CN116142994A - Hoisting device and method for installing line switch - Google Patents

Hoisting device and method for installing line switch Download PDF

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Publication number
CN116142994A
CN116142994A CN202211731379.4A CN202211731379A CN116142994A CN 116142994 A CN116142994 A CN 116142994A CN 202211731379 A CN202211731379 A CN 202211731379A CN 116142994 A CN116142994 A CN 116142994A
Authority
CN
China
Prior art keywords
bracket
line switch
hanging
fixed
switch
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.)
Pending
Application number
CN202211731379.4A
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Chinese (zh)
Inventor
李孟东
梁一川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Beijing Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Beijing Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Beijing Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN202211731379.4A priority Critical patent/CN116142994A/en
Publication of CN116142994A publication Critical patent/CN116142994A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/20Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures
    • B66C23/203Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures with supporting couples provided by posts, e.g. scaffolding, trees or masts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/18Control systems or devices
    • B66C13/40Applications of devices for transmitting control pulses; Applications of remote control devices
    • B66C13/44Electrical transmitters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/18Control systems or devices
    • B66C13/50Applications of limit circuits or of limit-switch arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62Constructional features or details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88Safety gear
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B3/00Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Electric Cable Installation (AREA)

Abstract

The invention belongs to the technical field of electrical equipment, and particularly discloses a circuit switch installation lifting device and a circuit switch installation lifting method, wherein the circuit switch installation lifting device comprises the following steps: the device comprises an electric pole, an upper hanging bracket, a hanging hook, an insulating hanging rope, a lower hanging bracket and a winch; the upper hanging frame and the lower hanging frame are both fixed on the electric pole, one end of the insulating hanging rope is connected with one end of the lifting hook through the upper hanging frame and the lower hanging frame, and the other end of the lifting hook is connected with the circuit switch; the other end of the insulating lifting rope is connected with a winch; the line switch after hoisting is arranged on the line switch fixing bracket. The invention installs the hanging bracket on the pole, connects the windlass and the line switch through the insulating hanging rope, controls the height of the switch line to the hanging position through the windlass, utilizes the bearing force of the pole, has no limit requirement on the surrounding environment of the pole, is suitable for adverse environments such as narrow, low ground hardness and the like, has simple operation, does not need other large auxiliary equipment, is simple and convenient to adjust, can effectively improve the working efficiency, is suitable for different pole types, and is used for hanging various types of line switches.

Description

Hoisting device and method for installing line switch
Technical Field
The invention belongs to the technical field of electrical equipment, and particularly relates to a circuit switch installation lifting device and a circuit switch installation lifting method.
Background
In the current construction and maintenance process of the 10kV power distribution network overhead line, the new installation or replacement of various line switches is quite common, and the number of the new installation switches is increased along with the continuous improvement of the reliability requirement of the power distribution network. In the new installation process, in order to ensure the electricity consumption of users, the installation work of the line switch is generally carried out by adopting an uninterrupted or partially uninterrupted operation mode. Under the operation mode of uninterrupted power supply or partial power supply, the switch and the electrified equipment are often too close to each other, and the enough safety distance required by the on-site use of the crane in hoisting can not be met. In addition, the existing pole site selection is generally selected at a remote position which does not affect traffic or urban capacity, and the existing pole site selection does not have space conditions for a crane to enter in many cases, so that many inconveniences are caused for guaranteeing the reliability transformation of the power distribution network.
In the prior art, a switch hoisting device special for an overhead line of a power distribution network does not exist. In the operation process of a 10kV power distribution network, the installation of various circuit switches is always an operation project with high safety risk, high operation difficulty and complex operation flow. Since the line switch body is heavy, it is generally necessary to use a crane vehicle for lifting and mounting during operation. Because the equipment on the 10kV column is very compact, the distance between the line switch and the overhead line is relatively short, and practical problems that a crane vehicle cannot be driven in a construction site, the hoisting safety distance is insufficient, the operation difficulty is relatively high and the like can occur. Meanwhile, due to the lack of a special tool for lifting a switch, accidents can occur in the lifting process, equipment damage and casualties are caused, and serious operation potential safety hazards exist.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a hoisting device and a hoisting method for installing a circuit switch, so as to solve the problems of high operation difficulty and complex operation flow when the circuit switch is installed by using a crane.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
the present invention provides in a first aspect a line switch mounting and hoisting device comprising:
the device comprises an upper hanging bracket, a hanging hook, an insulating hanging rope, a lower hanging bracket and a winch;
the upper hanging frame and the lower hanging frame are both fixed on the electric pole, one end of the insulating hanging rope is connected with one end of the lifting hook through the upper hanging frame and the lower hanging frame, and the other end of the lifting hook is connected with the circuit switch; the other end of the insulating lifting rope is connected with a winch;
the line switch after hoisting is arranged on the line switch fixing bracket.
Further, the upper hanging bracket comprises an insulating baffle, a first fixed anchor ear, a first bracket and a second fixed anchor ear; the insulating baffle is fixed at the top of the first bracket and connected with the first fixed anchor ear, and the first fixed anchor ear is fixed on the electric pole through a bolt; the first support includes dead lever and horizontal plate, and the one end and the first fixed staple bolt of first support dead lever link to each other, and the other end of first support dead lever links to each other with the horizontal plate one end of first support, and the horizontal plate other end of first support is fixed on the pole through the fixed staple bolt of second.
Further, the upper hanging bracket further comprises an inner pulley, an outer pulley and a limit switch; the inner pulley and the outer pulley are fixed on a horizontal plate of the first bracket, the inner pulley is arranged at a position close to the electric pole, and the outer pulley is fixed at a position far away from the electric pole; the limit switch is installed on the horizontal plate of first support.
Further, the limit switch is a contact type mechanical switch or a non-contact type infrared contact switch.
Further, the lower hanging bracket comprises a second bracket, a third fixed anchor ear and a fixed bolt; the second support links to each other with the fixed staple bolt of third, and the fixed staple bolt of third passes through fixing bolt to be fixed on the pole.
Further, the lower hanging bracket further comprises a pulley; the pulley is horizontally fixed on the second bracket and aligned with the inner pulley of the upper hanger.
Further, one end of the insulating lifting rope is connected with one end of the lifting hook through the pulley, the inner pulley and the outer pulley.
Further, the winch is connected with the limit switch through wireless signals.
Further, the limit switch is connected with the line switch through wireless signals.
In another aspect, the present invention provides a method for installing and hoisting a line switch, based on any one of the above-mentioned line switch installation hoisting device, including:
firstly, fixing an upper hanging bracket at the upper end of an electric pole, and adjusting the position of a lower hanging bracket to be aligned with the upper hanging bracket, wherein the lower hanging bracket and a winch are basically positioned on the same horizontal plane;
hoisting a line switch through a remote control winch, and manually controlling the winch to stop hoisting after detecting that the line switch is hoisted in place;
after the hoisting is completed, the line switch is arranged on the line switch fixing bracket, and the hoisting device is arranged after the line switch is removed.
The invention has at least the following beneficial effects:
1. the invention installs the hanging bracket on the pole, connects the windlass and the line switch through the insulating hanging rope, controls the height of the switch line to the hanging position through the windlass, utilizes the bearing force of the pole, has no limit requirement on the surrounding environment of the pole, is suitable for adverse environments such as narrow, low ground hardness and the like, has simple operation, does not need other large auxiliary equipment, is simple and convenient to adjust, can effectively improve the working efficiency, is suitable for different pole types, and is used for hanging various types of line switches.
2. The winch has 450kg lifting capacity and meets the lifting requirements of various circuit switches; the insulating baffle is provided with insulating isolation measures, so that the hoisting work of the line switch can be completed under the condition of near electricity or electrification; if accidents occur, the insulating baffle plate can also prevent the insulating lifting rope from lifting up to touch the main lead to cause short circuit or personal electric shock. The height limiting device is arranged, so that the line switch can be accurately hung to a designated position, and the problem that a lower operator cannot accurately position due to the angle problem is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a front view of a circuit switch mounting and hoisting device of the present invention;
FIG. 2 is an oblique view of a circuit switch mounting and hoisting device of the invention;
FIG. 3 is a front view of a process of installing a hoisting device for a circuit switch to hoist the switch;
FIG. 4 is an oblique view of a hoisting switch process of the line switch installation hoisting device of the invention;
fig. 5 is an oblique view of the circuit switch mounting hoisting device of the invention after hoisting the switch and mounting other equipment.
Reference numerals: 101. an electric pole; 102. a bolt; 103. a cross arm; 104. an insulator; 105. a wire clip; 106. a wire; 107. a line switch; 108. a line switch fixing bracket; 109. a transformer; 110. a first fixing bracket; 112. FTU; 111. a second fixing bracket; 201. a hanging bracket is arranged; 202. a lifting hook; 203. an insulating hanging rope; 204. a lower hanging bracket; 205. a hoist; 301. an insulating baffle; 302. the first fixing hoop; 303. a first bracket; 304. an inner pulley; 305. an outer pulley; 306. the second fixing hoop; 307. a limit switch; 308. a third fixed anchor ear; 309. a second bracket; 310. a fixing bolt; 311. and (3) a pulley.
Detailed Description
The invention will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The following detailed description is exemplary and is intended to provide further details of the invention. Unless defined otherwise, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention.
Example 1
As shown in fig. 1 to 5, a line switch mounting and lifting device includes:
an upper hanger 201, a hanger 202, an insulating hanger rope 203, a lower hanger 204 and a hoist 205;
the upper hanging frame 201 and the lower hanging frame 204 are both fixed on the electric pole 101, one end of the insulating hanging rope 203 is connected with one end of the hanging hook 202 through the upper hanging frame 201 and the lower hanging frame 204, and the other end of the hanging hook 202 is connected with the line switch 107; the other end of the insulating lifting rope 203 is connected with a winch 205;
the upper hanger 201 includes: the insulation baffle 301, the first fixed anchor ear 302, the first bracket 303, the second fixed anchor ear 306, the inner pulley 304, the outer pulley 305 and the limit switch 307; the insulating baffle 301 is fixed at the top of the first bracket 303 and is connected with the first fixed anchor ear 302, the first fixed anchor ear 302 is fixed on the electric pole 101 through a bolt, and the diameter of the first fixed anchor ear 302 is adjustable, so that the fixing requirements of electric poles with different diameters can be met; the first bracket 303 comprises an inclined rod and a horizontal plate, one end of the inclined rod of the first bracket 303 is connected with the first fixed hoop 302, the other end of the inclined rod of the first bracket 303 is connected with one end of the horizontal plate of the first bracket 303, and the other end of the horizontal plate of the first bracket 303 is fixed on the electric pole 106 through the second fixed hoop 306; the inner pulley 304 and the outer pulley 305 are fixed on a horizontal plate of the first bracket 303, the inner pulley 304 is arranged at a position close to the electric pole 101, the outer pulley 305 is fixed at a position far away from the electric pole 101, and the requirement of hoisting line switches 107 with different sizes can be met by adjusting the installation position of the outer pulley 305; the limit switch 307 is arranged on the horizontal plate of the first bracket 303, the limit switch 307 is a contact type mechanical switch or a non-contact type infrared contact switch, the limit switch 307 is connected with the line switch 107 through a wireless signal, and when the line switch 107 is detected to be hoisted to a preset position, the hoisting machine 205 is controlled to automatically stop hoisting; the insulating barrier 301 insulates the upper layer live wire 106. The insulating barrier 301 can also prevent the insulating lifting rope 203 from lifting up to touch the main wire to cause short circuit or personal electric shock if accidents occur.
The limit switch 307 is a limit and safety switch, and the specific stop hoisting and placement positions of the line switch are determined by operators.
The lower hanger 204 includes a second bracket 309, a third fixed anchor ear 308, a fixing bolt 310, and a pulley 311; the second bracket 309 is connected with a third fixed anchor ear 308, the third fixed anchor ear 308 is fixed on the electric pole 101 through a fixed bolt 310, and the diameter of the third fixed anchor ear 308 is adjustable, so that the fixed requirement of electric poles with different diameters can be met; the pulley 311 is horizontally fixed to the second bracket 309 and aligned with the inner pulley 304 of the upper hanger 201.
One end of the insulating lifting rope 203 is connected with one end of the lifting hook 202 through a pulley 311, an inner pulley 304 and an outer pulley 305, and the other end of the lifting hook 202 is connected with the line switch 107; the hooks 202 may be swaged hooks or laminated hooks, but must be provided with safety catches to prevent the line switch 107 from slipping during lifting. The other end of the insulating lifting rope 203 is connected with a winch 205, the winch 205 is connected with a limit switch 307 through wireless signals, the winch 205 has 450kg lifting capacity, and two power supply modes of a storage battery and a vehicle-mounted power supply are provided; the remote control lifting and limiting switch 307 is matched with the limit switch to realize automatic limit protection.
Example 2
A line switch installation hoisting method comprises the following steps:
first, fixing an upper hanger 201 on the upper end of an electric pole 101, and adjusting the position of a lower hanger 204 to align a pulley 311 of the lower hanger 204 with an inner pulley 304 of the upper hanger 201, wherein the lower hanger 204 and a winch 205 are basically on the same horizontal plane;
hoisting the line switch 107 by a remote control winch 205, and manually controlling the winch 205 to stop hoisting after the limit switch 307 detects that the line switch 107 is hoisted in place;
after the hoisting is completed, the line switch 107 is mounted on the line switch fixing bracket 108, and the hoisting device is mounted after the line switch is removed.
It will be appreciated by those skilled in the art that the present invention can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the invention or equivalents thereto are intended to be embraced therein.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.

Claims (10)

1. A circuit switch installs hoist device, its characterized in that includes:
an upper hanging bracket (201), a hanging hook (202), an insulating hanging rope (203), a lower hanging bracket (204) and a winch (205);
the upper hanging frame (201) and the lower hanging frame (204) are both fixed on the electric pole (101), one end of the insulating hanging rope (203) is connected with one end of the lifting hook (202) through the upper hanging frame (201) and the lower hanging frame (204), and the other end of the lifting hook (202) is connected with the line switch (107); the other end of the insulating lifting rope (203) is connected with a winch (205);
the line switch (107) after hoisting is arranged on the line switch fixing bracket (108).
2. The line switch mounting and lifting device according to claim 1, wherein the upper hanger (201) comprises an insulating baffle (301), a first fixed anchor ear (302), a first bracket (303) and a second fixed anchor ear (306); the insulating baffle (301) is fixed at the top of the first bracket (303) and connected with the first fixed anchor ear (302), and the first fixed anchor ear (302) is fixed on the electric pole (101); the first bracket (303) comprises an inclined rod and a horizontal plate, one end of the inclined rod of the first bracket (303) is connected with the first fixed hoop (302), the other end of the inclined rod of the first bracket (303) is connected with one end of the horizontal plate of the first bracket (303), and the other end of the horizontal plate of the first bracket (303) is fixed on the electric pole (106) through the second fixed hoop (306).
3. A line switch mounting and lifting device according to claim 2, characterized in that the upper hanger (201) further comprises an inner pulley (304), an outer pulley (305) and a limit switch (307); the inner pulley (304) and the outer pulley (305) are fixed on a horizontal plate of the first bracket (303), the inner pulley (304) is arranged at a position close to the electric pole (101), and the outer pulley (305) is fixed at a position far away from the electric pole (101); the limit switch (307) is mounted on the horizontal plate of the first bracket (303).
4. A line switch mounting hoist as claimed in claim 3, characterized in that the limit switch (307) is a contact type mechanical switch or a non-contact type infrared proximity switch.
5. A line switch mounting and lifting device according to claim 3, wherein the lower hanger (204) comprises a second bracket (309), a third fixing anchor (308) and a fixing bolt (310); the second bracket (309) is connected with a third fixed anchor ear (308), and the third fixed anchor ear (308) is fixed on the electric pole (101) through a fixed bolt (310).
6. A line switch mounting and lifting device according to claim 5, wherein the lower hanger (204) further comprises a pulley (311); the pulley (311) is horizontally fixed to the second bracket (309) in alignment with the inner pulley (304) of the upper hanger (201).
7. The line switch mounting and lifting device according to claim 6, wherein one end of the insulating lifting rope (203) is connected with one end of the lifting hook (202) through a pulley (311), an inner pulley (304) and an outer pulley (305).
8. A line switch mounting hoist as claimed in claim 3, characterized in that the hoist (205) is connected to the limit switch (307) by wireless signals.
9. A line switch mounting and lifting device according to claim 3, characterized in that the limit switch (307) is connected to the line switch (107) by means of a wireless signal.
10. A line switch installation hoisting method, characterized in that it is based on a line switch installation hoisting device according to any one of claims 1-9, comprising:
firstly, fixing an upper hanging bracket (201) at the upper end of an electric pole (101), and adjusting the position of a lower hanging bracket (204) to be aligned with the upper hanging bracket (201), wherein the lower hanging bracket (204) and a winch (205) are basically positioned on the same horizontal plane;
hoisting a line switch (107) through a remote control winch (205), and manually controlling the winch (205) to stop hoisting after detecting that the line switch (107) is hoisted in place;
after the hoisting is completed, the line switch (107) is arranged on the line switch fixing bracket (108), and the hoisting device is arranged after the line switch is removed.
CN202211731379.4A 2022-12-30 2022-12-30 Hoisting device and method for installing line switch Pending CN116142994A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211731379.4A CN116142994A (en) 2022-12-30 2022-12-30 Hoisting device and method for installing line switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211731379.4A CN116142994A (en) 2022-12-30 2022-12-30 Hoisting device and method for installing line switch

Publications (1)

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CN116142994A true CN116142994A (en) 2023-05-23

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104022459A (en) * 2014-05-30 2014-09-03 国家电网公司 10 KV distribution line pole-mounted wire suspension device
CN208577368U (en) * 2018-06-28 2019-03-05 国网江西省电力有限公司萍乡市湘东区供电分公司 Quickly dismantled on-pole switch installs boom hoisting
CN110790172A (en) * 2019-10-13 2020-02-14 国网山东省电力公司宁阳县供电公司 Portable pole-mounted switch handling device
CN112850538A (en) * 2021-01-13 2021-05-28 国网山东省电力公司宁津县供电公司 Conductor lifter on distribution line pole
CN113998603A (en) * 2021-10-22 2022-02-01 国网浙江省电力有限公司台州市路桥区供电公司 Hoisting tool for power line construction
CN216774076U (en) * 2022-01-13 2022-06-17 国网安徽省电力有限公司阜阳供电公司 Electrified mounting system of 10 kilovolt distribution lines post switch

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104022459A (en) * 2014-05-30 2014-09-03 国家电网公司 10 KV distribution line pole-mounted wire suspension device
CN208577368U (en) * 2018-06-28 2019-03-05 国网江西省电力有限公司萍乡市湘东区供电分公司 Quickly dismantled on-pole switch installs boom hoisting
CN110790172A (en) * 2019-10-13 2020-02-14 国网山东省电力公司宁阳县供电公司 Portable pole-mounted switch handling device
CN112850538A (en) * 2021-01-13 2021-05-28 国网山东省电力公司宁津县供电公司 Conductor lifter on distribution line pole
CN113998603A (en) * 2021-10-22 2022-02-01 国网浙江省电力有限公司台州市路桥区供电公司 Hoisting tool for power line construction
CN216774076U (en) * 2022-01-13 2022-06-17 国网安徽省电力有限公司阜阳供电公司 Electrified mounting system of 10 kilovolt distribution lines post switch

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