CN209844409U - Hoisting frame for power transmission line - Google Patents

Hoisting frame for power transmission line Download PDF

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Publication number
CN209844409U
CN209844409U CN201920889253.7U CN201920889253U CN209844409U CN 209844409 U CN209844409 U CN 209844409U CN 201920889253 U CN201920889253 U CN 201920889253U CN 209844409 U CN209844409 U CN 209844409U
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CN
China
Prior art keywords
pole
transmission line
hoisting frame
power transmission
fixed
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.)
Active
Application number
CN201920889253.7U
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Chinese (zh)
Inventor
李林卿
王勇焕
艾福庆
张晓勇
邹仁彦
刘国明
牛秋琪
张华旭
李晓颖
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.)
China Petroleum and Chemical Corp
China Petrochemical Corp
Sinopec Henan Petroleum Exploration Bureau Hydropower Plant
Original Assignee
China Petrochemical Corp
Sinopec Henan Petroleum Exploration Bureau Hydropower Plant
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Application filed by China Petrochemical Corp, Sinopec Henan Petroleum Exploration Bureau Hydropower Plant filed Critical China Petrochemical Corp
Priority to CN201920889253.7U priority Critical patent/CN209844409U/en
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Publication of CN209844409U publication Critical patent/CN209844409U/en
Active legal-status Critical Current
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Abstract

The utility model provides a transmission line is with hoist and mount frame, include: the upright post is used for being fixed at the top of the electric pole, and a fixing structure used for being fixedly connected with the electric pole is arranged on the upright post; the suspension arm is fixed at the top end of the upright stanchion, and one end of the suspension arm, which is far away from the upright stanchion, is provided with an installation structure for installing a lifting rope; wherein, the pole setting has the part that exceeds the pole that exceeds, is provided with the suspension structure who is used for hanging the safety belt couple on the part that exceeds. The beneficial effects of the utility model reside in that: the vertical rod is fixed at the top of the electric pole, which is equivalent to the increase of the height of the electric pole; the suspension arm is provided with an installation structure for installing the suspension rope, so that the lightning conductor and the lightning conductor bracket can be conveniently hung and taken by using the suspension rope, manual lifting is not needed, and the labor intensity is reduced; and be equipped with suspension structure on the higher authority of pole setting, conveniently hang the couple of safety belt, for hanging of safety belt provides reasonable position, the wearable safety belt operation of operation personnel, improved factor of safety greatly, reduce the casualties accident that causes by the operation personnel falls.

Description

Hoisting frame for power transmission line
Technical Field
The utility model relates to a transmission line is with hoist and mount frame.
Background
35kV to 110kV transmission lines in China are widely distributed, most cement electric poles are used as electric wire carriers, the transmission lines are provided with lightning conductors according to relevant specifications in China, the lightning conductors are positioned above the transmission lines and at the highest positions of the electric poles, grounding wires of the lightning conductors are arranged at the cement electric poles, and meanwhile, inclined pull wires are arranged at the turning positions or the corners of the transmission lines. For example, the utility model discloses a device is maintained in electric power construction that chinese utility model patent that the publication number of granting is CN206250682U, including shaft tower (being the cement pole) and the transmission conductor of setting on the cement pole, the top of cement pole is provided with the lightning conductor in transmission conductor's top, is provided with the stay wire between cement pole and the ground. The lightning conductor is fixed on the lightning conductor support, and the lightning conductor support is fixed on the top end of the cement electric pole.
The device mainly meets the power supply of nearby cities or villages and towns, so that most of the devices are frequently hung on the inclined pull line by farmers when being placed in field cultivated lands, so that the cement pole of the power transmission line is inclined, the lightning conductor support is easily stressed and bent or broken due to the pulling effect of the electric wire, and at the moment, the cement pole needs to be righted, the lightning conductor support is replaced, and the fixed lightning conductor is installed again.
However, because the lightning conductor support is higher than cement pole about 1.5 meters slightly, it is big to change the installation degree of difficulty, the weight of lightning conductor is also great simultaneously, adopt the manpower to lift the lightning conductor, fix it on the support, not only waste time and energy, and because the lightning conductor support mounting is on the top of cement pole, the operation position is on the top and the top of cement pole, do not have the higher position to hang the safety belt of guarantee operation personnel safety, consequently can't hang the safety belt at reasonable position according to electric power safety operation regulation, factor of safety is very low, the casualty accident that the operation personnel fall takes place easily.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a transmission line is with hoist and mount frame to solve among the prior art when the installation is changed lightning-arrest line and lightning-arrest line support intensity of labour problem that just factor of safety is low greatly.
In order to achieve the above object, the utility model provides a transmission line is with hoist and mount frame adopts following technical scheme:
a hoisting frame for a power transmission line comprises:
the upright post is used for being fixed at the top of the electric pole, and a fixing structure used for being fixedly connected with the electric pole is arranged on the upright post;
the suspension arm is fixed at the top end of the upright stanchion, and one end of the suspension arm, which is far away from the upright stanchion, is provided with an installation structure for installing a lifting rope;
wherein, the pole setting has the part that exceeds the pole that exceeds, is provided with the suspension structure who is used for hanging the safety belt couple on the part that exceeds.
The technical scheme of the hoisting frame for the power transmission line has the beneficial effects that: the vertical rod is fixed at the top of the electric pole, which is equivalent to the increase of the height of the electric pole; the top end of the upright stanchion is fixed with a suspension arm, and the suspension arm is provided with an installation structure for installing a suspension rope, so that the lightning conductor and the lightning conductor bracket can be conveniently hung by the suspension rope without manual lifting, thereby reducing the labor intensity; and the pole setting has the portion that exceeds the pole that exceeds, is equipped with suspension structure on the portion that exceeds, just so can conveniently hang the couple of safety belt, also provides reasonable position for hanging of safety belt promptly, makes the operation personnel can dress the safety belt operation, has improved factor of safety greatly, reduces the casualty accident that causes by the operation personnel falls.
Further, in order to facilitate the fixing of the vertical rod and the electric pole, the fixing structure is convenient to set, and the fixing structure is a hoop.
Further, in order to increase the application scope of staple bolt, make it fix on the pole of different diameters, the staple bolt includes with pole setting fixed connection's outer hoop and with outer hoop releasable connection's interior staple bolt of embracing, the fastening diameter of interior staple bolt is less than the fastening diameter of outer staple bolt.
Further, for the convenience of the detachable connection between the outer hoop and the inner hoop, the two ends of the outer hoop and the two ends of the inner hoop are provided with connecting plates, bolt through holes are formed in the connecting plates, and the outer hoop and the inner hoop realize the detachable connection through bolts penetrating through the bolt through holes in the connecting plates respectively.
Further, make things convenient for the manufacturing of outer staple bolt and interior staple bolt to make things convenient for fixing between staple bolt and the pole, outer staple bolt and interior staple bolt are semi-circular staple bolt, and the interval between the bolt perforation on the outer hoop both ends connecting plate of embracing equals the interval between the bolt perforation on the inner hoop both ends connecting plate.
Further, for the installation of lifting rope, make things convenient for suspended structure's setting simultaneously, the interval is fixed with two at least horizontal poles in the pole setting, and the horizontal pole supplies the operation personnel to climb so that install the lifting rope on the mounting structure of davit, suspended structure comprises the horizontal pole.
Furthermore, in order to ensure the safety of the operators, the end part of the cross rod is provided with a stop piece for preventing the operators from stepping, sliding and falling.
Furthermore, in order to ensure that the installation structure has a certain height and facilitate the hanging operation of the lifting rope, the included angle between the suspension arm and the vertical rod is greater than or equal to 90 degrees.
Furthermore, the structure is simplified in order to facilitate the arrangement of the installation structure, and the installation structure is a hanging ring for the hanging rope to pass through.
Further, for not causing the influence to other annexes on the pole, through connecting piece fixed connection between pole setting and the staple bolt to make form between pole setting and the pole and dodge the interval of dodging that can dodge other annexes on the pole.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of a hoisting frame for a medium power transmission line according to the present invention;
fig. 2 is a schematic view of a partial structure of a second embodiment of the hoisting frame for a medium power transmission line according to the present invention;
fig. 3 is a schematic structural diagram of a third embodiment of the hoisting frame for the medium power transmission line of the present invention.
In the figure: 1. hooping; 11. a fixed portion; 12. a free portion; 13. an outer hoop; 2. erecting a rod; 3. a cross bar; 31. a stopper; 4. a suspension arm; 5. a hoisting ring; 6. an inner hoop; 61. a connecting plate; 62. perforating the bolt; 7. and (4) bracing.
Detailed Description
The utility model discloses well power transmission line is with hoisting frame's embodiment is as shown in figure 1, including being used for fixing pole setting 2 at the pole top, be provided with in pole setting 2 be used for with pole fixed connection's fixed knot structure, fixed knot in this embodiment constructs for staple bolt 1. Specifically, staple bolt 1 includes two parts, respectively with 2 welded fastening's of pole setting fixed part 11 and through bolt and fixed part 11 fixed connection's free part 12, fixed part 11 and free part 12 all are semi-circular, and both ends all are equipped with the connecting plate, are equipped with the bolt perforation on the connecting plate, during the use, press from both sides the pole through wearing dress bolt and fixation nut and press from both sides the pole tightly, realize the fixed of staple bolt 1 and pole.
Adopt semicircular staple bolt can be convenient and the pole setting between fixed to in order to guarantee the fixed effect of pole setting 2, set staple bolt 1 to two, two staple bolts 1 are the interval setting from top to bottom. In addition, in order not to cause the influence to other accessories on the pole, the upright rod 2 and the hoop 1 are fixedly connected through a connecting piece (not shown in the figure), so that an avoiding space capable of avoiding other accessories on the pole is formed between the upright rod 2 and the pole, namely the fixing part 11 of the hoop 1 is not directly welded and fixed with the upright rod 2, but is welded and fixed on the upright rod 2 through a connecting piece, and particularly, the connecting piece can be a steel bar or a steel plate.
Pole setting 2 passes through staple bolt 1 to be fixed after the pole top, has the higher part that exceeds the pole, and the higher part is gone up to be fixed with three horizontal pole 3 along upper and lower direction interval, and three horizontal pole 3 is equivalent to the cat ladder, can supply the operation personnel to climb. In order to prevent operators from stepping on, sliding and falling off, the end parts of the cross rods 3 are provided with the stopping pieces 31, so that even if the vertical rods are slightly inclined, the operators can slightly slide under feet when climbing, or the surfaces of the cross rods are wet and slippery in rainy and snowy weather, the operators can be prevented from sliding out of the cross rods laterally, and the safety of the operators is guaranteed.
Meanwhile, the cross rod 3 also forms a hanging structure for hanging a safety belt hook, a higher hanging position is provided for hanging the safety belt, the safety belt can be worn by an operator, the operation requirement of high hanging and low using in high-altitude operation is met, the safety coefficient is greatly improved, and casualty accidents caused by falling of the operator are reduced. In addition, the cross rod 3 is used as a hanging structure, the stop piece 31 at the end part of the cross rod can just avoid the falling off of the safety belt hook, and the use safety is ensured.
The top of pole setting 2 is fixed with davit 4, and the one end of keeping away from pole setting 2 of davit 4 is provided with the mounting structure who is used for installing the lifting rope, and mounting structure in this embodiment is rings 5, and during the use, the operation personnel climbs the top of pole setting 2 through horizontal pole 3, passes rings 5 with the lifting rope, then just can utilize the lifting rope to hoist lightning conductor and lightning conductor support to need not the manual work and lift, can alleviate intensity of labour.
The included angle between the suspension arm 4 and the upright stanchion 2 in the embodiment is an obtuse angle, so that the suspension ring 5 can be ensured to have a higher height, and the suspension operation of the suspension rope is convenient. In addition, the upright stanchion 2 and the suspension arm 4 can be made of thin-wall steel pipes, common steel pipes or channel steel and the like; the cross rod 3 can be made of angle steel, threaded steel bars or other materials to increase friction; the stopper 31 may be made of a steel pipe, a steel plate, or the like. In addition, the upright 2 and the cross bar 3, the upright 2 and the suspension arm 4, and the stop 31 and the cross bar 3 are fixed by welding.
The utility model discloses well transmission line is with hoisting frame's theory of operation is:
when the lightning conductor support caused the atress crooked or when splitting because the pole slope, need change the lightning conductor support, the fixed lightning conductor of reinstallation, need at first right the pole this moment, then climbed the top of pole by the operating personnel and will hoist and mount the frame and fix at the pole top through staple bolt 1, pole setting 2 after the fixing is vertical state. Then, the operation personnel utilize horizontal pole 3 to climb to the top of pole setting 2, pass rings 5 with the lifting rope, then down get back to the operation position again, and at this in-process, the operation personnel hang the safety belt couple of wearing on the horizontal pole 3 of suitable position, can carry out the reinstallation of lightning conductor support and lightning conductor.
The lightning conductor support and the lightning conductor are hoisted by the lifting rope in the installation process, manual lifting is omitted, labor intensity is reduced, safety of operating personnel is guaranteed by the safety belt, and safety factor is improved. After the installation is accomplished, pull down staple bolt 1 from the pole to withdraw hoist and mount frame, so that use next time.
The utility model discloses two embodiments of hoist and mount frame for well power transmission line are as shown in fig. 2, hoist and mount frame in this embodiment lies in the concrete form that sets up of staple bolt with the difference of embodiment one, staple bolt in this embodiment includes outer staple bolt 13 and with outer 13 releasable connection's of embracing interior staple bolt 6, outer staple bolt 13 is semicircular staple bolt with interior staple bolt 6, and outer staple bolt 13 only half and with pole setting 2 welded fastening, the both ends of outer staple bolt 13 and interior staple bolt 6 all have the connecting plate, be provided with the bolt on the connecting plate and perforate. Interior staple bolt 6 is taken as an example, and the both ends of interior staple bolt 6 have connecting plate 61, are provided with bolt perforation 62 on the connecting plate 61, and the interval between bolt perforation 62 equals the interval between the bolt perforation on the connecting plate of outer staple bolt both ends on the connecting plate 61 of interior staple bolt 6 both ends, consequently can in advance pass through the bolt fastening with two semicircular interior staple bolts 6 on outer staple bolt 13, when fixed with the pole, will half interior staple bolt 6 pull down earlier can.
Obviously, the fastening diameter of interior staple bolt 6 is less than the fastening diameter of outer staple bolt 13, this is because 35kV to 110 kV's pole diameter is different, and its pole head diameter is also different, if only set up the staple bolt of a fastening diameter, application scope is limited, therefore the staple bolt in this embodiment is just more nimble when using, when the pole diameter is great, pull down interior staple bolt 6, select again one with embrace the semicircular staple bolt cooperation use of 13 equal specifications of hoop outward, realize with the fixed of pole. When the pole diameter is less, utilize interior staple bolt 6 to realize with the fixed of pole, consequently no matter pole diameter size, hoist and mount frame in this embodiment all can be fixed on the pole, and application scope is wider.
The utility model discloses embodiment three of well transmission line is with hoisting frame is shown in fig. 3, and hoisting frame in this embodiment lies in with the difference of embodiment one: an inclined strut 7 is arranged between the upright rod 2 and the suspension arm 4, so that a closed triangular inner frame is formed among the upright rod 2, the suspension arm 4 and the inclined strut 7, and the suspension arm 4 and the upright rod 2 are connected more firmly.
In other embodiments of the hoisting frame for the power transmission line, the hoisting frame does not need to install the lightning conductor bracket and the lightning conductor, and can also be used in other occasions which still work on the top of the electric pole and have hoisting requirements and safety belt hanging requirements, such as a cross arm and an insulator which are arranged on the top of the electric pole, and also need to hoist so as to reduce labor intensity, and meanwhile, a mounting belt needs to be hung so as to ensure the safety of operators.
In other embodiments of the hoisting frame for the power transmission line, when the hoops are wider and one hoop can meet the connection strength between the upright stanchion and the electric pole, one hoop can be adopted; certainly, if the connection strength is not good enough, the fixing with the electric pole can also be realized by adopting three anchor ears.
In other embodiments of the hoisting frame for the power transmission line, the upright stanchions and the cross bars can also be provided with inclined struts for reinforcing connection; in addition, steel plates or steel bars can be additionally arranged between the suspension arm and the lifting ring and between the upright stanchion and the anchor ear for structure reinforcement.
In other embodiments of the hoisting frame for the power transmission line, a connecting piece is not required to be arranged between the upright stanchion and the hoop, and the hoop can be directly welded and fixed on the upright stanchion; in addition, the fixing mode between the hoop and the vertical rod can be realized by adopting bolt connection instead of welding.
In other embodiments of the hoisting frame for the power transmission line, when the sliding friction force between the hoisting rope and the hoisting ring is large and is not beneficial to hoisting and taking the object, a pulley can be hung on the hoisting ring firstly, so that the hoisting rope passes through the pulley to hoist and take the object.
In other embodiments of the hoisting frame for the transmission line, the mounting structure may be not a hoisting ring but directly a pulley.
In other embodiments of the hoisting frame for the power transmission line, the included angle between the boom and the vertical rod can also be 90 degrees.
In other embodiments of the hoisting frame for the power transmission line, the end of the cross rod may not be provided with a stopper, for example, a layer of rubber may be coated on the surface of the cross rod, or a plurality of grooves may be provided on the surface of the cross rod to increase friction, thereby preventing the operator from stepping on the hoisting frame to slide and fall.
In other embodiments of the hoisting frame for the power transmission line, the number of the cross bars can be two or four, or more cross bars can be arranged according to actual needs.
In other embodiments of the hoisting frame for the transmission line, the cross bars themselves do not constitute the suspension structure, which is a hook or a suspension loop additionally arranged on the upright.
In other embodiments of hoisting frame for transmission line, when the height that is used for installing the mounting structure of lifting rope is not very high, the operation personnel rely on self height just can accomplish the installation of lifting rope, also when need not to climb upwards, can not set up the horizontal pole in the pole setting, need set up the suspended structure who hangs the safety belt couple in the pole setting this moment of course.
In other embodiments of the hoisting frame for the power transmission line, the outer hoop and the inner hoop may not be semicircular, for example, the outer hoop and the inner hoop may be circular hoops, the two ends of the outer hoop and the two ends of the inner hoop are also provided with connecting plates, the four connecting plates are fixedly connected through a bolt, and at this time, when the outer hoop and the inner hoop are fixed to the electric pole, the hoops need to be sleeved on the electric pole from top to bottom.
In other embodiments of hoist and mount frame for transmission line, when the both ends of outer staple bolt and interior staple bolt all have the connecting plate, two staple bolts can not be through connecting plate releasable connection, for example can be including fixed bolt on the lateral surface of the arc bent plate of staple bolt, set up the bolt perforation on outer staple bolt, the bolt on the interior staple bolt passes the bolt perforation on the outer hoop of embracing, and install a nut respectively in the inside and outside both sides of embracing the hoop outside on the bolt, the releasable connection between staple bolt and the outer hoop of embracing in the realization, and the position through changing two nuts this moment, can also change in, embrace the interval between the hoop outside, thereby the interval between adjustment pole setting and the pole.
In other embodiments of hoist and mount frame for transmission line, embrace hoop and interior staple bolt outward and can all not be that kind both ends have the staple bolt of connecting plate, for example, outer staple bolt and interior staple bolt all include an arc bent plate, the both ends of arc bent plate are connected with the belt, the staple bolt is fastened through the belt and is fixed on the pole, perhaps the both ends of arc bent plate are connected with wire rope, the staple bolt passes through the wire rope winding and fixes on the pole, at this moment, detachable connection mode between the staple bolt is the same with last embodiment, pass through the mode of bolt and two nut cooperation installations promptly, here is no longer repeated repeatedly repeated.
In other embodiments of the hoisting frame for the power transmission line, the hoop may not be a sleeving form of the outer hoop and the inner hoop, only one hoop is provided, except for the semicircular hoop adopted in the first embodiment, the almost round hoop can also be adopted, two ends of the hoop are provided with the connecting plates, and the two connecting plates are fixedly connected with the electric pole through a bolt and need to be sleeved on the electric pole from top to bottom when being fixed with the electric pole.
In other embodiments of the hoisting frame for the power transmission line, the fixing structure may not be the hoop, for example, the fixing structure is a belt fixed on the vertical rod, and the vertical rod is fastened and fixed on the electric pole through the belt; or the fixed structure is a steel wire rope fixed on the vertical rod, and the vertical rod is wound and fixed on the electric pole through the steel wire rope.

Claims (10)

1. The utility model provides a transmission line is with hoist and mount frame which characterized in that includes:
the upright post is used for being fixed at the top of the electric pole, and a fixing structure used for being fixedly connected with the electric pole is arranged on the upright post;
the suspension arm is fixed at the top end of the upright stanchion, and one end of the suspension arm, which is far away from the upright stanchion, is provided with an installation structure for installing a lifting rope;
wherein, the pole setting has the part that exceeds the pole that exceeds, is provided with the suspension structure who is used for hanging the safety belt couple on the part that exceeds.
2. The hoisting frame for the power transmission line according to claim 1, wherein the fixing structure is a hoop.
3. The hoisting frame for the power transmission line according to claim 2, wherein the anchor ear comprises an outer anchor ear fixedly connected with the vertical rod and an inner anchor ear detachably connected with the outer anchor ear, and the fastening diameter of the inner anchor ear is smaller than that of the outer anchor ear.
4. A hoisting frame for a transmission line according to claim 3, characterized in that the outer hoops and the inner hoops have connecting plates at both ends thereof, the connecting plates being provided with bolt through holes, the outer hoops and the inner hoops being detachably connected by bolts passing through the bolt through holes of the respective connecting plates.
5. A hoisting frame for a power transmission line according to claim 4, characterized in that the outer and inner hoops are semicircular hoops, and the distance between the bolt through holes on the connecting plates at the two ends of the outer hoop is equal to the distance between the bolt through holes on the connecting plates at the two ends of the inner hoop.
6. A hoisting frame for a power transmission line according to claim 1 ~ 5, wherein the uprights have at least two cross bars fixed thereto at intervals, the cross bars being adapted to be climbed by an operator for mounting a lifting rope on a boom mounting structure, said suspension structure being constituted by the cross bars.
7. The hoisting frame for the power transmission line according to claim 6, wherein the end part of the cross bar is provided with a stopper for preventing an operator from stepping, slipping and falling.
8. A hoisting frame for a power transmission line according to any one of claims 1 ~ 5, wherein the angle between the boom and the upright is greater than or equal to 90 degrees.
9. A hoisting frame for a power transmission line according to any one of claims 1 ~ 5, wherein the mounting structure is a sling through which a lifting rope is passed.
10. A hoisting frame for a power transmission line according to claim 2 ~ 5, wherein the upright posts and the hoops are fixedly connected by connectors so as to form an avoiding space between the upright posts and the pole for avoiding other accessories on the pole.
CN201920889253.7U 2019-06-13 2019-06-13 Hoisting frame for power transmission line Active CN209844409U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920889253.7U CN209844409U (en) 2019-06-13 2019-06-13 Hoisting frame for power transmission line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920889253.7U CN209844409U (en) 2019-06-13 2019-06-13 Hoisting frame for power transmission line

Publications (1)

Publication Number Publication Date
CN209844409U true CN209844409U (en) 2019-12-24

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Application Number Title Priority Date Filing Date
CN201920889253.7U Active CN209844409U (en) 2019-06-13 2019-06-13 Hoisting frame for power transmission line

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113173511A (en) * 2021-04-25 2021-07-27 贵州电网有限责任公司 Novel hoisting equipment
CN113346410A (en) * 2021-06-07 2021-09-03 国网山东省电力公司汶上县供电公司 Electric power construction line tightening device and method
CN114362049A (en) * 2022-01-19 2022-04-15 云南电网有限责任公司曲靖供电局 Complete tool for indirectly replacing 10kV line tension insulator in electrified mode and using method
CN114482675A (en) * 2020-11-13 2022-05-13 大唐石门发电有限责任公司 Support frame for power transmission line

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114482675A (en) * 2020-11-13 2022-05-13 大唐石门发电有限责任公司 Support frame for power transmission line
CN113173511A (en) * 2021-04-25 2021-07-27 贵州电网有限责任公司 Novel hoisting equipment
CN113346410A (en) * 2021-06-07 2021-09-03 国网山东省电力公司汶上县供电公司 Electric power construction line tightening device and method
CN114362049A (en) * 2022-01-19 2022-04-15 云南电网有限责任公司曲靖供电局 Complete tool for indirectly replacing 10kV line tension insulator in electrified mode and using method

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