Rooter for improving hob supporting strength by utilizing dead point position

Abstract

The invention discloses a soil turning machine for improving hob supporting strength by utilizing a dead point position, and relates to the technical field of agricultural machinery, the soil turning machine comprises a walking frame, a soil turning driving connecting rod mechanism and a hob mechanism; the soil turning driving connecting rod mechanism is installed at the front end of the walking frame and comprises a connecting rod hinge seat, a first connecting rod part, a second connecting rod part and a telescopic driving cylinder. Through the telescopic control of the telescopic driving cylinder, the first connecting rod part and the second connecting rod part can be collinear and form a dead point under specific conditions, and the supporting strength of the hob is enhanced by utilizing the characteristics of the dead point position. The hob mechanism is installed at the end of the second connecting rod part and can effectively bear the soil reacting force in the soil turning process, and deformation or damage is reduced. By optimizing the design of the connecting rod mechanism and utilizing the mechanical property of the dead point position, the supporting strength of the hob and the stability of soil turning operation are remarkably improved, and meanwhile the problem that a traditional connecting rod mechanism is likely to be stuck or unstable in movement at the dead point position is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, and more specifically, to a soil-turning machine that utilizes the dead center position to improve the support strength of a hob. Background Art

[0002] In agricultural production, soil-turning operation is a basic link in land tillage. Its purpose is to loosen the soil and turn the soil layer to create good conditions for subsequent operations such as sowing and fertilizing. With the development of agricultural mechanization, soil-turning machines have gradually replaced traditional manual and animal-powered soil-turning tools and become important equipment in agricultural production.

[0003] Currently, common soil-turning machines mainly drive the rotation of the soil-turning hob through a mechanical transmission device to achieve the turning of the soil. The soil-turning hob of the soil-turning machine is usually connected to the power source through a linkage mechanism, and the linkage mechanism plays a role in transmitting power and controlling movement. However, there are some deficiencies in the design of the linkage mechanism of the existing soil-turning machines:

[0004] 1. Limited support strength: During the soil-turning process, the soil-turning hob needs to bear a large soil reaction force. When the existing linkage mechanism supports the hob, it often cannot provide sufficient strength and stability, easily causing the hob to deform or be damaged during the soil-turning process, affecting the soil-turning quality and service life.

[0005] 2. Negative impact of the dead center position: There is a dead center position in the movement process of the linkage mechanism, which is caused by the geometric characteristics of the linkage mechanism. At the dead center position, the movement direction of the mechanism changes, and the driving force cannot be effectively transmitted, which may cause the mechanism to jam or move unstably. Existing soil-turning machines usually avoid the influence of the dead center position by adding additional support structures or complex control devices, but this increases the complexity and cost of the equipment.

[0006] 3. The soil-turning efficiency and quality need to be improved: Existing soil-turning machines have deficiencies in aspects such as soil-turning depth and soil-turning uniformity. Insufficient soil-turning depth or non-uniformity will result in poor soil loosening effect, affecting the growth of crops. In addition, existing soil-turning machines cause greater damage to the soil structure during the soil-turning process, which may lead to problems such as soil compaction.

[0007] In summary, there are many problems in the design of the linkage mechanism of the existing soil-turning machines in terms of support strength, dead center position handling, and soil-turning quality. These problems limit the performance improvement and wide application of the soil-turning machines. Therefore, there is an urgent need for a soil-turning machine technical solution that can effectively solve these problems to improve the efficiency and quality of the soil-turning operation and meet the needs of modern agricultural production. Summary of the Invention

[0008] In view of this, the present invention provides a soil-turning machine that utilizes the dead point position to improve the support strength of the hob, aiming to solve the above technical problems.

[0009] To achieve the above object, the present invention adopts the following technical solutions:

[0010] A soil-turning machine that utilizes the dead point position to improve the support strength of the hob, comprising:

[0011] A traveling frame, with traveling drive wheels installed on both the front and rear sides of the traveling frame;

[0012] A soil-turning drive link mechanism, which is installed at the front end of the traveling frame. The soil-turning drive link mechanism includes a link hinge seat, a first link portion, a second link portion, and a telescopic drive cylinder. The link hinge seat is installed at the bottom of the front end of the traveling frame. One end of the first link portion is hinged to the link hinge seat. One end of the second link portion is hinged to the other end of the first link portion. The fixed cylinder of the telescopic drive cylinder is hinged to the upper part of the front end of the traveling frame, and the telescopic end of the telescopic drive cylinder is hinged to the end of the second link portion away from the first link portion. By controlling the telescopic movement of the telescopic drive cylinder, it is possible to make the first link portion and the second link portion collinear. And when the first link portion and the second link portion are collinear and a force is applied to the end of the second link portion away from the first link portion in the direction of its rod body, the hinge point of the first link portion and the second link portion forms a dead point.

[0013] A hob mechanism, which is installed at the end of the second link portion away from the first link portion.

[0014] Through the above technical solutions, the present invention designs a soil-turning drive link mechanism, making the first link portion and the second link portion form a dead point when they are collinear. Utilizing the characteristics of the dead point position, it enhances the support strength of the hob mechanism, thereby improving the stability and reliability of the soil-turning operation, and reducing the deformation or damage of the hob caused by the soil reaction force during the soil-turning process. By controlling the telescopic movement of the telescopic drive cylinder, the positional relationship between the first link portion and the second link portion can be precisely adjusted, enabling the mechanism to withstand greater forces at the dead point position, while avoiding the jamming or unstable movement problems that may occur in the traditional link mechanism at the dead point position.

[0015] Preferably, in the above-mentioned soil-turning machine that utilizes the dead center position to improve the support strength of the hob, the number of the connecting rod hinge seats is two, and they are symmetrically and fixedly arranged on both sides of the front bottom of the walking frame respectively. The first connecting rod part includes two first connecting rod frames, and the two first connecting rod frames are respectively hinged to the two connecting rod hinge seats; the second connecting rod part includes two second connecting rod frames, and the two second connecting rod frames are respectively hinged to the two first connecting rod frames, and the ends of the two second connecting rod frames are fastened into an integral structure through a connecting rod; the telescopic driving cylinder is arranged in the vertical plane where the symmetry axis of the two connecting rod hinge seats is located, and the telescopic end of the telescopic driving cylinder is respectively rotationally connected to the support rods on the two second connecting rod frames through a double hinge joint.

[0016] Preferably, in the above-mentioned soil-turning machine that utilizes the dead center position to improve the support strength of the hob, the hob mechanism includes a hob connecting plate, a hob shaft and a hob driving motor; the number of the hob connecting plates is two, and they are respectively fixedly connected to the outer sides of the two second connecting rod frames; the two ends of the hob shaft are respectively rotationally connected to the two hob connecting plates, and the hob shaft is provided with blades; the hob driving motor is installed on the outer side of one of the hob connecting plates, and the power output shaft of the hob driving motor is connected to one end of the hob shaft through a coupling.

[0017] Preferably, in the above-mentioned soil-turning machine that utilizes the dead center position to improve the support strength of the hob, it further includes a solar power supply mechanism; the solar power supply mechanism includes a slide rail, a slider, a support shaft, a solar panel, a driving connecting rod and an angle adjustment motor; the number of the slide rails is two, and they are respectively fixed on both sides of the top of the walking frame; the number of the sliders is two, and the two sliders are respectively slidably connected to the two slide rails; the support shaft is connected between the two sliders; the lower part of the back plate of the solar panel is sleeved on the support shaft through a hinge seat; one end of the driving connecting rod is hinged to the top of the walking frame, and the other end is hinged to the upper part of the back plate of the solar panel; the angle adjustment motor is installed on the top of the walking frame, and the power end of the angle adjustment motor is connected to the bottom end of the driving connecting rod.

[0018] Preferably, in the above-mentioned soil-turning machine that utilizes the dead center position to improve the support strength of the hob, each walking driving wheel is driven and controlled by a walking driving motor.

[0019] Preferably, in the above-mentioned soil-turning machine that utilizes the dead center position to improve the support strength of the hob, it further includes a ditching mechanism, a seeding mechanism and a soil covering mechanism installed on the walking frame, and the ditching mechanism, the seeding mechanism and the soil covering mechanism are arranged in sequence at the rear end of the soil-turning driving connecting rod mechanism.

[0020] Preferably, in the above-mentioned tiller that utilizes the dead point position to improve the supporting strength of the roller cutter, the furrowing mechanism is connected to the furrow opener through a screw slider structure, and can drive the furrow opener to move up and down.

[0021] Preferably, in the above-mentioned tiller that utilizes the dead point position to improve the supporting strength of the roller cutter, the sowing mechanism includes a seeder bottom shell, a seeding disc, an upper seed bucket and a sowing drive motor; the seeder bottom shell is fixed to the bottom of the traveling frame by a bracket, and the bottom edge of the seeder bottom shell has a sowing port; the seeding disc is rotatably connected to the inside of the seeder bottom shell, and the edge of the seeding disc is evenly distributed with a plurality of shaped holes, and during the rotation of the seeding disc, the shaped holes can correspond to the sowing port, and the shaped holes are used to accommodate a single seed; the upper seed bucket is buckled on the top of the seeder bottom shell to form a feed channel; the sowing drive motor is installed at the bottom of the traveling frame, and the power output shaft of the sowing drive motor is connected to the central axis of the seeding disc through a coupling.

[0022] Preferably, in the above-mentioned tiller that utilizes the dead point position to improve the supporting strength of the roller cutter, it also includes a seed scraper and a seed protection plate fixed to the side wall of the bottom shell of the seeder, the seed scraper is used to put a single seed into the mold hole and push out other seeds, and the seed protection plate is used to protect the seeds.

[0023] Preferably, in the above-mentioned tiller that utilizes the dead point position to improve the support strength of the roller cutter, the covering mechanism is connected to the covering plate via a gear rack structure, and can drive the covering plate to move up and down.

[0024] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a tiller that utilizes the dead point position to improve the support strength of the roller cutter, which has the following beneficial effects:

[0025] 1. Improve the support strength of the roller cutter: By optimizing the design of the connecting rod mechanism and utilizing the characteristics of the dead point position, the support strength of the roller cutter is significantly enhanced, so that it can withstand greater soil reaction force during the soil turning process, reducing the risk of deformation or damage of the roller cutter, thereby improving the soil turning quality and the service life of the equipment.

[0026] 2. Optimize the performance of the connecting rod mechanism: The symmetrical connecting rod mechanism is adopted to enhance the stability and reliability of the equipment. At the same time, through the precise control of the telescopic drive cylinder, the problem of the traditional connecting rod mechanism being stuck or unstable at the dead point is avoided, and the operation efficiency and safety of the equipment are improved.

[0027] 3. Improve soil turning quality: By optimizing the design of the hob mechanism, a more uniform soil turning depth and better soil loosening effect are achieved, creating more ideal conditions for subsequent sowing and fertilization operations. In addition, the efficient power transmission of the hob drive motor further improves the soil turning efficiency.

[0028] 4. Multifunctional integration: The soil turner integrates functions of ditch opening, sowing, and soil covering, realizing an integrated operation from soil turning to sowing and then to soil covering, greatly improving agricultural production efficiency, reducing equipment investment and operation time, and lowering labor intensity.

[0029] 5. Enhanced adjustability: The ditch opening mechanism, sowing mechanism, and soil covering mechanism all have highly adjustable functions, and can flexibly adjust the ditch opening depth, sowing density, and soil covering thickness according to different soil conditions and operation requirements, ensuring the operation quality of each link and having stronger adaptability.

[0030] 6. Energy conservation and environmental protection: The introduction of a solar power supply mechanism reduces the dependence on traditional energy sources, lowers the operation cost of the equipment, and meets the requirements of environmental protection and sustainable development at the same time.

[0031] 7. Improve sowing accuracy: The sowing mechanism realizes precise sowing of seeds through optimizing the design of the seed metering disc and the coordinated action of the seed scraping knife and seed protecting plate, improving the accuracy and consistency of sowing, reducing the phenomena of missed sowing and re-sowing, and enhancing the seed utilization rate and crop yield.

[0032] 8. Enhance soil covering quality: The soil covering mechanism realizes precise adjustment of the soil covering plate through a gear-rack structure, ensuring a uniform soil covering effect, avoiding problems such as low seed germination rate or poor growth caused by uneven soil covering, and further enhancing the overall operation quality.

[0033] 9. Improve equipment flexibility and adaptability: The independent motor control of the walking drive wheels improves the mobility and flexibility of the soil turner, enabling it to better adapt to complex farmland terrains and operation requirements. At the same time, the adjustable angle design of the solar panels enhances the adaptability of the equipment under different lighting conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0035] Figure 1 The attached drawing is a schematic structural diagram of a soil turner provided by the present invention for improving the hob support strength by using the dead center position.

[0036] Figure 2 The attached drawing is a schematic side-sectional structure diagram of a soil-turning machine that uses the dead center position to improve the hob support strength provided by the present invention;

[0037] Figure 3 The attached drawing is a schematic structure diagram of the soil-turning drive link mechanism and the hob mechanism part provided by the present invention;

[0038] Figure 4 The attached drawing is a rear view of the solar power supply mechanism provided by the present invention;

[0039] Figure 5 The attached drawing is a schematic structure diagram of the ditching mechanism provided by the present invention;

[0040] Figure 6 The attached drawing is a schematic structure diagram of the seeding mechanism provided by the present invention;

[0041] Figure 7 The attached drawing is an exploded structure diagram of the seeding mechanism provided by the present invention;

[0042] Figure 8 The attached drawing is a main view of a partial section of the seeding mechanism provided by the present invention;

[0043] Figure 9 The attached drawing is a top view of a partial section of the seeding mechanism provided by the present invention;

[0044] Figure 10 The attached drawing is a schematic structure diagram of the seed metering disc provided by the present invention;

[0045] Figure 11 The attached drawing is a schematic structure diagram of the seeding mechanism provided by the present invention from a bottom view angle;

[0046] Figure 12 The attached drawing is a schematic diagram of the working area of the seed metering disc provided by the present invention;

[0047] Figure 13 The attached drawing is a schematic structure diagram of the soil covering mechanism provided by the present invention.

[0048] Wherein:

[0049] 1 - Traveling frame;

[0050] 11 - Traveling drive wheel; 12 - Traveling drive motor;

[0051] 2 - Soil-turning drive link mechanism;

[0052] 21 - Link hinge seat; 22 - First link part; 221 - First link frame; 23 - Second link part; 231 - Second link frame; 232 - Connecting rod; 233 - Support rod; 24 - Telescopic drive cylinder; 241 - Double hinge joint; 25 - Dead center;

[0053] 3-Hob mechanism;

[0054] 31-Hob connecting plate; 32-Hob shaft; 321-Cutter blade; 33-Hob drive motor;

[0055] 4-Solar power supply mechanism;

[0056] 41-Rail; 42-Slider; 43-Support shaft; 44-Solar panel; 45-Driving link; 46-Angle adjustment motor;

[0057] 5-Ditching mechanism;

[0058] 51-Ditcher; 52-Vertical plate; 53-Screw rod; 54-Ditching action drive motor; 55-Vertical guide rod; 56-Moving frame; 57-Connecting frame;

[0059] 6-Seeding mechanism;

[0060] 61-Seeder bottom shell; 611-Seeding opening; 62-Seed metering disc; 621-Hole; 622-Ring groove; 623-Guide rib; 63-Upper seed hopper; 631-Feed channel; 64-Seeding drive motor; 65-Bracket; 66-Seed scraping knife; 67-Seed protecting plate; 68-Guiding disc; 681-Spiral guiding groove; 69-Missing seed guiding shell;

[0061] 7-Soil covering mechanism;

[0062] 71-Soil covering plate; 72-Mounting seat; 73-Gear; 74-Soil covering action drive motor; 75-Rack. Detailed implementation manners

[0063] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0064] See attached Figure 1 to attached Figure 3 , the embodiments of the present invention disclose a rotary tiller that uses the dead point position to improve the hob support strength, including:

[0065] Traveling frame 1, and traveling drive wheels 11 are installed on both the front and rear sides of the traveling frame 1;

[0066] The soil-turning drive linkage mechanism 2 is installed at the front end of the traveling frame 1. The soil-turning drive linkage mechanism 2 includes a linkage hinge seat 21, a first linkage part 22, a second linkage part 23, and a telescopic drive cylinder 24. The linkage hinge seat 21 is installed at the bottom of the front end of the traveling frame 1. One end of the first linkage part 22 is hinged to the linkage hinge seat 21. One end of the second linkage part 23 is hinged to the other end of the first linkage part 22. The fixed cylinder of the telescopic drive cylinder 24 is hinged to the upper part of the front end of the traveling frame 1, and the telescopic end of the telescopic drive cylinder 24 is hinged to the end of the second linkage part 23 away from the first linkage part 22. By controlling the telescopic movement of the telescopic drive cylinder 24, the first linkage part 22 and the second linkage part 23 can be made collinear. And when the first linkage part 22 and the second linkage part 23 are collinear and a force is applied to the rod body direction from the end of the second linkage part 23 away from the first linkage part 22, a dead point 25 is formed at the hinge point of the first linkage part 22 and the second linkage part 23.

[0067] The hob mechanism 3 is installed at the end of the second linkage part 23 away from the first linkage part 22.

[0068] To further optimize the above technical solution, the number of the linkage hinge seats 21 is two, and they are symmetrically fixed on both sides of the bottom of the front end of the traveling frame 1 respectively. The first linkage part 22 includes two first linkage frames 221, and the two first linkage frames 221 are respectively hinged to the two linkage hinge seats 21. The second linkage part 23 includes two second linkage frames 231, and the two second linkage frames 231 are respectively hinged to the two first linkage frames 221, and the ends of the two second linkage frames 231 are fastened into an integral structure by a connecting rod 232. The telescopic drive cylinder 24 is arranged in the vertical plane where the axis of symmetry of the two linkage hinge seats 21 is located, and the telescopic end of the telescopic drive cylinder 24 is respectively rotationally connected to the support rods 233 on the two second linkage frames 231 through a double hinge joint 241.

[0069] The number of the linkage hinge seats 21 is two, and they are symmetrically fixed on both sides of the bottom of the front end of the traveling frame 1. The first linkage part 22 and the second linkage part 23 also adopt a symmetrical structure. This symmetrical design can make the soil-turning machine more evenly stressed during operation, further improving the overall stability and reliability. The two second linkage frames 231 of the second linkage part 23 are fastened into an integral structure by a connecting rod 232. This design enhances the overall strength and rigidity of the second linkage part, enabling it to better withstand the soil reaction force during the soil-turning operation and extending the service life of the equipment. The telescopic drive cylinder 24 is arranged in the vertical plane where the axis of symmetry of the two linkage hinge seats 21 is located, and its telescopic end is respectively rotationally connected to the support rods 233 on the two second linkage frames 231 through a double hinge joint 241. This connection method can ensure the smoothness and efficiency of power transmission, while reducing power loss caused by friction or wear at the connection part.

[0070] In order to further optimize the above technical solution, the hob mechanism 3 includes a hob connecting plate 31, a hob shaft 32 and a hob driving motor 33; there are two hob connecting plates 31, which are respectively fixedly connected to the outer sides of the two second link frames 231; both ends of the hob shaft 32 are rotatably connected to the two hob connecting plates 31, and the hob shaft 32 is provided with blades 321; the hob driving motor 33 is installed on the outer side of one hob connecting plate 31, and the power output shaft of the hob driving motor 33 is connected to one end of the hob shaft 32 through a coupling.

[0071] The hob mechanism 3 includes a hob connecting plate 31, a hob shaft 32 and a hob driving motor 33. This design makes the structure of the hob mechanism more compact, facilitating installation and maintenance. The blades 321 on the hob shaft 32 can effectively turn the soil, and the power output shaft of the hob driving motor 33 is connected to the hob shaft 32 through a coupling, ensuring reliable power transmission and improving the soil-turning efficiency. By optimizing the structural design of the hob mechanism, the soil-turning depth can be made more uniform, and the soil loosening effect is better, thus creating more ideal conditions for subsequent operations such as sowing and fertilizing, and improving the overall quality of agricultural production.

[0072] See the appendix Figure 4 It further includes a solar power supply mechanism 4; the solar power supply mechanism 4 includes a slide rail 41, a slider 42, a support shaft 43, a solar panel 44, a driving link 45 and an angle adjustment motor 46; there are two slide rails 41, which are respectively fixed on both sides of the top of the walking frame 1; there are two sliders 42, and the two sliders 42 are respectively slidably connected to the two slide rails 41; the support shaft 43 is connected between the two sliders 42; the lower part of the back plate of the solar panel 44 is sleeved on the support shaft 43 through a hinge seat; one end of the driving link 45 is hinged to the top of the walking frame 1, and the other end is hinged to the upper part of the back plate of the solar panel 44; the angle adjustment motor 46 is installed on the top of the walking frame 1, and the power end of the angle adjustment motor 46 is connected to the bottom end of the driving link 45.

[0073] The addition of the solar power supply mechanism 4 enables the soil-turning machine to have the ability to be powered by solar energy, reducing the dependence on traditional energy, lowering the operating cost of the equipment, and also conforming to the concepts of environmental protection and sustainable development. By driving the driving link 45 with the angle adjustment motor 46, the angle of the solar panel 44 can be adjusted so that it can automatically adjust to the best angle according to different lighting conditions, improving the utilization efficiency of solar energy and ensuring stable power supply of the equipment in different environments. The solar panel 44 is connected to the walking frame 1 through the slide rail 41 and the slider 42. This sliding connection method enables the position of the solar panel to be adjusted according to needs, enhancing the flexibility and adaptability of the equipment and being able to better meet the requirements in different operating scenarios.

[0074] To further optimize the above technical solution, each traveling drive wheel 11 is driven and controlled by a traveling drive motor 12. This independent drive method can achieve precise control of each traveling drive wheel, improve the mobility and flexibility of the soil-turning machine, enabling it to better adapt to complex farmland terrains and operation requirements. For example, when turning or passing over uneven ground, it can travel more smoothly.

[0075] See the appendix Figure 2 , it further includes a ditching mechanism 5, a seeding mechanism 6, and a soil covering mechanism 7 installed on the traveling frame 1. The ditching mechanism 5, the seeding mechanism 6, and the soil covering mechanism 7 are arranged in sequence at the rear end of the soil-turning drive link mechanism 2. The soil-turning machine not only has the function of turning the soil, but also integrates the ditching mechanism 5, the seeding mechanism 6, and the soil covering mechanism 7, realizing the integration of operations such as soil turning, ditching, seeding, and soil covering, greatly improving agricultural production efficiency, reducing equipment investment and operation time, and reducing labor intensity. The ditching mechanism 5, the seeding mechanism 6, and the soil covering mechanism 7 are arranged in sequence at the rear end of the soil-turning drive link mechanism 2. This layout makes the operation process smoother, enables the mechanisms to cooperate closely with each other, realizes continuous and efficient operation, and improves the overall operation quality and efficiency.

[0076] See the appendix Figure 5 , the ditching mechanism 5 is connected to the ditching tool 51 through a lead screw-slider structure and can drive the ditching tool 51 to move up and down.

[0077] Specifically, the ditching mechanism 5 further includes: a vertical plate 52, a lead screw 53, a ditching action drive motor 54, a vertical guide rod 55, a moving frame 56, and a connecting frame 57; the vertical plate 52 is fixed inside the traveling frame 1, and both ends of the lead screw 53 are rotatably connected to the bearing seats on the front plate surface of the vertical plate 52; the ditching action drive motor 54 is installed on the top of the traveling frame 1, and the power output shaft of the ditching action drive motor 54 is connected to the top end of the lead screw 53 through a coupling. The number of vertical guide rods 55 is two, and the two vertical guide rods 55 are connected to the front plate surface of the vertical plate 52 and are symmetrically arranged on both sides of the lead screw 53. The middle part of the moving frame 56 is threadedly connected to the lead screw 53, and both sides of the moving frame 56 are respectively slidably connected to the two vertical guide rods 55; the connecting frame 57 is fixed on the moving frame 56, and the bottom of the connecting frame 57 is fixedly connected to the ditching tool 51.

[0078] When it is necessary to adjust the height of the ditching tool 51, control the ditching action drive motor 54 to drive the lead screw 53 to rotate, which can drive the overall structure of the moving frame 56 and the connecting frame 57 to move up and down.

[0079] See the appendix Figure 6 to the appendix Figure 10, the seeding mechanism 6 includes a seeding bottom shell 61, a seed metering disc 62, a top seed hopper 63 and a seeding drive motor 64; the seeding bottom shell 61 is fixed to the bottom of the traveling vehicle frame 1 through a bracket 65, and the bottom edge of the bottom surface of the seeding bottom shell 61 has a seeding opening 611; the seed metering disc 62 is rotatably connected inside the seeding bottom shell 61, and a plurality of mold holes 621 are evenly distributed along the edge of the seed metering disc 62. During the rotation of the seed metering disc 62, the mold holes 621 can correspond to the seeding opening 611, and the mold holes 621 are used to accommodate single seeds; the top seed hopper 63 is buckled on the top of the seeding bottom shell 61 and forms a feed channel 631; the seeding drive motor 64 is installed at the bottom of the traveling vehicle frame 1, and the power output shaft of the seeding drive motor 64 is connected to the central axis of the seed metering disc 62 through a coupling.

[0080] To further optimize the above technical solution, the seed metering disc 62 is a cone structure with a convex middle part. An annular groove 622 is formed at the edge of the seed metering disc 62, and the mold holes 621 are located in the annular groove 622. To improve the seed introduction and distribution effect, evenly spaced guiding ridges 623 are arranged along the inner circle of the annular groove 622 of the seed metering disc 62. The guiding ridges 623 are arranged obliquely relative to the radius of the seed metering disc 62. The seeds falling on the upper surface of the seed metering disc 62 are guided by the cone structure, first enter the annular groove 622 through the gaps between the guiding ridges 623, then enter the mold holes 621, and finally are discharged through the seeding opening 611.

[0081] To further improve the guiding effect of the seeds, a guiding disc 68 is also provided between the seeding bottom shell 61 and the top seed hopper 63. The guiding disc 68 has a spiral guiding groove 681. The seeds entering from the seeding bottom shell 61 finally fall on the seed metering disc 62 through the spiral guiding groove 681 on the guiding disc 68, and the seeds can be transported more orderly.

[0082] To further optimize the above technical solution, it also includes a seed scraping knife 66 and a seed protecting plate 67 fixed to the side wall of the seeding bottom shell 61. The seed scraping knife 66 is used to put single seeds into the mold holes 621 and dial out other seeds, and the seed protecting plate 67 is used to protect the seeds.

[0083] When the seeds enter the seed metering disc 62 from the top seed hopper 63, the seed metering disc 62 is driven to rotate by the seeding drive motor 64. The seed scraping knife 66 puts single seeds into the mold holes 621 and dial out other seeds. When the mold holes 621 with seeds correspond to the seeding opening 611, the seeds fall out.

[0084] See attached Figure 11 , a seed leakage guiding shell 69 is installed on the seeding opening 611.

[0085] The seeding process of this embodiment is as Figure 12 shown.

[0086] In the working state, along with the soil loosening process and the ditching process, the seeding mechanism 6 starts to rotate and drive under the drive of the seeding drive motor 64. Seeds are previously put into the upper seed hopper 63. Under the action of the spiral guiding groove 681 on the guiding disk 68, the seeds enter the seed dropping area, completing the seed dropping process (I).

[0087] Under the action of centrifugal force, they are dispersed onto the seed metering disk 62. The guiding ridges 623 on the seed metering disk 62 separate the aggregated population into individual seeds, and then enter the annular groove 622 at the outer diameter edge of the seed metering disk 62. Some seeds enter the die holes 621, and the remaining seeds are randomly distributed in other areas of the seed metering disk 62, completing the seed filling process (II).

[0088] With the rotation of the seed metering disk 62, the die holes 621 and the annular groove 622 carry the seeds and gradually enter the seed cleaning area. The seed scraping knife 66 scrapes off the excess seeds, leaving only a single seed in the die hole 621, completing the seed cleaning process (III).

[0089] With the rotation of the seed metering disk 62, it assists the die holes 621 to enter the seed protection area. The die holes 621 rotate to the lower part of the seed protection plate 67. The seeds in the die holes 621 are kept in a single state in the hole groove under the protection of the seed protection plate 67 without being interfered by the outside, completing the seed protection process (IV).

[0090] Continuing to rotate, the seed metering disk 62 enters the seed dropping area. The die holes 621 and the seeding opening 611 are in the same vertical position. The single seed in the empty groove is exposed and is dropped into the pre-dug ground hole under the guidance of the seed leakage guiding shell 69.

[0091] In this embodiment, taking mung beans as an example, it is found that the major diameter of mung beans is about 4.5 mm. The die holes 621 meet the single mung bean seed filling requirement, and the seed leakage rate reaches the lowest. Under the condition that the operating speed and plant spacing requirements of the seeder remain unchanged, if the number of die holes 621 is increased, the required rotational speed of the seed metering disk 62 will decrease accordingly, and to a certain extent, the seed filling effect can be appropriately improved.

[0092] Simplify the force analysis of the seeds. Taking a single seed as the research object and ignoring the influence between the seed groups, when the seeds are moving on the horizontal disk at the critical rotational speed, the force state of the seeds should satisfy:

[0093]

[0094] In the formula: F is the centrifugal force received by the seeds, unit N; F f is the frictional force of the seeds on the horizontal disk, unit N; m is the mass of mung beans, unit kg; μ is the friction coefficient between mung beans and the seed metering disk, which is 0.01; w is the angular velocity of the seed metering disk, unit rad / s; r is the radius of the seed metering disk, unit mm.

[0095] When the rotational speed of the seed metering device 62 is between 4 and 8 r / min, as the rotational speed gradually increases, the qualified rate of seed metering begins to decline, and the higher the rotational speed, the faster the qualified rate decreases; the missed seeding rate begins to increase, and the higher the rotational speed, the faster the missed seeding rate increases; the multiple seeding rate gradually decreases and gradually slows down. After conducting multiple experiments and considering various factors such as the qualified rate of seed metering, the missed seeding rate, and the multiple seeding rate, 6 r / min is selected, and the seed metering performance is the best.

[0096] According to the structure of the seed metering device, the seed protecting plate 67 is designed as an arc-shaped seed protecting plate, which is convenient for fixedly installing one side of it on the bottom shell 61 of the seeder, and at the same time, the other side can also be attached to the seed metering disc 62. According to the literature, the horizontal disc type seed metering device has the advantage of a long filling stroke. When designing the structure of the seed protecting plate, it should not be too long, as this will reduce the length of the filling stroke. As described above, there are 20 type holes 621 provided on the seed metering disc 62. Therefore, when designing the seed protecting plate 67, the central angle occupied by 1 type hole is selected as a parameter, that is, the central angle of the seed protecting plate 67 is 18°.

[0097] Since the measured height of the whole vehicle is 0.2 m, assuming free fall motion, the time for the seeds to fall from the seed metering disc 62 can be calculated. Through this time, more parameters can be deduced:

[0098] ; ; ;

[0099] We assume that a seed drops from the seed metering disc every 0.2 s. According to the plant spacing of 15 cm for each seed, the vehicle speed is obtained as:

[0100] ;

[0101] In this embodiment, there are 22 holes evenly distributed on the seed metering disc. Then the angle for each rotation of a hole is:

[0102] ; ;

[0103] Because it is a solid disc, its moment of inertia is:

[0104] ;

[0105] Without considering friction, the torque required by the motor is:

[0106] ; ;

[0107] See Appendix Figure 13, the soil covering mechanism 7 is connected to the soil covering plate 71 through a gear-rack structure and can drive the soil covering plate 71 to move up and down.

[0108] Specifically, the soil covering mechanism 7 further includes a mounting seat 72, a gear 73, a soil covering action driving motor 74, and a rack 75; the mounting seat 72 is installed inside the traveling vehicle frame 1, the gear 73 is rotatably connected to the top surface of the mounting seat 72, the soil covering action driving motor 74 is installed on the top surface of the mounting seat 72, and the power output shaft of the soil covering action driving motor 74 is connected to the central axis of the gear 73 through a coupling. The rack 75 is slidably connected to the vertical rod of the traveling vehicle frame 1 through a sliding seat, the rack 75 is meshed with the gear 73 through helical teeth, and the bottom end of the rack 75 is connected to the soil covering plate 71.

[0109] When it is necessary to adjust the height of the soil covering plate 71, control the soil covering action driving motor 74 to drive the gear 73 to rotate, and then the overall structure of the rack 75 and the soil covering plate 71 can be driven to move up and down.

[0110] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0111] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tiller that utilizes the dead point position to improve the support strength of the roller cutter, characterized in that: include: A traveling frame (1), wherein traveling driving wheels (11) are mounted on both the front and rear sides of the traveling frame (1); A soil turning driving link mechanism (2), the soil turning driving link mechanism (2) being mounted on the front end of the traveling frame (1), and the soil turning driving link mechanism (2) comprising a link articulated seat (21), a first link portion (22), a second link portion (23) and a telescopic driving cylinder (24); the link articulated seat (21) being mounted on the front end bottom of the traveling frame (1), one end of the first link portion (22) being articulated to the link articulated seat (21), one end of the second link portion (23) being articulated to the other end of the first link portion (22), and a fixed cylinder of the telescopic driving cylinder (24) being articulated to the traveling frame (1) is hinged at the upper front end, the telescopic end of the telescopic drive cylinder (24) is hinged to an end of the second link part (23) away from the first link part (22), and the first link part (22) and the second link part (23) can be collinear by telescopic control of the telescopic drive cylinder (24), and when the first link part (22) and the second link part (23) are collinear and the end of the second link part (23) away from the first link part (22) exerts an action in the direction of the rod body, the hinge point of the first link part (22) and the second link part (23) forms a dead point (25); A hob mechanism (3), wherein the hob mechanism (3) is mounted on an end of the second connecting rod portion (23) away from the first connecting rod portion (22).

2. A tiller that utilizes the dead point position to improve the support strength of the roller cutter according to claim 1, characterized in that: The number of the connecting rod articulated seats (21) is two and they are symmetrically fixed on both sides of the bottom of the front end of the traveling frame (1); the first connecting rod portion (22) comprises two first connecting rod frames (221), the two first connecting rod frames (221) are respectively articulated to the two connecting rod articulated seats (21); the second connecting rod portion (23) comprises two second connecting rod frames (231), the two second connecting rod frames (231) are respectively articulated to the two first connecting rod frames (221), and the ends of the two second connecting rod frames (231) are fastened to form an integrated structure via a connecting rod (232); the telescopic drive cylinder (24) is arranged in a vertical plane where the symmetry axes of the two connecting rod articulated seats (21) are located, and the telescopic end of the telescopic drive cylinder (24) is rotatably connected to the support rods (233) on the two second connecting rod frames (231) via a bidirectional articulated joint (241).

3. A tiller that utilizes the dead point position to improve the support strength of the roller cutter according to claim 2, characterized in that: The hob mechanism (3) comprises a hob connecting plate (31), a hob shaft (32) and a hob drive motor (33); the number of the hob connecting plates (31) is two, and they are respectively fixedly connected to the outer sides of two second connecting rod frames (231); the two ends of the hob shaft (32) are respectively rotatably connected to the two hob connecting plates (31), and the hob shaft (32) has a blade (321); the hob drive motor (33) is mounted on the outer side of one of the hob connecting plates (31), and the power output shaft of the hob drive motor (33) is connected to one end of the hob shaft (32) via a coupling.

4. A tiller that utilizes the dead point position to improve the support strength of the roller cutter according to any one of claims 1 to 3, characterized in that: The invention also comprises a solar power supply mechanism (4); the solar power supply mechanism (4) comprises a slide rail (41), a slider (42), a support shaft (43), a solar panel (44), a driving connecting rod (45) and an angle adjustment motor (46); the number of the slide rails (41) is two and they are fixed to both sides of the top of the traveling frame (1); the number of the sliders (42) is two, and the two sliders (42) are respectively slidably connected to the two slide rails (41); the support shaft (43) is connected between the two sliders (42); the lower part of the back plate of the solar panel (44) is arranged on the support shaft (43) through an articulated seat; one end of the driving connecting rod (45) is hinged to the top of the traveling frame (1), and the other end is hinged to the upper part of the back plate of the solar panel (44); the angle adjustment motor (46) is installed on the top of the traveling frame (1), and the power end of the angle adjustment motor (46) is connected to the bottom end of the driving connecting rod (45).

5. The tiller that utilizes the dead point position to improve the support strength of the roller cutter according to claim 1, characterized in that: Each of the travel drive wheels (11) is driven and controlled by a travel drive motor (12).

6. The tiller that utilizes the dead point position to improve the support strength of the roller cutter according to claim 1, characterized in that: It also comprises a furrowing mechanism (5), a sowing mechanism (6) and a soil covering mechanism (7) mounted on the traveling frame (1), wherein the furrowing mechanism (5), the sowing mechanism (6) and the soil covering mechanism (7) are arranged in sequence at the rear end of the soil turning driving connecting rod mechanism (2).

7. A tiller that utilizes the dead point position to improve the support strength of the roller cutter according to claim 6, characterized in that: The furrowing mechanism (5) is connected to the furrow opener (51) via a screw slider structure, and is capable of driving the furrow opener (51) to move up and down.

8. The tiller that utilizes the dead point position to improve the support strength of the roller cutter according to claim 6, characterized in that: The sowing mechanism (6) comprises a seeder bottom shell (61), a seeding disc (62), an upper seed bucket (63) and a sowing drive motor (64); the seeder bottom shell (61) is fixed to the bottom of the traveling frame (1) via a bracket (65), and the bottom edge of the seeder bottom shell (61) has a sowing opening (611); the seeding disc (62) is rotatably connected to the inside of the seeder bottom shell (61), and the edge of the seeding disc (62) is evenly distributed with a plurality of shaped holes (621). During the rotation of the seed disc (62), the shaped hole (621) can correspond to the sowing opening (611), and the shaped hole (621) is used to accommodate a single seed; the upper seed bucket (63) is buckled on the top of the seeder bottom shell (61) to form a feed channel (631); the sowing drive motor (64) is installed at the bottom of the traveling frame (1), and the power output shaft of the sowing drive motor (64) is connected to the central axis of the seed disc (62) through a coupling.

9. A tiller utilizing the dead point position to improve the support strength of the roller cutter according to claim 8, characterized in that: It also includes a seed scraper (66) and a seed protection plate (67) fixed to the side wall of the bottom shell (61) of the seeder, wherein the seed scraper (66) is used to put a single seed into the shaped hole (621) and to remove other seeds, and the seed protection plate (67) is used to protect the seeds.

10. The tiller that utilizes the dead point position to improve the support strength of the roller cutter according to claim 6, characterized in that: The soil covering mechanism (7) is connected to the soil covering plate (71) via a gear rack structure, and is capable of driving the soil covering plate (71) to move up and down.

Images