Connecting plate, cleaning scale sieve and sieve box of harvester

Abstract

The utility model relates to the technical field of harvesting machinery, in particular to a connecting plate, a cleaning scale sieve and a sieve box of a harvester, the connecting plate comprises a body, a supporting part and a reinforcing part, the supporting part is arranged on one side of the body and connected with the body, and the reinforcing part is arranged on the other side of the body and connected with the body; the body and the supporting part form mounting planes, and the mounting planes are used for being matched with the inner wall of the screen box. According to the novel connecting plate structure provided by the invention, the supporting part is additionally arranged on the body of the upper connecting plate, so that the mounting plane on the body is matched with the inner wall of the box body of the screen box, and the mounting plane on the supporting part is also matched with the inner wall of the box body of the screen box, so that the assembly area is increased; according to the upper connecting plate, the cleaning fish scale sieve with the upper connecting plate and a box body of a sieve box are assembled more stably, the structure is more reliable, in addition, the reinforcing part is arranged on the body of the upper connecting plate, the effect of increasing the strength of the upper connecting plate is achieved, the upper connecting plate is not prone to deformation, and stability and reliability are further improved.

Description

Technical Field

[0001] This application relates to the field of harvesting machinery technology, and in particular to a connecting plate, a fish scale cleaning screen, and a screen box for a harvester. Background Technology

[0002] Tracked harvesting machinery is a type of machinery mainly used for agricultural harvesting. It has the ability to operate on various terrains such as farmland and plains. Most existing tracked harvesting machinery adopts a structure in which the longitudinal axial flow drum and the screen box are arranged in parallel. With the gradual increase in feeding amount and operating speed, the upper connecting plate of the fish scale cleaning screen in the screen box becomes unstable and easily deformed, which leads to poor stability and reliability of the fish scale cleaning screen. Utility Model Content

[0003] The purpose of this application is to provide a connecting plate, a fish scale cleaning screen, and a screen box for a harvester, which to a certain extent solves the technical problem that the upper connecting plate of the fish scale cleaning screen in existing tracked harvesting machinery is unstable and easily deformed, which leads to poor stability and reliability of the fish scale cleaning screen.

[0004] This application provides a connecting plate, including: a body, a support portion, and a reinforcing portion; wherein, the support portion is disposed on one side of the body and connected to the body, and the reinforcing portion is disposed on the opposite side of the body and connected to the body; both the body and the support portion form mounting planes, and both mounting planes are used to mate with the inner wall of the screen box.

[0005] In the above technical solution, the body further includes a first mounting part, a connecting part, and a second mounting part connected in sequence; wherein the first mounting part and the second mounting part both form an obtuse angle with the connecting part, and the first mounting part and the second mounting part are arranged parallel to each other;

[0006] The reinforcing part is disposed within the first mounting space enclosed by the first mounting part and the connecting part, and the reinforcing part is connected to both of them respectively; the supporting part is disposed within the second mounting space enclosed by the second mounting part and the connecting part, and the supporting part is connected to both of them respectively; the supporting part and the first mounting part are flush and both form the mounting plane.

[0007] In any of the above technical solutions, the first mounting portion is further provided with a first mounting through hole, and the diameter of the first mounting through hole is 8mm.

[0008] In any of the above technical solutions, the second mounting portion further includes a second mounting through hole.

[0009] In any of the above technical solutions, the connecting plate is further made of polyhexamethylene adipamide.

[0010] In any of the above technical solutions, the number of the reinforcing parts is multiple, and they are arranged sequentially at intervals along the length direction of the body.

[0011] In any of the above technical solutions, the number of the support portions is multiple, and they are arranged sequentially at intervals along the length direction of the body.

[0012] This application also provides a fish scale cleaning screen, which includes the connecting plate described in any of the above technical solutions, and the connecting plate is an upper connecting plate. Therefore, it has all the beneficial technical effects of the connecting plate, which will not be repeated here.

[0013] In the above technical solution, the fish scale cleaning screen further includes a toothed plate assembly and a lower connecting plate; wherein, the toothed plate assembly includes a plurality of toothed plates, which are sequentially parallel and inclined along a first preset direction and spaced apart; the number of upper connecting plates is two, which are respectively arranged on opposite sides of the toothed plate assembly along a second preset direction;

[0014] The number of lower connecting plates is two, and they are respectively disposed on opposite sides of the toothed plate assembly along the second preset direction; the upper connecting plate is disposed above the lower connecting plate along the third preset direction; each of the toothed plates is rotatably connected to the upper connecting plate and the lower connecting plate respectively.

[0015] This application also provides a screen box for a harvester, including the fish scale cleaning screen described in any of the above technical solutions, and thus has all the beneficial technical effects of the fish scale cleaning screen, which will not be repeated here.

[0016] In the above technical solution, the sieve box of the harvester further includes a box body, the mounting planes of the upper connecting plates on both sides of the cleaning fish scale sieve and the support part respectively cooperate with the inner wall of the box body, and the body is fixedly connected to the inner wall of the box body.

[0017] In any of the above technical solutions, the sieve box of the harvester further includes an adjusting plate, which is disposed on the outer wall of the box body; upper rotating connecting parts are formed on opposite sides of the toothed plate, upper connecting plates on both sides are formed with upper auxiliary mounting through holes, and the upper rotating connecting parts are rotatably connected to the corresponding upper auxiliary mounting through holes, and one of the upper rotating connecting parts is formed with an insertion groove.

[0018] The adjusting plate has a plug-in protrusion, and the side wall of the housing and the corresponding upper connecting plate both have mounting through holes. The plug-in protrusion is rotatably inserted into the mounting through hole, and the end of the plug-in protrusion can pass through the mounting through hole and be inserted into the plug-in slot. The adjusting plate can drive the toothed plate connected to it to rotate, and then drive the other toothed plates to rotate synchronously through the lower connecting plate to adjust the angle of the toothed plates.

[0019] In any of the above technical solutions, the screen box of the harvester further includes a locking screw and a locking nut, the adjusting plate has an arc-shaped through hole, and the arc-shaped through hole is centered on the mounting through hole; the corresponding upper connecting plate has a threaded hole, the locking screw is installed in the arc-shaped through hole and the threaded hole, and is locked by the locking nut abutting against the side of the adjusting plate opposite to the upper connecting plate.

[0020] In any of the above technical solutions, the bodies of the upper connecting plates on both sides are further detachably connected to the inner walls on both sides of the box body by fastening components.

[0021] Compared with the prior art, the beneficial effects of this application are as follows:

[0022] This application provides a novel connecting plate structure, in which a support portion is added to the main body of the upper connecting plate. This allows the mounting plane on the support portion to mate with the inner wall of the screen box, in addition to the mounting plane on the main body engaging with the inner wall of the screen box. This increases the assembly area, making the assembly of the fish scale cleaning screen with this upper connecting plate with the screen box more stable and the structure more reliable. Furthermore, a reinforcing portion is provided on the main body of the upper connecting plate to increase its strength, making it less prone to deformation and further improving stability and reliability. Attached Figure Description

[0023] 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.

[0024] Figure 1 This is a schematic diagram of the structure of the connecting plate provided in an embodiment of this application;

[0025] Figure 2 Another structural schematic diagram of the connecting plate provided in the embodiments of this application;

[0026] Figure 3Another structural schematic diagram of the connecting plate provided in the embodiments of this application;

[0027] Figure 4 This is a schematic diagram of the structure of the fish scale cleaning sieve provided in the embodiments of this application;

[0028] Figure 5 This is a schematic diagram of the structure of the sieve box provided in an embodiment of this application;

[0029] Figure 6 for Figure 5 A magnified structural diagram at point A;

[0030] Figure 7 A partial exploded view of the fish scale cleaning sieve provided in the embodiments of this application.

[0031] Figure label:

[0032] 10-Upper connecting plate, 11-Body, 111-First mounting part, 1111-First mounting through hole, 112-Connecting part, 113-Second mounting part, 1131-Second mounting through hole, 12-Supporting part, 13-Reinforcing part, 20-Gear plate assembly, 201-Gear plate, 30-Lower connecting plate, 40-Pin shaft, 50-Box body, 501-Side wall of the box body, 5011-Arc-shaped guide hole, 60-Adjusting plate, 601-Arc-shaped through hole, 70-Locking screw, 80-Locking nut, 90-Guide rod. Detailed Implementation

[0033] 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.

[0034] 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.

[0035] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0036] 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.

[0037] 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.

[0038] The following reference Figures 1 to 7 The present application describes a connecting plate, a fish scale cleaning screen, and a screen box for a harvester according to some embodiments thereof.

[0039] Example 1

[0040] See Figures 1 to 6 As shown, an embodiment of this application provides a connecting plate, including: a body 11, a support portion 12, and a reinforcing portion 13; wherein, the support portion 12 is disposed on one side of the body 11 and is connected to the body 11, and the reinforcing portion 13 is disposed on the opposite side of the body 11 and is connected to the body 11; both the body 11 and the support portion 12 form mounting planes, and both mounting planes are used to mate with the inner wall of the screen box.

[0041] It should be noted that this application provides a novel connecting plate structure, which can be applied to a fish scale cleaning screen as a structure for assembling the fish scale cleaning screen and the inner wall of the screen box. Preferably, the connecting plate provided in this application can be used as the upper connecting plate 10, and this will be used as an example in the following description. That is to say, the upper connecting plate 10 will be referred to as such in the following description. Of course, it is not limited to this. The connecting plate provided in this application can also be applied to other positions according to actual needs. The specific application depends on the actual needs.

[0042] As can be seen from the structure described above, this application provides a novel upper connecting plate structure. A support portion 12 is added to the body 11 of the upper connecting plate 10, so that in addition to the mounting plane on the body 11 cooperating with the inner wall of the screen box 50, the mounting plane on the support portion 12 also cooperates with the inner wall of the screen box 50, increasing the assembly area. This makes the fish scale cleaning screen with the upper connecting plate 10 more stably assembled with the screen box 50, and the structure more reliable. In addition, a reinforcing portion 13 is provided on the body 11 of the upper connecting plate 10 to increase the strength of the upper connecting plate 10, making it less prone to deformation, and further improving stability and reliability.

[0043] In this embodiment, preferably, as follows: Figures 1 to 3 , Figure 6 As shown, the main body 11 includes a first mounting part 111, a connecting part 112, and a second mounting part 113 connected in sequence; wherein, the first mounting part 111 and the second mounting part 113 both form an obtuse angle with the connecting part 112, and the first mounting part 111 and the second mounting part 113 are arranged in parallel, so that the three form a Z-shaped structure.

[0044] The reinforcing part 13 is disposed within the first mounting space enclosed by the first mounting part 111 and the connecting part 112, and the reinforcing part 13 is connected to both of them respectively; the supporting part 12 is disposed within the second mounting space enclosed by the second mounting part 113 and the connecting part 112, and the supporting part 12 is connected to both of them respectively; the supporting part 12 is flush with the first mounting part 111, and both of them form a mounting plane.

[0045] As can be seen from the structure described above, the first mounting part 111 and the support part 12, as structures that cooperate with the inner wall of the box 50 of the screen box, increase the assembly area and improve stability and reliability; the second mounting part 113 can be connected to the toothed plate 201 described below to support the toothed plate 201; the connecting part 112 serves to connect the first mounting part 111 and the second mounting part 113 together, that is, to serve as a transition, and also ensures that the first mounting part 111 and the second mounting part 113 are not located on the same plane, and that a length difference is formed between them along the length direction of the toothed plate 201, thereby avoiding the pin 40 connecting the second mounting part 113 and the toothed plate 201, and preventing interference.

[0046] Furthermore, preferably, the first mounting part 111, the connecting part 112 and the second mounting part 113 can be an integral structure with high overall strength and not easily damaged. Of course, it is not limited to this and can also be a separate structure, etc., which can be assembled together later.

[0047] Furthermore, preferably, the support portion 12 and the body 11 can also be an integral structure, but of course, it is not limited to this.

[0048] Furthermore, preferably, the reinforcing part 13 and the body 11 can also be an integral structure, but of course, it is not limited to this.

[0049] In this embodiment, preferably, as follows: Figure 1 As shown, the first mounting portion 111 has a first mounting through hole 1111, and the diameter of the first mounting through hole 1111 is 8mm.

[0050] As can be seen from the structure described above, the first mounting through hole 1111 is used to install fastening components such as bolts as described below. That is, the upper connecting plate 10 of the fish scale cleaning screen can be fixed to the inner wall of the screen box by fastening components such as bolts. Moreover, compared with the 6mm diameter hole in the prior art, the diameter of the first mounting through hole 1111 in this application is increased to 8mm, which reduces the wear on fastening components such as bolts, thereby making the fastening components such as bolts less prone to breakage and improving the stability and reliability of the overall structure.

[0051] In this embodiment, preferably, as follows: Figure 1 As shown, the second mounting part 113 has a second mounting through hole 1131, which can be used to mount the pin 40, thereby connecting the second mounting part 113 to the toothed plate 201.

[0052] In this embodiment, preferably, the upper connecting plate 10 is made of polyhexamethylene adipamide, commonly known as nylon-66.

[0053] As can be seen from the structure described above, the upper connecting plate 10 is made of polyhexamethylene adipamide, which has high tensile strength and excellent wear resistance. It can maintain stable performance in high-load and frequent friction environments, and also has heat resistance, as well as good mechanical and processing properties.

[0054] In this embodiment, preferably, as follows: Figure 3 As shown, there are multiple reinforcing parts 13, which are arranged sequentially at intervals along the length of the main body 11.

[0055] As can be seen from the structure described above, multiple reinforcing parts 13 are sequentially arranged along the length of the main body 11, which further increases the assembly area between the upper connecting plate 10 and the screen box of the fish scale cleaning screen, making the fish scale cleaning screen more stable and reliable.

[0056] Furthermore, preferably, the reinforcing part 13 can be an obtuse-angled triangular plate, but of course, it is not limited to this.

[0057] In this embodiment, preferably, as follows: Figure 1 As shown, there are multiple support parts 12, which are arranged sequentially at intervals along the length of the main body 11.

[0058] As can be seen from the structure described above, multiple support parts 12 are arranged sequentially along the length of the main body 11, which further increases the strength of the upper connecting plate 10 and makes the upper connecting plate 10 less prone to deformation.

[0059] Furthermore, preferably, the support portion 12 can be a right-angled trapezoidal plate, but of course, it is not limited to this.

[0060] Example 2

[0061] See Figure 4 As shown, Embodiment 2 of this application also provides a fish scale cleaning screen, which includes the connecting plate described in Embodiment 1 above. Therefore, it has all the beneficial technical effects of the connecting plate. The same technical features and beneficial effects will not be repeated here.

[0062] In this embodiment, preferably, as follows: Figures 1 to 6 As shown, the fish scale cleaning screen also includes a toothed plate assembly 20 and a lower connecting plate 30; wherein, the toothed plate assembly 20 includes a plurality of toothed plates 201, which are sequentially parallel and inclined along a first preset direction and spaced apart; the aforementioned connecting plate is an upper connecting plate 10, and there are two upper connecting plates 10, which are respectively arranged on opposite sides of the toothed plate assembly 20 along a second preset direction.

[0063] There are two lower connecting plates 30, which are respectively disposed on opposite sides of the toothed plate assembly 20 along the second preset direction; the upper connecting plate 10 is disposed above the lower connecting plate 30 along the third preset direction; any toothed plate 201 is rotatably connected to the upper connecting plate 10 and the lower connecting plate 30 respectively.

[0064] As can be seen from the structure described above, the fish scale cleaning screen provided in this application uses multiple toothed plates 201, wherein a screening gap is formed between any two adjacent toothed plates 201, thereby screening the material. It can also be connected to the inner wall of the screen box through the upper connecting plate 10. Moreover, a support part 12 is added to the body 11 of the upper connecting plate 10, so that in addition to the mounting plane on the body 11 cooperating with the inner wall of the screen box, the mounting plane on the support part 12 also cooperates with the inner wall of the screen box, increasing the assembly area. This makes the fish scale cleaning screen with the upper connecting plate 10 more stable and the structure more reliable when assembled with the screen box. In addition, a reinforcing part 13 is provided on the body 11 of the upper connecting plate 10, which increases the strength of the upper connecting plate 10, making it less prone to deformation, and further improving stability and reliability.

[0065] It should be noted that the second preset direction can be the length direction of the toothed plate 201, the third preset direction can be the vertical direction, and the first preset direction is set perpendicular to the second preset direction and the third preset direction respectively.

[0066] In this embodiment, preferably, as follows: Figure 4As shown, any toothed plate 201 is rotatably connected to the upper connecting plate 10 on one side and all the lower connecting plates 30 via pins 40. This is a detachable connection method that does not affect the rotation of the toothed plate 201, making it convenient for later maintenance. Of course, it is not limited to this.

[0067] Furthermore, preferably, the toothed plate 201 and the second mounting portion 113 of the upper connecting plate 10 on one side are detachably connected by a pin 40, and preferably, the pin 40 can be installed in the second mounting through hole 1131 of the second mounting portion 113 of the upper connecting plate 10.

[0068] Example 3

[0069] See Figure 5 As shown, Embodiment 3 of this application also provides a sieve box for a harvester, including the fish scale cleaning sieve described in Embodiment 2 above. Therefore, it has all the beneficial technical effects of the fish scale cleaning sieve. The same technical features and beneficial effects will not be repeated here.

[0070] In this embodiment, preferably, as follows: Figure 5 and Figure 6 As shown, the sieve box of the harvester also includes a box body 50. The mounting planes of the upper connecting plates 10 on both sides of the fish scale sieve and the support part 12 respectively cooperate with the inner wall of the box body 50, and the body 11 is fixedly connected to the inner wall of the box body 50.

[0071] As can be seen from the structure described above, this application provides a novel screen box for a harvester. The fish scale cleaning screen uses multiple toothed plates 201, wherein a screening gap is formed between any two adjacent toothed plates 201, thereby screening the material. The fish scale cleaning screen can be connected to the inner wall of the screen box body 50 through the upper connecting plate 10. Moreover, a support part 12 is added to the body 11 of the upper connecting plate 10, so that in addition to the mounting plane on the body 11 cooperating with the inner wall of the screen box body 50, the mounting plane on the support part 12 also cooperates with the inner wall of the screen box body 50, increasing the assembly area and making the fish scale cleaning screen with the upper connecting plate 10 more stable and the structure more reliable. In addition, a reinforcing part 13 is provided on the body 11 of the upper connecting plate 10 to increase the strength of the upper connecting plate 10, making it less prone to deformation, and further improving stability and reliability.

[0072] In this embodiment, preferably, as follows: Figure 7 As shown, the harvester's screen box also includes an adjusting plate 60, which is disposed on the outer wall of the box body 50; upper rotating connecting parts are formed on opposite sides of the toothed plate 201, and upper auxiliary mounting through holes are formed on both sides of the upper connecting plate 10, and the upper rotating connecting parts are rotatably connected to the corresponding upper auxiliary mounting through holes, and one of the upper rotating connecting parts is formed with an insertion groove.

[0073] The adjusting plate 60 has a plug-in protrusion. The side wall 501 of the housing and the corresponding upper connecting plate 10 are both formed with mounting through holes. The plug-in protrusion is rotatably inserted into the mounting through hole, and the end of the plug-in protrusion can pass through the mounting through hole and be plugged into the plug-in slot. The adjusting plate 60 can drive the toothed plate 201 connected to it to rotate, and then drive the other toothed plates 201 to rotate synchronously through the lower connecting plate 30 to adjust the angle of the toothed plates 201.

[0074] The harvester's screen box also includes a locking screw 70 and a locking nut 80. The adjusting plate 60 has an arc-shaped through hole 601, and the arc-shaped through hole 601 is centered on the mounting through hole. The corresponding upper connecting plate 10 has a threaded hole. The locking screw 70 is installed in the arc-shaped through hole 601 and the threaded hole, and is locked by the locking nut 80 (not shown in the above structural diagram) abutting against the side of the adjusting plate 60 opposite to the upper connecting plate 10.

[0075] As can be seen from the structure described above, when it is necessary to adjust the angle of the toothed plate 201, the locking nut 80 can be loosened to release the restriction on the adjusting plate 60. Then, the adjusting plate 60 can be rotated, which can drive the toothed plate 201 connected to it to rotate. Since all the toothed plates 201 are connected together through the lower connecting plate 30, when one toothed plate 201 rotates, it will drive the other toothed plates 201 to rotate synchronously, thereby adjusting the rotation angle of all the toothed plates 201. After adjusting the angle of the toothed plate 201, the locking nut 80 can be used to fix the locking screw 70, thereby fixing the adjusting plate 60, so that the toothed plate 201 can maintain this state, preventing arbitrary rotation during operation, and improving the stability and reliability of this fish scale cleaning screen during operation.

[0076] Furthermore, preferably, the sieve box of the harvester also includes a guide rod 90, which is mounted on the adjusting plate 60, and the side wall 501 of the box body is provided with an arc-shaped guide hole 5011. The guide rod 90 can rotate within the arc-shaped guide hole 5011, that is, it can rotate synchronously with the adjusting plate 60 to play a guiding role.

[0077] In this embodiment, preferably, the body 11 of the upper connecting plate 10 on both sides is detachably connected to the inner walls on both sides of the box 50 by fastening components (not shown in the figure).

[0078] As can be seen from the structure described above, the first mounting part 111 of the body 11 of the upper connecting plate 10 and the inner wall of the box 50 can be detachably connected by fastening components such as bolts, which facilitates disassembly and maintenance in the future. Of course, it is not limited to this. The body 11 of the upper connecting plate 10 and the inner wall of the box 50 can also be connected by snap-fit ​​or welding, depending on the actual needs.

[0079] 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 connecting plate, characterized in that The body, the support part and the reinforcing part; wherein the support part is arranged on one side of the body and connected with the body, and the reinforcing part is arranged on the other side of the body and connected with the body; the body and the support part both form mounting planes, and the mounting planes of the body and the support part are both used for cooperating with the inner wall of the screen box; The body comprises a first mounting part, a connecting part and a second mounting part connected in sequence; wherein the first mounting part and the second mounting part both form an obtuse angle with the connecting part, and the first mounting part and the second mounting part are arranged in parallel; The reinforcing part is arranged in a first mounting space surrounded by the first mounting part and the connecting part, and the reinforcing part is connected with the first mounting part and the connecting part respectively; the support part is arranged in a second mounting space surrounded by the second mounting part and the connecting part, and the support part is connected with the second mounting part and the connecting part respectively; the support part is arranged in parallel with the first mounting part, and both form the mounting planes. The first mounting part forms a first mounting through hole, and the diameter of the first mounting through hole is 8mm; and / or 2. The web of claim 1, wherein The second mounting part forms a second mounting through hole. The material of the connecting plate is polyhexamethylene adipamide.

3. The web of claim 1, wherein The number of the reinforcing parts is multiple, and the reinforcing parts are arranged in sequence and at intervals along the length direction of the body; and / or 4. The web of any one of claims 1 to 3, wherein, The number of the support parts is multiple, and the support parts are arranged in sequence and at intervals along the length direction of the body. The tooth plate assembly, the lower connecting plate and the connecting plate of any one of claims 1 to 4 are included, and the connecting plate is an upper connecting plate; wherein the tooth plate assembly comprises multiple tooth plates, and the tooth plates are arranged in sequence, in parallel and at intervals along a first preset direction; the number of the upper connecting plates is two, and the upper connecting plates are arranged on the opposite sides of the tooth plate assembly along a second preset direction respectively; 5. A fish scale cleaning screen, characterized by The number of the lower connecting plates is two, and the lower connecting plates are arranged on the opposite sides of the tooth plate assembly along the second preset direction respectively; along a third preset direction, the upper connecting plates are arranged above the lower connecting plates; any tooth plate is rotatably connected with the upper connecting plate and the lower connecting plate respectively. The box body and the cleaning fish scale screen of claim 5 are included; wherein the mounting planes of the bodies and the support parts of the upper connecting plates on the two sides of the cleaning fish scale screen are respectively matched with the inner walls of the box body, and the bodies are fixedly connected with the inner walls of the box body.

6. A sieve box for a harvester, characterized in that The screen box of the harvester further comprises an adjusting plate arranged on the outer wall of the box body; the opposite sides of the tooth plate both form upper rotary connecting parts, the upper connecting plates on the two sides both form upper auxiliary mounting through holes, the upper rotary connecting parts are rotatably connected with the corresponding upper auxiliary mounting through holes, and one of the upper rotary connecting parts forms a plug-in slot; 7. A screen box for a harvester as claimed in claim 6, characterised in that, ​ The adjusting plate is formed with a plug-in protrusion, the side wall of the box body and the corresponding upper connecting plate are both formed with a mounting through hole, the plug-in protrusion is rotatably arranged in the mounting through hole, and the end of the plug-in protrusion can pass through the mounting through hole and be plugged into the plug-in groove, the adjusting plate can drive the gear plate connected thereto to rotate, and then the remaining gear plates are synchronously rotated through the lower connecting plate, so that the angle of the gear plate is adjusted.

8. A screen box for a harvester as claimed in claim 7, characterised in that, The sieve box of the harvester further comprises a locking screw and a locking nut, the adjusting plate is formed with an arc-shaped through hole, and the arc-shaped through hole is arranged at the center of the mounting through hole; the corresponding upper connecting plate is formed with a threaded hole, the locking screw is arranged in the arc-shaped through hole and the threaded hole, and the locking nut is locked by abutting against the side of the adjusting plate away from the upper connecting plate.

9. The harvester's sieve box according to claim 6, characterized in that, The body of the upper connecting plate on both sides and the inner wall of the box body on both sides are detachably connected through fastening members.

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