Efficient blade structure of straw smashing device
By introducing an anti-tangling component into the straw crushing device, and utilizing the cooperation of a drive motor and a bidirectional lead screw, the tangled straw can be cut, thus solving the straw tangling problem and improving the ease of use and safety of the device.
Patent Information
- Application Number
- CN202520414332.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-11
AI Technical Summary
In existing straw crushing devices, straw easily gets tangled on the blade structure, affecting the crushing effect. Furthermore, prolonged tangling shortens the device's lifespan, increases the cleaning burden on workers, and poses safety hazards.
A high-efficiency blade structure including an anti-tangle component was designed. The drive motor drives the bidirectional lead screw, which moves the ejector block and the arc-shaped limiting plate to achieve the anti-tangle cutting blade to cut the tangled straw, separate the straw from the rotating rod, and improve the ease of use.
It effectively prevents straw entanglement, improves the ease of use and safety of the device, reduces the burden of manual cleaning, and extends the service life of the device.
Smart Images

Figure CN223816552U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of straw crushing and recycling technology, and in particular to a high-efficiency blade structure for a straw crushing device. Background Technology
[0002] Straw is a major byproduct of agriculture and an important biological resource for industry and agriculture. Straw can be directly returned to the field as fertilizer, or used for papermaking, animal feed, and extracting plant fiber. Currently, with the increasing yield of crops and grains in my country, the resulting surplus of straw and other byproducts urgently needs secondary processing.
[0003] In existing straw crushing devices, straw easily gets tangled on the rotating rod and blade structure during use, affecting the crushing effect. Prolonged tangling can also shorten the device's lifespan. Furthermore, manual cleaning of the tangled straw is required, increasing workload. Additionally, workers are easily injured if not careful. Therefore, a more efficient blade structure for straw crushing devices is needed to solve these problems. Utility Model Content
[0004] The main objective of this invention is to provide a high-efficiency blade structure for a straw crushing device, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A high-efficiency blade structure for a straw crushing device includes a crushing blade assembly, the crushing blade assembly includes a rotating rod, the outer wall of the rotating rod is provided with crushing blades, one end of the rotating rod is provided with a transition seat, the interior of the rotating rod is provided with a cavity, and the middle of the cavity is provided with an anti-winding component;
[0007] The anti-winding assembly includes a mounting plate, a drive motor is provided on the top of the mounting plate, and a bidirectional lead screw is provided on the bottom of the mounting plate. An ejector block is provided on the outside of the bidirectional lead screw, and an arc-shaped limiting plate is provided at the bottom of the ejector block. An anti-winding cutting blade is provided on the side of the arc-shaped limiting plate, and a support slide rod is provided on the adjacent side of the anti-winding cutting blade. A support spring is provided on the outside of the support slide rod.
[0008] Preferably, a shredding blade is installed on the outer wall of the rotating rod, and there are multiple shredding blades, which are evenly distributed on the outer wall of the rotating rod. Four shredding blades form a group. An adapter seat is installed at one end of the rotating rod, and a cavity is opened in the middle of the rotating rod.
[0009] Preferably, a mounting plate is bolted to the inside of the rotating rod, and the mounting plate is located at one end of the rotating rod. A drive motor is bolted to the top of the mounting plate, and the drive motor is located in the middle of the top of the mounting plate. The output end of the drive motor is connected to a bidirectional lead screw, and the end of the bidirectional lead screw near the drive motor is connected to the mounting plate through a bearing.
[0010] Preferably, there are two mounting plates, which are symmetrically distributed at both ends of the rotating rod. The end of the bidirectional lead screw away from the drive motor is connected to the other mounting plate through a bearing. An ejector block is sleeved on the outer wall of the bidirectional lead screw, and an arc-shaped guide surface is opened on the side of the ejector block near the arc-shaped limiting plate. There are two ejector blocks, which are symmetrically distributed on the outer walls of both ends of the bidirectional lead screw, and the ejector blocks are correspondingly arranged with the arc-shaped guide surface.
[0011] Preferably, an arc-shaped limiting plate is provided on the side of the ejector block away from the mounting plate, and the arc-shaped limiting plate is slidably connected inside the cavity. There are four arc-shaped limiting plates, which are symmetrically distributed inside the cavity. An anti-winding cutting blade is fixedly connected to the side of the arc-shaped limiting plate near the rotating rod. The anti-winding cutting blade is correspondingly set with the arc-shaped limiting plate.
[0012] Preferably, a shrinkage groove is formed in the middle of the side wall of the rotating rod, and the anti-winding cutting blade is slidably connected inside the shrinkage groove. A support slide rod is installed on the adjacent side of the anti-winding cutting blade, and the support slide rod is fixedly connected to the arc-shaped limiting plate. There are four support slide rods, which are symmetrically distributed at both ends of the arc-shaped limiting plate. A support spring is sleeved on the outer wall of the support slide rod. The two ends of the support spring are fixedly connected to the side of the arc-shaped limiting plate and the inner wall of the rotating rod, respectively. A sliding groove is formed on the side wall of the rotating rod, and the sliding groove is arranged adjacent to the shrinkage groove. The support slide rod is slidably connected inside the sliding groove.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] In this invention, a drive motor drives a bidirectional lead screw to rotate, causing two ejector blocks to move in opposite directions. This allows the ejector blocks to eject the arc-shaped limiting plate and the anti-tangle cutting blade. During the ejection process, the anti-tangle cutting blade cuts the straw wrapped around the rotating rod, thus facilitating the separation of the straw from the rotating rod and improving the ease of use of the device. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;
[0016] Figure 2 This is a top view of the device of this utility model;
[0017] Figure 3 This is a structural schematic diagram of the anti-winding component of this utility model;
[0018] Figure 4 This is a schematic diagram of the bottom structure of the ejector block of this utility model.
[0019] In the diagram: 1. Crusher assembly; 2. Rotating rod; 3. Crusher blade; 4. Adapter seat; 5. Cavity; 6. Anti-winding component; 7. Mounting plate; 8. Drive motor; 9. Two-way lead screw; 10. Ejector block; 11. Arc-shaped guide surface; 12. Arc-shaped limiting plate; 13. Anti-winding cutting blade; 14. Shrinkage groove; 15. Support slide rod; 16. Support spring; 17. Sliding groove. Detailed Implementation
[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0021] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a high-efficiency blade structure for a straw crushing device includes a crushing blade assembly 1.
[0022] The shredder assembly 1 includes a rotating rod 2, shredder blades 3 are provided on the outer wall of the rotating rod 2, and an adapter 4 is provided at one end of the rotating rod 2. A cavity 5 is provided inside the rotating rod 2, and an anti-winding component 6 is provided in the middle of the cavity 5. Shredder blades 3 are installed on the outer wall of the rotating rod 2, and there are multiple shredder blades 3, which are evenly distributed on the outer wall of the rotating rod 2. Four shredder blades 3 form a group. An adapter 4 is installed at one end of the rotating rod 2, and a cavity 5 is opened in the middle of the rotating rod 2.
[0023] The anti-winding assembly 6 includes a mounting plate 7. A drive motor 8 is mounted on the top of the mounting plate 7, and a bidirectional lead screw 9 is mounted on the bottom of the mounting plate 7. An ejector block 10 is mounted outside the bidirectional lead screw 9, and an arc-shaped limiting plate 12 is mounted at the bottom of the ejector block 10. An anti-winding cutting blade 13 is mounted on the side of the arc-shaped limiting plate 12, and a support slide rod 15 is mounted on the adjacent side of the anti-winding cutting blade 13. A support spring 16 is mounted outside the support slide rod 15. The mounting plate 7 is bolted to the inside of the rotating rod 2, and the mounting plate 7 is located at one end of the rotating rod 2. The drive motor 8 is bolted to the top of the mounting plate 7. 8 is located at the top center of the mounting plate 7. The output end of the drive motor 8 is connected to a bidirectional lead screw 9. The end of the bidirectional lead screw 9 near the drive motor 8 is connected to the mounting plate 7 through a bearing. There are two mounting plates 7, which are symmetrically distributed at both ends of the rotating rod 2. The end of the bidirectional lead screw 9 away from the drive motor 8 is connected to another mounting plate 7 through a bearing. An ejector block 10 is sleeved on the outer wall of the bidirectional lead screw 9. An arc-shaped guide surface 11 is opened on the side of the ejector block 10 near the arc-shaped limiting plate 12. There are two ejector blocks 10, which are symmetrically distributed on the outer walls of both ends of the bidirectional lead screw 9. The ejector blocks 10 and the arc-shaped guide surface 11 are correspondingly set.
[0024] An arc-shaped limiting plate 12 is provided on the side of the ejector block 10 away from the mounting plate 7, and the arc-shaped limiting plate 12 is slidably connected to the inside of the cavity 5. There are four arc-shaped limiting plates 12, which are symmetrically distributed inside the cavity 5. An anti-winding cutting blade 13 is fixedly connected to the side of the arc-shaped limiting plate 12 near the rotating rod 2. The anti-winding cutting blade 13 is correspondingly arranged with the arc-shaped limiting plate 12. A shrinkage groove 14 is opened in the middle of the side wall of the rotating rod 2, and the anti-winding cutting blade 13 is slidably connected to the inside of the shrinkage groove 14. A support slide rod 15 is installed on the adjacent side of the anti-winding cutting blade 13, and the support slide rod 15 is fixedly connected to the arc-shaped limiting plate 12. There are four support slide rods 15, which are symmetrically distributed at both ends of the arc-shaped limiting plate 12, and the support slide rod 15 is fixedly connected to the arc-shaped limiting plate 12. A support spring 16 is fitted on the outer wall of the slide rod 15. The two ends of the support spring 16 are fixedly connected to the side of the arc-shaped limiting plate 12 and the inner wall of the rotating rod 2, respectively. A sliding groove 17 is opened on the side wall of the rotating rod 2, and the sliding groove 17 is arranged adjacent to the shrinking groove 14. The support slide rod 15 is slidably connected inside the sliding groove 17. The drive motor 8 drives the bidirectional lead screw 9 to rotate, causing the two ejector blocks 10 to move in opposite directions. This allows the ejector blocks 10 to eject the arc-shaped limiting plate 12 and the anti-tangle cutting blade 13. During the ejection process, the anti-tangle cutting blade 13 cuts the straw wrapped around the rotating rod 2, thereby facilitating the separation of the straw from the rotating rod 2 and improving the ease of use of the device.
[0025] It should be noted that this utility model is a high-efficiency blade structure for a straw crushing device. In use, the rotating rod 2 is installed inside the crusher via an adapter 4. A drive device drives the adapter 4 and rotating rod 2 to rotate, which in turn drives multiple sets of crushing blades 3 to rotate, thus crushing the straw. When the straw is wrapped around the rotating rod 2, a drive motor 8 drives a bidirectional lead screw 9 to rotate, causing two ejector blocks 10 to move in opposite directions. The arc-shaped guide surface 11 on one side of the ejector block 10 slides along one end of the arc-shaped limiting plate 12, allowing the ejector block 10 to move relative to the arc-shaped limiting plate 12. As the rotating rod 2 is ejected, the arc-shaped limiting plate 12 moves towards the inner wall of the rotating rod 2, thus ejecting the anti-tangle cutting blade 13. The anti-tangle cutting blade 13 extends inside the shrinkage groove 14, cutting the straw wrapped around the outer wall of the rotating rod 2. At the same time, a support slide rod 15 is fixedly connected to the side of the arc-shaped limiting plate 12 near the anti-tangle cutting blade 13. The support slide rod 15 is slidably connected inside the sliding groove 17, thereby improving the stability of the arc-shaped limiting plate 12 and the anti-tangle cutting blade 13. The arc-shaped limiting plate 12 and the rotating rod 2 are limited by the support spring 16, improving the practicality of the device.
[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A high-efficiency blade structure for a straw crushing device, comprising a crushing blade assembly (1), characterized in that: The shredder assembly (1) includes a rotating rod (2), a shredder blade (3) is provided on the outer wall of the rotating rod (2), and a transition seat (4) is provided at one end of the rotating rod (2). A cavity (5) is provided inside the rotating rod (2), and an anti-winding component (6) is provided in the middle of the cavity (5). The anti-winding assembly (6) includes a mounting plate (7), a drive motor (8) is provided on the top of the mounting plate (7), and a bidirectional lead screw (9) is provided on the bottom of the mounting plate (7). An ejector block (10) is provided on the outside of the bidirectional lead screw (9), and an arc-shaped limiting plate (12) is provided on the bottom of the ejector block (10). An anti-winding cutter (13) is provided on the side of the arc-shaped limiting plate (12), and a support slide rod (15) is provided on the adjacent side of the anti-winding cutter (13). A support spring (16) is provided on the outside of the support slide rod (15).
2. The high-efficiency blade structure of the straw crushing device according to claim 1, characterized in that: The outer wall of the rotating rod (2) is equipped with crushing blades (3), and there are multiple crushing blades (3) evenly distributed on the outer wall of the rotating rod (2). Four crushing blades (3) form a group. One end of the rotating rod (2) is equipped with an adapter (4), and a cavity (5) is opened in the middle of the rotating rod (2).
3. The high-efficiency blade structure of the straw crushing device according to claim 1, characterized in that: An mounting plate (7) is bolted to the inside of the rotating rod (2), and the mounting plate (7) is located at one end of the rotating rod (2). A drive motor (8) is bolted to the top of the mounting plate (7), and the drive motor (8) is located in the middle of the top of the mounting plate (7). The output end of the drive motor (8) is connected to a bidirectional lead screw (9), and the end of the bidirectional lead screw (9) near the drive motor (8) is connected to the mounting plate (7) through a bearing.
4. The high-efficiency blade structure of the straw crushing device according to claim 3, characterized in that: There are two mounting plates (7), which are symmetrically distributed at both ends of the rotating rod (2). The end of the bidirectional screw (9) away from the drive motor (8) is connected to another mounting plate (7) through a bearing. An ejector block (10) is sleeved on the outer wall of the bidirectional screw (9), and an arc-shaped guide surface (11) is opened on the side of the ejector block (10) near the arc-shaped limiting plate (12). There are two ejector blocks (10), which are symmetrically distributed on the outer walls of both ends of the bidirectional screw (9), and the ejector block (10) and the arc-shaped guide surface (11) are correspondingly arranged.
5. The high-efficiency blade structure of the straw crushing device according to claim 4, characterized in that: An arc-shaped limiting plate (12) is provided on the side of the ejector block (10) away from the mounting plate (7), and the arc-shaped limiting plate (12) is slidably connected inside the cavity (5). There are four arc-shaped limiting plates (12), which are symmetrically distributed inside the cavity (5). An anti-winding cutting blade (13) is fixedly connected on the side of the arc-shaped limiting plate (12) near the rotating rod (2). The anti-winding cutting blade (13) is correspondingly set with the arc-shaped limiting plate (12).
6. The high-efficiency blade structure of the straw crushing device according to claim 5, characterized in that: A shrinkage groove (14) is provided in the middle of the side wall of the rotating rod (2), and the anti-winding cutting blade (13) is slidably connected inside the shrinkage groove (14). A support slide rod (15) is installed on the adjacent side of the anti-winding cutting blade (13), and the support slide rod (15) is fixedly connected to the arc-shaped limiting plate (12). There are four support slide rods (15), which are symmetrically distributed at both ends of the arc-shaped limiting plate (12). A support spring (16) is sleeved on the outer wall of the support slide rod (15). The two ends of the support spring (16) are fixedly connected to the side of the arc-shaped limiting plate (12) and the inner wall of the rotating rod (2). A sliding groove (17) is provided on the side wall of the rotating rod (2), and the sliding groove (17) is arranged adjacent to the shrinkage groove (14). The support slide rod (15) is slidably connected inside the sliding groove (17).