CN107404087B - A kind of transmission line of electricity removes foreign matter device - Google Patents
A kind of transmission line of electricity removes foreign matter device Download PDFInfo
- Publication number
- CN107404087B CN107404087B CN201710848806.XA CN201710848806A CN107404087B CN 107404087 B CN107404087 B CN 107404087B CN 201710848806 A CN201710848806 A CN 201710848806A CN 107404087 B CN107404087 B CN 107404087B
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- China
- Prior art keywords
- transmission line
- cleaning
- electricity
- motor
- swivel becket
- Prior art date
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 49
- 230000005611 electricity Effects 0.000 title claims abstract description 46
- 238000004140 cleaning Methods 0.000 claims abstract description 75
- 230000007246 mechanism Effects 0.000 claims abstract description 48
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 14
- 239000010439 graphite Substances 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 10
- 239000004020 conductor Substances 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002337 anti-port Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000002224 dissection Methods 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
-
- B08B1/10—
-
- B08B1/12—
-
- B08B1/145—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
Abstract
The present invention relates to a kind of transmission lines of electricity to remove foreign matter device, belong to technical field of electric power, the device includes support frame and one group of cleaning cylinder for being articulated with its periphery, cleaning cylinder is two-flap type separate structure, no less than two groups of walking mechanism is disposed with along transmission line of electricity direction inside it, walking mechanism includes a pair of of the traveling wheel and first motor of setting symmetrical above and below；Cleaning agency is additionally provided with inside cleaning cylinder, cleaning agency includes four brush rolls and the second motor, brush roll includes the hairbrush on beaming roller and its surface, cleaning cylinder one end is provided with the mounting ring that cross section is L-type, its lower recess is equipped with the graphite annulus of two-flap type structure, graphite annulus periphery is equipped with cutting mechanism, and cutting mechanism includes one group of cutter of swivel becket and its setting of outer lateral edge annular with driving mechanism.The present invention, which can be realized the cutting of hanger and covering, drill through removing and the cleaning of smaller sundries can really realize the removing of foreign bodies on transmission lines except foreign matter effect is significantly improved.
Description
Technical field
The invention belongs to technical field of electric power, and in particular to a kind of transmission line of electricity removes foreign matter device.
Background technique
Transmission line of electricity is the important component transmitted electricity for power station to subscriber unit, either city or field,
Many transmission lines of electricity will be set up to carry out the conveying of electric power, then, can be existed in routine work, on transmission line of electricity many different
The dirts such as object, such as birds droppings, muddy water, there are also the hangers such as balloon, kite and polybag, if these foreign matters cannot be timely
Processing, easily causes short circuit, and then may cause line tripping power failure, causes unnecessary damage to people's lives and production
It loses.
Currently, there are three ways to traditional removing route foreign matter: 1) staff can use the insulating bar for being tied with cutter,
It stands and carries out operation in face of high aerial route on ground；2) in the case where electrification, operating personnel wears screening clothing and is entered by rope ladder
It is manually removed in strong electrical field；3) it is handled when having a power failure, operating personnel is climbed clear by hand to progress at foreign matter by rope ladder frame
It removes.First method can be potentially encountered the place that cannot be cleared up, and this due to operating stick limited length in operation process
Kind method is limited by landform；Second method needs to expend a large amount of human and material resources, and operation procedure is complicated, and dangerous point is more, needle
It is cumbersome to property safety measure, easily cause staff that electric shock accidents occurs since thought is benumbed, and large labor intensity, it can
It is low by property；The third method needs to contact and coordinate with regulation center in advance, formulates the plan that has a power failure, fulfils examination and approval procedures, this kind behaviour
Prevent defect from handling in time as process, and power failure operation greatly reduces power load, the power supply for influencing transmission line of electricity can
By property, power transmission efficiency is reduced.
Summary of the invention
The shortcomings that the present invention overcomes the prior arts provides a kind of transmission line of electricity except foreign matter device, which can be pre-
It makes and flexibly installs at any time, the dirt, hanger and covering on transmission line of electricity surface can be eliminated, be kept away in the course of work
The case where having exempted from the consuming occurred in the prior art a large amount of manpower and material resources, is not limited, and avoid existing skill by ambient enviroment
The hanger or covering occurred in art is difficult to remove the interruption of foreign matter work caused by eliminating.
The specific technical solution of the present invention is:
A kind of transmission line of electricity removes foreign matter device, and key point is that the device includes the support frame at middle part and is articulated with its periphery
One group of cleaning cylinder, cleaning cylinder is that fit two-flap type separate structure is carried out by bindiny mechanism, is cleared up inside cylinder along power transmission line
Road direction is disposed with no less than two groups of walking mechanism, and walking mechanism includes a pair of setting symmetrical above and below and clamping transmission line of electricity
Traveling wheel and the first motor for driving walking mechanism；It is additionally provided with cleaning agency inside cleaning cylinder, cleaning agency includes around transmission of electricity
Route is arranged and in four brush rolls of distributed rectangular and the second motor of driving cleaning agency, and brush roll includes beaming roller and its surface
Hairbrush, hairbrush is in contact with transmission line of electricity surface；Described cleaning cylinder one end is provided with the mounting ring that cross section is L-type, under
Recess is equipped with the graphite annulus of two-flap type structure, and graphite annulus periphery is equipped with cutting mechanism, and cutting mechanism includes having driving machine
The swivel becket of structure and its one group of cutter of outer lateral edge annular setting, swivel becket are that fit two-flap type is carried out by bindiny mechanism
Separate structure, the setting of graphite annulus excircle is fluted, is provided with the erecting bed matched with groove on the inside of swivel becket.
The output end of the first motor is connected with the axis of a traveling wheel in walking mechanism；Second motor
Output end be connected with a beaming roller in cleaning agency, the hairbrush end of adjacent brush roll intersects.
The walking mechanism is two groups and is disposed in proximity to cleaning cylinder medium position；The cleaning agency be two groups and
It is located at close to cleaning cylinder end positions, two groups of cleaning agencies share four beaming rollers, and each beaming roller is set close to end positions
It is equipped with hairbrush, the end of one of beaming roller is worm screw, and the second motor output end is provided with the worm gear with worm screw engaged transmission；Institute
The driving mechanism for stating swivel becket includes the annular rack being set on the inside of swivel becket and the tooth for being set to the second motor output end
Wheel, annular rack are meshed with gear.
The cutter include the point of a knife of the knife spine of linear, the blade of arc and end, blade inner end and rotation
The distance between ring excircle is less than the distance between knife spine inner end and swivel becket excircle, and the spacing of point of a knife and transmission line of electricity is small
Spacing in knife spine inner end and transmission line of electricity, the angle where cutter between plane and swivel becket end face is 30-60 degree, rotation
The rotation direction of ring is to meet the direction of blade.
It is provided on the support frame on controller and its both sides of the face and is provided with range sensor, Distance-sensing
The signal output end of device is connected with the signal input part of controller, the signal output end and the control terminal phase of first motor of controller
Even.
The cleaning cylinder upper end is provided with solar panel, the power output end of solar panel and the first electricity
Machine, the second motor, controller and range sensor power input end be connected.
The beneficial effects of the present invention are: the present invention realizes walking and folder by two walking mechanisms being arranged in cleaning cylinder
Tight transmission line of electricity avoids the interference of barrel and transmission line of electricity in the cleaning cylinder course of work, ensure that except foreign matter device is along power transmission line
The normal operating conditions on road, meanwhile, cutting mechanism can be cut and be drilled through removing to hanger, covering etc., be avoided
The case where bulk sundries blocking cleaning cylinder, cleaning agency can carry out the objects such as the sundries of cable surface, such as birds droppings, sludge
It cleans, and cutting mechanism can be to provide wind-force inside cleaning cylinder, which can blow out the sundries after cleaning in cleaning cylinder,
It can also facilitate cleaning of the cleaning agency to the dampnesses object such as sludge to wind-force drying is carried out inside cleaning cylinder, and
The wind-force can also provide cooling medium for internal work part, avoid non-normal working caused by cleaning cylinder internal high temperature.
Detailed description of the invention
Fig. 1 is the mounting structure schematic diagram that foreign matter device is removed in the present invention.
Fig. 2 is the schematic diagram of internal structure that cylinder is cleared up in the present invention.
Fig. 3 is the enlarged structure schematic diagram of A in Fig. 2.
Fig. 4 is the schematic cross-section of walking mechanism position in Fig. 2.
Fig. 5 is the schematic cross-section of cleaning agency position in Fig. 2.
Fig. 6 is mounting structure schematic diagram of the cutter on swivel becket in the present invention.
Fig. 7 is the left view of conductor spacer in Fig. 1.
In attached drawing, 1, support frame, 2, cleaning cylinder, 201, mounting ring, 202, graphite annulus, 3, transmission line of electricity, 4, traveling wheel,
401, first motor, the 501, second motor, 502, beaming roller, 503, hairbrush, 504, worm screw, 505, worm gear, 6, swivel becket, 601, peace
Dress platform, 602, annular rack, 7, cutter, 701, knife spine, 702, blade, 703, point of a knife, 8, controller, 9, range sensor,
10, solar panel, 11, conductor spacer.
Specific embodiment
The present invention relates to a kind of transmission lines of electricity to remove foreign matter device, which includes the support frame 1 at middle part and be articulated with its week
One group of cleaning cylinder 2 on side, cleaning cylinder 2 are that fit two-flap type separate structure is carried out by bindiny mechanism, are cleared up inside cylinder 2 along defeated
3 direction of electric line is disposed with no less than two groups of walking mechanism, and walking mechanism includes setting symmetrical above and below and clamping transmission line of electricity 3
A pair of of traveling wheel 4 and drive walking mechanism first motor 401；Cleaning agency, cleaning agency are additionally provided with inside cleaning cylinder 2
Including being arranged around transmission line of electricity 3 and in four brush rolls of distributed rectangular and the second motor 501 of driving cleaning agency, brush roll
Including beaming roller 502 and its hairbrush on surface 503, hairbrush 503 is in contact with 3 surface of transmission line of electricity；2 one end of cleaning cylinder setting
Having cross section is the mounting ring 201 of L-type, and lower recess is equipped with the graphite annulus 202 of two-flap type structure, 202 periphery peace of graphite annulus
Equipped with cutting mechanism, cutting mechanism includes one group of cutter of swivel becket 6 and its setting of outer lateral edge annular with driving mechanism
7, swivel becket 6 is that fit two-flap type separate structure is carried out by bindiny mechanism, and the setting of 202 excircle of graphite annulus is fluted, turns
The erecting bed 601 matched with groove is provided on the inside of rotating ring 6.
Specific embodiment, as shown in Figures 1 to 7, cleaning cylinder 2, graphite annulus 202 and swivel becket 6 in the present invention are
The separate structure of two-flap type can be mounted at any time on transmission line of electricity 3, clear up cylinder 2 and swivel becket 6 is carried out by bindiny mechanism
Two seperated valves are attached, are easily installed and later period demolition and maintenance, stone by zoarium, the form that bindiny mechanism is connected by screw bolts
The setting of black ring 202 is between cleaning cylinder 2 and swivel becket 6 and is snapped clampings, no setting is required bindiny mechanism, and graphite annulus 202 is turn
The rotation of rotating ring 6 provides circumferential sliding medium, and structure is simply hardly damaged；In order to reduce installation cost and program, the present invention
In except foreign matter device power transmission cable 3 carry out conductor spacer 11 install when simultaneously installed, two adjacent conductor spacers 11 it
Between installation one remove foreign matter device, be respectively provided with except being provided on the support frame 1 of foreign matter device on controller 8 and its both sides of the face
There is range sensor 9, the signal output end of range sensor 9 is connected with the signal input part of controller 8, the signal of controller 8
Output end is connected with the control terminal of first motor 401, after installation, except one end of the not set cutting mechanism of foreign matter device is close to interval
Plate 11 is arranged, and when needing to start, sends enabling signal, subsequent first motor to controller 8 by mobile terminal from operator
401 and second motor 501 start, except foreign matter device is moved along transmission line of electricity 3 to adjacent 11 direction of conductor spacer, when support frame 1
On range sensor 9 in direction of advance side sense when there is the i.e. conductor spacer 11 of barrier, send the signal to controller 8
In, controller 8 controls 401 antiport of first motor, except foreign matter device original road is retracted, when the Distance-sensing for retracting direction side
Device 9 sense occur barrier i.e. conductor spacer 11 when, send the signal to controller 8, controller 8 controls first motor 401 again
Original rotation direction when secondary antiport, i.e. just starting, except foreign matter device moves back and forth as procedure described above, when needing to shut down
When, operator sends stopping signal to controller by mobile terminal, except foreign matter device stops at home position.
2 upper end of cleaning cylinder of the device is provided with solar panel 10, the power output end of solar panel 10 with
First motor 401, the second motor 501, controller 8 and range sensor 9 power input end be connected, solar panel 10
It towards south and is the sweptback set-up mode in upper end, the angle of inclined surface and vertical direction is 30-70 degree, solar battery
Plate 10 provides electric energy for the present apparatus, in addition to this, is also equipped with lithium battery in the device, can not power in solar panel 10
When, for lithium battery for powering, solar panel 10 is preferably that lithium battery charges when can generate electricity, and is avoided due to for a long time
Device short of electricity caused by cloudy day and the case where can not work, the setting of the power supply mode, which saves, carries out power line for device
The connection on road is arranged, and the foreign matter device that removes in the present invention designs succinct, energy conservation.
In walking mechanism, the output end of first motor 401 is connected with the axis of a traveling wheel 4 in walking mechanism, another
A traveling wheel 4 is driven wheel；The output end of second motor 501 is connected with a beaming roller 502 in cleaning agency, adjacent brush roll
503 end of hairbrush intersect, when one beaming roller 502 of the second motor driven rotates, other three beaming rollers are by hairbrush
503 it is mutual driving and rotate, to play the role of 3 Superficial Foreign Body of wiper transmission line of electricity；Walking mechanism is two groups and setting
In close to cleaning 2 medium position of cylinder, cleaning agency is two groups and is located at close to cleaning 2 end positions of cylinder, such setting
Either advance or retreat so that no matter clearing up cylinder 2, transmission line of electricity 3 is all to first pass through cleaning agency then to pass through vehicle with walking machine
Structure, avoids the normal operation of foreign materials away walking mechanism, while also avoiding first passing through traveling wheel without cleaning agency
The phenomenon that foreign matter caused by rolling is difficult to clean off；Two groups of cleaning agencies share four beaming rollers 502, and each beaming roller 502 is close to two
End position is provided with hairbrush 503, and the end of one of beaming roller 502 is worm screw 504,501 output end of the second motor be provided with
The worm gear 505 of 504 engaged transmission of worm screw；The driving mechanism of the swivel becket 6 includes the annular rack for being set to 6 inside of swivel becket
602 and it is set to the gear 603 of the second motor output end, annular rack 602 is meshed with gear 603, the rotation of gear 603
It drives annular rack 602 to be rotated, beaming roller 502 can either be driven to rotate after the starting of the second motor 501, can also drive rotation
Ring 6 is rotated, while realizing that shearing is synchronous with cleaning to be carried out, and has avoided hanger or covering and cutting mechanism
The situation of cleaning agency effect difference caused by when not working.
Cutter include the point of a knife 703 of the knife spine 701 of linear, the blade 702 of arc and end, 702 inner end of blade
The distance between 6 excircle of swivel becket be less than the distance between 701 inner end of knife spine and 6 excircle of swivel becket, point of a knife 703 with it is defeated
The spacing of electric line 3 is less than the spacing of knife spine 701 inner end and transmission line of electricity 3,7 place plane of cutter and 6 end face of swivel becket it
Between angle be 30-60 degree, the rotation direction of swivel becket 6 is to meet the direction of blade 702, by above-mentioned setting structure it is found that knife spine
701 compared to blade 702 closer to transmission line of electricity 3, the point of a knife 703 of cutter 7 be it is inclined to transmission line of electricity 3, it is all to cut
Cutter 7 forms the cut surface of taper after operating, can either realize dissection, additionally it is possible to realize drilling action, such as transmit electricity
Carton is hung on route 3, then the cut surface is in advance without can be cut, but also can by carton from centre to
Periphery segmentation, forms the effect of drill, avoiding problems the dissections simply by virtue of cutter to be difficult to clean off hanger
Phenomenon, the significant perfect present apparatus remove the function of foreign matter, have achieved the purpose that not to be able to achieve in the prior art；In addition, cutter 7
Setting shape yet form the shear action to air, be equivalent to the airflow effects of fan, all cutter 7 shear air and
The wind-force of formation blows in cleaning cylinder 2, and the sundries blowout cleaning cylinder 2 which forms after capable of cleaning cleaning agency avoids
Sundries residual after cleaning is deposited in cleaning cylinder, can keep the cleaning validity of cleaning agency for a long time, meanwhile, the wind
Power can also avoid the non-normal working that each rotary part is caused after thermal accumlation to be aerated heat dissipation inside cleaning cylinder.
Claims (5)
1. a kind of transmission line of electricity removes foreign matter device, it is characterised in that: the device includes the support frame (1) at middle part and is articulated with its week
One group of cleaning cylinder (2) on side, cleaning cylinder (2) is that fit two-flap type separate structure is carried out by bindiny mechanism, in cleaning cylinder (2)
Portion is disposed with no less than two groups of walking mechanism along transmission line of electricity (3) direction, and walking mechanism includes setting symmetrical above and below and clamping
A pair of of traveling wheel (4) of transmission line of electricity (3) and the first motor (401) for driving walking mechanism；It is additionally provided with inside cleaning cylinder (2)
Cleaning agency, cleaning agency include being arranged around transmission line of electricity (3) and in four brush rolls of distributed rectangular and driving cleaning agency
The second motor (501), brush roll includes the hairbrush (503) on beaming roller (502) and its surface, hairbrush (503) and transmission line of electricity (3)
Surface is in contact；Described cleaning cylinder (2) one end is provided with the mounting ring (201) that cross section is L-type, and lower recess is equipped with two valves
The graphite annulus (202) of formula structure, graphite annulus (202) periphery are equipped with cutting mechanism, and cutting mechanism includes with driving mechanism
One group of cutter (7) of swivel becket (6) and its setting of outer lateral edge annular, swivel becket (6) are to carry out zoarium by bindiny mechanism
Two-flap type separate structure, the setting of graphite annulus (202) excircle is fluted, is provided on the inside of swivel becket (6) and matches with groove
Erecting bed (601)；
The output end of the first motor (401) is connected with the axis of a traveling wheel (4) in walking mechanism；Described second
The output end of motor (501) is connected with a beaming roller (502) in cleaning agency, hairbrush (503) end phase of adjacent brush roll
Mutually intersect.
2. a kind of transmission line of electricity according to claim 1 removes foreign matter device, it is characterised in that: the walking mechanism is two
Group and be disposed in proximity to cleaning cylinder (2) medium position；The cleaning agency is two groups and is located at close to cleaning cylinder (2) two
End position, two groups of cleaning agencies share four beaming rollers (502), and each beaming roller (502) is being provided with hairbrush close to end positions
(503), the end of one of beaming roller (502) is worm screw (504), and the second motor (501) output end is provided with and worm screw (504)
The worm gear (505) of engaged transmission；The driving mechanism of the swivel becket (6) includes the annular rack being set on the inside of swivel becket (6)
(602) and it is set to the gear (603) of the second motor output end, annular rack (602) is meshed with gear (603).
3. a kind of transmission line of electricity according to claim 1 removes foreign matter device, it is characterised in that: cutter (7) packet
Include the point of a knife (703) of the knife spine (701) of linear, the blade (702) of arc and end, blade (702) inner end and swivel becket
(6) the distance between excircle be less than the distance between knife spine (701) inner end and swivel becket (6) excircle, point of a knife (703) with it is defeated
The spacing of electric line (3) is less than the spacing of knife spine (701) inner end and transmission line of electricity (3), plane and swivel becket where cutter (7)
(6) angle between end face is 30-60 degree, and the rotation direction of swivel becket (6) is to meet the direction of blade (702).
4. a kind of transmission line of electricity according to claim 1 removes foreign matter device, it is characterised in that: on the support frame (1)
It is provided on controller (8) and its both sides of the face and is provided with range sensor (9), the signal output of range sensor (9)
End is connected with the signal input part of controller (8), the signal output end of controller (8) and first motor (401), the second motor
(501) control terminal is connected.
5. a kind of transmission line of electricity according to claim 1 removes foreign matter device, it is characterised in that: on the cleaning cylinder (2)
End is provided with solar panel (10), the power output end of solar panel (10) and first motor (401), the second motor
(501), the power input end of controller (8) and range sensor (9) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710848806.XA CN107404087B (en) | 2017-09-20 | 2017-09-20 | A kind of transmission line of electricity removes foreign matter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710848806.XA CN107404087B (en) | 2017-09-20 | 2017-09-20 | A kind of transmission line of electricity removes foreign matter device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107404087A CN107404087A (en) | 2017-11-28 |
| CN107404087B true CN107404087B (en) | 2019-01-08 |
Family
ID=60388503
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710848806.XA Active CN107404087B (en) | 2017-09-20 | 2017-09-20 | A kind of transmission line of electricity removes foreign matter device |
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| CN (1) | CN107404087B (en) |
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| CN107404087A (en) | 2017-11-28 |
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