CN109672112B - Construction method of tension type power line protection net - Google Patents
Construction method of tension type power line protection net Download PDFInfo
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- CN109672112B CN109672112B CN201710964000.7A CN201710964000A CN109672112B CN 109672112 B CN109672112 B CN 109672112B CN 201710964000 A CN201710964000 A CN 201710964000A CN 109672112 B CN109672112 B CN 109672112B
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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 construction method of a tension type power line protection net, belonging to the field of power construction and comprising the following steps: erecting a wire spanning frame: the cross-line frame comprises a first frame body, a second frame body and an arc-shaped top frame, wherein the first frame body is erected on one side of the original electric power circuit, the second frame body is erected on the other side of the original electric power circuit, and the top frame is made to cross over the original electric power circuit and is connected with the first frame body and the second frame body; setting up a protection net: a first protective net is erected between the first frame body and the original power line; a second protective net is erected between the second frame body and the original power line; and (5) performing cross-line construction. The construction method is applied to the construction of the over-line cable, the construction can be carried out under the condition of not cutting off the original power line, the power consumption of surrounding residents and enterprises is not influenced by the power construction, the construction is more convenient, and the construction efficiency is high.
Description
Technical Field
The invention relates to the field of power construction, in particular to a construction method of a tension type power line protection net.
Background
Power engineering is one of the currently important basic projects. There are many different occasions to need to deal with in the electric power construction process. When the cable conductor is laid across the line, the power line to be constructed needs to cross over the original power line, and in the prior art, the circuit of the original power line needs to be cut off under the condition, so that the power line is uncharged, and then the construction of the power line to be constructed is carried out.
The mode directly leads to the power failure of the original power line, brings great inconvenience to residents and other power consumption units, and is very troublesome because the power cannot be supplied in the construction period.
Disclosure of Invention
The invention provides a construction method of a tension type power line protection net, and aims to solve the problems in the prior art.
The invention is realized by the following steps:
a construction method of a tension type power line protection net comprises the following steps:
erecting a wire spanning frame: the cross-line frame comprises a first frame body, a second frame body and an arc-shaped top frame, wherein the first frame body is erected on one side of the original electric power circuit, the second frame body is erected on the other side of the original electric power circuit, and the top frame is made to cross over the original electric power circuit and is connected with the first frame body and the second frame body; the top frame is connected to the first frame body and fixed on the ground, the top frame crosses over the original power line, the second frame body and the top frame are connected, and then the second frame body is fixed on the ground; the top frame is provided with a wire connector, and the wire connector can slide on the top frame;
setting up a protection net: a first protective net is erected between the first frame body and the original power line; a second protective net is erected between the second frame body and the original power line;
and (3) cross-line construction: connecting the cable to the wire connector, and moving the wire connector to the other side of the original power line to enable the cable to cross the original power line.
Preferably, the top frame is provided with a first end and a second end, the second end is provided with a connecting hole which is arranged downwards, and a first magnet is arranged in the connecting hole; the top end of the second frame body is provided with a blind hole, a connecting block is placed in the blind hole, a blocking piece detachably connected with the second frame body is arranged at an orifice of the blind hole, the height of the connecting block is smaller than that of the blind hole, so that the connecting block can move in the blind hole, and the blocking piece blocks the connecting block from being separated from the blind hole; a second magnet is arranged at the top end of the connecting block, and the end part of the second magnet extends to the outside of the blind hole;
when the wire spanning frame is erected, the first end of the top frame is connected to the top end of the first frame body, and the first frame body is vertically inserted on the ground; rotating the first frame body to enable the second end of the top frame to cross over the original power circuit; moving the second frame body to enable the top end of the second frame body to be close to the second end, enabling the second magnet to be sucked into the first magnet in the connecting hole, and enabling the second frame body to be connected with the top frame;
and inserting the second frame body on the ground.
Preferably, the top frame comprises a center frame and side frames arranged on two sides of the center frame, a sliding groove is formed in the center frame, and a notch is formed in the top of the center frame; a chute is also formed in the side frame, and a notch is formed in one side of the side frame, which faces the center frame; set up central wire connector in the spout of center frame, set up the lateral part connector in the spout of side bearer, the stay cord is all connected at the both ends of central wire connector, the lateral part connector passes through flexible connection rope and connects the central wire connector, the length of connecting the rope is greater than the distance between side bearer and the center frame.
Preferably, the first frame body comprises a bottom rod and a top rod which are connected, and the top rod is sleeved outside the bottom rod; the side part of the ejector rod forms an extension groove, the structure of the extension groove is consistent with that of the sliding groove, and the extension groove is communicated with the sliding groove of the center frame and the sliding groove of the side frame.
Further preferably, the central wire connector comprises a wire connection port, the wire connection port is of a through hole structure, a compression bolt in threaded connection with the central wire connector is arranged on the central wire connector, and the bottom end portion of the compression bolt is communicated with the wire connection port.
Preferably, the bottom of the top rod comprises a sleeve, and the sleeve is sleeved outside the bottom rod; and a jacking bolt penetrating through the side wall of the sleeve is arranged on the outer side of the sleeve.
More preferably, the first protection net and the second protection net are symmetrically arranged; first protection network sets up on the protection frame, and the top of protection frame is towards original power line buckles.
More preferably, the first protection net is lower than the existing power line.
The construction method of the tension type power line protection net provided by the invention is applied to the construction of the over-line cable, can be used for construction under the condition of not cutting off the original power line, ensures that the power consumption of surrounding residents and enterprises is not influenced in the power construction, and is convenient and fast in construction and high in construction efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a construction method of a tension type power line protection network provided by an embodiment of the invention during construction;
fig. 2 is a schematic structural diagram of a first frame in a construction method of a tension-type power line protection grid according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a top frame in a method for constructing a tension-type power line protection grid according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of an end of a second frame in a method for constructing a tension-type power line protection grid according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view illustrating a connection between a second frame and a top frame in a method for constructing a tension-type power line protection grid according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a first protective net in a construction method of a tension-type power line protection net according to an embodiment of the present invention.
Summary of reference numerals: the device comprises a wire spanning frame 11, a first frame body 12, a second frame body 13, a top frame 14, a first protective net 15, a second protective net 16, a connecting hole 17, a first magnet 18, a blind hole 19, a connecting block 20, a blocking piece 21, a second magnet 22, a central frame 23, a side frame 24, a sliding groove 25, a central wire connector 26, a side wire connector 27, a pull rope 28, a connecting rope 29, a bottom rod 30, a top rod 31, an extending groove 32, a compression bolt 33, a wire connecting port 34, a sleeve 35, a top tightening bolt 36 and a protective frame 37.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For example, please refer to FIGS. 1-6.
The embodiment provides a construction method of a tension type power line protection network, which is applied to the construction of an over-line cable, can be used for construction under the condition of not cutting off an original power line, ensures that the power consumption of surrounding residents and enterprises is not influenced by power construction, and is convenient to construct and high in construction efficiency.
As shown in fig. 1, the construction method of the tension type power line protection network comprises the following steps:
erecting a wire spanning frame 11: the wire spanning frame 11 comprises a first frame body 12, a second frame body 13 and an arc-shaped top frame 14, wherein the first frame body 12 is erected on one side of the original electric power circuit, the second frame body 13 is erected on the other side of the original electric power circuit, and the top frame 14 spans from the upper side of the original electric power circuit and is connected with the first frame body 12 and the second frame body 13; wherein, the top frame 14 is connected to the first frame body 12, the first frame body 12 is fixed on the ground, the top frame 14 crosses over the original power line, the second frame body 13 and the top frame 14 are connected, and then the second frame body 13 is fixed on the ground; the top frame 14 is provided with a wire connector, and the wire connector can slide on the top frame 14;
setting up a protection net: a first protective net 15 is erected between the first frame body 12 and the original power line; a second protective net 16 is erected between the second frame body 13 and the original power line;
and (3) cross-line construction: connecting the cable to the wire connector, and moving the wire connector to the other side of the original power line to enable the cable to cross the original power line.
The first frame body 12 and the second frame body 13 are used for supporting the top frame 14 and form an extended structure. During construction, the cable is connected to the wire connector, the wire connector is moved from one side of the original power line to the other side by moving the wire connector, the wire crossing work is completed, and then the cable is connected to the proper telegraph pole. By moving the wire connector for many times, the crossing construction of the cable needing to cross the original power line is completed, and the construction is completed.
The construction mode can complete the over-line construction under the condition of no power failure. Simultaneously, need not be with the help of high-end machine equipment (unmanned aerial vehicle for example) in the work progress, comparatively stable in each parts work progress, entire system stability is higher. After the cross-line frame 11 and the protection net are erected, construction personnel do not need to climb to a higher height, so that construction can be carried out quickly, the safety coefficient of construction workers is high, and safety accidents are few.
The protection net is arranged below the wire-crossing frame 11, so that once an accident occurs (for example, components on the wire-crossing frame 11 fall off, due to the arrangement of the protection net, the fallen components fall between the first protection net 15 and the second protection net 16 with a high probability, the components are not easy to smash on the body of a worker, and the occurrence of construction accidents is further reduced.
Therefore, the construction method is applied to the construction of the over-line cable, the construction can be carried out under the condition of not cutting off the original power line, the power consumption of surrounding residents and enterprises is not influenced by the power construction, the construction is convenient, and the construction efficiency is high.
As shown in fig. 1, 4 and 5, the top frame 14 has a first end and a second end, the second end has a connection hole 17 disposed downward, and a first magnet 18 is disposed in the connection hole 17; a blind hole 19 is formed in the top end of the second frame body 13, a connecting block 20 is placed in the blind hole 19, a blocking piece 21 detachably connected with the second frame body 13 is arranged at an orifice of the blind hole 19, the connecting block 20 is smaller than the blind hole 19 in height so that the connecting block 20 can move in the blind hole 19, and the blocking piece 21 blocks the connecting block 20 from being separated from the blind hole 19; a second magnet 22 is arranged at the top end of the connecting block 20, and the end part of the second magnet 22 extends to the outside of the blind hole 19;
when the wire spanning frame 11 is erected, the first end of the top frame 14 is connected to the top end of the first frame body 12, and the first frame body 12 is vertically inserted on the ground; rotating the first frame 12 to make the second end of the top frame 14 cross the original power line; moving the second frame body 13 to make the top end thereof close to the second end, so that the second magnet 22 is attracted into the first magnet 18 in the connecting hole 17, and the second frame body 13 is connected with the top frame 14;
the second frame body 13 is inserted on the ground.
The jumper 11 having such a structure has the characteristics of convenience in construction and easiness in installation.
When the wire spanning frame 11 is erected, the first frame body 12 and the top frame 14 are connected firstly, and the top frame 14 is of an arc structure or a semicircular structure; after the first frame body 12 and the top frame 14 are connected, the first frame body 12 is moved to be vertical and connected to the ground, the first frame body 12 is rotated to enable the second end of the top frame 14 to cross the original power line, and at this time, the second frame body 13 and the top frame 14 are connected.
A coupling hole 17 is provided at an end portion of the second end of the top frame 14, and a first magnet 18 is provided inside the coupling hole 17. The top end portion of the second frame body 13 is provided with a blind hole 19, the connecting block 20 in the blind hole 19 can move in the blind hole 19, and the baffle 21 can block the connecting block 20 from falling from the blind hole 19. The second magnet 22 is provided at the tip end of the connection block 20.
When the second frame body 13 and the top frame 14 are connected, the worker lifts the second frame body 13 by hand to make the second magnet 22 approach the connection hole 17, and slowly moves the second frame body 13, so that the second magnet 22 can be quickly and accurately sucked into the connection hole 17 where the first magnet 18 is positioned due to the suction force of the first magnet 18 and the second magnet 22. At this time, the second frame body 13 is placed downwards, and the connecting block 20 can move in the blind hole 19, so that the second magnet 22 and the first magnet 18 are not easy to fall off in the process of moving the second frame body 13 downwards.
In the process of moving down the second frame 13, the first frame 12 is moved so that the top frame 14 moves downward in cooperation with the second frame 13. Then, the second frame body 13 is fixed on the ground, and the first frame body 12 is further stabilized, so that the wire spanning frame 11 is stably arranged on the ground.
Through the mode, the worker can complete the erection of the wire spanning frame 11 without the help of a climbing tool, the construction efficiency is very high, the construction is safer, and the accident that the worker is hurt does not exist.
As shown in fig. 2 and 3, the top frame 14 includes a central frame 23 and side frames 24 disposed at two sides of the central frame 23, a sliding slot 25 is formed in the central frame 23, and a notch is disposed at the top of the central frame 23; a sliding groove 25 is also formed in the side frame 24, and a notch is formed on one side of the side frame 24 facing the central frame 23; a central wire connector 26 is arranged in the sliding groove 25 of the central frame 23, a side wire connector 27 is arranged in the sliding groove 25 of the side frame 24, two ends of the central wire connector 26 are connected with a pulling rope 28, the side wire connector 27 is connected with the central wire connector 26 through a flexible connecting rope 29, and the length of the connecting rope 29 is larger than the distance between the side frame 24 and the central frame 23.
The arrangement of each groove and each notch facilitates the connection of the cable, so that the cable can conveniently cross the wire-spanning frame 11.
The cable is connected in the central connector 26, and other cables to be crossed are connected in the lateral connector 27, and the pull rope 28 is pulled to enable the cables connected in the connectors to cross the original power line, and the cables can be taken down after going to the other side. After the connector is empty, the pull cord 28 on the other side is pulled to pull the connector back. Through the setting of connecting rope 29 for the removal of center connector 26 can drive the removal of lateral part connector 27, and the longer size of connecting rope 29 makes center connector 26 remove in-process lateral part connector 27 and is located the rear position simultaneously, makes each connector remove to be difficult to be blocked, makes the removal more smooth and easy.
The arrangement of the center connector 26 and the side connector 27 makes the wire-crossing convenient and the construction efficiency high.
As shown in fig. 2, the first frame 12 includes a bottom rod 30 and a top rod 31 connected to each other, and the top rod 31 is sleeved outside the bottom rod 30; the side of the top rod 31 forms an extension groove 32, the structure of the extension groove 32 is consistent with that of the sliding groove 25, and the extension groove 32 is communicated with the sliding groove 25 of the center frame 23 and the sliding groove 25 of the side frame 24.
This kind of setting structure of first support body 12 for it can stretch out and draw back, conveniently with cable conductor connection in the connector. Meanwhile, due to the arrangement of the extension groove 32, a worker can connect the cable in the wire connector at a lower position, and construction is more convenient.
As shown in fig. 3, the central connector 26 includes a connector port 34, the connector port 34 is a through hole structure, a pressing bolt 33 screwed with the central connector 26 is disposed on the central connector 26, and a bottom end of the pressing bolt 33 is communicated with the connector port 34.
The connection port 34 of this construction facilitates connection of electrical cables.
Simultaneously, when the construction, need stride across original power line with the cable conductor and remove longer distance, can operate like this:
firstly, the hold-down bolt 33 is screwed and the pull rope 28 is pulled to move the wire connector to the other side to complete wire crossing, and a worker unscrews the hold-down bolt 33 and pulls the wire connector reversely to enable the wire connector to be positioned in the middle of the top frame 14, namely the higher part of the top frame 14; pulling on the pull cords 28 on both sides then allows the connector to stay in this position, with the connector port 34 corresponding to a passage as the hold-down bolt 33 is loosened, pulling the cable allows the cable to pass through the connector port 34 and move. Make the in-process that the pulling cable conductor removed, the cable conductor is in higher position all the time, makes the cable conductor more can not contact original power line, ensures construction safety.
As shown in fig. 2, the bottom of the top rod 31 comprises a sleeve 35, and the sleeve 35 is sleeved outside the bottom rod 30; the outer side of the sleeve 35 is provided with a jacking bolt 36 penetrating through the side wall of the sleeve 35. The movable and telescopic structure of the first frame body 12 makes the wiring more convenient.
As shown in fig. 6, the first protection net 15 and the second protection net 16 are symmetrically arranged; the first protection net 15 is arranged on the protection frame 37, and the top end of the protection frame 37 is bent towards the original power line. The protective net arranged in this way can protect workers more effectively.
The first protection net 15 is lower than the original power line. This arrangement makes it safer.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A construction method of a tension type power line protection net is characterized by comprising the following steps:
erecting a wire spanning frame: the cross-line frame comprises a first frame body, a second frame body and an arc-shaped top frame, wherein the first frame body is erected on one side of the original electric power circuit, the second frame body is erected on the other side of the original electric power circuit, and the top frame is made to cross over the original electric power circuit and is connected with the first frame body and the second frame body; the top frame is connected to the first frame body and fixed on the ground, the top frame crosses over the original power line, the second frame body and the top frame are connected, and then the second frame body is fixed on the ground; the top frame is provided with a wire connector, and the wire connector can slide on the top frame;
the top frame is provided with a first end and a second end, the second end is provided with a connecting hole which is arranged downwards, and a first magnet is arranged in the connecting hole; the top end of the second frame body is provided with a blind hole, a connecting block is placed in the blind hole, a blocking piece detachably connected with the second frame body is arranged at an orifice of the blind hole, the height of the connecting block is smaller than that of the blind hole, so that the connecting block can move in the blind hole, and the blocking piece blocks the connecting block from being separated from the blind hole; a second magnet is arranged at the top end of the connecting block, and the end part of the second magnet extends to the outside of the blind hole;
connecting the first end of the top frame to the top end of the first frame body, and vertically inserting the first frame body on the ground; rotating the first frame body to enable the second end of the top frame to cross over the original power circuit; moving the second frame body to enable the top end of the second frame body to be close to the second end, enabling the second magnet to be sucked into the first magnet in the connecting hole, enabling the second frame body to be connected with the top frame, and inserting the second frame body on the ground;
setting up a protection net: a first protective net is erected between the first frame body and the original power line; a second protective net is erected between the second frame body and the original power line;
and (3) cross-line construction: connecting the cable to the wire connector, and moving the wire connector to the other side of the original power line to enable the cable to cross the original power line.
2. The construction method of the tension-type power line protection net according to claim 1, wherein the top frame comprises a central frame and side frames arranged at two sides of the central frame, a sliding groove is formed in the central frame, and a notch is formed at the top of the central frame; a chute is also formed in the side frame, and a notch is formed in one side of the side frame, which faces the center frame; set up central wire connector in the spout of center frame, set up the lateral part connector in the spout of side bearer, the stay cord is all connected at the both ends of central wire connector, the lateral part connector passes through flexible connection rope and connects the central wire connector, the length of connecting the rope is greater than the distance between side bearer and the center frame.
3. The construction method of the tension-type power line protection net according to claim 2, wherein the first frame body comprises a bottom rod and a top rod which are connected with each other, and the top rod is sleeved outside the bottom rod; the side part of the ejector rod forms an extension groove, the structure of the extension groove is consistent with that of the sliding groove, and the extension groove is communicated with the sliding groove of the center frame and the sliding groove of the side frame.
4. The construction method of tension-type power line protection net according to claim 3, wherein the central wire connector comprises a wire connection port, the wire connection port is a through hole structure, a compression bolt screwed with the central wire connector is arranged on the central wire connector, and the bottom end of the compression bolt is communicated with the wire connection port.
5. The construction method of the tension-type power line protection net according to claim 4, wherein the bottom of the top rod comprises a sleeve, and the sleeve is sleeved outside the bottom rod; and a jacking bolt penetrating through the side wall of the sleeve is arranged on the outer side of the sleeve.
6. The construction method of the tension-type power line protection net according to claim 5, wherein the first protection net and the second protection net are symmetrically arranged; first protection network sets up on the protection frame, and the top of protection frame is towards original power line buckles.
7. The method of constructing a tension-type power line protection grid according to claim 6, wherein the first protection grid is lower than the original power line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710964000.7A CN109672112B (en) | 2017-10-16 | 2017-10-16 | Construction method of tension type power line protection net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710964000.7A CN109672112B (en) | 2017-10-16 | 2017-10-16 | Construction method of tension type power line protection net |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109672112A CN109672112A (en) | 2019-04-23 |
| CN109672112B true CN109672112B (en) | 2020-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710964000.7A Expired - Fee Related CN109672112B (en) | 2017-10-16 | 2017-10-16 | Construction method of tension type power line protection net |
Country Status (1)
| Country | Link |
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| CN (1) | CN109672112B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2206277Y (en) * | 1994-08-31 | 1995-08-30 | 王来辉 | Elevator roll type crossing frame |
| JP2007020381A (en) * | 2005-07-07 | 2007-01-25 | Kawakita Electrical Construction Engineering Co Ltd | Partial suspending tensile cabling technique |
| CN102983528A (en) * | 2012-12-07 | 2013-03-20 | 中铁十九局集团电务工程有限公司 | Overhead cable scaffold |
| CN203813325U (en) * | 2014-04-29 | 2014-09-03 | 国家电网公司 | Extension ladder and transmission line crossing rack having same |
| CN205355673U (en) * | 2016-01-06 | 2016-06-29 | 扬州市振东电力器材有限公司 | High -speed railway of not stopping transport across device's span beam rotary mechanism |
| CN106229890A (en) * | 2016-07-28 | 2016-12-14 | 郑州东辰科技有限公司 | Across obstacle Poling Construction protection structure |
| CN206225896U (en) * | 2016-12-10 | 2017-06-06 | 中铁二十局集团电气化工程有限公司 | A kind of crossing frame capping net system of leap high-speed railway |
| CN206364443U (en) * | 2016-11-01 | 2017-07-28 | 国家电网公司 | A kind of block structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8648254B2 (en) * | 2010-04-27 | 2014-02-11 | Michels Corporation | Device and method for stringing overhead cable |
-
2017
- 2017-10-16 CN CN201710964000.7A patent/CN109672112B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2206277Y (en) * | 1994-08-31 | 1995-08-30 | 王来辉 | Elevator roll type crossing frame |
| JP2007020381A (en) * | 2005-07-07 | 2007-01-25 | Kawakita Electrical Construction Engineering Co Ltd | Partial suspending tensile cabling technique |
| CN102983528A (en) * | 2012-12-07 | 2013-03-20 | 中铁十九局集团电务工程有限公司 | Overhead cable scaffold |
| CN203813325U (en) * | 2014-04-29 | 2014-09-03 | 国家电网公司 | Extension ladder and transmission line crossing rack having same |
| CN205355673U (en) * | 2016-01-06 | 2016-06-29 | 扬州市振东电力器材有限公司 | High -speed railway of not stopping transport across device's span beam rotary mechanism |
| CN106229890A (en) * | 2016-07-28 | 2016-12-14 | 郑州东辰科技有限公司 | Across obstacle Poling Construction protection structure |
| CN206364443U (en) * | 2016-11-01 | 2017-07-28 | 国家电网公司 | A kind of block structure |
| CN206225896U (en) * | 2016-12-10 | 2017-06-06 | 中铁二十局集团电气化工程有限公司 | A kind of crossing frame capping net system of leap high-speed railway |
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| Publication number | Publication date |
|---|---|
| CN109672112A (en) | 2019-04-23 |
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