CN110797797A - Transmission line stridees across iron tower assembled protection network supporting beam - Google Patents
Transmission line stridees across iron tower assembled protection network supporting beam Download PDFInfo
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- CN110797797A CN110797797A CN201911241386.4A CN201911241386A CN110797797A CN 110797797 A CN110797797 A CN 110797797A CN 201911241386 A CN201911241386 A CN 201911241386A CN 110797797 A CN110797797 A CN 110797797A
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- iron tower
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 32
- 239000000725 suspension Substances 0.000 claims abstract description 34
- 238000003466 welding Methods 0.000 claims description 33
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 16
- 230000001681 protective effect Effects 0.000 claims description 12
- 238000010276 construction Methods 0.000 abstract description 19
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
Abstract
An assembled protection net supporting beam for a power transmission line crossing iron tower comprises at least one supporting beam unit, wherein the supporting beam units are spliced to form a supporting beam, and adjacent supporting beam units are connected through a connecting flange; the supporting beam unit comprises an upper group of main beams and a lower group of main beams which are arranged in parallel at intervals, a plurality of groups of auxiliary supporting beams are sequentially arranged between the main beams in an adjacent and crossed manner, vertical beams which are vertically arranged are also arranged at the crossed positions of the adjacent auxiliary supporting beams, and the vertical beams are connected with the main beams to form a rectangular frame; suspension ring sets are fixedly arranged on the main beam at the upper end at intervals along the length direction of the main beam, and stay wire ring sets are correspondingly fixedly arranged on the main beam at the lower end at intervals. The transmission line crosses over the assembled protection net supporting beam of the iron tower, can realize the free combination of a plurality of sections of supporting beam units, is convenient and quick to install the supporting beam units on site, and can realize the requirements of different voltage grades on the length of the supporting beam; the adoption of multiple sections of small-length supporting beam units is beneficial to transportation and carrying in construction.
Description
Technical Field
The invention belongs to the technical field of power transmission lines in the power industry, and particularly relates to an assembled protection net supporting beam for a power transmission line crossing iron tower.
Background
With the continuous improvement and rapid development of power infrastructure in China, the phenomenon of cross spanning of power transmission lines is increasing day by day. The traditional stringing method comprises the following steps: and (4) performing power failure and line descending on the crossed line, and then setting up a crossing frame to protect the line. However, in a real environment, the requirements of customers on the safety and stability of a power grid are higher and higher, the manpower, material resources and occupied green seedling compensation cost required for building a crossing frame on site are also greatly increased, and the traditional crossing stringing technology cannot meet the requirements of line construction and construction.
In order to further improve the construction of the power transmission line non-outage spanning overhead line, a spanning protection net supporting beam is temporarily installed below an iron tower cross arm to solve the possible obstruction of the power transmission line non-outage spanning overhead line construction.
The technical scheme of the conventional commonly-used supporting beam for the protection net of the uninterrupted crossing overhead line is mature in the aspect of the installation of a power transmission line iron tower, a steel wire rope is suspended at the upper part of a supporting frame and is fixed on a main material of the iron tower, the modes of the beam are slightly different for different iron tower forms, but the length of the supporting frame of the protection net is fixed, and the width of the protection net cannot be adjusted. The length of the supporting beam of the protection net is fixed, so that the width adjustment of the supporting beam at different voltage levels is not facilitated, the supporting beam only can be used for low voltage at high voltage, but not for high voltage at low voltage, the waste of resources is caused, and the installation of the protection net at multiple voltage levels is difficult to adapt; in addition, the length of the supporting beam of the protection net is fixed, and the transportation difficulty is increased in the transportation process.
The Chinese utility model 'double-flat-arm ground holding pole' (publication number: CN201040692Y) discloses a double-flat-arm ground holding pole, belonging to a hoisting device for erecting a high tower; the pole body 2 comprises a plurality of standard knots 4 which are sequentially overlapped, two adjacent standard knots 4 are fixedly connected through a bolt, a wall attaching frame 11 which is sleeved on the outer wall of each standard knot 4 is arranged outside the pole body 2, the wall attaching frame 11 is connected with an external fixture 6 through an assembler flexible connecting mechanism 7, and a hydraulic jacking mechanism 5 is arranged on the periphery of the base part of the pole body 2. And standard knots 4 are introduced from the ground to realize the self-jacking of the holding pole. The soft attaching wall at the periphery of the holding pole is connected with the iron tower, the dismounting and the mounting are convenient, the adjusting range is large, and the double flat arms can be folded upwards and then fall integrally with the pole body 2. The base is connected with foundation bolts on the foundation and can be repeatedly used; the whole machine has high safety, simple and convenient operation, convenient disassembly and assembly and high construction efficiency, is particularly suitable for the erection construction of high-height iron towers such as large-span iron towers or extra-high voltage iron towers, and can also be used for the hoisting construction operation of high-rise buildings. However, the utility model has no fixed suspension point and pull line point, and the construction is very inconvenient.
The invention Chinese patent 'crossing frame or group erecting method' (publication number: CN1343588A) discloses a crossing frame or group erecting method without power failure for laying lead and ground wire of high voltage power line, wherein, a metal trapezoidal sheet frame body (1) and a movable hinge element (2) are hinged with equal distance and equal width to form a matching body, the two frame bodies are relatively rotated to form a flat body or opened to form a trapezoidal frame body figure (5), and an X-shaped fixing piece (3) is used for fixing the two frame bodies to form a fixing piece for construction, and the other embodiment is characterized in that: the middle part of the frame body linking piece (2) is a foldable movable piece, so that the frame body can be folded into a flat body when not used, and the transportation, storage or site transfer is convenient; the invention solves the problem that the construction of spreading and releasing wires and ground wires in the transmission and transformation transmission line engineering encounters the high-low voltage lines with the ground, the roads comprise highways, the railways comprise obstacles such as electrified railways and the like, and meanwhile, the invention is also suitable for the construction and construction of frame structures and frame building in other aspects, is especially suitable for complex terrains and sections, and brings huge economic benefits for transmission and transformation construction units or society, but the invention is not suitable for the installation of a protection network with multiple voltage grades.
Disclosure of Invention
The invention aims to provide the fabricated protective net supporting beam for the transmission line crossing the iron tower, which aims to overcome the defects of the prior art, realize the adjustable length of the supporting beam and meet the requirements of different voltage grades on the length of the supporting beam.
In order to solve the technical problems, the invention adopts the technical scheme that:
an assembled protection net supporting beam for a power transmission line crossing an iron tower comprises at least one supporting beam unit, wherein the supporting beam units are spliced to form supporting beams, and adjacent supporting beam units are connected through connecting flanges;
the supporting beam unit comprises an upper group of main beams and a lower group of main beams which are arranged in parallel at intervals, a plurality of groups of auxiliary supporting beams are sequentially arranged between the main beams in an adjacent and crossed manner, vertical beams which are vertically arranged are also arranged at the crossed positions of the adjacent auxiliary supporting beams, and the vertical beams are connected with the main beams to form a rectangular frame; suspension ring sets are fixedly arranged on the main beam at the upper end at intervals along the length direction of the main beam, and stay wire ring sets are correspondingly fixedly arranged on the main beam at the lower end at intervals.
Each suspension ring group comprises two suspension rings which are arranged in a contrasting manner in the width direction of the main cross beam at the upper end, and each suspension ring is of a U-shaped structure and is vertically and upwards fixedly arranged on the main cross beam at the upper end;
every stay wire ring group includes two stay wire rings of arranging in the contrast of main beam width direction of lower extreme, and every stay wire ring all includes vertical portion and U type portion, and U type portion is the contained angle with vertical portion and buckles and set up, and the stay wire ring sets firmly downwards on the main beam of lower extreme through vertical portion is vertical, and the direction of buckling of two stay wire rings in same group sets up mutually.
The connecting flanges are fixedly arranged at two ends of the supporting beam unit, are arranged into a rectangular frame structure and are provided with a plurality of threaded holes; when the adjacent supporting beam units are spliced, the supporting beam units are fixed through the connecting bolts matched with the threaded holes.
The U-shaped portion and the vertical portion are arranged at an included angle of 135 degrees.
The U-shaped portion and the vertical portion are integrally formed.
The connecting flange and the main cross beams at two ends of the supporting cross beam unit are fixed by welding, and the grade of the welding line is a second-level welding line.
The main cross beam is made of main material angle steel, and the auxiliary supporting beam is made of auxiliary material angle steel.
All contact positions of the main material angle steel and the auxiliary material angle steel are welded and fixed, and the grade of the welding line is a secondary welding line.
The suspension ring group and the main beam are fixed in a welding mode, the grade of the welding line is a first-grade welding line, and the stay wire ring group and the main beam are also fixed in a welding mode, and the grade of the welding line is a first-grade welding line.
The length of the supporting beam unit is 4 meters, 5 meters or 6 meters, and the supporting beam unit is assembled according to the voltage class.
The invention has the beneficial effects that:
(1) the transmission line crosses over the assembled protection net supporting beam of the iron tower, the free combination of a plurality of sections of supporting beam units can be realized through the arrangement of the supporting beam units which can be spliced, the supporting beam units are conveniently and quickly installed on site, and the requirements of different voltage grades on the length of the supporting beam can be realized; meanwhile, the supporting beam units with multiple sections and small lengths are adopted, so that transportation and carrying in construction are facilitated.
(2) The length of the segmented supporting beam unit is provided with various specifications, the length combination of the supporting beams of the power transmission line crossing tower protection net in any voltage class can be realized, and the use of the same supporting beam in multiple voltage class lines is realized.
(3) The suspension ring group and the stay wire ring group are fixedly arranged on the main cross beam, so that the supporting cross beam can be conveniently and quickly arranged and fixed on the lower part of the cross arm of the iron tower in site construction.
Drawings
Fig. 1 is a front view of a support beam unit;
fig. 2 is a plan view of the support beam unit;
fig. 3 is a side view of the supporting beam unit;
FIG. 4 is a schematic view of the connection of the main beam to the secondary support beam of the support beam;
FIG. 5 is a side view of the support beam main beam;
FIG. 6 is a schematic structural view of a connecting flange;
FIG. 7 is a front view of the suspension ring set;
FIG. 8 is a side view of a suspension loop set;
FIG. 9 is a front view of the wire loop assembly;
FIG. 10 is a side view of the wire loop set;
FIG. 11 is a partial welded front view of a suspension ring set and a wire ring set;
FIG. 12 is a partial welded side view of a suspension ring set and a wire ring set; (ii) a
Fig. 13 is a schematic structural view of connection of adjacent support beam units.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
The invention provides an assembled protection net supporting beam for a power transmission line crossing an iron tower, which is shown in figures 1 to 13.
The transmission line crosses over the iron tower and assembles the protective net supporting beam, it includes at least one supporting beam unit, the supporting beam unit is spliced to form the supporting beam and the adjacent supporting beam units are connected by the connecting flange 4; the supporting beam unit comprises an upper group of main beams 1 and a lower group of main beams 1 which are arranged in parallel at intervals, a plurality of groups of auxiliary supporting beams 2 are sequentially and adjacently crossed and fixedly arranged between the main beams 1, vertical beams 6 which are vertically arranged are further arranged at the crossed positions of the auxiliary supporting beams 2, and the vertical beams 6 are connected with the main beams 1 to form a rectangular frame; suspension ring sets 3 are fixedly arranged on the main beam 1 at the upper end at intervals along the length direction, and stay wire ring sets 5 are correspondingly and fixedly arranged on the main beam 1 at the lower end at intervals.
Each suspension ring group 3 comprises two suspension rings which are arranged oppositely in the width direction of the main cross beam 1 at the upper end, and each suspension ring is set to be of a U-shaped structure and is vertically and upwards fixedly arranged on the main cross beam 1 at the upper end.
Every stay wire ring group includes two stay wire rings of arranging at the contrast of the main beam 1 width direction of lower extreme, and every stay wire ring all includes vertical portion 51 and U type portion 52, and U type portion 52 is the contained angle setting of buckling with vertical portion 51, and stay wire ring 5 sets firmly on the main beam 1 of lower extreme through vertical portion 51 is vertical downwards, and sets up mutually oppositely in the direction of buckling of two stay wire rings 3 in the same group.
The connecting flanges 4 are fixedly arranged at two ends of the supporting beam unit, are of a rectangular frame structure and are provided with a plurality of threaded holes 41; when the adjacent support beam units are joined, they are fixed by the connecting bolts 42 disposed in the screw holes 41.
In order to improve the strength, the U-shaped portion 52 and the vertical portion 51 are integrally formed, and in this embodiment, in order to keep the same angle with the anchor pulling steel cable, the U-shaped portion 52 and the vertical portion 51 are arranged at an included angle of 135 degrees, and the suspension ring set 3 and the pull ring set 5 are formed by folding round steel with a diameter of 16 degrees, the U-shaped structure of the suspension ring set 3 has an inner diameter radius of 50mm, a straight line length of 150mm, and a total height of 216 mm; the radius of the inner diameter of the U-shaped part 52 of the stay wire ring group is 50mm, the length of a straight line is 150mm, and the stay wire ring group is bent by 135 degrees at a position 65mm away from the end head, so that the stay wire ring group and the anchor wire rope have the same angle.
The connecting flange 4 and the main beam 1 at two ends of the supporting beam unit are fixed by welding, the grade of the welding line is a secondary welding line, preferably, the connecting flange 4 is made of a 16mm thick steel plate, and 32 phi 17.5 threaded holes are drilled in the connecting flange 4 and are used for combined connection between the adjacent supporting beam units; the connecting flanges 4 are welded to two ends of the main beam 1 of the supporting beam unit, the grade of the welding seam is required to be a second-grade welding seam, and the adjacent connecting flanges 4 use M16 multiplied by 80 (double-cap double-pad, 8.8 grade) connecting bolts to meet different length combination requirements so as to meet the requirements of crossing tower protective net supporting beams in power transmission lines with various voltage grades.
The main beam 1 is made of main material angle steel, the specification is ∠ 70 multiplied by 7, the auxiliary supporting beam 2 is made of auxiliary material angle steel, the specification is ∠ 63 multiplied by 5, the auxiliary material angle steel is welded on the four main material angle steel to form a supporting beam unit, all contact positions of the main material angle steel and the auxiliary material angle steel are welded and fixed, the grade of a welding line is a secondary welding line, the suspension ring group 3 and the stay wire ring group 5 are main bearing points and stress points, the suspension ring group 3 is welded and fixed with the main beam 1, the grade of the welding line is a primary welding line, the stay wire ring group 5 and the main beam 1 are also welded and fixed, and the grade of the welding line is a primary welding line.
The arrangement of the suspension ring group 3 is convenient for the suspension installation of the steel cable under the cross arm of the iron tower, and when the supporting beam unit is combined by multiple sections and lengths, the suspension ring group 3 can be utilized to effectively and quickly fix and suspend the steel cable on the supporting beam unit; the stay wire ring group 5 is a fixed point connected with an earth anchor, so that the supporting beam unit can be fixed up and down; preferably, the suspension ring groups 3 and the stay wire ring groups 5 are welded at a position 1 meter away from the end of the supporting beam unit, the distance between the two suspension ring groups 3 (or the stay wire ring groups 5) when the adjacent supporting beam units are combined is 2 meters, so that the distance between the two suspension ring groups 3 (or the stay wire ring groups 5) can be kept consistent with the distance between the two suspension ring groups 3 (the stay wire ring groups 5) on the single-section supporting beam unit by 2 meters, and the optimal suspension point and the optimal anchor pull point can be selected during construction, so that the supporting beam unit has fixed positions on the upper side and the. The suspension ring sets 3 (or the stay wire ring sets 5) are fixedly welded on the front and rear sides of the main beam 1 of the supporting beam unit so as to eliminate the directionality of the supporting beam and facilitate quick assembly and use during construction.
In this embodiment, the length of the supporting beam unit is 4 meters, 5 meters or 6 meters, and any length combination is performed according to the voltage class during assembly, for example, 4 meters +5 meters +6 meters =15 meters, so that the supporting beam unit is suitable for supporting a beam of a 110 kv line crossing tower protection net; 4 meters by 2+5 meters by 2+6 meters by 2=30 meters, and is suitable for a 220 kilovolt line crossing tower protection net supporting beam; the supporting beam can be suitable for the power transmission line crossing tower protection net supporting beam with any voltage class through any combination of the supporting beam unit sections.
According to the invention, through the transmission line crossing iron tower assembled protection net supporting beam, the problems of single length, single applicable voltage grade, complicated field construction and the like of the transmission line crossing iron tower protection net supporting beam are solved, and the technical scheme is simple and convenient to operate, flexible to adjust, stable in fixing mode, convenient to construct and convenient to transport, and is novel and practical.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "center", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the scope of the present invention.
Claims (10)
1. The utility model provides a transmission line stridees across iron tower assembled protection network supporting beam which characterized in that: the support beam unit is spliced to form a support beam, and adjacent support beam units are connected by adopting a connecting flange;
the supporting beam unit comprises an upper group of main beams and a lower group of main beams which are arranged in parallel at intervals, a plurality of groups of auxiliary supporting beams are sequentially arranged between the main beams in an adjacent and crossed manner, vertical beams which are vertically arranged are also arranged at the crossed positions of the adjacent auxiliary supporting beams, and the vertical beams are connected with the main beams to form a rectangular frame; suspension ring sets are fixedly arranged on the main beam at the upper end at intervals along the length direction of the main beam, and stay wire ring sets are correspondingly fixedly arranged on the main beam at the lower end at intervals.
2. The fabricated protective net supporting beam for the power transmission line crossing iron tower according to claim 1, characterized in that: each suspension ring group comprises two suspension rings which are arranged in a contrasting manner in the width direction of the main cross beam at the upper end, and each suspension ring is of a U-shaped structure and is vertically and upwards fixedly arranged on the main cross beam at the upper end;
every stay wire ring group includes two stay wire rings of arranging in the contrast of main beam width direction of lower extreme, and every stay wire ring all includes vertical portion and U type portion, and U type portion is the contained angle with vertical portion and buckles and set up, and the stay wire ring sets firmly downwards on the main beam of lower extreme through vertical portion is vertical, and the direction of buckling of two stay wire rings in same group sets up mutually.
3. The fabricated protective net supporting beam for the power transmission line crossing iron tower according to claim 1, characterized in that: the connecting flanges are fixedly arranged at two ends of the supporting beam unit, are arranged into a rectangular frame structure and are provided with a plurality of threaded holes;
when the adjacent supporting beam units are spliced, the supporting beam units are fixed through the connecting bolts matched with the threaded holes.
4. The fabricated protective net supporting beam for the power transmission line crossing iron tower according to claim 2, characterized in that: the U-shaped portion and the vertical portion are arranged at an included angle of 135 degrees.
5. The fabricated protective net supporting beam for the power transmission line crossing iron tower according to claim 2, characterized in that: the U-shaped portion and the vertical portion are integrally formed.
6. The fabricated protective net supporting beam for the power transmission line crossing iron tower according to any one of claims 1 to 5, characterized in that: the connecting flange and the main cross beams at two ends of the supporting cross beam unit are fixed by welding, and the grade of the welding line is a second-level welding line.
7. The fabricated protective net supporting beam for the power transmission line crossing iron tower according to claim 6, characterized in that: the main cross beam is made of main material angle steel, and the auxiliary supporting beam is made of auxiliary material angle steel.
8. The fabricated protective net supporting beam for the power transmission line crossing iron tower according to claim 7, characterized in that: all contact positions of the main material angle steel and the auxiliary material angle steel are welded and fixed, and the grade of the welding line is a secondary welding line.
9. The fabricated protective net supporting beam for the power transmission line crossing iron tower according to claim 6, characterized in that: the suspension ring group and the main beam are fixed in a welding mode, the grade of the welding line is a first-grade welding line, and the stay wire ring group and the main beam are also fixed in a welding mode, and the grade of the welding line is a first-grade welding line.
10. The fabricated protective net supporting beam for the power transmission line crossing iron tower according to claim 6, characterized in that: the length of the supporting beam unit is 4 meters, 5 meters or 6 meters, and the supporting beam unit is assembled according to the voltage class.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911241386.4A CN110797797A (en) | 2019-12-06 | 2019-12-06 | Transmission line stridees across iron tower assembled protection network supporting beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911241386.4A CN110797797A (en) | 2019-12-06 | 2019-12-06 | Transmission line stridees across iron tower assembled protection network supporting beam |
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| Publication Number | Publication Date |
|---|---|
| CN110797797A true CN110797797A (en) | 2020-02-14 |
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ID=69447754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911241386.4A Pending CN110797797A (en) | 2019-12-06 | 2019-12-06 | Transmission line stridees across iron tower assembled protection network supporting beam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734202A (en) * | 2020-07-13 | 2020-10-02 | 广东电网能源发展有限公司 | Supporting base of fixed no-crossing-frame crossing system of transmission tower cross arm |
-
2019
- 2019-12-06 CN CN201911241386.4A patent/CN110797797A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734202A (en) * | 2020-07-13 | 2020-10-02 | 广东电网能源发展有限公司 | Supporting base of fixed no-crossing-frame crossing system of transmission tower cross arm |
| CN111734202B (en) * | 2020-07-13 | 2021-12-24 | 广东电网能源发展有限公司 | Supporting base of fixed no-crossing-frame crossing system of transmission tower cross arm |
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