CN116526372B - Method for laying cable by means of large-caliber drainage pipeline - Google Patents
Method for laying cable by means of large-caliber drainage pipeline Download PDFInfo
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- CN116526372B CN116526372B CN202310805186.7A CN202310805186A CN116526372B CN 116526372 B CN116526372 B CN 116526372B CN 202310805186 A CN202310805186 A CN 202310805186A CN 116526372 B CN116526372 B CN 116526372B
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- ladder
- handrails
- handrail
- wellhead
- pipeline
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000002265 prevention Effects 0.000 claims abstract description 21
- 238000010276 construction Methods 0.000 abstract description 18
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 description 8
- 230000004888 barrier function Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Classifications
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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
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
- H02G1/08—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling
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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
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
-
- 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
- H02G9/10—Installations of electric cables or lines in or on the ground or water in cable chambers, e.g. in manhole or in handhole
Abstract
The invention belongs to the technical field of cable construction, and particularly relates to a method for laying cables by means of drainage pipelines, which comprises the following steps: step 1: threading a cable along a drainage pipeline; step 2: the constructor enters from a wellhead along the drainage pipeline and stands on a lower shaft ladder assembly at the wellhead; the anti-falling ladder is characterized in that the down-hole ladder assembly consists of a first ladder and a second ladder which are connected in a sliding way, a plurality of first clamping parts are arranged at intervals on two sides of the down-hole ladder assembly, and an anti-falling fence is arranged on the back surface of the down-hole ladder assembly; step 3: extending the second step to the bottom of the pipeline, standing a constructor on a proper second cross rod, hooking a cable at the bottom of the drainage pipeline, and fixing the cable by using a first clamping part; step 4: a constructor drills out a pipeline from a wellhead, fixes the first fixing part with the bottom of the wellhead, and covers the well cover; therefore, the invention has the beneficial effects of convenient logging operation, overhead laying of cables, good construction experience, falling prevention and the like.
Description
Technical Field
The invention belongs to the technical field of cable construction, and particularly relates to a method for laying cables by means of a large-caliber drainage pipeline.
Background
Because of the large typhoon weather in summer in the south, the diameter of the large-caliber drainage pipeline can reach 3 meters in order to prevent urban waterlogging; at present, because the cable laying pipeline is in shortage of resources, in order to fully utilize the resources, the cable is laid in the drainage pipeline in many places; at present, a large-caliber drainage pipeline is internally provided with a cable, for example, sewage is inevitably present at the bottom of the drainage pipeline due to long-time use, and when the drainage pipeline needs to be used in a well, people need to work in the sewage, so that special waterproof equipment needs to be worn; the large-caliber drainage pipeline is inconvenient to construct because equipment such as rope ladders and the like are needed to be prepared due to the fact that the caliber is too large; the cable is placed in the sewage at the bottom of the drainage pipeline, so that the cable is easy to wind and difficult to distinguish, and the sewage can corrode the cable to cause accidents such as electric leakage and the like;
as in the prior art CN217307221U discloses a pipe rack cable support device, including buried pipeline, its characterized in that: a plurality of groups of annular pipe frames are uniformly distributed on the inner side of the buried pipeline, a plurality of groups of supporting plates with different lengths are symmetrically fixed on the inner side of the annular pipe frames, the supporting plates are used for supporting coarse cables and fine cables which are erected, and the annular pipe frames and the supporting plates are combined to form a gap for accommodating one person to pass through; the inner side of the supporting plate is provided with a sliding groove, the inner side of the sliding groove is connected with a first fixing component and a second fixing component in a sliding mode, and the first fixing component and the second fixing component are used for fixing thick cables and thin cables which are freely distributed.
Disclosure of Invention
In order to solve the problems, the invention aims to disclose a method for laying cables by means of a large-caliber drainage pipeline, which is realized by adopting the following technical scheme.
A method of cabling with a large bore drain line, comprising the steps of:
step 01: threading a cable along the large-caliber drainage pipeline from a wellhead of the large-caliber drainage pipeline;
step 02: a constructor enters the large-caliber drainage pipeline from a wellhead along the large-caliber drainage pipeline and stands on a well ladder assembly at the wellhead;
the anti-falling well ladder is characterized in that the upper end of the well ladder assembly is fixed at the bottom of a well mouth, the well ladder assembly is composed of a first ladder and a second ladder, the second ladder and the first ladder are in sliding connection, when the second ladder slides upwards to a limit, the second ladder and a first ladder spring are fixedly inserted, the first ladder is composed of two parallel first handrails and a plurality of parallel first cross bars positioned between the two first handrails, the first cross bars are distributed along the length direction of the first handrails, two ends of the first cross bars are respectively fixed with the two first handrails, a plurality of first clamping parts are arranged on the left side wall of the first handrail on the left side and the right side wall of the first handrail on the right side at intervals, one anti-falling rail is arranged on the back of the first ladder, the anti-falling rail is composed of two anti-falling cross bars and a plurality of parallel anti-falling longitudinal bars positioned between the two anti-falling cross bars, two ends of the anti-falling longitudinal bars are respectively fixed with the two anti-falling cross bars along the length direction of the anti-falling longitudinal bars, the two anti-falling longitudinal bars are respectively connected with the corresponding first cross bars on the back sides, and the first cross bars are connected with the first pivot parts on the left side and the first cross bars on the right side of the left side of the first handrail are fixedly contacted with the bottom of the well mouth;
the second ladder consists of two second handrails and a plurality of parallel second cross bars positioned between the second handrails, the second cross bars are distributed along the length direction of the second handrails, and two ends of the second cross bars are respectively fixed with the two second handrails;
step 03: extending the second-stage ladder to the bottom of the pipeline, standing a constructor on a proper second cross rod, fixing the constructor and the second-stage ladder by using a safety rope, hooking a cable at the bottom of the large-caliber drainage pipeline by using a hook, and fixing the cable on a corresponding first clamping part;
step 04: the constructor untwists the safety rope, drills out the pipeline from the wellhead, rotates the anti-falling fence, fixes the first fixing part with the bottom of the wellhead and covers the manhole cover.
The method for laying the cable by means of the large-caliber drainage pipeline is characterized in that when the anti-falling transverse rod is attached to the corresponding first handrail, the anti-falling longitudinal rod is attached to the corresponding first transverse rod.
The method for laying the cable by means of the large-caliber drainage pipeline is characterized in that a sliding cavity is formed in the first handrail along the length direction, a sliding long hole communicated with the sliding cavity is formed in one side surface of the two first handrails opposite to each other along the length direction of the first handrail, a limiting hole communicated with the sliding cavity is formed in the upper portion of the side wall of the first handrail on the front face of the first ladder, an extending edge is respectively formed in the second handrail on two sides, a limiting bolt capable of being inserted into the limiting hole is arranged on the upper portion of the extending edge, the limiting bolt stretches out and draws back through a spring, two sliding blocks are arranged on the upper portion of the side wall of the second handrail, the sliding blocks are located in the corresponding sliding cavity and can slide along the corresponding sliding cavity, the sliding blocks are fixedly connected with the corresponding second handrail through connecting rods, and the connecting rods are located in the corresponding sliding long holes.
The method for laying the cable by means of the large-caliber drainage pipeline is characterized in that in the step 04, after a constructor untwists the safety rope, the constructor packs up the second ladder, and inserts the limiting bolt into the limiting hole.
The method for laying cables by means of the large-caliber drainage pipeline is characterized in that a plurality of second clamping components are arranged on the left side wall of the left second handrail and the right side wall of the right second handrail at intervals.
The method for laying the cable by means of the large-caliber drainage pipeline is characterized in that the second clamping component is formed by encircling a second upper hoop and a second lower hoop, the second lower hoop is fixed with a corresponding second handrail, and the second upper hoop is in pivot connection with the corresponding second handrail.
The method for laying cables by means of the large-caliber drainage pipeline is characterized in that a third-stage ladder is arranged below a second cross rod at the lowest part, the third-stage ladder is composed of two side rods and a plurality of third cross rods with two ends fixed on the side walls of the two side rods respectively, the two side rods are positioned between the two second handrails, the upper ends of the side rods are respectively and pivotally connected with the corresponding second handrails, a second fixing part is arranged at the lower end of the side rods, and when the third-stage ladder is parallel to the second-stage ladder, the second fixing part is fixedly spliced with the second handrails.
The method for laying cables by means of the large-caliber drainage pipeline is characterized in that the distance between two adjacent third cross bars is the same as the distance between two adjacent second cross bars.
The method for laying cables by means of the large-caliber drainage pipeline is characterized in that the distance between the lowest second cross rod and the uppermost third cross rod is the same as the distance between the two adjacent second cross rods.
The method for cabling by means of the large-caliber drainage pipeline is characterized in that the height of the third-stage ladder is more than or equal to 0.8m.
The method for laying cables by means of the large-caliber drainage pipeline is characterized in that the distance between two adjacent first transverse rods is the same as the distance between two adjacent second transverse rods.
The method for laying cables by means of the large-caliber drainage pipeline is characterized in that when the second ladder extends downwards to the limit, the distance between the lowest first cross rod and the uppermost second cross rod is the same as the distance between the adjacent two first cross rods.
The method for laying the cable by means of the large-caliber drainage pipeline is characterized in that the first clamping component is formed by encircling a first upper hoop and a first lower hoop, the first lower hoop is fixed with a corresponding first handrail, and the first upper hoop is in pivot connection with the corresponding first handrail.
Therefore, the invention has the following beneficial effects:
1. the well ladder assembly is arranged at the well mouth, well equipment such as rope ladders or lifting ropes is not required to be carried during construction, and well entering operation is convenient.
2. The cable can be clamped in the first clamping parts at two sides of the first stage ladder or the second clamping parts at two sides of the second stage ladder, so that the cable is in an overhead laying state in the large-caliber drainage pipeline, and the deposited sewage in the large-caliber drainage pipeline is prevented from corroding the cable sheath.
3. The cable is clamped in the first clamping parts at two sides of the first-stage ladder or the second clamping parts at two sides of the second-stage ladder to further play a role in wire arrangement, so that the cables are prevented from being mutually wound and are rapidly identified, and construction and maintenance are facilitated.
4. When the cable is laid, constructors step on the second-stage ladder without stepping on sewage in the large-caliber drainage pipeline, so that the constructors do not need to wear equipment such as long sleeve boots or rubber clothing, construction is more convenient, and experience of the constructors is better.
5. The setting of second ladder can make constructor step on suitable second horizontal pole, makes the high more suitable constructor of being under construction cable, and the constructor need not to bend the waist during the construction, also can not influence the efficiency of construction operation because the grip point of cable is too high.
6. The anti-falling fence is arranged on the upper portion of the down-hole ladder assembly, and is fixed with the bottom of the wellhead after construction is finished, so that personnel are prevented from falling into the large-caliber drainage pipeline after the manhole cover is opened by mistake.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of the construction method of embodiment 1 of the present invention.
Fig. 2 is a schematic perspective view of a down-hole ladder assembly according to embodiment 1 of the invention.
Fig. 3 is a schematic perspective view of the front surface of the first ladder of embodiment 1 of the present invention.
Fig. 4 is a schematic perspective view of the back surface of the first ladder of embodiment 1 of the present invention.
Fig. 5 is a schematic perspective view of the first ladder of embodiment 1 of the present invention after the falling protection fence is opened.
Fig. 6 is a schematic perspective view of a second ladder according to embodiment 1 of the present invention.
Fig. 7 is an enlarged view of the area a of embodiment 1 of the present invention.
Fig. 8 is a schematic perspective view of a second ladder according to embodiment 2 of the present invention.
Fig. 9 is a schematic perspective view of a second ladder according to embodiment 3 of the invention.
In the figure: 1. the lower ladder assembly 11, first step ladder 111, first handrail, 112, first cross bar, 113, spacing hole, 114, sliding cavity, 115, sliding slot, 116, first clamping component, 117, fall arrest railing, 1171, fall arrest cross bar, 1172, fall arrest vertical pole, 1173, first fixed component, 12, second step ladder, 121, second handrail, 122, second cross bar, 123, spacing bolt, 124, spring, 125, extension edge, 126, connecting rod, 127, slide block, 128, second clamping component, 129, third step ladder, 1291, side bar, 1292, third cross bar, 1293, second fixed component, 2, wellhead, 3, heavy caliber drainage pipe, 4.
Detailed Description
Example 1
Referring to fig. 1 to 7, a method for cabling by means of a large-caliber drainage pipeline comprises the following steps:
step 01: threading a cable along the large-caliber drainage pipeline 3 from a wellhead of the large-caliber drainage pipeline 3;
step 02: a constructor enters the large-caliber drainage pipeline 3 from a wellhead along the large-caliber drainage pipeline 3 and stands on the lower shaft ladder assembly 1 at the wellhead 2;
the vertical falling prevention device is characterized in that the upper end of the down ladder assembly 1 is fixed at the bottom of a wellhead 2, the down ladder assembly 1 is composed of a first ladder 11 and a second ladder 12, the first ladder 11 is composed of two parallel first handrails 111 and a plurality of parallel first cross bars 112 positioned between the two first handrails 111, the first cross bars 112 are distributed along the length direction of the first handrails 111, two ends of the first cross bars 112 are respectively fixed with the two first handrails 111, a sliding cavity 114 is arranged in the first handrails 111 along the length direction, one side surface of the two first handrails 111 opposite to each other forms a sliding long hole 115 communicated with the sliding cavity 114 along the length direction of the first handrails 111, the upper part of the side wall of the first handrail 111 on the front of the first ladder 11 forms a limiting hole 113 communicated with the sliding cavity 114, a plurality of first clamping parts 116 are arranged on the left side wall of the first handrail 111 on the right side wall of the first handrail 111 on the left side, a falling prevention barrier 117 is arranged at intervals along the length direction of the first handrail 111, two falling prevention bars 117 are respectively fixed with the two first handrails 111, a sliding cavity 114 is arranged on the inside the first handrail 111 along the length direction, a sliding cavity 114 is formed by the two sliding cavity 114, when the two sliding bottom 1171 is correspondingly contacted with the two first end 1171 and the first end 1172 of the first vertical falling prevention bar 1171, and the vertical falling prevention device is correspondingly contacted with the first end 1171, and the first end 1172 is correspondingly contacted with the first end 1171 and the first end 1172, and is correspondingly contacted with the first end 1172;
the second ladder 12 is composed of two second handrails 121 and a plurality of parallel second cross bars 122 located between the second handrails 121, the second cross bars 122 are distributed along the length direction of the second handrails 121, two ends of each second cross bar 122 are respectively fixed with the two second handrails 121, each second handrail 121 on two sides is provided with an extension edge 125, the upper part of each extension edge 125 is provided with a limit plug 123 capable of being inserted into a limit hole 113, the limit plug 123 stretches and contracts through a spring 124, the upper part of the side wall of each second handrail 121 is provided with two sliding blocks 127, the sliding blocks 127 are located in corresponding sliding cavities 114 and can slide along the corresponding sliding cavities 114, the sliding blocks 127 are fixedly connected with the corresponding second handrails 121 through connecting rods 126, and the connecting rods 126 are located in corresponding sliding long holes 115;
step 03: pulling out the limiting plug pins 123 from the limiting holes 113, enabling the second-stage ladder 12 to extend towards the bottom of the pipeline, enabling constructors to stand on the proper second cross bars 122, fixing the constructors and the second-stage ladder 12 by using safety ropes, hooking up the cable 4 at the bottom of the large-caliber drainage pipeline 3 by using hooks, and fixing the cable 4 on the corresponding first clamping part 116;
step 4: the constructor untwists the safety rope and stows the second ladder 12, inserts the limit bolt 123 into the limit hole 113, drills out the pipe from the wellhead 2, rotates the falling preventing fence 117, fixes the first fixing part 1173 with the bottom of the wellhead 2, and covers the manhole cover.
Example 2
Turning to fig. 8, and referring to fig. 1-5, and fig. 7, a method for cabling via a large-bore drain line, comprising the steps of:
step 01: threading a cable along the large-caliber drainage pipeline 3 from a wellhead of the large-caliber drainage pipeline 3;
step 02: a constructor enters the large-caliber drainage pipeline 3 from a wellhead along the large-caliber drainage pipeline 3 and stands on the lower shaft ladder assembly 1 at the wellhead 2;
the vertical falling prevention device is characterized in that the upper end of the down ladder assembly 1 is fixed at the bottom of a wellhead 2, the down ladder assembly 1 is composed of a first ladder 11 and a second ladder 12, the first ladder 11 is composed of two parallel first handrails 111 and a plurality of parallel first cross bars 112 positioned between the two first handrails 111, the first cross bars 112 are distributed along the length direction of the first handrails 111, two ends of the first cross bars 112 are respectively fixed with the two first handrails 111, a sliding cavity 114 is arranged in the first handrails 111 along the length direction, one side surface of the two first handrails 111 opposite to each other forms a sliding long hole 115 communicated with the sliding cavity 114 along the length direction of the first handrails 111, the upper part of the side wall of the first handrail 111 on the front of the first ladder 11 forms a limiting hole 113 communicated with the sliding cavity 114, a plurality of first clamping parts 116 are arranged on the left side wall of the first handrail 111 on the right side wall of the first handrail 111 on the left side, a falling prevention barrier 117 is arranged at intervals along the length direction of the first handrail 111, two falling prevention bars 117 are respectively fixed with the two first handrails 111, a sliding cavity 114 is arranged on the inside the first handrail 111 along the length direction, a sliding cavity 114 is formed by the two sliding cavity 114, when the two sliding bottom 1171 is correspondingly contacted with the two first end 1171 and the first end 1172 of the first vertical falling prevention bar 1171, and the vertical falling prevention device is correspondingly contacted with the first end 1171, and the first end 1172 is correspondingly contacted with the first end 1171 and the first end 1172, and is correspondingly contacted with the first end 1172;
the second ladder 12 is composed of two second handrails 121 and a plurality of parallel second cross bars 122 located between the second handrails 121, the second cross bars 122 are distributed along the length direction of the second handrails 121, two ends of each second cross bar 122 are respectively fixed with the two second handrails 121, each second handrail 121 on two sides is provided with an extension edge 125, the upper part of each extension edge 125 is provided with a limit plug 123 capable of being inserted into a limit hole 113, the limit plug 123 stretches and contracts through a spring 124, the upper part of the side wall of each second handrail 121 is provided with two sliding blocks 127, the sliding blocks 127 are located in corresponding sliding cavities 114 and can slide along the corresponding sliding cavities 114, the sliding blocks 127 are fixedly connected with the corresponding second handrails 121 through connecting rods 126, the connecting rods 126 are located in the corresponding long holes 115, and a plurality of second clamping components 128 are arranged on the left side wall of the left side of the second handrails 121 and the right side wall of the left second handrails 121 at intervals;
step 03: pulling out the limiting plug pins 123 from the limiting holes 113, enabling the second-stage ladder 12 to extend towards the bottom of the pipeline, enabling constructors to stand on the proper second cross bars 122, fixing the constructors and the second-stage ladder 12 by using safety ropes, hooking up the cable 4 at the bottom of the large-caliber drainage pipeline 3 by using hooks, and fixing the cable 4 on the corresponding first clamping part 116 and second clamping part 128;
step 4: the constructor untwists the safety rope and drills out the pipe from the wellhead 2, rotates the fall preventing fence 117, and fixes the first fixing part 1173 with the bottom of the wellhead 2, and covers the manhole cover.
The method for laying cable by means of large-caliber drainage pipeline is characterized in that the second clamping component 128 is formed by encircling a second upper hoop and a second lower hoop, the second lower hoop is fixed with a corresponding second handrail 121, and the second upper hoop is pivotally connected with the corresponding second handrail 121.
In this embodiment, the second clamping members 128 are provided on both sides of the second ladder 12, and when the number of cables to be laid is greater than the number of the first clamping members 116 of the first ladder 11, the cables can be clamped to the second clamping members 128.
Example 3
Turning to fig. 9, and referring to fig. 1-5, and fig. 7, a method for cabling via a large-bore drain line, comprising the steps of:
step 01: threading a cable along the large-caliber drainage pipeline 3 from a wellhead of the large-caliber drainage pipeline 3;
step 02: a constructor enters the large-caliber drainage pipeline 3 from a wellhead along the large-caliber drainage pipeline 3 and stands on the lower shaft ladder assembly 1 at the wellhead 2;
the vertical falling prevention device is characterized in that the upper end of the down ladder assembly 1 is fixed at the bottom of a wellhead 2, the down ladder assembly 1 is composed of a first ladder 11 and a second ladder 12, the first ladder 11 is composed of two parallel first handrails 111 and a plurality of parallel first cross bars 112 positioned between the two first handrails 111, the first cross bars 112 are distributed along the length direction of the first handrails 111, two ends of the first cross bars 112 are respectively fixed with the two first handrails 111, a sliding cavity 114 is arranged in the first handrails 111 along the length direction, one side surface of the two first handrails 111 opposite to each other forms a sliding long hole 115 communicated with the sliding cavity 114 along the length direction of the first handrails 111, the upper part of the side wall of the first handrail 111 on the front of the first ladder 11 forms a limiting hole 113 communicated with the sliding cavity 114, a plurality of first clamping parts 116 are arranged on the left side wall of the first handrail 111 on the right side wall of the first handrail 111 on the left side, a falling prevention barrier 117 is arranged at intervals along the length direction of the first handrail 111, two falling prevention bars 117 are respectively fixed with the two first handrails 111, a sliding cavity 114 is arranged on the inside the first handrail 111 along the length direction, a sliding cavity 114 is formed by the two sliding cavity 114, when the two sliding bottom 1171 is correspondingly contacted with the two first end 1171 and the first end 1172 of the first vertical falling prevention bar 1171, and the vertical falling prevention device is correspondingly contacted with the first end 1171, and the first end 1172 is correspondingly contacted with the first end 1171 and the first end 1172, and is correspondingly contacted with the first end 1172;
the second-stage ladder 12 is composed of two second handrails 121 and a plurality of parallel second cross bars 122 positioned between the second handrails 121, the second cross bars 122 are distributed along the length direction of the second handrails 121, two ends of each second cross bar 122 are respectively fixed with the two second handrails 121, each second handrail 121 on two sides is provided with an extension edge 125, the upper part of each extension edge 125 is provided with a limiting plug 123 capable of being inserted into a limiting hole 113, the limiting plug 123 stretches out and draws back through a spring 124, the upper parts of the side walls of each second handrail 121 are provided with two sliding blocks 127, the sliding blocks 127 are positioned in corresponding sliding cavities 114 and can slide along the corresponding sliding cavities 114, the sliding blocks 127 are fixedly connected with the corresponding second handrails 121 through connecting rods 126, the connecting rods 126 are positioned in the corresponding long holes 115, the left side wall of each second handrail 121 and the right side wall of each second handrail 121 on the left side are provided with a plurality of second clamping components 128 at intervals, the lower part of each second handrail 122 is provided with a third-stage ladder 129, each third-stage ladder 129 is composed of two 1291 and a plurality of ends 1291, when the two side walls of each second ladder 1291 are respectively connected with the corresponding second handrails 1291, and 1293 are fixedly connected with the corresponding second handrails 121;
step 03: pulling out the limiting plug pins 123 from the limiting holes 113, enabling the second-stage ladder 12 to extend towards the bottom of the pipeline, enabling constructors to stand on the proper second cross bars 122, fixing the constructors and the second-stage ladder 12 by using safety ropes, hooking up the cable 4 at the bottom of the large-caliber drainage pipeline 3 by using hooks, and fixing the cable 4 on the corresponding first clamping part 116 and second clamping part 128;
step 4: the constructor untwists the safety rope and drills out the pipe from the wellhead 2, rotates the fall preventing fence 117, and fixes the first fixing part 1173 with the bottom of the wellhead 2, and covers the manhole cover.
The method for laying cable by means of large-caliber drainage pipeline is characterized in that the second clamping component 128 is formed by encircling a second upper hoop and a second lower hoop, the second lower hoop is fixed with a corresponding second handrail 121, and the second upper hoop is pivotally connected with the corresponding second handrail 121.
The above-mentioned method for cabling by means of a large-caliber drainage pipeline is characterized in that the distance between two adjacent third cross bars 1292 is the same as the distance between two adjacent second cross bars 122.
The above-mentioned method for cabling through a large-caliber drainage pipeline is characterized in that the interval between the lowermost second cross bar 122 and the uppermost third cross bar 1292 is the same as the interval between two adjacent second cross bars 122.
The method for laying cables by means of large-caliber drainage pipelines is characterized in that the height of the third stage 129 is more than or equal to 0.8m.
In this embodiment, the second ladder 12 is provided with the reversible third ladder 129, when the second clamping member 128 clamps the full cable 4, the constructor cannot reach the other side of the lower ladder assembly 1 for construction, at this time, the constructor can pull out the second fixing member 1293, further release the fixing of the second handrail 121 and the second fixing member 1293, and flip the third ladder 129 upwards, and the constructor can pass through the lower ladder assembly 1 to construct at the other side of the lower ladder assembly 1.
A method of cabling through a large diameter drain pipeline according to any of the above embodiments, wherein the spacing between two adjacent first rails 112 is the same as the spacing between two adjacent second rails 122.
A method of cabling through a large diameter drain pipeline according to any of the above embodiments, wherein when the second ladder 12 is extended downwardly to a limit, the spacing between the lowermost one of the first rails 112 and the uppermost one of the second rails 122 is the same as the spacing between adjacent ones of the first rails 112.
The method for laying a cable through a large-caliber drainage pipeline according to any of the foregoing embodiments is characterized in that the first clamping member 116 is formed by encircling a first upper hoop and a first lower hoop, the first lower hoop is fixed to a corresponding first handrail 111, and the first upper hoop is pivotally connected to the corresponding first handrail 111.
According to the invention, the well ladder assembly 1 is arranged at the well mouth, so that well equipment such as rope ladders or lifting ropes is not required to be carried during construction, and well entering operation is convenient; the cables can be clamped in the first clamping parts 116 at two sides of the first stage ladder 11 or in the second clamping parts 128 at two sides of the second stage ladder 12, so that the cables are in an overhead laying state in the large-caliber drainage pipeline 3, and the deposited sewage in the large-caliber drainage pipeline 3 is prevented from corroding a cable protective layer; the cables are clamped in the first clamping parts 116 at two sides of the first stage ladder 11 or the second clamping parts 128 at two sides of the second stage ladder 12 to play a role in wire arrangement, so that the cables 4 are prevented from being mutually wound and are rapidly identified, and the construction and maintenance are convenient; when the cable is laid, a constructor steps on the second-stage ladder 12 without stepping on sewage in the large-caliber drainage pipeline 3, so that the constructor does not need to wear equipment such as a long boot or rubber clothing, the construction is more convenient, and the experience of the constructor is better; the arrangement of the second ladder 12 can enable a constructor to step on a proper second cross bar 122, so that the height of a constructed cable is more suitable for the constructor, the constructor does not need to bend down during construction, and the efficiency of construction operation is not affected because the clamping point of the cable is too high; the anti-falling fence 117 is arranged on the upper portion of the down ladder assembly 1, and after construction is finished, the anti-falling fence 117 is fixed with the bottom of the wellhead 2, so that personnel can be prevented from falling into the large-caliber drainage pipeline 3 after the manhole cover is opened by mistake.
The above-described embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the present invention. The protection scope of the present invention is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this invention are also within the scope of the invention.
Claims (10)
1. A method of cabling with a large bore drain line, comprising the steps of:
step 01: threading a cable along the large-caliber drainage pipeline (3) from a wellhead of the large-caliber drainage pipeline (3);
step 02: a constructor enters the large-caliber drainage pipeline (3) from a wellhead along the large-caliber drainage pipeline (3) and stands on a lower shaft ladder assembly (1) at the wellhead (2);
the method is characterized in that: the upper end of the down ladder assembly (1) is fixed at the bottom of a wellhead (2), the down ladder assembly (1) is composed of a first ladder (11) and a second ladder (12), the second ladder (12) and the first ladder (11) are connected in a sliding way, when the second ladder (12) slides upwards to a limit, the second ladder (12) and the first ladder (11) are fixed in a spring inserting way, the first ladder (11) is composed of two parallel first handrails (111) and a plurality of parallel first cross bars (112) positioned between the two first handrails (111), the first cross bars (112) are distributed along the length direction of the first handrails (111), two ends of the first cross bars (112) are respectively fixed with the two first handrails (111), a plurality of first clamping components (116) are arranged on the left side wall of the first handrails (111) on the left side and the right side wall of the first handrails (111) on the right side at intervals, a falling prevention fence (117) is arranged on the back of the first ladder (11), the falling prevention fence (117) is composed of two parallel first handrails (111) and a plurality of first cross bars (112) positioned between the two longitudinal falling prevention bars (1171) and the two longitudinal falling prevention cross bars (1172) along the length direction of the two longitudinal falling prevention cross bars (1171) respectively, the upper end of the anti-falling cross rod (1171) is in pivot connection with the back of the corresponding first handrail (111), a first fixing component (1173) is arranged on the anti-falling cross rod (1171), and when the anti-falling cross rod (1171) rotates until the lower end of the anti-falling cross rod (1171) contacts with the bottom of the wellhead (2), the first fixing component (1173) is fixed with the bottom of the wellhead (2); the second ladder (12) is composed of two second handrails (121) and a plurality of parallel second cross bars (122) positioned between the second handrails (121), the second cross bars (122) are distributed along the length direction of the second handrails (121), and two ends of each second cross bar (122) are respectively fixed with the two second handrails (121);
step 03: extending the second step (12) towards the bottom of the pipeline, standing a constructor on a proper second cross rod (122), fixing the constructor and the second step (12) by using a safety rope, hooking a cable (4) at the bottom of the large-caliber drainage pipeline (3) by using a hook, and fixing the cable (4) on a corresponding first clamping part (116);
step 04: the constructor untwists the safety rope, drills out the pipeline from the wellhead (2), rotates the anti-falling fence (117), fixes the first fixing part (1173) with the bottom of the wellhead (2), and covers the manhole cover.
2. A method of cabling through a large bore drain pipeline as defined in claim 1, wherein: the fall arrest longitudinal bar (1172) engages the corresponding first rail (112) when the fall arrest cross bar (1171) engages the corresponding first armrest (111).
3. A method of cabling through a large bore drain pipeline as claimed in claim 2, wherein: the sliding cavity (114) is formed in the first handrail (111) along the length direction, a sliding long hole (115) communicated with the sliding cavity (114) is formed in one side face, opposite to the first handrail (111), of each first handrail (111), a limiting hole (113) communicated with the sliding cavity (114) is formed in the upper portion of the side wall of the first handrail (111) of the front ladder (11), each second handrail (121) on two sides is provided with an extending edge (125), a limiting plug pin (123) capable of being inserted into the limiting hole (113) is arranged on the upper portion of each extending edge (125), the limiting plug pins (123) stretch out and draw back through springs (124), two sliding blocks (127) are arranged on the upper portion of the side wall of each second handrail (121), the sliding blocks (127) are located in the corresponding sliding cavities (114) and can slide in the corresponding sliding cavities (114), the sliding blocks (127) are fixedly connected with the corresponding second handrail (121) through connecting rods (126), and the connecting rods (126) are located in the corresponding sliding long holes (115).
4. A method of cabling through a large bore drain line as claimed in claim 3, wherein: in step 04, after the constructor untwists the safety rope, the constructor stows the second step ladder (12) and inserts the limit bolt (123) into the limit hole (113).
5. A method of cabling through a large diameter drain line as defined in claim 4, wherein: a plurality of second clamping members (128) are arranged on the left side wall of the left second handrail (121) and the right side wall of the right second handrail (121) at intervals.
6. A method of cabling through a large bore drain pipeline as defined in claim 5, wherein: a third-stage ladder (129) is arranged below a second transverse rod (122) at the lowest part, the third-stage ladder (129) is composed of two side rods (1291) and a plurality of third transverse rods (1292) with two ends fixed on the side walls of the two side rods (1291) respectively, the two side rods (1291) are positioned between the two second handrails (121), the upper ends of the side rods (1291) are respectively in pivot connection with the corresponding second handrails (121), a second fixing part (1293) is arranged at the lower ends of the side rods (1291), and when the third-stage ladder (129) is parallel to the second-stage ladder (12), the second fixing part (1293) is fixedly spliced with the second handrails (121).
7. A method of cabling through a large bore drain pipeline as defined in claim 6, wherein: the spacing between two adjacent third crossbars (1292) is the same as the spacing between two adjacent second crossbars (122).
8. A method of cabling through a large diameter drain line as defined in claim 7, wherein: the height of the third stage (129) is 0.8m or more.
9. A method of cabling through a large bore drain pipeline as defined in claim 8, wherein: the spacing between two adjacent first crossbars (112) is the same as the spacing between two adjacent second crossbars (122).
10. A method of cabling through a large bore drain pipeline as claimed in claim 9, wherein: when the second ladder (12) extends downward to a limit, the spacing between the lowermost one of the first crossbars (112) and the uppermost one of the second crossbars (122) is the same as the spacing between adjacent two of the first crossbars (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310805186.7A CN116526372B (en) | 2023-07-03 | 2023-07-03 | Method for laying cable by means of large-caliber drainage pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310805186.7A CN116526372B (en) | 2023-07-03 | 2023-07-03 | Method for laying cable by means of large-caliber drainage pipeline |
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| CN116526372B true CN116526372B (en) | 2023-09-01 |
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| CN109184542A (en) * | 2018-10-09 | 2019-01-11 | 国网山东省电力公司烟台供电公司 | Cable shaft device under a kind of portable auxiliary |
| CN112653027A (en) * | 2021-01-12 | 2021-04-13 | 田云 | Auxiliary laying device for underground cable of power engineering |
| CN214089971U (en) * | 2020-09-10 | 2021-08-31 | 中国电建集团华东勘测设计研究院有限公司 | Water and electricity engineering high tension cable outlet hole export section arrangement structure |
| CN113914368A (en) * | 2021-09-26 | 2022-01-11 | 北京首钢国际工程技术有限公司 | Switching well that underground cable tunnel and cable pit link up |
| CN114922553A (en) * | 2022-05-09 | 2022-08-19 | 国网河南省电力公司汝阳县供电公司 | Electrician climbs and hangs ladder |
| CN115313292A (en) * | 2022-08-29 | 2022-11-08 | 广州电力设计院有限公司 | Cable down-hole and method for laying cable in cable down-hole |
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2023
- 2023-07-03 CN CN202310805186.7A patent/CN116526372B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184542A (en) * | 2018-10-09 | 2019-01-11 | 国网山东省电力公司烟台供电公司 | Cable shaft device under a kind of portable auxiliary |
| CN214089971U (en) * | 2020-09-10 | 2021-08-31 | 中国电建集团华东勘测设计研究院有限公司 | Water and electricity engineering high tension cable outlet hole export section arrangement structure |
| CN112653027A (en) * | 2021-01-12 | 2021-04-13 | 田云 | Auxiliary laying device for underground cable of power engineering |
| CN113914368A (en) * | 2021-09-26 | 2022-01-11 | 北京首钢国际工程技术有限公司 | Switching well that underground cable tunnel and cable pit link up |
| CN114922553A (en) * | 2022-05-09 | 2022-08-19 | 国网河南省电力公司汝阳县供电公司 | Electrician climbs and hangs ladder |
| CN115313292A (en) * | 2022-08-29 | 2022-11-08 | 广州电力设计院有限公司 | Cable down-hole and method for laying cable in cable down-hole |
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| Publication number | Publication date |
|---|---|
| CN116526372A (en) | 2023-08-01 |
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