CN203015420U - Bionic core ploughshare-type seed opener - Google Patents

Abstract

The utility model provides a bionic core ploughshare-type seed opener and belongs to the technical field of agricultural machinery. The bionic core ploughshare-type seed opener has the characteristics of wear resistance, adhesion reduction and resistance reduction based on the surface structures and convex closure structures of scales of a soil cave animal, namely a pangolin; scale-type geometric structures and convex closure geometric structures are regularly distributed on the upper surface of the front part matrix of a core ploughshare according to optimized analysis and geometrical measurement; and the centre distance L between each scale-type geometric structure and each convex closure geometric structures is 5-25, and the scale-type geometric structures, the convex closure geometric structures and the matrix are machined into a whole body. The bionic core share-type seed opener has very good technical effects of reducing soil adhesion and working resistance, and is capable of improving the seeding and fertilizer distribution quality and reducing the power consumption.

Description

Bionic core conventional sowing opener

technical field

The utility model belongs to the technical field of agricultural machinery, in particular to a bionic coreshare type sowing ditch opener. the

Background technique

In agricultural cultivation operations, it is necessary to form a ditch on the surface of the land for sowing and fertilizing. Agricultural production requires that the ditch opened by the sowing opener be neat in shape, consistent in depth and uniform in sowing. However, under different soil conditions, the furrows formed by the seeding openers are very different. When it works in the soil with high humidity, the soil adheres to its working surface, which leads to increased traction resistance, and the shape of the groove is irregular, which makes the depth of the seeds in the groove inconsistent and affects the quality of sowing. Therefore, reducing viscosity and drag is an important problem that should be solved for sowing openers. the

Contents of the invention

The purpose of the utility model is to solve the problems of existing sowing ditching parts such as clay and increased resistance, and to provide a ditch opener with a scale surface structure and a convex hull structure of a soil cave animal pangolin on the surface. It is formed by designing a scale-shaped structure and a convex-hull structure on the soil-contacting surface of an ordinary coreshare type sowing opener. These two bionic structures make it possible to reduce soil adhesion and work resistance. the

The utility model is composed of a core share 1, a share handle 2, a wing plate 3, a connecting plate 4, a seed delivery pipe 5 and a seed protection cover 6, and is characterized in that the upper surface of the front base body 9 of the core share 1 is regularly distributed with scale-shaped geometric shapes. The center distance L between the structure 7 and the convex-hull geometric structure 8, the scale-shaped geometric structure 7 and the convex-hull geometric structure 8 is 5-25mm. the

The utility model is based on the fact that the scale surface structure and the convex shell structure of the soil cave animal pangolin have the characteristics of wear resistance, viscosity reduction and resistance reduction, and is determined according to optimization analysis and geometric measurement. the

The surface shape of the scale-shaped geometric structure 7 is a symmetrical hexagonal structure: the side length L1 is 1-20 mm, the _L2 is 1-30 mm, the internal angle _α1 is 120-130°, and the internal angle _α2 is 100-110° , the height H ₁ of the scale-shaped geometric structure 7 is 1-4 mm, and the side inclination δ is 55-70°; the upper surface of the scale-shaped geometric structure 7 is a ribbed structure, and the shape expression of the bionic structure is: y=asin(bx +c);

Among them: a is the amplitude, b is the frequency, c is the initial phase, 0<a≤5, 0≤bx+c≤π, 0≤x≤8. the

The convex-hull geometric structure (8) is shaped like an inverted butterfly, and its bag and the bottom surface are smoothly transitioned. The bottom surface is a horizontal smooth surface. The mathematical equation of the plane is Z=0. In the three-dimensional European space XYZ, Taking the XY plane as the base, the equation of a "package" at the origin of coordinates is:

In the formula: R is the radius of the top circle, R=1~4mm; R+r is the radius of the bottom circle, R+r=5~10mm; h is the height of the convex hull, h=1~4mm; adjust R, r and h Depending on the size of the parameter, convex hulls of different shapes and sizes can be obtained. the

The scale-shaped geometric structure 7 and the convex-hull-shaped geometric structure 8 are processed integrally with the base body 9 . the

The utility model has good technical effects of alleviating soil adhesion and reducing working resistance, can improve the quality of sowing and fertilizing, and reduce power consumption. the

Description of drawings

Figure 1 is the front view of the bionic core share type sowing opener

Figure 2 is a top view of the bionic core share type sowing opener

Figure 3 is a sectional view from A to A in Figure 2

Figure 4 is a cross-sectional view of B—B in Figure 2

Figure 5 is a planar model of the scale-shaped geometric structure

Figure 6 is a partial cross-sectional view of the scale-shaped and convex-hull geometric structures

Figure 7 is a schematic diagram of the geometric parameters of the coreshare type sowing opener

Figure 8 is a schematic diagram of the geometric parameters of the core-type sowing opener

Among them: 1. Core share 2. Share handle 3. Wing plate 4. Connecting plate 5. Seed transmission tube 6. Seed protection cover 7. Scale-shaped geometric structure 8. Convex hull-shaped geometric structure 9. Base body

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail:

As shown in Figure 1, the vertical side length of the coreshare type sowing opener is H=80-140mm, the horizontal side length is L=130-170mm, the ridge curvature radius R ₁ =250-350mm, and the surface shape of the scale-shaped geometric structure 7 is Symmetrical hexagonal structure: side length L1=1～20mm, L ₂ =1～30mm, interior angle α ₁ =120～130°, interior angle α ₂ =100～110°, convex hull geometry structure 8 similar to undercut For Xiaodie, the top circle radius R=1~4mm; the bottom circle radius R+r=5~10mm; the convex hull height h=1~4mm. The distance between the centers of the two bionic structures, the scale-shaped geometric structure 7 and the convex-hull-shaped geometric structure 8, is L=5-25 mm.

As shown in Figure 5, the thickness of the conventional base 9 is D=2-4mm, the height H ₁ of the scale-shaped geometric structure 7 is 1-4mm, and the side inclination δ=55°-70°. The shape of the surface bionic structure of the scale-shaped geometric structure 7 is: y=asin(bx+c). Among them: a is the amplitude, b is the frequency, c is the initial phase, 0<a≤5, 0≤bx+c≤π, 0≤x≤8.

As shown in Figure 7, the vertical side length of the coreshare type sowing opener is H=80~140mm, the entry angle θ=15°~25°, and the clearance angle ε=5°. the

As shown in Figure 8, the bevel angle γ=60～75°, and the width B=120～180mm. the

Experiments have shown that under the same working conditions, the core share type seeding ditch opener with the bionic structure described in the utility model has improved working efficiency compared with ordinary form and non-combined steel core share type seeding ditch openers 8 to 12%, and the frictional resistance is reduced by 10 to 17%. the

Claims (4)

1. A bionic core share type sowing ditch opener, consisting of a core share (1), a share handle (2), a wing plate (3), a connecting plate (4), a seed delivery pipe (5) and a seed protection cover (6 ), which is characterized in that the upper surface of the front base (9) of the core share (1) is regularly distributed with a scale-shaped geometric structure (7) and a convex-hull geometric structure (8), and a scale-shaped geometric structure (7) and a convex-hull The center-to-center distance L between the two geometric structures (8) is 5-25 mm. the 2. The bionic coreshare type sowing opener according to claim 1, characterized in that the surface shape of the scale-shaped geometric structure (7) is a symmetrical hexagonal structure: the side length L is ₁ to 20 mm, L ₂ is 1-30mm, internal angle α ₁ is 120-130°, internal angle α ₂ is 100-110°, height H ₁ of the scale-shaped geometric structure is 1-4mm, side inclination δ is 55-70°; scale-shaped geometry The upper surface of the structure is a ribbed structure, and the shape expression of the bionic structure is: y=asin(bx+c); Among them: a is the amplitude, b is the frequency, c is the initial phase, 0<a≤5, 0≤bx+c≤π, 0≤x≤8. the 3. The bionic coreshare type seed ditch opener according to claim 1, characterized in that the convex hull-shaped geometric structure (8), its "package" and the bottom surface are smoothly transitioned, and the bottom surface is a horizontal smooth surface, the The mathematical equation of the plane is Z=0. In the three-dimensional Euclidean space xyz, with the xy plane as the base, the equation of a "package" at the origin of coordinates is: In the formula: R is the radius of the top circle, R=1~4mm; R+r is the radius of the bottom circle, R+r=5~10mm; h is the height of the convex hull, h=1~4mm. the 4. The bionic coreshare type sowing opener according to claim 1, characterized in that said scale-shaped geometric structure (7) and convex hull-shaped geometric structure (8) are integrally processed with the substrate (9). the

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