CN113471870B - Method for replacing bridge in cable tunnel on line - Google Patents
Method for replacing bridge in cable tunnel on line Download PDFInfo
- Publication number
- CN113471870B CN113471870B CN202110818826.9A CN202110818826A CN113471870B CN 113471870 B CN113471870 B CN 113471870B CN 202110818826 A CN202110818826 A CN 202110818826A CN 113471870 B CN113471870 B CN 113471870B
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- Prior art keywords
- bridge
- cable
- replaced
- bridge frame
- new
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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
-
- 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
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/08—Installations of electric cables or lines in or on the ground or water in tunnels
Abstract
The invention provides a method for replacing a bridge in a cable tunnel on line, which comprises the following steps: removing a cable tie used for binding the cable on the bridge frame to be replaced, and hanging the cable; removing screws for fixing the bridge frame to be replaced and the original support arm and connecting screws for the bridge frame to be replaced in sequence, and taking out the bridge frame to be replaced; removing a connecting screw between the original bracket arm and the upright post, and then taking out the bracket arm; mounting the new bracket arm on the upright post, and adjusting the levelness and elevation of the new bracket arm; installing the new bridge in sections in sequence; and after the new bridge frame is installed, the lifted cable is restored to the new bridge frame. The original bridge frame and the support arm are sequentially removed, and then the support arm and the bridge frame are sequentially installed, so that the bridge frame replacement device is suitable for replacing the bridge frame in a narrow space without using large devices or large measures.
Description
Technical Field
The invention relates to the technical field of smelting, in particular to a method for replacing a bridge in a cable tunnel on line.
Background
For a long time, a cable bridge in a cable tunnel is difficult to replace, a plurality of cables are generally arranged on the bridge, all the cables are difficult to cut off power, the space in the tunnel is narrow, the bridge is distributed in a multilayer mode, and the bridge is difficult to replace by means of a large device.
The replacement of the bridge in the tunnel has a technical gap, so that it is necessary to provide a method for replacing the cable bridge in the cable tunnel on line.
Disclosure of Invention
In view of the above, the invention provides a method for online replacing a bridge in a cable tunnel, and aims to solve the problem that the bridge is difficult to replace due to the narrow space in the existing tunnel.
The invention provides a method for replacing a bridge in a cable tunnel on line, which comprises the following steps: a cable hanging step, namely removing a cable tie used for binding the cable on the bridge to be replaced and hanging the cable; a bridge frame removing step, namely removing screws for fixing the bridge frame to be replaced and the original support arm and connecting screws for the bridge frame to be replaced in sequence, and then taking out the bridge frame to be replaced; a bracket arm dismantling step, namely dismantling a connecting screw between the original bracket arm and the upright post, and then taking out the bracket arm; a bracket arm mounting step, namely mounting the new bracket arm on the upright post, and adjusting the levelness and elevation of the new bracket arm; a bridge frame mounting step, namely mounting the new bridge frame in sections in sequence; and a cable recovery step, namely recovering the lifted cable to the new bridge after the new bridge is installed.
Further, in the method for replacing the bridge in the cable tunnel on line, in the cable hanging step, the cable is hung on the cable hanging rack after being hung.
Further, in the method for replacing the bridge in the cable tunnel online, the cable hanger comprises: a support part and two hanging parts; the two hanging parts are arranged at the bottom of the supporting part and are respectively arranged at two sides of the supporting part and used for hanging two cables respectively.
Further, in the method for replacing the bridge in the cable tunnel on line, the hanging part is of an arc-shaped structure and is provided with an upward opening.
Further, in the method for replacing the bridge in the cable tunnel on line, the cable hanger is arranged on the layer of the bridge above the bridge to be replaced.
Further, in the method for replacing the bridge frame in the cable tunnel on line, in the step of dismantling the support arm, before taking out the support arm, the position of the support arm is marked; and in the step of mounting the supporting arm, mounting a new supporting arm according to the marked position of the supporting arm.
Further, in the method for replacing the bridge in the cable tunnel on line, in the bridge removing step, the connecting screws between the bridge sections to be replaced are removed, the bridge sections to be replaced are taken out in sequence in sections, the bridge sections to be replaced are transported out of the tunnel, and the bridge sections to be replaced are stacked in a preset place.
Further, in the bridge installation step, a section of new bridge is installed on the new bracket arm, two sections of new bridges are connected and fixed, and each section of new bridge is installed and fixed in sequence.
Further, before the bridge frame removing step and the bracket arm removing step, the method for replacing the bridge frame in the cable tunnel on line further comprises the following steps: and spraying, namely spraying a rust remover on the screw to be removed.
Further, in the method for replacing the bridge in the cable tunnel on line, in the step of removing the bridge and the step of removing the bracket, if the screw cannot be removed, a polishing machine is used for cutting the screw which cannot be removed.
The method for replacing the bridge in the cable tunnel on line provided by the invention has the advantages that the original bridge and the support arm are sequentially detached, and then the support arm and the bridge are sequentially installed, so that the method is suitable for replacing the bridge in a narrow space without using a large device or a large measure. The method meets the construction operation of replacing the bridge frame in the cable tunnel on line, guarantees the construction safety and the working efficiency of bridge frame replacement to a certain extent, effectively solves the problem of difficult bridge frame replacement, is simple and rapid, and effectively saves the construction period and the construction cost.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic structural diagram of a bridge in a cable tunnel according to an embodiment of the present invention;
FIG. 2 is a front view of a method for replacing a bridge in a cable tunnel in-line according to an embodiment of the present invention;
FIG. 3 is a side view of a method for replacing a bridge in-line within a cable tunnel according to an embodiment of the present invention;
fig. 4 is a flowchart of a method for replacing a bridge in a cable tunnel online according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 3, preferred structures of a bridge support framework in a cable tunnel according to an embodiment of the present invention are shown. As shown, the bridge support structure comprises: the device comprises at least two upright posts 1, a plurality of support arms 2 and a bridge 3; wherein, two at least stands 1 lay the direction along cable 4 and set up side by side and interval, play the supporting role to support trailing arm 2 and crane span structure 3, make it erect and predetermine the high position, and then realize cable 4's support and erect. A plurality of support arms 2 are arranged on each upright 1 side by side and at intervals along the length direction (vertical direction shown in fig. 2) of the upright 1, and the corresponding support arms 2 on each upright 1 can be located at the same height position to respectively support different positions (left and right ends shown in fig. 3) of the bridge 3, thereby ensuring the stability of the bridge 3. A bridge frame 3 is arranged above the bracket arms 2 to support a cable 4. In this embodiment, the bridge 3 may be a stepped cable bridge, the bridge 3 is divided into a plurality of sections along the length direction, in the figure, the bridge 3 is a section, the bottom of any section of the bridge 3 is supported by at least two support arms 2, and any two adjacent sections of the bridge 3 are connected and fixed by a connecting plate and screws. To facilitate the replacement of the bridge 3, a cable hanger 5 may be provided above the bridge to be replaced for hanging the cable 4 to avoid the cable 4 interfering with the on-line replacement of the bridge 3. The cable hanger 5 may be disposed on the previous layer of the bridge above the bridge to be replaced, as shown in the figure, in this embodiment, the third layer of the bridge is replaced as an example, and the cable hanger 5 is disposed on the second side bridge.
With continued reference to fig. 1-3, the bridge 3 includes: the bridge comprises two bridge edges 31 arranged side by side and at intervals and a bridge support 32 arranged between the two bridge edges 31 and arranged side by side along the length direction of the bridge edges 31. The two ends of the bridge strut 32 are connected to the two bridge edges respectively to form a ladder structure.
With continued reference to fig. 1-3, the cable hanger 5 may include: a support portion 51 and two hanging portions 52; the two hanging portions 52 are provided at the bottom of the support portion 51 (with respect to the position shown in fig. 2) and at both sides of the support portion 51 (left and right sides as shown in fig. 2), respectively, for hanging the two cables 4. Specifically, the supporting portion 51 may be a rod-shaped structure, and the top portion thereof may be provided with a hook portion 53 for hanging on the bridge 32 of the bridge 3 to fix the cable hanger 5. The hanging portion 52 may be an arc-shaped structure, which has an opening disposed upward, so that the cable 4 is placed in the hanging portion 52 from the opening to hang and support the cable 4. The two hanging portions 52 may be symmetrically disposed about the support portion 51 to avoid interference between the two cables 4 hung by the two hanging portions 52 and ensure the cables 4 to be placed in order.
Referring to fig. 4, it is a block flow diagram of a method for replacing a bridge rack in a cable tunnel online according to an embodiment of the present invention. As shown, the method comprises the following steps:
and a cable hanging step S1, removing a cable tie used for binding the cable on the bridge to be replaced, and hanging the cable.
Specifically, first, the cable ties for binding the cables 4 on the bridge to be replaced are released, and then the cables 4 are lifted and hung, and can be hung on the cable hanger 5, and the cable hanger 5 can be hung on the bridge on the previous layer.
And a spraying step S2, spraying a rust remover on the screw to be dismantled.
Specifically, a rust remover is sprayed on the screw to be removed, namely the screw to be removed in advance, wherein the screw to be removed comprises: the connecting screw is used for connecting the bridge to be replaced and the original bracket, the connecting screw is used for connecting the bridge section to be replaced and the connecting screw is used for connecting the original bracket and the upright post.
And a bridge frame dismounting step S3, dismounting the screws for fixing the bridge frame to be replaced and the original support arm and the connecting screws for the bridge frame to be replaced in sequence, and taking out the bridge frame to be replaced.
Specifically, firstly, screws for fixing the bridge frame to be replaced and the original support arm are removed, and then connecting screws for the bridge frame to be replaced, such as connecting screws between sections in the bridge frame to be replaced, namely connecting screws between two adjacent sections of the bridge frame are removed; and finally, taking out the bridge to be replaced, transporting the bridge to be replaced out of the tunnel, and stacking the bridge at a preset place, namely an appointed place. The screws which cannot be detached under special conditions can be cut by adopting a handheld polishing machine, and cutting by using fire cutting modes such as oxygen, acetylene and the like is forbidden, so that fire disasters in the tunnel are prevented. The screws for fixing the bridge frame to be replaced and the original support arm and the connecting screws for replacing the bridge frame cannot be detached can be cut by adopting a handheld polishing machine, and fire cutting modes such as oxygen and acetylene are forbidden to be used for cutting so as to prevent fire in the tunnel. When the bridge frame to be replaced is taken out, each bridge frame can be taken out in sequence in a segmented mode, and each bridge frame is transported out of the tunnel and stacked in a preset place, namely a designated place.
And a bracket arm dismantling step S4, dismantling the connecting screw between the original bracket arm and the upright post, and taking out the bracket arm.
Specifically, the connecting screw between the original bracket arm and the upright post 1 can be removed, and the original bracket arm can be taken out. Before the original supporting arm is removed, a marking pen can be used for marking the position of the supporting arm. Meanwhile, the screws which cannot be detached can be cut by adopting a handheld polishing machine, and the screws are forbidden to be cut by using flame cutting modes such as oxygen, acetylene and the like, so that fire disasters in the tunnel are prevented.
And a bracket arm mounting step S5, mounting the new bracket arm on the upright post, and adjusting the levelness and elevation of the new bracket arm.
Specifically, the new bracket arm can be installed on the upright post 1 through screws, and the marked position can be made for installation, so that the initial installation of the new bracket arm is realized; and then adjusting the levelness and height of the new supporting arm, namely the elevation.
And a bridge frame mounting step S6, mounting the new bridge frames in a segmental mode in sequence.
Specifically, a section of new bridge frame is fixed on a new supporting arm through screws, then a section of new bridge frame is fixed on the new supporting arm through screws, two sections of new bridge frames are connected and fixed through screws, and each section of new bridge frame is sequentially fixed and installed; that is, each subsequent section of the bridge is installed according to this step.
And a cable recovery step S7, wherein the lifted cable is recovered to the new bridge after the new bridge is installed.
Specifically, after the new bridge is installed, the lifted cable 4 is restored to the new bridge and can be bound and fixed through a cable binding band.
In summary, according to the method for replacing the bridge in the cable tunnel on line provided by this embodiment, after the original bridge and the support arm are sequentially removed, the support arm and the bridge are sequentially installed, and the method is applicable to replacing the bridge in a narrow space without using a large device or a large measure. The method meets the construction operation of replacing the bridge frame in the cable tunnel on line, guarantees the construction safety and the working efficiency of bridge frame replacement to a certain extent, effectively solves the problem of difficult bridge frame replacement, is simple and rapid, and effectively saves the construction period and the construction cost.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (1)
1. A method for replacing a bridge in a cable tunnel on line is characterized by comprising the following steps:
a cable hanging step, namely removing a cable tie used for binding the cable on the bridge to be replaced, and hanging the cable on a cable hanger; the cable hanging rack is arranged on the upper layer of the bridge above the bridge to be replaced;
spraying, namely spraying a rust remover on the screw to be dismantled; wherein, the screw that needs to demolish includes: screws of the bridge to be replaced and the original bracket, connecting screws between bridge sections to be replaced and connecting screws between the original bracket and the upright post;
a bridge frame removing step, namely removing screws for fixing the bridge frame to be replaced and the original support arm and connecting screws for the bridge frame to be replaced in sequence, and then taking out the bridge frame to be replaced;
a bracket arm dismantling step, namely dismantling a connecting screw between the original bracket arm and the upright post, and then taking out the bracket arm;
a bracket arm mounting step, namely mounting the new bracket arm on the upright post, and adjusting the levelness and elevation of the new bracket arm;
a bridge frame mounting step, namely mounting the new bridge frame in sections in sequence;
a cable recovery step, namely recovering the lifted cable to a new bridge frame after the new bridge frame is installed;
the cable hanger includes: a support part and two hanging parts; the two hanging parts are arranged at the bottom of the supporting part and are respectively arranged at two sides of the supporting part and used for hanging two cables respectively;
the hanging part is of an arc-shaped structure and is provided with an upward opening;
the cable hanger is arranged on the upper layer of the bridge above the bridge to be replaced;
in the step of detaching the bracket arm, before the bracket arm is taken out, the position of the bracket arm is marked; in the step of mounting the bracket arm, mounting a new bracket arm according to the marked position of the bracket arm;
in the bridge frame dismantling step, dismantling connecting screws between bridge frame sections to be replaced, taking out the bridge frames to be replaced in sequence in sections, transporting the bridge frames to be replaced out of the tunnel, and stacking the bridge frames to be replaced at a preset place;
in the bridge frame installation step, a section of new bridge frame is installed on a new supporting arm, then a section of new bridge frame is installed on the new supporting arm, two sections of new bridge frames are fixedly connected, and each section of new bridge frame is sequentially installed and fixed;
in the bridge frame removing step and the bracket removing step, if the screw cannot be removed, a polishing machine is used for cutting the screw which cannot be removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110818826.9A CN113471870B (en) | 2021-07-20 | 2021-07-20 | Method for replacing bridge in cable tunnel on line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110818826.9A CN113471870B (en) | 2021-07-20 | 2021-07-20 | Method for replacing bridge in cable tunnel on line |
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| Publication Number | Publication Date |
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| CN113471870A CN113471870A (en) | 2021-10-01 |
| CN113471870B true CN113471870B (en) | 2022-12-23 |
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| CN202110818826.9A Active CN113471870B (en) | 2021-07-20 | 2021-07-20 | Method for replacing bridge in cable tunnel on line |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201742063U (en) * | 2010-07-15 | 2011-02-09 | 东莞市深通实业有限公司 | Combination cable bracket |
| CN109650276A (en) * | 2018-12-31 | 2019-04-19 | 宁波二十冶建设有限公司 | A kind of multi-layer cable gantry more changing device and construction method |
| CN112952661B (en) * | 2021-04-08 | 2021-12-21 | 北京市第三建筑工程有限公司 | Installation structure and construction method for laying cable in narrow space |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101064431A (en) * | 2006-04-29 | 2007-10-31 | 江苏省电力公司常州供电公司 | Method for replacing 10kV distributing transformer with charge |
| CN201584714U (en) * | 2009-12-10 | 2010-09-15 | 广州广船国际股份有限公司 | Protective device for secondary pulling and putting of cables |
| CN108072950A (en) * | 2016-11-16 | 2018-05-25 | 刘伟华 | Optical fiber cable fitting replaces stent |
| CN107508212A (en) * | 2017-08-25 | 2017-12-22 | 扬中市扬子铝加工有限公司 | A kind of portable installs aluminium alloy cable support |
| CN208185837U (en) * | 2018-03-26 | 2018-12-04 | 广东金来电气有限公司 | A kind of column trailing arm installation |
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| CN111410113A (en) * | 2020-03-26 | 2020-07-14 | 李艳东 | Auxiliary replacing tool for cable bridge |
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| CN113471870A (en) | 2021-10-01 |
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