CN202444738U

CN202444738U - Compound anti-drag deep scarification shovel

Info

Publication number: CN202444738U
Application number: CN2011205267699U
Authority: CN
Inventors: 贾洪雷; 张强; 于路路; 于海业; 孙裕晶; 肖英奎; 张蕾; 张璐; 刘宪军
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2011-12-16
Filing date: 2011-12-16
Publication date: 2012-09-26
Anticipated expiration: 2021-12-16

Abstract

The utility model relates to a composite drag-reducing subsoiling shovel in the field of agricultural tillage and land preparation machinery, which consists of a shovel handle and a composite shovel tip connected to the shovel handle by bolts, and the shovel handle is connected by a frame from top to bottom. section (H ₁ ), inclined working section (H ₂ ), profiling working section (BC, DE) and blade tip connection section (L); the characteristic is that the blade tip installation plane and horizontal plane clip of the blade tip connection section The angle (α) is 20°～23°; the angle (β) between the front edge line of the inclined working section and the plumb surface is 22°～35°; Line (DE) is a curve obtained according to the following two polynomial equations respectively: , Compared with the existing subsoiling shovels on the market, especially when the subsoiling depth is in the range of 200mm to 400mm, the working resistance is reduced by 6% to 12%. Conducive to saving energy consumption.

Description

Combined type drag reduction deep soil loosing shovel

Technical field

The utility model relates to a kind of deep soil loosing shovel that agricultural is ploughed the tillage operation mechanical field.

Background technology

Dark loose technology is one of important agricultural protection property farming technique, has obtained extensive use at home and abroad, and in agricultural production, has played an increasingly important role, for agricultural sustainable development provides a technical guarantee.But the energy consumption of traditional subsoiler tool is bigger; Particularly the increase facility tractive resistance along with the dark loose degree of depth and machine forwarding speed enlarges markedly; Need the big-power tractor traction could implement operation, therefore reduce the subsoiler tillage resistance, have great importance for energy efficient.Deep soil loosing shovel is to realize chesson on the subsoiler tool; Break tillage pan; The conservation tillage facility of soil do not overturn; Mainly be made up of deep soil loosing shovel handle and spear, because the process of cutting soil, fragmentation and loosening soil of deep soil loosing shovel is carried out simultaneously, its planform is very big to the soil cultivation drag effects of subsoiler tool.

Existing " bionic, drag-reducing deep soil loosing shovel handle " is through imitating the pawl toe structural form of some soil animal, and the traditional deep soil loosing shovel handle of a kind of ratio that goes out through the equal proportion amplification design has the curvilinear structures of drag-reduction effect.Its curve is a curve of using the polynomial equation relevant with tilling depth to make, and therefore, when tilling depth changes, corresponding spade structural parameters will change thereupon, produces a tilling depth and requires corresponding spade phenomenon.In addition and since soil animal be through the pawl toe plane, hook, action such as grab soil shredded, transport, and the subsoiler tool normally carries out operation through deep soil loosing shovel mobile, and is different with the motion of soil animal pawl toe.Therefore, except the structural form of imitation pawl toe, the dark loose degree of depth of posture in the time of also will considering operation and adaptation.

The deep soil loosing shovel point is the deep soil loosing shovel important component part, and existing deep soil loosing shovel point mainly contains scalpriform, flechette-type and double-vane shape, and the spear structure also has bigger influence to penetration performance, the scope of loosening the soil and tillage resistance.The soil compactibility at spear place is higher when particularly carrying out dark loose operation with deep soil loosing shovel, and tillage resistance is also bigger.

Summary of the invention

The purpose of the utility model is to the deficiency that exists in the prior art, provides a kind of tillage resistance of new structure little, adapts to the big universal combined drag reduction deep soil loosing shovel of the dark loose degree of depth.

The utility model combined type drag reduction deep soil loosing shovel, as shown in Figure 1, it comprises that 1, one of a spade is connected the complex spear 3 on the spade through bolt 2.Described spade part is as shown in Figure 4, by top-down frame linkage section H ₁, inclination active section H ₂, profiling active section BC, DE and spear linkage section L form the anterior basil of interior directrix

Be 50 °～60 °, cutting edge front-wheel profile is parallel with the interior directrix of spade active section.The spear mounting plane of said spear linkage section L and horizontal plane angle α are 20 °～23 °; Angle β is 22 °～35 ° (generally getting 22 °) between inclination active section nose edge line and the plummet face, and spade produces slight lifting effect to Tu Fa when work, has reduced the extruding of deep soil loosing shovel to soil; Profiling active section imitation soil animal pawl toe outline shape, and control its work posture, making in the profiling active section directrix BC and outer directrix DE is one respectively by following two curves that polynomial equation makes:

y_{1} = 0.00000116 x_{1}^{4} + 0.000579 x_{1}^{3} + 0.100583 x_{1}^{2} + 7.85075 x_{1}

y_{2} = 0.00016 x_{2}^{3} + 0.01783 x_{2}^{2} + 0.9491 x_{2} - 239.00

In the formula: the upper extreme point B with directrix BC in the profiling active section is the origin of coordinates, x axle forward be curve protruding to level forward, Y axle forward be vertical upwards, the x span satisfies-97.64≤x ₁≤0 with-55.686≤x ₂≤74.9954.

Described complex spear such as Fig. 5 and shown in Figure 6, the rear portion, upper surface is that rectangle, anterior sword line mnp are that a symmetrical circular arc line is formed.Its spear wedge angle gamma is 19 °-20 °, and anterior basil θ is 50 °～60 ° (generally getting 60 °), and sword line mnp is the curve that makes by following equation:

y_{3} = &PlusMinus; [\sqrt{R^{2} - {(\frac{\sqrt{3}}{2} R - x_{3})}^{2}} - \frac{1}{2} R]

In the formula: R is an arc radius; With anterior sword endpoints n is the origin of coordinates, and the x axle is that spear symmetry axis, forward point to the rear end, and Y axle forward makes progress, and the x span satisfies

The R span satisfies H ₃≤R≤1.5H ₃, H ₃Be the spear width.

The beneficial effect of the utility model is: the effect of soil cultivation resistance when realizing reducing the deep soil loosing shovel operation through controlling above structural parameters.Be in particular in: inclination active section spade when work produces slight lifting effect to Tu Fa, has reduced the extruding of deep soil loosing shovel to soil, has reduced tillage resistance; The profiling active section has the visbreaking resistance reducing effect; The complex spear has good penetration performance, tillage resistance is little.Research shows; (the deep soil loosing shovel handle adopts straight line, broken line or arc transition type to use existing other types on this deep soil loosing shovel and the market; Deep soil loosing shovel point adopts scalpriform, flechette-type and double-vane shape) deep soil loosing shovel compares, and particularly in the dark loose degree of depth during in 200mm to 400mm scope, working resistance is compared and is reduced by 6%～12%; It is wide to have the dark loose depth bounds of adaptation, helps energy savings consumption.

Description of drawings

Fig. 1 is a combined type deep soil loosing shovel structural representation;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is that A-A shown in Fig. 2 is to cross section view;

Fig. 4 is the spade structural representation;

Fig. 5 is the spear structural representation;

Fig. 6 is the vertical view of Fig. 5;

Fig. 7 is that f-f shown in Figure 6 is to cross section view.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Referring to figs. 1 through Fig. 4, combined type drag reduction deep soil loosing shovel is made up of 1, one complex spear 3 that is connected on the spade 1 through bolt 2 of a spade.Spade 1 is made up of top-down frame linkage section, inclination active section, profiling active section and spear linkage section.The anterior basil of interior directrix

is 50 °～60 °, and cutting edge front-wheel profile is parallel with the interior directrix of spade active section.Be characterized in: the spear mounting plane of spear linkage section and horizontal plane angle α are 20 °～23 °; Angle β is 22 °～35 ° between inclination active section nose edge line and the plummet face; Directrix BC and outer directrix DE are one respectively by following two curves that polynomial equation makes in the profiling active section:

y_{1} = 0.00000116 x_{1}^{4} + 0.000579 x_{1}^{3} + 0.100583 x_{1}^{2} + 7.85075 x_{1}

y_{2} = 0.00016 x_{2}^{3} + 0.01783 x_{2}^{2} + 0.9491 x_{2} - 239.00

Spade adopts the Q275 steel that is not less than GB/T 700 regulations to make spade width L ₂With the span of thickness σ be respectively 72～80mm and 28～35mm, according to the installation requirement of rack construction design connecting hole or jig.Frame linkage section H ₁With inclination active section H ₂The physical dimension scope be respectively 250～260mm and 100～120mm.Spear linkage section L and spiro keyhole position L ₁Value be respectively 82～85mm and 40mm.

By interior directrix BC equation:

y_{1} = 0.00000116 x_{1}^{4} + 0.000579 x_{1}^{3} + 0.100583 x_{1}^{2} + 7.85075 x_{1}

Try to achieve the x of BC section ₁, y ₁Coordinate (unit: mm) calculations list is following:

x ₁	0	-10	-20	-30	-40	-50
							y ₁	0	-69.0166	-121.228	-159.6912	-187.184	-206.205
x ₁	-60	-70	-80	-90	-97.64
							y ₁	-218.977	-227.441	-233.263	-237.829	-241.168

By outer directrix DE equation:

y_{2} = 0.00016 x_{2}^{3} + 0.01783 x_{2}^{2} + 0.9491 x_{2} - 239.00

Confirm the x of outer directrix DE ₂, y ₂Coordinate (unit: mm) calculations list is following:

x ₂	-55.686	-40	-30	-20	-10	0	10
								y ₂	-264.191	-258.676	-255.746	-252.13	-246.868	-239	-227.566
x ₂	20	30	40	50	60	70	74.9954
								y ₂	-211.606	-190.16	-162.268	-126.97	-83.306	-30.316	-0.05284

Extremely shown in Figure 7 like Fig. 5; Rear portion, complex spear 2 upper surface is that rectangle, anterior sword line mnp are made up of a symmetrical circular arc line; The spear wedge angle gamma is 19 °-20 °, and anterior basil θ is 50 °～60 ° (generally getting 60 °), and sword line mnp is the curve that makes by following equation:

y_{3} = &PlusMinus; [\sqrt{R^{2} - {(\frac{\sqrt{3}}{2} R - x_{3})}^{2}} - \frac{1}{2} R]

The R span satisfies H ₃≤R≤1.5H ₃, H ₃Be the spear width.

The deep soil loosing shovel point adopts 65 manganese steel manufacturings of GB/T 711 regulations.Spear width H ₃With thickness H ₄Span be respectively 40～60mm and 10～15mm.The spear length L ₃Span be 165～175mm, spiro keyhole position L ₁Value be 40mm.

Claims

1. A composite drag-reducing subsoiling shovel, composed of a shovel handle (1) and a composite shovel tip (3) connected on the shovel handle (1) by a bolt (2); The lower frame connecting section (H ₁ ), inclined working section (H ₂ ), profiling working section (BC, DE) and shovel tip connecting section (L) constitute the front edge of the inner alignment (BC) 50°～60°, the front contour line of the cutting edge is parallel to the inner alignment (BC) of the working section of the shovel handle, and it is characterized in that: the included angle (α) between the shovel tip installation plane and the horizontal plane of the shovel tip connection section is 20° ～23°; the angle (β) between the front edge line of the inclined working section and the plumb surface is 22°～35°; the inner alignment (BC) and outer alignment (DE) of the profiling working section are a Curves obtained by the following two polynomial equations:

{y the y}_{11} = = 0.00000116 0.00000116 {x x}_{11}^{44} + + 0.000579 0.000579 {x x}_{11}^{33} + + 0.100583 0.100583 {x x}_{11}^{22} + + 7.85075 7.85075 {x x}_{11}

{y the y}_{22} = = 0.00016 0.00016 {x x}_{22}^{33} + + 0.01783 0.01783 {x x}_{22}^{22} + + 0.9491 0.9491 {x x}_{22} - - 239.00 239.00

In the formula: take the upper end point B of the alignment line BC in the profiling work section as the coordinate origin, the positive direction of the x-axis is the convex direction of the curve horizontally forward, and the positive direction of the Y-axis is the vertical upward direction, and the value range of x satisfies -97.64≤ x ₁ ≤ 0 and -55.686 ≤ x ₂ ≤ 74.9954.

2. A compound drag-reducing subsoiling shovel according to claim 1, characterized in that: the rear part of the upper end surface of the compound-shaped shovel point (3) is rectangular, and the front edge line (mnp) is a symmetrical Composed of circular arc lines, the blade tip wedge angle (γ) is 19°-20°, the front edge angle (θ) is 50°-60°, and the front edge line (mnp) is a curve obtained according to the following equation:

{y the y}_{33} = = &PlusMinus; &PlusMinus; [[\sqrt{{R R}^{22} - - {((\frac{\sqrt{33}}{22} R R - - {x x}_{33}))}^{22}} - - \frac{11}{22} R R]]

In the formula: R is the radius of the arc; the end point n of the front edge line is the coordinate origin, the x-axis is the symmetry axis of the blade tip, the forward direction points to the rear end, the Y-axis is positive upward, and the value range of x satisfies

The value range of R satisfies H ₃ ≤ R ≤ 1.5H ₃ , and H ₃ is the blade tip width.