CN216873752U

CN216873752U - Bionic anti-adhesion mini-tiller blade

Info

Publication number: CN216873752U
Application number: CN202220613213.1U
Authority: CN
Inventors: 张建刚; 蒲春梅; 樊富斌; 柳雯靓; 陈卓美
Original assignee: State Grid Sichuan Electric Power Co Ltd
Current assignee: State Grid Sichuan Electric Power Co Ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-07-05
Anticipated expiration: 2032-03-21

Abstract

The utility model discloses a bionic anti-adhesion mini-tiller cutter which is characterized in that bionic non-smooth unit convex hulls are arranged on the surfaces of a cutting edge, a cutter back and a cutter head of the mini-tiller cutter, and bionic teeth are arranged on the cutting edge, so that the adhesion force between the cutter and soil can be effectively reduced, the accumulation of soil on the surface of the cutter is reduced, the resistance of the mini-tiller cutter during working is reduced, the working efficiency is improved, the service life of the cutter is prolonged, and the energy consumption is reduced. The utility model has simple structure, can be matched with various mini-tillers, is convenient for refitting the existing mini-tillers and has strong universality.

Description

Bionic anti-adhesion mini-tiller blade

Technical Field

The utility model relates to the technical field of plowing cutters, in particular to a bionic anti-adhesion mini-tiller cutter.

Background

The mini-tiller is a tilling machine taking a small diesel engine or a gasoline engine as power, has excellent soil crushing capability and capability of leveling the ground surface after tillage, can crush stubbles in soil, is convenient for seeder operation, and is widely applicable to tillage and harrowing operations in dry lands, paddy fields, orchards and other scenes in plains, mountainous areas, hills and the like by virtue of the characteristics of light weight, small size, simple structure and the like. As a big agricultural country in China, the cultivated land area is huge, the traditional cultivation tool is gradually replaced by modern mechanical cultivation machinery, a micro-cultivator becomes important agricultural machinery in China, a micro-cultivator cutter is an important component of the micro-cultivator, soil can be adhered to parts such as a cultivation plow cutter and a rotating shaft in the cultivation process of the micro-cultivator cutter, the resistance of the cutter in cultivation is increased, the cultivation efficiency is affected, the cutter is broken even when the resistance of the cutter is too large, the cutter surface of the micro-cultivator needs to be cleaned regularly after long-time high-speed cultivation, the cultivation process is blocked, and the energy consumption of the agricultural machinery is increased. At present, the micro-cultivator knife generally achieves the effect of plough drag reduction by improving the arc surface angle or the knife tooth structure of the knife, however, the problem of soil adhesion on the knife surface of the micro-cultivator is not well solved, and the improved knife surface of the micro-cultivator still needs to be cleaned regularly.

Soil animals such as earthworms, ants, dung beetles, pangolins and the like enter and exit between moist soil and sharp gravels, and move freely without adhering soil on the surface of the soil animals. The leaf surfaces of plants such as lotus leaves, rice leaves and the like can generate sludge without being dyed. The body surfaces of soil animals such as earthworms, ants, dung beetles, pangolins and the like have geometric non-smooth characteristics, namely structural unit bodies with certain geometric shapes are randomly or regularly distributed on certain parts of the body surfaces, and the unit bodies have shapes such as scaly shapes, convex bag shapes, concave pit shapes, bristle shapes, corrugated shapes and the like. In addition, mole cricket, which is a soil insect, lives underground throughout the year, and needs to dig a cave to obtain food. The forefoot of mole cricket is unusual thick, and the shape is like the shovel in the forward, and the side is the curved surface that has certain radian, and the pointed end is the square wedge, and direct and soil action when excavating the motion can reduce actual area of touching soil, reduces the frictional force of wedging into soil, resistance when reducing excavation soil. Based on the analysis, the existing micro-cultivator knife is improved, and the bionic anti-adhesion micro-cultivator knife is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of reducing the adhesion between the working surface of a cutter and soil, and aims to provide a bionic anti-adhesion micro-tillage machine cutter which can solve the problems of adhesion between the working surface of the cutter and the soil, efficient soil crushing and efficient weed smashing.

The utility model is realized by the following technical scheme:

the utility model provides a bionical anti-adhesion machine sword of ploughing a little, includes center pin, blade disc and bionical blade, it is a plurality of to distribute on the length direction of center pin the blade disc, the circumference of blade disc distributes and has a plurality ofly to be connected rather than bionical blade, bionical blade includes handle of a knife, back of a knife blade and cutting edge all are connected with the handle of a knife, the surface of blade disc, cutting edge and back of a knife blade is provided with a plurality of non-smooth unit convex hulls, the cutting edge is provided with a plurality of bionic teeth, and is 4 a set of is constituteed to the bionic tooth, and is the same group the top envelope curve of bionic tooth is the parabola. Through the structural design, the adhesion between the micro-cultivator cutter and the soil is effectively reduced, and the crushing capacity of the micro-cultivator cutter is enhanced.

As a preferable technical scheme of the utility model, the cutter head is of a plate body structure, the cutter head is connected with the central shaft in a mode of reinforcing a set screw by a shaft sleeve, and the outer surface of the shaft sleeve is provided with a plurality of non-smooth unit convex hulls so as to reduce the adhesive force between the shaft sleeve and soil.

As a preferred technical scheme of the utility model, the cutter head and the cutter handle are provided with matched mounting holes, and the cutter head and the cutter handle are connected together through screws.

As a preferred technical scheme, the cutter heads are of square plate structures, 2-8 bionic blades are installed on each cutter head, and the phase angle of the bionic blades installed on the adjacent cutter heads is 30-90 degrees.

As a preferred technical scheme of the utility model, the non-smooth unit convex hulls are not arranged on the surfaces of the cutter handle of the bionic blade and the cutter head which are contacted with each other, so that the bionic blade is convenient to be attached to the cutter head for installation.

As a preferred technical scheme of the utility model, the central points of every three non-smooth unit convex hulls form the vertexes of an equilateral triangle.

As a preferable technical scheme of the utility model, the total surface area of the non-smooth unit convex hulls is 60-85% of the total surface area of the micro-tillage machine knife.

As a preferred technical scheme of the utility model, the contour of the non-smooth unit convex hull is semi-spherical, and the relation among the section structure parameter included angle theta, the radius R, the depth h and the width d is

And

in a preferred technical scheme of the utility model, the bionic tooth profile is a fitting curve of the cricket paws and toes.

As a preferred technical scheme of the utility model, included angles of the top ends of 4 bionic teeth in the same group are respectively equal to or larger than 20 degrees and equal to or smaller than 26.3 degrees, equal to or larger than 18 degrees and equal to or smaller than 20.3 degrees, equal to or larger than 23 degrees and equal to or smaller than 25.9 degrees, and equal to or larger than 20 degrees and equal to or smaller than 23.2 degrees.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. this kind of bionical anti-adhesion micro-tillage machine knife through set up a plurality of non-smooth unit convex hulls at center pin, blade disc, cutting edge and back of a knife blade surface to and set up bionic tooth on the cutting edge, effectively reduced the adhesion between cutter and the soil, strengthened the crushing ability of cutter, and then improved work efficiency, prolonged the life of cutter, reduced the consumption of the energy simultaneously.

2. The device simple structure can match the quick-witted of multiple type machine of ploughing a little, is convenient for reequip current machine of ploughing a little, and the commonality is strong.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:

fig. 1 is a front view of a bionic anti-adhesion mini-tiller according to an embodiment of the utility model;

FIG. 2 is a front view of a central shaft of a bionic anti-adhesion mini-tiller blade according to the present invention;

FIG. 3 is a front view of a connecting surface of a bionic blade and a cutter head of the bionic anti-adhesion mini-tiller cutter of the utility model;

FIG. 4 is a front view of the other side of the bionic blade of the bionic anti-adhesion mini-tiller blade of the present invention;

FIG. 5 is a schematic diagram of a single bionic non-smooth cell convex hull;

FIG. 6 is a schematic structural view of a set of biomimetic teeth of the biomimetic blade;

reference numbers and corresponding part names in the drawings:

1-central shaft, 2-cutter head, 3-fixing screw, 4-bionic blade, 5-non-smooth unit convex hull, 6-mounting hole and 7-bionic tooth.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known structures, materials, or methods have not been described in detail in order to avoid obscuring the present invention.

Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the utility model. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention.

Examples

The present embodiment provides a bionic anti-adhesion mini-tiller blade, as shown in fig. 1 to 6,

the utility model discloses a bionic anti-adhesion mini-tiller cutter which comprises a central shaft 1, a cutter head 2 and bionic blades 4, wherein the cutter head 2 is distributed in the length direction of the central shaft 1, the bionic blades 4 connected with the cutter head 2 are distributed in the circumferential direction of the cutter head 2, the bionic blades 4 comprise a cutter handle, a cutter back and a cutter edge, and the cutter back and the cutter edge are connected with the cutter handle. Through the structural design, the adhesion between the micro-cultivator cutter and the soil can be effectively reduced, and the crushing capacity of the micro-cultivator cutter is enhanced.

The cutter head 2 is of a plate body structure, is connected with the central shaft 1 in a shaft sleeve and fixing screw 3 mode, and is provided with a plurality of non-smooth unit convex hulls 5 on the outer surface of the shaft sleeve so as to reduce the adhesion between the shaft sleeve and soil.

The cutter head 2 and the cutter handle are provided with matched mounting holes 6, and the cutter head 2 and the cutter handle are connected together through fixing screws 3.

Wherein, blade disc 2 is square plate body structure, every 2 ~ 8 bionical blades 4 of blade disc 2 installation are installed adjacently the phase angle of bionical blade 4 on the blade disc 2 is 30 ~ 90.

Wherein, the handle of a knife of bionic blade 4 with the surface that blade disc 2 contacted each other does not set up non-smooth unit convex closure 5 to make bionic blade 4 be convenient for laminating blade disc 2 and install

Wherein, the central points of every three non-smooth unit convex hulls 5 form the vertexes of an equilateral triangle.

Wherein the total surface area of the non-smooth unit convex hull 5 is 60-85% of the total surface area of the micro-tillage machine knife.

Wherein, the outline of the non-smooth unit convex hull 5 is in a semi-sphere shape, and the relationship among the section structure parameter included angle theta, the radius R, the depth h and the width d is

And

wherein, the profile of the bionic teeth 7 is a fitting curve of the cricket paws and toes.

Wherein the included angles of the top ends of 4 bionic teeth 7 in the same group are respectively equal to or more than 20 degrees and equal to or less than 26.3 degrees of a, equal to or more than 18 degrees and equal to or less than 20.3 degrees of b, equal to or more than 23 degrees and equal to or less than 25.9 degrees of c, and equal to or more than 20 degrees and equal to or less than 23.2 degrees of d.

The working principle is as follows: through set up bionical non-smooth unit convex closure on the surface at the center pin of micro-tillage machine knife, cutting edge and the back of a knife blade to and set up bionic tooth on the cutting edge, can effectively reduce the adhesion between cutter and the soil, reduce earth and stay in the long-pending on cutter surface, reduced the resistance of micro-tillage machine knife during operation, and then improved work efficiency, prolonged the life of cutter, still reduce the consumption of the energy simultaneously. The utility model has simple structure, can be matched with various mini-tillers, is convenient for modifying the existing mini-tillers and has strong universality.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a bionical anti-adhesion micro-tillage machine knife, includes center pin (1), blade disc (2) and bionical blade (4), it is a plurality of to distribute on the length direction of center pin (1) blade disc (2), the circumference of blade disc (2) distributes and has a plurality ofly to be connected bionical blade (4), bionical blade (4) include handle of a knife, back of a knife blade and cutting edge all are connected with the handle of a knife, its characterized in that, the surface of blade disc (2), cutting edge and back of a knife blade is provided with a plurality of non-smooth unit convex hulls (5), the cutting edge is provided with a plurality of bionical teeth (7), and is 4 a set ofly bionical tooth (7) are constituteed, and are the same group the top envelope curve of bionical tooth (7) is the parabola.

2. The bionic anti-adhesion mini tiller blade of claim 1, characterized in that the blade disc (2) is a plate structure, and is connected with the central shaft (1) by means of a shaft sleeve and a fixing screw (3), and the outer surface of the shaft sleeve is provided with a plurality of non-smooth unit convex hulls (5).

3. The bionic anti-adhesion mini-tiller blade of claim 1, characterized in that the blade disc (2) and the hilt are provided with matching mounting holes (6), and the blade disc (2) and the hilt are connected together through fixing screws (3).

4. The bionic anti-adhesion mini tiller blade of claim 3, characterized in that the cutterhead (2) is of a square plate structure, 2-8 bionic blades (4) are installed on each cutterhead (2), and the phase angle of the bionic blades (4) installed on the adjacent cutterhead (2) is 30-90 degrees.

5. The bionic anti-adhesion mini-tiller blade of claim 3, characterized in that the surface of the bionic blade (4) where the handle and the cutterhead (2) are in contact with each other is not provided with the non-smooth unit convex hull (5).

6. The bionic anti-adhesion mini-tiller according to claim 1, characterized in that the central points of every three non-smooth unit convex hulls (5) form the vertexes of an equilateral triangle.

7. The bionic anti-adhesion mini tiller blade of claim 1, wherein the total surface area of the non-smooth unit convex hull (5) is 60% -85% of the total surface area of the mini tiller blade.

8. The bionic anti-adhesion mini-tiller blade as claimed in claim 1, wherein the non-smooth unit convex hull (5) has a semi-spherical contour, and the relationship among the cross-sectional structure parameters including the included angle θ, the radius R, the depth h and the width d is as follows

And

9. the bionic anti-adhesion mini tiller blade of claim 1, wherein the profile of the bionic teeth (7) is a fitted curve of the cricket paws and toes.

10. The bionic anti-adhesion mini-tiller tool as claimed in claim 1, characterized in that included angles of the top ends of 4 bionic teeth (7) in the same group are respectively 20 degrees to 26.3 degrees, 18 degrees to 20.3 degrees, 23 degrees to 25.9 degrees, and 20 degrees to 23 degrees to 23.2 degrees.