CN104938066B - A kind of concave surface Bo Cha mechanism with bionical claw structure - Google Patents

Abstract

The invention discloses a kind of concave surface Bo Cha mechanism with bionical claw structure, 8～16 finger-type gear teeth of its group of stubble wheel are evenly distributed on the spherical crown surface of concave disk place along gear teeth tooth root, and the interior outer ledge curve of the finger-type gear teeth is the Its Track Design of imitation soil animal mole pawl toe and forms.The stubble wheel of dialling a pair with bionical claw structure makes this mechanism install in " people " font by mechanism's link connection, and the clear stubble ability of seeder can be made to increase substantially, and improves retention gap in the middle of the clear stubble of tradition, Qing Cao mechanism and causes clear stubble to have the drawback of residual.This mechanism clear stubble ability is good, saves power, reduces operating cost.

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 there is the recessed of bionical claw structure Mian Bocha mechanism.

Background technology

Under conservation tillage pattern, earth's surface residual a large amount of straws, stubble, have a strong impact on seeding quality.Therefore, in sowing Before ditching operation, it is desirable to have the cleaning kind bed of effect residual covering, reduce facility operation and block up, improve seeding machinary percent of pass and Operation quality.

Patent of invention (a kind of clear stubble of profiling claw type floating, grass mechanism CN 101336575) discloses a kind of no-tillage seeding machine Use Qing Chacao mechanism, reach cleaning kind bed weeds and the purpose of stubble.But this mechanism's grass pulling wheel is arranged in " eight " font, and two-wheeled exists The following gear teeth of meshing point are separated from one another, there is cleaning blind area, and part straw still can cover kind of a bed, affect seeding quality；Grass pulling wheel For planar structure, during operation, the effect to straw mainly pushes away based on side, and without turning over throwing effect, cleaning ability exists certain office Sex-limited.

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

Summary of the invention

It is an object of the invention to provide a kind of concave surface Bo Cha mechanism with bionical claw structure, there is for a pair bionical pawl The stubble wheel of dialling of formula structure is staggered installation of in " people " font by Bo Cha mechanism link, eliminates tradition cleaning-stubble machine structure and dials stubble wheel " eight " Font is installed and be there is the drawback dialling stubble blind area；Dial stubble wheel tire to be evenly distributed on concave surface, straw and stubble are had throwing and turns over work With, de-stubble, soil and clear stubble effect are even more ideal；Tire profile imitates the movement locus of mole pawl toe, in straw, crop residue cover amount Bigger earth's surface also can be cleared up in time, enhances transaction capabilities, improves facility and passes through performance on no-tillage with stubble retention earth's surface.

The advantage that comprehensive mechanical optimization design of the present invention is bionical with engineering, imitates the motion rail of soil animal mole pawl toe Mark, designs a kind of wheel claw concave surface with bionic movement structure and dials stubble wheel, and its group of stubble tire is distributed in outside the concave disk of space Edge, the movement locus of tire profile imitation mole pawl toe, the increased surface covering such as straw, stubble is not only had side and pushes away effect, and And also there is throwing turn over effect.In the case of soil moisture content is relatively big, plane is dialled stubble wheel and is easily adhered soil and stubble；Concave surface circle Stubble wheel dialled by dish and disc operation principle is close, and stubble and a small amount of soil can rise along dialling stubble wheel concave surface, overturn, fall, residual Stubble is thrown to kind of bed both sides, and at crop residue cover ratio in the case of more serious, clear stubble, de-stubble, de-soil effect are even more ideal, solve Existing plane Bo Cha mechanism is only that simple squeezing pushes away straw, the kind bed halfway problem of cleaning.

As shown in Figures 1 to 4, 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 Dialling stubble, to take turns 1 structure identical, and the rotation direction of the finger-type gear teeth 2 is different, and first group of stubble wheel 1 is by mounting plane 8 and concave disk (work song Face) 14 two parts compositions, zone line is mounting plane 8, the diameter D of mounting plane 8₁；Concave disk 14 is spherical crown curved surface one Part, concave disk radius of curvature R scope is 300-340mm, and the edge drift angle of concave disk is θ, and wherein θ is 60 °, concave surface circle The thickness of dish 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, finger-type The quantity 8 of the gear teeth 2～16, outside the finger-type gear teeth, flank profil BC curve 4 and inner side flank profil ED curve 5 are the fortune imitating mole pawl toe Dynamic Trajectory Design forms.Flank profil BC sweep R outside the finger-type gear teeth₂Less than flank profil ED sweep R inside the finger-type gear teeth₁；

Outside the finger-type gear teeth, AB straight line 7 is 15 ° with radially lonizing radiation angle β, the tip diameter value of first group of stubble wheel 1 Scope 280mm≤D₂≤ 350mm, the mounting plane 8 diameter value 90mm≤D of the concave disk 14 of first group of stubble wheel 1₁≤ 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, b₁For floating parameter, k is conversion coefficient, wherein :- 75mm≤x≤D₂/ 2,115mm≤y≤D₂/ 2,300mm≤R≤340mm, 60mm≤R₁≤ 80mm ,-10mm≤b₁≤ 10mm, k =3～3.2；

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

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

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

In formula: x, y, z is the rectangular coordinate system in space axle set up, b₂For floating parameter, k is conversion coefficient, wherein :- 75mm≤x≤D₂/ 2,115mm≤y≤D₂/ 2,300mm≤R≤340mm, 60mm≤R₂≤ 80mm ,-10mm≤b₂≤ 10mm, k =3～3.2；

R concave disk radius of curvature

D₂Dial stubble wheel tip diameter

R finger-type gear teeth root radius

R₁Flank profil ED sweep inside the finger-type gear teeth

R₂Flank profil BC sweep outside the finger-type gear teeth.

First group of stubble wheel 1 and the second group of stubble wheel 15 are crisscross arranged in " people " font and pass through hanger 13 and be fixed on mechanism and connect There is overlapping region, overlay region field width in frame 12 two ends, first group of stubble wheel 1 and second group of stubble wheel 15 operation interval in a forward direction Degree is d, and wherein d is 20mm～100mm；First group of stubble wheel 1 and second group of stubble are taken turns 15 mounting planes and are projected on the ground and advance It is 20 °～50 ° that angular separation is α, α.

The work process of the present invention and beneficial effect:

During the operation of Bo Cha mechanism, dial stubble wheel by the link thrust of mechanism and soil, increased surface covering effect counter-force, two Planting force direction contrary, application point on the center dialling stubble wheel and outer rim, forms couple respectively, and group stubble wheel rolls and advances.Dial The concave surface characteristic of stubble wheel makes to dial stubble wheel in the case of moisture content is relatively big during operation, sticks to the soil on concave disk and residual Stubble is easier to be turned over be buckled in ground, and de-stubble soil effect relatively plane dials stubble wheel more preferably；Stubble rises certain altitude along concave surface and is thrown to Planting bed both sides, clear stubble effect is more preferable, reduces the generation of clogging；Dial stubble for two and take turns staggered in " people " font, operation area Territory partly overlaps, and overlapping region secondary is cleared up, and compared with " eight " font arrangement group stubble wheel, clear stubble effect is more thorough, improves 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 be the present invention top view.

Fig. 4 is that the stubble of dialling of the present invention takes turns side view.

Fig. 5 is that the stubble wheel installation site of dialling of the present invention is distributed top view.

Fig. 6 is that the stubble of dialling of the present invention takes turns " people " font setting angle schematic diagram.

Fig. 7 is that the stubble of dialling of the present invention takes turns integral installation figure.

In figure: 1 first group of stubble wheel；The 2 finger-type gear teeth；3 gear teeth root circles；Outside the 4 finger-type gear teeth, flank profil BC is bent Line；Flank profil ED curve inside the 5 finger-type gear teeth；6 tooth root EF curves；Straight line AB outside the 7 finger-type gear teeth；8 mounting planes； R concave disk radius of curvature；θ concave disk side view drift angle；11 concave disk outside circles；12 mechanism's links； 13 hangers；14 concave disks；15 second groups of stubble wheels.

Detailed description of the invention

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 Dialling stubble, 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 along gear teeth root circle 3 Being evenly distributed on the spherical crown curved surface of concave disk 14 place, the interior outer ledge curve of the finger-type gear teeth 2 is imitation mole pawl toe Its Track Design form.

Flank profil BC sweep R outside the finger-type gear teeth₂Less than flank profil ED sweep R inside the finger-type gear teeth₁；

Outside the finger-type gear teeth, AB straight line 7 is 15 ° with radially lonizing radiation angle β, the tip diameter value of first group of stubble wheel 1 Scope 280mm≤D₂≤350mm。

Concave disk equation radius of curvature meets below 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 side view drift angle is θ, wherein θ=60 °, the thickness of concave disk For 3-9mm.

On concave disk, inside the finger-type gear teeth, flank profil ED curve 5 track meets below 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, b₁For floating parameter, k is conversion coefficient, wherein :- 75mm≤x≤D₂/ 2,115mm≤y≤D₂/ 2,300mm≤R≤340mm, 60mm≤R₁≤ 80mm ,-10mm≤b₁≤ 10mm, k =3～3.2；

On concave disk, outside the finger-type gear teeth, flank profil BC curve 4 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, b₂For floating parameter, k is conversion coefficient, wherein :- 75mm≤x≤D₂/2,115mm≤y≤D₂/2,300mm≤R≤340mm,60mm≤R₂≤ 80mm ,-10mm≤b₂≤ 10mm, k =3～3.2；

R concave disk radius of curvature

D₂Dial stubble wheel two-dimension projection tip diameter

R finger-type gear teeth root radius

R₁Flank profil ED sweep inside the finger-type gear teeth

R₂Flank 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 along concave disk root circle 3 On 14, identical at same concave surface and radius of curvature with concave disk 14, concave disk radius of curvature R takes 300-340mm, and thickness takes 3-9mm。

As shown in Fig. 5, Fig. 6 and Fig. 7, first group of stubble wheel 1 and the second group of stubble wheel 15 by mechanism's link 12 connect in " people " font is fixed on hanger 13 two ends, staggered in facility direction of advance, and first group of stubble wheel 1 and second group of stubble take turns 15 Front end is restrained but is not interfered.The outer counter of first group of stubble wheel 1 and second group of stubble wheel 15 in the upright projection on ground, first group It is 20 °～50 ° that the tangent line of the respective center of stubble wheel 1 and second group of stubble wheel 15 is all at an angle of α, α with unit direction of advance.First Dial stubble wheel 1 and the excircle dimension D of second group of stubble wheel 15₂For 285mm.

First group of stubble wheel 1 becomes " people " font staggered with second group of stubble wheel 15 upright projection on ground, and both Operating area in facility direction of advance partly overlaps, 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) is recessed The edge vertex angle theta value 60 ° of face disk, concave disk outside circle 11 takes D₂=300mm, tooth root EF curve 6 takes r=8mm.First Dial the finger-type gear teeth 2 contour curve excavation movement locus feature with reference to mole pawl toe of stubble wheel 1.Coefficient k=3, in the finger-type gear teeth Side 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, unit in coordinate system For mm, inside the finger-type gear teeth, flank profil ED curve 5 is the one section of curve meeting above-mentioned equation, and the scope of x, y defines the finger-type gear teeth The scope of inner side flank profil ED curve 5.

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, unit in coordinate system For mm, outside the finger-type gear teeth, flank profil BC curve 4 is the one section of curve meeting above-mentioned equation, and the scope of x, y defines the finger-type gear teeth The scope of outside flank profil BC curve 4.

Embodiment two:

As shown in Figure 2 and Figure 4, concave disk radius of curvature 9, the edge vertex angle theta of concave disk, concave disk outside circle 11 And tooth root EF curve 6 size constancy, embodiment two is unlike embodiment one: the finger-type gear teeth 2 profile of first group of stubble wheel 1 Changing, tooth length shortens, and outside the finger-type gear teeth, flank profil BC curve 4 radius increases, flank profil ED curve 5 radius inside the finger-type gear teeth Increase.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, unit in coordinate system For mm, inside the finger-type gear teeth, flank profil ED curve 5 is the one section of curve meeting above-mentioned equation, and the scope of x, y defines the finger-type gear teeth The scope of inner side flank profil ED curve 5.

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, single in coordinate system Position is mm, and outside the finger-type gear teeth, flank profil BC curve 4 is the one section of curve meeting above-mentioned equation, and the scope of x, y defines that finger-type is taken turns The scope of flank profil BC curve 4 outside tooth.

Claims (3)

1. one kind has a bionical claw structure concave surface Bo Cha mechanism, it is characterised in that: there is first group of stubble wheel (1) and second group Stubble wheel (15), it is identical that second group of stubble wheel (15) takes turns (1) structure with first group of stubble, the rotation direction difference of the finger-type gear teeth (2), first group of stubble Wheel (1) includes mounting plane (8) and concave disk (14), and zone line is mounting plane (8), the diameter of mounting plane (8) D₁；Concave disk (14) is a spherical crown curved surface part, and concave disk radius of curvature R is 300-340mm, the top, edge of concave disk 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 uniformly distributed along gear teeth root circle (3) On the spherical crown curved surface of concave disk (14) place, the quantity 8 of the finger-type gear teeth (2)～16, flank profil BC curve outside the finger-type gear teeth Radius R₂Less than flank profil ED sweep R inside the finger-type gear teeth₁；

Outside the finger-type gear teeth, AB straight line (7) is 15 ° with radially lonizing radiation angle β, the tip diameter value of first group of stubble wheel (1) Scope 280mm≤D₂≤ 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:

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

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

In formula: x, y, z is the rectangular coordinate system in space axle set up, b₁For floating parameter, k is conversion coefficient, wherein :-75mm≤x ≤D₂/ 2,115mm≤y≤D₂/ 2,300mm≤R≤340mm, 60mm≤R₁≤ 80mm ,-10mm≤b₁≤ 10mm, k=3～ 3.2；

Outside the upper finger-type gear teeth of concave disk (14), flank profil BC curve (4) 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, b₂For floating parameter, k is conversion coefficient, wherein :-75mm≤x ≤D₂/ 2,115mm≤y≤D₂/ 2,300mm≤R≤340mm, 60mm≤R₂≤ 80mm ,-10mm≤b₂≤ 10mm, k=3～ 3.2；

R concave disk radius of curvature

D₂Dial stubble wheel two-dimension projection tip diameter

R finger-type gear teeth root radius

R₁Flank profil ED sweep inside the finger-type gear teeth

R₂Flank profil BC sweep outside the finger-type gear teeth.

A kind of concave surface Bo Cha mechanism with bionical claw structure the most according to claim 1, it is characterised in that: described First group of stubble wheel (1) and second group of stubble wheel (15) are crisscross arranged in " people " font and pass through hanger (13) and be fixed on mechanism's link (12) there is overlapping region, overlay region in two ends, first group of stubble wheel (1) and second group of stubble wheel (15) operation interval in a forward direction Field width degree is d, and wherein d is 20mm～100mm；First group of stubble wheel (1) and second group of stubble wheel (15) mounting plane are thrown on the ground It is 20 °～50 ° that shadow and direction of advance angle are α, α.

A kind of concave surface Bo Cha mechanism with bionical claw structure the most according to claim 1, it is characterised in that: described 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 mole pawl toe forms.