CN109511327B - Coupling bionic double-disc furrow opener suitable for viscous-weight soil - Google Patents
Coupling bionic double-disc furrow opener suitable for viscous-weight soil Download PDFInfo
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- CN109511327B CN109511327B CN201811464225.7A CN201811464225A CN109511327B CN 109511327 B CN109511327 B CN 109511327B CN 201811464225 A CN201811464225 A CN 201811464225A CN 109511327 B CN109511327 B CN 109511327B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C5/00—Making or covering furrows or holes for sowing, planting or manuring
- A01C5/06—Machines for making or covering drills or furrows for sowing or planting
- A01C5/062—Devices for making drills or furrows
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Abstract
The invention relates to a coupling bionic double-disc furrow opener suitable for viscous-weight soil, and belongs to the field of agricultural mechanical equipment. According to the invention, the outer surfaces of two discs of the double-disc furrow opener are provided with the ellipsoidal curved convex hulls which are arranged along the circumference of the discs, one side of the ellipsoidal curved convex hulls, which is close to the center of the discs, is provided with the flexible micro-thorns, the ellipsoidal curved convex hulls and the flexible micro-thorns are connected into a whole, so that a micro-thorn convex hull coupling bionic surface structure is formed, and the structure is uniformly distributed along the circumference radial direction on the working surface of the disc, and a plurality of layers of structures are uniformly arranged. In the working process of the furrow opener, the serrated cutting edge can reduce the contact area with soil, and the furrow opening resistance is reduced; contact of the disc surface with the soil will form a film of water. The bionic surface structure of the micro-thorn convex hull can destroy the continuity of a water film, reduce adhesion and reduce friction resistance, meanwhile, the flexible micro-thorn can be subjected to friction deformation, and tiny vibration can be generated during soil emergence, so that soil blocks adhered to the surface of the disc are easier to fall off, and the ditching quality and the working efficiency are improved.
Description
Technical Field
The invention relates to a coupling bionic double-disc furrow opener suitable for viscous-weight soil, and belongs to the technical field of agricultural mechanical equipment.
Background
The double-disc furrow opener is an important working part on a no-tillage planter, and the principle is that two rotating plane discs are utilized to cut soil, and the soil is pushed to two sides to form a seed furrow with consistent depth and flat furrow shape. The disc surface of the common double-disc furrow opener is smooth plane, and in the furrow opening process, the disc surface is adhered due to capillary force and viscous force caused by continuous water ring or water film of a contact interface when being contacted with soil, so that soil disturbance can be increased, continuous water ring or water film is formed, the soil is not easy to fall off when being adhered on the disc surface, furrow opening resistance is increased, and furrow opening quality is affected.
The characteristics and the morphology of the bionics are the blue book, and the bionics are simulated by means of modern technical means to realize specific technical functions and targets. Certain functions of organism surface tissue organs are applied to the design of agricultural machinery so as to meet the requirement that engineering technology is the combination of bionics and agricultural machinery design and manufacture.
The research shows that a plurality of soil cave animals with high-efficiency excavation capability in the nature, such as mole cricket (Gryllotalpa orientalis Burmeister), mole rat (Scaptochirus moschatus), stink dung beetle (Copris ochus Motchulsky), pangolin scales (Manis pentadactyla) and the like, have special structures and forms for excavating the outer edge wheel of the soil limbs, and the special structures and forms enable the paws and the toes of the soil cave animals to easily cut into the soil during the soil excavation, and realize high-efficiency continuous excavation. The energy consumption is reduced to the maximum extent, the working efficiency is improved, and the characteristics can provide good reference for the bionic design of agricultural machinery.
The design of the shape and structure of the soil-contacting component by taking the bionics as a research means has made breakthrough progress in reducing the adhesion and resistance of soil to the soil-contacting component, but when agricultural implements are used in soil with sticky moisture, the complexity of soil behaviors makes the anti-sticking and anti-drag difficult to be well controlled, the adhesion of soil seriously reduces the operation efficiency and the operation quality of ground machinery, increases the energy consumption, and even makes the machinery incapable of operating.
However, the currently known soil-contacting components of dry farmland agricultural machinery with bionic geometric structures often adopt a single-surface convex hull form, and although the soil-contacting components have excellent operation effects in dry farming areas, the soil-contacting components have a certain restriction effect on the anti-sticking and drag-reducing effects of soil in the practical popularization of paddy field operation areas with sticky soil, and the soil characteristics and the anti-sticking and drag-reducing requirements are different in wide paddy field areas in China. Aiming at the problems, the bionic geometric structure form of the surface of the soil-contacting part of the agricultural implement needs to be optimized to the greatest extent, so that the anti-sticking and drag-reducing capabilities of the soil-contacting part of the agricultural implement are stronger, and the soil-contacting part of the bionic agricultural implement with more excellent performance is popularized in various areas of China.
Disclosure of Invention
The invention aims at solving the problems in the prior art, and designs a coupled bionic double-disc furrow opener structure suitable for sticky soil, which can effectively reduce the adhesion of the disc surface during working, reduce the resistance of the furrow opener during working, improve the furrow opening quality and the working efficiency, and facilitate the subsequent fertilization and sowing operations.
The technical scheme of the invention is as follows: the utility model provides a coupling bionical double round disc furrow opener suitable for gluey heavy soil, all set up along the oval curved surface convex closure 2 of disc circumference range at the surface of two discs 1 of double round disc furrow opener, set up flexible thorn 3 in oval curved surface convex closure 2 near disc 1 center one side, oval curved surface convex closure 2 is connected as an organic wholely with flexible thorn 3, forms a little thorn convex closure coupling bionical surface structure 4, this structure is radial evenly distributed along circumference at disc 1 working face, evenly arranges the multilayer.
Further, the cutting edge of the disc 1 is provided with a bionic sawtooth geometry mechanism 5, and the contour curve is as follows: y=nx 2 Wherein the value range of n is 0.12-0.5, and the value range of x is-18 mm.
Further, the thickness l=3-8 mm of the single disc 1 in the double-disc furrow opener; wherein, the distance P=5-25 mm from the ellipsoidal curved convex hull 2 distributed on the outermost layer of the disc 1 to the outer edge of the cutting edge of the disc 1.
Further, the ellipsoidal curved convex hull 2 is an ellipsoid with a bionic structure, and the equation is as follows:
wherein: the value range of the parameter a is 8-20, the value range of the parameter b is 5-15, and the value range of the parameter c is 1.5-4.5.
Further, the spherical crown height H=0.6L-0.8L of the ellipsoidal curved surface convex hull 2; the length M=4L-6L of the ellipsoidal curved convex hull 2; the width N=1.5L-3L of the ellipsoidal curved convex hull 2; wherein L is the thickness of a single disc 1 in the double-disc furrow opener, and l=3-8 mm.
Further, the number m=5-15 of the flexible micro-thorns 3 arranged on the single ellipsoidal curved convex hull 2, the shape of the flexible micro-thorns 3 is a long cylinder, the top end of the long cylinder is a hemisphere, the diameter D2 of the long cylinder is the same as the diameter D3 of the hemisphere at the top end of the long cylinder, the length S=3-12 mm of the flexible micro-thorns 3, and D2=0.3H-0.6H.
Further, an included angle a=6-12° between a connecting line of the central point of the single-column ellipsoidal curved convex hull 2 on the disc 1 projected onto the disc 1 and a connecting line of the central point of the ellipsoidal curved convex hull 2 on the adjacent column projected onto the disc 1, and the interval of each layer is b=0.8N-2.4N.
The flexible micropuncture 3 is made of polyvinyl chloride PVC or polyethylene PE.
The working principle of the invention is as follows:
in the invention, the design of the micro-thorn convex hull coupling bionic surface structure 4 is developed on the basis of research and analysis of procambarus clarkia (Procambarus clarkii), the procambarus clarkia inhabits the soil of a wetland, a river bank or a paddy field, moves freely in viscous slurry and is good for digging holes in the soil, and the skeleton of the procambarus clarkia has excellent properties of viscosity reduction, resistance reduction, antifriction and the like, and particularly is more representative of the head and chest which is directly contacted with the soil.
The surface of the chelating part of procambarus clarkia is distributed with an obvious ellipsoidal convex hull structure, one side of the ellipsoidal convex hull structure is distributed with bristles, and a certain gap exists between adjacent bristles. The ellipsoidal curved surface convex hull structure enables the surface of the chelating part to present a non-smooth surface to play a role in destroying a continuous water film and reducing the contact area with soil so as to realize desorption and play roles in reducing viscosity, resistance and antifriction. The surface of the chelating part has a certain curvature, which is favorable for reducing the contact area with soil when the chelating part digs holes, is similar to the shape of the front foot surface of the soil digger of mole cricket, bristles on the surface with a certain curvature are subjected to the pressure of the soil, and can generate elastic deformation and microseism when the bristles relatively move with the soil, so that the soil is easier to separate from the surface of the chelating part.
The ellipsoidal curved convex hull 2 can destroy the continuity of a water film formed by the contact of the surface of the disc 1 and soil, and can reduce the adhesiveness of the soil, thereby reducing the ditching resistance; the flexible micropuncture 3 has good elasticity, is not easy to break, has good mechanical property, is extruded and deformed in the process of being contacted with the soil, and is recovered to the original state due to maintaining the mechanical property of the flexible micropuncture during the soil outlet, in the process, the flexible micropuncture can generate fine vibration, the adhesion of the soil can be reduced, the soil is easier to fall off on the stool surface of the disc, the contact area between the soil and the surface of the disc is reduced by numerous micropunctures, the working resistance is reduced, the surface of the disc is not easy to form a water film, and the desorption resistance reduction effect is realized.
At present, circular arc-shaped disc cutting edges of the double-disc furrow openers are commonly adopted, the invention takes the microscopic form of the head exoskeleton of procambarus clarkii as a bionic prototype, and according to the technical means of reverse engineering, the bionic serrated cutting edges are designed, so that the contact area with the sticky soil can be reduced, the soil penetration resistance is reduced, and the soil crushing and stubble cleaning capability is stronger. The convex hull widely adopted in the prior art is spherical, the body surface shape of procambarus clarkii is taken as a bionic prototype, an ellipsoidal convex hull is designed and developed according to a reverse engineering technical means, and flexible micro-thorns are arranged on one side of the convex hull, so that a novel micro-thorn convex hull coupling bionic surface structure is formed. When the surface of the disc contacts with the clay soil, the ellipsoidal convex hulls can destroy the continuity of water film formation, and the flexible micro-thorns can generate micro vibration, so that soil blocks are easier to fall off from the surface of the disc, and the better anti-sticking and anti-drag beneficial effects can be achieved.
The beneficial effects of the invention are as follows: the double-disc furrow opener can reduce the contact area with soil, reduce the soil penetration resistance, form a continuous water ring or a water film when the disc surface is contacted with the soil, and the many ellipsoidal curved convex hulls on the disc surface destroy the continuity of the water film, so that the contact area of the disc surface and the soil is reduced by flexible micropunctures, the water film is not easy to continuously form, the adhesive force of the soil is reduced, soil blocks are easier to fall off on the disc surface, meanwhile, the flexible micropunctures can elastically deform when contacting the soil, the original mechanical property can be kept when the soil is discharged, and the tiny vibration can be generated, so that the adhesive force of the soil is further reduced, the soil blocks are easier to fall off, the disc can not have the adhesion phenomenon, the working resistance of the furrow opener is reduced, the furrowing quality and the working efficiency are improved, and the follow-up fertilization and sowing operation are facilitated.
Drawings
FIG. 1 is a schematic general construction of the present invention;
FIG. 2 is a schematic view of the disk structure of the present invention;
FIG. 3 is a left side cross-sectional view of the ellipsoidal curved surface convex hull of the present invention;
FIG. 4 is a left side view of the micropin of the present invention;
FIG. 5 is a top view of an ellipsoidal curved convex hull and micropunctures of the present invention;
fig. 6 is a front view of the serrated edge of the disk of the present invention.
The reference numerals in fig. 1-6: 1-a disc, 2-an ellipsoidal curved convex hull, 3-a flexible micro-thorn, 4-a micro-thorn convex hull coupling bionic surface structure and 5-a bionic sawtooth geometry mechanism.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
Example 1: as shown in fig. 1-6, a coupling bionic double-disc furrow opener suitable for clay soil is provided, an ellipsoidal curved convex hull 2 arranged along the circumference of a disc is arranged on the outer surfaces of two discs 1 of the double-disc furrow opener, a flexible micro-thorn 3 is arranged on one side of the ellipsoidal curved convex hull 2 close to the center of the disc 1, the ellipsoidal curved convex hull 2 and the flexible micro-thorn 3 are connected into a whole to form a micro-thorn convex hull coupling bionic surface structure 4, and the structure is uniformly distributed on the working surface of the disc 1 along the circumference radial direction and uniformly arranged in 5 layers.
Further, the cutting edge of the disc 1 is set as a bionic sawtooth geometry mechanism 5, and the contour curve is as follows: y=0.3 x 2 The value of x is-18 mm (i.e. the end point value in the range can be any value in the end point range).
Further, the thickness l=4mm of the individual disks 1 in the double-disk furrow opener; wherein, the distance P=5mm from the ellipsoidal curved convex hull 2 distributed on the outermost layer of the disc 1 to the outer edge of the cutting edge of the disc 1.
Further, the ellipsoidal curved convex hull 2 is an ellipsoid with a bionic structure, and the equation is as follows:
wherein: the value range of the parameter a is 8-20 (i.e. the range can take the endpoint value, any value in the endpoint range), the value range of the parameter b is 5-15 (i.e. the range can take the endpoint value, any value in the endpoint range), and the value range of the parameter c is 1.5-4.5 (i.e. the range can take the endpoint value, any value in the endpoint range).
Further, the spherical crown height h=0.75l=3mm of the ellipsoidal curved surface convex hull 2; the length m=5l=20mm of the ellipsoidal curved convex hull 2; the width n=3l=12mm of the ellipsoidal curved convex hull 2; where L is the thickness of the individual disks 1 in the double disk furrow opener, l=4 mm.
Further, the number m=5 of the flexible micropins 3 arranged on the single ellipsoidal curved convex hull 2, the shape of the flexible micropins 3 is a long cylinder, the top end of the long cylinder is a hemisphere, the diameter D2 of the long cylinder is the same as the diameter D3 of the hemisphere at the top end of the long cylinder, the lengths of the flexible micropins 3 are 5mm, 4mm, 3mm, 4mm and 5mm respectively, and D2=0.3H=0.9 mm.
Further, an included angle a=9° between a connecting line of the central point of the single-column ellipsoidal curved convex hull 2 on the disc 1 projected onto the disc 1 and a connecting line of the central point of the ellipsoidal curved convex hull 2 on the adjacent column projected onto the disc 1 is set at a spacing of b=1.5n=18mm.
Further, the flexible micropunctures 3 are made of polyvinyl chloride PVC or polyethylene PE.
The bionic coupling double-disc furrow opener in the embodiment is structurally characterized in that: the saw teeth of the disc cutting edge are smaller, the arrangement quantity is more, the soil penetrating capability is strong, the volume of the ellipsoidal curved convex hull is smaller, and the radial included angle of the bionic coupling surface structure of the micro-thorn convex hull is smaller, so that the ellipsoidal curved convex hulls on the surface of the disc are densely arranged, the contact area between soil and the surface of the disc is reduced, the adhesion of the soil is reduced, the micro-thorn quantity is less, the processing is convenient, and the cost is saved; compared with the common double-disc furrow opener, the desorption drag reduction capability is stronger, the furrow opening quality and the working efficiency are improved, and the double-disc furrow opener is suitable for regional operation of heavy soil.
Example 2: as shown in fig. 1-6, a coupling bionic double-disc furrow opener suitable for clay soil is provided, an ellipsoidal curved convex hull 2 arranged along the circumference of a disc is arranged on the outer surfaces of two discs 1 of the double-disc furrow opener, a flexible micro-thorn 3 is arranged on one side of the ellipsoidal curved convex hull 2 close to the center of the disc 1, the ellipsoidal curved convex hull 2 and the flexible micro-thorn 3 are connected into a whole to form a micro-thorn convex hull coupling bionic surface structure 4, and the structure is uniformly distributed on the working surface of the disc 1 along the circumference radial direction and uniformly arranged in 3 layers.
Further, the cutting edge of the disc 1 is set as a bionic sawtooth geometry mechanism 5, and the contour curve is as follows: y=0.3 x 2 The value of x is-18 mm (i.e. the end point value in the range can be any value in the end point range).
Further, the thickness l=6mm of the single disc 1 in the double-disc furrow opener; wherein, the distance P=8mm from the ellipsoidal curved convex hull 2 distributed on the outermost layer of the disc 1 to the outer edge of the cutting edge of the disc 1.
Further, the ellipsoidal curved convex hull 2 is an ellipsoid with a bionic structure, and the equation is as follows:
wherein: the value range of the parameter a is 8-20 (i.e. the range can take the endpoint value, any value in the endpoint range), the value range of the parameter b is 5-15 (i.e. the range can take the endpoint value, any value in the endpoint range), and the value range of the parameter c is 1.5-4.5 (i.e. the range can take the endpoint value, any value in the endpoint range).
Further, the spherical crown height h=4mm of the ellipsoidal curved surface convex hull 2; the length m=28mm of the ellipsoidal curved convex hull 2; the width n=18mm of the ellipsoidal curved convex hull 2; where L is the thickness of the individual disks 1 in the double disk furrow opener, l=6 mm.
Further, the number m=8 of the flexible micropins 3 arranged on the single ellipsoidal curved convex hull 2, the shape of the flexible micropins 3 is a long cylinder, the top end of the long cylinder is a hemisphere, the diameter D2 of the long cylinder is the same as the diameter D3 of the hemisphere at the top end of the long cylinder, the length S=3-12 mm of the flexible micropins 3, and D2=1.8 mm.
Further, an included angle a=12° between a connecting line of the central point of the single-column ellipsoidal curved convex hull 2 on the disc 1 projected onto the disc 1 and a connecting line of the central point of the ellipsoidal curved convex hull 2 of the adjacent column projected onto the disc 1 is set at a distance of b=20mm.
Further, the flexible micropunctures 3 are made of polyvinyl chloride PVC or polyethylene PE.
The bionic coupling double-disc furrow opener in the embodiment is structurally characterized in that: the saw teeth of the disc cutting edge are larger, the arrangement quantity is more, the soil penetrating capacity is stronger, the volume of the ellipsoidal curved convex hull is larger, and the radial included angle of the bionic coupling surface structure of the micro-thorn convex hull is larger, so that the ellipsoidal curved convex hull on the surface of the disc is arranged sparsely, but the contact area between soil and the surface of the disc is reduced, the adhesion of the soil is reduced, and the micro-thorn quantity is more; compared with the common double-disc furrow opener, the double-disc furrow opener has certain desorption resistance-reducing capability, can improve the furrow quality and the working efficiency, and is suitable for regional operation of sticky soil.
Example 3: as shown in fig. 1-6, a coupling bionic double-disc furrow opener suitable for clay soil is provided, an ellipsoidal curved convex hull 2 arranged along the circumference of a disc is arranged on the outer surfaces of two discs 1 of the double-disc furrow opener, a flexible micro-thorn 3 is arranged on one side of the ellipsoidal curved convex hull 2 close to the center of the disc 1, the ellipsoidal curved convex hull 2 and the flexible micro-thorn 3 are connected into a whole to form a micro-thorn convex hull coupling bionic surface structure 4, and the structure is uniformly distributed on the working surface of the disc 1 along the circumference radial direction and is uniformly arranged in multiple layers.
Further, the cutting edge of the disc 1 is set as a bionic sawtooth geometry mechanism 5, and the contour curve is as follows: y=nx 2 Wherein, the value range of n is 0.12, the value range of x is-18 mm (namely, the endpoint value in the range can be any value in the endpoint range).
Further, the thickness l=3 mm of the single disc 1 in the double-disc furrow opener; wherein, the distance P=5mm from the ellipsoidal curved convex hull 2 distributed on the outermost layer of the disc 1 to the outer edge of the cutting edge of the disc 1.
Further, the ellipsoidal curved convex hull 2 is an ellipsoid with a bionic structure, and the equation is as follows:
wherein: the value range of the parameter a is 8-20 (i.e. the range can take the endpoint value, any value in the endpoint range), the value range of the parameter b is 5-15 (i.e. the range can take the endpoint value, any value in the endpoint range), and the value range of the parameter c is 1.5-4.5 (i.e. the range can take the endpoint value, any value in the endpoint range).
Further, the spherical crown height h=0.6l of the ellipsoidal curved convex hull 2; the length m=4l of the ellipsoidal curved convex hull 2; the width n=1.5l of the ellipsoidal curved convex hull 2; where L is the thickness of the individual disks 1 in the double disk furrow opener, l=3 mm.
Further, the number m=5 of the flexible micropins 3 arranged on the single ellipsoidal curved convex hull 2, the shape of the flexible micropins 3 is a long cylinder, the top end of the long cylinder is a hemisphere, the diameter D2 of the long cylinder is the same as the diameter D3 of the hemisphere at the top end of the long cylinder, the length S=3mm of the flexible micropins 3, and D2=0.3H.
Further, an included angle a=6° between a connecting line of the central point of the single-column ellipsoidal curved convex hull 2 on the disc 1 projected onto the disc 1 and a connecting line of the central point of the ellipsoidal curved convex hull 2 of the adjacent column projected onto the disc 1 is set at a distance b=0.8n.
Further, the flexible micropunctures 3 are made of polyvinyl chloride PVC or polyethylene PE.
Example 4: as shown in fig. 1-6, a coupling bionic double-disc furrow opener suitable for clay soil is provided, an ellipsoidal curved convex hull 2 arranged along the circumference of a disc is arranged on the outer surfaces of two discs 1 of the double-disc furrow opener, a flexible micro-thorn 3 is arranged on one side of the ellipsoidal curved convex hull 2 close to the center of the disc 1, the ellipsoidal curved convex hull 2 and the flexible micro-thorn 3 are connected into a whole to form a micro-thorn convex hull coupling bionic surface structure 4, and the structure is uniformly distributed on the working surface of the disc 1 along the circumference radial direction and is uniformly arranged in multiple layers.
Further, the cutting edge of the disc 1 is provided with bionic saw teethThe geometric means 5, the profile curve of which is: y=nx 2 Wherein, the value range of n is 0.4, and the value range of x is-18 mm (namely, the endpoint value in the range can be any value in the endpoint range).
Further, the thickness l=6mm of the single disc 1 in the double-disc furrow opener; wherein, the distance P=20mm from the ellipsoidal curved convex hull 2 distributed on the outermost layer of the disc 1 to the outer edge of the cutting edge of the disc 1.
Further, the ellipsoidal curved convex hull 2 is an ellipsoid with a bionic structure, and the equation is as follows:
wherein: the value range of the parameter a is 8-20 (i.e. the range can take the endpoint value, any value in the endpoint range), the value range of the parameter b is 5-15 (i.e. the range can take the endpoint value, any value in the endpoint range), and the value range of the parameter c is 1.5-4.5 (i.e. the range can take the endpoint value, any value in the endpoint range).
Further, the spherical crown height h=0.7l of the ellipsoidal curved convex hull 2; the length m=5l of the ellipsoidal curved convex hull 2; the width n=2l of the ellipsoidal curved convex hull 2; where L is the thickness of the individual disks 1 in the double disk furrow opener, l=6 mm.
Further, the number m=10 of the flexible micropins 3 arranged on the single ellipsoidal curved convex hull 2, the shape of the flexible micropins 3 is a long cylinder, the top end of the long cylinder is a hemisphere, the diameter D2 of the long cylinder is the same as the diameter D3 of the hemisphere at the top end of the long cylinder, the length S=10mm of the flexible micropins 3, and D2=0.4H.
Further, an included angle a=10° between a connecting line of the central point of the single-column ellipsoidal curved convex hull 2 on the disc 1 projected onto the disc 1 and a connecting line of the central point of the ellipsoidal curved convex hull 2 of the adjacent column projected onto the disc 1 is set at a spacing of b=1n.
The flexible micropuncture 3 is made of polyvinyl chloride PVC or polyethylene PE.
Example 5: as shown in fig. 1-6, a coupling bionic double-disc furrow opener suitable for clay soil is provided, an ellipsoidal curved convex hull 2 arranged along the circumference of a disc is arranged on the outer surfaces of two discs 1 of the double-disc furrow opener, a flexible micro-thorn 3 is arranged on one side of the ellipsoidal curved convex hull 2 close to the center of the disc 1, the ellipsoidal curved convex hull 2 and the flexible micro-thorn 3 are connected into a whole to form a micro-thorn convex hull coupling bionic surface structure 4, and the structure is uniformly distributed on the working surface of the disc 1 along the circumference radial direction and is uniformly arranged in multiple layers.
Further, the cutting edge of the disc 1 is provided with a bionic sawtooth geometry mechanism 5, and the contour curve is as follows: y=nx 2 Wherein, the value range of n is 0.5, and the value range of x is-18 mm (namely, the endpoint value in the range can be any value in the endpoint range).
Further, the thickness l=8mm of the single disc 1 in the double-disc furrow opener; wherein, the distance P=25mm from the ellipsoidal curved convex hull 2 distributed on the outermost layer of the disc 1 to the outer edge of the cutting edge of the disc 1.
Further, the ellipsoidal curved convex hull 2 is an ellipsoid with a bionic structure, and the equation is as follows:
wherein: the value range of the parameter a is 8-20 (i.e. the range can take the endpoint value, any value in the endpoint range), the value range of the parameter b is 5-15 (i.e. the range can take the endpoint value, any value in the endpoint range), and the value range of the parameter c is 1.5-4.5 (i.e. the range can take the endpoint value, any value in the endpoint range).
Further, the spherical crown height h=0.8l of the ellipsoidal curved convex hull 2; the length m=6l of the ellipsoidal curved convex hull 2; the width n=3l of the ellipsoidal curved convex hull 2; where L is the thickness of the individual disks 1 in the double disk furrow opener, l=8mm.
Further, the number m=15 of the flexible micropins 3 arranged on the single ellipsoidal curved convex hull 2, the shape of the flexible micropins 3 is a long cylinder, the top end of the long cylinder is a hemisphere, the diameter D2 of the long cylinder is the same as the diameter D3 of the hemisphere at the top end of the long cylinder, the length S=12mm of the flexible micropins 3 is d2=0.6H.
Further, an included angle a=12° between a connecting line of the central point of the single-column ellipsoidal curved convex hull 2 on the disc 1 projected onto the disc 1 and a connecting line of the central point of the ellipsoidal curved convex hull 2 on the adjacent column projected onto the disc 1 is set at a spacing of b=2.4n.
The flexible micropuncture 3 is made of polyvinyl chloride PVC or polyethylene PE.
The specific embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (1)
1. The utility model provides a coupling bionical double round disc furrow opener suitable for gluey heavy soil which characterized in that: an ellipsoidal curved surface convex hull (2) which is arranged along the circumference of the disc is arranged on the outer surfaces of two discs (1) of the double-disc furrow opener, a flexible micro-thorn (3) is arranged on one side, close to the center of the disc (1), of the ellipsoidal curved surface convex hull (2), the ellipsoidal curved surface convex hull (2) and the flexible micro-thorn (3) are connected into a whole, so that a micro-thorn convex hull coupling bionic surface structure (4) is formed, and the structure is uniformly distributed on the working surface of the disc (1) along the circumference radial direction and is uniformly arranged in multiple layers;
the cutting edge of the disc (1) is provided with a bionic sawtooth geometric mechanism (5), and the contour curve of the bionic sawtooth geometric mechanism is as follows:whereinnThe range of the value is 0.12 to 0.5,xthe range of the value is-18 mm;
the thickness L=3-8 mm of a single disc (1) in the double-disc furrow opener; wherein, the distance P=5-25 mm from the ellipsoidal curved convex hull (2) distributed on the outermost layer of the disc (1) to the outer edge of the cutting edge of the disc (1);
the ellipsoidal curved surface convex hull (2) is an ellipsoid with a bionic structure, and the equation is as follows:；
wherein: the value range of the parameter a is 8-20, the value range of the parameter b is 5-15, and the value range of the parameter c is 1.5-4.5;
the spherical crown height H=0. L-0.8L of the ellipsoidal curved convex hull (2); the length M= L to 6L of the ellipsoidal curved convex hull (2); the width N=1.5L-3L of the ellipsoidal curved convex hull (2); wherein L is the thickness of a single disc (1) in the double-disc furrow opener, and L=3-8 mm;
the number m=5-15 of flexible micropins (3) arranged on the single ellipsoidal curved convex hull (2), the shape of the flexible micropins (3) is a long cylinder, the top end of the long cylinder is a hemispherical body, the diameter D2 of the long cylinder is the same as the diameter D3 of the hemispherical body at the top end of the long cylinder, the length S=3-12 mm of the flexible micropins (3), and D2=0.3H-0.6H;
the included angle A between the connecting line of the central point of the single-row ellipsoidal curved convex hull (2) on the disc (1) projected onto the disc (1) and the connecting line of the central point of the ellipsoidal curved convex hull (2) of the adjacent row projected onto the disc (1) is 6-12 degrees, and the interval of each layer is B=0.8N-2.4N;
the flexible micropuncture (3) is made of polyvinyl chloride (PVC) or Polyethylene (PE).
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