Press wheel mechanism of seeding machine and triangular seeding machine

Abstract

The utility model discloses a seeder press wheel mechanism and a delta-shaped seeder, and belongs to the technical field of seeders, the seeder press wheel mechanism comprises a rack, the rack is provided with a lifting assembly, the lifting assembly comprises a lifting unit, and the lifting assembly drives the lifting unit to do lifting motion; the device further comprises a press wheel set which is connected with the lifting unit. The press wheel set is connected with an elastic assembly and used for adjusting the pressure of press wheels on soil, and the elastic assembly is independently arranged outside the lifting assembly. The elastic assembly is independent of the lifting assembly, so that the elastic assembly and the lifting assembly can work relatively independently, the situation that the compression amount of the elastic assembly is changed when the lifting assembly adjusts the height of the press wheel set is avoided, and the pressure of the press wheel set on soil is more controllable.

Description

Technical Field

[0001] This utility model relates to the field of seeder technology, specifically to a seeder press wheel mechanism and a triangular seeder. Background Technology

[0002] In the mechanized sowing and production of crops, different crop types have different requirements for compaction pressure. Even for the same crop, in the same field, different locations may have different soil moisture content, hardness, and degree of tillage, thus requiring different levels of compaction pressure. Therefore, it is necessary to be able to adjust the compaction pressure conveniently and quickly during the operation of the machinery.

[0003] The operation of existing seeders mainly includes several stages such as furrowing, sowing, covering, and compaction. The compaction stage generally involves compacting the soil using a compaction wheel. For example, Chinese patent document CN208863135U discloses a contour compaction device for a seeder. The ground wheel floats up and down due to uneven ground. As the compression spring continuously compresses and extends, the screw floats up and down through a hole in the frame, ensuring the compaction wheel maintains a firm and continuous contact with the ground, thus adapting to uneven surfaces. However, this compaction device allows adjustment of the compaction height by rotating the nut to move the screw up and down. But since the screw passes through the compression spring, the up-and-down movement of the screw causes changes in the compression of the spring, which in turn alters the pressure of the compaction wheel on the ground, making it difficult to control the compaction effect. Utility Model Content

[0004] The purpose of this utility model is to provide a press wheel mechanism for a seeder and a triangular seeder, which solves the problem in the prior art that when the press height of the press device of the seeder is adjusted, the up and down movement of the screw causes changes in the compression amount of the compression spring, which in turn changes the pressure of the press wheel on the ground, making it difficult to control the soil compaction effect.

[0005] To achieve the above objectives, this utility model provides a press wheel mechanism for a seeder, including a frame, on which a lifting assembly is installed. The lifting assembly includes a lifting unit, which drives the lifting unit to move up and down. It also includes a press wheel assembly connected to the lifting unit. The press wheel assembly is connected to an elastic component for adjusting the pressure of the press wheel on the soil. The elastic component is independently disposed outside the lifting assembly.

[0006] Furthermore, the compaction wheel assembly includes a soil covering wheel and a soil pressing wheel. The soil covering wheel is connected to the lifting unit via a first connecting arm, and the soil pressing wheel is connected to the lifting unit via a second connecting arm. The elastic component is disposed between the first connecting arm and the second connecting arm.

[0007] Furthermore, the elastic component includes a fixed end and an adjusting end, the fixed end being fixedly connected to the first connecting arm; the second connecting arm is provided with an adjusting device, and the adjusting end cooperates with the adjusting device to change the amount of expansion and contraction of the elastic component.

[0008] Furthermore, the adjusting device extends along the length of the second connecting arm, and the adjusting device is provided with multiple fixing slots, with the adjusting end engaging and fixing with one of the fixing slots.

[0009] Furthermore, the lifting assembly includes a drive unit, which is connected to the lifting unit in a transmission manner, and the drive unit drives the lifting unit to move up and down relative to the ground.

[0010] Furthermore, the drive unit includes a screw and a rocker arm, the rocker arm is connected to one end of the screw, and the other end of the screw is threaded to the frame; the lifting unit is a lifting arm sleeved on the outside of the screw, and the rocker arm drives the screw to rotate around the axial direction to drive the lifting arm to move up and down.

[0011] Furthermore, the lifting assembly is equipped with a limit device, which limits the lifting unit when it is adjusted to a designated position.

[0012] Furthermore, the limiting device includes a limiting screw, which is threadedly connected to the lifting unit and passes through the lifting unit; the end of the limiting screw abuts against the screw to limit the lifting unit.

[0013] Furthermore, the covering wheel and the compacting wheel are arranged one in front of the other in the direction of travel, with the covering wheel located in front of the compacting wheel.

[0014] Furthermore, the covering wheel includes two arc-shaped wheels, the arc surfaces of the two arc-shaped wheels are arranged opposite each other and form a covering gap; the first connecting arm is connected to a scraper, the scraper is used to scrape off the soil at the covering gap of the covering wheel.

[0015] A triangular seeder includes the aforementioned press wheel mechanism.

[0016] Compared with existing known technologies, the technical solution provided by this utility model has the following beneficial effects:

[0017] This utility model discloses a press wheel mechanism for a seeder. The press wheel assembly is connected to a lifting unit. Driven by a lifting component, the lifting unit can move up and down, and the press wheel assembly moves up and down accordingly, thereby adjusting the pressing height of the press wheel assembly. The press wheel assembly is connected to an elastic component, which can adjust the pressure of the press wheel assembly on the soil. Moreover, the elastic component is set independently of the lifting component, so the elastic component and the lifting component can work relatively independently. This avoids changes in the compression of the elastic component caused by the lifting component when adjusting the height of the press wheel assembly, making the pressure of the press wheel assembly on the soil more controllable.

[0018] It is obvious that the elements or features described in the above individual embodiments can be used alone or in combination in other embodiments. Attached Figure Description

[0019] The dimensions and scales in the accompanying drawings do not represent the actual dimensions and scales of the product. The drawings are for illustrative purposes only, and some non-essential elements or features have been omitted for clarity.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the press wheel mechanism in an embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the pressure wheel mechanism in the main view of this utility model embodiment;

[0022] Figure 3 This is a top view of the press wheel mechanism in an embodiment of this utility model.

[0023] Explanation of reference numerals in the attached figures

[0024] 100. Frame; 200. Lifting assembly; 210. Lifting unit; 220. Screw; 230. Rocker arm; 310. Soil covering wheel; 311. Arc wheel; 320. Soil pressing wheel; 330. First connecting arm; 340. Second connecting arm; 341. Through groove; 350. Elastic component; 351. Fixed end; 352. Adjusting end; 360. Adjusting device; 361. Fixed groove; 400. Limiting device; 410. Limiting screw; 500. Scraper. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings. The embodiments described herein are merely preferred embodiments of the present invention. Those skilled in the art can conceive of other ways to implement the present invention based on the preferred embodiments, and such other ways also fall within the scope of the present invention.

[0026] Reference Figures 1-3This embodiment provides a planter press wheel mechanism, including a frame 100 connected to the planter. The planter moves synchronously with the press wheel mechanism. A lifting assembly 200 is mounted on the frame 100, tilted vertically at a certain angle relative to the ground. The lifting assembly 200 includes a lifting unit 210, which is driven to move vertically. The press wheel mechanism also includes a press wheel assembly for gathering soil in the field, covering the seeds with the sown soil, ensuring proper seed coverage and maintaining soil moisture. The press wheel assembly is connected to the lifting unit 210, which moves vertically under the drive of the lifting assembly 200, causing the press wheel assembly to move vertically as well, thus adjusting the pressing height of the press wheel assembly. An elastic component 350 is connected to the press wheel assembly to adjust the pressure of the press wheel on the soil. The elastic component 350 is independently located outside the lifting assembly 200. The elastic component 350 can adjust the pressure of the compaction wheel set on the soil. Moreover, the elastic component 350 is set independently of the lifting component 200, so the elastic component 350 and the lifting component 200 can work relatively independently. This avoids the lifting component 200 causing changes in the compression of the elastic component 350 when adjusting the height of the compaction wheel set, making the pressure of the compaction wheel set on the soil more controllable.

[0027] To ensure that the compaction wheel assembly has a good soil covering effect, such as Figure 1 and Figure 2 As shown, the compaction wheel assembly includes a covering wheel 310 and a pressing wheel 320. The covering wheel 310 is connected to the lifting unit 210 via a first connecting arm 330. Specifically, one end of the first connecting arm 330 is fixedly connected to the outer side of the lifting unit 210, and the other end is rotatably connected to the covering wheel 310, allowing the covering wheel 310 to rotate at the end of the first connecting arm 330. The pressing wheel 320 is connected to the lifting unit 210 via a second connecting arm 340. Specifically, one end of the second connecting arm 340 is hinged to the outer side of the lifting unit 210, and the other end is rotatably connected to the pressing wheel 320, allowing the pressing wheel 320 to rotate at the end of the second connecting arm 340. Both the first connecting arm 330 and the second connecting arm 340 are inclined towards the ground, allowing the covering wheel 310 and the pressing wheel 320 to contact the ground soil. The first connecting arm 330 is located below the second connecting arm 340, and an elastic component 350 is disposed between the first connecting arm 330 and the second connecting arm 340. The elasticity of the elastic component 350 can act simultaneously on the first connecting arm 330 and the second connecting arm 340, so that both the covering wheel 310 and the pressing wheel 320 can be affected by the elastic force of the elastic component 350, thereby adjusting the pressing pressure on the soil.

[0028] Furthermore, such as Figure 1 and Figure 2As shown, the elastic component 350 is a linear spring including a fixed end 351 and an adjusting end 352. The fixed end 351 is fixedly connected to the first connecting arm 330. The second connecting arm 340 is provided with an adjusting device 360, and the adjusting end 352 cooperates with the adjusting device 360 ​​to change the extension and contraction of the elastic component 350. By changing the extension and contraction of the elastic component 350, i.e., the spring, the magnitude of the spring force is changed, thereby changing the magnitude of the force acting on the first connecting arm 330 and the second connecting arm 340. Specifically, the adjusting device 360 ​​is provided on the upper surface of the second connecting arm 340, and the upper surface of the second connecting arm 340 is provided with an elongated through groove 341, the extending direction of the elongated through groove 341 being consistent with the extending direction of the second connecting arm 340. The adjusting device 360 ​​extends along the length of the second connecting arm 340. The adjusting device 360 ​​includes two adjusting plates disposed on both sides of the through slot 341. Each adjusting plate has multiple fixing slots 361 distributed along the length of the adjusting plate. The adjusting end 352 passes through the through slot 341 and engages with one of the fixing slots 361. The adjusting end 352 is a ring-shaped pull ring, wide enough to fit into the fixing slots 361 on both sides. When adjusting the spring's extension or retraction, simply pull the pull ring to engage it in the fixing slots 361 at different positions.

[0029] There are many mechanical structures that can be used in the lifting assembly 200, such as hydraulic rods, screw-slider structures, etc. However, considering the working environment of the seeder, stability and durability are important considerations. In some embodiments, the lifting assembly 200 includes a drive unit, which is pulsatorically connected to the lifting unit 210. The drive unit drives the lifting unit 210 to move up and down relative to the ground, thereby adjusting the compaction height of the compaction wheel assembly. Specifically, such as... Figure 1 and Figure 2 As shown, the drive unit includes a screw 220 and a rocker arm 230. The rocker arm 230 is connected to one end of the screw 220, and the other end of the screw 220 is threadedly connected to the frame 100. The lifting unit 210 is a lifting arm sleeved on the outside of the screw 220. The rocker arm 230 drives the screw 220 to rotate around its axis, thereby causing the lifting arm to move up and down. The screw 220, rocker arm 230, and lifting arm have a simple and durable structure, suitable for the working environment of the seeder. When it is necessary to adjust the height of the press wheel assembly, the rocker arm 230 is rocked to drive the screw 220 to rotate, thereby causing the lifting arm to rise or fall as the screw 220 rotates.

[0030] Furthermore, to improve the stability of the lifting assembly 200 after adjusting the press roller assembly, it is necessary to limit the lifting assembly 200 to lock the press roller assembly at a designated position. In some embodiments, such as Figure 1 and Figure 3As shown, the lifting assembly 200 is equipped with a limiting device 400, which limits the lifting unit 210 when it is adjusted to a designated position. Specifically, the limiting device 400 includes a limiting screw 410, which is threadedly connected to and passes through the lifting unit 210; the end of the limiting screw 410 abuts against the screw 220 to limit the lifting unit 210. When it is necessary to adjust the height of the lifting unit 210, the limiting screw 410 is rotated in the opposite direction to disengage the end of the limiting screw 410 from the screw 220, and then the height of the lifting unit 210 is adjusted.

[0031] It is understandable that, such as Figures 1-3 As shown, the covering wheel 310 and the compacting wheel 320 are arranged one in front of the other in the direction of travel, with the covering wheel 310 located in front of the compacting wheel 320. The covering wheel 310 covers the seeds with soil after sowing, ensuring that the seeds are properly covered and maintaining soil moisture. The compacting wheel 320 then compacts the soil to a certain extent. Specifically, the covering wheel 310 includes two arc-shaped wheels 311, whose arc-shaped surfaces are arranged opposite each other to form a covering gap, which can gather and cover the soil. A scraper 500 is connected to the first connecting arm 330. The scraper 500 is used to scrape away the soil at the covering gap of the covering wheel 310, which can reduce the resistance of the covering wheel 310 moving forward.

[0032] Another aspect of this application provides a triangular seeder, including the aforementioned press wheel mechanism, which can compact the soil during seeding and driving, and the compaction pressure on the soil is more controllable and easy to adjust.

[0033] In the description of this utility model, it should be noted that the terms "front," "rear," "left," "right," "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] The scope of protection of this utility model is defined only by the claims. Thanks to the teachings of this utility model, those skilled in the art will readily recognize that alternative structures to the disclosed structure can be used as feasible alternative implementations, and that the disclosed implementations can be combined to produce new implementations, which also fall within the scope of the appended claims.

Claims

1. A seeder packer wheel mechanism comprising a frame (100), characterized in that, The frame (100) is provided with a lifting assembly (200), the lifting assembly (200) comprises a lifting unit (210), and the lifting assembly (200) drives the lifting unit (210) to move up and down; the lifting assembly (200) is further provided with a roller group, the roller group is connected with the lifting unit (210); the roller group is connected with an elastic assembly (350) for adjusting the pressure of the roller group on the soil, and the elastic assembly (350) is independently arranged outside the lifting assembly (200).

2. A seeding press wheel mechanism according to claim 1 wherein, The roller group comprises a covering roller (310) and a pressing roller (320), the covering roller (310) is connected with the lifting unit (210) through a first connecting arm (330), and the pressing roller (320) is connected with the lifting unit (210) through a second connecting arm (340); the elastic assembly (350) is arranged between the first connecting arm (330) and the second connecting arm (340).

3. A seeding press wheel mechanism according to claim 2 wherein, The elastic assembly (350) comprises a fixed end (351) and an adjusting end (352), the fixed end (351) is fixedly connected with the first connecting arm (330); the second connecting arm (340) is provided with an adjusting device (360), and the adjusting end (352) cooperates with the adjusting device (360) to change the extension amount of the elastic assembly (350).

4. A seeding press wheel mechanism according to claim 3, wherein, The adjusting device (360) is arranged in the length direction of the second connecting arm (340), the adjusting device (360) is provided with a plurality of fixed grooves (361), and the adjusting end (352) is clamped and fixed with one of the fixed grooves (361).

5. The seed implement downforce mechanism of claim 2, wherein, The lifting assembly (200) comprises a driving unit, the driving unit is in transmission connection with the lifting unit (210), and the driving unit drives the lifting unit (210) to move up and down relative to the ground.

6. A seeding press wheel mechanism according to claim 5 wherein, The driving unit comprises a screw rod (220) and a rocker arm (230), the rocker arm (230) is connected to one end of the screw rod (220), the other end of the screw rod (220) is in threaded connection with the frame (100), the lifting unit (210) is a lifting arm arranged outside the screw rod (220), and the rocker arm (230) drives the screw rod (220) to rotate around the axis to drive the lifting arm to move up and down.

7. A seeding press wheel mechanism according to claim 6 wherein, The lifting assembly (200) is provided with a limiting device (400), and the limiting device (400) limits the lifting unit (210) when the lifting unit (210) is adjusted to a specified position.

8. A seeding press wheel mechanism according to claim 7, wherein, The limiting device (400) comprises a limiting screw rod (410), the limiting screw rod (410) is in threaded connection with the lifting unit (210) and is arranged through the lifting unit (210), and the end of the limiting screw rod (410) abuts against the screw rod (220) to limit the lifting unit (210).

9. The seed drill roller assembly of claim 2, wherein, The covering roller (310) and the pressing roller (320) are arranged in front and back in the advancing direction, and the covering roller (310) is located in front of the pressing roller (320). The covering wheel (310) comprises two arc-shaped wheels (311), arc-shaped surfaces of the two arc-shaped wheels (311) are oppositely arranged and form a covering interval; the first connecting arm (330) is connected with a mud scraping plate (500), and the mud scraping plate (500) is used for scraping off the mud at the covering interval of the covering wheel (310).

10. A delta planter characterized by, The compactor mechanism comprises the compactor mechanism according to any one of claims 1-9.

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