CN105470894A - Strain clamp - Google Patents
Strain clamp Download PDFInfo
- Publication number
- CN105470894A CN105470894A CN201510894597.3A CN201510894597A CN105470894A CN 105470894 A CN105470894 A CN 105470894A CN 201510894597 A CN201510894597 A CN 201510894597A CN 105470894 A CN105470894 A CN 105470894A
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- CN
- China
- Prior art keywords
- strain clamp
- clamp body
- connecting pipe
- section
- shaped
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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
- H02G7/02—Devices for adjusting or maintaining mechanical tension, e.g. take-up device
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- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention relates to a strain clamp. The strain clamp comprises a strain clamp body, a steel anchor and a drainage assembly, wherein the strain clamp body is in the shape of a hollow pipe; a pull ring is arranged at one end of the steel anchor; an anchor rod is arranged at the other end of the steel anchor; the anchor rod is inserted in the strain clamp body; a conical section is arranged at the tail end of the strain clamp body; the drainage plate assembly comprises a draw box, a T-shaped crimping pipe, a bolt assembly and a drainage clamp; the inner diameter of the T-shaped crimping pipe is the same as the outer diameter of the strain clamp body; the draw box and the T-shaped crimping pipe form a drainage plate with a racket-shaped cross section; the drainage plate is fixed in the middle of the outer wall of the strain clamp body; and one end of the drainage clamp is fixed in a vertical direction of the T-shaped crimping pipe through the bolt assembly. According to the strain clamp, the problem in the fact that an assembling stringing strain clamp passes through a stringing device such as a pulley or the like is solved; and the drainage plate is connected to the outer side of an aluminum pipe in a crimped manner, so that the area of contact between the drainage plate and the aluminum pipe of the strain clamp is ensured and the electric property of the strain clamp is guaranteed.
Description
Technical field
The present invention relates to strain clamp, specifically relate to drainage plate horizontal strain clamp.
Background technology
Overhead transmission line is when by strain tower, be fixed on strain tower cross-arm by the string of resistance to bracing cable, and use wire jumper to carry out to overhead transmission line the connection that drainage has completed overhead transmission line, at this moment need to use strain clamp to complete fixing between overhead transmission line and strain insulator-string, play and grip wire and the drainage to overhead transmission line, conventional strain insulator folder comprises strain clamp body, steel anchor, drainage plate and drainage tube.
At present, China's ultra high voltage construction has entered comprehensive Accelerating The Construction stage, often run in extra-high voltage project process of construction and other electric pressure engineering circuit crossover phenomenons, in the section lead Poling Construction process of the zone of intersection, crossed line is needed to stop transport, therefore, the time length of zone of intersection section lead Poling Construction determines and is overstated line outage time length.
The method that the lead engineering time is shorter is in the world assembly type overhead method, the method is by accurate measurements and calculations, obtain the length of required wire, correct amount line taking is long, and at two ends crimping and tension-resisting clip, unfolds the stringing method that this section directly hangs up strain tower afterwards, therefore, compared with common stringing method, the method requires that the strain clamp of design must by equipment such as coasters, and its mechanical performance and electric property must engineering demands simultaneously.
Summary of the invention
The present invention is directed to assembly type overhead technological requirement, provide a kind of structural strength high, high reliability, convenient installation, can improve the strain clamp of electric power transfer stability.
For achieving the above object, the invention provides following technical scheme:
A kind of strain clamp, comprise strain clamp body (1), steel anchor (2) and drainage component (3), strain clamp body (1) is hollow tubular, steel anchor (2) one end is draw ring (21) other end is anchor pole (22), anchor pole (22) inserts strain clamp body (1), strain clamp body (1) end is provided with conical section (4), and drainage plate assembly (3) comprising: drawer (31), T-shaped aluminium hydraulic pressed connecting pipe (32), bolt assembly (33) and conduction wire clamp (34); The internal diameter of T-shaped aluminium hydraulic pressed connecting pipe (32) is identical with the external diameter of described strain clamp body (1);
Drawer (31) and T-shaped aluminium hydraulic pressed connecting pipe (32) composition cross section are the drainage plate of racket shape; Drainage plate is fixed in the middle part of the outer wall of strain clamp body (1); One end of conduction wire clamp (34) is fixed on the vertical direction of T-shaped aluminium hydraulic pressed connecting pipe (32) by described bolt assembly (33).
The cross section of drawer (31) is fan-shaped for being less than 180 °; The cross section of T-shaped aluminium hydraulic pressed connecting pipe (32) horizontal direction is be greater than 180 ° fan-shaped, and the cross section two ends of T-shaped aluminium hydraulic pressed connecting pipe (32) horizontal direction are that L-type extends neck;
Drawer (31) extends neck along L-type to be slipped in described T-shaped aluminium hydraulic pressed connecting pipe (32), and drawer (31) is fixedly connected with described T-shaped aluminium hydraulic pressed connecting pipe (32).T-shaped aluminium hydraulic pressed connecting pipe (32) and conduction wire clamp (34) angle are 90
.-180
。。
Anchor pole (22) comprising: solid section (5) and hollow tube (6); One end of solid section (5) is connected with steel anchor (2), and the other end is connected with hollow tube (6); The axial cross section of solid section (5) is the groove of undulate.
The internal diameter of conical section (4) is identical with the external diameter of steel reinforced aluminium conductor; Steel core in steel reinforced aluminium conductor, through after described strain clamp body (1), penetrates in hollow tube (6) by steel reinforced aluminium conductor.
Strain clamp body (1) and drainage component (3) all adopt the aluminium alloy of hot extrusion molding to make.The material hardness of steel anchor (2) is lower than steel core material hardness.
The aluminium alloy that the component that strain clamp body (1) is following parts by weight is made;
Aluminium 89-93 part, iron 4-6 part, manganese dioxide 3-6 part, magnesium 3-5 part, titania fiber 1-2 part, tin 1-1.5 part, tungsten carbide 0.5-1 part, particle diameter are nano zine oxide 0.05-1 part of 8-12, graphene nanometer sheet 0.05-0.1 part and vanadic oxide 0-0.5 weight portion.
With immediate prior art ratio, the present invention has following beneficial effect:
1, the present invention adopts ripe fluid pressure type splicing sleeve, and compression joint technique is ripe, and crimp quality is easily protected.
2, fluid pressure type strain clamp of the present invention, its steel anchor is designed to grooved syndeton, and size coordinates with pulling equipment bindiny mechanism.
3, drainage plate of the present invention and aluminum pipe are split-type structural form, adopt and first steel anchor, aluminum pipe, wire are crimped, carry out Poling Construction, after construction, adopt compressive connection in air, again drainage plate and aluminum pipe are crimped together, to ensure the safe, reliable of crimping.
4, instant invention overcomes the problem that the overhead line erecting equipments such as coaster crossed by assembly type overhead strain clamp, drainage plate is crimped on outside aluminum pipe, ensure the contact area of strain clamp drainage plate and aluminum pipe, ensure its electrical characteristic.
5, through the aluminium stranded conductor after stripping in the strain clamp aluminum pipe designed by the present invention, the stable gripping of aluminium stranded conductor after crimping, is ensured.
Accompanying drawing explanation
Fig. 1 is steel reinforced aluminium conductor structure chart of the present invention;
Fig. 2 is the combination section of strain clamp of the present invention;
Fig. 3 is the bulk junction composition of strain clamp of the present invention;
Fig. 4 is drainage plate cross sectional representation of the present invention;
Fig. 5 is drawer structure chart of the present invention;
Fig. 6 is steel anchor structure figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described further:
Strain clamp combination shown in Fig. 2 comprises: body 1, steel anchor 2 and drainage component 3.Wherein, body 1 is hollow tubular, and shell adopts aluminium alloy to make; Steel anchor 2 and body 1 are crimped together by hydraulic press, and steel anchor 2 comprises: draw ring 21 and anchor pole 22, and draw ring 21 is annular, it has circular hole 211; Anchor pole 22 comprises: solid section 5 and hollow tube 6; The hollow tube 6 of anchor pole 22 inserts body 1, body 1 connects drainage plate assembly 3, and drainage plate assembly 3 comprises: drawer 31, T-shaped aluminium hydraulic pressed connecting pipe 32, bolt assembly 33 and conduction wire clamp 34; T-shaped aluminium hydraulic pressed connecting pipe 32 upper end is provided with fan-shaped snap ring, and the angle of fanning circumferential clasp place fan-shaped is greater than 180 °, and the two ends of fan circumferential clasp are that L-type extends neck; The cross section of drawer 31 is fan-shaped for being less than 180 °; Drawer 31 and T-shaped aluminium hydraulic pressed connecting pipe 32 form drainage plate, conduction wire clamp 34 is fixed on the bottom of drainage plate by bolt assembly 33, for the conducting of electric current, there are 30 ° of inclination angles in drainage plate and conduction wire clamp 34, and wherein bolt assembly 33 is made up of bolt, nut, plain cushion and bullet pad.Body 1 end is provided with conical section 4, the head end that conical section 4 avoids body 1 in crimping process because stress is concentrated, and the distortion caused.
In actual applications, overhead transmission line mostly is steel reinforced aluminium conductor, and wherein, the pulling force that overhead transmission line is subject to is born jointly by steel core and aluminium stranded conductor, and aluminium stranded conductor is also for transmission current.
During construction, by the steel reinforced aluminium conductor of overhead transmission line through strain clamp body 1, and steel core is wherein inserted in the hollow tube 6 of steel anchor 2.Subsequently, the hollow tube of steel anchor 2 is pressurizeed, make it to be crimped together with steel core.And the weight load of wire is delivered on the draw ring 21 of steel anchor, the draw ring 21 of steel anchor is connected to transmission steel tower completing weight load again by gold utensil.
The hollow tube 6 of steel anchor 2 is inserted in strain clamp body 1, for gripping steel core together with solid section 5; Subsequently, then to the position pressurization that strain clamp body 1 contacts with solid section 5, steel anchor 2 and strain clamp body 1 is made can to form clamping combination; The solid section 5 of steel anchor adopts the groove of axial cross section undulate to connect in crimp segment, avoids the damage crimping and cause, effectively prevents the infiltration of outside aqueous vapor.In addition, also the tube wall that overhead transmission line contacts with strain clamp body 1 to be pressurizeed, thus realize the combination of overhead transmission line and strain clamp body 1.
Then, coaster is utilized to carry out unwrapping wire and hanging wire, select the T-shaped aluminium hydraulic pressed connecting pipe 32 of appropriate size, make the fan-shaped snap ring internal diameter of T-shaped aluminium hydraulic pressed connecting pipe 32 identical with the external diameter of main body 1, drawer 31 to be slipped in fan-shaped snap ring and to crimp, thus drawer 31 is fixedly connected with fan-shaped snap ring, after drawer 31 is connected with fan-shaped snap ring, the cross section of its assembly is complete annular, make the connection of itself and body 1 more fastening, meanwhile, also make the pulley of coaster more easily by.
When overhead transmission line normally runs, current trend is from overhead transmission line to strain clamp body, the wire jumper in conduction wire clamp and overhead transmission line, i.e. drainage thread, connect, then arrive wire jumper through the drainage of drainage plate and drainage tube, thus the electric current in body 1 is introduced in wire jumper.The strain clamp body 1 that the present invention adopts aluminium alloy to make, the D.C. resistance of whole wire reduces, and improves electric conductivity, has obvious advantage in engineer applied.
In order to avoid the generation of galvano-cautery as far as possible, the strain clamp body directly or indirectly contacted with the aluminium stranded conductor in power transmission line, drainage component are the aluminium alloy of hot extrusion molding, and compared with the drainage plate of casting in the past, hot extrusion molding aluminium has more strength advantage.
The material of the steel core in the material of steel anchor and power transmission line is different: the hardness ratio steel core of steel anchor material is low, and during in order to crimp, steel anchor deformable squeeze enters in steel core gap, when avoiding steel core crimping simultaneously, and the damage that may be subjected to.
In practical application, those skilled in the art can select the material of each parts of strain clamp flexibly according to the material of overhead transmission line use.
It should be noted that, the strain clamp in above embodiment is hydraulic tension-proof wire clip.During construction, need use hydraulic press combine with strain clamp in compressed by pressure part by the punching block that pressure part is suitable, make to be produced plastic deformation by pressure part, thus by strain clamp with overhead transmission line in conjunction with as a whole.
Strain clamp body 1 is the aluminium alloy that the component of following parts by weight is made;
Aluminium 89-93 part, iron 4-6 part, manganese dioxide 3-6 part, magnesium 3-5 part, titania fiber 1-2 part, tin 1-1.5 part, tungsten carbide 0.5-1 part, particle diameter are nano zine oxide 0.05-1 part of 8-12, graphene nanometer sheet 0.05-0.1 part and vanadic oxide 0-0.5 weight portion.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; those of ordinary skill in the field still can modify to the specific embodiment of the present invention with reference to above-described embodiment or equivalent replacement; these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, are all applying within the claims of the present invention awaited the reply.
Claims (8)
1. a strain clamp, comprise strain clamp body (1), steel anchor (2) and drainage component (3), described strain clamp body (1) is hollow tubular, described steel anchor (2) one end is draw ring (21) other end is anchor pole (22), described anchor pole (22) inserts described strain clamp body (1), described strain clamp body (1) end is provided with conical section (4), it is characterized in that
Described drainage plate assembly (3) comprising: drawer (31), T-shaped aluminium hydraulic pressed connecting pipe (32), bolt assembly (33) and conduction wire clamp (34);
The internal diameter of described T-shaped aluminium hydraulic pressed connecting pipe (32) is identical with the external diameter of described strain clamp body (1);
Described drawer (31) and described T-shaped aluminium hydraulic pressed connecting pipe (32) composition cross section are the drainage plate of racket shape;
Described drainage plate is fixed in the middle part of the outer wall of described strain clamp body (1);
One end of described conduction wire clamp (34) is fixed on the vertical direction of described T-shaped aluminium hydraulic pressed connecting pipe (32) by described bolt assembly (33).
2. strain clamp according to claim 1, is characterized in that, the cross section of described drawer (31) is fan-shaped for being less than 180 °; The cross section of T-shaped aluminium hydraulic pressed connecting pipe (32) horizontal direction is be greater than 180 ° fan-shaped, and the cross section two ends of described T-shaped aluminium hydraulic pressed connecting pipe (32) horizontal direction are that L-type extends neck (311);
Described drawer (31) extends neck along described L-type to be slipped in described T-shaped aluminium hydraulic pressed connecting pipe (32), and described drawer (31) is fixedly connected with described T-shaped aluminium hydraulic pressed connecting pipe (32).
3. strain clamp according to claim 1, is characterized in that, described T-shaped aluminium hydraulic pressed connecting pipe (32) and described conduction wire clamp (34) angle are 90o-180o.
4. strain clamp according to claim 1, is characterized in that, described anchor pole (22) comprising: solid section (5) and hollow tube (6); One end of described solid section (5) is connected with described steel anchor (2), and the other end is connected with described hollow tube (6); The axial cross section of described solid section (5) is the groove of undulate.
5. strain clamp according to claim 1, is characterized in that, the internal diameter of described conical section (4) is identical with the external diameter of steel reinforced aluminium conductor;
Steel core in described steel reinforced aluminium conductor, through after described strain clamp body (1), penetrates in described hollow tube (6) by described steel reinforced aluminium conductor.
6. strain clamp according to claim 1, is characterized in that, described strain clamp body (1) and described drainage component (3) all adopt the aluminium alloy of hot extrusion molding to make.
7. strain clamp according to claim 1, is characterized in that, the material hardness of described steel anchor (2) is lower than steel core material hardness.
8. strain clamp according to claim 1, is characterized in that, the aluminium alloy that the component that described strain clamp body (1) is following parts by weight is made;
Aluminium 89-93 part, iron 4-6 part, manganese dioxide 3-6 part, magnesium 3-5 part, titania fiber 1-2 part, tin 1-1.5 part, tungsten carbide 0.5-1 part, particle diameter are nano zine oxide 0.05-1 part of 8-12, graphene nanometer sheet 0.05-0.1 part and vanadic oxide 0-0.5 weight portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510894597.3A CN105470894A (en) | 2015-12-08 | 2015-12-08 | Strain clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510894597.3A CN105470894A (en) | 2015-12-08 | 2015-12-08 | Strain clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105470894A true CN105470894A (en) | 2016-04-06 |
Family
ID=55608341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510894597.3A Pending CN105470894A (en) | 2015-12-08 | 2015-12-08 | Strain clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105470894A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221895A (en) * | 2017-06-12 | 2017-09-29 | 中国电力科学研究院 | assembled strain clamp protection device |
| CN107294035A (en) * | 2017-06-16 | 2017-10-24 | 国家电网公司 | Strain clamp construction method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201069828Y (en) * | 2007-06-25 | 2008-06-04 | 四平线路器材厂 | T-shape line clamper for carbon fiber compound core lead |
| CN103956596A (en) * | 2014-04-25 | 2014-07-30 | 国家电网公司 | Crimping jumper wire drainage hardware fitting |
| CN104451475A (en) * | 2014-12-15 | 2015-03-25 | 苏州宽温电子科技有限公司 | Aluminum alloy composite material and preparation method thereof |
-
2015
- 2015-12-08 CN CN201510894597.3A patent/CN105470894A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201069828Y (en) * | 2007-06-25 | 2008-06-04 | 四平线路器材厂 | T-shape line clamper for carbon fiber compound core lead |
| CN103956596A (en) * | 2014-04-25 | 2014-07-30 | 国家电网公司 | Crimping jumper wire drainage hardware fitting |
| CN104451475A (en) * | 2014-12-15 | 2015-03-25 | 苏州宽温电子科技有限公司 | Aluminum alloy composite material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107221895A (en) * | 2017-06-12 | 2017-09-29 | 中国电力科学研究院 | assembled strain clamp protection device |
| CN107294035A (en) * | 2017-06-16 | 2017-10-24 | 国家电网公司 | Strain clamp construction method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160406 |
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| RJ01 | Rejection of invention patent application after publication |