Manis pentadactyla and white tail mole coupling bionic resistance-reducing abrasion-resistant subsoiler

Abstract

The invention belongs to the technical field of agricultural machinery, and particularly relates to a pangolin and white tail mole coupling bionic resistance-reduction abrasion-resistance subsoiler which comprises a shovel handle and a shovel head, the shovel handle is provided with a cutting edge profile curve, an inner directrix and an outer contour line, the outer contour line is a bionic curve, and the expression of the bionic curve is # imgabs0 #. The expression of the depth D and the width W of each bionic texture and the expression of the distance B between every two adjacent bionic textures are as follows: D = alpha L + 45, W = beta L + 440 and B = gamma L + 300, alpha, beta and gamma are fixed values, and L is the length of the shovel head. In the subsoiler, the shovel handle simulates the dig claw toe of the white tail mole, and the shovel head simulates the pangolin scale texture, so that the tillage resistance and abrasion of the subsoiler are effectively reduced, and the resistance-reducing abrasion-resisting effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to a pangolin and white-tailed mole coupled bionic impedance-reducing grinding deep loosening shovel. Background Art

[0002] Agricultural soil-contacting machinery refers to agricultural machinery used for direct contact with the soil and for tillage, planting, management and other operations. The working environment of agricultural soil-contacting machinery is relatively harsh. It is in direct contact with soil, gravel, stones, etc., and is often subject to wear and impact, and is often in a state of no lubrication. The wear of agricultural soil-contacting working parts is the main factor affecting its production efficiency and energy consumption. The most typical wear is the wear of soil on soil-contacting working parts. In addition, a large part of the reason for the scrapping of agricultural machinery is the failure of frictional wear between the soil-contacting working parts and the soil. According to relevant statistics, the proportion of agricultural machinery scrapped due to soil wear is as high as more than 60%. For this reason, traditional methods of reducing impedance grinding, such as increasing the hardness of soil-contacting working parts, single bionic application or adding soil guide grooves on their working surface, can reduce the resistance of soil-contacting working parts and reduce the wear of soil-contacting working parts, but the effect of reducing impedance grinding is limited, and the effect of reducing impedance grinding on agricultural soil-contacting machinery is very limited. Summary of the invention

[0003] The present invention intends to provide a pangolin and white-tailed mole coupled bionic impedance-reducing grinding deep tillage shovel to solve the problems of large tillage resistance and large wear of the deep tillage shovel.

[0004] In order to achieve the above-mentioned object, the scheme of the present invention is: a pangolin and white-tailed mole coupled bionic impedance reduction grinding deep loosening shovel, comprising a shovel handle and a shovel head, the shovel handle having a cutting edge contour curve, an inner directrix and an outer contour line, the curved surface between the cutting edge contour curve and the inner directrix constitutes a cutting edge curved surface, the outer contour line is a bionic curve, and the bionic curve expression is shown in formula (I);

[0005]

[0006] In formula (I), the value range of x is -120≤x≤81.095;

[0007] The surface of the shovel head is provided with a plurality of bionic textures, the depth D of each bionic texture is expressed as shown in formula (II), the width W of each bionic texture is expressed as shown in formula (III), and the spacing B between two adjacent bionic textures is expressed as shown in formula (IV);

[0008] D=αL+45 Formula (Ⅱ)

[0009] W=βL+440 Formula (III)

[0010] B=γL+300 Formula (Ⅳ)

[0011] In formula (II), formula (III) and formula (IV), α is 0.06608, β is 0.0451745, γ is 0.009029, L is the length of the shovel head, and the units of depth D, width W, spacing B and length L are all μm. At the same time, the starting point of the length L is the tip of the shovel head; the radial cross-section of a single bionic texture is arc-shaped, and the projection of the central axis of a bionic texture on the horizontal plane coincides with the projection of the central axis of the shovel head on the horizontal plane.

[0012] The working principle and beneficial effects of this solution are as follows: In this solution, the outer contour curve of the front paw of the white-tailed mole is combined with the handle of the deep tillage shovel. Specifically, the outer contour line of the handle is biomimetic to the outer contour curve of the front paw of the white-tailed mole, so that the deep tillage shovel can simulate the digging claws of the white-tailed mole to dig the soil, thereby reducing the tillage resistance. At the same time, in this solution, the pangolin scale texture is combined with the shovel head of the deep tillage shovel, so that the surface of the shovel head has a biomimetic texture. In this way, when the deep tillage shovel is used to till dry soil, the biomimetic texture on the shovel head can store free abrasive particles, thereby reducing wear; and when the wet plot is cultivated, the biomimetic texture on the shovel head can store water, realize secondary lubrication, reduce wear, and reduce some tillage resistance.

[0013] In summary, combining the outer contour curve of the white-tailed mole's front paw with the shovel handle of the deep plowing shovel, and combining the pangolin scale texture with the shovel head of the deep plowing shovel, not only reduces tillage resistance, but also reduces tillage wear and extends the service life of the deep plowing shovel.

[0014] Optionally, bolt holes are provided on the shovel handle and the shovel head.

[0015] In this solution, the shovel handle and the shovel head are connected by passing the bolts through the bolt holes.

[0016] Optionally, there are two bolt holes on the shovel head, and the two bolt holes are arranged along the length direction of the shovel head.

[0017] In this solution, two bolt holes on the shovel head are a more appropriate number of bolt holes, which can effectively connect the shovel head and the shovel handle.

[0018] Optionally, the bolt hole on the shovel head includes a square hole section and a countersunk hole section.

[0019] In this solution, the bolts suitable for the bolt holes are square head bolts, and the square head bolts can be sunk to prevent the square head bolts from being exposed on the surface of the shovel head.

[0020] Optionally, the bolt hole is centered on the shovel head and the shovel handle.

[0021] Optionally, a plurality of mounting holes are provided at one end of the shovel handle away from the shovel head, and the plurality of mounting holes are arranged along the length direction of the shovel handle.

[0022] In this solution, there are many mounting holes, and the burial depth of the shovel body can be freely adjusted according to the ground conditions, thereby achieving the optimal burial depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an axonometric diagram of a pangolin and white-tailed mole coupled bionic impedance-reducing grinding deep loosening shovel in Example 1 of the present invention;

[0024] Figure 2 This is a front view of a pangolin and white-tailed mole coupled bionic impedance-reducing grinding deep loosening shovel in Example 1 of the present invention;

[0025] Figure 3 It is a left view of a pangolin and white-tailed mole coupled bionic impedance-reducing grinding deep loosening shovel in the first embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the shovel head in the first embodiment of the present invention;

[0027] Figure 5 for Figure 2 Sectional view in the AA direction;

[0028] Figure 6 It is a schematic diagram of the structure when the shovel handle and the shovel head are separated in the first embodiment of the present invention. DETAILED DESCRIPTION

[0029] The following is further described in detail through specific implementation methods:

[0030] The marks in the drawings of the specification include: shovel handle 1, shovel head 2, cutting edge contour curve 3, inner guideline 4, outer contour line 5, bionic texture 6, bolt hole 7, square hole section 701, countersunk hole section 702, and mounting hole 8.

[0031] Embodiment 1

[0032] This embodiment is basically Figure 1 , Figure 2 and Figure 3 As shown: A pangolin and white-tailed mole coupled bionic impedance-reducing grinding deep loosening shovel comprises a shovel handle 1 and a shovel head 2. The shovel handle 1 has a cutting edge contour curve 3, an inner directrix 4 and an outer contour line 5. The curved surface between the cutting edge contour curve 3 and the inner directrix 4 constitutes a cutting edge curved surface. The cutting edge contour curve 3 and the inner directrix 4 are cutting edge curves, and the outer contour line 5 is a bionic curve. The bionic curve expression is shown in formula (I):

[0033]

[0034] In formula (I), x refers to the abscissa in the coordinate system of the bionic curve, and the value range of x is -120≤x≤81.095. In addition, in this embodiment, other structural parameters of the shovel handle, such as the edge profile curve, are the same as the structural parameters of the chisel-shaped light subsoiler handle in "JB / T 9788-2020 Subsoiler and Subsoiler Handle".

[0035] Combination Figure 4 and Figure 5 As shown, the surface of the shovel head 2 is provided with a plurality of bionic textures 6, the depth D of each bionic texture 6 is expressed as shown in formula (II), the width W of each bionic texture 6 is expressed as shown in formula (III), and the spacing B between two adjacent bionic textures 6 is expressed as shown in formula (IV):

[0036] D = αL + 45 Formula (II);

[0037] W = βL + 440 Formula (III);

[0038] B=γL+300 Formula (IV).

[0039] In formula (II), formula (III) and formula (IV), α is 0.06608, β is 0.0451745, γ is 0.009029, L is the length of the shovel head 2, and the units of depth D, width W, spacing B and length L are all μm. At the same time, the starting point of the length L is the tip of the shovel head 2 (the tip of the shovel is the end of the shovel head 2 away from the shovel handle 1). The radial cross section of a single bionic texture 6 is an arc, and the projection of the central axis of the bionic texture 6 in the middle on the horizontal plane coincides with the projection of the central axis of the shovel head 2 on the horizontal plane.

[0040] The shovel handle 1 and the shovel head 2 are both provided with two bolt holes 7, so that the shovel handle 1 and the shovel head 2 are connected by bolts passing through the bolt holes 7. The two bolt holes 7 are centered on the shovel head 2 and the shovel handle 1, and the two bolt holes 7 on the shovel head 2 are arranged along the length direction of the shovel head 2. Figure 6 As shown, the bolt hole 7 on the shovel head 2 includes a square hole section 701 and a countersunk hole section 702 , so that the bolt suitable for the bolt hole 7 is a square head bolt, and the square head bolt can sink to prevent the square head bolt from being exposed on the upper surface of the shovel head 2 .

[0041] The top of the shovel handle 1 is provided with a plurality of mounting holes 8, which are arranged along the length direction of the shovel handle 1. In this embodiment, the number of mounting holes 8 is six, so that when cultivating, the burying depth of the shovel body can be freely adjusted according to the ground conditions, so as to achieve the best burying depth.

[0042] In addition, the chisel-shaped light subsoiler of "JB / T 9788-2020 Subsoiler and Subsoiler Handle" has an entry angle of 23°. The subsoiler in this embodiment does not change the entry angle, that is, the entry angle of the subsoiler in this embodiment is still 23°. A tangent is made at the end of the shovel handle 1 closest to the shovel head 2, and the tangent point is at the end point of the outer contour line 5 of the shovel handle 1 close to the shovel head 2. The angle β between the mounting surface of the shovel head 2 and the above tangent is measured, and the angle β=8.03° (such as Figure 2 As shown); while in the chisel-shaped light subsoiler of "JB / T 9788-2020 Subsoiler and Subsoiler Handle", the angle β is 5.33°.

[0043] In this embodiment, when the deep tillage shovel is working, it can simulate the digging claws of the white-tailed mole to dig the soil, thereby reducing the tillage resistance. At the same time, the bionic texture 6 on the surface of the shovel head 2, the bionic pangolin scale texture, can store free abrasive particles and water, thereby reducing wear, achieving secondary lubrication, reducing part of the tillage resistance, and improving the anti-wear effect. The tillage experiment was carried out at a tillage depth of 262mm and a tillage speed of 0.9 to 1.5m / s, and the following findings were made: Compared with the conventional deep tillage shovel ("conventional deep tillage shovel" refers to the chisel-shaped light deep tillage shovel in "JB / T 9788-2020 Deep tillage shovel and deep tillage shovel handle", the same below), the deep tillage shovel in this embodiment has a tangential (traction direction) drag reduction rate of 17.22% to 17.55%, and a normal drag reduction rate of 8.85% to 8.81%. The semi-improved deep tilling shovel I obtained by combining the shovel head in this embodiment with the shovel handle of a conventional deep tilling shovel has a tangential (traction direction) drag reduction rate of only 6.79% to 7.06% and a normal drag reduction rate of only 0.63% to 3.46% compared with the conventional deep tilling shovel. The semi-improved deep tilling shovel II obtained by combining the shovel handle in this embodiment with the shovel head of a conventional deep tilling shovel has a tangential (traction direction) drag reduction rate of only 13.68% to 12.16% and a normal drag reduction rate of only 5.48% to 6.32% compared with the conventional deep tilling shovel. It can be seen from this that the present invention can effectively reduce tillage resistance, reduce tillage wear, and extend the service life of the deep tilling shovel.

[0044] The above are only embodiments of the present invention. The invention is not limited to the fields involved in this implementation case. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field to which the invention belongs before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the present invention. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. A pangolin and white-tailed mole coupled bionic impedance-reducing grinding deep loosening shovel, comprising a shovel handle and a shovel head, wherein the shovel handle has a cutting edge contour curve, an inner directrix and an outer contour line, and the curved surface between the cutting edge contour curve and the inner directrix constitutes a cutting edge curved surface, characterized in that: The outer contour line is a bionic curve, and the expression of the bionic curve is shown in formula (I); In formula (I), the value range of x is -120≤x≤81.095; The surface of the shovel head is provided with a plurality of bionic textures, the depth D of each bionic texture is expressed as shown in formula (II), the width W of each bionic texture is expressed as shown in formula (III), and the spacing B between two adjacent bionic textures is expressed as shown in formula (IV); D=αL+45Formula (Ⅱ) W=βL+440 Formula (III) B=γL+300 Formula (Ⅳ) In formula (II), formula (III) and formula (IV), α is 0.06608, β is 0.0451745, γ is 0.009029, L is the length of the shovel head, and the units of depth D, width W, spacing B and length L are all μm. At the same time, the starting point of the length L is the tip of the shovel head; the radial cross-section of a single bionic texture is arc-shaped, and the projection of the central axis of a bionic texture on the horizontal plane coincides with the projection of the central axis of the shovel head on the horizontal plane.

2. The pangolin and white-tailed mole coupled bionic impedance-reducing grinding deep loosening shovel according to claim 1, characterized in that: The shovel handle and the shovel head are both provided with bolt holes.

3. The pangolin and white-tailed mole coupled bionic impedance-reducing grinding deep loosening shovel according to claim 2, characterized in that: The number of the bolt holes on the shovel head is two, and the two bolt holes are arranged along the length direction of the shovel head.

4. The pangolin and white-tailed mole coupled bionic impedance-reducing grinding deep loosening shovel according to claim 2 or 3, characterized in that: The bolt hole on the shovel head comprises a square hole section and a countersunk hole section.

5. The pangolin and white-tailed mole coupled bionic impedance-reducing grinding deep loosening shovel according to claim 4, characterized in that: The bolt holes are centered on the shovel head and the shovel handle.

6. The pangolin and white-tailed mole coupled bionic impedance-reducing grinding deep loosening shovel according to claim 1, characterized in that: A plurality of mounting holes are arranged at one end of the shovel handle away from the shovel head, and the plurality of mounting holes are arranged along the length direction of the shovel handle.

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