CN103401199A - Tension clamp - Google Patents

Abstract

The invention discloses a tension clamp. The tension clamp comprises a tension clamp body, a steel anchor and a drainage tube, wherein the tension clamp body is a hollow tube body, and an inner wedge of the hollow tube body is of an elliptic shape. By improving the shape of the inner wedge of the tension clamp to the elliptic shape, after the stressed creep deformation of a conducting wire, the conducting wire is in good contact with the inner wedge, so that the gripping force of the tension clamp can be improved, and the conducting wire can be well fixed.

Description

A kind of strain clamp

Technical field

The present invention relates to a kind of wire clamp, more particularly, relate to a kind of strain clamp.

Background technology

Along with Chinese national economy constantly increases, the fast development of economic construction scale, the relevant industries such as especially communication, the energy, electronic traffic and power transmission and transformation are first developed, and development speed is fast surprising especially, and power construction has also entered a brand-new developing period.

Electric armour clamp development at present can not meet the development need of power construction day by day, and in the power construction industry, the strain clamp of power transmission sequence wire can be divided into: the several types such as screw bolt-type, compressibility, preformed type and wedge type.

The inventor is through repeatedly practice discovery, and the grip of existing several strain clamps is inadequate at present, the loosening of wire easily occurs loose core.

Summary of the invention

For addressing the above problem, the invention provides a kind of strain clamp, inadequate in order to solve in prior art the strain clamp grip, cause the loosening problem of loosing core of wire.

The invention provides a kind of strain clamp, comprising:

Strain clamp body, steel anchor and drainage tube;

Described strain clamp body, be a hollow tube, and the interior wedge of described hollow tube is oval; Run through and stretch into and with the steel anchor, form combination for the wire of transmission of electricity, to be fixed at described strain clamp body, and the drainage plate that is provided with in select location of described strain clamp body, described drainage plate has a jag jaws and a plurality of lockhole;

The steel anchor, be a latch form, its front end is one section hollow blind pipe, stage casing is one to have the solid part of a plurality of ring ribs, back segment is one can be connected in the hanging hole of insulator, and front end hollow blind pipe is inserted in and bestows the draw and clamping combination for the steel strand wire of wire inside, then the draw is bestowed at strain clamp body and the mutual coupling position of ring rib solid part again, make steel anchor and strain clamp body form clamping combination, the contracting of exerting pressure again of the tube wall position of wire and crimping and tension-resisting clip body;

Drainage tube, it is the hollow blind pipe that a head end is writing board shape, its head end has a flat board, back segment is a hollow blind pipe, on this flat board and be provided with lockhole, and lockhole is corresponding with the lockhole of drainage plate, makes the hollow blind pipe implantable in conjunction with a wire jumper, insert the jag jaws of drainage plate when the flat board of drainage tube head end, namely to lock to obtain good plant by bolt sealed for nationality.

Can find out from technique scheme, it is oval passing through in the present invention the improved shape of wedge in strain clamp, after the stressed creep of wire, better with interior wedge contact, improved the grip of strain clamp with this, better fixing cord.

Description of drawings

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, the accompanying drawing that the following describes is only some embodiment that put down in writing in the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the combination stereogram of strain clamp provided by the invention;

Fig. 2 is the exploded perspective view of strain clamp provided by the invention;

Fig. 3 is the combination section of strain clamp provided by the invention;

Fig. 4 is that the another kind that the present invention adopts two dull and stereotyped patterns to form drainage plate is implemented illustration;

Fig. 5 is the view that known overhead power transmission connects to form.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment that obtains, belong to protection scope of the present invention.

At first as shown in Figure 5, known height hang on the overhead power transmission conducting wire 20 between most steel towers 10, when wire 20 passes through steel tower 10, this transmission pressure 20 is connected by with wire jumper 30, forming to cross over, the two ends of steel tower 10 also are respectively equipped with insulator 40 and strain clamp 50.

As shown in Figure 1, Figure 2, Fig. 3 and shown in Figure 4, the strain clamp that the present invention proposes, its composition comprises strain clamp body 1, a steel anchor 2 and a drainage tube 3; Wherein:

Strain clamp 1, be a hollow tube, and the interior wedge of described hollow tube is oval; It provides the steel strand wire 201 of wire 20 inside of transmission of electricity to run through deeply and is combined with the 2 formation crimping of steel anchor, to be fixed at this strain clamp body 1, only this strain clamp body 1 is provided with a Y type or two plate drainage plate 11 or 11`(such as Fig. 4 in select location), make Y type or two plate drainage plate 11 or 11` have a slit port a and a plurality of lockhole 112.

steel anchor 2, be a latch form, its front end is one section hollow blind pipe 21, stage casing is one to have the solid part 22 of negative ring rib, back segment is one can be connected in the hanging hole 23 of insulator 40, front end hollow blind pipe 21 is inserted in for the steel strand wire 201 of wire 20 inside and bestows the draw and form clamping combination, and then make steel anchor 2 return the rear formation of strain clamp body 1 location, and and then bestow again the draw at crimping and tension-resisting clip body 1 and the mutual coupling position 13 of ring rib heart section 22, make steel anchor 2 and strain clamp body 1 can form the contracting (as shown in Figure 3) of exerting pressure again of clamping combination and wire 20 and the tube wall position 14 of crimping and tension-resisting clip body 1.

Drainage tube 3, for being the hollow blind pipe that a head end is writing board shape, its head end has a flat board 31, back segment is a hollow blind pipe 32, on this flat board 31 and be provided with lockhole 311, and lockhole 311 is corresponding with the lockhole 112 of drainage plate 11 or 11`, makes hollow blind pipe 32 implantable in conjunction with a wire jumper 30, insert the jag jaws a of drainage plates 11 or 11` when the flat board 31 of drainage tube 3 head ends, namely to lock to obtain good plant by bolt 33 sealed for nationality.

According to the composition of above-mentioned strain clamp, described Y type or two plate drainage plate 11 or 11` can utilize welding or directly casting and one is incorporated into strain clamp body 1, and its bonding position, angle or position, visual actual needs and arbitrary decision.

Because the head end of drainage tube 3 is flat boards 31 of a single sheet, therefore it is sealed easily to plant, simplify the assembling construction of work high above the ground, also can not increase workmen's weighing load, and with Y type or two plate drainage plate 11 or 11`, plant after sealed and can have good double contact area, its current delivery effect is stable ideal more, extremely is fit to provide the wire 20 of steel tower 10 and wire jumper 30 conducts to interconnect use.

Strain clamp of the present invention and former wire clamp, the main distinction be, in former wire clamp, wedge is semicircular, after wire was stressed, wire was deformed into ellipse, and oval-shaped wire coordinates bad with semicircular interior wedge, after causing the stressed creep of wire, slippage occurs.And strain clamp of the present invention mainly by improve interior wedge be shaped as ellipse after, better with interior wedge contact after the stressed creep of wire, improve grip with this.

Finally, also need to prove, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make the process, method, article or the equipment that comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.In the situation that not more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.

Above a kind of strain clamp provided by the present invention is described in detail, has applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand core concept of the present invention; Simultaneously,, for one of ordinary skill in the art,, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as the restriction to the application.

Claims (1)

1. a strain clamp, is characterized in that, comprising: strain clamp body, steel anchor and drainage tube;

Described strain clamp body, be a hollow tube, and the interior wedge of described hollow tube is oval; Run through and stretch into and with the steel anchor, form combination for the wire of transmission of electricity, to be fixed at described strain clamp body, and described strain clamp body is provided with drainage plate in select location, and described drainage plate has a jag jaws and a plurality of lockhole;

The steel anchor, be a latch form, its front end is one section hollow blind pipe, stage casing is one to have the solid part of a plurality of ring ribs, back segment is one can be connected in the hanging hole of insulator, and front end hollow blind pipe is inserted in and bestows the draw and clamping combination for the steel strand wire of wire inside, then the draw is bestowed at strain clamp body and the mutual coupling position of ring rib solid part again, make steel anchor and strain clamp body form clamping combination, the contracting of exerting pressure again of the tube wall position of wire and crimping and tension-resisting clip body;

Drainage tube, it is the hollow blind pipe that a head end is writing board shape, its head end has a flat board, back segment is a hollow blind pipe, on this flat board and be provided with lockhole, and lockhole is corresponding with the lockhole of drainage plate, makes the hollow blind pipe implantable in conjunction with a wire jumper, insert the jag jaws of drainage plate when the flat board of drainage tube head end, namely to lock to obtain good plant by bolt sealed for nationality.

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