CN104938066A - Concave stubble shifting mechanism with bionic claw structures - Google Patents

Abstract

The invention discloses a concave stubble shifting mechanism with bionic claw structures. The concave stubble shifting mechanism is characterized in that 8-16 finger-shaped wheel teeth of each stubble shifting wheel of the concave stubble shifting mechanism are uniformly distributed on a spherical cap surface along wheel tooth roots, a concave disc is positioned on the spherical cap surface, and curves at the edges of the inner and outer sides of the finger-shaped wheel teeth are designed to simulate movement tracks of claws of moles which are soil animals. The pair of stubble shifting wheels with the bionic claw structures are connected with each other by a mechanism connecting frame, so that the concave stubble shifting mechanism can be mounted to form a 'herringbone', the stubble cleaning ability of a seeding machine can be greatly improved, and the shortcoming of stubble cleaning residues due to gaps reserved in the middles of the traditional stubble cleaning and grass cleaning mechanisms can be overcome. The concave stubble shifting mechanism has the advantages that the concave stubble shifting mechanism is high in stubble cleaning ability, power can be saved, and the operation cost can be reduced.

Description

A kind of concave surface Bo Cha mechanism with bionical claw structure

Technical field

The present invention relates to the ridge cleaning parts on agricultural tillage machinery, particularly relate to a kind of concave surface Bo Cha mechanism with bionical claw structure.

Background technology

Under conservation tillage pattern, earth's surface remains a large amount of stalk, stubble, has a strong impact on seeding quality.Therefore, before sowing and ditching operation, need effective cleaning kind of a bed to remain covering, reduce facility operation and block up, improve seeding machinary percent of pass and operation quality.

Patent of invention (the clear stubble of a kind of profiling claw type floating, careless mechanism CN 101336575) discloses a kind of no-tillage seeding machine Qing Chacao mechanism, reaches the object of cleaning kind of bed weeds and stubble.But this mechanism's grass pulling wheel is arrangement in " eight " font, and two-wheeled is separated from one another at the following gear teeth of meshing point, there is cleaning blind area, part stalk still can cover kind of a bed, affects seeding quality; Grass pulling wheel is planar structure, and during operation, to the effect of stalk mainly based on thruster, without turning over throwing effect, cleaning ability has some limitations.

By analyzing and simulating geometry and the kinematics character of typical soil animal, pawl toe-soil inter_curve can be optimized to reduce the operation consumption of soil-engaging component.As: a kind of cultivation rotation working part (200910066892.4) with bionic geometric structure, is imitated the geometry of mole pawl toe, can reduce energy ezpenditure during farming operation by the finger-type gear teeth.

Summary of the invention

The object of the present invention is to provide a kind of concave surface Bo Cha mechanism with bionical claw structure, group stubble wheel a pair with bionical claw structure is staggered installation of in " people " font by Bo Cha mechanism link, eliminates traditional cleaning-stubble machine structure and dials the drawback that stubble blind area is dialled in stubble wheel " eight " font installation existence; Dialling stubble wheel tire is evenly distributed on concave surface, has throwing turn over effect to stalk and stubble, and de-stubble, soil and clear stubble effect are even more ideal; Tire profile imitates the movement locus of mole pawl toe, also can clear up in time, enhance transaction capabilities on stalk, earth's surface that crop residue cover amount is larger, improves facility and passes through performance on no-tillage with stubble retention earth's surface.

Comprehensive mechanical optimal design of the present invention and the bionical advantage of engineering, imitate the movement locus of soil animal mole pawl toe, design a kind of wheel claw concave surface with bionic movement structure and dial stubble wheel, its group of stubble tire is distributed in space concave disk outer rim, tire profile imitates the movement locus of mole pawl toe, to the increased surface covering such as stalk, stubble, not only there is thruster effect, but also there is throwing turn over effect.When soil moisture content is larger, plane is dialled stubble wheel and is easily adhered to soil and stubble; It is close with disc operation principle that stubble wheel dialled by concave disk, stubble and a small amount of soil can rise, overturn, fall along dialling stubble wheel concave surface, stubble is thrown to kind of bed both sides, when crop residue cover is more serious, clear stubble, de-stubble, de-native effect are even more ideal, and solving existing plane Bo Cha mechanism is only that simple squeezing pushes away stalk, plants bed and clear up halfway problem.

As shown in Figures 1 to 4, the present invention has first group of stubble wheel 1 and second group of stubble wheel 15, it is identical that second group of stubble wheel 15 and first group of stubble take turns 1 structure, the rotation direction of the finger-type gear teeth 2 is different, first group of stubble wheel 1 is made up of mounting plane 8 and concave disk (working curved surface) 14 two parts, zone line is mounting plane 8, the diameter D of mounting plane 8 ₁; Concave disk 14 is a spherical crown curved surface part, and concave disk radius of curvature R scope is 300-340mm, and concave disk end view drift angle is θ, and wherein θ is 60 °, and the thickness of concave disk 14 is 3-9mm; The finger-type gear teeth 2 are evenly distributed on the spherical crown curved surface of concave disk place along gear teeth root circle 3, the quantity of the finger-type gear teeth 28 ~ 16, outside the finger-type gear teeth, flank profil BC curve 4 and inner side flank profil ED curve 5 are that the Its Track Design imitating soil animal mole pawl toe forms.Flank profil BC sweep R outside the finger-type gear teeth ₂be less than flank profil ED sweep R inside the finger-type gear teeth ₁;

Outside the finger-type gear teeth, AB straight line 7 and radial radioactive ray angle β are 15 °, the tip diameter span 280mm≤D of first group of stubble wheel 1 ₂≤ 350mm, the mounting plane 8 diameter value 90mm≤D of the concave disk 14 of first group of stubble wheel 1 ₁≤ 100mm.

On concave disk 14, inside the finger-type gear teeth, flank profil ED curve 5 meets following equation:

$R_1=\sqrt{{(x+\frac{13.5}{k})}^2+{(y-\frac{330}{k})}^2}+b_1$

${\left(\frac{x}{R}\right)}^2+{\left(\frac{y}{R}\right)}^2+{\left(\frac{z}{R}\right)}^2=1$

In formula: x, y, z is the rectangular coordinate system in space axle set up, b ₁for floating parameter, k is conversion coefficient, wherein :-75mm≤x≤D ₂/ 2,115mm≤y≤D ₂/ 2,300mm≤R≤340mm, 60mm≤R ₁≤ 80mm ,-10mm≤b ₁≤ 10mm, k=3 ~ 3.2;

On concave disk 14, outside the finger-type gear teeth, flank profil BC curve 4 meets following equation:

$R_2=\sqrt{{\left(x+\frac{40.5}{k}\right)}^2+{\left(y-\frac{363}{k}\right)}^2}+b_2$

${\left(\frac{x}{R}\right)}^2+{\left(\frac{y}{R}\right)}^2+{\left(\frac{z}{R}\right)}^2=1$

In formula: x, y, z is the rectangular coordinate system in space axle set up, b ₂for floating parameter, k is conversion coefficient, wherein :-75mm≤x≤D ₂/ 2,115mm≤y≤D ₂/ 2,300mm≤R≤340mm, 60mm≤R ₂≤ 80mm ,-10mm≤b ₂≤ 10mm, k=3 ~ 3.2;

R---concave disk radius of curvature

D ₂---dial stubble wheel tip diameter

R---finger-type gear teeth root radius

R ₁---flank profil ED sweep inside the finger-type gear teeth

R ₂---flank profil BC sweep outside the finger-type gear teeth.

First group of stubble wheel 1 and second group of stubble wheel 15 are crisscross arranged in " people " font and are fixed on mechanism's link 12 two ends by hanger 13, overlapping region is there is in a forward direction in first group of stubble wheel 1 and second group of stubble wheel 15 between operation area, overlapping region width is d, and wherein d is 20mm ~ 100mm; First group of stubble wheel 1 and the second group of stubble are taken turns 15 mounting planes and are projected on the ground and be α with direction of advance angle, and α is 20 ° ~ 50 °.

The course of work of the present invention and beneficial effect:

During the operation of Bo Cha mechanism, dial link thrust and soil, increased surface covering effect counter-force that stubble wheel is subject to mechanism, two kinds of force directions are contrary, and application point on group center of stubble wheel and outer rim, forms couple respectively, dial the rolling of stubble wheel and advance.The concave surface characteristic dialling stubble wheel makes to dial stubble wheel when moisture content is larger during operation, sticks to soil on concave disk and stubble and is more easily turned over and be buckled in ground, de-stubble soil effect comparatively plane to dial stubble wheel better; Stubble is thrown to kind of bed both sides along concave surface rising certain altitude, clear stubble better effects if, reduces the generation of clogging; Two to dial stubbles wheel staggered in " people " font, and operating area partly overlaps, and overlapping region secondary is cleared up, and arrange dial compared with stubble take turns with " eight " font, clear stubble effect more thoroughly, raising operation quality.

Accompanying drawing explanation

Fig. 1 is embodiments of the invention one front views.

Fig. 2 is embodiments of the invention two front views.

Fig. 3 is vertical view of the present invention.

Fig. 4 is of the present invention group of stubble wheel end view.

Fig. 5 is of the present invention group of stubble wheel installation site distribution vertical view.

Fig. 6 is of the present invention group of stubble wheel " people " font setting angle schematic diagram.

Fig. 7 is of the present invention group of stubble wheel integral installation figure.

In figure: 1-the first group of stubble wheel; 2-finger-type gear teeth; 3-gear teeth root circle; Flank profil BC curve outside 4-finger-type gear teeth; Flank profil ED curve inside 5-finger-type gear teeth; 6-tooth root EF curve; Straight line AB outside 7-finger-type gear teeth; 8-mounting plane; R-concave disk radius of curvature; θ-concave disk end view drift angle; 11-concave disk outside circle; 12-mechanism link; 13-hanger; 14-concave disk; 15-the second group of stubble wheel.

Embodiment

As shown in Figures 1 to 7, the present invention has first group of stubble wheel 1 and second group of stubble wheel, 15, second group of stubble wheel 15 and first group of stubble, and to take turns 1 structure identical, and the rotation direction of the finger-type gear teeth 2 is different; 12 finger-type gear teeth 2 of first group of stubble wheel 1 are evenly distributed on the spherical crown curved surface of concave disk 14 place along gear teeth root circle 3, and the interior outer ledge curve of the finger-type gear teeth 2 is the Its Track Design imitating soil animal mole pawl toe and forms.

Flank profil BC sweep R outside the finger-type gear teeth ₂be less than flank profil ED sweep R inside the finger-type gear teeth ₁;

Outside the finger-type gear teeth, AB straight line 7 and radial radioactive ray angle β are 15 °, the tip diameter span 280mm≤D of first group of stubble wheel 1 ₂≤ 350mm.

Concave disk equation radius of curvature meets following equation:

${\left(\frac{x}{R}\right)}^2+{\left(\frac{y}{R}\right)}^2+{\left(\frac{z}{R}\right)}^2=1$

In formula: 300mm≤R≤340mm, concave disk end view drift angle is θ, wherein θ=60 °, and the thickness of concave disk is 3-9mm.

On concave disk, inside the finger-type gear teeth, flank profil ED curve 5 track meets following equation:

$R_1=\sqrt{{(x+\frac{13.5}{k})}^2+{(y-\frac{330}{k})}^2}+b_1$

${\left(\frac{x}{R}\right)}^2+{\left(\frac{y}{R}\right)}^2+{\left(\frac{z}{R}\right)}^2=1$

In formula: x, y, z is the rectangular coordinate system in space axle set up, b ₁for floating parameter, k is conversion coefficient, wherein :-75mm≤x≤D ₂/ 2,115mm≤y≤D ₂/ 2,300mm≤R≤340mm, 60mm≤R ₁≤ 80mm ,-10mm≤b ₁≤ 10mm, k=3 ~ 3.2;

On concave disk, outside the finger-type gear teeth, flank profil BC curve 4 track meets following equation:

$R_2=\sqrt{{(x+\frac{40.5}{k})}^2+{(y-\frac{363}{k})}^2}+b_2$

${\left(\frac{x}{R}\right)}^2+{\left(\frac{y}{R}\right)}^2+{\left(\frac{z}{R}\right)}^2=1$

In formula: x, y, z is the rectangular coordinate system in space axle set up, b ₂for floating parameter, k is conversion coefficient, wherein :-75mm≤x≤D ₂/ 2,115mm≤y≤D ₂/ 2,300mm≤R≤340mm, 60mm≤R ₂≤ 80mm ,-10mm≤b ₂≤ 10mm, k=3 ~ 3.2;

R---concave disk radius of curvature

D ₂---dial stubble wheel two-dimension projection tip diameter

R---finger-type gear teeth root radius

R ₁---flank profil ED sweep inside the finger-type gear teeth

R ₂---flank profil BC sweep outside the finger-type gear teeth

Concave disk 14 is formed by iron casting, and the finger-type gear teeth 2 are evenly distributed on concave disk 14 along concave disk root circle 3, and with concave disk 14 at same concave surface and radius of curvature is identical, concave disk radius of curvature R gets 300-340mm, and thickness gets 3-9mm.

As shown in Fig. 5, Fig. 6 and Fig. 7, it is that " people " font is fixed on hanger 13 two ends that first group of stubble wheel 1 is connected by mechanism's link 12 with second group of stubble wheel 15, staggered in facility direction of advance, the front end of first group of stubble wheel 1 and second group of stubble wheel 15 is restrained but does not interfere.The outer counter of first group of stubble wheel 1 and second group of stubble wheel 15 is in the upright projection on ground, and tangent line and unit direction of advance all angled α, the α of the respective center of first group of stubble wheel 1 and second group of stubble wheel 15 are 20 ° ~ 50 °.The excircle dimension D of first group of stubble wheel 1 and second group of stubble wheel 15 ₂for 285mm.

First group of stubble wheel 1 becomes " people " font staggered with second group of stubble wheel 15 in the upright projection on ground, and both operating areas in facility direction of advance partly overlap, and overlapping region width is d, and wherein d is 20mm-100mm.

Embodiment one:

As shown in Figure 1 and Figure 4, concave disk radius of curvature 9 value R=330mm (scope of design is 300-340mm), concave disk end view vertex angle theta value 60 °, concave disk outside circle 11 gets D ₂=300mm, tooth root EF curve 6 gets r=8mm.The excavation movement locus feature of the finger-type gear teeth 2 contour curve reference mole pawl toe of first group of stubble wheel 1.Coefficient k=3, inside the finger-type gear teeth, flank profil ED curve 5 profile equation meets simultaneously:

$62=\sqrt{{(x+4.5)}^2+{(y-110)}^2}$

${\left(\frac{x}{330}\right)}^2+{\left(\frac{y}{330}\right)}^2+{\left(\frac{z}{330}\right)}^2=1$

In formula: x, y, z is the rectangular coordinate system in space axle set up ,-75≤x≤0,75≤y≤150, in coordinate system, unit is mm, inside the finger-type gear teeth, flank profil ED curve 5 is for meeting one section of curve of above-mentioned equation, and the scope of x, y defines the scope of flank profil ED curve 5 inside the finger-type gear teeth.

Outside the finger-type gear teeth, flank profil BC curve 4 profile equation meets simultaneously:

$57=\sqrt{{(x-13.5)}^2+{(y-121)}^2},$

${\left(\frac{x}{330}\right)}^2+{\left(\frac{y}{330}\right)}^2+{\left(\frac{z}{330}\right)}^2=1$

In formula: x, y, z is the rectangular coordinate system in space axle set up ,-75≤x≤0,115≤y≤150, in coordinate system, unit is mm, outside the finger-type gear teeth, flank profil BC curve 4 is for meeting one section of curve of above-mentioned equation, and the scope of x, y defines the scope of flank profil BC curve 4 outside the finger-type gear teeth.

Embodiment two:

As shown in Figure 2 and Figure 4, concave disk radius of curvature 9, concave disk end view vertex angle theta, concave disk outside circle 11 and tooth root EF curve 6 size constancy, the finger-type gear teeth 2 profile that embodiment two and embodiment one take turns 1 unlike: the first group of stubble changes, tooth is long to be shortened, outside the finger-type gear teeth, flank profil BC curve 4 radius increases, and inside the finger-type gear teeth, flank profil ED curve 5 radius increases.Coefficient k=3.2, inside the finger-type gear teeth, flank profil ED curve 5 profile equation meets simultaneously:

$62=\sqrt{{(x+4.2)}^2+{(y-103)}^2}-5$

${\left(\frac{x}{330}\right)}^2+{\left(\frac{y}{330}\right)}^2+{\left(\frac{z}{330}\right)}^2=1$

In formula: x, y, z is the rectangular coordinate system in space axle set up ,-75≤x≤0,75≤y≤150, in coordinate system, unit is mm, inside the finger-type gear teeth, flank profil ED curve 5 is for meeting one section of curve of above-mentioned equation, and the scope of x, y defines the scope of flank profil ED curve 5 inside the finger-type gear teeth.

Outside the finger-type gear teeth, flank profil BC curve 4 profile equation meets simultaneously:

$57=\sqrt{{(x-12.66)}^2+{(y-113.44)}^2}-5$

${\left(\frac{x}{330}\right)}^2+{\left(\frac{y}{330}\right)}^2+{\left(\frac{z}{330}\right)}^2=1$

In formula: x, y, z is the rectangular coordinate system in space axle set up ,-75≤x≤150,115≤y≤150, in coordinate system, unit is mm, outside the finger-type gear teeth, flank profil BC curve 4 is for meeting one section of curve of above-mentioned equation, and the scope of x, y defines the scope of flank profil BC curve 4 outside the finger-type gear teeth.

Claims (3)

1. one kind has the concave surface Bo Cha mechanism of bionical claw structure, it is characterized in that: there is first group of stubble wheel (1) and second group of stubble wheel (15), it is identical that second group of stubble wheel (15) and first group of stubble take turns (1) structure, the rotation direction of the finger-type gear teeth (2) is different, first group of stubble wheel (1) includes mounting plane (8) and concave disk (14), zone line is the diameter D of mounting plane (8), mounting plane (8) ₁; Concave disk (14) is a spherical crown curved surface part, and concave disk radius of curvature R is 300-340mm, and concave disk end view drift angle is θ, and wherein θ is 60 °, and the thickness of concave disk (14) is 3-9mm; The finger-type gear teeth (2) are evenly distributed on the spherical crown curved surface of concave disk (14) place along gear teeth root circle (3), the quantity of the finger-type gear teeth (2) 8 ~ 16, flank profil BC sweep R outside the finger-type gear teeth ₂be less than flank profil ED sweep R inside the finger-type gear teeth ₁;

Outside the finger-type gear teeth, AB straight line (7) and radial radioactive ray angle β are 15 °, the tip diameter span 280mm≤D of first group of stubble wheel (1) ₂≤ 350mm, mounting plane (8) the diameter value 90mm≤D of the concave disk (14) of first group of stubble wheel (1) ₁≤ 100mm;

Inside the upper finger-type gear teeth of concave disk (14), flank profil ED curve (5) meets following equation:

In formula: x, y, z is the rectangular coordinate system in space axle set up, b ₁for floating parameter, k is conversion coefficient, wherein :-75mm≤x≤D ₂/ 2,115mm≤y≤D ₂/ 2,300mm≤R≤340mm, 60mm≤R ₁≤ 80mm ,-10mm≤b ₁≤ 10mm, k=3 ~ 3.2;

Outside the upper finger-type gear teeth of concave disk (14), flank profil BC curve (4) meets following equation:

In formula: x, y, z is the rectangular coordinate system in space axle set up, b ₂for floating parameter, k is conversion coefficient, wherein :-75mm≤x≤D ₂/ 2,115mm≤y≤D ₂/ 2,300mm≤R≤340mm, 60mm≤R ₂≤ 80mm ,-10mm≤b ₂≤ 10mm, k=3 ~ 3.2;

R---concave disk radius of curvature

D ₂---dial stubble wheel two-dimension projection tip diameter

R---finger-type gear teeth root radius

R ₁---flank profil ED sweep inside the finger-type gear teeth

R ₂---flank profil BC sweep outside the finger-type gear teeth.

2. a kind of concave surface Bo Cha mechanism with bionical claw structure according to claim 1, it is characterized in that: first group of described stubble wheel (1) and second group of stubble wheel (15) are crisscross arranged in " people " font and are fixed on mechanism's link (12) two ends by hanger (13), overlapping region is there is in a forward direction in first group of stubble wheel (1) and second group of stubble wheel (15) between operation area, overlapping region width is d, and wherein d is 20mm ~ 100mm; First group of stubble wheel (1) and the second group of stubble are taken turns (15) mounting plane and are projected on the ground and be α with direction of advance angle, and α is 20 ° ~ 50 °.

3. a kind of concave surface Bo Cha mechanism with bionical claw structure according to claim 1, is characterized in that: outside the described finger-type gear teeth, flank profil BC curve (4) and inner side flank profil ED curve (5) are that the Its Track Design imitating soil animal mole pawl toe forms.