An S-shaped spring tooth for a cultivator based on bionic technology

Abstract

The present invention relates to the technical field of agricultural tillage equipment, and in particular to an S-shaped spring tine for a tillage machine based on bionic technology. The spring tine comprises: a tine body, the tine body being provided with a fixing hole for securing the tine body; a tooth tip connected to one end of the tine body; and a protruding structure on the outer side of the tooth tip for reducing adhesion and desorption; a switching assembly, the switching assembly comprising a rotating mechanism for driving the tooth tip to rotate and a locking mechanism for locking the tooth tip after the rotating mechanism completes rotation; and an adjustment assembly, the adjustment assembly comprising an energy absorption mechanism and a shock-absorbing mechanism for absorbing vibration energy during use and transferring it to the shock-absorbing mechanism for reducing vibration experienced by the tooth tip. The present invention is suitable for heavy clay soils in the Northeast, rocky loam in the Northwest, and soil types in the South. The switching assembly allows digging on all sides of the tooth tip, effectively extending the service life of the tooth tip.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural engineering cultivator equipment, in particular to an S-shaped spring tooth of a cultivator based on bionic technology. Background Art

[0002] my country's potato industry is also expanding and experiencing rapid development. The number of companies using cassava as a raw material is increasing, and demand for potatoes is skyrocketing. Therefore, the development of the potato industry must also follow the trend of high-quality development. It is crucial to develop the potato industry in accordance with local conditions, optimize the structure of my country's potato planting industry, and improve the innovation and upgrading of potato-related machinery and equipment.

[0003] Potato tubers require a loose soil environment and adequate nutrients to grow. Intertillage and weeding not only increases soil aeration, conserves moisture, and protects against drought, creating a favorable living environment, but also removes weeds, preventing them from competing with potato seedlings for nutrients and ensuring their growth. During tillage, the S-shaped tines of a cultivator can adhere to the moist soil, creating significant tillage resistance. Friction with hard particles or protrusions in the soil can cause wear, abrasions, deformation, and damage, significantly shortening the machine's service life.

[0004] At the same time, existing cultivators' S-shaped spring tines do not operate ideally in heavy, compacted soils. They cannot effectively loosen the soil, resulting in poor weeding effectiveness. Excessive resistance can damage the machine, and the spring tine tips are prone to wear and damage, affecting the quality of potato tillage. Potato tillage and weeding are labor-intensive, demanding, and time-consuming manual labor. Summary of the Invention

[0005] The purpose of the present invention is to provide an S-shaped spring tooth for a cultivator based on bionic technology to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A cultivator S-shaped spring tine based on bionic technology, comprising:

[0008] A spring tooth body, wherein the spring tooth body is provided with a fixing hole for fixing the spring tooth body, one end of the spring tooth body is connected to a tooth tip, and a protrusion mechanism for reducing adhesion and desorption is provided on the outer side of the tooth tip;

[0009] a switching assembly, the switching assembly comprising a rotating mechanism and a locking mechanism, the rotating mechanism being used to drive the tooth tip to rotate, and the locking mechanism being used to lock the tooth tip after the rotating mechanism completes the rotation of the tooth tip; and

[0010] The adjusting component includes an energy absorbing mechanism and a shock absorbing mechanism. The energy absorbing mechanism is used to absorb the vibration energy when the tooth tip vibrates and input it into the shock absorbing mechanism. The shock absorbing mechanism is used to reduce the vibration suffered by the tooth tip.

[0011] Preferably, the spring tooth body is an S-shaped structure.

[0012] Preferably, the entire tooth tip is a shape fitting based on the mole claw curve.

[0013] Preferably, the protrusion mechanism is a plurality of longitudinal corrugated blocks, and each of the longitudinal corrugated blocks is provided with a plurality of spherical crown convex hulls.

[0014] Preferably, sawtooth strips are symmetrically provided on both sides of the tooth tip.

[0015] Preferably, the spring tooth body is provided with a mounting hole, and the rotating mechanism includes a telescopic mounting tube, a pressing block, a rotating block 1, a rotating block 2, a return spring 1 and a return spring 2, the telescopic mounting tube is arranged in the mounting hole, the telescopic mounting tube is provided with a mounting cavity, the rotating block 1 is arranged in the mounting cavity, the rotating block 2 is connected to the tooth tip, the pressing block is arranged through the rotating block 1, the two ends of the return spring 1 are respectively connected to the rotating block 1 and the pressing block, and the two ends of the return spring 2 are respectively connected to the side wall of the mounting cavity and the rotating block 2, and the pressing block is used to drive the rotating block 2 to rotate.

[0016] Preferably, the rotating block 1 is provided with four clamping grooves, and four clamping blocks are arranged around the bottom of the rotating block 2 corresponding to the clamping grooves. By pressing the pressing block, the clamping blocks are clamped in different clamping grooves, thereby driving the rotating block 2 to rotate.

[0017] Preferably, the locking mechanism includes a locking rod, a locking spring and a locking block, the locking rod is arranged on the pressing block, the two ends of the locking spring are respectively connected to the locking rod and the locking block, and the rotating block 2 is provided with a locking groove, and the locking block is inserted into the locking groove through the locking spring to limit the movement of the rotating block 2.

[0018] Preferably, the shock absorbing mechanism includes a telescopic rod and a shock absorbing spring, the spring tooth body is provided with a limiting groove to prevent the telescopic rod from shaking, the telescopic rod is arranged in the limiting groove, the two ends of the telescopic rod are respectively connected to the telescopic mounting tube and the tooth tip, and the shock absorbing spring is arranged inside the telescopic rod.

[0019] Preferably, the telescopic rod includes an inner tube, an outer tube and a pressure relief valve, an air cavity is provided at the connection portion between the inner tube and the outer tube, the energy absorption mechanism includes a one-way air valve 1 and a one-way air valve 2, the one-way air valve 1 is provided on the outer tube and is used to allow external air to flow into the air cavity in one direction only, the one-way air valve 2 is provided on the inner tube and is used to allow the air in the air cavity to flow into the interior of the outer tube in one direction only, and the pressure relief valve is provided on the outer tube.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) The present invention is suitable for heavy clay soil in the Northeast, rocky loam in the Northwest, and soil types in the South. When in use, the tooth tip can be driven to rotate by a switching component and locked by a locking mechanism after the rotation is completed, thereby adjusting the working position of the tooth tip. As a result, the tooth tip of the present invention can be adjusted in angle and the working angle and working position of the tooth tip can be switched, thereby digging and cutting the soil and plant roots. At the same time, the setting of the switching component allows all surfaces of the tooth tip to be used for digging, effectively improving the service life of the tooth tip and being highly practical.

[0022] (2) When the tooth tip vibrates, the energy absorbing mechanism is set to store the vibration energy, and then cooperates with the shock absorbing mechanism to reduce the vibration of the tooth tip, thereby increasing the service life of the tooth tip;

[0023] (3) The present invention is based on the theory of engineering bionics and is inspired by the soil digging of soil animals such as moles. The soil-contacting part of the potato cultivator's spring teeth is biomimetic reshaped (the overall shape of the tooth tip is based on the curve fitting of the mole's claws) to improve its drag-reducing and soil-crushing performance. Based on the characteristic that the shell of the woodlice is not easily sticky to the soil, the surface structure of the spring tooth tip is biomimetic designed to achieve the effect of reducing adhesion and desorption. Based on the fact that the mantis has a sharp serrated structure on its forelegs, which can effectively cut the stems and leaves of plants, the edges on both sides of the tooth tip are biomimetic designed to achieve the effect of effectively cutting the roots of weeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the axial structure of the present invention Figure 1 ;

[0025] Figure 2 Schematic diagram of the axial structure of the present invention Figure 2 ;

[0026] Figure 3 This is a schematic diagram of the axial structure of the spring tooth main body of the present invention;

[0027] Figure 4 This is a schematic diagram of the tooth tip axial structure of the present invention;

[0028] Figure 5This is a schematic diagram of the axial structure of the protrusion mechanism of the present invention;

[0029] Figure 6 This is a schematic diagram of the connection structure between the tooth tip and the telescopic rod of the present invention;

[0030] Figure 7 This is a schematic cross-sectional view of the connection between the telescopic mounting tube and the tooth tip of the present invention;

[0031] Figure 8 This is a schematic diagram of the two-axis structure of the rotating block of the present invention;

[0032] Figure 9 This is a schematic structural diagram of the rotating block of the present invention from one axis;

[0033] Figure 10 This is a schematic cross-sectional structural diagram of a rotating block according to the present invention;

[0034] Figure 11 This is a schematic diagram of the connection structure of the inner tube and the outer tube of the present invention.

[0035] In the figure: 1 spring tooth body, 2 fixing hole, 3 tooth tip, 4 longitudinal corrugated block, 5 convex bump, 6 serrated bar, 7 telescopic mounting tube, 8 pressing block, 9 rotating block 1, 10 rotating block 2, 11 return spring 1, 12 return spring 2, 13 locking rod, 14 locking spring, 15 locking block, 16 shock-absorbing spring, 17 inner tube, 18 outer tube, 19 pressure relief valve, 101 limiting groove, 901 clamping groove, 1001 clamping block, 1002 locking groove, 1701 air cavity, 1702 one-way air valve 2, 1801 one-way air valve 1, 1802 mounting ring. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figure 1-11 , the present invention provides a technical solution:

[0038] A cultivator S-shaped spring tooth based on bionic technology, as shown in the attached manual Figure 1 Shown, including:

[0039] The spring tooth body 1 is used to install the tooth tip 3. The spring tooth body 1 is provided with a fixing hole 2 for fixing the spring tooth body 1. The fixing hole 2 is used to install the spring tooth body 1. One end of the spring tooth body 1 is connected to the tooth tip 3. The tooth tip 3 is used for excavating the soil. A protrusion mechanism for reducing adhesion and desorption is provided on the outside of the tooth tip 3;

[0040] A switching assembly, the switching assembly including a rotating mechanism and a locking mechanism, the rotating mechanism is used to drive the tooth tip 3 to rotate, and the locking mechanism is used to lock the tooth tip 3 after the rotating mechanism completes the rotation of the tooth tip 3; and

[0041] The adjusting component includes an energy absorbing mechanism and a shock absorbing mechanism. The energy absorbing mechanism is used to absorb the vibration energy when the tooth tip 3 vibrates and input it into the shock absorbing mechanism. The shock absorbing mechanism is used to reduce the vibration received by the tooth tip 3.

[0042] The tine body 1 is an S-shaped structure, and the structural dimension parameters of the tine body 1 are formulated in accordance with the national standard GB / T17988-1805 "Main dimensions and clearance ranges of S-shaped tines of soil working parts of agricultural machinery".

[0043] The overall shape of the tooth tip 3 is based on the mole claw curve fitting. After simulating the mole claw toe to design a potato digging shovel, the simulation results show that a single mole claw toe digging shovel reduces drag by 7.68%, and a set of mole claw toe digging shovels reduces drag by 17.85%.

[0044] The raised mechanism is a number of longitudinal corrugated blocks 4, each of which is provided with a number of spherical crown-shaped convex hulls 5. The longitudinal corrugated blocks 4 are based on the woodlice as a bionic prototype, and the bottom circle radius R of the convex hull 5 and the height h of the convex hull 5 are set. When in use, it is necessary to ensure that h≤R.

[0045] Sawtooth bars 6 are symmetrically provided on both sides of the tooth tip 3. The sawtooth bars 6 are based on the bionic prototype of the mantis's front legs, thereby improving the ability to cut weed roots during farming and increasing the ability to cut and crush the soil.

[0046] The spring tooth body 1 is provided with a mounting hole, which is used to install the telescopic mounting tube 7. The rotating mechanism includes the telescopic mounting tube 7, a pressing block 8, a rotating block 1 9, a rotating block 2 10, a return spring 11 and a return spring 2 12. The telescopic mounting tube 7 is arranged in the mounting hole. The telescopic mounting tube 7 is used to install other components of the rotating mechanism. The movable end of the telescopic mounting tube 7 and the tooth tip 3 are rotatably connected. Therefore, when the tooth tip 3 rotates, the movable end of the telescopic mounting tube 7 does not rotate. The telescopic mounting tube 7 is provided with a mounting cavity, which is used to install the rotating block 1 9 and the rotating block 2 10. The rotating block 1 9 is arranged in the mounting cavity. The rotating block 2 10 is fixedly connected to the tooth tip 3. The pressing block 8 is arranged through the rotating block 1 9. The two ends of the return spring 11 are respectively connected to the rotating block 1 9 and the pressing block 8. The return spring 11 is used to drive the pressing block 8 to reset. The two ends of the return spring 2 12 are respectively connected to the side wall of the mounting cavity and the rotating block 2 10. The return spring 2 12 is used to drive the rotating block 2 10 to reset.

[0047] The rotating block 1 9 is provided with four engaging grooves 901, and four engaging blocks 1001 are arranged around the bottom of the rotating block 2 10 corresponding to the engaging grooves 901. By pressing the pressing block 8, the engaging blocks 1001 are engaged in different engaging grooves 901, thereby driving the rotating block 2 10 to rotate and then driving the tooth tip 3 to rotate. When the engaging block 1001 is inserted into the adjacent engaging groove 901, it will drive the tooth tip 3 to rotate ninety degrees.

[0048] The locking mechanism includes a locking rod 13, a locking spring 14 and a locking block 15. The locking rod 13 is fixedly connected to the pressing block 8. The two ends of the locking spring 14 are respectively connected to the locking rod 13 and the locking block 15. The locking spring 14 is used to keep the locking block 15 in a limited state for the rotating block 2 10. The rotating block 2 10 is provided with a locking groove 1002. The locking block 15 is inserted into the locking groove 1002 by the locking spring 14 to limit the movement of the rotating block 2 10. The locking block 15 is used to interact with the locking groove 1002 to further limit the movement of the rotating block 2 10. As shown in the accompanying drawings of the specification, the shape of the locking block 15 is a trapezoidal structure. Therefore, when the pressing block 8 drives the locking block 15 to move, it will drive the lock hole to retract the lock groove 1002 and then contact the locking of the rotating block 2 10.

[0049] The shock-absorbing mechanism includes a telescopic rod and a shock-absorbing spring 16. The spring tooth body 1 is provided with a limit groove 101 to prevent the telescopic rod from shaking. When the tooth tip 3 is not rotated, the telescopic rod is set in the limit groove 101. As shown in the accompanying drawings of the specification, there are four limit grooves 101 surrounding the mounting hole of the telescopic mounting tube 7, and the limit grooves 101 and the telescopic rod are the same size. The limit groove 101 is used to clamp the telescopic rod and limit the movement of the telescopic rod when the angle of the tooth tip 3 is not switched. The two ends of the telescopic rod are respectively connected to the telescopic mounting tube 7 and the tooth tip 3. One end of the telescopic rod is rotatably connected to the tooth tip 3, and the other end of the telescopic rod is connected to the telescopic mounting tube 7 through a universal joint. The shock-absorbing spring 16 is arranged inside the telescopic rod. The shock-absorbing spring 16 is used to keep the telescopic rod in an extended state at all times.

[0050] The telescopic rod includes an inner tube 17, an outer tube 18 and a pressure relief valve 19. The outer tube 18 is mounted on the movable end of the telescopic mounting tube 7 through a mounting ring 1802. The mounting ring 1802 is rotatably connected to the movable end of the telescopic mounting tube 7. The connecting portion of the inner tube 17 and the outer tube 18 is provided with an air cavity 1701. As shown in the accompanying drawings of the specification, the air cavity 1701 is provided at the overlapping portion of the inner tube 17 and the outer tube 18. The energy absorbing mechanism includes a one-way air valve 1801 and a one-way air valve 2 1702. The one-way Air valve 1801 is set on the outer tube 18 and is used to prevent the outside air from flowing into the air cavity 1701 in one direction. One-way air valve 2 1702 is set on the inner tube 17 and is used to prevent the air in the air cavity 1701 from flowing into the outer tube 18 in one direction. The pressure relief valve 19 is set on the outer tube 18. When the pressure relief valve 19 reaches the pressure relief value, it will open, thereby releasing the air pressure inside the telescopic rod to achieve the effect of dynamically adjusting the shock absorption, thereby preventing the air pressure inside the telescopic rod from being too high, resulting in poor adjustability of the support rod.

[0051] Working principle: When the position of the tooth tip 3 is switched, press the pressing block 8, the pressing block 8 will move along the rotating block 1 9 and then push the rotating block 2 10 to rotate. At this time, the rotating block 2 10 will rotate, and the rotating block 2 10 will drive the tooth tip 3 to rotate and complete the switching of the tooth tip 3 position. In actual use, the tooth tip 3 can be moved as shown in the attached manual. Figure 1 and instructions attached Figure 2 The two directions are set to complete different tasks such as digging, combing, and raking the land. The unused working surface can also be switched to the working end by position switching, which enhances the service life of the tooth tip 3. After the rotation is completed, the return spring 11 and the return spring 2 12 will press the block 8 to rebound and then drive the locking block 15 to insert into the lock hole to lock the tooth tip 3. When switching, the telescopic rod will rotate along the telescopic mounting tube 7. After the angle switching is completed, the telescopic rod will be re-engaged in the limit groove 101; when the tooth tip 3 contacts the soil or the roots of plants (including weeds) and is vibrated, the shock-absorbing spring 16 will first absorb the vibration. While the shock-absorbing spring 16 absorbs the vibration, it will drive the telescopic rod to extend and retract, thereby inputting outside air into the telescopic rod to enhance the damping performance of the telescopic rod. When the air pressure in the telescopic rod reaches the release value of the pressure relief valve 19, the pressure relief valve 19 will open and discharge part of the air in the telescopic rod, effectively ensuring that the telescopic rod always maintains a high shock absorption performance.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A cultivator S-shaped spring tine based on bionic technology, characterized in that: include: A spring tooth body, wherein the spring tooth body is provided with a fixing hole for fixing the spring tooth body, one end of the spring tooth body is connected to a tooth tip, and a protrusion mechanism for reducing adhesion and desorption is provided on the outer side of the tooth tip; A switching assembly, the switching assembly comprising a rotating mechanism and a locking mechanism, the rotating mechanism being used to drive the tooth tip to rotate, and the locking mechanism being used to lock the tooth tip after the rotating mechanism completes the rotation of the tooth tip; as well as an adjustment assembly, the adjustment assembly including an energy absorbing mechanism and a shock absorbing mechanism, the energy absorbing mechanism being used to absorb the vibration energy when the tooth tip vibrates and input the energy into the shock absorbing mechanism, the shock absorbing mechanism being used to reduce the vibration experienced by the tooth tip; The spring tooth body is provided with a mounting hole, and the rotating mechanism includes a telescopic mounting tube, a pressing block, a rotating block 1, a rotating block 2, a return spring 1 and a return spring 2, the telescopic mounting tube is arranged in the mounting hole, the telescopic mounting tube is provided with a mounting cavity, the rotating block 1 is arranged in the mounting cavity, the rotating block 2 is connected to the tooth tip, the pressing block is arranged through the rotating block 1, the two ends of the return spring 1 are respectively connected to the rotating block 1 and the pressing block, and the two ends of the return spring 2 are respectively connected to the side wall of the mounting cavity and the rotating block 2, and the pressing block is used to drive the rotating block 2 to rotate; The shock-absorbing mechanism includes a telescopic rod and a shock-absorbing spring. The spring tooth body is provided with a limiting groove to prevent the telescopic rod from shaking. The telescopic rod is arranged in the limiting groove. The two ends of the telescopic rod are respectively connected to the telescopic mounting tube and the tooth tip. The shock-absorbing spring is arranged inside the telescopic rod. The telescopic rod includes an inner tube, an outer tube and a pressure relief valve. An air cavity is provided at the connection between the inner tube and the outer tube. The energy absorption mechanism includes a one-way air valve 1 and a one-way air valve 2. The one-way air valve 1 is provided on the outer tube and is used to allow external air to flow into the air cavity in one direction only. The one-way air valve 2 is provided on the inner tube and is used to allow air in the air cavity to flow into the interior of the outer tube in one direction only. The pressure relief valve is provided on the outer tube.

2. The S-shaped spring tine for a cultivator based on bionic technology according to claim 1, characterized in that: The spring tooth body is an S-shaped structure.

3. The S-shaped spring tine for a cultivator based on bionic technology according to claim 1, characterized in that: The overall shape of the tooth tip is based on the curve fitting of a mole's claw.

4. The S-shaped spring tine for a cultivator based on bionic technology according to claim 1, characterized in that: The convex mechanism is a plurality of longitudinal corrugated blocks, and each of the longitudinal corrugated blocks is provided with a plurality of spherical crown convex hulls.

5. The S-shaped spring tine for a cultivator based on bionic technology according to claim 1, characterized in that: Sawtooth bars are symmetrically provided on both sides of the tooth tip.

6. The S-shaped spring tine for a cultivator based on bionic technology according to claim 1, characterized in that: The rotating block 1 is provided with four clamping grooves, and four clamping blocks are arranged around the bottom of the rotating block 2 corresponding to the clamping grooves. By pressing the pressing block, the clamping blocks are clamped in different clamping grooves, thereby driving the rotating block 2 to rotate.

7. The S-shaped spring tine for a cultivator based on bionic technology according to claim 6, characterized in that: The locking mechanism includes a locking rod, a locking spring and a locking block. The locking rod is arranged on the pressing block. The two ends of the locking spring are respectively connected to the locking rod and the locking block. The rotating block 2 is provided with a locking groove. The locking block is inserted into the locking groove through the locking spring to limit the movement of the rotating block 2.

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