CN102265727B - Exponential function curve type biomimetic resistance-reducing sub-soiling shovel handle - Google Patents
Exponential function curve type biomimetic resistance-reducing sub-soiling shovel handle Download PDFInfo
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Abstract
The invention relates to a sub-soiling shovel, i.e. a typical soil working part of agricultural machinery, in particular to an exponential function curve type biomimetic resistance-reducing sub-soiling shovel handle with a biomimetic structure, aiming at solving the technical problems of excessive working resistance of the traditional sub-soiling shovel. The sub-soiling shovel handle is based on outlines of the upper surfaces of claw toes of a mus musculus and in the shape of an exponential function curve mode. The technical scheme of the invention is that the front-surface cutting edge of the biomimetic resistance-reducing sub-soiling shovel handle, which cuts soil, is in the shape of a longitudinal outline (in the exponential function curve mode) of the upper surface of a middle toe of a front claw of the mus musculus; and an exponential function equation is as follows: y=-66.61e<0.0117x> +17.78e<-0.1835x>, wherein x is more than or equal to -2 and less than and equal to 40, and x is more than or equal to -0.04 and less than and equal to 0.8 mm in terms of mm. A wedge angle alpha of the biomimetic resistance-reducing sub-soiling shovel is more than or equal to 15 degrees and less than or equal to 25 degrees. According to the biomimetic resistance-reducing sub-soiling shovel handle with exponential function characteristics, the working resistance of the sub-soiling shovel can be reduced by 15 percent.
Description
Technical field:
The present invention relates to a kind of bionic, drag-reducing deep soil loosing shovel, particularly relate to a kind of exponential function type bionic, drag-reducing deep soil loosing shovel handle with drag reduction effect.
Background technology:
At present, along with modernized agrotechnique to development energy-saving and cost-reducing, sustainable, the environmental protection direction, the operation quality of agricultural tillage machinery is particularly had higher requirement to various typical soil-engaging components also in continuous raising with requiring.Deep soil loosing shovel is typical agricultural machinery soil cultivation parts, and traditional deep soil loosing shovel working resistance excessive be the problem that people pay close attention to for a long time always.The working resistance of deep soil loosing shovel mainly comes from two aspects: the one, and the frictional resistance between deep soil loosing shovel and the soil; Another is the shearing resistance of deep soil loosing shovel to soil.In the course of work of deep soil loosing shovel, the spade front surface is cut native cutting edge failure by shear soil.Above-mentioned these two resistances all have effect on the spade surface.The spade front surface is cut native cutting edge resistance in the course of the work except relevant with the attribute of soil itself, and is also closely related with the spatial form of cutting edge self.
Discover why the fore paw toe of home mouse (mus musculus) has stronger shoveling ability, direct relation is arranged with the shape of its fore paw toe.Home mouse (mus musculus) fore paw toe discovered that its upper surface outline line longitudinally has the characteristic near the exponential function curve.This architectural feature makes the resistance of this soil burrowing animal in it digs a hole the shoveling process reduce greatly.Therefore, the upper surface outline line of this similar exponential function curve form is applied to can reduce deep soil loosing shovel resistance in the course of the work significantly among the Bionic Design of deep soil loosing shovel handle structure.
Summary of the invention:
Deep soil loosing shovel handle working resistance comes from the native cutting edge of cutting of its front surface to the shearing resistance of soil and the frictional resistance of soil and spade.It is high that the object of the invention just is to solve existing deep soil loosing shovel working resistance, and the big and little technical problem of the dark loose degree of depth that can reach of energy consumption proposes a kind of bionical deep soil loosing shovel spade of exponential function type with anti-drag function.
Above-mentioned purpose of the present invention realizes that through following technical scheme accompanying drawings is following:
Exponential function shaped form bionic, drag-reducing deep soil loosing shovel handle; Construction section H3 three parts that fastening part H1, the bending that is fastenedly connected by frame cut soil section H2 and the deep soil loosing shovel sword is installed are formed; It is that the front surface of spade is cut native cutting edge that curve A among the soil section H2 is cut in described bending, and its effect is to bear soil to turn up soil broken; Curve B, the curved surface that A constituted play follow-up auxiliary hack effect; The curve C section is in order to match with two sections curve A, B, has considered that simultaneously whole bending cuts the manufacturability of soil section; Three sections curve A, B, C all adopt the biomimetic features of exponential function curvilinear characteristic, and used curvilinear equation is: y=-66.61e
0.0117x+ 17.78e
-0.1835x,-2≤x≤40, if calculate with mm, then the span of x is :-0.04≤x≤0.8mm, the x axle unit of fitting function image is 1/50mm, the wedging angle is the bury direction and the horizontal angle of deep soil loosing shovel sword, its span: 15 °≤α≤25 °.
Technique effect of the present invention:
The exponential function shaped form of exponential function type bionic, drag-reducing deep soil loosing shovel handle is cut native cutting edge; In the deep soil loosing shovel course of work, changed cubic metre of earth formula of cutting of traditional circular arc cutting edge, the change of this mode make the shearing resistance cut native cutting edge cutting soil and and soil between frictional resistance reduce.Can reduce the work energy consumption of deep soil loosing shovel so effectively, increase work efficiency.
The bionic, drag-reducing structural design of exponential function type bionic, drag-reducing deep soil loosing shovel handle can make the working resistance of deep soil loosing shovel reduce 15%.
Description of drawings:
Fig. 1 exponential function type bionic, drag-reducing deep soil loosing shovel handle sketch map.
The fore paw middle toe upper surface of Fig. 2 home mouse (mus musculus) is contour curve longitudinally.
Embodiment:
Engage said embodiment shown in the accompanying drawing below and further specify particular content of the present invention and embodiment thereof.
Exponential function type bionic, drag-reducing deep soil loosing shovel handle involved in the present invention mainly cuts soil section H2 (Tu Fa is carried out failure by shear and aid in later hack) by fastening part H1 section (being fastenedly connected with frame), bending and edge of shovel construction section H3 (the deep soil loosing shovel sword is installed) three parts are formed.According to general deep soil loosing shovel handle designing requirement; H1+H2+H3=600mm is (according to the dark loose requirement of reality; This value can suitably increase), wherein the H2+H3 segment length is 362mm, then the length of H1 section is for being 238mm; Width W is 60mm (according to the JB/T9788-1999 standard), and thickness T is 25mm (according to the JB/T9788-1999 standard).The H3 section is for installing the construction section of deep soil loosing shovel sword.This section size should specifically be confirmed according to the form (double airfoil type, arrow type and cutter type) of the JB/T9788-1999 standard and the edge of shovel.Described bending is cut the soil section and is the biomimetic features that adopts the exponential function curvilinear characteristic, comprises three sections curve A, B, C.The middle toe upper surface of the fore paw contour curve longitudinally that curved section is taken from home mouse shown in Figure 2 (mus musculus) (utilizes Olympus XZX12 type stereomicroscope to obtain image; And utilize OLPCIA P3 image analysis software to obtain, obtain its exponential function form through Fitting Analysis).
The design considerations that the curved section (the mining process of home mouse, bearing the main native function of cutting) that begins from tip portion of toe is cut the soil structure curved section as exponential function type bionic, drag-reducing deep soil loosing shovel handle; Promptly in Fig. 2, get :-2≤x≤40; Optimum valuing range is :-2≤x≤25; The span of x is if calculate then with mm :-0.04≤x≤0.8mm, optimum valuing range is :-0.04≤x≤0.5mm (the x axle unit of fitting function image is 1/50mm).Fully take into account the actual design parameter of spade, the exponential function type bionic, drag-reducing deep soil loosing shovel handle bending after optimizing is cut the size of soil section and is consulted A section curve shown in Figure 1.Spade partial L/D span: 0.8≤L/D≤0.9, L is the deep soil loosing shovel active length of burying, D is the dark loose degree of depth.The size of L and D can be respectively 305mm and 362mm (according to the dark loose degree of depth requirement of reality, these two parameters can be extended to 915mm and 1086mm respectively), L/D=305mm/362mm=0.84; According to early stage to the result of study of home mouse (musmusculus) pawl toe, and combine the general scope of design at deep soil loosing shovel wedging angle: 15 °≤α≤25 °, add wedging angle α=24 ° most; Curved section A, B, C all take from same exponential function curve shown in Figure 2, and wherein curve A is the native cutting edge of cutting of spade.The size of other structure of spade is confirmed on the basis of the JB/T9788-1999 standard that combines practical design requirement and State Administration of Machinery Industry's issue, is consulted shown in Figure 1.
Claims (3)
1 exponential curve bionic drag reduction subsoiling shanks, from the rack fastening fastening portion H1, H2 and curved sections setsudo subsoiling blade shovel mounted installation segment H3 three parts, wherein the setsudo said curved sections of the curve A of H2 shovel blade front surface of the soil cut, its role is assumed crushed soil mattress; curve B, A follow-posed surfaces play the role of a secondary pulverizer; curve C of to the two curves A, B match, while meeting the bending strength of the process of cutting sections of the soil; three sections of curves A, B, C are the exponential function curve bionic structure characteristics, the use of the curve equation: y = -66.61e
0.0117x +17.78 e
-0.1835x , -2 ≤ x ≤ 40, calculated terms of mm, then x ranges: -0.04 ≤ x ≤ 0.8mm, fitting function image x-axis in units of 1/50mm, wedged into the corner of the shovel blade buried deep loosening direction and horizontal angle α, which ranges: 15 ° ≤ α ≤ 25 °.
2. exponential function shaped form bionic, drag-reducing deep soil loosing shovel handle according to claim 1 is characterized in that, described spade partial L/D span: 0.8≤L/D≤0.9, and L is the deep soil loosing shovel active length of burying, D is the dark loose degree of depth.
3 according to claim 1 or 2, wherein the exponential function curve bionic drag-reducing deep shovel handle, characterized in that said wedged into the angle α = 24 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110105515 CN102265727B (en) | 2011-04-27 | 2011-04-27 | Exponential function curve type biomimetic resistance-reducing sub-soiling shovel handle |
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| CN 201110105515 CN102265727B (en) | 2011-04-27 | 2011-04-27 | Exponential function curve type biomimetic resistance-reducing sub-soiling shovel handle |
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| CN102265727B true CN102265727B (en) | 2012-12-26 |
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| CN102487611A (en) * | 2011-12-16 | 2012-06-13 | 吉林大学 | Combined anti-drag subsoiling shovel |
| CN103212727B (en) * | 2013-05-10 | 2015-01-07 | 吉林大学 | Integral bionic external turning tool |
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| CN103797906B (en) * | 2013-12-24 | 2015-09-30 | 西北农林科技大学 | Based on the bionic, drag-reducing subsoiling spade of power function curve |
| CN104541606B (en) * | 2014-12-30 | 2016-08-31 | 西安亚澳农机股份有限公司 | Efficiently save the subsoiling plow that merit tractive resistance is little |
| CN105359641B (en) * | 2015-10-24 | 2018-01-30 | 吉林大学 | A kind of bionical shovel head |
| CN105874902B (en) * | 2016-05-05 | 2018-01-09 | 吉林大学 | A kind of deep soil loosing shovel based on dynamic bionic principle |
| CN106233833A (en) * | 2016-07-13 | 2016-12-21 | 吉林建筑大学 | A kind of imitative Lumbricus ripple lubrication body surface anti-drag subsoiling shovel |
| CN106489410B (en) * | 2016-12-26 | 2022-12-23 | 吉林大学 | Bionic viscosity-reducing resistance-reducing digging shovel of potato harvester suitable for heavy loam |
| CN106993424A (en) * | 2017-05-10 | 2017-08-01 | 西华大学 | The bionical excavation shovel piece of potato class based on quadratic polynomial and logarithmic function |
| CN107996037A (en) * | 2018-01-18 | 2018-05-08 | 吉林大学 | A kind of bionical deep soil loosing shovel of the low soil disturbance of drag reduction |
| CN108391473A (en) * | 2018-02-13 | 2018-08-14 | 河南科技大学 | A kind of spade cutting edge member line is the subsoiling spade of bionical curve |
| CN109874416B (en) * | 2019-04-28 | 2021-08-10 | 吉林大学 | Bamboo rat and ant lion coupling bionic resistance-reducing subsoiling shovel |
| CN110073737B (en) * | 2019-06-04 | 2023-11-17 | 吉林大学 | Bionic subsoiler with drag reduction bionic surface |
| CN111386758A (en) * | 2020-03-31 | 2020-07-10 | 吉林大学 | Bionic drag reduction subsoiler with low soil disturbance |
| CN115250650B (en) * | 2022-09-05 | 2024-03-22 | 吉林大学 | Double-wing deep scarification mechanism capable of simulating rigid-flexible coupling self-excited vibration |
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| CN201450743U (en) * | 2009-04-22 | 2010-05-12 | 吉林大学 | Bionic subsoiling variable fertilizer applicator |
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| CN2057053U (en) * | 1989-10-13 | 1990-05-16 | 中国农业机械化科学研究院 | Deep-loosening combined tillage machine |
| DE4025016A1 (en) * | 1990-08-07 | 1992-02-13 | Ayala D Florencio Echezarreta | Soil deep ploughing implement - loosens soil without inverting it, using share and skimmer |
| CN201450743U (en) * | 2009-04-22 | 2010-05-12 | 吉林大学 | Bionic subsoiling variable fertilizer applicator |
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