阅读说明：本技术 深松铲仿生鲨鱼皮表面结构的设计 (Design of bionic sharkskin surface structure of subsoiler ) 是由 骆通运 解加庆 张军昌 陈军 周天丰 衣杰 崔轶立 于 2019-09-14 设计创作，主要内容包括：本发明公开了一种深松铲仿生鲨鱼皮表面结构的设计,包括仿生鲨鱼非光滑表面凸起建模方法,缩放比例以及与深松铲铲面接触的排布方向,其特征在于：具有一定尺寸要求和形状要求的仿生鲨鱼皮表面。仿生鲨鱼皮表面结构与深松铲表面以一定的方向贴合,本发明的优点有：提取了鲨鱼皮的表面特征,减小了深松铲与土壤接触的正压力,对土壤具有一定的导向性降低了深松耕的摩擦损耗。(The invention discloses a design of a surface structure of a bionic sharkskin of a subsoiler, which comprises a bionic shark non-smooth surface bulge modeling method, a scaling and an arrangement direction in contact with a surface of the subsoiler, and is characterized in that: has a bionic shark skin surface with certain size and shape requirements. The bionic sharkskin surface structure is attached to the surface of the subsoiler in a certain direction, and the bionic sharkskin subsoiler has the advantages that: the surface characteristics of the sharkskin are extracted, the positive pressure of the subsoiler in contact with the soil is reduced, a certain guidance is provided for the soil, and the friction loss of subsoiling is reduced.)

1. The design of the bionic sharkskin surface structure of the subsoiler is characterized in that: (1) having a polynomial fit equation along the shark swimming direction:

(2) Along a shark longitudinal section with a gaussian fit formula:

Modeling of a simulated sharkskin using the sameThe formula is used for drawing a sketch and modeling by adopting a scanning characteristic method.

2. the design of the bionic shark skin surface structure of the subsoiler of claim 1, wherein: the non-smooth protruding structure on the surface of the bionic sharkskin is attached to the national standard subsoiler and does not move relative to the national standard subsoiler.

3. The design of the bionic shark skin surface structure of the subsoiler of claim 1, wherein: the arrangement direction of the linear array on the subsoiler is the projection direction of a horizontal line which is right opposite to the subsoiler on the shovel surface.

Technical Field

The invention relates to the technical field of soil subsoiling, in particular to a design and coupling technology for a non-smooth surface of a bionic sharkskin structure of a subsoiling shovel.

Technical Field

The deep scarification cultivated land can deepen a plough layer, improve the soil structure and loosen and ventilate. The soil layer can not be turned over in the deep scarification mode, so that the vegetation on the soil surface is still in the position of the soil surface, and the soil is protected to avoid the soil from being eroded by too fast wind. The water storage capacity can be improved by deep scarification, the water storage capacity of deep scarified soil is 2 times of that of shallow ploughing, and the water permeability of different types of soil can be improved by 5-7 times. The subsoiling shovel is adopted for subsoiling and ploughing, so that the water storage capacity of the soil can be improved, and the washing of surface runoff on the soil can be favorably relieved. However, the subsoiler is subjected to a resistance of up to 3000N in the soil, and therefore a tractor of relatively high power is generally required to work in conjunction with the subsoiler. The obvious disadvantage of deep scarification is that energy is consumed too much due to the resistance of soil.

The shark surface scale is scutellum, is formed by covering ivory on a medullary cavity, and is covered with a layer of enamel. Has the functions of self-cleaning and drag reduction. The bionic sharkskin swimsuit has very obvious resistance reducing characteristic.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a design of a bionic sharkskin surface structure of a subsoiler, which has the excellent properties of reducing the positive pressure of soil, draining the soil and automatically cleaning the surface. Even if the non-smooth bulges on the surface are abraded due to long-term abrasion, the deep scarification shovel can still be used as a common deep scarification shovel without causing damage to soil or machinery.

In order to achieve the purpose, the invention provides the following technical scheme: extracting the characteristic of the shark surface structure, and processing the shark surface structure. The method is characterized in that: modeling is carried out on the shark surface structure and the subsoiler surface structure by using Solidworks modeling software, and array and assembly of the shark surface are carried out through a Solidworks assembly module.

Further, the extraction of shark surface features is measured by confocal laser microscopy and the main parameters of the surface structure are obtained.

Further, the shark surface structure processing comprises drawing of structure parameters in Solidworks software and a characteristic principle. Obtaining a profile polynomial fitting formula of a single sharkskin along the shark moving positive direction, namely a cross section through curve fitting of matlab software:

the definition domain is [0,210]. The gaussian curve fitting formula for the longitudinal section is:

Definition domain [0,110]. The equation-driven curve is plotted by a Solidworks sketch equation-driven curve, and the domain and the value domain are noted. And (5) completely drawing the curves in the two orthogonal directions, and performing scanning characteristics. The profile orientation is selected to remain normal.

Further, the shark surface structure treatment comprises a scaling of the surface structure; the scaling ratio is selected to be 0.025 in total in Solidworks; i.e. scaling to a 1:1 dimension on the micrometer scale, followed by 25 times magnification to couple with the subsoiler surface.

further, the shark surface structure processing comprises the arrangement direction of the projection direction of the horizontal direction opposite to the shovel surface on the shovel surface.

Further, the shark surface structure processing comprises a total of 5 x 5 linear arrays; one of the directions is a longitudinal section direction and the other is a cross-sectional direction.

Further, the shark surface texture processing comprises a linear array in an assembly drawing; the linear array direction is a horizontal speed direction and a projection direction along a vertical shovel surface direction; the number of linear arrays is standard to cover the subsoiler surface completely. Removing the redundant bionic shark surface by stretching and cutting; the subsoiler is JB/T9788-1999 standard subsoiler and subsoiler handle, and the bionic surface structure and the subsoiler surface are completely fixed and have no relative displacement.

the invention has the advantages that: in order to reduce viscosity and resistance, a brand-new surface non-smooth bulge is provided, and a bionic method is utilized to carry out modeling and experiments; the positive pressure value of the soil and the shovel surface can be greatly reduced, so that the resistance of the soil to the surface of the subsoiler is reduced; the bionic application of the sharkskin to the resistance reduction of the soil improves the subsoiling and tilling efficiency.

Drawings

FIG. 1 is a view showing a structure of the surface of a bionic shark skin;

Fig. 2 is an assembly schematic of the present invention.

Detailed Description

The invention is further explained below with reference to the drawings and the embodiments. As shown in figures 1 and 2, the design of the bionic sharkskin surface structure of the subsoiler of the invention, the non-smooth surface of the bionic sharkskin, and the national standard double-wing subsoiler are characterized in that: additive manufacturing, surface roughness machining was performed by SLM150 metal 3D printer. The arrangement direction of the surface structures is arranged along the horizontal direction in the projection direction of each shovel surface. The shovel moves under the driving of a shovel handle of a national standard subsoiler. The fixed connection is common bolt connection.

when the subsoiler moves in the soil, the soil moves along the arrangement direction of the bionic sharkskin on the surface of the subsoiler. The bionic sharkskin surface can reduce the contact area of soil and the shovel surface, so that the positive pressure is reduced, and the bionic sharkskin has certain guidance for the soil. Therefore, the subsoiler on the bionic sharkskin surface has the functions of the national standard subsoiler in the moving process, and the contact area between the subsoiler and soil can be reduced. The drag reduction function is realized.

It will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in the embodiments described above without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims.