Straw smashing device for corn harvester
By installing a drive motor on the corn harvester to drive the rotating wheel and feeding hook, along with cutting blades and a conveyor belt, the problem of straw blockage is solved, achieving stable straw conveying and efficient shredding, improving the crushing effect and reducing the risk of equipment failure.
Patent Information
- Application Number
- CN202422917832.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-11-28
AI Technical Summary
Existing corn harvester straw crushing devices are prone to material transmission obstruction due to straw blockage during long-term operation, which affects the crushing effect and increases the risk of equipment failure and maintenance costs.
The first rotating wheel is driven by a drive motor, which works in conjunction with the first and second feeding hooks and cutting blades to achieve timely shredding and conveying of straw. The conveyor belt and recycling trough ensure stable straw transfer, and the separation component screens and re-shreds the straw that does not meet the standards.
It effectively avoids straw blockage, ensures stable straw conveying and chopping, improves crushing efficiency, reduces equipment failure risk, improves the quality and uniformity of straw processing, and reduces maintenance costs.
Smart Images

Figure CN223639761U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of straw crushing technology, and in particular to a straw crushing device for a corn harvester. Background Technology
[0002] The straw crushing device used in corn harvesters can quickly crush the straw during corn harvesting. It effectively reduces the volume of straw, making it easier to return to the field, increasing soil fertility, and preventing fire hazards caused by indiscriminate straw piling. This is beneficial to the environment, improves the field working environment, creates favorable conditions for the next crop planting, and improves the overall efficiency of agricultural production.
[0003] However, in practical use, it has been found that existing straw crushing devices for corn harvesters are prone to blockage due to the accumulation of large amounts of straw waste in their pipes during long-term operation. Once blockage occurs, material transmission is hindered, preventing subsequent straw from smoothly entering the crushing area. This makes it difficult to maintain efficient and continuous crushing operations, reducing crushing effectiveness and increasing the risk of equipment failure and maintenance costs. This application provides a straw crushing device for corn harvesters to meet this need. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a straw crushing device for corn harvesters.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a straw crushing device for a corn harvester, comprising a shovel box, wherein a conveying component is provided on one side of the shovel box;
[0006] The conveying assembly includes a conveying box, inside which is a first rotating wheel. A drive motor is installed at one end of the first rotating wheel. First feeding hooks are evenly arranged on the first rotating wheel. A drive shaft is installed on the side of the conveying box away from the first rotating wheel. A second rotating wheel is installed on the drive shaft. Second feeding hooks are installed on both sides of the second rotating wheel. Cutting blades are installed on both sides of the second rotating wheel away from the second feeding hooks.
[0007] In a preferred embodiment, a conveyor belt is provided at the bottom of the conveyor box, feeding baffles are evenly arranged on the conveyor belt, and recycling slots are provided on both sides of the conveyor box.
[0008] The technical effects of adopting the above technical solution are as follows: the conveyor belt can be used for feeding, and the feeding baffle can effectively prevent the straw from slipping, ensuring that the straw is stably moved forward with the conveyor belt. Through the recycling slots on both sides, the straw separated by the separation component can be crushed again.
[0009] In a preferred embodiment, the cutting assembly includes a dust baffle plate, a rotating shaft is provided at the bottom of the dust baffle plate, a reciprocating motor is provided on one side of the rotating shaft, and shovel teeth are provided on the rotating shaft, with cutting teeth provided between the shovel teeth.
[0010] The technical effect of adopting the above technical solution is as follows: the reciprocating motor serves as the power source, driving the rotating shaft to rotate. The shovel teeth on the rotating shaft can perform preliminary shoveling and gathering of the straw, making the straw easier to process later, while the cutting teeth between the shovel teeth can effectively cut the gathered straw, breaking it into suitable small pieces.
[0011] In a preferred embodiment, a separation component is provided on the top of the conveying component. The separation component includes a support plate, each of which is provided with a discharge chute. Separation plates are provided on both sides of the inner side of the support plate.
[0012] The technical effects of adopting the above technical solution are as follows: the support plate provides support for the whole, the discharge chute can guide the crushed straw to be output in a specific direction, and the separation plates on both sides inside can separate the straw, screen out the larger straw products, and perform re-crushing operation.
[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0014] This invention, by setting up a drive motor, a first rotating wheel, a first feeding hook, a second rotating wheel, a drive shaft, and a second feeding hook, allows the drive motor to rotate the first rotating wheel, the first feeding hook to grab straw and convey it forward, and the second rotating wheel on the drive shaft, in conjunction with the second feeding hooks on both sides, to further convey the straw. Furthermore, the cutting blades on both sides of the second rotating wheel can shred the straw, ensuring that the straw is shredded in a timely manner and continuously pushed forward during the conveying process. This prevents the straw from clogging inside the equipment and solves the problems mentioned in the background art. Attached Figure Description
[0015] Figure 1 This utility model provides a structural schematic diagram of a straw crushing device for a corn harvester;
[0016] Figure 2 A schematic diagram of the conveying component of a straw crushing device for a corn harvester provided by this utility model;
[0017] Figure 3 A schematic diagram of the conveying component of a straw crushing device for a corn harvester provided by this utility model;
[0018] Figure 4 This utility model provides a structural schematic diagram of a cutting component for a straw crushing device used in a corn harvester.
[0019] Legend:
[0020] 1. Shovel box;
[0021] 2. Cutting assembly; 21. Dust baffle; 22. Reciprocating motor; 23. Rotating shaft; 24. Shovel teeth; 25. Cutting teeth;
[0022] 3. Crushing wheel; 4. Feed groove;
[0023] 5. Conveying assembly; 51. Conveying box; 52. Drive motor; 53. First rotating wheel; 54. First feeding hook; 55. Second rotating wheel; 56. Drive shaft; 57. Second feeding hook; 58. Cutting blade; 59. Conveyor belt; 510. Feeding baffle; 511. Recycling slot;
[0024] 6. Conveying assembly; 61. Recycling bin; 62. Feeding rollers;
[0025] 7. Separation component; 71. Support plate; 72. Discharge chute; 73. Separation plate. Detailed Implementation
[0026] 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.
[0027] like Figure 1 - Figure 4 As shown, this embodiment provides a technical solution: a straw crushing device for a corn harvester, including a shovel box 1, and a conveying component 5 is provided on one side of the shovel box 1;
[0028] The conveying assembly 5 includes a conveyor box 51. Inside the conveyor box 51 is a first rotating wheel 53. A drive motor 52 is mounted on one end of the first rotating wheel 53. First feeding hooks 54 are evenly distributed on the first rotating wheel 53. A drive shaft 56 is located on the side of the conveyor box 51 away from the first rotating wheel 53. A second rotating wheel 55 is mounted on the drive shaft 56. Second feeding hooks 57 are located on both sides of the second rotating wheel 55. Cutting blades 58 are located on both sides of the second rotating wheel 55 away from the second feeding hooks 57. A conveyor belt 59 is located at the bottom of the conveyor box 51. Feeding baffles 510 are evenly distributed on the conveyor belt 59. Recycling slots 51 are opened on both sides of the conveyor box 51. 1. The drive motor 52 drives the first rotating wheel 53 to rotate. The first feeding hook 54 can grab the straw and convey it forward. The second rotating wheel 55 on the drive shaft 56, together with the second feeding hooks 57 on both sides, further conveys the straw. The cutting blades 58 on both sides of the second rotating wheel 55 can chop the straw, so that the straw is chopped in time and continuously pushed forward during the conveying process, thereby avoiding the straw from forming a blockage inside the equipment. The feeding operation can be carried out through the conveyor belt 59. The feeding baffle 510 can effectively prevent the straw from slipping and ensure that the straw is stably moved forward with the conveyor belt 59. Through the recycling slots 511 on both sides, the straw separated by the separation component 7 can be re-crushed.
[0029] Going a step further, such as Figure 1 - Figure 4 As shown: The cutting component 2 includes a dust baffle 21, a rotating shaft 23 at the bottom of the dust baffle 21, a reciprocating motor 22 on one side of the rotating shaft 23, shovel teeth 24 on each rotating shaft 23, and cutting teeth 25 between each shovel tooth 24. The reciprocating motor 22 serves as a power source to drive the rotating shaft 23 to rotate. The shovel teeth 24 on the rotating shaft 23 can perform preliminary shoveling and gathering of the straw, making the straw easier to process later. The cutting teeth 25 between the shovel teeth 24 can effectively cut the gathered straw, breaking it into suitable small segments. The shovel box 1 is equipped with a crushing wheel 3 inside. A feeding slot 4 is opened on the side of the shovel box 1 near the conveying component 5. The cutting component 2 is located on the side of the shovel box 1 away from the feeding slot 4. After preliminary cutting by the crushing wheel 3, the straw can be fed into the feeding slot 4 on the side of the shovel box 1 near the conveying component 5, thus feeding the material into the conveying component 5 and improving processing efficiency.
[0030] To solve the problem of incomplete straw crushing, such as Figure 1 - Figure 2As shown: In this scheme, a separation component 7 is provided on the top of the conveying component 5. The separation component 7 includes a support plate 71, and each support plate 71 is provided with a discharge chute 72. Separation plates 73 are provided on both sides of the inside of the support plate 71. The support plate 71 provides support for the whole, the discharge chute 72 can guide the crushed straw to be output in a specific direction, and the separation plates 73 on both sides of its inside can separate the straw, screen out the larger straw products, and perform a re-crushing operation. Then, the larger straw is sent into the recycling box 61 by the conveying component 6. The straw can be sent back into the conveying box 51 through the recycling slot 511 by the feeding roller 62 for re-crushing.
[0031] Working principle:
[0032] like Figure 1 - Figure 4 As shown:
[0033] In use: the drive motor 52 drives the first rotating wheel 53 to rotate, the first feeding hook 54 grabs the straw and conveys it forward, the second rotating wheel 55 on the drive shaft 56 and the second feeding hooks 57 on both sides take over, the cutting blade 58 cuts the straw. This process allows the straw to be conveyed and cut at the same time to avoid equipment blockage. The conveyor belt 59 cooperates with the feeding baffle 510 to ensure stable transfer of straw. The recycling slot 511 provides a path for the re-crushing of the separated straw.
[0034] Inside the shovel box 1, the cutting assembly 2 is driven by a reciprocating motor 22 to rotate the shaft 23. The shovel teeth 24 shovel and gather the straw. During use, the dust baffle 21 can block the fine dust generated during cutting. The cutting teeth 25 crush the straw into small pieces. Then, the crushing wheel 3 performs preliminary cutting. The straw can be fed into the feeding slot 4 located on the side of the shovel box 1 near the conveying assembly 5 to send the material into the conveying assembly 5, thereby improving processing efficiency.
[0035] In the separation component 7, the support plate 71 provides support, the discharge chute 72 guides the direction of straw output, and the separation plate 73 screens larger straw products, causing them to enter the recycling box 61 located in the conveying component 6. The feeding roller 62 sends the straw in the recycling box 61 back to the conveying box 51 for re-crushing through the recycling slot 511, realizing the recycling treatment of straw that does not meet the crushing standard, ensuring that the final output straw meets the requirements, improving the quality and uniformity of straw crushing, reducing material waste, and at the same time, the various components cooperate with each other to maintain the smooth flow of materials inside the equipment, effectively improving the working efficiency and stability of the entire corn harvester straw crushing device, and providing reliable technical support for the straw processing link in agricultural production.
[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A straw crushing device for a corn harvester, comprising a shovel box (1), characterized in that, A conveying assembly (5) is provided on one side of the shovel box (1); The conveying assembly (5) includes a conveying box (51), inside which a first rotating wheel (53) is provided. A drive motor (52) is provided at one end of the first rotating wheel (53). A first feeding hook (54) is evenly provided on the first rotating wheel (53). A drive shaft (56) is provided on the side of the conveying box (51) away from the first rotating wheel (53). A second rotating wheel (55) is provided on the drive shaft (56). A second feeding hook (57) is provided on both sides of the second rotating wheel (55). A cutting blade (58) is provided on both sides of the second rotating wheel (55) away from the second feeding hook (57).
2. The straw crushing device for a corn harvester according to claim 1, characterized in that, The bottom of the conveyor box (51) is provided with a conveyor belt (59), and feeding baffles (510) are evenly arranged on the conveyor belt (59). Recycling slots (511) are opened on both sides of the conveyor box (51).
3. The straw crushing device for a corn harvester according to claim 1, characterized in that, The conveying component (5) is provided with conveying components (6) on both sides. The conveying component (6) includes a recycling bin (61), and the bottom of the recycling bin (61) is provided with a feeding roller (62).
4. The straw crushing device for a corn harvester according to claim 1, characterized in that, The top of the conveying component (5) is provided with a separation component (7), which includes a support plate (71), a discharge chute (72) on each of the support plates (71), and separation plates (73) on both sides inside the support plate (71).
5. The straw crushing device for a corn harvester according to claim 1, characterized in that, The shovel box (1) is equipped with a crushing wheel (3) inside. The shovel box (1) is provided with a feeding slot (4) on the side near the conveying component (5). The shovel box (1) is provided with a cutting component (2) on the side away from the feeding slot (4).
6. The straw crushing device for a corn harvester according to claim 5, characterized in that, The cutting assembly (2) includes a dust baffle (21), a rotating shaft (23) is provided at the bottom of the dust baffle (21), a reciprocating motor (22) is provided on one side of the rotating shaft (23), and shovel teeth (24) are provided on the rotating shaft (23), and cutting teeth (25) are provided between the shovel teeth (24).