CN110018561A - A kind of elevated line tour peephole of strong interference immunity - Google Patents
A kind of elevated line tour peephole of strong interference immunity Download PDFInfo
- Publication number
- CN110018561A CN110018561A CN201910335428.4A CN201910335428A CN110018561A CN 110018561 A CN110018561 A CN 110018561A CN 201910335428 A CN201910335428 A CN 201910335428A CN 110018561 A CN110018561 A CN 110018561A
- Authority
- CN
- China
- Prior art keywords
- shell
- object lens
- hood
- peephole
- shank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
Abstract
The elevated line that the present invention provides a kind of strong interference immunity makes an inspection tour peephole, is related to line inspection apparatus field.Solving tour peephole cannot exclude external interference when working on mountain, cause to make an inspection tour the inaccurate problem of data.The elevated line of the strong interference immunity makes an inspection tour peephole, including auxiliary leg, main pillar, elevating mechanism, hood, capture object lens, shank, imaging eyepiece, adjusting knob, rotary support.The present invention passes through rotation hood shell and slides hood shell after improving, to realize the flexible of hood, strong shadow is avoided to ring the fault condition that tour personnel observes elevated line, fish pelargonium powder is blown out from row powder channel simultaneously, to achieve the purpose that expelling parasite, in addition, the flexible of capture object lens may be implemented in rotation groove bung flange, the anti-interference of equipment can be improved in overall co-ordination, improves the accuracy for making an inspection tour data.
Description
Technical field
The present invention relates to line inspection apparatus fields, particularly make an inspection tour observation for a kind of elevated line of strong interference immunity
Mirror.
Background technique
Elevated line is chronically under open-air atmosphere due to having a very wide distribution, thus be frequently subjected to ambient enviroment and
The influence of the Nature variation, is easily out of order.If elevated line breaks down, does not simply fail to give resident's normal power supply, also threaten
Life threat can be brought to neighbouring resident to the life security of the Nature creature, and also, therefore tour personnel is needed often to go to make an inspection tour
And keep a record, making an inspection tour peephole then is essential equipment in making an inspection tour.Existing tour peephole has following deficiency to need to be changed
Into:
1, making an inspection tour route would generally be on mountain, and small insects are numerous on mountain, and tour personnel is when using peephole, insect
It can flutter on objective lenses, so as to cause occurring dot on lens, interference tour personnel's work enables tour personnel not see
The image of elevated line causes tour data inaccurate, and eventually leading to out of order elevated line cannot timely repair, and give
Neighbouring resident brings potential life threat.
2, the hood maked an inspection tour on peephole does not have a Telescopic, tour personnel cannot according to the power of sunray come
Shading degree is adjusted, is had a certain impact to observation elevated line tool, resultant interference makes an inspection tour the accuracy of data.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of elevated lines of strong interference immunity to make an inspection tour peephole, solution
Tour peephole of having determined cannot exclude external interference when working on mountain, cause to make an inspection tour the inaccurate problem of data.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of overhead route of strong interference immunity
Peephole, including auxiliary leg, main pillar, elevating mechanism, hood, capture object lens, shank, imaging eyepiece, adjusting are maked an inspection tour in road
Knob, rotary support, it is characterised in that:
There are three the auxiliary leg is set, and bottom is conical structure, and rotation branch is installed on by way of spiral
Seat lower end, the main pillar is cylindrical structure, and upper end insertion is installed at the center of rotary support lower end, the rotary support
It installs in elevating mechanism bottom end, the connection of the two spiral, the elevating mechanism upper end is connected with shank lower end, and the shading is provide with
In shank right end, the capture object lens are installed in shank left end, there are two the adjusting knob is set, are respectively screw and are installed on lifting
Mechanism left and right ends;
The hood includes with flowering structure: hood shell, magnetic force mechanism, object lens shell, support hard iron, permanent magnetic
Iron, expelling parasite mechanism, bar shaped iron, groove bung flange, screw rod, the hood shell are circular configuration, and engage and be installed on the shank right side
End, the object lens shell is located at hood interior of shell, and is connected with shank right end, there are four the magnetic force mechanism is set altogether,
And it is chimeric be installed on hood outer casing inner wall, there are four the support hard iron is set, and be fitted into and be installed on object lens outer surface of outer cover, institute
Stating alnico magnets is arcuate structure, and is connected with support hard iron, and the expelling parasite mechanism is set between two support hard iron, and
It is connected with object lens outer surface of outer cover, the groove bung flange is set to shank right end, the screw rod right end and capture object lens left end spiral shell
Line installation, the bar shaped iron are set to capture object lens left end, and the screw rod engages connection with bar shaped iron.
As advanced optimizing for the technical program, the magnetic force mechanism include mounting groove, arc-shaped magnet, movable pressing board,
Ox horn buckling plate, the mounting groove is chimeric to be installed on hood inner surface of outer cover, and ox horn buckling plate lower end is installed in installation
Inside slot, and upper end is equipped with arc-shaped magnet, and the movable pressing board upper end is semi-circular structure, and lower end is on ox horn buckling plate
End.
As advanced optimizing for the technical program, the expelling parasite mechanism includes row powder channel, expelling parasite cylinder, push plate, curved
Shape Door frame, installation sliding slot, toothed oak wood loading board, the toothed oak wood loading board is chimeric to be installed on object lens outer surface of outer cover, the expelling parasite cylinder
It is embedded to install inside toothed oak wood loading board, there are two the installation sliding slot is set, and set on expelling parasite cylinder lower end, the bending Door frame
Be connected with installation sliding slot lower end, and be connected by push plate with expelling parasite cylinder interior lower end, row's powder channel equipped with multiple,
It is connected inside toothed oak wood loading board, and with expelling parasite cylinder left and right ends.
As advanced optimizing for the technical program, the groove bung flange includes bung flange shell, triangle latch, driving cog
Wheel, the bung flange shell is connected with shank right end, and the triangle latch is equipped with multiple altogether, and is embedded in table in triangle latch
Face, the transmission gear are connect with screw rod fitting, and engage connection with triangle latch.
As advanced optimizing for the technical program, the bending Door frame includes Door frame ontology, advance ball, described
Door frame body surface is inlaid with multiple advance balls.
As advanced optimizing for the technical program, the main pillar bottom end is equipped with boat form and damps nitrile rubber pad.
As advanced optimizing for the technical program, the bar shaped iron upper and lower ends are arc structure, and and magnetic force mechanism
Radian size matches.
As advanced optimizing for the technical program, corrects under the arc-shaped magnet and fasten with ox horn buckling plate, and
There are certain spaces.
(3) beneficial effect
The present invention provides a kind of elevated lines of strong interference immunity to make an inspection tour peephole.Have following
The utility model has the advantages that
1, in the present invention, the elevated line of the strong interference immunity makes an inspection tour peephole, forces arc by rotating hood shell
Shape magnet and alnico magnets separation, continue to rotate, and until movable pressing board is connected with bending Door frame, and allow movable pressing board edge
The sliding of bending Door frame, and the advance ball on Door frame ontology can accelerate the sliding of movable pressing board, to realize hood
Stretching for shell, facilitates tour personnel and adjusts shading degree according to the power of sunray, avoids strong polished bard eye from reducing and makes an inspection tour
The accuracy of data.
2, in the present invention, the elevated line of the strong interference immunity makes an inspection tour peephole, squeezes bending chicken wings by movable pressing board
Wood so that it is mobile to drive push plate, and squeezes the gas in expelling parasite cylinder, so that the fish pelargonium powder in expelling parasite cylinder is logical from row's powder
Road is blown out, and does not like the characteristic of fish pelargonium smell using insect, to realize the purpose of expelling parasite.
3, in the present invention, the elevated line of the strong interference immunity makes an inspection tour peephole, by rotating bung flange shell, triangle latch
Also it rotates and is rotated with nutating gear, so that screw rod engages movement with transmission gear, and pushes capture object lens mobile, with
It realizes the flexible of capture object lens, capture object lens is preferably adjusted convenient for tour personnel at a distance from elevated line, improve and make an inspection tour knot
The accuracy of fruit.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is the plan structure sectional view of hood of the present invention;
Fig. 3 is the second form schematic diagram of hood of the present invention;
Fig. 4 is the side view structure sectional view of hood of the present invention;
Fig. 5 is the schematic diagram of internal structure of magnetic force mechanism of the present invention;
Fig. 6 is the schematic diagram of internal structure of expelling parasite mechanism of the present invention;
Fig. 7 is the plan structure tangent sectional view of groove bung flange of the present invention;
Fig. 8 is the sectional perspective structural schematic diagram of bending Door frame of the present invention.
In figure: auxiliary leg 1, main pillar 2, elevating mechanism 3, hood 4, hood shell 41, magnetic force mechanism 42, installation
Slot 421, arc-shaped magnet 422, movable pressing board 423, ox horn buckling plate 424, object lens shell 43, support hard iron 44, alnico magnets
45, expelling parasite mechanism 46, row powder channel 461, expelling parasite cylinder 462, push plate 463, bending Door frame 464, Door frame ontology 4641, cunning
Dynamic ball 4642, installation sliding slot 465, toothed oak wood loading board 466, bar shaped iron 47, groove bung flange 48, bung flange shell 481, triangle latch
482, transmission gear 483, screw rod 49, capture object lens 5, shank 6, imaging eyepiece 7, adjusting knob 8, rotary support 9.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The elevated line that the embodiment of the present invention provides a kind of strong interference immunity makes an inspection tour peephole, as shown in figures 1-8, including it is auxiliary
Help supporting leg 1, main pillar 2, elevating mechanism 3, hood 4, capture object lens 5, shank 6, imaging eyepiece 7, adjusting knob 8, rotation branch
Seat 9, it is characterised in that:
There are three the auxiliary leg 1 is set, and bottom is conical structure, and rotation branch is installed on by way of spiral
9 lower ends of seat, the main pillar 2 is cylindrical structure, and upper end insertion is installed at 9 lower end center of rotary support, the rotation
Support 9 is installed in 3 bottom end of elevating mechanism, and the connection of the two spiral, 3 upper end of elevating mechanism is connected with 6 lower end of shank, described
Hood 4 is set to 6 right end of shank, and the capture object lens 5 install in 6 left end of shank, there are two the adjusting knob 8 is set, respectively
Spiral is installed on 3 left and right ends of elevating mechanism;
The hood 4 includes with flowering structure: hood shell 41, magnetic force mechanism 42, object lens shell 43, support hard iron
44, alnico magnets 45, expelling parasite mechanism 46, bar shaped iron 47, groove bung flange 48, screw rod 49, the hood shell 41 are circle
Structure, and engage be installed on 6 right end of shank, the object lens shell 43 is located inside hood shell 41, and with 6 right end phase of shank
Connection, there are four the magnetic force mechanism 42 is set altogether, and it is chimeric be installed on 41 inner wall of hood shell, the support hard iron 44 is equipped with
Four, and it is chimeric be installed on 43 outer surface of object lens shell, the alnico magnets 45 are arcuate structure, and with support 44 phase of hard iron
Connection, the expelling parasite mechanism 46 is set between two support hard iron 44, and is connected with 43 outer surface of object lens shell, the groove
Bung flange 48 is set to 6 right end of shank, and 49 right end of screw rod and 5 left end screw thread of capture object lens are installed, and the bar shaped iron 47 is set to and takes
As 5 left end of object lens, the screw rod 49 engages connection with bar shaped iron 47.
The magnetic force mechanism 42 includes mounting groove 421, arc-shaped magnet 422, movable pressing board 423, ox horn buckling plate 424, institute
State that mounting groove 421 is chimeric to be installed on 41 inner surface of hood shell, 424 lower end of ox horn buckling plate is installed in mounting groove 421
Inside, and upper end is equipped with arc-shaped magnet 422,423 upper end of movable pressing board is semi-circular structure, and lower end is fastened embedded in ox horn
424 upper end of plate.
The expelling parasite mechanism 46 includes row powder channel 461, expelling parasite cylinder 462, push plate 463, bending Door frame 464, installation
Sliding slot 465, toothed oak wood loading board 466, the toothed oak wood loading board 466 is chimeric to be installed on 43 outer surface of object lens shell, the expelling parasite cylinder 462
It is embedded to install inside toothed oak wood loading board 466, it is described there are two the installation sliding slot 465 is set, and set on 462 lower end of expelling parasite cylinder
Bending Door frame 464 is connected with installation 465 lower end of sliding slot, and is connected by push plate 463 with 462 interior lower end of expelling parasite cylinder
It connects, row's powder channel 461 is equipped with multiple, is located inside toothed oak wood loading board 466, and is connected with 462 left and right ends of expelling parasite cylinder.
The groove bung flange 48 includes bung flange shell 481, triangle latch 482, transmission gear 483, the bung flange shell 481
It is connected with 6 right end of shank, the triangle latch 482 is equipped with multiple altogether, and is embedded in 482 inner surface of triangle latch, the biography
Moving gear 483 is connect with 49 fitting of screw rod, and engages connection with triangle latch 482.
The bending Door frame 464 includes Door frame ontology 4641, advance ball 4642,4641 table of Door frame ontology
Face is inlaid with multiple advance balls 4642.
2 bottom end of main pillar is equipped with boat form and damps nitrile rubber pad, to improve the stability of equipment.
47 upper and lower ends of bar shaped iron are arc structure, and are matched with 42 radian size of magnetic force mechanism, and item is conducive to
Shape iron 47 is slided along magnetic force mechanism 42, to realize the flexible of capture object lens 5.
It corrects under the arc-shaped magnet 422 and fastens with ox horn buckling plate 424, and there are certain space, facilitate work
Dynamic pressure plate 423 squeezes bending Door frame 464.
Contain fish pelargonium powder inside the expelling parasite cylinder 462, to realize the purpose of expelling parasite.
The characteristics of the present embodiment are as follows: first is that, make movable pressing board 423 and bending chicken wings by rotating hood shell 41
Wood 464 is connected, and movable pressing board 423 is allowed to slide along bending Door frame 464, and the advance ball on Door frame ontology 4641
4642 can accelerate the sliding of movable pressing board 423, to realize the flexible of hood shell 41, facilitate tour personnel according to sunlight
The power of line adjusts shading degree, and strong polished bard eye is avoided to reduce the accuracy for making an inspection tour data;Second is that passing through movable pressing board 423
Bending Door frame 464 is squeezed, to drive push plate 463 to squeeze the gas in expelling parasite cylinder 462, so that in expelling parasite cylinder 462
Fish pelargonium powder is blown out from row powder channel 461, does not like the characteristic of fish pelargonium smell, using insect to realize the purpose of expelling parasite;Three
It is that triangle latch 482 and 483 engagement rotation of transmission gear are driven by rotation bung flange shell 481, so that screw rod 49 and biography
The engagement movement of moving gear 483, and push capture object lens 5 mobile, it is more preferable convenient for tour personnel to realize the flexible of capture object lens 5
Ground adjusts capture object lens 5 at a distance from elevated line, improves the accuracy for making an inspection tour result.
In the present embodiment, equipment is stable in hilltop test point using auxiliary leg 1 and main pillar 2 by tour personnel,
Then the height and angle of shank 6, then the elevated line from imaging eyepiece 7 are adjusted.Tour personnel rotates screening counterclockwise
Light shield shell 41 forces arc-shaped magnet 422 and alnico magnets 45 to separate, and rotation hood shell 41 is then proceeded to, until work
Dynamic pressure plate 423 is connected with bending Door frame 464, and slides along bending Door frame 464, meanwhile, on Door frame ontology 4641
Advance ball 4642 can accelerate the sliding of movable pressing board 423, after hood shell 41 is moved to tour personnel desired position,
Hood shell 41 is rotated again until arc-shaped magnet 422 and alnico magnets 45 are tightly bonded, to realize hood shell
41 stretch, adjusts shading degree according to the power of sunray convenient for tour personnel, and strong polished bard eye reduction is avoided to patrol
Depending on the accuracy of data.
Movable pressing board 423 squeezes bending Door frame 464 during sliding, and 464 bending Door frame 464 of bending Door frame is simultaneously
The gas in expelling parasite cylinder 462 is squeezed, so that the fish pelargonium powder in expelling parasite cylinder 462 is blown out from row powder channel 461, and insect
Pole does not like fish pelargonium smell, using this characteristic, to realize the purpose of expelling parasite.
Tour personnel rotates bung flange shell 481 counterclockwise, triangle latch 482 with bung flange shell 481 rotate and with transmission
Gear 483 engages, and band nutating gear 483 rotates, while screw rod 49 engages movement with transmission gear 483, to push capture
Object lens 5 are mobile, to realize the flexible of capture object lens 5, are conducive to tour personnel and preferably adjust capture object lens 5 and elevated line
Distance improves the accuracy for making an inspection tour result.
In conclusion the present invention solves after improving makes an inspection tour peephole when working on mountain, insect can interfere tour personnel
The fault condition and sunray for observing elevated line are unfavorable for by force very much the problem of tour personnel's observation.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of elevated line of strong interference immunity makes an inspection tour peephole, including auxiliary leg (1), main pillar (2), elevating mechanism
(3), hood (4), capture object lens (5), shank (6), imaging eyepiece (7), adjusting knob (8), rotary support (9), feature
It is:
There are three the auxiliary leg (1) sets, and bottom is conical structure, and rotary support is installed on by way of spiral
(9) lower end, the main pillar (2) is cylindrical structure, and upper end insertion is installed at rotary support (9) lower end center, described
Rotary support (9) is installed under elevating mechanism (3) bottom end, the connection of the two spiral, elevating mechanism (3) upper end and shank (6)
End is connected, and the hood (4) is set to shank (6) right end, and the capture object lens (5) are installed in shank (6) left end, the tune
Section knob (8) is respectively screw there are two setting and is installed on elevating mechanism (3) left and right ends;
The hood (4) includes with flowering structure: hood shell (41), magnetic force mechanism (42), object lens shell (43), support are hard
Iron (44), alnico magnets (45), expelling parasite mechanism (46), bar shaped iron (47), groove bung flange (48), screw rod (49), the shading
Cover shell (41) is circular configuration, and engages and be installed on shank (6) right end, and the object lens shell (43) is located at hood shell
(41) internal, and be connected with shank (6) right end, there are four the magnetic force mechanism (42) sets altogether, and chimeric it is installed on hood
Shell (41) inner wall, there are four the support hard iron (44) sets, and it is chimeric be installed on object lens shell (43) outer surface, it is described permanent
Property magnet (45) be arcuate structure, and with support hard iron (44) be connected, the expelling parasite mechanism (46) be set to two support hard iron
(44) between, and it is connected with object lens shell (43) outer surface, the groove bung flange (48) is set to shank (6) right end, the spiral shell
Bar (49) right end and capture object lens (5) left end screw thread are installed, and the bar shaped iron (47) is set to capture object lens (5) left end, the spiral shell
Bar (49) engages connection with bar shaped iron (47).
2. a kind of elevated line of strong interference immunity according to claim 1 makes an inspection tour peephole, it is characterised in that: the magnetic
Force mechanisms (42) include mounting groove (421), arc-shaped magnet (422), movable pressing board (423), ox horn buckling plate (424), the peace
Tankage (421) is chimeric to be installed on hood shell (41) inner surface, and ox horn buckling plate (424) lower end is installed in mounting groove
(421) internal, and upper end is equipped with arc-shaped magnet (422), movable pressing board (423) upper end is semi-circular structure, and lower end is embedding
In ox horn buckling plate (424) upper end.
3. a kind of elevated line of strong interference immunity according to claim 1 makes an inspection tour peephole, it is characterised in that: the drive
Worm mechanism (46) includes row powder channel (461), expelling parasite cylinder (462), push plate (463), bending Door frame (464), installation sliding slot
(465), toothed oak wood loading board (466), the toothed oak wood loading board (466) is chimeric to be installed on object lens shell (43) outer surface, the expelling parasite gas
Cylinder (462) is embedded installs it is internal in toothed oak wood loading board (466), there are two the installation sliding slot (465) sets, and set on expelling parasite cylinder
(462) lower end, the bending Door frame (464) are connected with installation sliding slot (465) lower end, and pass through push plate (463) and expelling parasite
Cylinder (462) interior lower end is connected, and row's powder channel (461) is equipped with multiple, and it is internal to be located at toothed oak wood loading board (466), and with
Expelling parasite cylinder (462) left and right ends are connected.
4. a kind of elevated line of strong interference immunity according to claim 1 makes an inspection tour peephole, it is characterised in that: the tooth
Line bung flange (48) includes bung flange shell (481), triangle latch (482), transmission gear (483), the bung flange shell (481) and mirror
Body (6) right end is connected, and the triangle latch (482) is equipped with multiple altogether, and is embedded in triangle latch (482) inner surface, described
Transmission gear (483) is connect with screw rod (49) fitting, and engages connection with triangle latch (482).
5. a kind of elevated line of strong interference immunity according to claim 3 makes an inspection tour peephole, it is characterised in that: described curved
Shape Door frame (464) includes Door frame ontology (4641), advance ball (4642), Door frame ontology (4641) surface inserting
There are multiple advance balls (4642).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201910335428.4A CN110018561B (en) | 2019-04-24 | 2019-04-24 | Overhead line inspection observation mirror with strong anti-interference performance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201910335428.4A CN110018561B (en) | 2019-04-24 | 2019-04-24 | Overhead line inspection observation mirror with strong anti-interference performance |
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Publication Number | Publication Date |
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CN110018561A true CN110018561A (en) | 2019-07-16 |
CN110018561B CN110018561B (en) | 2021-09-03 |
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ID=67192370
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201910335428.4A Active CN110018561B (en) | 2019-04-24 | 2019-04-24 | Overhead line inspection observation mirror with strong anti-interference performance |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111404073A (en) * | 2019-11-26 | 2020-07-10 | 国网浙江省电力有限公司金华供电公司 | Multifunctional safety protector for power transmission line inspection |
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CN107688234A (en) * | 2016-08-03 | 2018-02-13 | 克尔公司 | Magnifying glass with the interchangeable telescope of magnetic |
CN208092322U (en) * | 2018-03-21 | 2018-11-13 | 重庆东方光电有限公司 | Telescope hood fixed mechanism |
CN208092320U (en) * | 2018-03-20 | 2018-11-13 | 重庆东方光电有限公司 | Telescopic intelligent positioning monocular |
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JPH08194164A (en) * | 1995-01-13 | 1996-07-30 | Fuji Photo Optical Co Ltd | Telescope provided with collimator |
CN202693904U (en) * | 2012-07-17 | 2013-01-23 | 苏州信达光电科技有限公司 | Refracting telescope |
CN205720862U (en) * | 2016-04-14 | 2016-11-23 | 王靖雨 | Telescope instrument is used in a kind of teaching |
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