CN213212919U - High-drop high-voltage cable vertical laying device - Google Patents
High-drop high-voltage cable vertical laying device Download PDFInfo
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- CN213212919U CN213212919U CN202021238075.0U CN202021238075U CN213212919U CN 213212919 U CN213212919 U CN 213212919U CN 202021238075 U CN202021238075 U CN 202021238075U CN 213212919 U CN213212919 U CN 213212919U
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- 239000002184 metal Substances 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 230000005484 gravity Effects 0.000 claims description 10
- 238000010276 construction Methods 0.000 abstract description 2
- 238000004458 analytical method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 235000008216 herbs Nutrition 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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Abstract
The application provides a perpendicular laying device of high drop high tension cable includes: the system comprises a cable laying track laid along the height direction of a target shaft, a cable conveying machine used for conveying cables on a cable drum to the shaft, and a cable laying assembly used for laying the cables along the cable laying track; the cable laying assembly comprises a plurality of metal hoops and a plurality of iron chains, wherein the metal hoops are arranged according to preset distances and used for clamping the cable body, one end of each iron chain is connected with the corresponding metal hoop, and the other end of each iron chain is connected with the cable laying track through a wire clamping device. Because the cable traction head is not dragged by a winching machine or a crane in the whole process, the body structure of the cable is not damaged, and the power supply reliability of the cable in the later operation is improved; in addition, equipment such as a cable conveying machine does not need to be additionally installed in the middle of the vertical shaft, only constructors need to operate at a well head and a well bottom, the steps of installing the metal hoop, the wire clamping device and the like are simple, safety problems of the constructors can be guaranteed, and construction efficiency is improved.
Description
Technical Field
The utility model relates to a power cable lays technical field, especially relates to a perpendicular laying device of high drop high tension cable.
Background
The vertical laying and installation of high-drop high-voltage cables is always a key difficult problem in the cable industry. The topography in Chongqing areas is outstanding again, and the cable tunnel has the condition of huge drop generally. The traditional high-drop high-voltage cable laying mode mainly has two kinds: one method is to fix a winching machine at the tail end of cable laying, connect a cable head end traction head with the winching machine by a steel wire rope, and control the cable laying by using the pulling force of the winching machine, the gravity of the cable and the friction force between the cable and the cable on a cable reel and between the cable and the cable reel. This kind of mode causes cable metal sheath to warp, copper core and main insulation dislocation scheduling problem easily because of utilizing the hank mill to pull of cable traction head, brings very big potential safety hazard to the long-time steady operation of later stage cable. Another way is to use a cable feeder for cable laying. A scaffold is built at a cable laying wellhead to place a cable conveying machine, the cable conveying machine is longitudinally fixed in a vertical shaft at intervals by expansion screws or other structures to offset partial gravity of a cable, and the cable is laid by means of the thrust of the cable conveying machine and the gravity of the cable. This kind of mode mechanization degree is high, has effectively solved and has relied on the grinder to cause the problem of damage to cable body structure when the cable laying installation. However, the cable conveying machine is large in size and mass, and when the cable conveying machine is longitudinally installed in the vertical shaft, the safety of constructors and the problems that whether the cable conveying machine can be fixed firmly during later cable laying and the like need to be considered. And when the large-power cable conveying machine is too large in size, the cable conveying machine can be placed into a cable tunnel after being disassembled, time and labor are wasted, and the cable laying efficiency is low. When the cable of the cable reel at the wellhead is not much left, the cable tail end traction head needs to be reversely pulled by the winching machine or the crane in the two modes, and the situation that the cable slips downwards under the control when the gravity of the cable is larger than the friction force provided by the cable conveying machine at a certain position of the vertical shaft is avoided. The method also has the problem of causing damage to the cable body structure.
Therefore, a cable laying device that does not damage a cable is required.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a perpendicular laying device of high drop high tension cable is in order to solve the not enough of prior art.
The application provides a perpendicular laying device of high drop high tension cable, its characterized in that: the method comprises the following steps: the system comprises a cable laying track laid along the height direction of a target shaft, a cable conveying machine used for conveying cables on a cable drum to the shaft, and a cable laying assembly used for laying the cables along the cable laying track;
the cable laying assembly comprises a plurality of metal hoops and a plurality of iron chains, wherein the metal hoops are arranged according to preset distances and used for clamping the cable body, one end of each iron chain is connected with the corresponding metal hoop, and the other end of each iron chain is connected with the cable laying track through a wire clamping device.
Further, the cable laying track is two parallel steel wire ropes which are laid along the height direction of the target shaft and are respectively fixed at two ends.
Furthermore, the size of the cross section of the steel wire rope needs to meet the requirement that two steel wire ropes can bear the gravity of the cable body at the laying section of the vertical shaft without breaking.
Further, a rubber mat is arranged on the inner side of the metal hoop.
The utility model has the advantages of: according to the high-drop high-voltage cable vertical laying device, the cable traction head is not pulled by a winching machine or a crane in the whole process, so that the body structure of the cable is not damaged, and the power supply reliability of the cable in the later operation is improved; in addition, equipment such as a cable conveying machine does not need to be additionally installed in the middle of the vertical shaft, only constructors need to operate at a well head and a well bottom, the steps of installing the metal hoop, the wire clamping device and the like are simple, safety problems of the constructors can be guaranteed, and construction efficiency is improved.
Drawings
The invention will be further described with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is the utility model discloses a stress analysis chart when laying of fixing-line device.
Detailed Description
The invention is further explained by the following combined with the attached drawings of the specification: fig. 1 is a schematic structural diagram of an embodiment of the present invention. Fig. 2 is the utility model discloses a stress analysis chart when laying of fixing-line device. In fig. 1, 1-cable drum; 2-cable conveying machine; 3-a cable; 4-metal hoop; 5-a steel wire rope; 6-vertical shaft; 7-a wire clamping device; 8-an iron chain; 9-U-shaped ring and hook.
The utility model provides a high drop high tension cable lays device perpendicularly, its characterized in that: the method comprises the following steps: as shown in fig. 1, a cable laying track laid along the height direction of a target shaft, a cable conveyer for conveying the cable on a cable drum to the shaft, and a cable laying assembly for laying the cable along the cable laying track;
the cable laying assembly comprises a plurality of metal hoops and a plurality of iron chains, wherein the metal hoops are arranged according to preset distances and used for clamping the cable body, one end of each iron chain is connected with the corresponding metal hoop, and the other end of each iron chain is connected with the cable laying track through a wire clamping device. In this embodiment, the preset distance is 5 meters, and those skilled in the art can adjust the preset distance according to the actual project requirements. The new technology for vertically laying high-drop high-voltage cables takes two steel wire ropes as carriers. Two steel wire ropes are vertically placed into the bottom of a well from a cable laying well head, and the steel wire ropes are tensioned at the well head and the bottom of a vertical shaft and then fixed in parallel. After the cable on the cable reel is placed into the vertical shaft through a cable conveying machine at the position of the vertical shaft, the cable body is clamped by metal hoops (two sections of omega-shaped metal hoops) every 5 meters, and the inner side of the cable body is padded with a rubber mat to protect the outer sheath of the cable. The metal staple bolt both sides are connected with the iron chain through U type ring and couple, and the iron chain opposite side is connected with wire rope through the fixing-line device, carries out cable laying through the normal pressure of adjustment fixing-line device and between the wire rope. When the residual length of the cable reel is small, a winching machine or a crane is not needed to reversely pull the cable, and the tail end cable laying is carried out only by the friction force provided by the cable conveying machine at the wellhead and the upward pulling force of the steel wire rope on the cable.
In this embodiment, the cable transportation machine is an existing cable transportation machine, and the model thereof is selected as follows: for the vertical shafts with different depths, the model of the cable conveying machine at the position of the vertical shaft can be selected through calculation. So as to ensure that the cable conveying machine at the wellhead can be used as a power device and a braking device in any process of cable laying. Setting the rated conveying force of a cable conveying machine as N (kN), the mass of each meter of the cable as m (kg), the gravity acceleration as g (m/s), the depth of a vertical shaft as h (m), the number of sets of tension devices as x, and taking FCombination of Chinese herbs0.8 x 5mg (every 5m is equipped with a set of tension device), so the cable conveyer at the well mouth must meet N>mgh-0.8*5mgx。
In this embodiment, the cable laying track is two parallel steel wire ropes which are laid along the height direction of the target shaft and are fixed at two ends respectively. The size of the section of the steel wire rope is required to meet the requirement that two steel wire ropes can bear the gravity of a cable body at the laying section of the vertical shaft without breaking. The steel cord weight and tensile force table is shown in table 1. And setting the single hoisting gravity of the steel wire ropes with different cross sections as M, respectively pulling the cables on two sides of the cable body by the steel wire ropes through the metal hoops every 5M, wherein the number of the sets of the tension devices is x. Because F is FCombination of Chinese herbsSo that a single wire rope is subjected to a tensile force F2＝xFCombination of Chinese herbsAnd F is2<M。
Table one:
in this embodiment, the metal hoop is provided with a rubber mat on the inner side. Set up the cushion and prevent that the metal staple bolt from causing the harm to the cable when fixed cable.
The utility model provides a high drop high tension cable lays device perpendicularly lays method as follows:
s1: laying a cable laying track, putting two steel wire ropes into a well bottom from a cable laying wellhead, straightening the two steel wire ropes along the height direction of a target shaft, and respectively fixing the two steel wire ropes at the wellhead and the well bottom in a mode that the two steel wire ropes are parallel to each other to form the cable laying track;
s2: placing the cable on the cable reel into a target vertical shaft through a cable conveying machine arranged at the position of the shaft opening, and installing a metal hoop on the cable placed into the target vertical shaft according to a preset distance;
s3: connecting a metal hoop with one end of an iron chain, wherein the other end of the iron chain is connected with a cable laying track through a wire clamping device;
s4: and adjusting the positive pressure between the wire clamping device and the cable laying track to lay the cable.
Step S4 specifically includes adjusting the chuck bolts to adjust the positive pressure. The positive pressure of the wire clamping device on the steel wire rope is FIs just(adjustment by screwing boltPositive pressure), the friction force between the wire clamping device and the steel wire rope is F, the friction factor is mu, and the tensile force born by the iron chain is F1The sum of the positive upward tension of the iron chain on the cable body is FCombination of Chinese herbsAnd the included angle between the iron chain and the cable body is theta. As can be seen from the above, F ═ μ FIs just，FCombination of Chinese herbs＝2F1cos θ, and F ═ FCombination of Chinese herbs，FCombination of Chinese herbsThe cable clamp can counteract partial gravity of the cable, so that the cable laying can be controlled by adjusting the positive pressure (bolt fastening degree) of the cable clamp on the steel wire rope. The cable stress analysis diagram is shown in fig. 2.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (4)
1. The utility model provides a high drop high tension cable lays device perpendicularly which characterized in that: the method comprises the following steps: the system comprises a cable laying track laid along the height direction of a target shaft, a cable conveying machine used for conveying cables on a cable drum to the shaft, and a cable laying assembly used for laying the cables along the cable laying track;
the cable laying assembly comprises a plurality of metal hoops and a plurality of iron chains, wherein the metal hoops are arranged according to preset distances and used for clamping the cable body, one end of each iron chain is connected with the corresponding metal hoop, and the other end of each iron chain is connected with the cable laying track through a wire clamping device.
2. The high drop height high voltage cable vertical run arrangement of claim 1, further comprising: the cable laying track is laid along the height direction of the target shaft, and two parallel steel wire ropes are fixed at two ends of the cable laying track respectively.
3. The high drop height high voltage cable vertical run arrangement of claim 2, further comprising: the size of the section of the steel wire rope is required to meet the requirement that two steel wire ropes can bear the gravity of a cable body at the laying section of the vertical shaft without breaking.
4. The high drop height high voltage cable vertical run arrangement of claim 1, further comprising: and a rubber pad is arranged on the inner side of the metal hoop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021238075.0U CN213212919U (en) | 2020-06-29 | 2020-06-29 | High-drop high-voltage cable vertical laying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021238075.0U CN213212919U (en) | 2020-06-29 | 2020-06-29 | High-drop high-voltage cable vertical laying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213212919U true CN213212919U (en) | 2021-05-14 |
Family
ID=75832267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021238075.0U Active CN213212919U (en) | 2020-06-29 | 2020-06-29 | High-drop high-voltage cable vertical laying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213212919U (en) |
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2020
- 2020-06-29 CN CN202021238075.0U patent/CN213212919U/en active Active
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