CN109892070A - A kind of furrow-opening cutter blade suitable for cobblestone intensity surface layer - Google Patents
A kind of furrow-opening cutter blade suitable for cobblestone intensity surface layer Download PDFInfo
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- CN109892070A CN109892070A CN201910309094.3A CN201910309094A CN109892070A CN 109892070 A CN109892070 A CN 109892070A CN 201910309094 A CN201910309094 A CN 201910309094A CN 109892070 A CN109892070 A CN 109892070A
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Abstract
The invention discloses a kind of furrow-opening cutter blade suitable for cobblestone intensity surface layer, including two parts of fixing body and cutter hub, the fixing body and cutter hub are distributed up and down, and the two is linked to be an entirety；The fixing body includes a fixing body top surface, four installation body side surfaces, four fixing body edge curved surfaces, four fixing body edge planes, a fixing body bottom surface area defined；The cutter hub includes a cutter hub top surface, four cutter hub sides, a blade face area defined.The present invention can be useful in High aititude cold district natural meadow surface layer, solve the channeling problem under cobblestone intensity surface layer cobble-stone is larger and densely distributed state, significant to the ecological protection and construction project of High aititude natural meadow.
Description
Technical field
The invention belongs to special equipments and technical field of energy saving and environmental protection, and in particular to one kind is suitable for the intensive ground of cobblestone
The furrow-opening cutter blade on surface layer.
Background technique
In the ecological protection and construction of the natural meadow of High aititude cold district, no-tillage seeding technology by its can compared with
Sowing is realized under the premise of the small amount of breaking ground and is used widely.However, in the surface layer of the natural meadow of high altitude localities,
The distribution of cobblestone is very intensive, and especially large-scale cobblestone, this will seriously affect the application effect of no-tillage seeding technology.Its
In, furrow-opening cutter blade is the key technology of no-tillage seeding technology.
In the prior art, people have carried out many work in trench digging technology, specifically include:
Application No. is the China of " 201720710080.9 ", entitled " a kind of no-tillage seeding machine on flexible plough " are real
Provide a kind of plough monomer with new patent, including square steel, turret head screw rod with holes bolt, extension spring, fastening bolt,
Plough main body, rectangular iron plate, Bulldozing mechanism, the utility model take into account plough damping and avoid plough because colliding with stone
And damage and with certain ability of following an example, the ditch outputed is made also to be able to maintain identical depth on the soil of out-of-flatness, benefit
In seed growth and follow-up management.But the plough monomer still has deficiency, plough uses the trench digging of ploughshare type
Knife, when ditching knife encounters the stone in soil layer, flexible characteristic makes it that can only avoid stone, rather than stone is taken out or moved
Dynamic, when stone distribution density is larger and stone is larger, ditching knife can not ditch because constantly avoiding stone.Therefore,
The utility model is obviously poorly suitable for the surface layer of stone intensity, is only applicable to the less working environment of stone.
Application No. is in " 201820942367.9 ", entitled " a kind of automatic after culture machine restored for steppe vegetation "
State's utility model patent provide it is a kind of in inverted triangle cone or barb-shaped trench digging follow closely, still, the trench digging nail there are still deficiencies, open
Ditch nail presses in soil layer in automatic after culture machine self gravitation effect, and by the induced effect of tractor, trench digging nail scratches soil layer
At ditch.In trench digging, trench digging nail in vertical state, small-sized stone can be loosened with soil layer, when encountering compared with ratchel, due to
It can not avoid large-scale stone or be allowed to move, directly contribute the situation that metal touches " very stiff and demanding " of stone, trench digging nail serious wear
While, the bending for easily causing trench digging to follow closely even is broken.Therefore, the trench digging nail which provides can not solve in soil layer
Large-scale stone problem, be only suitable for elastic in soil property being suitable for and working in the smaller and few soil layer of stone.
Application No. is the Chinese utility model patents of " 201821070699.9 ", entitled " a kind of double-arc spline ditching machine " to mention
A kind of ditching knife is supplied, the cutting edge of the ditching knife forms arcuation towards machine frame inside.But the ditching knife that the utility model provides
There are still deficiency, i.e. the ditching knife edge of arcuation does not indicate the design parameter of radian (radius) and centre point position, therefore,
The shape and size of ditching knife blade can not determine, not have machinability, and when encountering stone, working effect just can not be protected
Card.
Application No. is " 201811243509.3 ", the middle promulgateds by the State Council of entitled " a kind of agricultural ditching device for facilitating adjusting "
Bright patent provides a kind of colter and jointer knife.However, there are still deficiencies, i.e. the two sides blade of colter for the colter of invention offer
The curve to concave for two, top are the curves of a convex, and the intersection area of inner concave curve and convex outer curve is just as a result,
A more sharp keen angle is formd, i.e. change in shape is very violent, when large-scale stone is encountered at the angle position, it may appear that
The phenomenon that " very stiff and demanding ", it is easy to cause the drastic deformation at angle position to be even broken, to influence the service life of colter.This
Outside, which provides a kind of scraper bowl that ditching device forefront is arranged in, and can play cleaning plant front obstacle
Effect, to prevent influencing trench digging effect or damage colter, but to hard objects such as large-scale stones in the soil layer, do not refer to as
What is taken precautions against or solves.Therefore, the colter which provides is only suitable in soil property the environment for not having large-scale stone, and stone is distributed
The larger and larger soil property environment of density is simultaneously not suitable for.
Application No. is the Chinese utility model patents of " 201020574610.X ", entitled " a kind of ditching knife " to provide one
The blade of kind spiral form, including wheel rim, are evenly distributed with several spiral form blades in the periphery of wheel rim；Spiral form knife
Towards inside, the unearthed direction that utility model is excavated changes the cutter head of piece as angle is different, can to the left, right and up
It is unearthed, has excavation resistance small, the good feature of effect of being unearthed of ditching；In addition also have by the hand of spiral conveying soil, by circumference from
Throw the function of soil in mental and physical efforts direction.The utility model is obvious in the unearthed performance advantage of trench digging, but there are still deficiencies for its blade.If touching
To large-scale stone, stone enters the region between adjacent knife blades, easily causes ditching knife work to be obstructed, more seriously, opens
Digging resistance can increased dramatically moment, and the blade of spiral form can generate severely deformed or even fracture, serious shadow because being collided
Ring the service performance and service life of blade.In addition, the utility model provide ditching knife trench digging when, the blade of spiral form
So that the amount of breaking ground is very big, no-tillage seeding is made to lose meaning.Therefore, the ditching knife which provides, is only applicable to stone
It is distributed in the lesser arable land of less and scale and uses, be not suitable for using in the natural meadow surface layer of cobblestone intensity.
In the surface soil layer of High aititude cold district natural meadow, it will usually have more scale not equal gravel, be located at
The Tibet in Southwestern China area, is typical High aititude cold district, and the natural meadow for having area vast, surface layer
Gravel majority exists in cobblestone morphology, and stone is larger and densely distributed in surface soil layer, and existing trench digging skill
Art obviously and is not suitable for this.
Summary of the invention
For the above-mentioned problems in the prior art, the present invention provides one kind to be suitable for cobblestone intensity surface layer
Furrow-opening cutter blade, High aititude cold district natural meadow surface layer can be useful in, solved in cobblestone intensity surface layer
Channeling problem under gravel is larger and densely distributed state, ecological protection and construction project meaning to High aititude natural meadow
Justice is great.
For this purpose, the invention adopts the following technical scheme:
A kind of furrow-opening cutter blade suitable for cobblestone intensity surface layer, including two parts of fixing body and cutter hub, it is described
Fixing body and cutter hub are distributed up and down, and the two is linked to be an entirety；The fixing body includes a fixing body top surface, four fixing bodies
Side, four fixing body edge curved surfaces, four fixing body edge planes, a fixing body bottom surface area defined；The knife
Body includes a cutter hub top surface, four cutter hub sides, a blade face area defined.
Preferably, cylindrical hole there are two setting on the installation body side surface, is located at two opposite installation body side surfaces
Middle position, for furrow-opening cutter blade to be mounted in corresponding ditching device.
Preferably, the fixing body top surface is a plane, positioned at the top of furrow-opening cutter blade；The installation body side surface is
Curved surface, the curved surface have four edges, including three straight lines and a parabola；The fixing body edge curved surface is curved surface, the curved surface
There are three sides, including two straight lines and a parabola；The fixing body edge plane is plane, which has three sides, institute
Stating three sides is straight line；The fixing body bottom surface is plane, which has four edges, including two straight lines and two parabolics
Line.
It is preferably located at the installation body side surface, fixing body edge curved surface, fixing body edge plane of the same side successively horizontal row
Column, wherein the boundary of the installation body side surface and fixing body edge curved surface is straight line, the fixing body edge curved surface and fixing body
The boundary of edge plane is straight line.
Preferably, the installation body side surface of the fixing body top surface and the same side, fixing body edge curved surface, fixing body edge are flat
The boundary in face is respectively straight line, point, straight line.
Preferably, the cutter hub top surface is plane, which has four edges, including two straight lines and two parabolas；Institute
Stating cutter hub side is curved surface, which has three sides, and three sides are parabola；The blade face is a paraboloid,
The paraboloidal section shape is parabola.
Cutter hub side and the blade face for being preferably located at the same side are horizontally arranged, and it is parabola that the two, which is had a common boundary,.
Preferably, the installation body side surface and cutter hub side are arranged above and below, and it is parabola that the two, which is had a common boundary,；The fixing body side
Portion's curved surface and blade face are arranged above and below, and it is parabola that the two, which is had a common boundary,；The fixing body edge plane and blade face are arranged above and below, and two
It is point that person, which is had a common boundary,.
Preferably, the fixing body bottom surface and cutter hub top surface are completely coincident.
Preferably, the material of the furrow-opening cutter blade integrally uses potassium steel.
Compared with prior art, the beneficial effects of the present invention are:
(1) it is useful in High aititude cold district natural meadow surface layer, solves cobblestone intensity surface layer cobble-stone
Channeling problem under larger and densely distributed state, ecological protection and construction project meaning weight to High aititude natural meadow
Greatly.
(2) ditching depth of furrow-opening cutter blade provided by the present invention and trench digging even width, applied widely, process of ditching
Continuously.
(3) Parabolic blade face shape has gradually changeable, and furrow-opening cutter blade is made under hard hit to there is self-shield to make
With improving the impact resistance ability of furrow-opening cutter blade.
(4) durability of furrow-opening cutter blade provided by the present invention is high, and trench digging is not affected in the surface layer of pure cobblestone
The normal use of blade, blade face have collision self-protection function.
Detailed description of the invention
Fig. 1 is a kind of main view of furrow-opening cutter blade suitable for cobblestone intensity surface layer provided by the present invention.
Fig. 2 is a kind of right view of furrow-opening cutter blade suitable for cobblestone intensity surface layer provided by the present invention.
Specific embodiment
With reference to the accompanying drawing and specific embodiment come the present invention will be described in detail, specific embodiment therein and explanation only
For explaining the present invention, but it is not as a limitation of the invention.
The invention discloses a kind of furrow-opening cutter blade suitable for cobblestone intensity surface layer, which includes installation
Two parts of body and cutter hub, fixing body be by a fixing body top surface, four installation body side surfaces, four fixing body edge curved surfaces,
The region that 16 faces such as four fixing body edge planes, a fixing body bottom surface, two cylindrical surfaces surround；Cutter hub is by one
The region that six faces such as cutter hub top surface, four cutter hub sides, a blade face surround.Furrow-opening cutter blade is by a fixing body top
Face, four installation body side surfaces, four fixing body edge curved surfaces, four fixing body edge planes, four cutter hub sides, a blade
The interior zone that 18, face etc. face surrounds subtracts inclusion region inside two cylindrical surfaces and is formed.
Fig. 1 is the main view (X-Y) of furrow-opening cutter blade, characterizes the shape of the furrow-opening cutter blade and the main point of position in view
Coordinate is as follows: O (0,0), K (0,3), A (- 40,60), B (- 38.99,60), C (38.99,60), D (40,60), G (0,60), E
(- 30.25,90), H (0,90), F (30.25,90), O1(- 15,75), O2(15,75).Fig. 2 is the right view (Z- of furrow-opening cutter blade
Y), the main point coordinate of shape and position that furrow-opening cutter blade is characterized in view is as follows: O'(0,0), K'(-1.5,3), K " (1.5,
3), G'(-7.5,60), G " (7.5,60), C'(-1.5,60), C " (1.5,60), D'(0,60), F'(-5,90), F " (5,90).
Above-mentioned coordinate unit is all made of millimeter.Furrow-opening cutter blade is symmetrical with Y-axis in main view and right view, for convenience of ditching knife is described
Each section of piece constitutes, position and connection relationship, only describes furrow-opening cutter blade here and is located at main view first quartile and right view the
Part in one quadrant.
The fixing body top surface (being HF in attached drawing 1, be L'F " in attached drawing 2) is a plane perpendicular to Y-axis, is in (y
(x)=60,0≤x≤30,0≤z≤7.5) region that is included.
The installation body side surface (being HGCF, F " C " G " in Fig. 2 in Fig. 1) is a curved surface, and four sides of the curved surface are three
Straight line and a parabola, curvilinear equation be respectively straight line HF (y=90, z=5,0≤x≤40), straight line HG (y (z)=-
12z+150, x=0,60≤y≤90), straight line FC (y (x)=- 3.337x+190.111,30≤x≤38.99, y (z)=
24.857z-34.286 1.5≤z≤5), parabola GC (x=-0.722z2+ 40.615, y=60,1.5≤z≤7.5).
The fixing body edge curved surface (being FCD in Fig. 1, be F " C " D' in Fig. 2) is a curved surface, and three sides of the curved surface are
Two straight lines and a parabola, curvilinear equation be respectively straight line FC (y (x)=- 3.337x+190.111,30≤x≤
38.99, y (z)=24.857z-34.286,1.5≤z≤5), straight line FD (y (x)=- 3x+180,30≤x≤40, y (z)=6z
+ 60,0≤z≤5), parabola CD (x (z)=- 0.449z2+ 40, y=60,0≤z≤1.5).
The fixing body edge plane (being FD in Fig. 1, be F " D'L' in Fig. 2) is a flat surface, and three sides in the face are
Straight line, curvilinear equation are straight line FD (y (x)=- 3x+180,30≤x≤40, y (z)=6z+60,0≤z≤5), straight line respectively
L'D'(y (x)=- 3x+180,30≤x≤40,60≤y≤90, z=0), straight line L'F " (y=90, x=30,0≤z≤5).Peace
Angle between dress body edge plane and Y-axis is set as 18 degree.
The fixing body bottom surface (being GCD in Fig. 1, be D " G " in Fig. 2) is a flat surface, and four sides in the face are two straight lines
With two parabolas, curvilinear equation is straight line GD (y=60,0≤x≤40, z=0), straight line D'G " (y=60,0≤z respectively
≤ 7.5, x=0), parabola CD (x (z)=- 0.449z2+40, y=60,0≤z≤1.5), parabola GC (x=-0.722z2+
40.615, y=60,1.5≤z≤7.5).
The cylindrical surface (is round O in Fig. 12) equation are as follows: (x-15)2+(y-75)2=100,70≤y≤80, cylindrical surface
Center line (x=15, y=75,0≤z≤6.25).The region for being included inside cylindrical surface is set as hollow form, can pass through
Bolt realizes the installation of furrow-opening cutter blade.
The cutter hub top surface (being GCD in Fig. 1, be D " G " in Fig. 2) is a flat surface, four sides in the face be two straight lines and
Two parabolas, curvilinear equation be respectively straight line GD (y=60,0≤x≤40, z=0), straight line D'G " (y=60,0≤z≤
7.5, x=0), parabola CD (x (z)=- 0.449z2+ 40, y=60,0≤z≤1.5), parabola GC (x=-0.722z2+
40.615, y=60,1.5≤z≤7.5).
The cutter hub side (being GKC in Fig. 1, be G " K " C " in Fig. 2) is a curved surface, and three sides of the curved surface are parabolic
Line, curvilinear equation are respectively parabola GC (x=-0.722z2+ 40.615, y=60,1.5≤z≤7.5), parabola G'K'
(y (z)=66.5z2- 140.625,3≤y≤60,1.5≤z≤7.5), parabola CK (y (x)=0.0375x2+ 3, y (z)=
9.5z-11.25 0≤x≤38.99).
The blade face (being KODC in Fig. 1, be L'O'K " C " in Fig. 2) is a paraboloid, and four sides of the curved surface are
Parabola, curvilinear equation are parabola CK (y (x)=0.0375x respectively2+ 3, y (z)=9.5z-11.25,0≤x≤
38.99), parabola O'K'(y (z)=1.333z2, x=0,0≤z≤1.5), parabola OD (y (x)=0.0375x2, 0≤y≤
60, z=0), parabola CD (x (z)=- 0.449z2+ 40, y=60,0≤z≤1.5).
Straight line HF, point F, straight line L'F " are fixing body top surface and installation body side surface, fixing body edge curved surface, fixing body respectively
The boundary of edge plane.The installation body side surface, fixing body edge curved surface, fixing body edge plane are successively horizontally arranged, installation
The boundary of body side surface and fixing body edge curved surface is straight line FC, and the boundary of fixing body edge curved surface and fixing body edge plane is straight
Line FD.The furrow-opening cutter blade material integrally uses potassium steel.
The cutter hub side and blade face are horizontally arranged, and it is parabola CK that the two, which is had a common boundary,.The installation body side surface and cutter hub
Side is arranged above and below, and it is parabola GC that the two, which is had a common boundary,.The fixing body edge curved surface and blade face are arranged above and below, and the two boundary is
Parabola CD.The fixing body edge plane and blade face are arranged above and below, and it is point D that the two, which is had a common boundary,.The fixing body bottom surface and knife
Body top surface, the two are completely coincident.
Embodiment 1
In the present embodiment, by 20 bolts, 10 furrow-opening cutter blades are mounted on ring flange, ring flange is welded on certain and opens
In the rotation axis of ditch machine, ditching machine forward speed is set as 10,000 ms/h, and rotation axis revolving speed is set as 700 revs/min.?
(within 10 centimetres of below ground, average diameter is more than 30 centimetres of large-scale cobblestone to the surface layer on cobblestone intensity meadow
Distribution density is more than 2.5 pieces/cubic metre, and average diameter is more than between the distribution density of 3 to 30 centimetres of middle-size and small-size cobblestone
3000 pieces/cubic metre) on carry out trench digging effect test, ditch 100 meters of distance, large-scale cobblestone observed in test in furrow-opening cutter blade
Under the action of change in location situation and counted after experiment, 30 points are randomly selected after test and carry out ditching depths and width
Degree measurement.Test result is as shown in Table 1 to Table 3:
Table 1 randomly selects the ditching depth Data-Statistics table (unit: millimeter) of 30 points
Table 2 randomly selects the trench digging width value statistical form (unit: millimeter) of 30 points
The large-scale cobblestone quantity statistics table of table 3
Trench digging effect test statistics indicate that: carry out trench digging effect test on the surface layer on cobblestone intensity meadow, adopt
With the furrow-opening cutter blade of the present embodiment, significant technical effect is achieved: in the ditching depth that 30 points randomly selected carry out
In width measurement, average ditching depth is 45.3 millimeters, and maximum ditching depth is 69 millimeters, and minimum ditching depth is 31 millis
Rice, 80% point of ditching depth are located within the scope of 45 ± 10 millimeters, illustrate that ditching depth is uniform；Averagely trench digging width is 12.3 millis
Rice, maximum trench digging width is 16 millimeters, and minimum trench digging width is 10 millimeters, and 90% point of trench digging width is located at 12 ± 2 millimeters of models
In enclosing, illustrate even width of ditching.
The large-scale cobblestone quantity encountered in test is 9 pieces total, wherein being moved 7 pieces, is removed 2 pieces of surface layer.When big
The fraction of type cobblestone is in below ground, and under the collision effect of furrow-opening cutter blade, large-scale cobblestone generates rotation and movement
And it is removed ground, furrow-opening cutter blade continues to ditch；When large-scale cobblestone largely or entirely be located at surface layer below when, trench digging
Blade can not be mobile by large-scale cobblestone, in addition the parabolic type blade face of furrow-opening cutter blade, is colliding large-scale cobblestone
It is squeezed effect simultaneously and generates rotation, concedes certain space, furrow-opening cutter blade continues to ditch.Parabolic blade face shape
With gradually changeable, makes furrow-opening cutter blade that there is self-shield effect under hard hit, improve the impact resistance ability of furrow-opening cutter blade.
Embodiment 2
In the present embodiment, the quantity and mounting means of furrow-opening cutter blade are same as Example 1, the difference is that: this reality
Applying example is the collision endurance test in the furrow-opening cutter blade and cobblestone of the surface layer progress of pure cobblestone, and test distance is 50,000
Rice.The damage situation of the furrow-opening cutter blade is checked in test later.Obtained experimental result is as shown in table 4:
4 furrow-opening cutter blade of table damages statistical form
Collide endurance test statistics indicate that: the present embodiment use furrow-opening cutter blade in the surface layer of pure cobblestone with goose ovum
Stone carries out the impact test of 50 kms, has obtained significant technical effect: in 10 furrow-opening cutter blades of test, not having occurred because opening
Ditch blade breakages and the case where scrap, the blade of only 1 furrow-opening cutter blade is impaired, and the cutter hub side of all furrow-opening cutter blades occurs
Slight scratch, but do not affect the normal use of furrow-opening cutter blade, it was demonstrated that the durability of furrow-opening cutter blade is high.
Above-mentioned test result, have benefited from cutter hub blade face and cutter hub side parabolic type design so that blade face and
The shape of cutter hub side has gradually changeable.When the blade face of cutter hub encounters large-scale cobblestone, when large-scale cobblestone can not be moved
When dynamic, large-scale cobblestone can generate rotation under the action of the blade face of gradually changeable, to guarantee being normally carried out for trench digging work, this
So that blade face has collision self-protection function in the case where not influencing and working normally；The scratch of cutter hub side is cutter hub
After side is contacted with cobblestone, is formed in the case where compressing and rubbing against effect, be the wear problem of metal, belong to normal phenomenon.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to restrict the invention, all in essence of the invention
Made any modification, equivalent replacement and improvement etc., should be included in protection scope of the present invention within mind and spirit
Within.
Claims (10)
1. a kind of furrow-opening cutter blade suitable for cobblestone intensity surface layer, including two parts of fixing body and cutter hub, feature
Be: the fixing body and cutter hub are distributed up and down, and the two is linked to be an entirety；The fixing body include a fixing body top surface,
The area that four installation body side surfaces, four fixing body edge curved surfaces, four fixing body edge planes, a fixing body bottom surfaces are surrounded
Domain；The cutter hub includes a cutter hub top surface, four cutter hub sides, a blade face area defined.
2. a kind of furrow-opening cutter blade suitable for cobblestone intensity surface layer according to claim 1, it is characterised in that: institute
It states and sets on installation body side surface there are two cylindrical hole, be located at the middle position of two opposite installation body side surfaces, being used for will
Furrow-opening cutter blade is mounted in corresponding ditching device.
3. a kind of furrow-opening cutter blade suitable for cobblestone intensity surface layer according to claim 1, it is characterised in that: institute
Stating fixing body top surface is a plane, positioned at the top of furrow-opening cutter blade；The installation body side surface is curved surface, which has four
Side, including three straight lines and a parabola；The fixing body edge curved surface is curved surface, which has three sides, including two
Straight line and a parabola；The fixing body edge plane is plane, which has three sides, and three sides are straight line；
The fixing body bottom surface is plane, which has four edges, including two straight lines and two parabolas.
4. a kind of furrow-opening cutter blade suitable for cobblestone intensity surface layer according to claim 3, it is characterised in that: position
Installation body side surface, fixing body edge curved surface, fixing body edge plane in the same side is successively horizontally arranged, wherein the installation
The boundary of body side surface and fixing body edge curved surface is straight line, and the boundary of the fixing body edge curved surface and fixing body edge plane is
Straight line.
5. a kind of furrow-opening cutter blade suitable for cobblestone intensity surface layer according to claim 3, it is characterised in that: institute
It is respectively straight to state fixing body top surface and the installation body side surface of the same side, fixing body edge curved surface, the boundary of fixing body edge plane
Line, point, straight line.
6. a kind of furrow-opening cutter blade suitable for cobblestone intensity surface layer according to claim 1, it is characterised in that: institute
Stating cutter hub top surface is plane, which has four edges, including two straight lines and two parabolas；The cutter hub side is curved surface,
The curved surface has three sides, and three sides are parabola；The blade face is a paraboloid, the paraboloidal section shape
Shape is parabola.
7. a kind of furrow-opening cutter blade suitable for cobblestone intensity surface layer according to claim 6, it is characterised in that: position
Horizontally arranged in the cutter hub side of the same side and blade face, it is parabola that the two, which is had a common boundary,.
8. a kind of furrow-opening cutter blade suitable for cobblestone intensity surface layer according to claim 6, it is characterised in that: institute
It states installation body side surface and cutter hub side is arranged above and below, it is parabola that the two, which is had a common boundary,；On the fixing body edge curved surface and blade face
Lower arrangement, it is parabola that the two, which is had a common boundary,；The fixing body edge plane and blade face are arranged above and below, and it is point that the two, which is had a common boundary,.
9. a kind of furrow-opening cutter blade suitable for cobblestone intensity surface layer according to claim 1, it is characterised in that: institute
Fixing body bottom surface and cutter hub top surface is stated to be completely coincident.
10. a kind of furrow-opening cutter blade suitable for cobblestone intensity surface layer according to any one of claim 1 to 9,
It is characterized by: the material of the furrow-opening cutter blade integrally uses potassium steel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910309094.3A CN109892070B (en) | 2019-04-17 | 2019-04-17 | Ditching blade suitable for cobble intensive ground surface layer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910309094.3A CN109892070B (en) | 2019-04-17 | 2019-04-17 | Ditching blade suitable for cobble intensive ground surface layer |
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