Dual hopper seeding unit wheel carriage

Abstract

The utility model provides a kind of double bin seeding monomer with wheel frame, comprising: frame body, frame body extends along first preset direction;Seed pressing assembly, seed pressing assembly movably set in one side of frame body relative to frame body, seed pressing assembly has seed pressing part and adjusting part, adjusting part is connected with seed pressing part, seed pressing part is used to carry out compaction treatment to the soil after seeding;Adjusting part is used to adjust the compaction degree of seed pressing part to soil;Stable support base is provided by frame body, seed pressing assembly is realized to the compaction force of seed pressing part by independently arranged adjusting part Active regulation and control, overcome the defect that seed pressing roller cannot be adapted to different soil conditions, significantly improve seed covering soil uniformity and emergence rate.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically to a wheel frame for a dual-bin seeding unit. Background Technology

[0002] Driven by the rapid development of agricultural mechanization, sowing equipment is evolving towards higher efficiency, precision, and multi-functionality. Among these, dual-bin sowing units, capable of simultaneously sowing two rows in a single operation, show promising application prospects in improving operational efficiency and optimizing crop layout. However, existing wheel frames lack independent adjustment mechanisms for the height or pressure of the seed pressing roller, preventing flexible adjustments based on different soil conditions or sowing depth requirements, thus affecting seed coverage and germination rates. A search revealed a wheel frame for a sowing unit disclosed in patent publication number CN219628316U. This device uses a contour-following mechanism to ensure the front wheel floats with terrain undulations, and a limiting structure allows the rear wheel to also float with terrain undulations during movement, giving the sowing unit a contour-following function to adapt to different terrain changes. However, different soils have varying hardness, and relying solely on soil support for the seed pressing roller to adapt to the soil still presents problems affecting seed coverage and germination rates.

[0003] Therefore, existing technologies need further development. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a wheel frame for a single seeding unit with dual-bins, so as to solve the technical problem in related technologies that cannot be flexibly adjusted according to different soil conditions or seeding depth requirements, which affects the seed covering effect and germination rate.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: a double-bin seeding single-unit wheel frame is provided, comprising: a frame body extending along a first preset direction; a seed pressing component movably disposed on one side of the frame body relative to the frame body, the seed pressing component having a seed pressing part and an adjusting part, the adjusting part being connected to the seed pressing part, the seed pressing part being used to compact the soil after sowing; and the adjusting part being used to adjust the compaction of the seed pressing part on the soil.

[0006] Furthermore, the dual-bin seeding unit wheel frame also includes: a seeding assembly, which is mounted on the frame; a seed pressing assembly including: a connecting frame, which extends along a second preset direction and is connected to the seed pressing part; a moving rod, which extends vertically and is mounted on the connecting frame; a first limiting plate, which is mounted on one side of the seeding assembly and extends along the extension direction of the frame; a second limiting plate, which is mounted on the side of the seeding assembly away from the first limiting plate and extends along the extension direction of the frame, and is positioned opposite to the first limiting plate; an adjusting block, whose two ends are respectively connected to the first limiting plate and the second limiting plate; a threaded groove is provided on the adjusting block, which extends vertically; the moving rod passes through the threaded groove; a limiting piece, which is mounted on the end of the moving rod away from the connecting frame; and an adjusting member, which has a threaded part and a handle part, with the handle part located at the end of the threaded part away from the adjusting block; the limiting piece abuts against the handle part; and the threaded part is threadedly connected to the threaded groove.

[0007] Furthermore, the seed pressing assembly also includes a spring, which is sleeved on the moving rod, with both ends of the spring abutting against the connecting frame and the adjusting block, respectively; wherein the connecting frame, the moving rod, the first limiting plate, the second limiting plate, the adjusting block, the limiting piece, the adjusting component, and the spring form an adjusting part.

[0008] Further, the seed pressing assembly includes: a first connecting plate extending along the extension direction of the frame and disposed on one side of the frame; the first connecting plate is connected to one end of the connecting frame; a second connecting plate extending along the extension direction of the frame and disposed on the side of the frame away from the first connecting plate; the second connecting plate is disposed opposite to the first connecting plate; the other end of the connecting frame is connected to the second connecting plate; a sliding rod extending along the width direction of the frame, a limiting groove being provided on the frame, the limiting groove extending vertically, the sliding rod being movably disposed within the limiting groove along the extension direction of the limiting groove, and both ends of the sliding rod being connected to the first connecting plate and the second connecting plate respectively; a seed pressing wheel rotatably disposed between the first connecting plate and the second connecting plate, both ends of the seed pressing wheel being connected to the first connecting plate and the second connecting plate respectively, and the seed pressing wheel and the sowing assembly being spaced apart along the extension direction of the frame; wherein, the first connecting plate, the second connecting plate, the sliding rod, and the seed pressing wheel form a seed pressing part.

[0009] Furthermore, the seed pressing assembly also includes a handle, which extends along a third preset direction, and its two ends are respectively connected to a first connecting plate and a second connecting plate.

[0010] Furthermore, the seed pressing assembly also includes: a soil scraper, which extends along the width of the frame and is connected at both ends to a first connecting plate and a second connecting plate, respectively; the soil scraper and the seed pressing wheel are spaced apart along the extension direction of the frame; the soil scraper is used to scrape off the soil on the seed pressing wheel.

[0011] Further, the sowing assembly includes: a first outer shell, which is mounted on a frame and has a first seed inlet chamber and a first sowing chamber arranged vertically in sequence, as well as a first seed outlet communicating with the first sowing chamber; a first seed suction plate assembly, which is disposed on the first outer shell and includes a first seed suction plate body, a first negative pressure chamber disposed within the first seed suction plate assembly, which communicates with the first sowing chamber, the first seed suction plate body being rotatably disposed within the first negative pressure chamber, and having a plurality of first seed suction holes disposed within the first seed suction plate body at intervals along the periphery of the first seed suction plate body; the first seed suction plate assembly being used to adsorb seeds exiting from the first seed inlet chamber onto the first seed suction holes of the first seed suction plate body; a first seed scraper, which is disposed in the first sowing chamber and located at the first seed outlet, and is used to scrape the seeds adsorbed by the first seed suction plate body onto the first seed outlet; and a second outer shell, which is arranged along a second preset... Extending in a certain direction, a second outer shell is mounted on the frame, and the second outer shell is positioned opposite to the first outer shell; the second outer shell has a second seed inlet chamber and a second seed sowing chamber, and a second seed outlet communicating with the second seed sowing chamber; the second seed inlet chamber and the second seed sowing chamber are connected; the first seed inlet chamber and the second seed inlet chamber form a seed inlet space; a second seed suction plate assembly is mounted on the second outer shell, the second seed suction plate assembly includes a second seed suction plate body, a second negative pressure chamber is provided inside the second seed suction plate assembly, the second negative pressure chamber is connected with the second seed sowing chamber, the second seed suction plate body is rotatably mounted in the second negative pressure chamber, the second seed suction plate body has a plurality of second seed suction holes, the plurality of second seed suction holes are spaced apart along the periphery of the second seed suction plate body, the second seed suction plate assembly is used to adsorb the seeds coming out of the second seed inlet chamber onto the second seed suction holes of the second seed suction plate body; a second seed scraper is mounted inside the second seed sowing chamber, and the first seed scraper is located at the first seed outlet, the second seed scraper is used to scrape the seeds adsorbed by the second seed suction plate body onto the second seed outlet.

[0012] Furthermore, the seeding assembly also includes: a connecting shaft, one end of which passes through a first outer shell and is fixedly connected to a first seed suction plate, the first seed suction plate being coaxially arranged with the connecting shaft; the other end of the connecting shaft passes through a second outer shell and is fixedly connected to a second seed suction plate, the second seed suction plate being coaxially arranged with the connecting shaft.

[0013] Beneficial effects:

[0014] 1. The frame provides a stable support foundation, and the seed pressing component achieves active control of the pressing force of the seed pressing part through an independently set adjustment part, which overcomes the defect that the seed pressing roller cannot adapt to different soil conditions, and significantly improves the uniformity of seed covering and germination rate.

[0015] 2. The threaded groove of the adjusting block and the threaded part of the adjusting component cooperate to form a precision threaded pair. By rotating the hand-held part, the moving rod is driven to raise and lower the connecting frame, realizing stepless adjustment of the height of the pressing part. The first limit plate and the second limit plate form a rigid guide frame to ensure that the moving rod moves vertically without deflection, greatly improving the pressure adjustment accuracy.

[0016] 3. The spring forms an elastic buffer system between the connecting frame and the adjusting block. When the terrain undulation causes the instantaneous pressure of the seed pressing part to increase, the spring absorbs the impact energy to protect the mechanism; at the same time, it provides continuous downward pressure compensation to ensure that the seed pressing part maintains a constant pressure in both soft and hard soil. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a wheel frame for a dual-bin seeding unit adopted in an embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram showing the position of the wheel frame for a dual-bin seeding unit used in an embodiment of this utility model.

[0019] The above figures include the following reference numerals:

[0020] 1. Frame; 2. Seed pressing assembly; 3. Sowing assembly; 4. Connecting frame; 5. Moving rod; 6. First limiting plate; 7. Second limiting plate; 8. Adjusting block; 11. Threaded part; 12. Hand handle; 13. Spring; 14. First connecting plate; 15. Second connecting plate; 16. Sliding rod; 17. Limiting groove; 18. Seed pressing wheel; 19. Hand-held part; 20. Scraper; 21. First outer shell; 23. Second outer shell. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0022] According to an embodiment of this utility model, a wheel frame for a dual-bin seeding unit is provided. Please refer to [link / reference]. Figures 1 to 2 The device includes: a frame 1 extending along a first preset direction; a seed pressing component 2 movably disposed on one side of the frame 1 relative to the frame 1, the seed pressing component 2 having a seed pressing part and an adjustment part, the adjustment part being connected to the seed pressing part, the seed pressing part being used to compact the soil after sowing; and the adjustment part being used to adjust the compaction of the seed pressing part on the soil.

[0023] By adopting the above technical solution, the frame 1 provides a stable support foundation, and the seed pressing component 2 achieves active control of the pressing force of the seed pressing part through an independently set adjustment part, which overcomes the defect that the seed pressing roller cannot adapt to different soil conditions and significantly improves the uniformity of seed covering and germination rate.

[0024] Please refer to Figure 1 The dual-bin seeding unit wheel frame also includes: a seeding assembly 3, which is mounted on the frame 1; and a seed pressing assembly 2, which includes: a connecting frame 4, which extends along a second preset direction and is connected to the seed pressing part; a moving rod 5, which extends vertically and is mounted on the connecting frame 4; a first limiting plate 6, which is mounted on one side of the seeding assembly 3 and extends along the extension direction of the frame 1; and a second limiting plate 7, which is mounted on the side of the seeding assembly 3 away from the first limiting plate 6 and extends along the frame 1. The extension direction of body 1 extends, and the second limiting plate 7 is arranged opposite to the first limiting plate 6; the adjusting block 8 is connected to the first limiting plate 6 and the second limiting plate 7 at both ends respectively; the adjusting block 8 is provided with a threaded groove, which extends in the vertical direction; the moving rod 5 passes through the threaded groove; the limiting plate is installed at the end of the moving rod 5 away from the connecting frame 4; the adjusting member has a threaded part 11 and a handle part 12, and the handle part 12 is arranged at the end of the threaded part 11 away from the adjusting block 8; the limiting plate abuts against the handle part 12; the threaded part 11 is threadedly connected to the threaded groove.

[0025] By adopting the above technical solution, the threaded groove of the adjusting block 8 and the threaded part 11 of the adjusting component cooperate to form a precision threaded pair. By rotating the hand-held part 12, the moving rod 5 is driven to lift and lower the connecting frame 4, thereby realizing stepless adjustment of the height of the pressing part. The first limiting plate 6 and the second limiting plate 7 form a rigid guide frame to ensure that the moving rod 5 moves vertically without swaying, which greatly improves the pressure adjustment accuracy.

[0026] Please refer to Figure 1 The seed pressing assembly 2 also includes a spring 13, which is sleeved on the moving rod 5, and the two ends of the spring 13 abut against the connecting frame 4 and the adjusting block 8 respectively; wherein the connecting frame 4, the moving rod 5, the first limiting plate 6, the second limiting plate 7, the adjusting block 8, the limiting piece, the adjusting component and the spring 13 form an adjusting part.

[0027] By adopting the above technical solution, the spring 13 forms an elastic buffer system between the connecting frame 4 and the adjusting block 8. When the terrain undulation causes the instantaneous pressure of the seed pressing part to increase, the spring absorbs the impact energy to protect the mechanism; at the same time, it provides continuous downward pressure compensation to ensure that the seed pressing part maintains a constant pressure in both soft and hard soil.

[0028] Please refer to Figure 2The seed pressing assembly 2 includes: a first connecting plate 14, which extends along the extension direction of the frame 1 and is disposed on one side of the frame 1; the first connecting plate 14 is connected to one end of the connecting frame 4; a second connecting plate 15, which extends along the extension direction of the frame 1 and is disposed on the side of the frame 1 away from the first connecting plate 14; the second connecting plate 15 is disposed opposite to the first connecting plate 14; the other end of the connecting frame 4 is connected to the second connecting plate 15; and a sliding rod 16, which extends along the width direction of the frame 1, with a limit groove 17 provided on the frame 1. The limiting groove 17 extends vertically, and the sliding rod 16 is movably disposed within the limiting groove 17 along the extending direction of the limiting groove 17. The two ends of the sliding rod 16 are respectively connected to the first connecting plate 14 and the second connecting plate 15. The seed pressing wheel 18 is rotatably disposed between the first connecting plate 14 and the second connecting plate 15. The two ends of the seed pressing wheel 18 are respectively connected to the first connecting plate 14 and the second connecting plate 15. The seed pressing wheel 18 and the sowing assembly 3 are spaced apart along the extending direction of the frame 1. The first connecting plate 14, the second connecting plate 15, the sliding rod 16, and the seed pressing wheel 18 form the seed pressing part.

[0029] By adopting the above technical solution, the first connecting plate 14 and the second connecting plate 15 slide vertically in the limiting groove 17 through the slide rod 16, forming a rigid lifting platform for the seed pressing wheel 18; the limiting groove 17 constrains the slide rod 16 to move only in the vertical direction, completely eliminating the lateral displacement during the seed pressing process and ensuring the straightness of the seed pressing trajectory.

[0030] Please refer to Figure 2 The seed pressing assembly 2 also includes a handle 19, which extends along a third preset direction and whose two ends are connected to the first connecting plate 14 and the second connecting plate 15, respectively.

[0031] By adopting the above technical solution, the handle 19 spans and connects the first connecting plate 14 and the second connecting plate 15, providing a concentrated force point for manually lifting the seed roller 18, which greatly simplifies the operation process during equipment transportation and maintenance.

[0032] Please refer to Figure 2 The seed pressing assembly 2 also includes: a soil scraper 20, which extends along the width direction of the frame 1, and the two ends of the soil scraper 20 are respectively connected to the first connecting plate 14 and the second connecting plate 15; the soil scraper 20 and the seed pressing wheel 18 are spaced apart along the extension direction of the frame 1; the soil scraper 20 is used to scrape the soil off the seed pressing wheel 18.

[0033] By adopting the above technical solution, the scraper 20 and the seed pressing wheel 18 are fitted together with a gap, and the soil adhering to the soil is automatically peeled off when the seed pressing wheel 18 rotates, preventing the seed pressing wheel 18 from becoming unbalanced or changing in diameter due to soil accumulation, maintaining the stability of the compaction effect and reducing the frequency of downtime for cleaning.

[0034] Please refer to Figure 2 The sowing assembly 3 includes: a first outer shell 21, which is mounted on the frame 1. The first outer shell 21 has a first seed inlet chamber and a first sowing chamber arranged vertically in sequence, and a first seed outlet communicating with the first sowing chamber; and a first seed suction plate assembly, which is disposed on the first outer shell 21. The first seed suction plate assembly includes a first seed suction plate body, and a first negative pressure chamber is provided inside the first seed suction plate assembly. The first negative pressure chamber communicates with the first sowing chamber, and the first seed suction plate body is rotatably oriented. The first seed suction plate assembly is located within a first negative pressure chamber. It has multiple first seed suction holes spaced apart along its periphery. The first seed suction plate assembly is used to adsorb seeds exiting from the first seed inlet chamber onto the first seed suction holes of the first seed suction plate assembly. A first seed scraper is located in the first sowing chamber at the first seed outlet. The first seed scraper is used to scrape the seeds adsorbed by the first seed suction plate assembly onto the first seed outlet. A second outer shell 23 is located along a second preset direction. Extending outwards, a second outer shell 23 is mounted on the frame 1, and the second outer shell 23 is disposed opposite to the first outer shell 21; the second outer shell 23 is provided with a second seed inlet chamber and a second seed sowing chamber, and a second seed outlet communicating with the second seed sowing chamber; the second seed inlet chamber and the second seed sowing chamber are connected; the first seed inlet chamber and the second seed inlet chamber form a seed inlet space; a second seed suction plate assembly is disposed on the second outer shell 23, the second seed suction plate assembly includes a second seed suction plate body, and a second negative pressure chamber is provided inside the second seed suction plate assembly, the second negative pressure chamber being connected with the first seed sowing chamber. The two sowing chambers are connected, and the second seed suction plate body is rotatably set in the second negative pressure chamber. The second seed suction plate body has multiple second seed suction holes, which are spaced apart along the periphery of the second seed suction plate body. The second seed suction plate assembly is used to adsorb the seeds coming out of the second seed inlet chamber onto the second seed suction holes of the second seed suction plate body. The second seed scraper is set in the second sowing chamber, and the first seed scraper is located at the first seed outlet. The second seed scraper is used to scrape the seeds adsorbed by the second seed suction plate body to the second seed outlet.

[0035] By adopting the above technical solution, the first outer shell 21 and the second outer shell 23 are symmetrically arranged to form a dual independent sowing unit. The first seed inlet chamber and the second seed inlet chamber are connected to realize dual-channel seed supply. The first seed suction plate and the second seed suction plate synchronously perform adsorption-scraping action to meet the agronomic requirements of double-row precision sowing.

[0036] Please refer to Figure 2 The seeding assembly 3 also includes: a connecting shaft, one end of which passes through the first outer shell 21 and is fixedly connected to the first seed suction plate, the first seed suction plate being coaxially arranged with the connecting shaft; the other end of the connecting shaft passes through the second outer shell 23 and is fixedly connected to the second seed suction plate, the second seed suction plate being coaxially arranged with the connecting shaft.

[0037] By adopting the above technical solution, a single connecting shaft rigidly connects the first seed suction disc and the second seed suction disc, forcing them to rotate absolutely synchronously, eliminating the sowing row spacing deviation caused by the difference in the rotation speed of the two discs, and ensuring the temporal and spatial consistency of double-row sowing.

[0038] Working principle:

[0039] First, the operator rotates the hand-held part 12, and through the cooperation of the threaded part 11 and the threaded groove of the adjusting block 8, drives the moving rod 5 to raise and lower the connecting frame 4, thereby adjusting the initial height of the pressing wheel 18.

[0040] Spring 13 is pre-compressed between connecting bracket 4 and adjusting block 8 to set the basic pressure.

[0041] Seeds enter the first seed inlet chamber of the first outer shell 21 and the second seed inlet chamber of the second outer shell 23 (the two chambers are connected to ensure balanced seed supply).

[0042] The connecting shaft drives the first seed suction plate 22 and the second seed suction plate to rotate synchronously, and vacuum adsorbs the seeds to the first seed suction hole and the second seed suction hole.

[0043] When the seed suction plate rotates to the positions of the first and second seed scraping plates, the seeds are scraped off and accurately placed into the seed furrow through the first and second seed outlets respectively (achieving sowing with a narrow row spacing of ≤10cm).

[0044] After being covered with a soil-burying plate, the seed-pressing wheel 18 compacts the soil following the sowing trajectory:

[0045] When the soil is loose, the spring 13 pushes the connecting frame 4 to keep the pressing wheel 18 under constant downward pressure.

[0046] When encountering hard soil or protruding terrain, the ground reaction force lifts the seed pressing wheel 18 → the slide bar 16 slides up along the limiting groove 17 → the spring 13 buffers the impact force → protecting the mechanism and maintaining the continuity of seed pressing.

[0047] The scraper blade 20 scrapes away soil adhering to the surface of the seed pressing wheel 18 in real time, preventing changes in diameter from affecting the compaction force.

[0048] During continuous operation, the slide bar 16 floats vertically within the limiting groove 17, causing the first connecting plate 14 and the second connecting plate 15 to drive the seed pressing wheel 18 to follow the terrain undulations.

[0049] When going downhill: Spring 13 extends to supplement the downward pressure of the seed pressing wheel 18.

[0050] When going uphill: the ground reaction force compresses the spring 13 to prevent overpressure.

[0051] When the work is finished or cleaning is required, lift the handle 19 upwards, which will lift the first connecting plate 14 / second connecting plate 15 and the seed pressing wheel 18 as a whole, and remove them from the ground.

[0052] The rotating adjustment handle 12 raises the moving rod 5, releasing the working state of the seed pressing wheel 18.

[0053] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0054] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0055] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0056] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0057] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A dual-hopper seeding unit wheel carriage characterized by, include: The frame (1) extends along a first preset direction; The seed pressing component (2) is movably disposed on one side of the frame (1) relative to the frame (1). The seed pressing component (2) has a seed pressing part and an adjustment part. The adjustment part is connected to the seed pressing part. The seed pressing part is used to compact the soil after sowing. The adjustment part is used to adjust the compaction of the seed pressing part on the soil.

2. The dual-hopper seeding unit wheel carriage of claim 1, wherein, The dual-bin seeding unit wheel frame also includes: a seeding component (3), which is mounted on the frame (1); The seed pressing component (2) includes: A connecting frame (4) extends along a second preset direction and is connected to the seed pressing part; A movable rod (5) extends vertically and is mounted on the connecting frame (4); The first limiting plate (6) is installed on one side of the seeding assembly (3) and extends along the extension direction of the frame (1). The second limiting plate (7) is installed on the side of the seeding assembly (3) away from the first limiting plate (6). The second limiting plate (7) extends along the extension direction of the frame (1) and is arranged opposite to the first limiting plate (6). An adjusting block (8) is connected at both ends to the first limiting plate (6) and the second limiting plate (7) respectively; a threaded groove is provided on the adjusting block (8), and the threaded groove extends in the vertical direction; the moving rod (5) passes through the threaded groove. A limiting piece is installed at the end of the moving rod (5) away from the connecting frame (4); An adjusting member having a threaded portion (11) and a handle portion (12), the handle portion (12) being disposed at one end of the threaded portion (11) away from the adjusting block (8); a limiting piece abutting against the handle portion (12); and the threaded portion (11) being threadedly connected to the threaded groove.

3. The dual-hopper seeding unit wheel carriage of claim 2, wherein, The seed pressing component (2) also includes: Spring (13), the spring (13) is sleeved on the moving rod (5), and the two ends of the spring (13) abut against the connecting frame (4) and the adjusting block (8) respectively; The connecting frame (4), the moving rod (5), the first limiting plate (6), the second limiting plate (7), the adjusting block (8), the limiting piece, the adjusting member, and the spring (13) form the adjusting part.

4. The dual-hopper seeding unit wheel carriage of claim 2, wherein, The seed pressing component (2) includes: The first connecting plate (14) extends along the extension direction of the frame (1) and is disposed on one side of the frame (1); the first connecting plate (14) is connected to one end of the connecting frame (4). The second connecting plate (15) extends along the extension direction of the frame (1) and is disposed on the side of the frame (1) away from the first connecting plate (14); the second connecting plate (15) is disposed opposite to the first connecting plate (14); the other end of the connecting frame (4) is connected to the second connecting plate (15). A sliding rod (16) extends along the width direction of the frame (1). A limiting groove (17) is provided on the frame (1). The limiting groove (17) extends in the vertical direction. The sliding rod (16) is movably disposed in the limiting groove (17) along the extension direction of the limiting groove (17). The two ends of the sliding rod (16) are respectively connected to the first connecting plate (14) and the second connecting plate (15). The seed pressing wheel (18) is rotatably disposed between the first connecting plate (14) and the second connecting plate (15). The two ends of the seed pressing wheel (18) are respectively connected to the first connecting plate (14) and the second connecting plate (15). The seed pressing wheel (18) and the sowing assembly (3) are spaced apart along the extension direction of the frame (1). The first connecting plate (14), the second connecting plate (15), the slide bar (16), and the seed pressing wheel (18) form the seed pressing part.

5. The dual-hopper seeding unit wheel carriage of claim 4, wherein, The seed pressing assembly (2) further includes a handle (19), which extends along a third preset direction, and the two ends of the handle (19) are respectively connected to the first connecting plate (14) and the second connecting plate (15).

6. The dual-hopper seeding unit wheel carriage of claim 4, wherein, The seed pressing component (2) also includes: A scraper (20) extends along the width direction of the frame (1), and the two ends of the scraper (20) are respectively connected to the first connecting plate (14) and the second connecting plate (15); the scraper (20) and the seed pressing wheel (18) are spaced apart along the extension direction of the frame (1); the scraper (20) is used to scrape the soil off the seed pressing wheel (18).

7. The dual-hopper seeding unit wheel carriage of claim 2, wherein, The seeding component (3) includes: The first outer shell (21) is mounted on the frame (1). The first outer shell (21) is provided with a first seed inlet chamber and a first seeding chamber in sequence along the vertical direction, and a first seed outlet communicating with the first seeding chamber. The first seed inlet chamber is connected to the first seeding chamber. The first seed suction plate assembly is disposed on the first outer shell (21). The first seed suction plate assembly includes a first seed suction plate body. A first negative pressure chamber is provided inside the first seed suction plate assembly. The first negative pressure chamber is connected to the first sowing chamber. The first seed suction plate body is rotatably disposed in the first negative pressure chamber. A plurality of first seed suction holes are opened inside the first seed suction plate body. The plurality of first seed suction holes are spaced apart along the periphery of the first seed suction plate body. The first seed suction plate assembly is used to adsorb the seeds coming out of the first seed inlet chamber onto the first seed suction holes of the first seed suction plate body. A first seed scraper is disposed in the first sowing chamber and located at the first seed outlet. The first seed scraper is used to scrape the seeds adsorbed by the first seed suction disc body to the first seed outlet. The second outer shell (23) extends along a second preset direction and is mounted on the frame (1). The second outer shell (23) is disposed opposite to the first outer shell (21). The second outer shell (23) is provided with a second seed inlet cavity and a second seeding cavity, and a second seed outlet communicating with the second seeding cavity. The second seed inlet cavity is connected to the second seeding cavity. The first seed inlet cavity and the second seed inlet cavity form a seed inlet space. The second seed suction plate assembly is disposed on the second outer shell (23). The second seed suction plate assembly includes a second seed suction plate body. A second negative pressure chamber is provided inside the second seed suction plate assembly. The second negative pressure chamber is connected to the second sowing chamber. The second seed suction plate body is rotatably disposed inside the second negative pressure chamber. A plurality of second seed suction holes are provided inside the second seed suction plate body. The plurality of second seed suction holes are spaced apart along the periphery of the second seed suction plate body. The second seed suction plate assembly is used to adsorb the seeds coming out of the second seed inlet chamber onto the second seed suction holes of the second seed suction plate body. The second seed scraper is disposed inside the second sowing chamber, and the first seed scraper is located at the first seed outlet. The second seed scraper is used to scrape the seeds adsorbed by the second seed suction disc body to the second seed outlet.

8. The dual-hopper seeding unit wheel carriage of claim 7, wherein, The seeding component (3) also includes: A connecting shaft, one end of which passes through the first outer shell (21) and is fixedly connected to the first seed suction plate, the first seed suction plate being coaxially arranged with the connecting shaft; the other end of the connecting shaft passes through the second outer shell (23) and is fixedly connected to the second seed suction plate, the second seed suction plate being coaxially arranged with the connecting shaft.

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