CN112332350A - Closed shell wedge-shaped strain clamp for overhead insulated conductor - Google Patents
Closed shell wedge-shaped strain clamp for overhead insulated conductor Download PDFInfo
- Publication number
- CN112332350A CN112332350A CN202011296045.XA CN202011296045A CN112332350A CN 112332350 A CN112332350 A CN 112332350A CN 202011296045 A CN202011296045 A CN 202011296045A CN 112332350 A CN112332350 A CN 112332350A
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- Prior art keywords
- hanging plate
- wedge
- core body
- shell
- wedge core
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- 239000004020 conductor Substances 0.000 title claims abstract description 19
- 240000005002 Erythronium dens canis Species 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 6
- 210000005056 cell body Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- 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
- H02G7/05—Suspension arrangements or devices for electric cables or lines
- H02G7/053—Suspension clamps and clips for electric overhead lines not suspended to a supporting wire
-
- 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
- H02G7/02—Devices for adjusting or maintaining mechanical tension, e.g. take-up device
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention relates to a closed shell wedge-shaped strain clamp for an overhead insulated conductor, which comprises a hanging plate, an interlocking shell and a wedge core body; the hanging plate is composed of a left hanging plate and a right hanging plate which are symmetrically arranged, one end of the left hanging plate and one end of the right hanging plate are connected through a hanging point fastener and can be connected with the hardware fitting string through the hanging point fastener, and the other end of the left hanging plate and the other end of the right hanging plate are rotatably connected with the mutually buckled shell; the interlocking type shell is of a trapezoidal cylinder structure, the interior of the interlocking type shell is hollow, the section of the interlocking type shell along the straight line is isosceles trapezoid, a trapezoidal groove body is formed, the sections of the two sides of the interlocking type shell are rectangles, and the rectangular section with the smaller size is located at one end far away from the hanging plate; the wedge core body is fixedly sleeved on the insulated conductor and penetrates through the mutually buckled shell, and the wedge core body can clamp the insulated conductor by abutting the outer surface of the wedge core body with the inner surface of the trapezoidal groove of the mutually buckled shell. The closed shell wedge-shaped strain clamp is simple and convenient to install on site, reliable in structure and reusable, and is suitable for the strain section of the overhead insulated conductor.
Description
Technical Field
The invention relates to a matched hardware fitting for a distribution network overhead line, in particular to a shell closed wedge-shaped strain clamp for an overhead insulated conductor.
Background
At present, in domestic distribution lines, due to a series of reasons of a wire insulating layer material, stress states of a wire and a strain clamp, improper field installation, small sag, large span and the like, a line drop phenomenon occurs in the line operation process. This provides the safe and reliable power supply of distribution network, especially has constituted huge hidden danger to personal safety.
The cross section of a shell of the existing wedge-shaped insulating strain clamp is of a C-shaped structure, deformation is easy to occur in the stress process, pre-tightening force does not exist between a wedge core and an insulated wire, and the phenomenon that the wire falls off can occur when the friction force between the wedge core and the insulated wire is not enough to bear the tension of the insulated wire.
Disclosure of Invention
In view of the above problems, the present invention provides a housing enclosed wedge strain clamp for an overhead insulated conductor.
The technical scheme adopted by the invention is as follows:
a closed shell wedge strain clamp for an overhead insulated conductor comprises a hanging plate, an interlocking shell and a wedge core body; the hanging plate is composed of a left hanging plate and a right hanging plate which are symmetrically arranged, one end of the left hanging plate and one end of the right hanging plate are connected through a hanging point fastener and can be connected with the hardware fitting string through the hanging point fastener, and the other end of the left hanging plate and the other end of the right hanging plate are rotatably connected with the mutually buckled shell; the interlocking type shell is of a trapezoidal cylinder structure, the interior of the interlocking type shell is hollow, the section of the interlocking type shell along the straight line is isosceles trapezoid, a trapezoidal groove body is formed, the sections of the two sides of the interlocking type shell are rectangles, and the rectangular section with the smaller size is located at one end far away from the hanging plate; the wedge core body is fixedly sleeved on the insulated conductor and penetrates through the mutually buckled shell, and the wedge core body can clamp the insulated conductor by abutting the outer surface of the wedge core body with the inner surface of the trapezoidal groove of the mutually buckled shell.
Preferably, one end of each of the left hanging plate and the right hanging plate is provided with a hanging point hole, and the left hanging plate and the right hanging plate are connected with a hanging point fastener through the hanging point holes.
Preferably, the end faces of two sides of the mutually buckled shell are respectively provided with a mutually buckled shell anti-falling hanging shaft, the other ends of the left hanging plate and the right hanging plate are respectively provided with a hanging plate waist hole, and the left hanging plate and the right hanging plate are rotatably connected through the mutually buckled shell anti-falling hanging shaft and the hanging plate waist hole.
Preferably, each other knot formula casing comprises left casing and the right casing of symmetry, and the upper and lower terminal surface of left casing and right casing is equipped with a plurality of dogtooths and the recess of mutually supporting, and left casing and right casing pass through dogtooth and recess joint.
Preferably, reinforcing ribs can be additionally arranged on the left hanging plate and the right hanging plate.
Preferably, the wedge core body comprises a left wedge core body and a right wedge core body which are symmetrical, wedge core wire clamping bolt holes are respectively formed in the upper end face and the lower end face of one end of the left wedge core body and one end of the right wedge core body, and the wedge core fastener penetrates through the wedge core wire clamping bolt holes, so that the left wedge core body and the right wedge core body are fixedly sleeved on the insulated conductor.
Preferably, inclined teeth are further arranged on the inner surfaces of the left wedge core body and the right wedge core body, which are contacted with the insulated conducting wire.
Preferably, the end of the other end of the left wedge core body and the end of the other end of the right wedge core body are provided with chamfers.
The invention has the beneficial effects that:
1. the tension-resistant section of the distribution line is reliable in structure, simple in appearance, safe, reliable, reusable and suitable for the tension-resistant section of the distribution line.
2. The wedge core body of the invention is abutted against the inner surface of the trapezoidal groove body of the mutual buckling type shell through the outer surface of the wedge core body, so that the clamping of the insulated conducting wire is realized.
3. The invention is simple and convenient and quick to install on site, can effectively improve the construction efficiency and is beneficial to popularization and application.
4. The mutually buckled shell adopts a mutually buckled clamping structure, is convenient to install and disassemble, and has uniform stress distribution and high strength.
5. The wedge core body is fixedly sleeved on the insulated wire through the wedge core fastener, so that the wedge core body pre-compresses the insulated wire.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic side view of the present invention;
FIG. 4 is a schematic view of the planer structure of the present invention;
FIG. 5 is a schematic view of the interlocking shell of the present invention;
FIG. 6 is a schematic structural view of a wedge core body according to the present invention;
fig. 7 is a schematic structural view of the hanging plate of the invention.
In fig. 1-7, 1-link plate, 2-each other knot formula casing, 3-wedge core body, 4-left link plate, 5-right link plate, 6-string some fasteners, 7-trapezoidal cell body, 8-insulated wire, 9-string some holes, 10-each other knot formula casing anticreep peg, 11-link plate waist hole, 12-left casing, 13-right casing, 14-dogtooth, 15-recess, 16-strengthening rib, 17-left wedge core body, 18-right wedge core body, 19-wedge core presss from both sides the bolt hole, 20-wedge core fastener, 21-tooth, 22-chamfer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
As shown in fig. 1-7, the invention is a closed shell wedge strain clamp for an overhead insulated conductor, comprising a hanging plate 1, an interlocking shell 2 and a wedge core body 3.
Each other detains formula casing 2 and is trapezoidal cylinder structure, and each other detains the inside cavity of formula casing 2, its consequent line cross-section is isosceles trapezoid, and is formed with trapezoidal cell body 7, and each other detains the both sides cross-section of formula casing 2 and is the rectangle, and the less rectangular cross-section of size is located the one end of keeping away from link plate 1. The interlocking housing 2 is preferably a split structure for ease of field installation. Each other detains formula casing 2 comprises left casing 12 and right casing 13 of symmetry, and the upper and lower terminal surface of left casing 12 and right casing 13 is equipped with a plurality of dogteeth 14 and the recess 15 of mutually supporting, and left casing 12 and right casing 13 pass through dogtooth 14 and recess 15 joint, form each other and detain formula joint structure, and the installation and dismantle conveniently, and the atress distributes evenly, and intensity is big. In addition, according to the invention, the mutually buckled shell anti-falling hanging shafts 10 are respectively arranged on the end surfaces of the two sides of the mutually buckled shell 2, the hanging plate waist holes 11 are respectively arranged at the other ends of the left hanging plate 4 and the right hanging plate 5, and the left hanging plate 4 and the right hanging plate 5 are rotatably connected through the mutually buckled shell anti-falling hanging shafts 10 and the hanging plate waist holes 11.
The wedge core body 3 is fixedly sleeved on the insulated wire 8 and penetrates through the mutually buckled shell 2, and the wedge core body 3 can clamp the insulated wire 8 through the abutting of the outer surface of the wedge core body and the inner surface of the trapezoidal groove body 7 of the mutually buckled shell 2. In addition, the wedge core body 3 is preferably a split structure to facilitate field installation. The wedge core body 3 can be formed by a symmetrical left wedge core body 17 and a right wedge core body 18, wedge core wire clamping bolt holes 19 are respectively formed in the upper end face and the lower end face of one end of the left wedge core body 17 and one end of the right wedge core body 18, and a wedge core fastener 20 penetrates through the wedge core wire clamping bolt holes 19, so that the left wedge core body 17 and the right wedge core body 18 are fixedly sleeved on the insulated conducting wire 8, and the pre-compression of the wedge core body 3 on the insulated conducting wire 8 is realized.
The installation method of the closed shell wedge-shaped strain clamp comprises the following steps: firstly, an insulated wire 8 penetrates through the interlocking type shell 2 and is arranged between the wedge core left body 17 and the wedge core right body 18, and a wedge core fastener 20 penetrates through a wedge core wire clamping bolt hole 19, so that the wedge core left body 17 and the wedge core right body 18 form an integral wedge core body 3, and are fixedly sleeved on the insulated wire 8 to pre-press the insulated wire 8. Then run through the buckle formula casing 2 with wedge core body 3, because the surface of wedge core body 3 can with the trapezoidal cell body 7 internal surface butt of buckle formula casing 2, consequently the pulling force that insulated wire 8 produced is big more, the clamp force of the wedge core body 3 that it received is big more. And finally, connecting the left hanging plate 4 and the right hanging plate 5 with the hardware fitting string through the hanging point fastener 6.
It should be noted that compared with the existing wedge-shaped insulated strain clamp with a C-shaped cross section structure, the inner surface of the trapezoidal groove body 7 of the interlocking shell 2 is more uniformly stressed and does not deform; through a plurality of convex teeth 14 and recess 15, left casing 12 and right casing 13 form the formula of each other detaining joint structure, and the installation and dismantle convenience, and intensity is bigger.
In order to increase the friction between the left wedge body 17 and the right wedge body 18 and the insulated conductor 8, the inner surfaces of the left wedge body 17 and the right wedge body 18 contacting the insulated conductor 8 are also provided with inclined teeth 21.
In order to prevent the insulated conductor 8 from being affected by concentrated stress where the wedge body 3 appears, resulting in damage to the insulation. And a chamfer 22 can be additionally arranged at the end head of the other end of the wedge core left body 17 and the wedge core right body 18.
Claims (8)
1. The utility model provides a closed shell wedge strain clamp for overhead insulated conductor which characterized in that: the closed shell wedge-shaped strain clamp comprises a hanging plate, an interlocking shell and a wedge core body; the hanging plate is composed of a left hanging plate and a right hanging plate which are symmetrically arranged, one end of the left hanging plate and one end of the right hanging plate are connected through a hanging point fastener and can be connected with the hardware fitting string through the hanging point fastener, and the other end of the left hanging plate and the other end of the right hanging plate are rotatably connected with the mutually buckled shell; the interlocking type shell is of a trapezoidal cylinder structure, the interior of the interlocking type shell is hollow, the section of the interlocking type shell along the straight line is isosceles trapezoid, a trapezoidal groove body is formed, the sections of the two sides of the interlocking type shell are rectangles, and the rectangular section with the smaller size is located at one end far away from the hanging plate; the wedge core body is fixedly sleeved on the insulated conductor and penetrates through the mutually buckled shell, and the wedge core body can clamp the insulated conductor by abutting the outer surface of the wedge core body with the inner surface of the trapezoidal groove of the mutually buckled shell.
2. The closed housing wedge strain clamp of claim 1, wherein: one end of the left hanging plate and one end of the right hanging plate are respectively provided with a hanging point hole, and the left hanging plate and the right hanging plate are connected with a hanging point fastener through the hanging point holes.
3. The closed housing wedge strain clamp of claim 1, wherein: the anti-falling hanging shaft of the interlocking type shell is arranged on the end faces of the two sides of the interlocking type shell respectively, hanging plate waist holes are formed in the other ends of the left hanging plate and the right hanging plate respectively, and the left hanging plate and the right hanging plate are rotatably connected through the anti-falling hanging shaft of the interlocking type shell and the hanging plate waist holes.
4. The closed housing wedge strain clamp of claim 1, wherein: each other knot formula casing comprises left casing and the right casing of symmetry, and the upper and lower terminal surface of left casing and right casing is equipped with a plurality of dogteeth and the recess of mutually supporting, and left casing and right casing pass through dogtooth and recess joint.
5. The closed housing wedge strain clamp of claim 1, wherein: reinforcing ribs can be additionally arranged on the left hanging plate and the right hanging plate.
6. The closed housing wedge strain clamp of claim 1, wherein: the wedge core body comprises a left wedge core body and a right wedge core body which are symmetrical, wedge core wire clamping bolt holes are respectively formed in the upper end face and the lower end face of one end of the left wedge core body and one end of the right wedge core body, and wedge core fasteners penetrate through the wedge core wire clamping bolt holes, so that the left wedge core body and the right wedge core body are fixedly sleeved on the insulated conducting wire.
7. The closed housing wedge strain clamp of claim 6, wherein: inclined teeth are further arranged on the inner surfaces of the left wedge core body and the right wedge core body, which are in contact with the insulated conducting wire.
8. The closed housing wedge strain clamp of claim 6, wherein: and chamfers are arranged at the end heads of the other ends of the left wedge core body and the right wedge core body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011296045.XA CN112332350A (en) | 2020-11-18 | 2020-11-18 | Closed shell wedge-shaped strain clamp for overhead insulated conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011296045.XA CN112332350A (en) | 2020-11-18 | 2020-11-18 | Closed shell wedge-shaped strain clamp for overhead insulated conductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112332350A true CN112332350A (en) | 2021-02-05 |
Family
ID=74321272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011296045.XA Pending CN112332350A (en) | 2020-11-18 | 2020-11-18 | Closed shell wedge-shaped strain clamp for overhead insulated conductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112332350A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0212643A2 (en) * | 1985-08-26 | 1987-03-04 | Georg Fischer Aktiengesellschaft | Cable-anchoring clamp |
| CN201435583Y (en) * | 2009-05-22 | 2010-03-31 | 永固集团股份有限公司 | Quick bolt wedge type tension-endurable wire clamp |
| CN102044854A (en) * | 2009-10-14 | 2011-05-04 | 高裕乾 | Wedge-shaped strain wire clamp |
| CN102136708A (en) * | 2011-01-25 | 2011-07-27 | 永固集团股份有限公司 | Strain clamp for insulated power cables clustered in parallel |
| CN202004402U (en) * | 2011-04-22 | 2011-10-05 | 郭忠恒 | Aluminum alloy wedge-shaped strain clamp |
| CN205212383U (en) * | 2015-12-23 | 2016-05-04 | 永固集团股份有限公司 | Insulating strain clamp for aluminium conductors (cable) steel -reinforced |
| CN107221893A (en) * | 2017-06-08 | 2017-09-29 | 宁波青锋工具有限公司 | A kind of fixing device of insulated conductor |
| CN209072023U (en) * | 2018-11-29 | 2019-07-05 | 北京帕尔普线路器材有限公司 | A kind of wedge strain resistance cable clamp |
| CN110611281A (en) * | 2018-06-17 | 2019-12-24 | 江苏天南电力器材有限公司 | Carbon fiber wire strain backup complete device |
| CN214153953U (en) * | 2020-11-18 | 2021-09-07 | 云南电网有限责任公司 | Closed shell wedge-shaped strain clamp for overhead insulated conductor |
-
2020
- 2020-11-18 CN CN202011296045.XA patent/CN112332350A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0212643A2 (en) * | 1985-08-26 | 1987-03-04 | Georg Fischer Aktiengesellschaft | Cable-anchoring clamp |
| CN201435583Y (en) * | 2009-05-22 | 2010-03-31 | 永固集团股份有限公司 | Quick bolt wedge type tension-endurable wire clamp |
| CN102044854A (en) * | 2009-10-14 | 2011-05-04 | 高裕乾 | Wedge-shaped strain wire clamp |
| CN102136708A (en) * | 2011-01-25 | 2011-07-27 | 永固集团股份有限公司 | Strain clamp for insulated power cables clustered in parallel |
| CN202004402U (en) * | 2011-04-22 | 2011-10-05 | 郭忠恒 | Aluminum alloy wedge-shaped strain clamp |
| CN205212383U (en) * | 2015-12-23 | 2016-05-04 | 永固集团股份有限公司 | Insulating strain clamp for aluminium conductors (cable) steel -reinforced |
| CN107221893A (en) * | 2017-06-08 | 2017-09-29 | 宁波青锋工具有限公司 | A kind of fixing device of insulated conductor |
| CN110611281A (en) * | 2018-06-17 | 2019-12-24 | 江苏天南电力器材有限公司 | Carbon fiber wire strain backup complete device |
| CN209072023U (en) * | 2018-11-29 | 2019-07-05 | 北京帕尔普线路器材有限公司 | A kind of wedge strain resistance cable clamp |
| CN214153953U (en) * | 2020-11-18 | 2021-09-07 | 云南电网有限责任公司 | Closed shell wedge-shaped strain clamp for overhead insulated conductor |
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