Bionic drag-reducing share plough based on shark scale structure

Abstract

The application relates to a bionic drag-reducing share plough based on a shark scale structure, which comprises a plough share, a plough chest connected with the plough share and a plough wall connected with the plough chest, the plough share is provided with a cutting tip, a plurality of first bionic ribs are uniformly distributed on the upper surface of the plough share at intervals, the first bionic ribs are at a certain angle with the advancing direction of the plough body, the lower surface of the cutting tip is provided with a plurality of second bionic ribs, the second bionic ribs are perpendicular to the advancing direction of the plough body, and the lengths of the plurality of second bionic ribs gradually increase from the front end to the rear end along the length direction of the cutting tip. The application can reduce the working resistance of the share plough and lower the working power consumption.

Description

Technical Field

[0001] This invention relates to the field of agricultural tillage machinery, specifically to a biomimetic drag-reducing moldboard plow based on a shark shield scale structure. Background Technology

[0002] Plowing is a crucial part of agricultural production. The moldboard plow cultivates the soil by cutting, breaking up, and turning over clods, breaking up the plow pan, restoring soil structure, improving water retention, eliminating some weeds, and reducing pests and diseases. The resistance experienced by the plowshare mainly consists of the normal pressure of the soil clods on the plowshare's curved surface and the resulting friction, adhesion, and the cutting resistance of the plowshare blades. The resistance generated by the plowshare tip during cultivation, due to its high friction and poor resistance performance, accounts for approximately 20% to 30% of the overall operating resistance of the implement. Appropriately modifying the structure of the plowshare can reduce the plowing resistance and power consumption of the moldboard plow.

[0003] Observing the microstructure of the skin of sharks swimming rapidly in seawater reveals micron-sized scales, with even finer rib-like grooves arranged on the dermal denticles. Studies have shown that the uniform or non-uniform distribution of micron-sized protrusions or grooves on macroscopic surfaces contributes to the excellent low-resistivity properties of these multi-scale surface morphologies. Therefore, applying the shark dermal denticle structure to the design of plowshares has a strong theoretical basis. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a biomimetic drag-reducing moldboard plow based on a shark shield scale structure, thereby reducing the tillage resistance of the moldboard plow and lowering tillage power consumption.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A biomimetic drag-reducing plow based on shark shield scale structure, characterized in that it includes a plowshare, a plowshare connected to the plowshare, and a plowshare wall connected to the plowshare. The plowshare is provided with a shovel tip. Multiple first biomimetic ribs are evenly distributed on the upper surface of the plowshare. The first biomimetic ribs form a certain angle with the forward direction of the plow body. Multiple second biomimetic ribs are provided on the lower surface of the shovel tip. The second biomimetic ribs are perpendicular to the forward direction of the plow body. The length of the multiple second biomimetic ribs gradually increases from the front end to the rear end along the length direction of the shovel tip.

[0006] As a preferred embodiment, the lengths of the multiple first bionic ribs are equal, and the angle between the first bionic ribs and the forward direction of the plow body is 44°.

[0007] As a preferred embodiment, the cross-section of the first bionic rib is the first cross-section. The outline of the first cross-section is composed of the bottom edge A and two bionic curves A. The equation of the bionic curve A is y1=A1sin(ω1x1), where A1=5, ω1=π / 14, and the value of x1 ranges from 0mm to 7mm.

[0008] As a preferred embodiment, the height of the first cross-section is H1, the length of the bottom side A is D1, and the ratio of H1 to D1 is 0.7.

[0009] As a preferred embodiment, the cross-section of the second biomimetic rib is the second cross-section. The outline of the second cross-section consists of the bottom edge B and two biomimetic curves B. The equation of the biomimetic curves B is y2=A2sin(ω2x2), where A2=2.5, ω2=π / 7, and the value of x2 ranges from 0mm to 3.5mm.

[0010] As a preferred embodiment, the height of the second cross section is H2, the length of the bottom edge B is D2, and the ratio of H2 to D2 is 0.7.

[0011] As a preferred option, the distance S1 between two adjacent first biomimetic ribs is 18mm.

[0012] As a preferred option, the spacing S2 between two adjacent second biomimetic ribs is 8mm.

[0013] As a preferred embodiment, a plowshare is provided on the lower surface where the plowshare and the plowshare connect.

[0014] As a preferred embodiment, the plowshare is located between the plowshare and the plow wall, and the plow wall includes a plurality of slats.

[0015] The beneficial effects are as follows: Through optimized design, this scheme, based on a shark-scale structure, enables the biomimetic drag-reducing moldboard plow to reduce soil disturbance area during plowing, thereby lowering plowing resistance and energy consumption. Discrete element simulation test results show that under normal operating conditions (300mm plowing depth, 2m / s plowing speed), using this biomimetic drag-reducing moldboard plow based on a shark-scale structure can reduce horizontal plowing resistance by an average of 18.09%. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a frontal schematic diagram of the plowshare and shovel tip of the present invention;

[0018] Figure 3 This is a cross-sectional view of the first biomimetic rib of the present invention;

[0019] Figure 4 This is an isometric view of the first biomimetic rib of the present invention;

[0020] Figure 5 This is a schematic diagram of the back of the plowshare and shovel tip of the present invention;

[0021] Figure 6 This is a cross-sectional view of the second biomimetic rib of the present invention;

[0022] Figure 7 This is an axonometric view of the second biomimetic rib of the present invention;

[0023] Figure 8 This is a graph of the biomimetic curve A and biomimetic curve B of the present invention;

[0024] Figure 9 The graph shows the plowing resistance of the biomimetic drag-reducing moldboard plow of this invention and a conventional non-biomimetic moldboard plow under normal working conditions as a function of time.

[0025] Figure labels: 1. Plowshare, 2. First bionic rib, 21. First cross section, 211. Bionic curve A, 3. Plowshare, 31. Plowshare blade line, 4. Second bionic rib, 41. Second cross section, 411. Bionic curve B, 5. Shovel tip, 6. Plowshare chest, 7. Plowshare support, 8. Plowshare forward direction. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that, in the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] Please see Figure 1-8 This invention provides a biomimetic drag-reducing plow based on a shark shield scale structure, including a plowshare 3, a plowshare 6 connected to the plowshare 3, and a plowshare wall 1 connected to the plowshare 6. The plowshare 3 is provided with a shovel tip 5. Multiple first biomimetic ribs 2 are evenly distributed on the upper surface of the plowshare 3. The first biomimetic ribs 2 form a certain angle with the plow body's forward direction 8. Multiple second biomimetic ribs 4 are provided on the lower surface of the shovel tip 5. The second biomimetic ribs 4 are perpendicular to the plow body's forward direction 8. The length of the multiple second biomimetic ribs 4 gradually increases from the front end to the rear end along the length direction of the shovel tip 5.

[0028] Among them, such as Figure 1 As shown, the plow body of this application is a grid structure, wherein the tillage depth is 300mm, the tillage width L3 is 600mm, the lower surface where the plowshare 3 and the plow chest 6 are connected is provided with a plow support 7, the plow chest 6 is located between the plowshare 3 and the plow wall 1, and the plow wall 1 includes multiple grids.

[0029] Specifically, the lengths of the multiple first bionic ribs 2 are equal. The cross-section of the first bionic rib 2 is a first cross-section 21. The outline of the first cross-section 21 is composed of a base A and two bionic curves A 211. The first cross-section 21 is an isosceles triangle. The two bionic curves A 211 are the two hypotenuses of the isosceles triangle. The concave surfaces of the two bionic curves A 211 face outward. The base A is the straight side of the isosceles triangle. The equation of the bionic curve A 211 is y1=A1sin(ω1x1), where A1=5, ω1=π / 14, and x1 ranges from 0mm to 7mm. The height of the first cross-section 21 is H1, the length of the base A is D1, the ratio of H1 to D1 is 0.7, H1=7mm, and D1=10mm. The distance S1 between two adjacent first bionic ribs 2 is 18mm. The first bionic rib 2 is formed by stretching the first cross-section 21.

[0030] Furthermore, the cross-section of the second biomimetic rib 4 is a second cross-section 41. The outline of the second cross-section 41 is composed of the base B and two biomimetic curves B 411. The second cross-section 41 is an isosceles triangle, with the two biomimetic curves B 411 forming the two hypotenuses of the isosceles triangle. The concave surfaces of the two biomimetic curves B 411 face outwards, and the base B is the straight side of the isosceles triangle. The equation of curve 411 is y2=A2sin(ω2x2), where A2=2.5, ω2=π / 7, and x2 ranges from 0mm to 3.5mm. The height of the second cross-section 41 is H2, the length of the bottom edge B is D2, the ratio of H2 to D2 is 0.7, H2=3.5mm, and D2=5mm. The distance S2 between two adjacent second biomimetic ribs 4 is 8mm. The second biomimetic ribs 4 are formed by stretching the second cross-section 41. This application uses shark dermal fins as the design basis for biomimetic curves A and B. The curve diagrams of biomimetic curves A and B are shown below. Figure 8 As shown.

[0031] In this embodiment, the angle between the first bionic rib 2 and the forward direction 8 of the plow body is 44°, so that the long side of the first bionic rib 2 is parallel to the moldboard line 31, and the second bionic rib 4 is perpendicular to the forward direction 8 of the plow body. This ensures that during the plowing process, the soil fully contacts the first bionic rib 2 and the second bionic rib 4 when it turns along the plowshare. The length L1 of the first bionic rib 2 is 400mm, while the length L2 of the second bionic rib 4 on the lower surface of the shovel tip 5 varies from 30mm to 85mm depending on the size of each part of the shovel tip 5, increasing by 5mm from short to long. That is, the length difference between two adjacent second bionic ribs 4 is 5mm.

[0032] Figure 9The diagram shows the plowing resistance over time of the biomimetic drag-reducing moldboard plow based on the shark shield scale structure of this invention and a conventional non-biomimetic moldboard plow under normal working conditions (300mm plowing depth, 2m / s plowing speed). Discrete element simulation results show that, compared with a conventional non-biomimetic moldboard plow, under working conditions of 300mm plowing depth and 2m / s plowing speed, using the biomimetic drag-reducing moldboard plow based on the shark shield scale structure of this invention can reduce the horizontal plowing resistance by an average of 18.09%.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A biomimetic drag-reducing moldboard plow based on shark scute structure, characterized in that, It includes a plowshare (3), a plowshare (6) connected to the plowshare (3) and a plowshare wall (1) connected to the plowshare (6). The plowshare (3) is provided with a shovel tip (5). Multiple first bionic ribs (2) are evenly distributed on the upper surface of the plowshare (3). The first bionic ribs (2) form a certain angle with the forward direction (8) of the plow body. Multiple second bionic ribs (4) are provided on the lower surface of the shovel tip (5). The second bionic ribs (4) are perpendicular to the forward direction (8) of the plow body. The length of the multiple second bionic ribs (4) gradually increases from the front end to the rear end along the length direction of the shovel tip (5). The cross-section of the first biomimetic rib (2) is the first cross-section (21). The outline of the first cross-section (21) consists of the base A and two biomimetic curves A (211). The equation of the biomimetic curves A (211) is: ,in, , , The value range is 0mm~7mm; The angle between the first bionic rib (2) and the forward direction (8) of the plow body is 44°. The height of the first cross section (21) is H1, the length of the bottom side A is D1, and the ratio of H1 to D1 is 0.

7.

2. The biomimetic drag-reducing plow based on shark scute structure according to claim 1, characterized in that: The lengths of the multiple first biomimetic ribs (2) are equal.

3. The biomimetic drag-reducing plow based on shark scute structure according to claim 1, characterized in that: The cross-section of the second biomimetic rib (4) is the second cross-section (41). The outline of the second cross-section (41) is composed of the base B and two biomimetic curves B (411). The equation of the biomimetic curves B (411) is: ,in, , , The value range is 0mm to 3.5mm.

4. The biomimetic drag-reducing plow based on shark scute structure according to claim 3, characterized in that: The second cross section (41) has a height of H2 and a length of bottom edge B of D2. The ratio of H2 to D2 is 0.

7.

5. The biomimetic drag-reducing plow based on shark scute structure according to claim 1, characterized in that: The distance S1 between two adjacent first bionic ribs (2) is 18mm.

6. The biomimetic drag-reducing plow based on shark scute structure according to claim 1, characterized in that: The distance S2 between two adjacent second bionic ribs (4) is 8 mm.

7. The biomimetic drag-reducing plow based on shark scute structure according to claim 1, characterized in that: The lower surface where the plowshare (3) and the plowshare (6) are connected is provided with a plow support (7).

8. The biomimetic drag-reducing plow based on shark scute structure according to claim 1, characterized in that: The plowshare (6) is located between the plowshare (3) and the plowshare (1), and the plowshare (1) includes a plurality of slats.

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