes extending through its opposite sides along a first preset direction; the adjusting sleeve 35 includes a sleeve portion 351 and a limiting portion 352 connected sequentially along the first preset direction, and the sleeve portion 351 is inserted into the mounting through hole.
[0049] The limiting part 352 abuts against one end of the fixed base 314 near the connecting member 32; the end of the sleeve part 351 away from the connecting member 32 extends to the outside of the fixed base 314; the limiting part 352 has a through hole, and a part of the structure of the adjusting member 34 extends through the through hole into the inside of the sleeve part 351 and is threadedly connected to the sleeve part 351.
[0050] As can be seen from the structure described above, the sleeve part 351 cooperates with the fixed seat 314 and is assembled together. The limiting part 352 abuts against the end of the fixed seat 314 near the connecting member 32, which plays the role of limiting one end of the connecting sleeve along the first preset direction, preventing its axial movement, and improving the stability and reliability of the structure.
[0051] Furthermore, preferably, the sleeve portion 351 and the limiting portion 352 are an integral structure.
[0052] In this embodiment, preferably, as follows: Figure 2 , Figure 3 and Figure 7 As shown, the sieve angle adjustment mechanism 3 also includes a fixing member 36 and a pin 37. The fixing member 36 is sleeved on the structure of the sleeve portion 351 extending to the outside of the fixing seat 314, and the fixing member 36 and the sleeve portion 351 are connected by the pin 37. That is, the fixing member 36 and the sleeve portion 351 of the adjusting sleeve 35 are connected together by the pin 37. The sleeve portion 351 extends to the side of the fixing member 36 away from the fixing seat 314.
[0053] As can be seen from the structure described above, the right end is limited by the fixed component 36 along the first preset direction, which makes it difficult for the adjusting sleeve 35 to move upward along the first preset direction, i.e., the axial direction, making the overall structure more stable and making it easier to ensure the stability of the sieve opening.
[0054] Furthermore, preferably, the fixing member 36 can be a nut, and the sleeve portion 351 is threadedly connected to the fixing member 36, i.e., the nut. That is, the outer wall of the sleeve portion 351 that mates with the fixing member 36 is provided with external threads, and the fixing member 36, i.e., the nut, is provided with matching internal threads. Of course, it is not limited to this.
[0055] In this embodiment, preferably, as follows: Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown, the sieve angle adjustment mechanism 3 also includes a washer 38, which is sleeved on the sleeve portion 351 and pressed between the end of the fixed seat 314 and the fixed member 36 along the first preset direction. Its surface is flat, which facilitates abutment and cooperation with the spring 39 described below. Of course, the washer 38 may not be provided, depending on the actual needs.
[0056] In this embodiment, preferably, as follows: Figure 3 and Figure 7As shown, the screen angle adjustment mechanism 3 also includes a spring 39. The spring 39 is sleeved on the outside of the sleeve portion 351 and located inside the mounting through hole. The inner wall of the mounting through hole is formed with a mounting groove 3141. The spring 39 is located inside the mounting groove 3141. Along the first preset direction, one end of the spring 39 abuts against the inner wall of one end of the mounting groove 3141, and the other end of the spring 39 abuts against the fixing member 36. The spring 39 is in a compressed state. It should be noted that when a washer 38 is provided between the fixing member 36 and the fixing seat 314, the other end of the spring 39 directly abuts against the washer 38. When no washer 38 is provided between the fixing member 36 and the fixing seat 314, the other end of the spring 39 directly abuts against the fixing member 36.
[0057] As can be seen from the structure described above, the spring 39 always provides a preload force to the adjusting sleeve 35 along the axial direction, so that the angle after rotation remains unchanged, that is, the opening of the screen plate 2 remains unchanged. Only a wrench can be used to rotate the adjusting sleeve 35, thus ensuring the reliability of the adjustment.
[0058] In this embodiment, preferably, as follows: Figure 2 , Figure 3 and Figure 7 As shown, the end of the adjusting member 34 near the connecting member 32 is a U-shaped connector 341. The connecting member 32 has a connecting protrusion 322, which is inserted into the U-shaped connector 341 and can be detachably connected by fastening members such as screws or bolts.
[0059] As can be seen from the structure described above, the end of the adjusting member 34 near the connecting member 32 is designed as a U-shaped connector 341, which facilitates the insertion of the connecting protrusion 322 of the connecting member 32 into it, and finally locks it with the fastening member, making the overall structure more stable.
[0060] Furthermore, preferably, the fastening member can be a combination structure of bolt 312 and nut 313, that is, the connecting protrusion 322 and the U-shaped connector 341 are detachably connected by bolt 312 and nut 313.
[0061] In this embodiment, preferably, as follows: Figure 9 , Figure 11 , Figure 13 and Figure 14As shown, the support member 31 has an installation notch extending along a second preset direction, and preferably, along a third preset direction, the installation notch passes through the opposite sides of the support member 31, and the adapter member 33 is rotatably inserted into the installation notch; the screen angle adjustment mechanism 3 also includes a limiting member 310, which is connected to the screen frame 1, and along the second preset direction, the adapter member 33 abuts against the limiting member 310 to limit the limiting member 310 so that the adapter member 33 and the support member 31 rotate at a preset position.
[0062] As can be seen from the structure described above, the bottom end of the connecting member 33 located on the side of the above-mentioned mounting notch, that is, the straight rod part 331 described below, just abuts against the top of the limiting member 310. This makes the connecting member 33 only able to rotate and not move, thereby preventing the screen plate 2 connected to it from moving and only able to rotate, thus adjusting the opening and making the structure more reliable.
[0063] Furthermore, preferably, the installation notch extends through the bottom of the support member 31 along the second preset direction, which facilitates assembly with the adapter member 33.
[0064] Furthermore, preferably, any two of the first preset direction, the second preset direction, and the third preset direction are set perpendicular to each other; however, this is not the only option.
[0065] Furthermore, preferably, the second preset direction is the vertical direction, i.e., the Z direction, and the third preset direction is the Y direction, but of course, it is not limited to this.
[0066] In this embodiment, preferably, as follows: Figure 14 As shown, along the third preset direction, the limiting member 310 is disposed on the side of the screen plate 2 and the supporting member 31, and is located between the screen plate 2 and the supporting member 31.
[0067] As can be seen from the structure described above, the limiting member 310 is set in the side area between the sieve plate 2 and the supporting member 31, which makes full use of the space and avoids interference, making the overall structure more reasonable and stable.
[0068] In this embodiment, preferably, as follows: Figure 1 and Figure 13 As shown, along the third preset direction, multiple screen plates 2 are provided on both sides of the connecting member 32, and the multiple screen plates 2 on each side are arranged sequentially at intervals along the first preset direction to form a single-sided screen plate assembly 4, and each single-sided screen plate assembly 4 is equipped with a support member 31 and a connecting member 33.
[0069] As can be seen from the structure described above, the structure with multiple screen plates 2 on both sides of the connecting member 32 helps to improve the screening effect and meet the actual use requirements. Of course, it is not limited to this. A single-sided screen plate assembly 4 can also be set on only one side of the connecting member 32, depending on the actual needs.
[0070] In this embodiment, preferably, as follows: Figure 13 and Figure 14 As shown, the adapter 33 includes a straight rod portion 331 and a U-shaped rod portion 332 connected to each other; there are two straight rod portions 331, which are respectively arranged on the two outer sides of the opening of the U-shaped rod portion 332; the two screen plates 2 on both sides of the connecting member 32 are respectively connected to the two straight rod portions 331 in a one-to-one correspondence.
[0071] As can be seen from the structure described above, the area of the transition member 33 that mates with the clearance notch 321 of the connecting member 32 is designed as a U-shaped rod 332. This allows the U-shaped rod 332 to rotate and move within the clearance notch 321. Furthermore, the straight rod 331 and the U-shaped rod 332 form a height difference, allowing the straight rod 331 to connect with the screen plate 2 at a higher position, thus meeting the spatial assembly requirements.
[0072] Furthermore, preferably, the straight rod portion 331 and the U-shaped rod portion 332 are an integral structure with high overall strength and are not easily damaged. Of course, it is not limited to this and can also be a separate structure, connected by welding or bolts 312.
[0073] In this embodiment, preferably, as follows: Figure 2 and Figure 3 As shown, the sieve angle adjustment mechanism 3 also includes an auxiliary action sleeve 311. The auxiliary action sleeve 311 is fixedly sleeved on the end of the adjustment sleeve 35 away from the connecting member 32, and the cross section of the auxiliary action sleeve 311 along the length direction perpendicular to the auxiliary action sleeve 311 is polygonal.
[0074] As can be seen from the structure described above, an auxiliary action sleeve 311 is fixedly sleeved on one end of the adjusting sleeve 35 exposed on the fixed base 314, forming a multi-faceted prism structure. This facilitates the use of a wrench and makes it easier to rotate the adjusting sleeve 35. Of course, it is not limited to this. The auxiliary action sleeve 311 may not be provided, and the wrench may be applied directly to the end of the adjusting sleeve 35. The specific choice depends on the actual needs.
[0075] In this embodiment, preferably, as follows: Figure 5 and Figure 14 As shown, both the connecting member 32 and the supporting member 31 can be plate-shaped structures, but they are not limited to this.
[0076] In this embodiment, preferably, as follows: Figure 2 and Figure 3 As shown, the mounting base 314 is rectangular, but it is not limited to this.
[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A harvesting machinery cleaning sieve, characterized in that, include: A sieve frame, a sieve plate, and a sieve plate angle adjustment mechanism are provided. The sieve plate is rotatably disposed within the sieve frame. The sieve plate angle adjustment mechanism includes a support member, a connecting member, a transition member, a fixed base, an adjusting member, and an adjusting sleeve. The fixed base is fixed to the sieve frame. The adjusting sleeve is rotatably mounted on the fixed base. A portion of the adjusting member is inserted into the adjusting sleeve and threadedly connected, and when the adjusting sleeve rotates, it can drive the adjusting member to move along a first preset direction. The connecting member is connected to the adjusting member, and the connecting member has an avoidance notch; the transition member passes through the avoidance notch, and the transition member can rotate and move within the avoidance notch; the supporting member is fixed within the screen frame, the transition member is rotatably connected to the supporting member, and the screen plate is fixedly connected to the transition member.
2. Harvesting machine cleaning sieve according to claim 1, characterized in that The fixing seat has mounting through holes extending through its opposite sides along the first preset direction; the adjusting sleeve includes a sleeve portion and a limiting portion connected sequentially along the first preset direction, and the sleeve portion is inserted into the mounting through hole. The limiting part abuts against the end of the fixing seat near the connecting member; the end of the sleeve part away from the connecting member extends to the outside of the fixing seat; The limiting part has a through hole, and a portion of the structure of the adjusting member extends through the through hole into the interior of the sleeve and is threadedly connected to the sleeve.
3. The harvesting machine cleaning shoe of claim 2, wherein, The screen angle adjustment mechanism further includes a fixing member and a pin. The fixing member is sleeved on the structure of the sleeve portion extending to the outside of the fixing seat, and the fixing member is connected to the sleeve portion through the pin. The sleeve portion extends to the side of the fixing member away from the fixing seat.
4. The harvesting machine cleaning shoe of claim 3, wherein, The sieve angle adjustment mechanism also includes a washer, which is sleeved on the sleeve portion and pressed between the end of the fixed seat and the fixed member along the first preset direction.
5. The harvesting machine cleaning shoe of claim 3, wherein, The sieve angle adjustment mechanism further includes a spring, which is sleeved on the outside of the sleeve portion and located within the mounting through hole; the inner wall of the mounting through hole has a mounting groove, the spring is located within the mounting groove, and along the first preset direction, one end of the spring abuts against the inner wall of one end of the mounting groove, the other end of the spring abuts against the fixing member, and the spring is in a compressed state; and / or The fixing component is a nut, and the sleeve portion is threadedly connected to the nut.
6. The harvesting machine cleaning shoe of claim 1, wherein, The end of the adjusting member near the connecting member is a U-shaped connector. The connecting member has a connecting protrusion, which is inserted into the U-shaped connector and can be detachably connected by a fastening member.
7. The harvesting machine cleaning shoe of claim 1, wherein, The supporting member has an installation notch extending along a second preset direction, and the connecting member is rotatably inserted into the installation notch; The sieve plate angle adjustment mechanism further includes a limiting member, which is connected to the sieve frame and, along a second preset direction, the connecting member abuts against the limiting member to limit the limiting member, so that the connecting member and the supporting member rotate at a preset position.
8. The harvesting machine cleaning shoe of claim 7, wherein, Along a third preset direction, the limiting member is disposed on the side of the sieve plate and the supporting member, and is located between the sieve plate and the supporting member.
9. The harvesting machine cleaning shoe of claim 1, wherein, Along the third preset direction, multiple screen plates are provided on both opposite sides of the connecting member, and the multiple screen plates on each side are arranged sequentially at intervals along the first preset direction to form a single-sided screen plate assembly, and each single-sided screen plate assembly is equipped with the supporting member and the connecting member.
10. A harvesting machine cleaning shoe according to any one of claims 1 to 9, characterized in that, The connecting member includes two connected straight rod sections and two U-shaped rod sections; wherein, the number of straight rod sections is two, and they are respectively disposed on the two outer sides of the opening of the U-shaped rod section; the two screen plates on both sides of the connecting member are respectively connected to the two straight rod sections in a one-to-one correspondence; and / or The sieve angle adjustment mechanism further includes an auxiliary action sleeve, which is fixedly sleeved on the end of the adjustment sleeve away from the connecting member, and the cross section of the auxiliary action sleeve along the length direction perpendicular to the auxiliary action sleeve is polygonal.