CN201421995Y - Conical skid-proof strain clamp - Google Patents
Conical skid-proof strain clamp Download PDFInfo
- Publication number
- CN201421995Y CN201421995Y CN2009200681572U CN200920068157U CN201421995Y CN 201421995 Y CN201421995 Y CN 201421995Y CN 2009200681572 U CN2009200681572 U CN 2009200681572U CN 200920068157 U CN200920068157 U CN 200920068157U CN 201421995 Y CN201421995 Y CN 201421995Y
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- clamp
- jaw
- skidding
- shell
- conical
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Abstract
The utility model relates to a conical skid-proof strain clamp used in electric power overhead line terminals or sectioned strain devices, comprising: a conical shell with double-ear mounted U-shapedpulling rings arranged at the two sides thereof, and three skid-proof clamping claws arranged inside the shell. A claw pushing spring, a claw distributing spring and a claw clamping spring check ring,which are associated in convex-concave ridges, are arranged at the inner side of the shell. A concave groove is arranged outside the conical shell, the large-end end surface of the shell is providedwith a pressure spring end cover. The U-shaped pulling ring is provided with an extended thread that fine tunes the conductor sag. The utility model is novel in structure, is made from non-magnetic energy-saving material, overcomes a plurality of defects of the outdated armor clamp, not only has slight and beautiful appearance, but also is quite convenient and safe in use, as well as reliable in performance.
Description
Technical field:
The utility model belongs to the electric power electric power equipment that electric overhead transmission line uses of providing and delivering.
Provide and deliver gripping of electric overhead transmission line bare wire or insulated conductor strain section and outstanding pull and support the taper type anti-skidding strain clamp that lead is used of a kind of electric power.
Background technology:
Also a large amount of power consumption strain insulator gold utensils that fall behind that use on China's power circuit, these gold utensils are to make based on the magnetic material of malleable cast iron basically, structure is extremely unreasonable, the thick heaviness of outward appearance, it is very inconvenient to use, and the energy consumption waste is huge, structure forms the closed-loop path, magnetic hysteresis eddy current loss is big, and every wire clamp average year power consumption 500KW/h wastes more than 200 yuan.Power consumption almost is several times that wire clamp is worth, can not adapt to the needs of electrical network modernization construction fully.
After the nineties, China carries out upgrading urban and rural power grids on a large scale, and particularly power distribution network insulating transformation dynamics is very big, and overhead wire generally adopts insulated wire.But insulated wire brings several problems when the strain insulator backguy is installed: a kind of is that cost is big, the destruction insulating barrier is installed the peeling that the insulation safety coefficient reduces, difficulty of construction is big; Another kind is to adopt wedge type insulation strain clamp, and its structure and performance are: open type metal shell, interior installation have two stressed left and right sides plastics wedge clamp bars.During installation insulated conductor directly is placed in and utilizes the gradient tension on the wedge clamp bar circular arc.This wire clamp brings easy for installation because of not needing to divest wire insulation, cost is lower, but also there is bigger problem: because of being the metal shell of open mouth type design, in servicely reducing the back with metal shell intensity and under long-term tension, dehisce to locate grip is reduced gradually; Most importantly left and right sides plastics wedge clamp bar, have only two stressedly can not guarantee the lead of holding with a firm grip long-term effectively, the insulating barrier mechanical performance of insulated conductor own is relatively poor, tensile strength has only about 12Mpa, particularly when electricity consumption moves, when lead is warmed up to the 70 degree left and right sides, its mechanical performance is just poorer, add mouthful insulating layer exposing of place's lead of opening a business and easily make ageing of plastics outside, can produce the insulating barrier creep and uphold and extract out core, last wire clamp is held incessantly lead and is caused and slide or loose core and to the consequence that goes offline.
Summary of the invention:
The purpose of the utility model patent, it is the truth of running into according in China recent years consumers' opinions and the electric network reconstruction, and develop close cartridge type self-locking shell, mix the anti-skidding clamp three-jaw of large tracts of land of wrapping around the wedge type self-locking and scalable line-sag with high-strength alloy material, taper shape, the structures such as draw ring that can bear mechanical load are main taper type anti-skidding strain clamp.The utility model patent with the high-strength nonmagnetic alloy material, has not only been avoided the electric energy consumption loss, and structure is light and handy, good looking appearance, highly versatile, has brought convenience to construction, has also reduced operating cost; Taper shape closes cartridge type wedge type self-locking device, and the long-term grip of wire clamp is not reduced, and mixes the wire-clamping device of the large tracts of land clamp three-jaw of wrapping around the wedge type self-locking, makes the gripping lead be with tighter and tighter, and is last constant in permanently effective grip force.Because large tracts of land wraps insulated wire all around and do not expose in the sun again, wire insulation is difficult for creep looses core, and installs and uses safety and reliability; Can when the power distribution network insulating is transformed, be used for aerial insulated wire strain insulator backguy usefulness, also can in built on stilts plain conductor strain insulator backguy, use.Owing to its special structure design, overcome the various drawbacks of old-fashioned gold utensil fully, line materials is a a progressive step to " low energy consumption, fault-free, long-life, exemption from inspection " direction.
The technical solution of the utility model is: taper type anti-skidding strain clamp is by conical shell 2, stage clip end cap 3, and the spring 4 of pawling, anti-skidding clamp three-jaw 5, hoop latch spring back-up ring 6, equal latch springs 7, U type draw ring 8 assembles.
Being provided with in two sides of conical shell 2, one ends respectively has a through hole 2.2 in ears 2.1, two ears, can be spirally connected with U type draw ring 8, holds internal orifice to be provided with screw thread 2.4 greatly and is threaded with stage clip end cap 3.(screw thread 2.4 on the housing 2 big ends can not wanted yet, and makes unthreaded hole, this moment should be at it outside the corresponding position on the face of garden, increase by 2 holding screws, end cap external screw thread 3.2 places that the while is being mated, increase a circumferential groove, be used to hold holding screw, thus fixing end cap 3.) being provided with conical through-hole 2.5 and anti-skidding clamp three-jaw 5 couplings in the housing, the conical shell external surface is provided with a plurality of male and fomale(M﹠F)s 2.3, and its small end is outward a round-corner transition, and conical shell 2 is the intensity main casings that contain whole strain clamp.
Stage clip end cap 3, it is the end cap of the last encapsulation of whole device in the conical shell 2, the outer face is oblique cambered surface 3.1, the inner is provided with annular groove 3.4, the spring 4 of pawling can be installed, and the end cap outside has external screw thread 3.2 and conical shell 2 big ends 2.4 to be spirally connected, and end cap is provided with center inner via hole 3.3 can pass through lead, Kong Yiduan establishes chamfering, outer end endoporus round-corner transition and do not make lead outer surface tension damage.
Anti-skidding clamp three-jaw 5, form a cone and leave appropriate gap by three identical clamp pawl 5.1 ring-types are uniform, be loaded on by three equal latch springs 7 therebetween and evenly support anti-skidding clamp three-jaw 5 in 5.6 spaces of anti-skidding clamp three-jaw 5, the conical through-hole 2.5 that its outside is provided with in tapering 5.2 and the cone shell 2 is complementary, its nearly big end outside is provided with a groove 5.4, can adorn hoop latch spring back-up ring 6, the intrados of three-jaw is provided with groove groove 5.5 and clenches lead to increase frictional force, and the three-jaw outer end is that small end inboard (line outlet) is provided with when circular arc chamfering 5.7 is convenient to lead is installed and passes in and out.
Hoop latch spring back-up ring 6, be the ring bodies of an opening, its be installed in anti-skidding clamp three-jaw 5 5.4 on, interface is provided with the opposite chamfer of angle direction 6.1, be used for fixing three clamp pawls 5, be in all the time when three clamp pawls 5 are are axially come and gone and be synchronized with the movement at circumferencial direction.
Equal latch spring 7, its two end is installed in respectively on 5.6 gaps of anti-skidding clamp three-jaw 5;
U type draw ring 8, small end are the semicircle arcuation, and big end is openend, which is provided with screw thread 8.1 be assemblied in conical shell 2 2.2 on.
Description of drawings:
Fig. 1 is the utility model structural representation;
Fig. 2 is the conical shell structure chart;
Fig. 3 is a stage clip end cover body structure chart;
Fig. 4 is the spring structure schematic diagram of pawling;
Fig. 5 is anti-skidding clamp three-jaw structural representation;
Fig. 6 is a hoop latch spring back-up ring structure chart;
Fig. 7 is equal latch spring structure chart;
Fig. 8 is a U type draw ring structure chart;
Fig. 9 is insulated wire mounting structure figure;
Figure 10 is bare wire mounting structure figure.
Wherein: 1-is a cable; 2-is a conical shell; 3-is the stage clip end cap; 4-is the spring of pawling; 5-is anti-skidding clamp three-jaw; 6-is a hoop latch spring ring washer; The equal latch spring of 7-; 8-is a U type draw ring; 2.1-be ears; 2.2-be the ears endoporus; 2.3-be the male and fomale(M﹠F) of conical shell external surface; 2.4-be the screw thread of the big end internal orifice of conical shell; 2.5-be the through hole in the conical shell; 3.1-be the oblique cambered surface of stage clip end cap outer face; 3.2-be the external screw thread of end cap outside; 3.3-be the through hole at end cap center; 3.4-be the annular groove in the end cap; 5.1-be three identical clamp pawls; 5.2-be the tapering of clamp pawl outside; 5.3-be the intermediate throughholes that three-jaw surrounds; 5.4-be the groove in the clamp pawl large end face outside; 5.5-be the groove groove on the clamp pawl intrados; 5.6-be the radial gap of three-jaw; 5.7-be the circular arc chamfering of three-jaw small end inboard; 6.1-be the chamfering of hoop latch spring ring washer 6 openends; 8.1-be the screw thread on the big end opening end of U type link.
Below in conjunction with marginal data embodiment of the present utility model.
Embodiment
When circuit is installed and used, all assemble taper type anti-skidding strain clamp as previously mentioned after, utilize wire head or specific purpose tool to aim at the endoporus of three anti-skidding clamp three-jaws toward interior propelling appropriate location.Because the endoporus of conical shell 2 is tapered, anti-skidding clamp three-jaw 5 is shifted laterally by the elastic force effect of three equal latch springs 7, and the aperture enlarges is convenient to the lead insertion.Lead inserts suitable length, decontrol wire grip then, utilize the lead self-weight tension, three anti-skidding clamp pawls 5 at this moment are because the effect of the spring 4 of pawling, three and then displacements outward of anti-skidding clamp pawl 5, anti-skidding clamp pawl 5 inside threads were tightly wrapped up in and were held lead this moment, and wire tension is big more, because the tapering effect, adding some concavo-convex screw-types again, to wrap up in the power of holding lead also big more, guarantees instructions for use.The design feature of this device is that there is cone-shaped inner hole the overcoat inboard.Three unique clamp pawls of holding face are greatly arranged in the overcoat, and according to required line footpath size, the clamp pawl can inwardly or outwards move axially, so it is big to be suitable for wire range.Because clamp pawl inboard makes concavo-convex groove, there is the best tapering of wedge shape self-locking in the outside, and lead pulling force outward is big more, and three clamp pawls wrap up in that to hold lead big more, a kind of really desirable strain clamp.The clamp pawl is provided with size specification, uses so can satisfy the plurality of specifications lead.
In order to satisfy the insulated conductor and the plain conductor of many specifications that present overhead transmission line uses, the utility model is provided with size specification conical shell 2 and the anti-skidding clamp three-jaw 5 of size specification.When using insulated conductor, the anti-skidding clamp three-jaw 5 that can select engineering plastics to make; When using plain conductor, the anti-skidding clamp three-jaw 5 that can select aluminium alloy to make.U type draw ring 8 adopts nonmagnetic material, and its two ends thread segment length is about 100mm, can finely tune the degree of tightness needs.
Claims (7)
1. one kind is used for gripping and the outstanding taper type anti-skidding strain clamp that pulls and supports lead of overhead transmission line bare wire or insulated conductor strain section, it is characterized in that by conical shell (2), stage clip end cap (3), the spring (4) of pawling, anti-skidding clamp three-jaw (5), hoop latch spring back-up ring (6), equal latch spring (7), U type draw ring (8) is formed.
2. strain clamp according to claim 1, wherein, conical shell (2), it is characterized in that: the big end outside is provided with ears (2.1), one through hole (2.2) is respectively arranged in two ears, can be spirally connected with U type draw ring (8), big end is provided with internal thread (2.4) for inboard mouthful and is threaded with stage clip end cap (3), be provided with conical through-hole (2.5) and anti-skidding clamp three-jaw (5) coupling in the housing, housing outer surface is established a plurality of rounding off male and fomale(M﹠F)s (2.3), its small end exterior angle is a round-corner transition, and conical shell (2) is the intensity main casing that contains whole strain clamp.
3. strain clamp according to claim 1, wherein, stage clip end cap (3), it is characterized in that: the end cap that is the last encapsulation of whole device in the conical shell (2), the outer face is oblique cambered surface (3.1), the inner is provided with annular groove (3.4), the spring of pawling (4) can be installed, the end cap outside has external screw thread (3.2) and the big end of conical shell (2) (2.4) to be spirally connected, end cap is provided with center inner via hole (3.3) can pass through lead, Kong Yiduan establishes chamfering, outer end endoporus round-corner transition and do not make lead outer surface tension damage.
4. strain clamp according to claim 1, wherein, the spring (4) of pawling, it is characterized in that: two ends should be more parallel, big end is installed in the groove (3.4) of stage clip end cap (3), small end pushes away and is affixed on anti-skidding clamp three-jaw (5) big end surface, plays anti-skidding clamp three-jaw (5) and moves axially in hole (2.5), can synchronous back and forth effect.
5. strain clamp according to claim 1, wherein, anti-skidding clamp three-jaw (5), it is characterized in that: form a cone and leave appropriate gap by three identical clamp pawls (5.1) ring-type is uniform, be loaded on by three equal latch springs (7) therebetween and evenly support anti-skidding clamp three-jaw (5) in (5.6) space of anti-skidding clamp three-jaw (5), the conical through-hole (2.5) that its outside is provided with in tapering (5.2) and the cone shell (2) is complementary, its nearly big end outside is provided with a groove (5.4), can adorn hoop latch spring back-up ring (6), the intrados of three-jaw is provided with groove groove (5.5) and clenches lead to increase frictional force, and the three-jaw outer end is that the small end inboard also is that line outlet is provided with circular arc chamfering (5.7) and passes in and out when being convenient to lead is installed.
6. strain clamp according to claim 1, wherein, hoop latch spring back-up ring (6), it is characterized in that: the ring bodies that is an opening, it is installed on (5.4) of anti-skidding clamp three-jaw (5), opening two ends are provided with the opposite chamfer of angle direction (6.1), are used for fixing three clamp pawls (5) at circumferencial direction, are in all the time when three clamp pawls (5) are are axially come and gone to be synchronized with the movement.All its two end of latch spring (7) is installed in respectively on (5.6) gap of anti-skidding clamp three-jaw (5).
7. strain clamp according to claim 1, wherein, U type link (8) is characterized in that: small end is the semicircle arcuation, and big end which is provided with screw thread (8.1) for openend, is assemblied on (2.2) of cone shell (2), and being spirally connected forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200681572U CN201421995Y (en) | 2009-02-27 | 2009-02-27 | Conical skid-proof strain clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200681572U CN201421995Y (en) | 2009-02-27 | 2009-02-27 | Conical skid-proof strain clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201421995Y true CN201421995Y (en) | 2010-03-10 |
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ID=41808656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200681572U Expired - Fee Related CN201421995Y (en) | 2009-02-27 | 2009-02-27 | Conical skid-proof strain clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201421995Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247987A (en) * | 2012-02-03 | 2013-08-14 | 石春梅 | Multifunctional instant aluminum alloy grip strength strain clamp |
| CN104426107A (en) * | 2013-08-22 | 2015-03-18 | 上海兆邦电力器材有限公司 | Tapered anti-skidding strain clamp |
| CN104536111A (en) * | 2014-11-24 | 2015-04-22 | 国家电网公司 | Short-span tapered strain clamp for ADSS optical cable |
| CN106786288A (en) * | 2016-12-13 | 2017-05-31 | 马鞍山市华能电力线路器材有限责任公司 | A kind of frost-cracking-preventing double shielding formula suspension clamp |
| CN110799437A (en) * | 2017-04-21 | 2020-02-14 | 豪倍公司 | Wedge-shaped cable clamp |
-
2009
- 2009-02-27 CN CN2009200681572U patent/CN201421995Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247987A (en) * | 2012-02-03 | 2013-08-14 | 石春梅 | Multifunctional instant aluminum alloy grip strength strain clamp |
| CN104426107A (en) * | 2013-08-22 | 2015-03-18 | 上海兆邦电力器材有限公司 | Tapered anti-skidding strain clamp |
| CN104536111A (en) * | 2014-11-24 | 2015-04-22 | 国家电网公司 | Short-span tapered strain clamp for ADSS optical cable |
| CN106786288A (en) * | 2016-12-13 | 2017-05-31 | 马鞍山市华能电力线路器材有限责任公司 | A kind of frost-cracking-preventing double shielding formula suspension clamp |
| CN110799437A (en) * | 2017-04-21 | 2020-02-14 | 豪倍公司 | Wedge-shaped cable clamp |
| CN110799437B (en) * | 2017-04-21 | 2021-01-22 | 豪倍公司 | Wedge-shaped cable clamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 201315 C-20, Lane 3188, Sau Pu Road, Shanghai, Pudong New Area Patentee after: Shanghai Zhaobang Electrical Material Co., Ltd. Address before: 200235, room 3, building 2366, No. 2706 West Zhongshan Road, Shanghai Patentee before: Shanghai Zhaobang Electrical Material Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100310 Termination date: 20180227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |