CN113451975A - Multifunctional 10kV live-line work electric insulating cross arm and work method - Google Patents
Multifunctional 10kV live-line work electric insulating cross arm and work method Download PDFInfo
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- CN113451975A CN113451975A CN202110566624.XA CN202110566624A CN113451975A CN 113451975 A CN113451975 A CN 113451975A CN 202110566624 A CN202110566624 A CN 202110566624A CN 113451975 A CN113451975 A CN 113451975A
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- cross arm
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- fixing
- fixing device
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- 238000000034 method Methods 0.000 title claims abstract description 72
- 238000009413 insulation Methods 0.000 claims description 15
- 239000004020 conductor Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000012211 strain insulator Substances 0.000 description 1
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Classifications
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- 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
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/20—Spatial arrangements or dispositions of lines or cables on poles, posts or towers
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/58—Tubes, sleeves, beads, or bobbins through which the conductor passes
-
- 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
Abstract
The invention provides a multifunctional 10kV live-line work electric insulating cross arm and a working method, and relates to the technical field of insulating cross arms. This electronic insulating cross arm of multi-functional 10kV live working includes: the invention also provides a use method of the multifunctional 10kV live-line work electric insulating cross arm, which comprises five methods of a triangular hook fixing use method, a linear hook fixing use method, a triangular hoop fixing use method, a linear hoop fixing use method and a linear type bucket arm vehicle supporting and fixing use method. The switching between the linear cross arm and the triangular cross arm is realized, the problem that the triangular arrangement wires are time-consuming and labor-consuming when the linear cross arm is used is solved, and the problem that the wires cannot be fixed when the wires are vertically arranged is solved; the problem of because of the wire arrangement can effectively be solved, can't install the cross arm, the fixed stay wire problem has improved flexibility, convenience, the reliability of operation, has promoted work efficiency.
Description
Technical Field
The invention relates to the technical field of insulating cross arms, in particular to a multifunctional 10kV live-line work electric insulating cross arm and a working method.
Background
The insulating cross arm used for live-line work of the existing 10kV distribution line is a fixed insulating cross arm, consists of a cross arm, a lead fixing device and a hoop and is used for live-line replacement of the cross arm work project of a straight pole. At present, insulating cross arms are all fixed, the adjustment of cross arm length cannot be realized, the distances between wires are different in different arrangement modes, different wire specifications and whether circuits are erected on the same pole or not, and the operation that the insulating cross arms are fixed for example cannot meet the requirement of the wire arrangement mode is not beneficial to work development.
The wire is big triangle arrangement mode, and this cross arm passes through the staple bolt to be fixed on the pole, and fixed back that finishes will unable removal, can't hoist and support through couple and other devices simultaneously, and the operation is inconvenient, nimble. The cross arm cannot realize triangular fixation of a wire, needs to be hoisted through a crane or a small hoisting arm, falls down a middle phase wire, has complex operation steps and procedures, has higher requirements on the operation level of workers, and has higher requirements on the physical strength of the operators. The wires are vertically arranged, and no relevant insulating cross arm and operation method exist at present.
The existing insulating cross arm is fixed in transverse and longitudinal sizes, inflexible in application scene and limited, is only suitable for fixing the parallel arrangement of the wires and can only adjust the positions of the wire fixing devices, but the cross arm can influence the operation of operators and is inconvenient to operate. Therefore, the method can not be applied to more complex operation projects such as live-line pole replacement, tension pole replacement of a straight pole, pole-mounted transformer replacement by a bypass method, medium-voltage power generation and the like, and has the advantages of single and harsh application conditions, low use frequency and serious waste of resources.
Disclosure of Invention
The invention aims to provide a multifunctional 10kV live-line work electric insulating cross arm and a working method, and solves the problems in the background technology.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an electronic insulating cross arm of multi-functional 10kV live working, includes: the cross arm comprises a cross arm body, an upper end fixing device and a lead fixing device;
the cross arm body comprises a first insulating pipe, a telescopic motor is fixedly installed at the bottom of the first insulating pipe, and a second insulating pipe is fixedly installed at the output end of the telescopic motor;
the top of cross arm body passes through reinforcing bolt fixed connection in upper end fixing device's inside, wire fixing device passes through reinforcing bolt fixed connection on the second insulating tube.
Furthermore, the end fixing device is a hoop type fixing device, a hook type fixing device and a bucket arm vehicle supporting type fixing device.
Furthermore, the first insulating tube and the second insulating tube are both made of epoxy resin materials.
The application method of the multifunctional 10kV live-line work electric insulating cross arm comprises five methods of a triangular lifting hook fixing application method, a linear lifting hook fixing application method, a triangular hoop fixing application method, a linear hoop fixing application method and a linear type bucket arm vehicle support fixing application method.
Furthermore, the triangular lifting hook fixing and using method is used by combining a triangular cross arm combination with a hook type fixing device and combining a crane and a bucket arm vehicle small crane, realizes three-phase simultaneous lifting of wires in a triangular arrangement mode, and is suitable for live replacement of cross arms, live replacement of electric poles and linear poles, and the strain rod operation project.
Furthermore, the straight-line-shaped lifting hook fixing and using method is used by combining a straight-line-shaped cross arm combination with a hook type fixing device and combining with a crane and a trolley crane, realizes three-phase simultaneous lifting of the wires in a straight-line arrangement mode, and is suitable for working projects of live-line cross arm replacement, live-line pole replacement and straight pole-to-strain pole change.
Furthermore, the triangle-shaped staple bolt is fixed to be used, is used by triangle-shaped cross arm combination and staple bolt formula fixing device combination, can be fixed in the pole with the cross arm, realizes that triangle-shaped arrangement mode three-phase wire is fixed temporarily and automatic rising, is applicable to electrified change cross arm, sharp pole and changes strain insulator pole operation project.
Furthermore, the straight-line-shaped hoop fixing use method is combined by the straight-line-shaped cross arm combination and the hoop-shaped fixing device, so that the cross arm can be fixed on the electric pole, the temporary fixing and the automatic lifting of the three-phase lead in the straight-line-shaped arrangement mode and the two-side phase lead in the triangular arrangement mode are realized, and the straight-line-shaped hoop fixing use method is suitable for the operation projects of changing the cross arm and the straight pole into the tension pole in an electrified way.
Furthermore, the linear type bucket arm vehicle support fixing use method is characterized in that the linear type cross arm vehicle support fixing device is used in combination with the bucket arm vehicle support type fixing device, after the bucket arm vehicle small crane is detached, the bottom of the fixing device can be installed on a fixing hole position of the bucket arm vehicle small crane, temporary fixing of three-phase wires in a linear arrangement mode and two-side phase wires in a triangular arrangement mode is achieved, movement and lifting of a cross arm can be achieved through movement of an insulating bucket arm of the bucket arm vehicle and electric adjustment of the fixing device, and the linear type bucket arm vehicle support fixing use method is suitable for live replacement of linear type wire arrangement mode electric poles and linear pole-to-strain pole operation projects.
The invention provides a multifunctional 10kV live-line work electric insulating cross arm and a working method. The method has the following beneficial effects:
according to the invention, the switching between the linear cross arm and the triangular cross arm is realized, the problem that the triangular arrangement wires use the linear cross arm to waste time and labor is solved, and the problem that the vertical arrangement of the wires cannot be fixed is solved; the problems that the cross arm cannot be installed and the wire is fixedly supported due to wire arrangement can be effectively solved, the flexibility, convenience and reliability of operation are improved, the working efficiency is improved, the length and the width of the cross arm can be transversely and longitudinally adjusted, more complex operation items are adapted, the problems of transverse distance and longitudinal distance of the wire are solved, the safety and the reliability of operation are ensured, the flexibility and the convenience are realized, the working efficiency is improved, the multifunctional 10kV live-line operation electric insulation cross arm built-in motor is not limited by the incapability of adjusting the cross arm, the operation personnel adaptation equipment is changed into the equipment adaptation equipment to the operation personnel, the time and the labor are saved, the comfort of the operation environment of the operation personnel is ensured, the personal safety of the operation personnel is improved, the simultaneous hoisting of replacing three-phase wires such as an electric pole, a straight pole, a tension pole and a transformer by a bypass method is realized, the operation steps are reduced, the operation time is saved, the physical power of operating personnel is saved, each part of the multifunctional 10kV live-line work electric insulation cross arm can be disassembled, the problem of cross arm transportation is solved, the insulation performance of an insulation tool is protected, the service life of the tool is prolonged, and resources are saved.
Drawings
FIG. 1 is a view of the triangular hook of the present invention in use;
FIG. 2 is a view of the present invention showing the linear hook used for fixing;
FIG. 3 is a triangular cross arm usage diagram of the present invention;
FIG. 4 is a straight cross arm usage diagram of the present invention;
FIG. 5 is a top view of the anchor ear of the present invention;
fig. 6 is a diagram of the arm car support fixture of the present invention.
Detailed Description
As shown in fig. 1-6: the utility model provides an electronic insulating cross arm of multi-functional 10kV live working, includes:
the cross arm comprises a cross arm body, an upper end fixing device and a lead fixing device;
the cross arm body comprises a first insulating pipe, the bottom of the first insulating pipe is fixedly provided with a telescopic motor, and the output end of the telescopic motor is fixedly provided with a second insulating pipe;
the top of cross arm body is through strengthening bolt fixed connection in upper end fixing device's inside, and wire fixing device is through strengthening bolt fixed connection on the second insulating tube, can realize wire fixer position control, uses in a flexible way, adopts to strengthen bolt fastening, and is firm reliable, and it is convenient to dismantle.
The end fixing device is a hoop type fixing device, a hook type fixing device and a bucket arm vehicle supporting type fixing device, multiple supporting modes are rapidly replaced, the use is flexible, the hoop type fixing device is suitable for various operation requirements, the hoop type fixing device and the bucket arm vehicle supporting type fixing device are fixed by reinforcing bolts, the disassembly is convenient, firmness and reliability are realized, the hoop type fixing device and the bucket arm vehicle supporting type fixing device are both provided with built-in motors, the electric adjustment of the height of the cross arm can be realized, the physical strength of operators is saved, the operation space can be conveniently adjusted by the operators, the first insulating pipe and the second insulating pipe are both made of epoxy resin materials, the epoxy resin materials are high in mechanical strength, good in insulating property and high in stability, the motors can realize the automatic expansion and contraction of the cross arm, the length can be adjusted, the hoop type bucket arm fixing device is suitable for various wire intervals, two parts of heads can be combined, and have two shapes of a linear cross arm and a triangular cross arm, and is suitable for various wire arrangement modes, and the volume is small, Light weight and convenient storage and transportation.
The application method of the multifunctional 10kV live-line work electric insulating cross arm comprises five methods of a triangular lifting hook fixing application method, a linear lifting hook fixing application method, a triangular hoop fixing application method, a linear hoop fixing application method and a linear type bucket arm vehicle support fixing application method.
The triangular lifting hook fixing use method is used by combining a triangular cross arm combination with a hook type fixing device and combining a crane and a bucket arm vehicle small crane, realizes three-phase simultaneous lifting of wires in a triangular arrangement mode, and is suitable for live replacement of cross arms, live replacement of electric poles and linear poles.
The linear lifting hook fixing use method is used by combining a linear cross arm assembly with a hook type fixing device and combining a crane and a bucket arm vehicle small crane, realizes the simultaneous lifting of three phases of wires in a linear arrangement mode, and is suitable for the operation projects of live replacement of cross arms, live replacement of electric poles and change of linear poles into strain poles.
The triangular hoop fixing and using method is characterized in that a triangular cross arm combination and a hoop type fixing device are combined for use, the cross arm can be fixed on an electric pole, three-phase conducting wires in a triangular arrangement mode are temporarily fixed and automatically lifted, and the triangular hoop fixing and using method is suitable for live replacement of cross arms and replacement of linear poles into strain pole operation projects.
The straight-line-shaped hoop fixing use method is characterized in that a straight-line-shaped cross arm combination and a hoop-shaped fixing device are combined for use, the cross arm can be fixed on an electric pole, the temporary fixing and automatic lifting of three-phase conductors of conductors in a straight-line arrangement mode and two-side phase conductors in a triangular arrangement mode are realized, and the straight-line-shaped hoop fixing use method is suitable for live replacement of cross arms and operation projects of changing straight poles into strain poles.
The linear type bucket arm vehicle support fixing use method is characterized in that a linear type cross arm vehicle support fixing device is combined with a bucket arm vehicle support type fixing device for use, after a bucket arm vehicle small crane is detached, the bottom of the fixing device can be installed on a fixing hole position of the bucket arm vehicle small crane, temporary fixing of linear arrangement type three-phase wires and triangular arrangement type two-side phase wires is achieved, movement and lifting of cross arms can be achieved through movement of insulating bucket arms of the bucket arm vehicle and electric adjustment of the fixing device, and the linear type bucket arm vehicle support fixing use method is suitable for live replacement of linear type wire arrangement type electric poles and strain pole operation projects changed from linear poles.
The cross arm has the advantages that multi-scene and multi-function application of one cross arm is realized, the resource utilization efficiency is improved, the problem of single use mode of the original cross arm is solved, the cross arm has great significance for improving the hot-line work efficiency, improving the hot-line work capacity and guaranteeing the personal safety of operators, and the cross arm is used for three or four types of complex work projects of hot-line replacement of the cross arm, replacement of insulators, electric poles, straight poles into tension-resistant poles, straight poles into terminal poles, replacement of transformers on columns by a bypass method, medium-voltage power generation work and the like in 10k distribution network uninterrupted power operation. The main effect is that the wire can be reliably supported and fixed according to operation project and operation needs in the face of different distribution line wire arrangement modes (vertical arrangement, horizontal arrangement, large and small triangular arrangement and the like) in the distribution network uninterrupted operation process, thereby ensuring operation safety and personnel safety, being beneficial to personnel operation and improving work efficiency.
The switching between the linear cross arm and the triangular cross arm is realized, the problem that the triangular arrangement wires are time-consuming and labor-consuming when the linear cross arm is used is solved, and the problem that the wires cannot be fixed when the wires are vertically arranged is solved; the problems that the cross arm cannot be installed and the wire is fixedly supported due to wire arrangement can be effectively solved, the flexibility, convenience and reliability of operation are improved, the working efficiency is improved, the length and the width of the cross arm can be transversely and longitudinally adjusted, more complex operation items are adapted, the problems of transverse distance and longitudinal distance of the wire are solved, the safety and the reliability of operation are ensured, the flexibility and the convenience are realized, the working efficiency is improved, the multifunctional 10kV live-line operation electric insulation cross arm built-in motor is not limited by the incapability of adjusting the cross arm, the operation personnel adaptation equipment is changed into the equipment adaptation equipment to the operation personnel, the time and the labor are saved, the comfort of the operation environment of the operation personnel is ensured, the personal safety of the operation personnel is improved, the simultaneous hoisting of replacing three-phase wires such as an electric pole, a straight pole, a tension pole and a transformer by a bypass method is realized, the operation steps are reduced, the operation time is saved, the physical power of operating personnel is saved, each part of the multifunctional 10kV live-line work electric insulation cross arm can be disassembled, the problem of cross arm transportation is solved, the insulation performance of an insulation tool is protected, the service life of the tool is prolonged, and resources are saved.
The telescopic motor is an electric telescopic rod, belongs to the prior art, and is not described in detail herein.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the inventive concept of the present invention, which falls into the protection scope of the present invention.
Claims (9)
1. The utility model provides an electronic insulating cross arm of multi-functional 10kV live working which characterized in that includes: cross arm body, upper end fixing device and wire fixing device:
the cross arm body comprises a first insulating pipe, a telescopic motor is fixedly installed at the bottom of the first insulating pipe, and a second insulating pipe is fixedly installed at the output end of the telescopic motor;
the top of cross arm body passes through reinforcing bolt fixed connection in upper end fixing device's inside, wire fixing device passes through reinforcing bolt fixed connection on the second insulating tube.
2. The multifunctional 10kV live working electric insulation cross arm according to claim 1, characterized in that: the end fixing device is a hoop type fixing device, a hook type fixing device and a bucket arm vehicle supporting type fixing device.
3. The multifunctional 10kV live working electric insulation cross arm according to claim 1, characterized in that: the first insulating tube and the second insulating tube are both made of epoxy resin materials.
4. The use method of the multifunctional 10kV live-line work electric insulating cross arm is characterized in that the multifunctional 10kV live-line work electric insulating cross arm according to any one of claims 1 to 3 is used, and the method comprises the following steps: the method comprises five methods of a triangular hook fixing and using method, a linear hook fixing and using method, a triangular hoop fixing and using method, a linear hoop fixing and using method and a linear type bucket arm vehicle support and fixing and using method.
5. The use method of the multifunctional 10kV live-line work electric insulation cross arm according to claim 4, is characterized in that: the triangular lifting hook fixing use method is used by combining a triangular cross arm combination with a hook type fixing device and combining a crane and a bucket arm vehicle small crane, realizes three-phase simultaneous lifting of triangular arrangement mode wires, and is suitable for live replacement of cross arms, live replacement of electric poles and linear poles.
6. The use method of the multifunctional 10kV live-line work electric insulation cross arm according to claim 4, is characterized in that: the linear lifting hook fixing use method is used by combining a linear cross arm assembly with a hook type fixing device and combining a crane and a bucket arm vehicle small crane, realizes three-phase simultaneous lifting of the linear arrangement mode wires, and is suitable for live replacement of cross arms, live replacement of electric poles and replacement of linear poles into strain poles.
7. The use method of the multifunctional 10kV live-line work electric insulation cross arm according to claim 4, is characterized in that: the triangular hoop fixing and using method is characterized in that a triangular cross arm combination and a hoop type fixing device are combined for use, the cross arm can be fixed on an electric pole, three-phase conducting wires in a triangular arrangement mode are temporarily fixed and automatically lifted, and the triangular hoop fixing and using method is suitable for live replacement of cross arms and replacement of linear poles into strain pole operation projects.
8. The use method of the multifunctional 10kV live-line work electric insulation cross arm according to claim 4, is characterized in that: the straight-line-shaped hoop fixing use method is characterized in that a straight-line-shaped cross arm combination and a hoop-type fixing device are combined for use, the cross arm can be fixed on an electric pole, the temporary fixing and automatic lifting of three-phase conductors of conductors in a straight-line arrangement mode and two-side phase conductors in a triangular arrangement mode are realized, and the straight-line-shaped hoop fixing use method is suitable for live replacement of cross arms and strain pole changing work projects of straight poles.
9. The use method of the multifunctional 10kV live-line work electric insulation cross arm according to claim 4, is characterized in that: the linear type bucket arm vehicle support fixing use method is used by combining a linear type cross arm assembly with a bucket arm vehicle support type fixing device, after a bucket arm vehicle small crane is detached, the bottom of the fixing device can be installed on a fixing hole position of the bucket arm vehicle small crane, temporary fixing of linear arrangement type three-phase wires and triangular arrangement type two-side phase wires is achieved, movement and lifting of the cross arm can be achieved through movement of an insulating bucket arm of the bucket arm vehicle and electric adjustment of the fixing device, and the linear type bucket arm vehicle support fixing use method is suitable for live replacement of linear type wire arrangement type electric poles and linear pole-to-strain pole operation projects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110566624.XA CN113451975A (en) | 2021-05-24 | 2021-05-24 | Multifunctional 10kV live-line work electric insulating cross arm and work method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110566624.XA CN113451975A (en) | 2021-05-24 | 2021-05-24 | Multifunctional 10kV live-line work electric insulating cross arm and work method |
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| CN113451975A true CN113451975A (en) | 2021-09-28 |
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| CN202110566624.XA Pending CN113451975A (en) | 2021-05-24 | 2021-05-24 | Multifunctional 10kV live-line work electric insulating cross arm and work method |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7501574B1 (en) * | 2007-10-22 | 2009-03-10 | Haverfield International Incorporated | Conductor support assembly |
| CN202039638U (en) * | 2011-03-25 | 2011-11-16 | 河南省电力公司郑州供电公司 | Lead screw lifting type insulating cross arm |
| CN206180480U (en) * | 2016-11-23 | 2017-05-17 | 芜湖元一航空科技有限公司 | But unmanned aerial vehicle is with rotatable supporting rod |
| CN108123400A (en) * | 2017-12-14 | 2018-06-05 | 国家电网公司 | Insulating bar auxiliary device |
| KR101986085B1 (en) * | 2018-12-06 | 2019-06-07 | (주)한동엔지니어링 | Arm apparatus for steel tower with fixing apparatus of distribution line |
| CN210866999U (en) * | 2019-10-21 | 2020-06-26 | 国网宁夏电力有限公司宁东供电公司 | Vehicle-mounted insulating cross arm of insulating bucket arm vehicle |
| CN211530686U (en) * | 2020-03-04 | 2020-09-18 | 苏州爱建电瓷有限公司 | Suspension type mounted insulator |
| CN212649058U (en) * | 2020-05-18 | 2021-03-02 | 陈石科 | Novel cross arm of angularly adjustable |
| CN112459596A (en) * | 2020-11-05 | 2021-03-09 | 国网山东省电力公司聊城供电公司 | Power transmission and distribution tower erected on same tower and easy to overhaul |
-
2021
- 2021-05-24 CN CN202110566624.XA patent/CN113451975A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7501574B1 (en) * | 2007-10-22 | 2009-03-10 | Haverfield International Incorporated | Conductor support assembly |
| CN202039638U (en) * | 2011-03-25 | 2011-11-16 | 河南省电力公司郑州供电公司 | Lead screw lifting type insulating cross arm |
| CN206180480U (en) * | 2016-11-23 | 2017-05-17 | 芜湖元一航空科技有限公司 | But unmanned aerial vehicle is with rotatable supporting rod |
| CN108123400A (en) * | 2017-12-14 | 2018-06-05 | 国家电网公司 | Insulating bar auxiliary device |
| KR101986085B1 (en) * | 2018-12-06 | 2019-06-07 | (주)한동엔지니어링 | Arm apparatus for steel tower with fixing apparatus of distribution line |
| CN210866999U (en) * | 2019-10-21 | 2020-06-26 | 国网宁夏电力有限公司宁东供电公司 | Vehicle-mounted insulating cross arm of insulating bucket arm vehicle |
| CN211530686U (en) * | 2020-03-04 | 2020-09-18 | 苏州爱建电瓷有限公司 | Suspension type mounted insulator |
| CN212649058U (en) * | 2020-05-18 | 2021-03-02 | 陈石科 | Novel cross arm of angularly adjustable |
| CN112459596A (en) * | 2020-11-05 | 2021-03-09 | 国网山东省电力公司聊城供电公司 | Power transmission and distribution tower erected on same tower and easy to overhaul |
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Application publication date: 20210928 |