CN107124963A - The device and its design method of a kind of novel household weeder - Google Patents
The device and its design method of a kind of novel household weeder Download PDFInfo
- Publication number
- CN107124963A CN107124963A CN201710474321.9A CN201710474321A CN107124963A CN 107124963 A CN107124963 A CN 107124963A CN 201710474321 A CN201710474321 A CN 201710474321A CN 107124963 A CN107124963 A CN 107124963A
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- China
- Prior art keywords
- axle
- gear
- tooth
- weeder
- angular wheel
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
Abstract
The invention belongs to daily apparatus field, the device and its design method of a kind of novel household weeder are disclosed, device is provided with rocking bar；Rocking bar is socketed in one end of I axle；The other end of I axle is socketed with the first angular wheel；First angular wheel is engaged with the second angular wheel；Second angular wheel is connected with active spur gear by II axle；Active spur gear is engaged with passive spur gear；Passive spur gear is connected with blade by III axle；Design method includes driving gear drive by manpower, and gear drive includes angular wheel and spur gear, the final machine components for driving blade movement, the design of assembling；The main parameter to gear is calculated.The present invention is driven to reduce the pollution to environment by novel manpower driving mechanical, and a large amount of discharge toxic gases for excluding diesel engine are protected to environment, virtually bring it is healthy take exercises, while being also that protection to the energy plays vital effect.
Description
Technical field
The invention belongs to the device and its design of daily apparatus technical field, more particularly to a kind of novel household weeder
Method.
Background technology
At present, in the field in rural area, weeds are on one of crop growth influence.Because landform is changeable
Seldom it can go to cut weeds with big machinery is obtained, can only be by going uprooting weed in people.Meanwhile, it is frequently encountered when weeding
Rain later grass on the globule and scraggly landform.Simple compact weeder is equally also required in city
To complete trimming.In view of problem in terms of economic, environmental protection, energy-conservation, the family expenses that design one economy, environmental protection, energy-conservation are integrated
Weeder is a very reliable idea.
At present, weeder mainly has two types.
(1) reciprocating weeder, by two blades, produced displacement difference carries out cutting weeding back and forth.By relying on
Moving knife and stationary knife on cutter carry out relative motion, and the cutting herbage of shearing is produced from motion.It is to cut to its feature
The process cut is relatively neat, and the careless face of cutting is smooth, while the power required for unit swath is smaller, also has the shortcoming to be exactly pair
The adaptedness of the different growth conditions of herbage is poor, easily blocks, uses flat ground environment and wider Artificial grass
.Because the amplitude of cutting is excessively big, vibrations are big, also limit speed and efficiency.
(2) rotary weeder, cutting weeding is carried out by the blade of high speed rotation.Cut by the impact in blade tray
Herbage is cut, the speed of cutting needs to reach more than 1400r/min.Work is relatively steady, and the speed of advance can reach that 15 is public
In/it is more than hour.His the characteristics of is exactly strong to careless conformability, but cuts irregular, the cutting repeated and unit swath
It is larger.Formerly enter in manufacture and belong to high-quality, efficient product, while environmental pollution is smaller again.
Field in rural area, in, crop growth environment surrounding growth many weeds, and these weed growths are in field
Between, in there is no any economy, value, the growth harvest of crops has been had a strong impact on the contrary.The weeder of in the market has
Reciprocating and rotary two class.Reciprocating weeder, is herded by the mutual shear motion cutting of moving knife on cutter and stationary knife
Grass；The bad adaptability of growth conditions different to herbage, is easily blocked；Because cutter vibrates greatly in operation, operation speed is limited
The raising of degree.Rotary weeder, by the blade impact cutting herbage on high speed rotary head；But cut not neat enough, weight
Cut more, power needed for unit swath is larger.
Prior art diesel engine is main power resources, blade is introduced directly into diesel engine rotary buckle, by starting diesel oil
Machine is cut by 1 connection blade.The device, which is drawn, with a bar carries out forward travel.
Motor driving is carried out to present weeder, to reduce the noise relative to diesel engine.Based on motor
Want power source.
Prior art shortcoming：
Diesel engine is main power resources：(1) part is difficult to produce, and the side effect that too small design is brought is exactly
Manufacture difficulty nature cost price is just improved.(2) smaller part, it is especially high to required precision, easy when assembling
There is mistake.
Whole device is driven to move by electric actuating power source, shortcoming：(1) portable power source is had to, the energy is limited；
(2) danger coefficient is than larger.
In summary, the problem of prior art is present be：The weeding acc power of in the market is smaller, bad adaptability, easily stifled
Plug, vibration is big, and cutting is irregular, cuts many again, power is larger；And not environmentally, can not save the energy, operate it is remarkable.
The content of the invention
The problem of existing for prior art, the invention provides a kind of device of novel household weeder and its design
Method.
The present invention is achieved in that a kind of design method of novel household weeder, the novel household weeder
Design includes：
(1) design of gear ratio value：
The efficiency of η gears is set as that the efficiency of 0.97, η axles is set as 0.992, and gearratio formula is：
iAlwaysThe resultant gear ratio of-whole process；
nPeople- manpower the rotational speed tentatively assumed；
nKnife- the rotational speed that finally cutter reaches；
According to formula：
(2) distribution of gear ratio value：
According to iAlwaysSpan set transmission series as 3 grades；
Therefore：
iAlways=iTooth 3；
According to above formula, iTooth=0.26；
3) design of the gearratio of axle：
I axle iTooth I=0.26；
II axle iTooth II=0.26；
III axle iTooth III=0.26；
To the power calculation r/mi of each axle：
nHand=25r/min；
I axle
II axle
III axle
Calculating to each shaft power：
III III=P of axle P knives=800w；
II axle
I axle
Calculating to each shaft torque：
III III=T of axle TKnifex iTooth IIIX η gears=5.371x0.26x0.97=1.354Nmm；
The x i of II II=T of axle T IIITooth IIX η gear x η axles
=1.354x0.26x0.97x0.992=0.338Nmm；
The x i of I I=T of axle T IITooth IX η gear x η axles
=0.338x0.26x0.97x0.992=0.085Nmm；
4) design of gear：
According to the i of primary electionTooth=0.26, little gear number of teeth Z1=30 is taken, is obtained：
Solve：Gear wheel tooth number Z 2=115；
Designed by contact strength of tooth surface
Wherein, Kt=1.4；Ha=1；C=0.25；ZH=2.467；εα=1.765；[σ H]=
613.275MPa；
Bring formula into
Calculate facewidth B；
Centre-to-centre spacing a, takes m=2；
d1=Z1M=30X2=60mm；
d2=Z2M=115X2=230mm
da1=d1+ 2Ham=60+2X1X2=64mm；
Because da1≤ 160mm, so gear uses solid construction；
da2=d2+ 2Ham=230+2X1X2=234mm；
Because 160mm≤da2≤ 300mm, so gear uses web-type；
df1=d1- 2 (Ha+C) m=60-2X (1+0.25) X 2=55mm；
df2=d2- 2 (Ha+C) m=230-2X (1+0.25) X 2=225mm；
db1=d1Cos (B)=56.38mm；
db2=d2Cos (B)=216.13mm.
Further, the little gear includes the second angular wheel, passive spur gear；The gear wheel includes the first taper
Gear, active spur gear.
Another object of the present invention is to provide a kind of device of novel household weeder, the novel household weeder
Device is provided with rocking bar；The rocking bar is socketed in one end of I axle；The other end of I axle is socketed with the first angular wheel；Institute
State the first angular wheel and be engaged with the second angular wheel；Second angular wheel is connected with active spur gear by II axle；Institute
State active spur gear and be engaged with passive spur gear；The passive spur gear is connected with blade by III axle.
Further, first angular wheel, the second angular wheel, active spur gear, passive spur gear use 45 steel；
Rocking bar uses rigid plastics.
Further, the bottom of the device of the novel household weeder has been bolted roller.
Advantages of the present invention and good effect are：The family expenses hay mover is cut in modern design using human arm power running
Careless machine, rather than apply to expendable power set, formerly enter manufacture view and belong to high-quality, efficient, zero consumption, clean type product.
The characteristic and innovation of this design are to use human arm power running weeder, rather than apply to consumption
Property power set, formerly enter manufacture view belong to high-quality, efficiently, zero consumption, clean type product.Its advantage be operating efficiency compared with
High (compared to hoe, reaping hook), is fabricated by using plastics and common iron, with low cost, is easy to carry, economic and practical, is regardless of
The failure problems without expectation that mud is brought in other mowing power plants.
The present invention preferably can be in people to be done it yourself to carry out healthy weeding, and letter has also been obtained while weeding
Single motion exercise.The present invention has all well and good effect to air environmental protection, substantially reduce the number without diesel oil equal energy source is used
There are the discharge for going back gas and the discharge of carbon dioxide, there is critically important help to greenhouse effects.Decrease simultaneously to limited
The utilization of resource, is a kind of efficient power save mode, needs the improvement of new energy today that the energy lacks.The present invention is necessary
The discharge of noise is reduced, vital effect is played to environment.
Of the invention main by manpower drive gear drive, gear drive includes angular wheel and spur gear, final to drive
The machine components of blade movement, the design of assembling.The main parameter to gear calculates, and is Pro/ to one
The practice of Engineer5.0 software.It is driven to reduce the pollution to environment by novel manpower driving mechanical, arranges
Except a large amount of discharge toxic gases of diesel engine are protected to environment, taking exercises for health is virtually brought, while being also pair
The protection of the energy plays vital effect.
Brief description of the drawings
Fig. 1 is the schematic device of novel household weeder provided in an embodiment of the present invention.
Fig. 2 is rocking bar graphics provided in an embodiment of the present invention.
In figure：1st, rocking bar；2nd, I axle；3rd, the first angular wheel；4th, the second angular wheel；5th, II axle；6th, active spur gear；
7th, passive spur gear；8th, III axle；9th, blade.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to this hair
It is bright to be further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
The problem of prior art is present be：The weeding acc power of in the market is smaller, bad adaptability, easily blocks, and vibration is big,
Cutting is irregular, cuts many again, power is larger；And not environmentally, can not save the energy, operate it is remarkable.
Below in conjunction with the accompanying drawings and specific embodiment to the present invention application principle make in detail step describe.
As depicted in figs. 1 and 2, the device of novel household weeder provided in an embodiment of the present invention, including：It is provided with and shakes
Bar 1；The rocking bar is socketed in one end of I axle 2；The other end of I axle is socketed with the first angular wheel 3；First taper
Gear 3 is engaged with the second angular wheel 4；Second angular wheel 4 is connected with active spur gear 6 by II axle 5；The master
Dynamic spur gear 6 is engaged with passive spur gear 7；The passive spur gear is connected with blade 9 by III axle 8.
First angular wheel, the second angular wheel, active spur gear, passive spur gear use 45 steel；Rocking bar is used
Rigid plastics.
The bottom of the device of the novel household weeder has been bolted roller.
The device of described novel household weeder also includes the axle IV and the axle V of angular wheel of gear and blade.(figure
Not shown in).
The present invention is described further with reference to operation principle.
The present invention drives rocking bar come band moving gear by manpower, so that high-speed rotation is carried out with cutting blade, with rotary side
Formula is mowed, and environmental protection but also can be taken exercises not only, meanwhile, also save the energy, but material requirements is strict, it is impossible to it is overweight but
Can not be too light, the present invention uses 45 steel by gear, and handle uses rigid plastics, is rolled using wheel and drives whole device fortune
It is dynamic.Manpower is main power resources, contemplates manpower family expenses weeder schematic diagram to motion process schematic diagram, as shown in Figure 1.
Drive angular wheel to be rotated by using manual operation rocking bar, next taper is driven by angular wheel
Gear, is sent to driving gear and is sent to driven gear again, by driven gear band cutting blade, and the drive of one-level one-level is gone down,
Final band cutting blade is rotated.
The family expenses hay mover of the present invention using human arm power running hay mover, rather than applies to disappear in modern design
Consumption power set, formerly enter manufacture view and belong to high-quality, efficient, zero consumption, clean type product.
The characteristic and innovation of this design are to use human arm power running weeder, rather than apply to consumption
Property power set, formerly enter manufacture view belong to high-quality, efficiently, zero consumption, clean type product.Its advantage be operating efficiency compared with
High (compared to hoe, reaping hook), is fabricated by using plastics and common iron, with low cost, is easy to carry, economic and practical, is regardless of
The failure problems without expectation that mud is brought in other mowing power plants.
The parameter to gear of the invention main is calculated, and the software to a Pro/Engineer5.0 actual fortune
With.It is driven to reduce the pollution to environment by novel manpower driving mechanical, excludes a large amount of discharge toxic gases of diesel engine
Environment is protected, taking exercises for health is virtually brought, while being also that protection to the energy plays vital work
With.
With reference to the design principle of each structure, the invention will be further described.
Novel household weeder design method provided in an embodiment of the present invention is, it is necessary to which the part of design has rocking bar, straight-tooth
Wheel, angular wheel, axle, the selection of blade.
1. can be assembled between each part, numerical value, reasonable set numerical value must be just calculated.
The design of 1.1 rocking bars, as shown in Fig. 2
Rocking bar is, by manpower swinging handle, can be moved around next axle.
Axis hole is 15mm, axle outer ring 25mm, handle positioning 10mm, and angle is 94.41 degree, according to the size of general human hand,
Preliminary handle length is set to 100mm, the whole high 55mm of moving parts.
The design of 1.2 gears
The characteristics of gear drive possesses numerous, wherein having：
(1) efficiency is relatively high, and by being compared to conventional machinery transmission, gear-driven efficiency is highest,
Up to 99%.
(2) the relatively reliable, service life that works is high, and general can reach 10 years to 20 years.
(3) gearratio is stable, it is not easy to mistake occur.
(4) structure is very close.
The design of 1.3 gear ratio values
The efficiency of η gear gears is set as that the efficiency of 0.97, η axle axles is set as 0.992, and according to the data of lookup, family expenses are removed
Scope power output 500w to 800w between 1400r/min to 1600r/min of careless machine knife blade rotating speed power just can be right
Grass is cut, and people's strength can typically reach 25r/min, then：
iAlwaysThe resultant gear ratio of-whole process；
nPeople- manpower the rotational speed tentatively assumed；
nKnife- the rotational speed that finally cutter reaches；
According to formula：
The distribution of 1.4 gear ratio values：
According to iAlwaysSpan initial setting be transmission series be 3 grades；
Therefore：
iAlways=iTooth 3；
According to above formula, i tooth=0.26 (value about)
The calculating of 1.5 kinematic parameters：
Design to the gearratio of each axle：
I axle iTooth I=0.26；
II axle iTooth II=0.26；
III axle iTooth III=0.26；
To the power calculation (r/mi) of each axle：
N hands=25r/min；
I axle
II axle
III axle
Calculating (w) to each shaft power：
III III=P of axle P knives=800w
II axle
I axle
Calculating (Nmm) to each shaft torque：
The x η gears of III axle T III=T knife x i teeth III=5.371x0.26x0.97=1.354Nmm
The x η gear x η axles of II II=T of axle T, III x i teeth II
=1.354x0.26x0.97x0.992=0.338Nmm
The x η gear x η axles of I I=T of axle T, II x i teeth I
=0.338x0.26x0.97x0.992=0.085Nmm.
Calculating more than, calculates and observes, form is counted into such as, shown in table 1 for convenience.
| I axle | II axle | III axle | |
| Gearratio i | 0.26 | 0.26 | 0.26 |
| Rotating speed (r/min) | 96.15384 | 369.8224 | 1422.3941 |
| Power (w) | 740.724 | 769.792 | 800 |
| Torque (Nmm) | 0.085 | 0.338 | 1.354 |
The related data of the gear shaft of table 1
The master data of 1.6 gears：
According to i tooth=0.26 of above primary election, little gear number of teeth Z1=30 is removed, is obtained：
Solve：
Z2=115；
Designed by contact strength of tooth surface
Consult reference materials Kt=1.4；Ha=1；C=0.25
ZH=2.467；
ε is checked in by figureα=1.765
[σ H]=613.275MPa
Bring formula into
Calculate facewidth B；
Centre-to-centre spacing a, takes m=2；
d1=Z1M=30X2=60mm
d2=Z2M=115X2=230mm
da1=d1+ 2Ham=60+2X1X2=64mm
Because da1≤ 160mm, so using solid construction.
da2=d2+ 2Ham=230+2X1X2=234mm
Because 160mm≤da2≤ 300mm, so using web-type.
df1=d1- 2 (Ha+C) m=60-2X (1+0.25) X2=55mm
df2=d2- 2 (Ha+C) m=230-2X (1+0.25) X2=225mm
db1=d1Cos (B)=56.38mm
db2=d2Cos (B)=216.13mm
1.7 draw gear using Pro/E
By in above parameter and Formula Input Technology Pro/E；Parameter and relational expression are imported, is to allow made part out to have
There is parametrization, more favourable and conveniently to part modification can be used.It has been imported that, part has been painted；
Plot step：(1) grass is first carried out to outside circle, basic circle, root circle to paint and change over parameter to it, then draw
" tooth ", using the drafting mode of involute.
(2) involute is drawn by " from equation " Descartes's formula.
Descartes's formula：
Theta=t90
X=r*cos (theta)+r*sin (theta) * theta*pi/180
Y=r*sin (theta)-r*cos (theta) * theta*pi/180
Z=0
(3) and then " datum mark " is set, face is by datum mark " mirror image " into another involute；Ordered by " stretching "
" use " tooth top round wires are made, a generation facewidth B=20mm cylinder, is " 45 X D " to cylinder water chestnut side progress " chamfering "
" D=0.5 " chamfering.
(4) two involutes are carried out with the position that " stretching " is engaged into " tooth "." matrix " is carried out to it and obtains little gear.
Big little gear method for drafting is the same.Big little gear is drawn out respectively.
The drafting of 1.8 angular wheels
Angular wheel only with view of the speed of vertical direction is sent into horizontal direction, is carried out using existing data
Drafting can just be completed.
The preceding setting for carrying out angular wheel parameter is drawn such as, shown in table 2.
The Pre/E angular wheel parameter lists of table 2
With angular wheel relation：
HA=(HAX+X) * M
HF=(HAX+CX-X) * M
H=(2*HAX+CX) * M
DELTA=ATAN (Z/ZD)
D=M*Z
DB=D*cos (ALPHA)
DA=D+2*HA*cos (DELTA)
DF=D-2*HF*cos (DELTA)
DDA=(DA/2) * cos (DELTA)
DD=(D/2) * cos (DELTA)
DDF=(DF/2) * cos (DELTA)
DDB=(DB/2) * cos (DELTA)
D1=DDA
D2=DDB
D3=DD
D6=DDF
D12=DB
D13=D
D14=DF
D24=B
D25=0.8*H
D26=H.
The approximate shape of angular wheel is rotated into, and is drawn " tooth " with " scanning ".Ultimately generate angular wheel.
1.9 shaft design
The present invention depicts 5 axles, in addition to three axles more than.It with the addition of the axle IV of gear and blade, angular wheel
Axle V.The bore dia of alignment pin is 5mm, and bearing diameter is 10mm, and gear wheel internal diameter is 42mm, and little gear is 15mm.
The design of 1.10 other parts
The a diameter of 5mm of alignment pin elongated cylinder.
Make step description to the present invention with reference to the selection of material.
2nd, the selection of gear material
Transmission power in view of family expenses weeder is simultaneously little, can be found according to textbook MSDS, and little gear is from hard
Matter plastics are processed.Gear wheel then selects 45 steel, using normalizing, 225HBS tooth face hardness.Choosing can be learnt by tabling look-up
7 class precisions.Ra≤1.6~3.2 μm are tooth-face roughness.
3rd, the selection of shaft material
Single-stage speed increaser is that this major design typically enters axle, from 45 steel and carries out normalizing, 170~217HBS
Hardness, σ b=590Mpa be its tensile strength, σ -1=255Mpa bending fatigue strength.
4th, the characteristics of Pro/E
It is main that product is entered to design and assembled using Pro/Engineer5.0.
Pro/Engineer5.0 is the three-dimensional of the CAD/CAM/CAE integrations under U.S. parameters technology company (PTC)
Software, he is famous with parameter, is the earliest application person of parametric technology.Pro/Engineer5.0 be now untill it is most advanced
One of drawing software, and greatly developed, be the CAD/CAM/CAE of main flow now.
Particularly product design field is that have main position at home.By Pro/Engineer5.0, the present invention is also
The mark part storehouse that can be carried using system itself, be can direct production and application utility, it includes often having in machinery
Conventional parts such as key, bolt, sealing ring, spring, screw, stud, pin, packing ring, back-up ring, section bar, nut, flange etc..
Pro/Engineer4.0 can not have been used now, with respect to Pro/Engineer4.0, Pre/Engineer5.0
Comparatively perfect and practicality, the article that can commercially see can be drawn by Pro/Engineer5.0, profit
Printing is can be carried out with 3D, is produced.Dimensional parameters and formula can be modified change part size and some
The Element Design that the mankind itself that parametric equation is drawn can not complete, is greatly reduced the cost of a part.
Simultaneously can be by equipping come with regard to performing check and modification parameter.By Pro/Engineer5.0 to having assembled
Product enter computer draw engineering drawing, be introduced directly into, it is not necessary to which each chi is redesigned, the article of importing is direct
Just have the size designed originally, it is very convenient, it is only necessary to it is in need be sized at display just can be with.The engineering of generation
Figure directly can be carried out printing.
Therefore, the family expenses weeder, convenient design and making are done in present invention selection using Pro/Engineer5.0.It is main
The design of part, design parameter and relational expression are carried out by stretching, rotation order, gear etc. can use parameter equation equation
To design.
The present invention is described further with reference to the assembling process of typical part.
1) assembling process of gear engagement
Step has several：
(1) one " axis " is created between two faces；
(2) first gear will be put into, the axle of part will be alignd with " pin " on the axle of first step establishment, then carry out tooth
On the face of wheel side alignment software, it is determined that；
(3) one new " axis " is created on the basis of the axle that the first step is created again, distance is 144.5mm；
(4) another gear with the same step pin of second step on the axle of the 3rd step, and is pinned again
Two parts are moved to the position of engagement by " Ctrl "+" Alt "；
(5) click on after menu bar " application program "-" mechanism ", " gear " key is found, respectively by the direction of motion of two gears
Click and enter, then input base circle diameter (BCD) 55mm and 255mm.
It can just be operated by above step, gear engagement.
2) assembling process of angular wheel engagement
The installation step of angular wheel engagement is similar with gear assembling.
3) motion simulation
The gear drive of three-level is driven by using rocking bar, final band cutting blade is cut.From hand 25r/min
To the 1400r/min of last blade.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (5)
1. a kind of design method of novel household weeder, it is characterised in that the design of the novel household weeder includes：
(1) design of gear ratio value：
The efficiency of η gears is set as that the efficiency of 0.97, η axles is set as 0.992, and gearratio formula is：
iAlwaysThe resultant gear ratio of-whole process；
nPeople- manpower the rotational speed tentatively assumed；
nKnife- the rotational speed that finally cutter reaches；
According to formula：
(2) distribution of gear ratio value：
According to iAlwaysSpan set transmission series as 3 grades；
Therefore：
iAlways=iTooth 3；
According to above formula, iTooth=0.26；
3) design of the gearratio of axle：
I axle iTooth I=0.26；
II axle iTooth II=0.26；
III axle iTooth III=0.26；
To the power calculation r/mi of each axle：
nHand=25r/min；
Calculating to each shaft power：
III III=P of axle P knives=800w；
Calculating to each shaft torque：
III III=T of axle TKnifex iTooth IIIX η gears=5.371x0.26x0.97=1.354Nmm；
The x i of II II=T of axle T IIITooth IIX η gear x η axles
=1.354x0.26x0.97x0.992=0.338Nmm；
The x i of I I=T of axle T IITooth IX η gear x η axles
=0.338x0.26x0.97x0.992=0.085Nmm；
4) design of gear：
According to the i of primary electionTooth=0.26, little gear number of teeth Z1=30 is taken, is obtained：
Solve：Gear wheel tooth number Z 2=115；
Designed by contact strength of tooth surface
Wherein, Kt=1.4；Ha=1；C=0.25；ZH=2.467；εα=1.765；[σ H]=613.275MPa；
Bring formula into
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Centre-to-centre spacing a, takes m=2；
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<msub>
<mi>Z</mi>
<mn>1</mn>
</msub>
<mo>+</mo>
<msub>
<mi>Z</mi>
<mn>2</mn>
</msub>
<mo>)</mo>
<mo>&CenterDot;</mo>
<mi>m</mi>
</mrow>
<mn>2</mn>
</mfrac>
<mo>=</mo>
<mn>144.5</mn>
<mi>m</mi>
<mi>m</mi>
<mo>;</mo>
</mrow>
d1=Z1M=30X 2=60mm；
d2=Z2M=115X 2=230mm
da1=d1+ 2Ham=60+2X 1X 2=64mm；
Because da1≤ 160mm, so gear uses solid construction；
da2=d2+ 2Ham=230+2X 1X 2=234mm；
Because 160mm≤da2≤ 300mm, so gear uses web-type；
df1=d1- 2 (Ha+C) m=60-2X (1+0.25) X 2=55mm；
df2=d2- 2 (Ha+C) m=230-2X (1+0.25) X 2=225mm；
db1=d1Cos (B)=56.38mm；
db2=d2Cos (B)=216.13mm.
2. the wheel design method of novel household weeder as claimed in claim 1, it is characterised in that the little gear includes second
Angular wheel, passive spur gear；The gear wheel includes the first angular wheel, active spur gear.
3. a kind of wheel design method of novel household weeder as claimed in claim 1 designs the novel household weeder of spur gear
Device, it is characterised in that the device of the novel household weeder is provided with rocking bar；The rocking bar is socketed in one end of I axle；
The other end of I axle is socketed with the first angular wheel；First angular wheel is engaged with the second angular wheel；Described second
Angular wheel is connected with active spur gear by II axle；The active spur gear is engaged with passive spur gear；The passive straight-tooth
Wheel is connected with blade by III axle.
4. the device of novel household weeder as claimed in claim 3, it is characterised in that first angular wheel, second
Angular wheel, active spur gear, passive spur gear use 45 steel；Rocking bar uses rigid plastics.
5. the device of novel household weeder as claimed in claim 3, it is characterised in that the dress of the novel household weeder
The bottom put has been bolted roller.
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| CN201710474321.9A CN107124963A (en) | 2017-06-21 | 2017-06-21 | The device and its design method of a kind of novel household weeder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108121883A (en) * | 2018-01-12 | 2018-06-05 | 中南民族大学 | The analogy method and device of airborne particulate cutter performance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1243945A (en) * | 1969-06-26 | 1971-08-25 | Deere & Co | A change-speed gearbox, for agricultural vehicles |
| CN87201444U (en) * | 1987-03-31 | 1987-12-31 | 农东宝 | Hand-driven abdomen pushing wheat harvester |
| CN102870544A (en) * | 2012-09-27 | 2013-01-16 | 张恩泽 | Mower |
| CN104429308A (en) * | 2013-09-25 | 2015-03-25 | 陕西山泽农业科技有限公司 | Improved man-powered lawn trimmer |
| CN204994250U (en) * | 2015-09-17 | 2016-01-27 | 武昌工学院 | Environmental protection hand propelled lawnmower |
-
2017
- 2017-06-21 CN CN201710474321.9A patent/CN107124963A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1243945A (en) * | 1969-06-26 | 1971-08-25 | Deere & Co | A change-speed gearbox, for agricultural vehicles |
| CN87201444U (en) * | 1987-03-31 | 1987-12-31 | 农东宝 | Hand-driven abdomen pushing wheat harvester |
| CN102870544A (en) * | 2012-09-27 | 2013-01-16 | 张恩泽 | Mower |
| CN104429308A (en) * | 2013-09-25 | 2015-03-25 | 陕西山泽农业科技有限公司 | Improved man-powered lawn trimmer |
| CN204994250U (en) * | 2015-09-17 | 2016-01-27 | 武昌工学院 | Environmental protection hand propelled lawnmower |
Non-Patent Citations (1)
| Title |
|---|
| 于晓文: "《机械设计课程设计》", 31 January 2011, 中国计量出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108121883A (en) * | 2018-01-12 | 2018-06-05 | 中南民族大学 | The analogy method and device of airborne particulate cutter performance |
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