CN111355188A - Live crossing construction method for high-voltage line - Google Patents
Live crossing construction method for high-voltage line Download PDFInfo
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- CN111355188A CN111355188A CN202010294934.6A CN202010294934A CN111355188A CN 111355188 A CN111355188 A CN 111355188A CN 202010294934 A CN202010294934 A CN 202010294934A CN 111355188 A CN111355188 A CN 111355188A
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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
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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
- H02G1/04—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching
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Abstract
The invention provides a live crossing construction method for a high-voltage line, which comprises the following steps: A. respectively burying ground anchors at two sides of the crossed line; B. an iron tower of a high-voltage line is used as a crossing frame, a holding pole is arranged below a wire cross arm of the iron tower, and a bearing tackle is installed on the holding pole; C. drawing a first bearing rope; D. installing a hanging basket to form an insulating sealing net; E. c, pulling a second bearing rope between the wire cross arms of the two iron towers according to the method in the step C; F. assembling a stay pulley block, wherein the stay pulley block comprises a plurality of upper pulleys, and each upper pulley is connected with a lower pulley; pulling the stay pulley block to the lower part of the second bearing rope, and mounting each upper pulley on the second bearing rope; G. the traction wire anchors two ends of the wire on the wire cross arm; H. and detaching the stay pulley block, the second bearing rope, the hanging basket and the first bearing rope. The invention is not limited by terrain, and is suitable for the construction of the crossed spanning stringing line which is higher in the spanned line and can not be powered off.
Description
Technical Field
The invention relates to the technical field of electric power construction, in particular to a live crossing construction method for a high-voltage line.
Background
In the construction of laying the line conductor, the line which is operated in a live-wire mode needs to be crossed frequently. In the construction method for crossing live lines, a crossing mode of erecting a crossing frame, a crossing mode of arranging a sealing net under the crossing frame and a power failure crossing mode are adopted. In part of high-voltage current collection line construction projects, due to coordinated work, spanning time is indefinite, and a power failure spanning mode cannot be adopted; the mountainous terrain is complex, and a crossing frame building mode cannot be adopted; the safety factor is not enough by adopting a lower net sealing mode.
Disclosure of Invention
The invention aims to provide a live crossing construction method for a high-voltage line, which is suitable for construction of various terrains and has higher safety coefficient.
The technical scheme adopted by the invention for solving the technical problems is as follows: the live crossing construction method of the high-voltage line comprises the following steps:
A. respectively burying ground anchors at two sides of the crossed line;
B. taking an iron tower of a high-voltage line as a crossing frame, arranging a holding pole below a wire cross arm of the iron tower, enabling two ends of the holding pole to exceed two ends of the wire cross arm, and installing a bearing tackle on the holding pole;
C. connecting one end of a first bearing rope with a first traction rope, driving the traction end of the first traction rope to sequentially cross an iron tower on one side of a spanned line and an iron tower on the other side of the spanned line by using an aeromodelling, moving the first traction rope to a bearing pulley by constructors, applying traction force to the traction end of the first traction rope, drawing the first bearing rope in place, and anchoring two ends of the first bearing rope on a ground anchor;
D. assembling hanging baskets with required quantity, wherein each hanging basket is U-shaped, a supporting pulley is arranged at the top of each hanging basket, and two adjacent hanging baskets are connected through a plurality of flexible first connecting ropes; hanging the hanging baskets below a first bearing rope, sequentially opening a support pulley of each hanging basket and hanging the support pulleys on the first bearing rope; second traction ropes are arranged on the hanging baskets at the two ends, the hanging baskets are dragged by the second traction ropes, so that the hanging baskets are dispersed and uniformly distributed above the spanned line, and then the second traction ropes are anchored;
E. c, pulling a second bearing rope between the wire cross arms of the two iron towers according to the method in the step C;
F. assembling a stay wire pulley block, wherein the stay wire pulley block comprises a plurality of upper pulleys, each upper pulley is connected with a lower pulley through a stay wire, and two adjacent upper pulleys and two adjacent lower pulleys are connected through a second connecting rope; pulling the stay pulley block to the lower part of the second bearing rope, and mounting each upper pulley on the second bearing rope;
G. the wire is pulled, so that the wire passes through each lower pulley, and after the wire is pulled in place, two ends of the wire are anchored on the wire cross arm;
H. and detaching the stay pulley block, the second bearing rope, the hanging basket and the first bearing rope.
And further, in the step B, a triple pile is buried in the ground, and two ends of the holding rod are connected with the triple pile through steel wire ropes.
And furthermore, a ground anchor at one side of the cross line is connected with a lever block, in the step C, one end of the first bearing rope is anchored on the ground anchor, the other end of the first bearing rope is anchored on the lever block, and the sag of the first bearing rope is adjusted through a chain for retracting the lever block.
Further, in the step C, the first traction rope includes a Φ 1 denyma rope, a Φ 3.5 denyma rope and a Φ 8 denyma rope which are connected in sequence, the first bearing rope is connected with the Φ 8 denyma rope, the traction end of the Φ 1 denyma rope is driven by the model airplane to sequentially cross the iron tower on one side of the transroute and the iron tower on the other side of the transroute, the constructor moves the Φ 1 denyma rope to the bearing pulley, traction force is manually applied to the Φ 1 denyma rope, the Φ 3.5 denyma rope is pulled, then traction force is manually applied to the Φ 3.5 denyma rope, the Φ 8 denyma rope is pulled, and finally traction force is applied to the Φ 8 denyma rope by the traction equipment, and the first bearing rope is pulled.
Further, the first bearing rope and the second bearing rope are both phi 18 Dyneema ropes.
Furthermore, in the step D, two temporary anchoring ropes are respectively arranged at the bottoms of the hanging baskets at the two ends, a second traction rope is arranged at the traction end of the hanging basket, after the hanging baskets are hung below the first bearing rope, the temporary anchoring ropes are anchored, the supporting pulleys of the hanging baskets are sequentially opened and hung on the first bearing rope, then the temporary anchoring ropes at the traction end of the hanging baskets are dismantled, traction force is applied to the second traction ropes at the traction end of the hanging baskets, the hanging baskets are pulled to slowly move and disperse, when the remaining groups of hanging baskets are not moved, the temporary anchoring ropes at the other end of the hanging baskets are dismantled, the second traction ropes are connected to the other end of the hanging baskets, the hanging baskets are continuously pulled at the traction end until the hanging baskets cross the line, and finally the second traction ropes at the two ends of the hanging baskets are anchored.
And step F, connecting third traction ropes at two ends of the stay pulley block, and drawing the stay pulley block above the hanging basket by the third traction ropes.
Further, the distance between two adjacent upper pulleys is 2 m.
Furthermore, in the step F, after the stay pulley block is pulled below the second bearing rope, a fourth pulling rope passes through each lower pulley, and then the stay pulley block is pulled in place;
and G, one end of the fourth traction rope is a traction end, the other end of the fourth traction rope is connected with the lead, traction force is applied to the traction end of the fourth traction rope, and the lead is pulled.
And further, in the step B, the middle part of the holding pole is fixed on a main material of the iron tower by using a phi 13 steel wire rope, and two ends of the holding pole are obliquely hung at a lower cross arm hanging point of the iron tower through the phi 13 steel wire rope.
The invention has the beneficial effects that: the invention utilizes the lower pulley of the guy pulley block to pull the guide wire, which is labor-saving, and the lower pulley can play a role of supporting the guide wire and can prevent the guide wire from falling off. The invention is not limited by terrain, and is suitable for the construction of the crossed spanning stringing line which is higher in the spanned line and can not be powered off.
Drawings
FIG. 1 is a schematic top view of an earth anchor installation;
FIG. 2 is a schematic top view of a screen layout;
FIG. 3 is a schematic top view of another arrangement of the screen;
FIG. 4 is a schematic front view of a screen arrangement;
figures 5 to 8 are schematic views of temporary anchoring of a basket;
FIG. 9 is a schematic drawing of the lead;
reference numerals: 1-a transreceiver; 2-an earth anchor; 3, an iron tower; 4-wire cross arm; 5, holding the pole; 6, carrying a pulley; 7-a first load-bearing rope; 8, hanging baskets; 9-a first connecting rope; 10-supporting the pulley; 11-a second pull rope; 12-a second load-bearing rope; 13-upper pulley; 14, pulling a wire; 15-lower pulley; 16-a second connecting rope; 17-a wire; 18-triple piles; 19-lever block; 20-temporary anchoring ropes; 21-a third hauling cable; 22-a fourth pull cord.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
The invention relates to a live crossing construction method of a high-voltage line, which comprises the following steps:
A. as shown in figure 1, the ground anchors 2 are respectively buried at two sides of the spanned line 1, the burying depth of the ground anchors 2 is 2.5m, and whether underground pipelines and optical cable facilities exist nearby is checked during excavation so as to take effective avoiding measures.
B. The iron tower 3 of the high-voltage line is used as a spanning frame, and the spanning frame does not need to be additionally erected, so that the construction amount is reduced, and the construction cost is saved. The horizontal holding pole 5 is arranged below the wire cross arm 4 of the iron tower 3, the length of the holding pole 5 is larger than that of the wire cross arm 4 of the iron tower 3, two ends of the holding pole 5 exceed two ends of the wire cross arm 4 by about 1.5m, and the holding pole 5 is located below the wire cross arm 4 by about 2 m. Specifically, the middle part of the holding pole 5 is fixed on a main material of the iron tower 3 by using a phi 13 steel wire rope, and two ends of the holding pole 5 are obliquely hung at a lower cross arm hanging point of the iron tower 3 through the phi 13 steel wire rope. And a bearing tackle 6 is arranged on the holding pole 5, and the bearing tackle 6 is used for pulling the insulating sealing net.
In order to improve the stability of the holding pole 5, a triple pile 18 is buried in the ground, and two ends of the holding pole 5 are connected with the triple pile 18 through steel wire ropes.
C. The structure of the insulation block is determined, as shown in fig. 2, the insulation block can be an integral type, or a segmented type as shown in fig. 3, and is selected according to the actual situation of the transgressed line 1. The two sides of the insulating sealing net are hung on the first bearing rope 7, and the first bearing rope 7 is pulled by the first pulling rope to cross the spanned line 1 and be fixed above the spanned line 1.
Specifically, one end of a first bearing rope 7 is connected with a first traction rope, a model airplane is utilized to drive the traction end of the first traction rope to sequentially cross an iron tower 3 on one side of a spanned line 1, the spanned line 1 and an iron tower 3 on the other side of the spanned line 1, a constructor moves the first traction rope to a bearing pulley 6, traction force is applied to the traction end of the first traction rope, the first bearing rope 7 is pulled in place, and two ends of the first bearing rope 7 are anchored on a ground anchor 2, as shown in fig. 2 and 3.
One end of the first hauling cable is connected with the first bearing rope 7, and the other end is a hauling end. The diameter and the weight of the first traction rope are smaller than those of the first bearing rope 7, so that labor is saved when the first traction rope is driven to cross the iron tower 3 and the spanned line 1. Laying of first haulage rope mainly is driven by the model aeroplane and model ship, replaces manual operation, and factor of safety is high, and is efficient also.
The first traction rope may be one, as a more preferred embodiment: first haulage rope is including the phi 1 Dynima rope that connects gradually, phi 3.5 Dynima rope and the phi 8 Dynima rope, first bear rope 7 and phi 8 Dynima rope link to each other, utilize the model aeroplane and model ship to drive the end of pulling of phi 1 Dynima rope and cross iron tower 3 by 1 one side of overline 1 and by 1 the overline and by iron tower 3 of 1 opposite side of overline, constructor removes phi 1 Dynima rope to bearing block 6, the manual work exerts traction force to phi 1 Dynima rope, pull phi 3.5 Dynima rope, then the manual work exerts traction force to phi 3.5 Dynima rope, pull phi 8 Dynima rope, exert traction force to phi 8 Dynima rope by traction equipment at last, it pulls to bear rope 7 first. Light in weight of phi 1 Dyneema rope, the model aeroplane and model ship can drive phi 1 Dyneema rope easily to stride across by overline 1 and iron tower 3, the workman also can relatively move phi 1 Dyneema rope to the coaster 6 that bears of two iron towers 3 laborsavingly, then utilize phi 1 Dyneema rope manual work to pull phi 3.5 Dyneema rope, phi 3.5 Dyneema rope manual work pulls phi 8 Dyneema rope, can reduce the tractive of first haulage rope and establish the degree of difficulty.
In order to adjust the sag of the first bearing rope 7 conveniently, the ground anchor 2 on one side of the cross line 1 is connected with a lever hoist 19, after the first bearing rope 7 is pulled in place, one end of the first bearing rope 7 is anchored on the ground anchor 2, the other end of the first bearing rope 7 is anchored on the lever hoist 19, and the sag of the first bearing rope 7 is adjusted through a chain for retracting the lever hoist 19.
D. Assembling a required number of baskets 8, as shown in fig. 6, each basket 8 is U-shaped, a supporting pulley 10 is arranged at the top of each basket 8, and two adjacent baskets 8 are connected by a plurality of flexible first connecting ropes 9; intensively hoisting the hanging baskets 8 to the lower part of the first bearing rope 7, sequentially opening the supporting pulleys 10 of the hanging baskets 8 and hanging the supporting pulleys 10 on the first bearing rope 7; second traction ropes 11 are arranged on the hanging baskets 8 at the two ends, the hanging baskets 8 are dragged by the second traction ropes 11, so that the hanging baskets 8 are dispersed and uniformly distributed above the spanned line 1, and then the second traction ropes 11 are anchored.
Specifically, two temporary anchoring ropes 20 are respectively arranged at the bottoms of the hanging baskets 8 at the two ends, the second traction rope 11 is arranged at the traction end of the hanging basket 8, and after the hanging baskets 8 are hung below the first bearing rope 7, the 4 temporary anchoring ropes 20 are anchored firstly, as shown in fig. 5, the stability of each hanging basket 8 is ensured, and the hanging baskets 8 are prevented from accidentally falling. And then sequentially opening the supporting pulleys 10 of the hanging baskets 8 and hanging the supporting pulleys 10 on the first bearing ropes 7, then removing the temporary anchoring ropes 20 at the traction end of the hanging baskets 8, applying traction force to the second traction ropes 11 at the traction end of the hanging baskets 8, pulling the hanging baskets 8 to slowly move and disperse, as shown in fig. 6, removing the temporary anchoring ropes 20 at the other end of the hanging baskets 8 when the remaining hanging baskets are not moved, connecting the second traction ropes 11 at the other end of the hanging baskets 8, continuously pulling the hanging baskets 8 at the traction end until the hanging baskets 8 are completely dispersed and cross the spanned line 1, as shown in fig. 7, and finally anchoring the second traction ropes 11 at the two ends of the hanging baskets 8, as shown in fig. 8, so that an insulating sealing net can be formed, as shown in fig. 4.
E. And D, pulling a second bearing rope 12 between the wire cross arms 4 of the two iron towers 3 according to the method in the step C, wherein the first bearing rope 7 and the second bearing rope 12 are both phi 18 Dynima ropes, and the strength is high.
F. And assembling a stay pulley block, wherein the stay pulley block comprises a plurality of upper pulleys 13, and the distance between every two adjacent upper pulleys 13 is 2m as shown in fig. 9. Each upper pulley 13 is connected with a lower pulley 15 through a stay wire 14, and two adjacent upper pulleys 13 and two adjacent lower pulleys 15 are connected through a second connecting rope 16; the cable pulley block is pulled below the second load bearing rope 12, and each upper pulley 13 is mounted on the second load bearing rope 12. Specifically, the two ends of the wire pulling pulley block are connected with third traction ropes 21, traction force is applied to the third traction ropes 21, and the wire pulling pulley block can be pulled above the hanging basket 8 by the third traction ropes 21. The total length of the stay wire pulley block should be greater than the length of the insulating sealing net, and the two ends of the stay wire pulley block should exceed the two ends of the insulating sealing net by about 4 m.
After the pulling line pulley block is pulled below the second bearing rope 12, a fourth pulling rope 22 passes through each lower pulley 15, and then the pulling line pulley block is pulled in place, and the fourth pulling rope 22 is used for pulling the lead 17.
G. The wire 17 is pulled so that the wire 17 passes through each lower pulley 15. Specifically, one end of the fourth pulling rope 22 is a pulling end, and the other end of the fourth pulling rope 22 is connected to the wire 17, so that the pulling force is applied to the pulling end of the fourth pulling rope 22, and the wire 17 can be pulled. After the lead 17 is pulled in place, the two ends of the lead 17 are anchored on the lead cross arm 4
H. The stay pulley block, the second bearing rope 12, the hanging basket 8 and the first bearing rope 7 are removed.
The invention utilizes the lower pulley 15 of the guy pulley block to draw the wire 17, which is labor-saving, and the lower pulley 15 can play a role of supporting the wire 17 and can prevent the wire 17 from falling off, in addition, the lower part of the guy pulley block is provided with the insulating sealing net consisting of the hanging basket 8, which can play a role of protecting the strided line 1, even if the wire 17 accidentally falls off, the wire 17 can only fall on the sealing net, which can prevent the wire 17 from falling on the strided line 1 and damaging the strided line 1, thereby ensuring the safety of equipment and construction. The invention is suitable for the construction of the crossed spanning stringing-up line which has higher crossed line and can not be powered off.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The live crossing construction method of the high-voltage line is characterized by comprising the following steps of:
A. the two sides of the crossed line (1) are respectively embedded with a ground anchor (2);
B. an iron tower (3) of a high-voltage line is used as a crossing frame, a holding pole (5) is arranged below a wire cross arm (4) of the iron tower (3), two ends of the holding pole (5) exceed two ends of the wire cross arm (4), and a bearing tackle (6) is installed on the holding pole (5);
C. one end of a first bearing rope (7) is connected with a first traction rope, a model airplane is utilized to drive the traction end of the first traction rope to sequentially cross an iron tower (3) on one side of a striding line (1), the striding line (1) and the iron tower (3) on the other side of the striding line (1), a constructor moves the first traction rope to a bearing pulley (6), traction force is applied to the traction end of the first traction rope, the first bearing rope (7) is pulled in place, and two ends of the first bearing rope (7) are anchored on a ground anchor (2);
D. assembling hanging baskets (8) with required quantity, wherein each hanging basket (8) is U-shaped, a supporting tackle (10) is arranged at the top of each hanging basket (8), and every two adjacent hanging baskets (8) are connected through a plurality of flexible first connecting ropes (9); hanging the hanging baskets (8) below the first bearing rope (7), sequentially opening the supporting pulleys (10) of the hanging baskets (8) and hanging the supporting pulleys (10) on the first bearing rope (7); second traction ropes (11) are arranged on the hanging baskets (8) at the two ends, the hanging baskets (8) are dragged by the second traction ropes (11), so that the hanging baskets (8) are dispersed and uniformly distributed above the spanned line (1), and then the second traction ropes (11) are anchored;
E. drawing a second bearing rope (12) between the wire cross arms (4) of the two iron towers (3) according to the method in the step C;
F. assembling a stay pulley block, wherein the stay pulley block comprises a plurality of upper pulleys (13), each upper pulley (13) is connected with a lower pulley (15) through a stay wire (14), and two adjacent upper pulleys (13) and two adjacent lower pulleys (15) are connected through a second connecting rope (16); pulling the stay pulley block to the lower part of the second bearing rope (12), and installing each upper pulley (13) on the second bearing rope (12);
G. the lead (17) is pulled, so that the lead (17) passes through each lower pulley (15), and after the lead (17) is pulled in place, two ends of the lead (17) are anchored on the lead cross arm (4);
H. and the stay pulley block, the second bearing rope (12), the hanging basket (8) and the first bearing rope (7) are dismantled.
2. The live crossover construction method of the high-voltage line according to claim 1, characterized in that: and step B, burying a triple pile (18) on the ground, and connecting the two ends of the holding pole (5) with the triple pile (18) through a steel wire rope.
3. The live crossover construction method of the high-voltage line according to claim 1, characterized in that: and in the step C, one end of the first bearing rope (7) is anchored on the ground anchor (2), the other end of the first bearing rope is anchored on the lever block (19), and the sag of the first bearing rope (7) is adjusted through a chain for retracting the lever block (19).
4. The live crossover construction method of the high-voltage line according to claim 1, characterized in that: in the step C, the first traction rope comprises a phi 1 Dyneema rope, a phi 3.5 Dyneema rope and a phi 8 Dyneema rope which are sequentially connected, the first bearing rope (7) is connected with the phi 8 Dyneema rope, the traction end of the phi 1 Dyneema rope is driven by an aeromodelling to sequentially cross the iron tower (3) on one side of the transbay (1), the iron tower (3) on the other side of the transbay (1) and the iron tower (3) on the other side of the transbay (1), a constructor moves the phi 1 Dyneema rope to the bearing pulley (6), applies traction force to the phi 1 Dyneema rope manually, pulls the phi 3.5 Dyneema rope, then applies traction force to the phi 3.5 Dyneema rope manually, pulls the phi 8 Dyneema rope, and finally applies traction force to the phi 8 Dyneema rope by a traction device, and pulls the first bearing rope (7).
5. The live crossover construction method of the high-voltage line according to claim 1, characterized in that: the first bearing rope (7) and the second bearing rope (12) are both phi 18 Dyneema ropes.
6. The live crossover construction method of the high-voltage line according to claim 1, characterized in that: in the step D, two temporary anchoring ropes (20) are respectively arranged at the bottoms of the hanging baskets (8) at the two ends, second traction ropes (11) are arranged at the traction end of the hanging baskets (8), after the hanging baskets (8) are hung below the first bearing rope (7), the temporary anchoring ropes (20) are anchored, then the supporting pulleys (10) of the hanging baskets (8) are sequentially opened and the supporting pulleys (10) are hung on the first bearing rope (7), then the temporary anchoring ropes (20) at the traction end of the hanging baskets (8) are dismantled, traction force is applied to the second traction ropes (11) at the traction end of the hanging baskets (8), the hanging baskets (8) are pulled to slowly move and disperse, when the remaining hanging baskets are not moved, the temporary anchoring ropes (20) at the other end of the hanging baskets (8) are dismantled, the second traction ropes (11) are connected at the other end of the hanging baskets (8), and the hanging baskets (8) are continuously pulled at the traction end, until the hanging basket (8) crosses the spanned line (1), and finally, the second traction ropes (11) at the two ends of the hanging basket (8) are anchored.
7. The live crossover construction method of the high-voltage line according to claim 1, characterized in that: and in the step F, the two ends of the stay wire pulley block are connected with third traction ropes (21), and the stay wire pulley block is pulled above the hanging basket (8) by the third traction ropes (21).
8. The live crossover construction method of the high-voltage line according to claim 1, characterized in that: the distance between two adjacent upper pulleys (13) is 2 m.
9. The live crossover construction method of the high-voltage line according to claim 1, characterized in that: in the step F, after the stay wire pulley block is pulled below the second bearing rope (12), a fourth pulling rope (22) passes through each lower pulley (15), and then the stay wire pulley block is pulled in place;
and G, one end of the fourth traction rope (22) is a traction end, the other end of the fourth traction rope is connected with the lead (17), traction force is applied to the traction end of the fourth traction rope (22), and the lead (17) is pulled.
10. The live crossover construction method of the high-voltage line according to claim 1, characterized in that: in the step B, the middle part of the holding pole (5) is fixed on a main material of the iron tower (3) by using a phi 13 steel wire rope, and two ends of the holding pole (5) are obliquely hung at a lower cross arm hanging point of the iron tower (3) through the phi 13 steel wire rope.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010294934.6A CN111355188A (en) | 2020-04-15 | 2020-04-15 | Live crossing construction method for high-voltage line |
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| CN202010294934.6A CN111355188A (en) | 2020-04-15 | 2020-04-15 | Live crossing construction method for high-voltage line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111884124A (en) * | 2020-07-15 | 2020-11-03 | 宁夏荣光电力工程有限公司 | Electrified crossing net sealing device and use method thereof |
| CN113690794A (en) * | 2021-08-27 | 2021-11-23 | 中国电建集团重庆工程有限公司 | Ultra-long span net sealing method based on mountain |
| CN113904262A (en) * | 2021-10-08 | 2022-01-07 | 攀钢集团工程技术有限公司 | Construction method for transferring large-span overhead line |
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| CN111884124A (en) * | 2020-07-15 | 2020-11-03 | 宁夏荣光电力工程有限公司 | Electrified crossing net sealing device and use method thereof |
| CN111884124B (en) * | 2020-07-15 | 2021-05-28 | 宁夏荣光电力工程有限公司 | Electrified crossing net sealing device and use method thereof |
| CN113690794A (en) * | 2021-08-27 | 2021-11-23 | 中国电建集团重庆工程有限公司 | Ultra-long span net sealing method based on mountain |
| CN113690794B (en) * | 2021-08-27 | 2022-08-26 | 中国电建集团重庆工程有限公司 | Ultra-long span net sealing method based on mountain |
| CN113904262A (en) * | 2021-10-08 | 2022-01-07 | 攀钢集团工程技术有限公司 | Construction method for transferring large-span overhead line |
| CN113904262B (en) * | 2021-10-08 | 2023-08-04 | 攀钢集团工程技术有限公司 | Construction method for transferring large-span overhead line |
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