CN208940384U - A kind of pneumatic grass trimmer - Google Patents
A kind of pneumatic grass trimmer Download PDFInfo
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- CN208940384U CN208940384U CN201821336913.0U CN201821336913U CN208940384U CN 208940384 U CN208940384 U CN 208940384U CN 201821336913 U CN201821336913 U CN 201821336913U CN 208940384 U CN208940384 U CN 208940384U
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Abstract
The utility model discloses a kind of pneumatic grass trimmer, and by the way that aerodynamic device is connected to cutter device, structure is simple, and torque is big, and revolving speed is high, and transmission efficiency is high, and low energy consumption, and environmental-friendly, and emission is the gas after decompression, and operating noise is low, and emission-free pollution.The aerodynamic device that the pneumatic grass trimmer uses, including outer ring and core, the secondary swash of wave road of at least single order or more is equipped between the spout and row's mouth of the outer ring surface of core, gas enters from inlet channel, by the ejection stepwise of the spout and secondary swash of wave road of core, acts at least two driving recess portions in the circumferential direction of outer ring, thrust is generated to these driving recess portions and pushes outer ring rotation acting, power output is realized, finally, gas is discharged by the row mouthful of core through exhaust passage.
Description
Technical field
The utility model discloses a kind of pneumatic grass trimmer, belongs to gardens agricultural by International Patent Classification (IPC) (IPC) division and uses
Mechanical device class technical field.
Background technique
During the lawn maintenance of gardens agricultural, grass trimmer is necessary equipment, and grass trimmer can be divided into according to operation mode:
Powerless hand push formula, hand-held, sitting type and direct-connected mower；Wherein, it in the maintenance on large area lawn, is mostly used dynamic
Walk-behind greensmower or sitting type grass trimmer.
Wherein, to provide driving power to grass trimmer, existing grass trimmer polygamy has gasoline engine, cuts compared to new energy
Careless machine, gasoline engine have many advantages, such as compact-sized, high efficient and reliable, it is more difficult to substitute.
But petrol engine maintenance is complicated: mostly related to vapour, oil, electricity such as starting difficulty.Firstly, whether fiery to consider
The spark discharge effect of Hua Sai is not ideal enough, if it is the case, to be then adjusted to the gap of spark plug, or changes
New spark plug；It, be to hair the reason of if it is this respect secondly, to consider whether igniting caused by magneto is incorrect
Motivation is readjusted；Finally, whether to consider due to using substandard gasoline or gasoline not pure etc. enough
The reason of causing engine start difficulty etc., if belonging to such case, gasoline is replaced.Except this it
Outside, it is also contemplated that being since the filter of air blocks, caused air inlet is difficult, if it were to be so, wanting
Air cleaner is cleaned.
Meanwhile with the rapid development of economy, the improvement of people's living standards, requirement of the people to environment is also increasingly
Height, and the grass trimmer of gasoline engine power during lawn maintenance there is biggish engine noise and motor exhaust to pollute.
Therefore, it is badly in need of providing that a kind of environmental pollution is small and compact-sized, grass trimmer of high efficient and reliable.
Summary of the invention
In view of the deficiencies of the prior art, the utility model provides a kind of pneumatic grass trimmer, by by aerodynamic device
As the power device of grass trimmer, the multistage runner being circumferentially arranged on the aerodynamic device core, the energy of gas is repeatedly sharp
With, by core drive rotation outer ring, realize the output of power；The pneumatic grass trimmer is with compact-sized, torque is big, revolving speed
The advantages that height, transmission efficiency height, energy conservation and environmental protection.
In order to achieve the above objectives, the utility model is achieved through the following technical solutions:
A kind of pneumatic grass trimmer, including a rack, the rack are equipped with cutter device and power device, the power device
It is drivingly connected with the cutter device；The power device is aerodynamic device comprising:
One outer ring, inner ring surface circumferential direction are equipped with multiple driving recess portions；
One core, be co-axially located in outer ring and can opposite outer ring rotating, the outer ring surface of core be equipped with an at least spout,
An at least row mouthful and the swash of wave road at least once between spout and row's mouth；
An at least inlet channel is connected to an at least spout；And
An at least exhaust passage, a connection at least row mouthful；
Gas enters from inlet channel, by the ejection stepwise of the spout and secondary swash of wave road of core, acts on outer ring circumferential direction
On at least two driving recess portions, to these driving recess portions generate thrusts push outer rings rotation acting, realize power output, finally,
Gas is discharged by the row mouthful of core through exhaust passage.
Further, an at least inlet channel, at least a spout, at least two driving recess portion, at least once swash of wave roads, at least one
Row's mouth and an at least exhaust passage form independent acting unit, include at least one list that independently does work in the aerodynamic device
Member.
Further, the spout on core and secondary swash of wave road, the connection of corresponding with outer ring driving recess portion, secondary swash of wave road with it is corresponding
Driving recess portion be laid staggeredly and be sequentially communicated, secondary swash of wave road is circumferentially arranged along core or outer ring.
Further, inlet channel and exhaust passage are formed in core.
Further, include: on core
Inlet channel forms spout in core circumferential surface, and trend is by the curved line that extends outward of centre, spout and outer
Corresponding driving recess portion connection is enclosed, the 1st rank runner is formed；
Secondary swash of wave road, trend be core edge inwardly arrive the curved line that edge bends extension again, each time swash of wave road and
The corresponding front and back two in outer ring drives recess portion connection, circumferentially forms N rank runner along core, wherein the natural number of N >=2；
Each rank runner driving recesses fit corresponding with outer ring forms the multistage stroke structure that gas energy successively decreases.
Further, secondary swash of wave road includes return run and the stroke road that communicates, return run driving recess portion company corresponding with outer ring
Logical, stroke road is connected to another driving recess portion.
Further, the trend of core inlet channel is the log spiral extended outward by centre, the log spiral
In the core on mandrel line, log spiral moves towards 15 ° -45 ° of angle for pole setting.
Further, core is equipped with inlet channel, and trend is by the intermediate log spiral extended outward, secondary swash of wave road
The trend in stroke road be log spiral, the trend of the stroke road log spiral in secondary swash of wave road and inlet channel logarithmic spiral
Moving towards for line is roughly the same.
Further, which further includes an axis, and outer ring and core are coaxially disposed on axis.
Further, which further includes an axis, and outer ring and core are coaxially disposed on axis, offer on the axis
Inlet, outlet axle track is respectively communicated to the inlet channel and exhaust passage of core.
Inlet, outlet axle track forms air inlet and air outlet in axis, and inlet, outlet axle track is not connectivity structure.
Further, outer ring is matched with one enclosure space of formation, core on axis by side plate and is set in enclosure space simultaneously
It is fixed with axis connection.
Further, inlet channel, spout, driving recess portion, secondary swash of wave road, row's mouth and exhaust passage structure in independent acting unit
At gas flow paths.
It further, include that two or more the units that independently do work form multiple drive power structure, and edge in the aerodynamic device
Core or outer ring are circumferentially arranged.
Further, it is provided with 2 or more on the inner ring surface of outer ring and drives recess portion, each driving recess portion has a profile bottom surface
And drive surface, the contour line of profile bottom surface are log spiral, the heart in the core is arranged in pole.
Further, a storage tank for supplying to the aerodynamic device is additionally provided in the rack；The storage tank passes through valve
Body component pipeline is connected to the inlet channel.
It further, further include the first and second transmission devices, the outer ring of the aerodynamic device first is driven by this
Device and the cutter device are sequentially connected；
It is additionally provided with running gear in the rack, the outer ring of the aerodynamic device and the running gear second are driven by this
Device transmission connection.
The pneumatic grass trimmer of the utility model, by the way that aerodynamic device is connected to cutter device, structure is simple, torque
Greatly, revolving speed is high, and transmission efficiency is high, and low energy consumption, and environmental-friendly, and emission is the gas after decompression, and operating noise is low, and anury
Gas pollution.
The aerodynamic device of the utility model, also has the following beneficial effects:
1, the multistage runner that core is arranged in the utility model, i.e. inlet channel are made as the 1st rank runner, each secondary swash of wave road
For the 2nd, 3,4 ... rank runners, gas is acted on the driving recess portion of outer ring by the 1st rank runner, drives recess portion and the 2nd rank runner phase
It is logical, another driving recess portion of outer ring is then returned to after the 2nd rank runner and acts on, precedence is analogized, until gas is logical from exhaust
Road discharge, whole process is the forward progress along outer ring direction of rotation, and torque is big, and transmission efficiency is high, gas effciency is high, output
Torque is further increased with the raising of revolving speed；Efficiently modified to lawn for driving cutter device.
2, each runner that the utility model core is circumferentially laid, effectively reduces the volume of single unit system, can be matched with and cut
The running gear output power of careless machine, meanwhile, the enterprising flow channel setting of core is more, and overall weight reduces instead, further mentions
The high output speed and efficiency of device.
Detailed description of the invention
_ _ Fig. 1 shows pneumatic one structural schematic diagram of grass trimmer angle of the 1st embodiment of the utility model；
_ _ Fig. 2 shows pneumatic two structural schematic diagrams of grass trimmer angle of the 1st embodiment of the utility model；
Fig. 3 is the aerodynamic device schematic diagram of the 1st embodiment of the utility model.
Fig. 4 is the 1st embodiment aerodynamic device axis A of the utility model to side view.
Fig. 5 is the 1st embodiment aerodynamic device axis B of the utility model to side view.
Fig. 6 is the 1st embodiment aerodynamic device radial cross-section of the utility model.
Fig. 7 is the 1st another layout of embodiment aerodynamic device of the utility model.
Fig. 8 is the aerodynamic device schematic diagram of the 2nd pneumatic grass trimmer of embodiment of the utility model.
Fig. 9 is the 2nd embodiment aerodynamic device axis C of the utility model to side view.
Figure 10 is the 2nd embodiment aerodynamic device axis D of the utility model to side view.
Figure 11 is the 2nd embodiment aerodynamic device radial cross-section of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
Embodiment 1:
Referring to figs. 1 and 2, this embodiment offers a kind of pneumatic grass trimmers, further, mow for sitting type
Machine a comprising rack 5, the following above and of the rack 5 are separately installed with cutter device 6 and power device 9, power dress
The output unit and the cutter device 6 for setting 9 are drivingly connected, for providing cutting power.
In this embodiment, which is respectively provided with a running gear, it is preferred that the front end of rack 5 is equipped with band
There is the steering running gear of steering wheel, the rear end of rack 5 is equipped with the driving running gear 7 with differential mechanism；Wherein, which fills
It sets 9 to be sequentially connected by the rotating blade of the first belt pulley set 91 and cutter device 6 as the first transmission device, power dress
9 are set also to be sequentially connected by the second belt pulley set 92 as the second transmission device with the driving running gear 7.
In this embodiment, which is that aerodynamic device is further additionally provided with one in the rack 5 and is used for
To the storage tank 8 of the aerodynamic device 9 gas supply；The storage tank passes through valve component pipeline connection to the aerodynamic device 9；The storage
Tank 8 is preferred, is high pressure tank, Dewar tank or storage cylinder.
Fig. 3 to Fig. 6 is please referred to, the aerodynamic device comprising an outer ring 1, inner ring surface circumferential direction are equipped with multiple drives
Dynamic recess portion 11；One core 3 is co-axially located in outer ring 1 and outer ring rotating, the outer ring surface of core 3 can be equipped at least one relatively
Spout 301, an at least row mouthful 302 and the road of the swash of wave at least once 300 between spout and row's mouth；
An at least inlet channel 31 is connected to an at least spout 301；And
An at least exhaust passage 310, a connection at least row mouthful 302；
The compressed gas of storage tank 8 enters from inlet channel 31, stepwise by the spout 301 of core 3 and secondary swash of wave road 300
It sprays, acts at least two driving recess portions 11 in 1 circumferential direction of outer ring, thrust is generated to these driving recess portions 11, outer ring 1 is pushed to revolve
Turn acting, realize that power continuously exports, finally, gas is discharged by the row mouthful of core 3 through exhaust passage.The aerodynamic device
It further include an axis 2, outer ring 1 and core 3 are coaxially disposed on axis 2.
As shown in fig. 6, inlet channel 31 and exhaust passage 310 are formed in core 3, spout 301 and secondary punching on core 3
Runner 300, driving recess portion 11 corresponding with outer ring 1 is connected to, wherein secondary swash of wave road 300 is laid staggeredly with corresponding driving recess portion 11
It is sequentially communicated, secondary swash of wave road 300 is circumferentially arranged along core or outer ring.
Include: inlet channel 31 on core 3 such as Fig. 6, form spout 31 in core circumferential surface, trend for from it is intermediate toward
The curved line of outer extension, the driving recess portion 11 corresponding with outer ring of spout 301 are connected to, and form the 1st rank runner；
Secondary swash of wave road 300, trend are that 3 edge of core inwardly arrives the curved line that edge bends extension again, each time the swash of wave
The front and back two corresponding with outer ring 1 of road 300 drives recess portion 11 to be connected to, and circumferentially forms N rank runner along core, wherein the nature of N >=2
Number.It should be understood that then including here the 1st rank runner (inlet channel) and (the primary punching of the 2nd rank runner if it is 2 rank runners
Runner)；It is (another including the 1st rank runner (inlet channel), the 2nd rank runner (swash of wave road), the 3rd rank runner if it is 3 rank runners
Swash of wave road) ... ...
Each rank runner driving recesses fit corresponding with outer ring forms the multistage stroke structure that gas energy successively decreases.
According to the requirement of load, aerodynamic device can be designed, the setting of core 3 therein can be 2 ranks stream
Road, 3 rank runners, or more rank air inlet runner, every rank circular work, energy make full use of, farthest improve service efficiency,
The needs of to meet output torque and revolving speed.
If Fig. 7 is 4 rank runner schematic diagrames, compressed gas after the entrance of the 1st rank runner 311, through the 2nd, 3,4 rank runners 312,
313,314, and spray and act on corresponding driving recess portion 11, last body is exported by grate flow channel 310；Fig. 6 is 5 rank inlet air flows
Road schematic diagram, the course of work are illustrated similar with Fig. 7.Such as Fig. 7, secondary swash of wave road 300 includes return run and the stroke road communicated, such as schemes
Return run 3131 in the 3rd rank runner in 7 and the stroke road 3132 communicated, the driving recess portion corresponding with outer ring of return run 3131
Connection, stroke road 3132 is connected to another driving recess portion.
Referring to Fig. 3, the aerodynamic device further includes an axis 2, outer ring 1 and core 3 are coaxially disposed on axis 2, the axis 2
On offer inlet channel 31 and exhaust passage 310 that inlet, outlet axle track 21,210 is respectively communicated to core 3.Inlet, outlet in axis
Axle track forms inlet and outlet, and inlet, outlet axle track is not connectivity structure.Outer ring 1 is matched on axis 2 by side plate 41,42 and is formed
One enclosure space, core 3 are set in enclosure space and are connected and fixed with axis 2.Core 3 is equipped at least 2 in the utility model
Rank runner, every single order runner driving recess portion connection corresponding with outer ring, is finally discharged gas by grate flow channel.
Referring to Fig. 3, core 3 can be and form with left and right core in the utility model, left and right core mating surface
Equipped with inlet channel 31 and exhaust passage 310, core 3 is also possible to be integrally cast.
Fig. 3, Fig. 6 are please referred to, the present embodiment is level-one driving structure, and circumferentially arranged 1 air duct is formed on core 3
Level-one driving structure, air duct are also referred to as independent acting unit, an inlet channel 31 on core 3 and outer ring 1, a spout 301,
At least two driving recess portions 11, at least once swash of wave road 300, a row mouthful 302 and an exhaust passage 310 form independent acting unit,
It include at least one unit that independently does work in the aerodynamic device.Inlet channel 31, spout 301, drive in independent acting unit
Dynamic recess portion 11, secondary swash of wave road 300, row's mouth 302 and exhaust passage 310 constitute gas flow paths.
Fig. 3, Fig. 6 or Fig. 7 are please referred to, 2 or more is provided on the inner ring surface of outer ring 1 in the utility model and drives recess portion
11, each driving recess portion has a profile bottom surface 111 and drive surface 112, and the contour line of profile bottom surface 111 can be common arc
Shape line or helix, when the contour line of profile bottom surface is log spiral, pole is arranged on axis, and each driving recess portion 11 is same
When communicated with adjacent rank runner so that preceding single order runner enter gas exported by lower single order runner.
3 inlet channel of core i.e. the 1st rank runner trend can be common curved line or helix in the utility model, and each time
The trend in stroke road is also possible to common curved line or helix in swash of wave road i.e. N rank runner.
Such as Fig. 6 and Fig. 7, the utility model core 3 is equipped with inlet channel 31, and trend is by intermediate pair extended outward
The trend of number helix, the stroke road in secondary swash of wave road 300 is log spiral, and the stroke road log spiral in secondary swash of wave road is walked
Move towards roughly the same to inlet channel log spiral.The trend of 3 inlet channel of core is pair extended outward by centre
Number helix, in the core on mandrel line, log spiral moves towards 15 ° -45 ° of angle, angle for the pole setting of the log spiral
Smaller, runner is longer, is lost more；Angle is bigger, drives the tangential component of outer ring smaller.
Fig. 3, Fig. 4 and Fig. 5 are please referred to, inlet, outlet axle track 21,210 forms inlet and outlet in the utility model axis 2, into,
Outlet axle track is not connectivity structure.The inlet and outlet of axis can be set at axis one end or axis both ends, air inlet axle track 21 and core
Inlet channel 31 communicate, the axially extending formation outlet axle track 210 in the gas outlet of axis, the exhaust passage of outlet axle track and core
310 communicate.
Aerodynamic device involved by present application is the device for referring to for gas to be converted into mechanical rotation, wherein the dress
It sets in addition to necessary outer ring, core and its respective recess structure or flow passage structure design, can also additionally include other component；Example
Such as, it can additionally include being provided with shell and sealing structure of outer protection etc., for another example can additionally include being provided with torque transfer
Shaft coupling etc..Wherein, outer ring can rotate the difference of the way of output according to machinery and specific manifestation form is varied, such as
External tooth form structure is formed on the outside of outer ring, in favor of passing through gear-driven mode output kinetic energy；In another example outer ring has belt grooves,
The output kinetic energy in a manner of being driven by belt；Again for example outer ring have mounting flange, install with can be convenient shaft coupling with
Output kinetic energy；Etc..The material of core and outer ring is made of hard material, is not limited to metal, metal alloy, plastics, composite wood
The recess structure of matter, core and outer ring or the processing method of flow passage structure can be realized using all known means of productions, be wrapped
It includes and is not limited to die casting, forging, extruding, 3D printing etc..The air pressure for being input to the power device can be compressor (such as
Pulsometer) generate, the container (such as high pressure gas cylinder) of compression fluid generates,.In this embodiment, outer ring 1 has two groups of skins
Trough of belt is sequentially connected respectively by two groups of belts to the driving running gear 7 of pneumatic grass trimmer and cutter device 6.
It is understood that the grass trimmer of the embodiment is Straddle riding type grass trimmer, in other specific embodiments, also
It can be by the way that hand holding handle is arranged on the rack, to form a hand-held portable grass trimmer；Alternatively, nothing can also be arranged in rack
The wheel group of driving force, and rear frame has upwardly extended Hand steered, to form a hand steered push type grass trimmer.
It should be noted that the inlet channel 31 and exhaust passage 310 and air inlet axle track 21, outlet of core in Fig. 3 and Fig. 6
Axle track 210, although not corresponding to by cartographic convention, for image explanation, the inlet channel of core and exhaust passage are exactly in Fig. 3
Refer to inlet channel and exhaust passage, Fig. 8 and Figure 11 similar signal diagram in embodiment 2.
Embodiment 2: please referring to Fig. 8 to Figure 11, and the pneumatic grass trimmer of the embodiment is substantially the same manner as Example 1, main
Difference are as follows:
It include that 2 independent acting units form secondary drive structure in aerodynamic device, i.e., circumferentially arranged 2 on core 3
Air duct, every air duct include the inlet channel 31 of 1 rank or more and time swash of wave road 300 and lay along core 3 is circumferential
And grate flow channel.Aerodynamic device includes outer ring 1, and inner ring surface circumferential direction is equipped with multiple driving recess portions 11；One core 3,
Be co-axially located in outer ring 1 and can opposite outer ring rotating, the outer ring surface of core be equipped with 2 groups of spouts, Pai Kou and every group of spout and
It arranges and is equipped with swash of wave road at least once between mouth；Core is equipped with 2 inlet channels 31,32, corresponds to connection spout；And 2 exhaust
Channel 310,320 corresponds to connection row's mouth；Two strands of gases pass through the spray of core 3 from entering respectively from 2 inlet channels of core
The ejection stepwise of mouth and secondary swash of wave road 300 acts on the circumferentially upper corresponding driving recess portion 11 in outer ring, drives recess portions to generate these
Thrust pushes the rotation acting of outer ring 1, realizes power output, finally, gas is discharged by the row mouthful of core through exhaust passage.It is above-mentioned
An inlet channel, a spout, the driving recess portion of respective numbers and corresponding secondary swash of wave road, Pai Kou and an exhaust passage formed solely
Vertical acting unit.
The aerodynamic device further includes an axis 2, outer ring 1 and core 3 be coaxially disposed on axis, offered on the axis 2 into
Gas axle track 21,22 and outlet axle track 210,220 are respectively communicated to the inlet channel 31,32 and exhaust passage 310,320 of core.Axis
2 are equipped with two air inlets corresponding with air duct and two gas outlets；Compressed gas enters from two air inlets of axis 2, passes through core
3 inlet channel of body sprays the driving recess portion 11 for acting on outer ring 1, generates thrust and pushes the rotation acting of outer ring 1, last compressed gas
Corresponding gas outlet is returned to by the exhaust passage of core 3, realizes the continuous output of power.It is tied in other structures and embodiment 1
Structure is identical, repeats no more.
Embodiment 3: the pneumatic grass trimmer of the embodiment, substantially the same manner as Example 1, the main distinction are as follows:
Independent acting unit in the utility model aerodynamic device including 4 or more forms multiple drive power structure, core
Circumferentially arranged 3 or more air ducts on body, every air duct include the inlet channel and time swash of wave road of 1 rank or more
And it is circumferentially laid along core and the mating surface of left and right core is arranged in grate flow channel, inlet channel and exhaust passage.Axis is equipped with
With the air inlet axle track and outlet axle track of air duct corresponding number, compressed gas from the air inlet axle track of axis enter, by core into
Flow channel sprays the driving recess portion for acting on outer ring, pushes outer ring rotation acting, realizes the continuous output of power, last compressed gas
Body returns to corresponding outlet axle track by each grate flow channel of core.Other structures are identical as structure in embodiment 1.
It should be apparent to a person skilled in the art that the pneumatic grass trimmer can not also in other specific embodiments
Storage tank is set, the inlet channel 31 of aerodynamic device is connected to high-pressure air source by soft air-guide pipe, this equally may be implemented
Utility model technical effect.The foregoing descriptions are merely the embodiment using this origination techniques content, any those skilled in the art
The modifications and changes done with this creation, all belong to the scope of the patents of this creation opinion, and are not limited to those disclosed embodiments.
Claims (10)
1. a kind of pneumatic grass trimmer, including a rack, which is equipped with cutter device and power device, the power device with
The cutter device is drivingly connected；It is characterized by:
The power device is aerodynamic device comprising:
One outer ring, inner ring surface circumferential direction are equipped with multiple driving recess portions；
One core, be co-axially located in outer ring and can opposite outer ring rotating, the outer ring surface of core is equipped with an at least spout, at least
One row mouthful and the swash of wave road at least once between spout and row's mouth；
An at least inlet channel is connected to an at least spout；And
An at least exhaust passage, a connection at least row mouthful；
Gas enters from inlet channel, by the ejection stepwise of the spout and secondary swash of wave road of core, acts in the circumferential direction of outer ring
At least two driving recess portions generate thrust to these driving recess portions and push outer ring rotation acting, power output realized, finally, gas
It is discharged by the row mouthful of core through exhaust passage.
2. pneumatic grass trimmer according to claim 1, it is characterised in that: an at least inlet channel, at least a spout, at least
Two driving recess portions, at least once swash of wave road, an at least row mouthful and an at least exhaust passage form independent acting unit, and the gas is dynamic
It include at least one unit that independently does work in power device.
3. pneumatic grass trimmer according to claim 1, it is characterised in that: inlet channel and exhaust passage are formed in core
Interior, spout and secondary swash of wave road on core, driving recess portion connection corresponding with outer ring, secondary swash of wave road is circumferentially set along core or outer ring
It sets.
4. pneumatic grass trimmer according to claim 3, it is characterised in that: include on core
Inlet channel forms spout in core circumferential surface, and trend is by the intermediate curved line extended outward, spout and outer ring pair
The driving recess portion connection answered, forms the 1st rank runner；
Secondary swash of wave road, trend are that core edge inwardly arrives the curved line that edge bends extension again, each time swash of wave road and outer ring
Corresponding front and back two drives recess portion connection, circumferentially forms N rank runner along core, wherein the natural number of N >=2；
Each rank runner driving recesses fit corresponding with outer ring forms the multistage stroke structure that gas energy successively decreases.
5. pneumatic grass trimmer according to claim 3, it is characterised in that: the trend of core inlet channel be by it is intermediate outward
The log spiral of extension, in the core on mandrel line, log spiral moves towards 15 ° of angle-for the pole setting of the log spiral
45°。
6. pneumatic grass trimmer according to claim 1, it is characterised in that: the aerodynamic device further includes an axis, outer ring
In being offered on axis on the axis, inlet, outlet axle track is respectively communicated to the inlet channel of core and exhaust is led to core coaxial arrangement
Road.
7. pneumatic grass trimmer according to claim 2, it is characterised in that: include two or more only in the aerodynamic device
Vertical acting unit forms multiple drive power structure, and is circumferentially arranged along core or outer ring.
8. pneumatic grass trimmer according to any one of claims 1 to 7, it is characterised in that: be provided with 2 on the inner ring surface of outer ring
The above driving recess portion, each driving recess portion have a profile bottom surface and drive surface, and the contour line of profile bottom surface is logarithmic spiral
The heart in the core is arranged in line, pole.
9. pneumatic grass trimmer according to any one of claims 1 to 7, it is characterised in that: be additionally provided in the rack one for pair
The storage tank of aerodynamic device gas supply；The storage tank passes through valve component pipeline connection to the inlet channel.
10. pneumatic grass trimmer according to any one of claims 1 to 7, it is characterised in that: further include the first and second transmissions dress
It sets, the outer ring of the aerodynamic device is sequentially connected by first transmission device and the cutter device；It is additionally provided in the rack
Running gear, the outer ring of the aerodynamic device are connect with the running gear by second drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821336913.0U CN208940384U (en) | 2018-08-19 | 2018-08-19 | A kind of pneumatic grass trimmer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821336913.0U CN208940384U (en) | 2018-08-19 | 2018-08-19 | A kind of pneumatic grass trimmer |
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| CN208940384U true CN208940384U (en) | 2019-06-07 |
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| CN201821336913.0U Active CN208940384U (en) | 2018-08-19 | 2018-08-19 | A kind of pneumatic grass trimmer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020038164A1 (en) * | 2018-08-19 | 2020-02-27 | 传孚科技（厦门）有限公司 | Pneumatic device |
-
2018
- 2018-08-19 CN CN201821336913.0U patent/CN208940384U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020038164A1 (en) * | 2018-08-19 | 2020-02-27 | 传孚科技（厦门）有限公司 | Pneumatic device |
| US11441445B2 (en) | 2018-08-19 | 2022-09-13 | Tranf Technology (Xiamen) Co., Ltd. | Pneumatic device |
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