A sieve plate for a combine harvester

Abstract

The utility model relates to the technical field of sieve piece of combine harvester, concretely relates to a sieve piece of combine harvester, including sieve plate, sieve tooth and sieve frame, and is equipped with sieve axle and fixed link between the opposite two side surfaces of sieve frame inboard, the opposite two side surfaces of sieve axle are penetrated through sieve frame and are connected with sieve frame rotation, and the both ends of fixed link are fixedly connected with the opposite two surfaces of sieve frame inboard, the one end of sieve axle is connected with adjusting assembly and is penetrated through sieve frame, and sieve plate and sieve tooth are independently arranged, and the one end of sieve plate near sieve axle is rotationally connected with sieve frame through sieve axle, and the one end of sieve tooth near fixed link is fixedly connected with fixed link, the utility model independently arranges sieve tooth and sieve plate, and sieve axle drives sieve plate to rotate, and fixed link fixes sieve tooth, and sieve plate keeps still when rotating and adjusting clearance, thereby making the working surface always perpendicular to sieve surface, and avoiding the change of sieve material angle caused by the synchronous rotation of sieve tooth and sieve plate.

Description

Technical Field

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

[0002] During combine harvester operation, the screening effect of the screen directly affects the combine harvester's operating efficiency and material separation quality. Currently, most mainstream combine harvester screens in the industry adopt a structure that integrates the screening teeth and the screen plate. When using this type of screen, the gap between multiple screen plates needs to be adjusted by rotating the screen plate to adapt to the screening requirements of materials with different particle sizes. However, since the screening teeth are fixedly connected to the screen plate, the screening teeth will rotate synchronously with the screen plate during the process of adjusting the gap by rotating the screen plate. This causes the angle between the screening teeth and the screened material to change, which in turn affects the sorting and separation effect of the screening teeth on the material, and easily leads to incomplete screening of materials and a large amount of impurities remaining.

[0003] Therefore, a screen for a combine harvester is proposed to solve the problems mentioned above. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a screen for a combine harvester, in which the screening teeth and the screen plate are set independently. The screen shaft drives the screen plate to rotate, and the fixing rod fixes the screening teeth. When the screen plate rotates to adjust the gap, the screening teeth remain stationary, so that the working surface is always perpendicular to the screening surface. This avoids the screening teeth from rotating synchronously with the screen plate, which would cause the screening angle to change. This can solve the problems mentioned in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: including a sieve plate, sieve teeth and a sieve frame, wherein a sieve shaft and a fixing rod are provided between two opposite sides of the inner side of the sieve frame, the sieve shaft passes through the opposite sides of the sieve frame and is rotatably connected to the sieve frame, the two ends of the fixing rod are fixedly connected to the two opposite sides of the inner side of the sieve frame, and an adjustment component is connected to one end of the sieve shaft that passes through the sieve frame; The sieve plate and the sieve teeth are independently arranged. The end of the sieve plate near the sieve shaft is rotatably connected to the sieve frame through the sieve shaft, and the end of the sieve teeth near the fixed rod is fixedly connected to the fixed rod.

[0006] Preferably, the screening teeth are evenly arranged along the length of the screen plate, and a slot is provided on the side of the screen plate near the screening teeth, with the screening teeth located in the slot.

[0007] Preferably, the fixing rod is located below the screen shaft, the screening teeth penetrate the screen plate, the screening teeth are vertically arranged on the upper side of the screen plate, and the screening teeth are bent towards the fixing rod on the lower side of the screen plate.

[0008] Preferably, the screen frame is inclined, and the side of the screening teeth closest to the high side of the screen frame is the working surface, which is perpendicular to the screening surface.

[0009] Preferably, the sieve frame is provided with multiple partition plates, which are used to separate multiple sets of sieve plates and sieve teeth.

[0010] Preferably, the adjusting component is located outside the screen frame, and mounting holes are provided on opposite sides of the screen frame. The adjusting component is used to drive multiple screen shafts to rotate synchronously.

[0011] Compared with the prior art, this utility model provides a screen for a combine harvester, which has the following beneficial effects: 1. The screening teeth and screen plate are set independently. The screen shaft drives the screen plate to rotate. The fixing rod fixes the screening teeth. When the screen plate rotates to adjust the gap, the screening teeth remain stationary, so that the working surface is always perpendicular to the screening surface. This avoids the screening teeth from rotating synchronously with the screen plate, which would cause the screening angle to change, thereby improving the stability of screening. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 An isometric structural schematic diagram of the screen plate of the combine harvester of this utility model; Figure 2 An enlarged structural schematic diagram of point A provided for the sieve plate of the combine harvester of this utility model; Figure 3 A side perspective structural diagram of the screen plate of the combine harvester of this utility model; Figure 4 A partial structural schematic diagram of the sieve plate for the combine harvester of this utility model; Figure 5 A schematic diagram of the sieve plate and sieve teeth structure provided for the sieve of the combine harvester of this utility model.

[0013] In the diagram: 1. Screen plate; 2. Screening teeth; 3. Screen frame; 4. Screen shaft; 5. Fixing rod; 6. Adjustment component; 7. Slot; 8. Working surface; 9. Divider plate; 10. Mounting hole. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0015] Please see Figure 1 - Figure 5 The screen of a combine harvester in this embodiment includes a screen plate 1, screening teeth 2, and a screen frame 3. The screen frame 3 is inclined to provide guidance for screening operations. A screen shaft 4 and a fixing rod 5 are provided between two opposite sides of the inner side of the screen frame 3. The screen shaft 4 passes through the opposite sides of the screen frame 3 and is rotatably connected to the screen frame 3. The two ends of the fixing rod 5 are fixedly connected to the opposite sides of the inner side of the screen frame 3. The screen shaft 4 is a rotating support structure for the screen plate 1. The fixing rod 5 is used to fix the screening teeth 2, so that the position of the screening teeth 2 remains unchanged during operation. One end of the screen shaft 4 that passes through the screen frame 3 is connected to an adjustment component 6. The adjustment component 6 is located outside the screen frame 3 and is used to drive multiple screen shafts 4 to rotate synchronously. The screen frame 3 has mounting holes 10 on opposite sides for mounting screen plates. The adjustment component 6 has multiple connecting rods connected to multiple screen shafts 4. The adjustment component 6 can adjust the gap between multiple screen plates by synchronously driving multiple screen shafts 4.

[0016] The sieve plate 1 and the screening teeth 2 are independently set. The end of the sieve plate 1 near the sieve shaft 4 is rotatably connected to the sieve frame 3 via the sieve shaft 4. The end of the screening teeth 2 near the fixed rod 5 is fixedly connected to the fixed rod 5. The sieve plate 1 can be rotated by the sieve shaft 4 to adjust the gap between adjacent sieve plates 1. The screening teeth 2 remain stationary because they are fixed to the fixed rod 5, preventing them from rotating synchronously with the sieve plate 1. At the same time, the screening teeth 2 are evenly arranged along the length of the sieve plate 1. A slot 7 is opened on the side of the sieve plate 1 near the screening teeth 2. The screening teeth 2 are located in the slot 7. When the sieve plate 1 rotates, the screening teeth 2 are always located in the slot 7. The distance between the screening teeth 2 and the inner side of the slot 7 is small, so the screening material will not fall out of the slot 7 and is evenly distributed. The screening teeth 2 can thoroughly comb the material. The slot 7 provides space for the rotation of the screen plate 1. The fixing rod 5 is located below the screen shaft 4. The screening teeth 2 penetrate the screen plate 1. The screening teeth 2 are set vertically upward on the upper side of the screen plate 1, and the screening teeth 2 are bent towards the fixing rod 5 on the lower side of the screen plate 1. The material can be discharged from the gap between the two screen plates 1 and the space enclosed by the screening teeth 2 on both sides, thereby avoiding the fixing rod 5 from blocking the material. The position of the fixing rod 5 is matched with the bending structure of the screening teeth 2. The upper vertical screening teeth 2 section is used to fully contact the material to comb it, while the lower bent section allows the fixing rod 5 to avoid the gap between the two adjacent screen plates 1, preventing the material from being blocked by the fixing rod 5 during the discharge process.

[0017] The side of the screening tooth 2 closest to the high side of the screen frame 3 is the working surface 8. The working surface 8 is set perpendicular to the screening surface to ensure that the sorting direction of the screening tooth 2 matches the sliding direction of the material and improves the separation effect. When the screen plate 1 rotates to adjust the gap, the screening tooth 2 always remains stationary and the working surface 8 is perpendicular to the screening surface, which avoids the problem of the angle between the screening tooth 2 and the screened material changing due to the rotation of the screen plate 1, and achieves a stable screening effect. The screen frame 3 is equipped with multiple partition plates 9. The partition plates 9 are used to separate multiple sets of screen plates 1 and screening teeth 2. The partition plates 9 divide the interior of the screen frame 3 into multiple independent screening areas. Each area corresponds to a set of screen plates 1 and screening teeth 2. After the material enters the screen frame 3, it is distributed to each area. The partition plates 9 prevent the material from entering other areas and accumulating due to vehicle bumps. At the same time, the design of the screening teeth 2 penetrating the screen plate 1 allows the upper and lower sections of the screening teeth 2 to act on the upper and lower sides of the screen plate 1 respectively. The upper vertical section combs the material, and the lower bent section guides the material to fall.

[0018] The internal structure of adjustment component 6 is a conventional design and will not be described in detail here.

[0019] The working principle of the above embodiment is as follows: The adjusting component 6 is provided with multiple connecting rods connected to multiple screen shafts 4, which drive the multiple screen shafts 4 to rotate synchronously. The screen shafts 4 drive the screen plate 1 to rotate around the screen shafts 4. Since the screening teeth 2 are fixedly connected to the screen frame 3 through the fixing rod 5, the screening teeth 2 remain stationary when the screen plate 1 rotates, so that the working surface 8 of the screening teeth 2 is always perpendicular to the screening surface. The fixing rod 5 is located below the screen shaft 4, and the screening teeth 2 bend downwards towards the fixing rod 5, which can prevent the falling material from being blocked by the fixing rod 5.

[0020] When in use, the screen plates are installed in the screening system of the combine harvester. According to the particle size requirements of the material to be screened, the screen shaft 4 is driven to rotate by adjusting component 6 to adjust the gap between screen plates 1. The material slides down along the screening surface, and the screening teeth 2 comb the material. Throughout the process, the screening teeth 2 remain stationary and the working surface 8 is perpendicular to the screening surface to ensure stable screening effect.

[0021] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0022] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to".

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screen for a combine harvester, characterized in that: The sieve includes a sieve plate (1), sieve teeth (2) and a sieve frame (3). A sieve shaft (4) and a fixing rod (5) are provided between two opposite sides of the inner side of the sieve frame (3). The sieve shaft (4) passes through the opposite sides of the sieve frame (3) and is rotatably connected to the sieve frame (3). The two ends of the fixing rod (5) are fixedly connected to the two opposite sides of the inner side of the sieve frame (3). An adjustment component (6) is connected to one end of the sieve shaft (4) that passes through the sieve frame (3). The sieve plate (1) and the sieve teeth (2) are set independently. The end of the sieve plate (1) near the sieve shaft (4) is rotatably connected to the sieve frame (3) through the sieve shaft (4). The end of the sieve teeth (2) near the fixed rod (5) is fixedly connected to the fixed rod (5).

2. The sieve of a combine harvester according to claim 1, characterized in that: The screening teeth (2) are evenly arranged along the length of the screen plate (1), and a slot (7) is provided on the side of the screen plate (1) near the screening teeth (2), and the screening teeth (2) are located in the slot (7).

3. The sieve of a combine harvester according to claim 1, characterized in that: The fixing rod (5) is located below the sieve shaft (4), the sieve teeth (2) penetrate the sieve plate (1), the sieve teeth (2) are vertically arranged on the side above the sieve plate (1), and the sieve teeth (2) are bent towards the fixing rod (5) on the side below the sieve plate (1).

4. The sieve of a combine harvester according to claim 1, characterized in that: The sieve frame (3) is inclined, and the side of the sieve tooth (2) near the high side of the sieve frame (3) is the working surface (8), which is perpendicular to the sieve surface.

5. The sieve of a combine harvester according to claim 1, characterized in that: The sieve frame (3) is provided with multiple partition plates (9), which are used to separate multiple sets of sieve plates (1) and sieve teeth (2).

6. The sieve of a combine harvester according to claim 1, characterized in that: The adjustment component (6) is located outside the sieve frame (3), and the sieve frame (3) has mounting holes (10) on opposite sides. The adjustment component (6) is used to drive multiple sieve shafts (4) to rotate synchronously.

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