CN110265914B - Device and method for entering alternating-current extra-high voltage composite cross arm line equipotential in live line - Google Patents
Device and method for entering alternating-current extra-high voltage composite cross arm line equipotential in live line Download PDFInfo
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- CN110265914B CN110265914B CN201910511540.9A CN201910511540A CN110265914B CN 110265914 B CN110265914 B CN 110265914B CN 201910511540 A CN201910511540 A CN 201910511540A CN 110265914 B CN110265914 B CN 110265914B
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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
- 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 relates to a device and a method for entering an equipotential of an alternating-current extra-high voltage composite cross arm line in a live-line mode. The device and the method for entering the equipotential of the alternating-current extra-high voltage composite cross arm line in a charged manner enable live-line operators of the alternating-current extra-high voltage composite cross arm line to have high safety and convenience in the equipotential entering process, ensure the safe operation of the live-line operation of the alternating-current extra-high voltage composite cross arm line and improve the safety and stability of the alternating-current extra-high voltage composite cross arm line.
Description
Technical Field
The invention relates to the technical field of high-voltage power transmission, in particular to a device and a method for entering an alternating-current extra-high voltage composite cross arm line to have equal potential in a live mode.
Background
The composite material has the advantages of light weight, high strength, corrosion resistance, easy processing, good designability and insulating property, and the like, and is one of ideal materials for building a transmission tower structure. The composite material tower has the advantages of saving steel and reducing the size of the tower head and the width of a corridor; the structure is light, the processing and the forming are easy, and the transportation and the assembly cost are low; the cable is corrosion resistant, high and low temperature resistant, high in strength, low in possibility of being stolen and low in line maintenance cost; because the tower color is adjustable, the tower is non-toxic and can be reused after being scrapped, the 'environmental friendliness' of the line is enhanced. The composite material pole tower has obvious effects in the aspects of construction cost and operation and maintenance, and in recent years, the application of the domestic transmission pole tower structure to the composite material is gradually increased and matured under the leadership of the national power grid company. At present, a plurality of lines with composite material part towers are constructed and operated, and are planned to be applied to test points on an extra-high voltage alternating current line.
Because the alternating current 1000kV composite cross arm tower adopts composite materials and a new structural form, adopts the large-diameter composite insulator to suspend the wire and bear the operating voltage, the electric and mechanical characteristics, the stability, the structural design and the operation and maintenance mode of the tower are obviously different from those of the traditional iron tower, and the tower has new requirements on key technical parameters of live working and live working methods. As a novel line architecture mode (a lead arrangement mode is shown in figure 1), a tower-shaped structure type and a lead arrangement mode of the alternating-current ultrahigh-voltage composite cross arm line are different from those of a conventional alternating-current ultrahigh-voltage line, and due to the fact that the conventional tower-shaped iron tower cross arm is not arranged, hanging points of a conventional carrier cannot be provided, and the hanging basket method, the rope ladder method and the like cannot be adopted for equipotential access. Therefore, an auxiliary tool must be designed according to the structural characteristics of the alternating-current extra-high voltage composite cross arm line, and a safe and reliable equipotential entering method is provided.
Disclosure of Invention
In view of the above, the present invention provides a device and a method for entering an equipotential of an ac ultra-high voltage composite cross arm line in a live-line manner, which enable live-line operators of the ac ultra-high voltage composite cross arm line to have high safety and convenience in entering the equipotential process.
According to the first aspect of the invention, the device for entering the equipotential of the alternating-current extra-high voltage composite cross arm line in a charged mode comprises an auxiliary carrier and an insulating operating rod,
the auxiliary carrying tool comprises a seat plate for the riding of equipotential operating personnel, a pushing hanging point is arranged at the rear part of the seat plate, a roller is arranged below the seat plate and can be rotatably arranged on the seat plate, two pedals are symmetrically arranged on the left side and the right side of the seat plate, pedal connecting plates are arranged between the pedals and the seat plate, and the pedals and the seat plate are connected through the pedal connecting plates;
the front end of the insulating operating rod is provided with a hook, the insulating operating rod is connected with the pushing hanging point through the hook and pushes the auxiliary carrier to move on the upper part of the composite cross arm along the axis direction of the composite cross arm.
Preferably, the upper surface of the seat plate is provided with a gripper for the equipotential operator to grip, and the gripper is arranged at the front part of the upper surface of the seat plate.
Preferably, the circumferential roller surface in the middle of the roller is a concave arc surface, and the radian of the concave arc surface is matched with the convex radian of the composite cross arm.
Preferably, a plurality of rollers are arranged below the seat plate, and the plurality of rollers are arranged in parallel along the front-back direction of the seat plate.
Preferably, the distance between two said footrests is less than the diameter of said composite cross arm.
According to a second aspect of the invention, a method for entering an alternating-current extra-high voltage composite cross arm line equipotential in a live manner is provided, which comprises the following steps:
step one, an auxiliary carrier in the device for entering the alternating-current extra-high voltage composite cross arm line equipotential in a live mode is installed on a composite cross arm where a conductor to be operated is located;
step two, after safety protection measures are taken by equipotential operating personnel, riding on the auxiliary carrier and moving to the position of the phase conductor to be operated along the axis direction of the composite cross arm according to a preset speed;
and step three, stopping moving the equipotential operating personnel at a first preset distance away from the phase conductor to be operated, performing equipotential operation, and then continuously moving the equipotential operating personnel to the phase conductor to be operated for operation.
Preferably, the first step includes:
the equipotential operating personnel and the ground potential operating personnel wear a whole set of shielding clothes on the ground and then climb to the position of the composite cross arm where the phase conductor to be operated on the tower body is located;
and the equipotential operating personnel and/or the earth potential operating personnel install the auxiliary carrier on the composite cross arm where the phase conductor to be operated is located.
Preferably, in the second step, the safety protection measures of the equipotential operating personnel are as follows: the equipotential operating personnel fixedly connect the backup protection rope on the tower body and sleeve the personal anti-falling safety belt on the composite cross arm.
Preferably, in the third step, when the equipotential operator performs an equipotential operation, the potential transfer rod contacts the phase conductor to be operated to perform potential transfer, so as to enter the equipotential state.
Preferably, in the process of entering and exiting the equipotential by an equipotential operator, the sum of the distance from the equipotential operator to the tower body and the distance from the equipotential operator to a phase conductor to be operated is greater than or equal to 7.0m.
The invention has the beneficial effects that: the invention provides a device and a method for entering an equipotential of an alternating-current extra-high voltage composite cross arm line in a charged manner, wherein equipotential operators can safely and reliably enter a conductor of a phase to be operated along a composite cross arm to perform operation by using the device, so that the problem that the equipotential operators cannot safely enter the conductor to perform live operation due to the fact that conventional carrying tools cannot be provided for hanging points because conventional tower-shaped iron tower cross arms are not arranged in the alternating-current extra-high voltage composite cross arm line in the prior art is solved, the alternating-current extra-high voltage composite cross arm line live operation personnel have high safety and convenience in the equipotential entering process, the safety in the alternating-current extra-high voltage composite cross arm line live operation is ensured, and the safety stability of the alternating-current extra-high voltage composite cross arm line is improved.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 shows a schematic structural diagram of an alternating-current extra-high voltage composite cross arm line transmission tower.
Fig. 2 and fig. 3 are schematic perspective views of auxiliary vehicles in the apparatus for entering ac ultra-high voltage composite cross arm line equipotential in an electrified manner, which are observed in different directions according to the embodiment of the present invention.
Fig. 4 shows a schematic diagram of an auxiliary vehicle mounted on a composite cross arm in an apparatus for entering an equipotential of an ac ultra-high voltage composite cross arm line in a live state, according to an embodiment of the present invention.
Fig. 5 is a schematic diagram illustrating the operation and use of the device for live-line access to equipotential of an alternating-current extra-high voltage composite cross arm line provided by the embodiment of the invention.
In the figure: the tower body 1, the composite cross arm 2, the auxiliary carrier 3, the seat plate 31, the hand grips 32, the pushing hanging points 33, the roller 34, the pedals 35, the blocking edges 351, the pedal connecting plates 36, the insulating operating rod 4, the phase conductor 5 to be operated, the equipotential operator 6 and the ground potential operator 7.
Detailed Description
Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not drawn to scale.
A device for entering an alternating-current extra-high voltage composite cross arm line equipotential in a live manner comprises an auxiliary carrier 3 and an insulating operating rod 4, and referring to fig. 2 and 3, fig. 2 and 3 are respectively schematic structural diagrams of the auxiliary carrier when the auxiliary carrier is observed in different directions. The auxiliary carrying tool 3 comprises a seat plate 31, a pushing hanging point 33, a roller 34 and pedals 35, the seat plate 31 is used for the equipotential operating personnel 6 to ride, the pushing hanging point 33 is arranged at the rear part of the seat plate 31, the roller 34 is arranged below the seat plate 31, the roller 34 is rotatably connected onto the seat plate 31, the left side and the right side of the seat plate 31 are symmetrically provided with the two pedals 35, the two pedals 35 are arranged below the outer side of the seat plate 31, pedal connecting plates 36 are arranged between the pedals 35 and the seat plate 31, and the pedals 35 are connected with the seat plate 31 through the pedal connecting plates 36. In order to make the equipotential operating personnel 6 comfortable when riding, the connecting part of the seat plate 31 and the pedal connecting plate 36 is rounded. In addition, the edge of the outer side of the step 35 is provided with a rib 351 protruding upwards, so that the step can be prevented from sliding out of the step 35, and the safety of the equipotential operating personnel 6 during riding is improved. The upper surface of the seat plate 31 is further provided with a gripper 32, the gripper 32 is arranged at the front part of the upper surface of the seat plate 31, and the gripper 32 is used for gripping when the equipotential operator 6 rides on the seat plate 31, so that the riding safety is improved. In the above description, the direction is defined as: when the equipotential operating personnel ride on the seat plate, the direction that the equipotential operating personnel face is front, the opposite direction is back, the left-hand side of the equipotential operating personnel is left, and the right-hand side is right.
The front end of the insulating operating rod 4 is provided with a hook, the insulating operating rod 4 is connected with the pushing hanging point 33 through the hook, and the auxiliary carrier 3 is pushed to move towards the direction of the phase conductor 5 to be operated on the upper part of the composite cross arm 2 along the axial direction of the composite cross arm 2. Referring to fig. 5, fig. 5 is a schematic diagram illustrating operation and use of the device for entering the equipotential of the alternating-current extra-high voltage composite cross arm line in an electrified manner.
Referring to fig. 3, a mandrel is provided at the center of the drum 34 of the auxiliary vehicle 3, and a support plate is provided at the lower portion of the seat plate 31 at a predetermined distance, to which the drum 34 is coupled via the mandrel. The circumferential roller surface in the middle of the roller 34 is a concave arc surface, and the radian of the concave arc surface is matched with the convex radian of the composite cross arm 2. The structural design of the roller 34 can greatly increase the contact area between the roller 34 and the composite cross arm 2, improve the friction force during contact and increase the stability and safety of the auxiliary carrier 3 moving on the composite cross arm 2.
In order to further improve the stability of the auxiliary vehicle 3 when moving on the composite cross arm 2, a plurality of rollers 34 are provided below the seat plate 31 of the auxiliary vehicle 3, and the plurality of rollers 34 are arranged in parallel in the front-rear direction of the seat plate 31. The number of the rollers 34 may be determined according to actual conditions, and the embodiment is not limited in any way. In the present embodiment, three rollers 34 are provided below the seat plate 31.
The rubber layer is further provided on the outer surface of the roller 34, and the rubber layer on the outer surface of the roller 34 can increase the friction force when the roller 34 rolls on the composite cross arm 2, thereby further improving the safety when the auxiliary vehicle 3 moves on the composite cross arm 2. In this embodiment, the rubber layer is coated on the outer surface of the drum 34 by vulcanization and curing. Furthermore, the surface of the rubber layer is also provided with anti-slip lines, so that the friction force of the roller 34 when rolling on the composite cross arm 2 can be better increased.
Referring to fig. 4, fig. 4 is a schematic view of an auxiliary vehicle as mounted on a composite cross-arm. The composite cross arm 2 is integrally cylindrical, the surface of the composite cross arm 2 is of a circumferential protruding structure which is uniformly distributed, the auxiliary carrier 3 mainly depends on the cylindrical roller 34 to roll and advance along the surface of the composite cross arm 2, the diameter of the roller 34 is designed according to the structure of the composite cross arm 2, the roller 34 is guaranteed to be smooth in the rolling and advancing process, meanwhile, the distance between the two pedals 35 is smaller than the diameter of the composite cross arm 2, preferably, when the auxiliary carrier 3 is installed on the composite cross arm 2, the two pedals 35 are tangent to the outer surface of the composite cross arm 2, and the auxiliary carrier 3 can be enabled to well move on the composite cross arm 2.
The method for entering the equipotential of the alternating-current extra-high voltage composite cross arm 2 line in a live-line manner comprises the following steps:
step one, an auxiliary carrier in the device for entering the alternating-current extra-high voltage composite cross arm line equipotential in an electrified way is arranged on the composite cross arm where the conductor of the phase to be operated is positioned.
Specifically, an equipotential operator 6 and a ground potential operator 7 wear a complete set of shielding clothes on the ground, carry the above-mentioned tool with live line entering the equipotential of the alternating-current extra-high voltage composite cross arm 2 line, and climb from the ground to the position of the composite cross arm 2 where the phase conductor 5 to be operated is located on the tower body 1. The equipotential operator 6 and/or the earth potential operator 7 installs the auxiliary vehicle 3 on the composite cross arm 2 where the phase conductor 5 to be operated is located, the auxiliary vehicle 3 is installed on the upper part of the composite cross arm 2, one end of the auxiliary vehicle 3 where the pushing hanging point 33 is located faces the tower body 1, and one end of the gripper 32 where the gripper is located faces the phase conductor 5 to be operated.
And step two, after safety protection measures are taken by the equipotential operating personnel, riding on the auxiliary delivery tool and moving to the phase conductor to be operated along the axis direction of the composite cross arm according to a preset speed.
Specifically, the safety protection measures of the equipotential operating personnel 6 are as follows: the equipotential operating personnel 6 fix the backup protection rope at the proper position of the tower body 1 and sleeve the personal anti-falling safety belt on the composite cross arm 2. After confirming that the safety protection measures of the equipotential operating personnel 6 are correct, the equipotential operating personnel 6 enter the composite cross arm 2 and ride on the auxiliary carrier 3, the grab handle 32 is held by both hands, and both feet step on the pedal 35. The ground potential operator 7 stands on the position of the composite cross arm 2 where the to-be-operated phase is guided on the tower body 1, a hook of the insulating operating rod 4 is well connected with a pushing hanging point 33 of the auxiliary carrier 3, after the ground potential operator 7 confirms the position with the equipotential operator 6, the ground potential operator 7 pushes the auxiliary carrier 3 to move towards the to-be-operated phase conductor 5 along the axial direction of the composite cross arm 2 according to a preset speed through the insulating operating rod 4, the moving process keeps going forward at a constant speed as far as possible, and over-fast or sudden stop is avoided, so that the safety of the equipotential operator 6 riding on the auxiliary carrier 3 is guaranteed.
And step three, stopping the movement of the equipotential operating personnel at a first preset distance from the phase conductor to be operated, performing equipotential operation, and then continuing to move to the phase conductor to be operated for operation.
Specifically, when the equipotential operator 6 moves to a first preset distance from the phase conductor 5 to be operated, the equipotential operator 6 notifies the earth potential operator 7 to stop pushing the auxiliary carrier 3, and the equipotential operator 6 contacts the phase conductor 5 to be operated through the potential transfer rod to perform potential transfer and enters an equipotential. And then the ground potential operator 7 is informed to continuously push the auxiliary carrier 3 to continuously move towards the direction of the phase conductor 5 to be operated until the equipotential operator 6 completely enters the position of the phase conductor 5 to be operated, and the equipotential operator 6 climbs onto the hardware fitting or the phase conductor 5 to be operated from the auxiliary carrier 3 to perform operation. As shown in fig. 3, in the equipotential entering and exiting process, the sum of the distance S1 from the equipotential operating staff 6 to the tower body 1 and the distance S2 from the equipotential operating staff 6 to the phase conductor 5 to be operated should be ensured to be not less than 7.0m (excluding the human occupied space), and this condition can ensure that the equipotential operating staff 6 does not generate operation impact discharge in the equipotential entering and exiting process, and can ensure the personal safety of the equipotential operating staff 6.
The first preset distance is 0.4-0.6m, and in this embodiment, the first preset distance is selected to be 0.5m, that is, when the equipotential operator 6 moves to a position 0.5m away from the phase conductor to be operated, the equipotential operator 6 contacts the phase conductor to be operated 5 through the potential transfer rod to perform potential transfer, and enters an equipotential. The front end of the potential transfer rod is provided with a hook, the rear end of the potential transfer rod is provided with an insulated conductor, the hook at the front end of the potential transfer rod is used for hooking the conductor 5 of the phase to be operated when the equipotential operator 6 carries out equipotential to realize the contact between the potential transfer rod and the conductor 5 of the phase to be operated, and the equipotential operator 6 well connects the potential transfer rod with the whole set of worn shielding clothes before entering the equipotential process.
The invention provides a device and a method for entering an equipotential of an alternating-current extra-high voltage composite cross arm line in a charged manner, wherein equipotential operators can safely and reliably enter a conductor of a phase to be operated along a composite cross arm to perform operation by using the device, so that the problem that the equipotential operators cannot safely enter the conductor to perform live operation due to the fact that conventional carrying tools cannot be provided for hanging points because conventional tower-shaped iron tower cross arms are not arranged in the alternating-current extra-high voltage composite cross arm line in the prior art is solved, the alternating-current extra-high voltage composite cross arm line live operation personnel have high safety and convenience in the equipotential entering process, the safety in the alternating-current extra-high voltage composite cross arm line live operation is ensured, and the safety stability of the alternating-current extra-high voltage composite cross arm line is improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (5)
1. A method for entering alternating current extra-high voltage composite cross arm line equipotential in a live mode is characterized by comprising the following steps:
step one, mounting an auxiliary carrier on a composite cross arm where a phase conductor to be operated is located;
the auxiliary carrying tool comprises a seat plate for riding equipotential operators, wherein the upper surface of the seat plate is provided with a gripper for the equipotential operators to grasp, the gripper is arranged at the front part of the upper surface of the seat plate, the rear part of the seat plate is provided with a pushing hanging point, a roller is arranged below the seat plate, the roller can be rotatably arranged on the seat plate, the circumferential roller surface at the middle part of the roller is a concave circular arc surface, the radian of the concave circular arc surface is matched with the convex radian of the composite cross arm, a plurality of rollers are arranged below the seat plate, the plurality of rollers are arranged in parallel along the front-back direction of the seat plate, two pedals are symmetrically arranged at the left side and the right side of the seat plate, pedal connecting plates are arranged between the pedals and the seat plate, and the pedals are connected with the seat plate through the pedal connecting plates; the distance between the two pedals is smaller than the diameter of the composite cross arm;
step two, after safety protection measures are made by the equipotential operating personnel, riding on the auxiliary carrying tool and moving to the position of the phase conductor to be operated along the axis direction of the composite cross arm according to a preset speed;
in the step, after confirming that the safety protection measures of the equipotential operating personnel are correct, the equipotential operating personnel ride on the auxiliary carrier, hold the tongs with both hands, and step on the pedals with both feet; a ground potential operator stands at the position of the composite cross arm where the phase conductor to be operated on the tower body is located, a hook at the front end of an insulating operating rod is well connected with a pushing hanging point of an auxiliary carrier, after the ground potential operator confirms with an equipotential operator, the ground potential operator pushes the auxiliary carrier to move to the phase conductor to be operated along the axial direction of the composite cross arm at a preset speed through the insulating operating rod, and the moving process keeps constant-speed forward as far as possible;
and step three, stopping the movement of the equipotential operating personnel at a first preset distance from the phase conductor to be operated, performing equipotential operation, and then continuing to move to the phase conductor to be operated for operation.
2. The method for entering the equipotential of the AC extra-high voltage composite cross arm line according to claim 1, wherein the first step comprises:
the equipotential operating personnel and the ground potential operating personnel wear the whole set of shielding clothes on the ground and then climb to the position of the composite cross arm where the phase conductor to be operated on the tower body is located;
and the equipotential operating personnel and/or the earth potential operating personnel install the auxiliary carrier on the composite cross arm where the phase conductor to be operated is located.
3. The method for entering the equipotential of the alternating-current extra-high voltage composite cross arm line according to claim 1, wherein in the second step, the safety protection measures of equipotential operating personnel are as follows: the equipotential operating personnel fixedly connect the backup protection rope on the tower body and sleeve the personal anti-falling safety belt on the composite cross arm.
4. The method for entering the equipotential of the alternating-current extra-high voltage composite cross arm line according to claim 1, wherein in the third step, when an equipotential operator performs equipotential operation, the potential transfer rod contacts a phase conductor to be operated to perform potential transfer, so that the phase conductor enters the equipotential.
5. The method for entering the equipotential of the alternating-current extra-high voltage composite cross arm line according to claim 1, wherein the sum of the distance from the equipotential operator to the tower body and the distance from the equipotential operator to a phase conductor to be operated is greater than or equal to 7.0m in the process of entering and exiting the equipotential.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910511540.9A CN110265914B (en) | 2019-06-13 | 2019-06-13 | Device and method for entering alternating-current extra-high voltage composite cross arm line equipotential in live line |
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| CN201910511540.9A CN110265914B (en) | 2019-06-13 | 2019-06-13 | Device and method for entering alternating-current extra-high voltage composite cross arm line equipotential in live line |
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| CN110783851B (en) * | 2019-11-08 | 2022-03-25 | 国网青海省电力公司海西供电公司 | Power transmission line outlet device |
| CN111668747B (en) * | 2020-05-08 | 2022-09-20 | 中国电力科学研究院有限公司 | Device and method for entering and exiting alternating-current extra-high voltage composite cross arm live working area |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623926A (en) * | 2012-03-29 | 2012-08-01 | 中国南方电网有限责任公司超高压输电公司百色局 | Distant equipotential tackle and method for realizing charged equipotential access by using same |
| CN202550399U (en) * | 2012-03-29 | 2012-11-21 | 中国南方电网有限责任公司超高压输电公司百色局 | Distant equipotential tackle |
| CN204738733U (en) * | 2015-06-02 | 2015-11-04 | 国家电网公司 | Laborsaving insulating slide |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2347910B (en) * | 1999-03-17 | 2002-09-18 | Bicc Plc | Access trolley |
| CN104821516B (en) * | 2015-05-27 | 2016-05-04 | 国家电网公司 | A kind of ultra-high-tension power transmission line enters electric field Equipotential live working method |
| CN104979776A (en) * | 2015-07-10 | 2015-10-14 | 中国电力科学研究院 | Method for entering equipotential level for tension support of UHV transmission line |
| CN108155597A (en) * | 2016-12-05 | 2018-06-12 | 岳池巨力创新科技有限公司 | Electrically propelled chair on line |
| CN206353674U (en) * | 2016-12-22 | 2017-07-25 | 国网河北省电力公司衡水供电分公司 | Vertical double bundle conductor outlet job platform |
| CN109802329A (en) * | 2019-01-31 | 2019-05-24 | 中国电力科学研究院有限公司 | Electrification enters 750 kilovolts of quadri-circuit lines on the same tower road equipotential methods |
-
2019
- 2019-06-13 CN CN201910511540.9A patent/CN110265914B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623926A (en) * | 2012-03-29 | 2012-08-01 | 中国南方电网有限责任公司超高压输电公司百色局 | Distant equipotential tackle and method for realizing charged equipotential access by using same |
| CN202550399U (en) * | 2012-03-29 | 2012-11-21 | 中国南方电网有限责任公司超高压输电公司百色局 | Distant equipotential tackle |
| CN204738733U (en) * | 2015-06-02 | 2015-11-04 | 国家电网公司 | Laborsaving insulating slide |
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