Air seeding machine with double skeleton beam structure

Abstract

The utility model discloses a kind of air suction type seeders of double skeleton beam structure, including upper skeleton beam, the bottom fixed connection of upper skeleton beam has lower skeleton beam.The utility model is fixedly connected using upper skeleton beam and lower skeleton beam, can significantly enhance the stability and carrying capacity of overall structure, adapt to complex working condition in sowing operation.Storage cylinder is connected with upper skeleton beam by fixed block, guide rod, compression spring and the like structure, when vibration is generated in equipment operation, storage cylinder can be up and down micro-motion, cooperate the transmission of connecting rod, sliding block, rack and pinion, drive knocking frame to knock storage cylinder, effectively avoid that seed is jammed in storage cylinder, simultaneously, hose connection storage cylinder and air suction seed mechanism, can adapt to the micro-motion of storage cylinder, ensure that unloading passage is unobstructed, improve the continuity and reliability of sowing, the device has the advantages of good unloading anti-blocking effect and convenient to use.

Description

Technical Field

[0001] This utility model relates to the technical field of air-suction seeders, specifically an air-suction seeder with a double-frame beam structure. Background Technology

[0002] With the continuous improvement of agricultural mechanization, pneumatic seeders, with their advantages of high seed metering accuracy, wide crop adaptability, and high operating efficiency, have been widely used in large-scale sowing operations for various crops such as wheat, corn, and soybeans. To ensure stable operation of the equipment under complex field conditions, pneumatic seeders typically use a frame beam structure as the core load-bearing foundation, which is used to install key components such as the material storage cylinder, pneumatic seed metering mechanism, support and walking mechanism, and soil burying mechanism. Its structural stability and functionality directly determine the quality and efficiency of the sowing operation. However, existing air-suction seeders still have many technical shortcomings in practical applications, making it difficult to meet the needs of modern agriculture for efficient and stable seeding: I. Insufficient load-bearing capacity and stability of the frame beam: Traditional air-suction seeders mostly use a single frame beam structure. When the equipment is equipped with multiple sets of storage cylinders and matching air-suction devices, the load on the single frame beam is concentrated. Long-term operation under bumpy conditions and heavy loads in the field can easily lead to problems such as beam bending and deformation. Deformation of the frame beam will cause the installation positions of various components to shift, and the relative positions of the air-suction seed metering mechanism and the storage cylinder to become misaligned. This will lead to obstructed seed metering channels, reduced seed metering accuracy, and even missed or double seeding, seriously affecting the seeding quality. Second, the problem of clogging in the storage cylinder is prominent. Most existing storage cylinders are fixed installation structures, rigidly connected to the frame beam. When the seeder is operating, the high-frequency vibration caused by uneven field roads will cause the seeds in the storage cylinder to be squeezed and clump together. Especially in the inner wall and bottom area of ​​the storage cylinder, the seeds are prone to forming an accumulation layer. Once a blockage occurs, the machine must be stopped for manual cleaning, which not only interrupts the operation process and reduces the sowing efficiency, but may also damage the seeds or parts during the cleaning process, increasing the operating cost. Therefore, developing a pneumatic seeder with a high-strength load-bearing structure and efficient anti-clogging function has become an urgent technical problem to be solved in the field of agricultural machinery. Utility Model Content

[0003] To address the problems mentioned in the background art, the purpose of this utility model is to provide a pneumatic seeder with a double-frame beam structure, which has the advantages of good material feeding and anti-clogging effect and ease of use.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pneumatic seeder with a double-frame beam structure, comprising an upper frame beam, a lower frame beam fixedly connected to the bottom of the upper frame beam, four storage cylinders evenly distributed along the front-back direction inside the upper frame beam, and a pneumatic seed dispensing mechanism below each storage cylinder, the bottom of the storage cylinder being connected to the pneumatic seed dispensing mechanism via a flexible hose, the pneumatic seed dispensing mechanism being fixedly connected to the lower frame beam via a bracket, a supporting walking mechanism and a soil burying mechanism being respectively provided below the lower frame beam, multiple fixed blocks evenly distributed in a ring being fixedly connected to the surface of the storage cylinder, a groove being provided at the bottom of each fixed block, and a rubber damping ring being fixedly connected inside the groove, a guide rod being slidably connected up and down inside the fixed block, the bottom of the guide rod being connected to... The upper frame beam is fixedly connected. A compression spring is sleeved on the surface of the guide rod. The top end of the compression spring is fixedly connected to the bottom of the rubber damping ring, and the bottom end of the compression spring is fixedly connected to the top of the upper frame beam. Connecting rods are hinged to both sides of the storage cylinder. Sliding grooves are provided on both sides of the top of the upper frame beam, and sliders are slidably connected to the inside of the sliding grooves. The end of the connecting rod away from the storage cylinder is hinged to the top of the slider. A first rack is fixedly connected to the front and rear sides of the slider. Movable grooves are provided on the top of the upper frame beam and on the front and rear sides of the slider, and a second rack is slidably connected to the inside of the movable grooves. Gears are rotatably connected to the top of the upper frame beam and on the front and rear sides of the slider. The gears mesh with the first rack and the second rack respectively. A striking frame is fixedly connected to the end of the second rack near the storage cylinder.

[0005] In a preferred embodiment of this utility model, a cover plate is fixedly connected to the top of the storage cylinder by bolts, a rotating shaft is rotatably connected inside the cover plate, a motor is fixedly connected to the top of the cover plate, the output end of the motor is fixedly connected to the rotating shaft, the bottom of the rotating shaft extends into the interior of the storage cylinder, a scraper is fixedly connected to the lower surface of the rotating shaft, and the bottom of the scraper is in contact with the bottom of the inner wall of the storage cylinder.

[0006] As a preferred embodiment of this invention, a spiral conveying blade is fixedly connected to the surface of the rotating shaft, and the spiral conveying blade is located above the scraper.

[0007] As a preferred embodiment of this invention, a stirring frame is fixedly connected to the surface of the rotating shaft, and the stirring frame is located above the spiral conveying blades.

[0008] As a preferred embodiment of this utility model, the surface of the compression spring is provided with an anti-rust coating, a bearing is fixedly connected inside the cover plate, the outer ring of the bearing is fixedly connected to the cover plate, and the inner ring of the bearing is fixedly connected to the rotating shaft.

[0009] As a preferred embodiment of this utility model, the inner wall of the storage cylinder is smooth, the top of the cover plate is connected to a feed pipe, and the top of the feed pipe is threadedly connected to a sealing cap.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model adopts a fixed connection between the upper and lower frame beams, which significantly enhances the stability and load-bearing capacity of the overall structure, adapting to complex working conditions in sowing operations. The storage cylinder is connected to the upper frame beam through a fixed block, guide rod, compression spring, and other structures. When the equipment vibrates during operation, the storage cylinder can move slightly up and down. In conjunction with the transmission of connecting rods, sliders, racks, and gears, it drives the striking frame to strike the storage cylinder, effectively preventing seeds from clogging inside the storage cylinder. At the same time, the flexible hose connects the storage cylinder to the air suction seed dispensing mechanism, which can adapt to the slight movement of the storage cylinder, ensuring unobstructed material dispensing and improving the continuity and reliability of sowing. The overall structural design is reasonable and easy to adapt to different working environments. This device has the advantages of good material dispensing anti-clogging effect and ease of use.

[0011] 2. This utility model uses bolts to fix the top cover of the storage cylinder, which facilitates easy opening for maintenance and cleaning of the inside of the storage cylinder. The motor drives the rotating shaft and scraper to rotate, and the scraper fits against the bottom of the inner wall of the storage cylinder, which can promptly scrape away the seeds deposited at the bottom, preventing the seeds from clumping and clogging the discharge port due to long-term static storage. This design ensures that the seeds enter the air suction seed dispensing mechanism smoothly, improves the uniformity of seed dispensing, reduces missed sowing caused by blockage, and improves the sowing quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front sectional view of the storage cylinder structure of this utility model; Figure 3 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This utility model Figure 1 Enlarged schematic diagram of the structure at point B.

[0013] In the diagram: 1. Upper frame beam; 2. Lower frame beam; 3. Storage cylinder; 4. Air suction seed dispensing mechanism; 5. Support walking mechanism; 6. Soil burying mechanism; 7. Fixing block; 8. Guide rod; 9. Compression spring; 10. Connecting rod; 11. Sliding block; 12. First rack; 13. Second rack; 14. Gear; 15. Striking frame; 16. Cover plate; 17. Rotating shaft; 18. Motor; 19. Scraper frame; 20. Spiral conveyor blades; 21. Mixing frame. 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.

[0015] like Figures 1 to 4As shown, a pneumatic seeder with a double-frame beam structure includes an upper frame beam 1, with a lower frame beam 2 fixedly connected to the bottom of the upper frame beam 1. The upper frame beam 1 has four storage cylinders 3 evenly distributed along the front-back direction inside, and each storage cylinder 3 has a pneumatic seed dispensing mechanism 4 below it. The bottom of the storage cylinder 3 is connected to the pneumatic seed dispensing mechanism 4 via a flexible hose. The pneumatic seed dispensing mechanism 4 is fixedly connected to the lower frame beam 2 via a bracket. A supporting walking mechanism 5 and a soil burying mechanism 6 are respectively arranged below the lower frame beam 2. Multiple fixed blocks 7 evenly distributed in a ring are fixedly connected to the surface of the storage cylinder 3. The bottom of each fixed block 7 has a groove, and a rubber damper is fixedly connected inside the groove. Inside the ring and fixed block 7, a guide rod 8 is slidably connected vertically. The bottom of the guide rod 8 is fixedly connected to the upper frame beam 1. A compression spring 9 is sleeved on the surface of the guide rod 8. The top of the compression spring 9 is fixedly connected to the bottom of the rubber damping ring, and the bottom of the compression spring 9 is fixedly connected to the top of the upper frame beam 1. Connecting rods 10 are hinged to both sides of the storage cylinder 3. Slide grooves are provided on both sides of the top of the upper frame beam 1, and sliders 11 are slidably connected to the inside of the slide grooves. The end of the connecting rod 10 away from the storage cylinder 3 is hinged to the top of the slider 11. First racks 12 are fixedly connected to the front and rear sides of the slider 11. Movable grooves are provided on the top of the upper frame beam 1 and on the front and rear sides of the slider 11. The upper frame beam 1 has a second rack 13 that slides left and right. Gears 14 are rotatably connected to the top of the upper frame beam 1, located in front of and behind the slider 11. Gears 14 mesh with the first rack 12 and the second rack 13 respectively. A striking frame 15 is fixedly connected to the end of the second rack 13 near the storage cylinder 3. The aforementioned air-suction seed metering mechanism 4 includes a fan, a suction pipe, an air-suction seed meterer, and a seed metering pipe. The aforementioned air-suction seed metering mechanism 4, the supporting walking mechanism 5, and the soil-burying mechanism 6 are all existing common technologies and are common knowledge to those skilled in the art; therefore, they will not be described in detail here. Standard parts used in this utility model can all be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. In addition, the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here. The contents not described in detail in this specification are the prior art known to those skilled in the art. This application will not describe them in detail. In actual use, a protective cover is provided on the top of the upper frame beam 1. The gear 14, the first rack 12 and the second rack 13 are all located inside the protective cover to prevent debris from adhering to the surface of the gear 14. The protective cover is common knowledge to those skilled in the art. This application will not describe it in detail. The protective cover is not shown.

[0016] refer to Figure 2The top of the storage cylinder 3 is fixedly connected to a cover plate 16 by bolts. The inside of the cover plate 16 is rotatably connected to a rotating shaft 17. The top of the cover plate 16 is fixedly connected to a motor 18. The output end of the motor 18 is fixedly connected to the rotating shaft 17. The bottom of the rotating shaft 17 extends into the inside of the storage cylinder 3. A scraper 19 is fixedly connected to the lower surface of the rotating shaft 17. The bottom of the scraper 19 is in contact with the bottom of the inner wall of the storage cylinder 3.

[0017] As a technical optimization of this utility model, the cover plate 16 at the top of the storage cylinder 3 is fixed with bolts, which facilitates opening and maintenance of the inside of the storage cylinder 3. The motor 18 drives the rotating shaft 17 and the scraper frame 19 to rotate. The scraper frame 19 is in contact with the bottom of the inner wall of the storage cylinder 3, which can scrape the seeds deposited at the bottom in time, preventing the seeds from clumping and accumulating due to long-term static storage, and avoiding blockage of the discharge port. This design ensures that the seeds can smoothly enter the air suction seed dispensing mechanism 4, improves the uniformity of seed dispensing, reduces missed sowing caused by blockage, and improves the sowing quality.

[0018] refer to Figure 2 A spiral conveying blade 20 is fixedly connected to the surface of the rotating shaft 17, and the spiral conveying blade 20 is located above the scraper frame 19.

[0019] As a technical optimization of this utility model, the spiral conveying blades 20 on the surface of the rotating shaft 17 are located above the scraper frame 19. When the rotating shaft 17 rotates, the spiral conveying blades 20 can turn over and convey the seeds in the middle and lower layers of the storage cylinder 3 downwards. The spiral conveying blades 20 cooperate with the scraper frame 19 to form a continuous conveying power from the upper layer to the lower layer, so that the seeds are evenly distributed in the storage cylinder 3 and continuously move to the bottom, reducing blockage caused by local accumulation, ensuring the continuity and stability of material feeding, and further improving the working efficiency of the air suction seed discharge mechanism 4.

[0020] refer to Figure 2 A stirring frame 21 is fixedly connected to the surface of the rotating shaft 17, and the stirring frame 21 is located above the spiral conveying blade 20.

[0021] As a technical optimization of this utility model, the stirring frame 21 on the surface of the rotating shaft 17 is located above the spiral conveying blades 20. During equipment operation, the stirring frame 21 rotates with the rotating shaft 17, which can fully stir the seeds in the upper layer of the storage cylinder 3, breaking up any possible clumps and keeping the seeds in a loose state. Loose seeds are more easily conveyed downwards by the spiral conveying blades 20, avoiding conveying obstruction caused by seed clumps and reducing the risk of blockage. At the same time, the stirring process allows the seeds to be more evenly distributed in the storage cylinder 3, providing a good foundation for subsequent spiral conveying and scraping operations, ensuring a smooth and efficient feeding process, and improving the working stability of the seeder.

[0022] refer to Figure 3The surface of the compression spring 9 is provided with an anti-rust coating. The cover plate 16 is fixedly connected to the bearing, and the outer ring of the bearing is fixedly connected to the cover plate 16, while the inner ring of the bearing is fixedly connected to the rotating shaft 17.

[0023] As a technical optimization of this utility model, the anti-rust coating on the surface of the compression spring 9 effectively isolates air and moisture, slows down the corrosion rate of the compression spring 9, extends its service life, reduces the failure of the buffer function of the storage cylinder 3 due to damage to the compression spring 9, and reduces the frequency and cost of equipment maintenance. The bearing inside the cover plate 16 makes the connection between the rotating shaft 17 and the cover plate 16 more stable, reduces the frictional resistance when the rotating shaft 17 rotates, makes the rotating shaft 17 rotate more smoothly, reduces the operating load of the motor 18, and extends the service life of the motor 18. These designs improve the durability of various components of the equipment, ensure the long-term stable operation of the seeder, and enhance the overall reliability of operation.

[0024] refer to Figure 2 The inner wall of the storage cylinder 3 is smooth, and the top of the cover plate 16 is connected to the feed pipe, and the top of the feed pipe is threaded with a sealing cap.

[0025] As a technical optimization of this utility model, the smooth inner wall of the storage cylinder 3 reduces friction and adhesion between the seeds and the inner wall, preventing seeds from accumulating on the cylinder wall, ensuring smooth seed falling, and reducing the risk of blockage. The feed pipe at the top of the cover plate 16 facilitates adding seeds to the storage cylinder 3, making operation convenient. The sealing cap at the top of the feed pipe effectively prevents external dust and debris from entering the storage cylinder 3, while also preventing rainwater seepage that could cause seeds to become damp and deteriorate, thus ensuring seed quality. This design not only improves the practicality of the storage cylinder 3 but also facilitates daily operation and maintenance, providing a guarantee for the smooth progress of sowing operations.

[0026] The working principle and usage process of this utility model are as follows: When using the device, after debugging, add seeds, open the sealing cover of the feed pipe, and slowly and evenly pour the seeds into the storage cylinder 3. After the seeds are added, tighten the sealing cover of the feed pipe to prevent dust from entering the storage cylinder 3 or seeds from spilling out of the feed pipe during the operation.

[0027] Then, the equipment is started. First, the motor 18 is turned on, which drives the rotating shaft 17 to rotate. The rotating shaft 17 synchronously drives the mixing frame 21, the spiral conveying blade 20, and the scraper frame 19 to rotate. The mixing frame 21 mixes the upper layer of seeds in the storage cylinder 3 to break up the seed clumps. The spiral conveying blade 20 conveys the middle and lower layers of seeds downwards. The scraper frame 19 adheres to the bottom of the inner wall of the storage cylinder 3 to scrape the deposited seeds, ensuring that the seeds continue to move towards the hose. Then, the air suction seed discharge mechanism 4 is turned on, which sucks in the seeds in the hose and discharges them in an orderly manner through negative pressure. A connecting mechanism is set on the left side of the upper frame beam 1. The connecting mechanism is connected to the external tractor through the connecting parts. The connecting mechanism is a common existing technology and will not be described in detail in this application. The tractor drives the whole machine to move smoothly along the working route. The soil burying mechanism 6 moves with the whole machine to bury the discharged seeds. During operation, the vibration generated by the equipment causes the storage cylinder 3 to move slightly up and down along the guide rod 8. The compression spring 9 acts as a buffer and shock absorber. The slight movement of the storage cylinder 3 causes the connecting rod 10 to swing. The connecting rod 10 pushes the slider 11 to slide in the groove. The slider 11 drives the first rack 12 to move. The first rack 12 meshes with the gear 14 to rotate. The gear 14 drives the second rack 13 to move. The second rack 13 drives the striking frame 15 to strike the storage cylinder 3, preventing seeds from clogging inside the storage cylinder 3. For example, when the storage cylinder 3 moves down due to vibration, the storage cylinder 3 drives the connecting rod 10 to move, which in turn drives the sliders 11 on both sides to move away from each other, which in turn drives the first rack 12 to move. Then, through the gear 14, it drives the second rack 13 to move. The second racks 13 on both sides move closer to each other. The second rack 13 drives the striking frame 15 to move. A hard rubber block is provided at the end of the striking frame 15 near the storage cylinder 3. When the striking frame 15 strikes the storage cylinder 3, it facilitates the falling of the material inside the storage cylinder 3.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] 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 pneumatic seeder with a double-frame beam structure, comprising an upper frame beam (1), characterized in that: The bottom of the upper frame beam (1) is fixedly connected to the lower frame beam (2). The upper frame beam (1) is provided with four storage cylinders (3) evenly distributed in the front-back direction. Each storage cylinder (3) is provided with a pneumatic seeding mechanism (4) below it. The bottom of the storage cylinder (3) is connected to the pneumatic seeding mechanism (4) through a hose. The pneumatic seeding mechanism (4) is fixedly connected to the lower frame beam (2) through a bracket. The lower frame beam (2) is provided with a supporting walking mechanism (5) and a soil burying mechanism (6) below it. The surface of the storage cylinder (3) is fixedly connected with multiple fixed blocks (7) evenly distributed in a ring. The bottom of the fixed block (7) is provided with a groove, and a rubber damping ring is fixedly connected inside the groove. The fixed block (7) is slidably connected with a guide rod (8) inside it. The bottom of the guide rod (8) is fixedly connected to the upper frame beam (1). The surface of the guide rod (8) is fitted with a compression spring (9). The top of the compression spring (9) is... The bottom of the compression spring (9) is fixedly connected to the bottom of the rubber damping ring, and the bottom end of the compression spring (9) is fixedly connected to the top of the upper skeleton beam (1). Both sides of the storage cylinder (3) are hinged with connecting rods (10). Both sides of the top of the upper skeleton beam (1) are provided with sliding grooves, and sliders (11) are slidably connected to the inside of the sliding grooves. The end of the connecting rod (10) away from the storage cylinder (3) is hinged to the top of the slider (11). The front and rear sides of the slider (11) are fixedly connected with first racks (12). The upper skeleton beam (1) is provided with movable grooves on the top and in front and behind the slider (11), and the second rack (13) is slidably connected to the inside of the movable groove. The upper skeleton beam (1) is rotatably connected with gears (14) on the top and in front and behind the slider (11). The gears (14) mesh with the first rack (12) and the second rack (13) respectively. The second rack (13) is fixedly connected to a striking frame (15) at one end near the storage cylinder (3).

2. The air-suction seeder with a double-frame beam structure according to claim 1, characterized in that: The top of the storage cylinder (3) is fixedly connected to a cover plate (16) by bolts. The inside of the cover plate (16) is rotatably connected to a rotating shaft (17). The top of the cover plate (16) is fixedly connected to a motor (18). The output end of the motor (18) is fixedly connected to the rotating shaft (17). The bottom of the rotating shaft (17) extends into the inside of the storage cylinder (3). A scraper (19) is fixedly connected below the surface of the rotating shaft (17). The bottom of the scraper (19) is in contact with the bottom of the inner wall of the storage cylinder (3).

3. The air-suction seeder with a double-frame beam structure according to claim 2, characterized in that: The surface of the rotating shaft (17) is fixedly connected with a spiral conveying blade (20), which is located above the scraper (19).

4. The air-suction seeder with a double-frame beam structure according to claim 3, characterized in that: A stirring rack (21) is fixedly connected to the surface of the rotating shaft (17), and the stirring rack (21) is located above the spiral conveying blade (20).

5. A pneumatic seeder with a double-frame beam structure according to claim 4, characterized in that: The surface of the compression spring (9) is provided with an anti-rust coating. The cover plate (16) is fixedly connected to a bearing, and the outer ring of the bearing is fixedly connected to the cover plate (16), and the inner ring of the bearing is fixedly connected to the rotating shaft (17).

6. The air-suction seeder with a double-frame beam structure according to claim 5, characterized in that: The inner wall of the storage cylinder (3) is smooth, and the top of the cover plate (16) is connected to the feed pipe, and the top of the feed pipe is threaded with a sealing cap.

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