Four-cutter eight-blade modular high-speed stem pulling roller

Abstract

The utility model discloses a four-knife eight-blade modularized high-speed stem pulling roller, relates to the technical field of stem pulling rollers, and aims to solve the technical problem of higher maintenance cost, the four-knife eight-blade modularized high-speed stem pulling roller comprises a fixed head and a rotating head, convex rectangular frames are arranged between the adjacent sides of the fixed head and the rotating head, a supporting module is arranged between the two convex rectangular frames, and the supporting module is connected with the fixed head. Cutter body modules are arranged on the four sides of the periphery of the supporting module, cutting edges protrude from the two sides of the edges of the cutter body modules, a plurality of bolt rods are arranged between the cutting edges at the two linear positions, and the bolt rods penetrate through the supporting module or the convex rectangular frame and are fixedly provided with nuts in a threaded mode. A fastening structure used for tensioning all parts is arranged in the center of the supporting module. Through the hollow design of the convex rectangular frames and the supporting modules, sequential sequencing and attaching, mutual attaching and abutting of the multiple cutter body modules and the combination of the fastening structures, the tool has the advantages that modular maintenance is facilitated, the maintenance cost is reduced, and the stability is high.

Description

Technical Field

[0001] This utility model relates to the field of stem-pulling roller technology, and more specifically, to a modular high-speed stem-pulling roller with four blades and eight edges. Background Technology

[0002] In the corn harvesting process, the stalk-pulling roller plays a crucial role. When the corn stalk is cut by the header and conveyed to the stalk-pulling roller area, the roller grips the corn stalk through relative rotation. As the roller continues to rotate, it pulls the corn stalk backward (or in the harvester's design direction). During this process, the corn ear separates from the stalk due to the pulling force of the roller and its own weight, thus separating the corn ear from the stalk. This facilitates subsequent ear collection, conveying, and threshing operations. Most existing stalk-pulling rollers are one-piece structures, requiring replacement of the entire unit after damage, especially the blade portion in contact with the corn, leading to high maintenance costs. Therefore, we propose a four-blade, eight-edge modular high-speed stalk-pulling roller. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a four-blade, eight-edged modular high-speed stem-pulling roller to solve the current technical problem of high maintenance costs.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a modular high-speed stem-pulling roller with four blades and eight edges, including a fixed head and a rotating head. A convex frame is provided between adjacent sides of the fixed head and the rotating head. A support module is provided between two convex frames. Blade modules are provided on all four sides of the outer perimeter of the support module. Blade modules protrude from both sides of the edge of the blade modules. Multiple bolt rods are provided between two straight-line positions of the blades. The bolt rods pass through the support module or the convex frame and are threaded with nuts. A fastening structure for tightening the components is provided at the center of the support module.

[0005] Preferably, the convex frame and the support module are both hollow designs, and the multiple cutter body modules are closely attached to each other on adjacent sides and their ends are respectively tightly fitted to the fixed head and the rotating head.

[0006] Preferably, the fastening structure includes a central rod, a threaded post fixed to the outer periphery of the bottom end of the central rod, a threaded seat threadedly connected to the outer periphery of the threaded post, and the threaded seat fixed to the convex frame located below.

[0007] Preferably, the center rod is provided with a bushing on its outer periphery, and an extension rod is fixed between the outer periphery of the bushing and the support module.

[0008] Preferably, a transmission bevel gear is connected to the top of the central rod, the transmission bevel gear meshes with a driving bevel gear, and one end of the driving bevel gear is connected to a rotating head that passes through the rotating head.

[0009] Preferably, the fixed head and the rotating head have grooves on the side near the support module, and the grooves engage with the end of the support module.

[0010] Preferably, the plurality of blades are divided into long and short blades of different lengths.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model utilizes the hollow design of the convex rectangular frame and the support module, which are sequentially arranged and fitted together. Furthermore, multiple blade modules are tightly fitted together and fixed with bolts and nuts. This allows for disassembly and replacement based on the damaged areas, enabling modular component replacement and solving the problem of high maintenance costs.

[0013] 2. This utility model also improves the connection stability between modules by using the central rotation connection design of the central rod and the meshing design of the active bevel gear and the through bevel gear, and by the cooperation of the threaded column and the threaded seat, combined with the engagement of the groove and the cutter body module and the tight fit design of the cutter body module. This achieves the effect of improving stability and further solves the problem of poor connection stability between modules. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0016] Figure 3 In this utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0017] Figure 4 In this utility model Figure 2 Enlarged view of the structure at point B.

[0018] The labels in the diagram are as follows: 1. Fixed head; 2. Rotating head; 3. Convex frame; 4. Support module; 5. Blade body module; 6. Blade; 7. Bolt rod; 8. Nut; 9. Fastening structure; 10. Extension rod; 11. Groove;

[0019] 901. Center rod; 902. Threaded column; 903. Threaded seat; 904. Transmission bevel gear; 905. Drive bevel gear; 906. Rotating head. Detailed Implementation

[0020] like Figures 1 to 4As shown, this utility model relates to a four-blade, eight-edged modular high-speed stem-pulling roller, including a fixed head 1 and a rotating head 2. The top of the rotating head 2 is provided with a recessed cavity for placing bearings. A convex frame 3 is provided between adjacent sides of the fixed head 1 and the rotating head 2. A support module 4 is provided between two convex frames 3. Both the convex frame 3 and the support module 4 are hollow. The hollow design can reduce costs and lighten the weight of the device. Blade modules 5 are provided on all four sides of the outer periphery of the support module 4. Blade blades 6 protrude from both sides of the edge of the blade module 5. The multiple blade blades 6 are divided into long and short blades of different lengths. The size and position of the long and short blades are selected according to the situation. In order to connect the two straight-position blade blades 6, multiple bolt rods 7 are provided. The bolt rods 7 pass through the support module 4 or the convex frame 3 and are threaded with nuts 8. The multiple blade modules 5 are close to each other on adjacent sides and their ends are respectively tightly engaged with the fixed head 1 and the rotating head 2. Through the design of being tightly engaged with each other, when fixed, a mutual restraining force is generated between them, so that the modules are united as one, which can further improve the stability between the modules.

[0021] The working principle involves sequentially attaching multiple cutter modules 5 to the sides of the support module 4, then moving the fixing head 1 and rotating head 2 to make them fit tightly against the ends of the multiple cutter modules 5. A bolt rod 7 is then passed through two corresponding cutter modules 5 and the support module 4, and finally secured with a nut 8. This completes the connection. When one side of a cutter module 5 is damaged, only the corresponding bolt rod 7 needs to be removed for modular replacement, reducing maintenance costs.

[0022] The modules are connected only by bolts 7, which results in weak stability. To address this, and to further improve the stability between the modules, a fastening structure 9 is provided at the center of the support module 4 to tighten the components. The fastening structure 9 includes a central rod 901, a bushing on the outer periphery of the central rod 901, and an extension rod 10 fixed between the outer periphery of the bushing and the support module 4. A threaded post 902 is fixed to the outer periphery of the bottom end of the central rod 901, and a threaded seat 903 is threadedly connected to the outer periphery of the threaded post 902. The threaded seat 903 is connected to the lower convex frame. 3. Fixed, the top of the center rod 901 is connected to the transmission bevel gear 904, the transmission bevel gear 904 meshes with the driving bevel gear 905, one end of the driving bevel gear 905 is connected to the rotating head 2 through the rotating head 906, the end side of the rotating head 906 is provided with a slot to facilitate the rotation of the tool, the lower half of the rotating head 2 is provided with a hollow part, the hollow part is used to accommodate the transmission bevel gear 904 and the driving bevel gear 905, the fixed head 1 and the rotating head 2 are provided with a groove 11 on the side near the support module 4, the groove 11 is engaged with the end of the support module 4.

[0023] The working principle is as follows: the tool is inserted into the slot and then rotated. The rotation of the rotating head 906 drives the active bevel gear 905 and the transmission bevel gear 904 to rotate, causing the central rod 901 to rotate. This causes the threaded column 902 to rotate and connect with the threaded seat 903, further connecting the convex frame 3 and the support module 4 into a whole, improving its stability. At the same time, during the threaded connection, the groove 11 engages with the end of the support module 4, constraining and fixing the tool body module 5, further improving its stability.

[0024] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A modular high-speed stem-pulling roller with four blades and eight edges, characterized in that, The device includes a fixed head (1) and a rotating head (2). A convex frame (3) is provided between adjacent sides of the fixed head (1) and the rotating head (2). A support module (4) is provided between the two convex frames (3). A blade module (5) is provided on all four sides of the outer periphery of the support module (4). A blade (6) protrudes from both sides of the edge of the blade module (5). Multiple bolt rods (7) are provided between the two blades (6) in a straight position. The bolt rods (7) pass through the support module (4) or the convex frame (3) and are threaded with nuts (8). A fastening structure (9) for tightening the components is provided at the center of the support module (4).

2. The modular high-speed stem-pulling roller with four blades and eight edges according to claim 1, characterized in that, The convex rectangular frame (3) and the support module (4) are both hollow designs. The multiple blade modules (5) are attached to each other on adjacent sides and their ends are respectively attached to the fixed head (1) and the rotating head (2).

3. The modular high-speed stem-pulling roller with four blades and eight edges according to claim 2, characterized in that, The fastening structure (9) includes a central rod (901), a threaded column (902) is fixed to the outer periphery of the bottom end of the central rod (901), a threaded seat (903) is threaded to the outer periphery of the threaded column (902), and the threaded seat (903) is fixed to the convex frame (3) located below.

4. The modular high-speed stem-pulling roller with four blades and eight edges according to claim 3, characterized in that, The center rod (901) is provided with a bushing on its outer periphery, and an extension rod (10) is fixed between the outer periphery of the bushing and the support module (4).

5. A modular high-speed stem-pulling roller with four blades and eight edges according to claim 4, characterized in that, The top end of the central rod (901) is connected to a transmission bevel gear (904), which meshes with a drive bevel gear (905). One end of the drive bevel gear (905) is connected to a rotating head (906) that passes through the rotating head (2).

6. The four-blade, eight-edged modular high-speed stem-pulling roller according to claim 5, characterized in that, The fixed head (1) and the rotating head (2) have grooves (11) on the side near the support module (4), and the grooves (11) engage with the end of the support module (4).

7. A modular high-speed stem-pulling roller with four blades and eight edges according to claim 1 or 6, characterized in that, The multiple blades (6) are divided into long and short blades of different lengths.

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