CN114724783A - Matched hardware fitting of double-hanging-point double-connection suspension string and double-hanging-point double-connection suspension string - Google Patents
Matched hardware fitting of double-hanging-point double-connection suspension string and double-hanging-point double-connection suspension string Download PDFInfo
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- CN114724783A CN114724783A CN202210315794.5A CN202210315794A CN114724783A CN 114724783 A CN114724783 A CN 114724783A CN 202210315794 A CN202210315794 A CN 202210315794A CN 114724783 A CN114724783 A CN 114724783A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/04—Chains; Multiple chains
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/06—Fastening of insulator to support, to conductor, or to adjoining insulator
- H01B17/10—Fastening of insulator to support, to conductor, or to adjoining insulator by intermediate link
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/42—Means for obtaining improved distribution of voltage; Protection against arc discharges
- H01B17/48—Means for obtaining improved distribution of voltage; Protection against arc discharges over chains or other serially-arranged insulators
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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
- H02G7/00—Overhead installations of electric lines or cables
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
Abstract
本发明涉及一种双挂点双联悬垂串的配套金具，金具与横担连接，包括上钢板、下钢板和绝缘子串连接件，上钢板和下钢板通过螺栓连接形成组合联板，横担与组合联板通过螺栓连接；绝缘子串连接件的数量为两个，上钢板的两端分别与两个绝缘子串连接件连接；上钢板和下钢板均采用平板结构，上钢板的底部平面与下钢板的顶部平面贴合。本发明还涉及一种双挂点双联悬垂串。本发明缩短整个悬垂串结构的长度，保持电气安全距离，属于电力金具技术领域。
The invention relates to a matching fitting for a double-hanging point double-connected suspension string. The fitting is connected to a cross arm, including an upper steel plate, a lower steel plate and an insulator string connecting piece. The upper steel plate and the lower steel plate are connected by bolts to form a combined connecting plate. The combined connecting plates are connected by bolts; the number of insulator string connectors is two, and the two ends of the upper steel plate are respectively connected with the two insulator string connectors; the upper steel plate and the lower steel plate are both flat-plate structures, and the bottom plane of the upper steel plate is connected to the lower steel plate. the top flat fit. The invention also relates to a double hanging point double hanging string. The invention shortens the length of the entire suspension string structure, maintains the electrical safety distance, and belongs to the technical field of electric power fittings.
Description
Technical Field
The invention relates to the technical field of electric power fittings, in particular to a fitting for a double-hanging-point duplex suspension string and the double-hanging-point duplex suspension string.
Background
In places where the power transmission line crosses important cross spans such as railways, expressways, first-level highways and the like, because the tangent tower cross arm constructed in the early stage is generally in a pyramid shape, when the line is overhauled and countered, a single-hanging-point single-connection suspension string is often required to be changed into a single-hanging-point double-connection suspension string, and the specific method is to connect the double-connection suspension insulator string by adding a triangular connecting plate and a right-angle hanging plate so as to improve the stability and the safety of the line in operation.
When the old tangent tower single-hanging-point single-connection suspension string is changed into the single-hanging-point double-connection suspension string, the triangular connecting plate and the right-angle hanging plate increase the length of the assembly string, so that the electrical distance can not meet the safety requirement, the wire can discharge to the cross arm and the peripheral tower materials below the wire, the potential safety hazard exists, and the original assembly string structure form and the matched hardware fitting can not be applied.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to: the matched hardware fitting of the double-hanging-point double-linkage suspension string can shorten the length of the whole suspension string structure and keep the electrical safety distance.
Another object of the invention is: provides a double-hanging-point double-linkage suspension string with high safety.
In order to achieve the purpose, the invention adopts the following technical scheme:
a matched hardware fitting of a double-hanging-point double-connection suspension string is connected with a cross arm and comprises an upper steel plate, a lower steel plate and an insulator string connecting piece, wherein the upper steel plate and the lower steel plate are connected through bolts to form a combined yoke plate, and the cross arm is connected with the combined yoke plate through bolts; the number of the insulator string connecting pieces is two, and two ends of the upper steel plate are respectively connected with the two insulator string connecting pieces; go up the steel sheet and all adopt the flat structure with lower steel sheet, go up the bottom plane of steel sheet and the top plane laminating of steel sheet down.
Preferably, the upper steel plate and the lower steel plate are both rectangular flat plates or square flat plates.
Preferably, the upper steel plate and the lower steel plate are both made of hot-dip galvanized steel or titanium alloy.
Preferably, all the bolts are of M16 type, and are provided with screw holes which are positioned at one end extending out of the nuts; the screw hole is connected with a pin.
Preferably, the pins are R-type pins.
Preferably, the nut connecting end of the bolt is arranged from the lower steel plate to the upper steel plate, a gasket is arranged between the nut and the upper steel plate, and a gasket is arranged between the nut and the cross arm.
Preferably, the thickness of the spacer is 2 mm.
Preferably, the insulator string connecting piece comprises a U-shaped screw, a U-shaped hanging ring and a ball head hanging ring, wherein two straight rod sections of the U-shaped screw are provided with threads, and both the two straight rod sections of the U-shaped screw penetrate through the upper steel plate and are fixedly connected through a nut; the arc section of the U-shaped hanging ring is buckled with the arc section of the U-shaped screw, and the U-shaped hanging ring is used for connecting the ball head hanging ring of the insulator string and the straight rod section of the U-shaped hanging ring.
Preferably, the cross arm comprises a vertical section and a horizontal section, the vertical section and the horizontal section are integrally arranged, the vertical section and the horizontal section are mutually vertical, and the vertical section is arranged towards the direction far away from the upper steel plate; the horizontal segment is parallel with the upper steel plate and is connected with the upper steel plate through a bolt.
The utility model provides a two string point pair strings that dangle, includes two insulator chains, suspension clamp and a two string point pair supporting gold utensil of string that dangle, and the one end of two insulator chains is connected with two insulator string connecting pieces respectively, and the other end of two insulator chains all is fixed with the wire through suspension clamp.
In summary, the present invention has the following advantages:
according to the invention, the original triangular connecting plate and the original right-angle hanging plate are replaced by the combined connecting plate, so that the length of an assembly string (the structural length is reduced by 153mm) increased by converting the single-hanging-point single-connection suspension string of the pyramid-shaped cross arm into the single-hanging-point double-connection suspension string is greatly reduced, and the air gap of the wire to the tower meets the safety requirement. Meanwhile, the matched hardware tool is adopted to convert the single-point duplex suspension string into the double-point duplex suspension string, single-point stress is converted into two-point stress, the bearing load is larger, and the connection is more reliable and firmer.
Drawings
Figure 1 is a front view of a fitting of a double-hanging-point double-linkage suspension string,
fig. 2 is a bottom view of a fitting of a double-hanging-point double-linkage suspension string.
Fig. 3 is a front view of a double hanging point double pendant string.
The device comprises an upper steel plate 1, a lower steel plate 2, a cross arm 3, a bolt 4, a pin 5, a gasket 6, a U-shaped screw 7, a U-shaped hanging ring 8, a ball-end hanging ring 9, a nut 10, a matched hardware fitting 11, an insulator string connecting piece 12, an insulator string 13 and a suspension clamp 14.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
A matched hardware fitting of a double-hanging-point double-connection suspension string is connected with a cross arm and comprises an upper steel plate, a lower steel plate and an insulator string connecting piece, wherein the upper steel plate and the lower steel plate are connected through bolts to form a combined yoke plate, and the cross arm is connected with the combined yoke plate through bolts; the number of the insulator string connecting pieces is two, and two ends of the upper steel plate are respectively connected with the two insulator string connecting pieces; go up the steel sheet and all adopt the flat structure with lower steel sheet, go up the bottom plane of steel sheet and the top plane laminating of steel sheet down. Adopt upper and lower layer combination yoke plate to increase tensile strength, because last steel sheet is short with lower steel sheet spatial structure, the whole length of cluster that dangles reduces for go up the electric distance that phase conductor and well looks conductor satisfied the safety requirement to its below cross arm.
The upper steel plate and the lower steel plate are both rectangular flat plates or square flat plates. The upper steel plate and the lower steel plate of the present embodiment are both rectangular flat plates.
The upper steel plate and the lower steel plate are both made of hot-dip galvanized steel or titanium alloy. The upper steel plate and the lower steel plate of the embodiment are both made of hot-dip galvanized steel.
All the bolts are of an M16 type (the nominal load is not less than 70kN), and all the bolts are provided with screw holes which are positioned at one end of the extending nut; the screw rod hole is connected with a pin for preventing the nut from loosening and falling off.
The pins are R-shaped pins.
The nut connecting end of the bolt is arranged from the lower steel plate to the upper steel plate, a gasket is arranged between the nut and the upper steel plate, and a gasket is arranged between the nut and the cross arm.
The thickness of the shim was 2 mm.
The insulator string connecting piece comprises a U-shaped screw, a U-shaped hanging ring and a ball head hanging ring, wherein two straight rod sections of the U-shaped screw are provided with threads, and both the two straight rod sections of the U-shaped screw penetrate through the upper steel plate and are fixedly connected through nuts; the arc section of the U-shaped hanging ring is buckled with the arc section of the U-shaped screw, and the U-shaped hanging ring is used for connecting the ball head hanging ring of the insulator string and the straight rod section of the U-shaped hanging ring.
The cross arm comprises a vertical section and a horizontal section which are integrally arranged, the vertical section and the horizontal section are mutually vertical, and the vertical section is arranged towards the direction far away from the upper steel plate; the horizontal segment is parallel with last steel sheet, and the horizontal segment passes through the bolt to be connected with last steel sheet.
The utility model provides a two string point pair strings that dangle, includes two insulator chains, suspension clamp and a two string point pair supporting gold utensil of string that dangle, and the one end of two insulator chains is connected with two insulator string connecting pieces respectively, and the other end of two insulator chains all is fixed with the wire through suspension clamp. In the embodiment, one ends of the two insulator strings are connected with the wires through the suspension clamps, the other ends of the two insulator strings are connected with the cross arms through the insulator string connecting pieces and the combined connecting plates, and the whole structure length of the matched hardware fitting is reduced, so that the wires positioned on the upper phase and the middle phase can not discharge to the cross arms below the upper phase and the middle phase because the single-hanging-point single-connection suspension strings of the pyramid-shaped cross arms are converted into the single-hanging-point double-connection suspension strings to increase the length of the assembly strings, and the safety of the lines is ensured.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides a supporting gold utensil of cluster is dangled to pair of hanging point, the gold utensil is connected with the cross arm, its characterized in that: the cross arm is connected with the combined yoke plate through bolts; the number of the insulator string connecting pieces is two, and two ends of the upper steel plate are respectively connected with the two insulator string connecting pieces; go up the steel sheet and all adopt the flat structure with lower steel sheet, go up the bottom plane of steel sheet and the top plane laminating of steel sheet down.
2. The matched hardware fitting of the double-hanging-point double-linkage suspension string according to claim 1, characterized in that: the upper steel plate and the lower steel plate are both rectangular flat plates or square flat plates.
3. The matched hardware fitting of the double-hanging-point double-linkage suspension string according to claim 2, characterized in that: the upper steel plate and the lower steel plate are both made of hot-dip galvanized steel or titanium alloy.
4. The matched hardware fitting of the double-hanging-point double-linkage suspension string according to claim 1, characterized in that: all the bolts are M16 type, and are provided with screw holes which are positioned at one end extending out of the nuts; the screw hole is connected with a pin.
5. The matched hardware fitting of the double-hanging-point double-linkage suspension string according to claim 4, characterized in that: the pins are R-shaped pins.
6. The matched hardware fitting of the double-hanging-point double-linkage suspension string according to claim 4, characterized in that: the nut connecting end of the bolt is arranged from the lower steel plate to the upper steel plate, a gasket is arranged between the nut and the upper steel plate, and a gasket is arranged between the nut and the cross arm.
7. The matched hardware fitting of the double-hanging-point double-linkage suspension string according to claim 6, characterized in that: the thickness of the shim was 2 mm.
8. The matched hardware fitting of the double-hanging-point double-linkage suspension string according to claim 1, characterized in that: the insulator string connecting piece comprises a U-shaped screw, a U-shaped hanging ring and a ball head hanging ring, wherein two straight rod sections of the U-shaped screw are provided with threads, and both the two straight rod sections of the U-shaped screw penetrate through the upper steel plate and are fixedly connected through nuts; the arc section of the U-shaped hanging ring is buckled with the arc section of the U-shaped screw, and the U-shaped hanging ring is used for connecting the ball head hanging ring of the insulator string and the straight rod section of the U-shaped hanging ring.
9. The matched hardware fitting of the double-hanging-point double-linkage suspension string according to claim 1, characterized in that: the cross arm comprises a vertical section and a horizontal section which are integrally arranged, the vertical section and the horizontal section are mutually vertical, and the vertical section is arranged towards the direction far away from the upper steel plate; the horizontal segment is parallel with the upper steel plate and is connected with the upper steel plate through a bolt.
10. The utility model provides a cluster hangs in pair of two hanging points which characterized in that: the double-hanging-point duplex suspension string fitting comprises two insulator strings, a suspension clamp and the fitting of the double-hanging-point duplex suspension string as claimed in any one of claims 1 to 9, wherein one ends of the two insulator strings are respectively connected with two insulator string connecting pieces, and the other ends of the two insulator strings are fixed with a lead through the suspension clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210315794.5A CN114724783B (en) | 2022-03-29 | 2022-03-29 | A matching fitting for a double-point double-link suspension string, and a double-point double-link suspension string. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210315794.5A CN114724783B (en) | 2022-03-29 | 2022-03-29 | A matching fitting for a double-point double-link suspension string, and a double-point double-link suspension string. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114724783A true CN114724783A (en) | 2022-07-08 |
| CN114724783B CN114724783B (en) | 2025-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210315794.5A Active CN114724783B (en) | 2022-03-29 | 2022-03-29 | A matching fitting for a double-point double-link suspension string, and a double-point double-link suspension string. |
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| CN (1) | CN114724783B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118970778A (en) * | 2024-08-09 | 2024-11-15 | 安徽博晟亿电力科技有限公司 | Double-connected double-hanging-point V-shaped suspension string of disc-shaped suspension insulator and its operation method |
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| JP2011234592A (en) * | 2010-04-30 | 2011-11-17 | Sdk Kk | Ground bar mounting metal fitting in steel tower |
| CN202905306U (en) * | 2012-11-27 | 2013-04-24 | 中国南方电网有限责任公司超高压输电公司 | Double suspension-point single wire-clamp duplex I type composite insulator string for +/- 500kV double-circuit line on same tower |
| CN208158004U (en) * | 2018-05-30 | 2018-11-27 | 广东电网有限责任公司 | Bearing assembly and insulator replacement tool |
| CN110247360A (en) * | 2019-07-02 | 2019-09-17 | 国网山东省电力公司烟台供电公司 | A kind of double series winding tower apparatus of composite suspension insulator |
| CN211555602U (en) * | 2020-01-21 | 2020-09-22 | 国网浙江省电力有限公司湖州供电公司 | A tension insulator string hanging device with double hanging points and double connection |
-
2022
- 2022-03-29 CN CN202210315794.5A patent/CN114724783B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011234592A (en) * | 2010-04-30 | 2011-11-17 | Sdk Kk | Ground bar mounting metal fitting in steel tower |
| CN202905306U (en) * | 2012-11-27 | 2013-04-24 | 中国南方电网有限责任公司超高压输电公司 | Double suspension-point single wire-clamp duplex I type composite insulator string for +/- 500kV double-circuit line on same tower |
| CN208158004U (en) * | 2018-05-30 | 2018-11-27 | 广东电网有限责任公司 | Bearing assembly and insulator replacement tool |
| CN110247360A (en) * | 2019-07-02 | 2019-09-17 | 国网山东省电力公司烟台供电公司 | A kind of double series winding tower apparatus of composite suspension insulator |
| CN211555602U (en) * | 2020-01-21 | 2020-09-22 | 国网浙江省电力有限公司湖州供电公司 | A tension insulator string hanging device with double hanging points and double connection |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118970778A (en) * | 2024-08-09 | 2024-11-15 | 安徽博晟亿电力科技有限公司 | Double-connected double-hanging-point V-shaped suspension string of disc-shaped suspension insulator and its operation method |
| CN118970778B (en) * | 2024-08-09 | 2025-10-10 | 安徽博晟亿电力科技有限公司 | Double-connected double-hanging-point V-shaped suspension string of disc-shaped suspension insulators and its operation method |
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| Publication number | Publication date |
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| CN114724783B (en) | 2025-12-05 |
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