CN211556798U - Novel sand-free environment-friendly OPGW strain clamp - Google Patents

Abstract

The utility model provides a novel OPGW strain clamp of sand-free glue environmental protection, including inlayer preformed armor rod and outer layer preformed armor rod, its characterized in that, outer layer preformed armor rod wholly adopts many silks structure side by side, including middle part bending part and both sides winding part, middle part bending part surface cladding aluminum plate, color pyrocondensation pipe parcel is adopted respectively at both sides winding part top, and terminal aluminium band that twines, the winding part includes little pitch section, well pitch section and big pitch section from the top to the end in proper order. The utility model provides a novel OPGW strain clamp of no sand glue environmental protection has good wire guide nature and high temperature operating characteristic, uses safe and reliable, simple to operate is swift, production process environmental protection is high-efficient.

Description

Novel sand-free environment-friendly OPGW strain clamp

Technical Field

The utility model belongs to the technical field of the preformed armor rods, concretely relates to novel OPGW strain clamp of no sand rubber environmental protection.

Background

The pre-twisted strain clamp is a strain clamp which is widely applied, is used for fixing the middle and the terminal of an overhead line conductor and an overhead optical cable, has the characteristics of high holding power, light weight, uniform stress distribution, good corrosion resistance, simple installation, strong universality and the like, and is widely applied to the conductor, the overhead composite ground wire OPGW, the overhead composite phase wire OPPC, the full-medium self-supporting overhead optical cable ADSS and other overhead optical cables.

The pre-twisted strain clamp is simple in structure and generally comprises a pre-twisted spiral strain pre-twisted wire and a matched connecting hardware fitting, wherein the matched connecting hardware fitting comprises a heart-shaped or U-shaped connecting ring, an extension rod or a hanging plate, a hanging ring and the like. The pre-twisted strain clamp can be divided into a single-layer pre-twisted strain clamp and a double-layer pre-twisted strain clamp according to the tension. For the single-layer pre-twisted strain clamp, the strain pre-twisted wire is folded to form a U-shaped elbow, the U-shaped elbow is sleeved on the connecting hardware fitting connecting ring, so that the strain clamp is connected with the tower, and the rest parts (two legs) of the pre-twisted wire are uniformly arranged to form hollow pipes. The inner diameter of the hollow tube formed by the two legs of the preformed armor rods is smaller than the outer diameter of the applicable wire/optical cable/stay wire, and when the hollow tube is wound on the wire or the overhead optical cable, a uniform compressive stress is generated on the contact surface of the hollow tube, and then the hollow tube is converted into a friction force, so that a strong tension force is generated. In addition, carborundum is often sprayed on the inner side of the preformed armor rod double-leg structure to increase the friction between the preformed armor rods and the conducting wire or the aerial optical cable. The double-layer pre-twisted strain clamp also comprises an inner-layer pre-twisted wire (also called a wire protecting strip pre-twisted wire). In order to avoid installation errors and facilitate quick installation, the inner-layer pre-twisted wire is often prefabricated into 2-4 sub-beams during processing, and each sub-beam is formed by bonding a plurality of spiral metal wires. The inner wall of the inner layer preformed armor rod is adhered with the particle carborundum, the friction force can be increased when the inner layer preformed armor rod is wound on the outer surface of a conducting wire or an overhead optical cable, the tension resistant preformed armor rod is wound on the outer surface of the inner layer preformed armor rod, the lateral pressure of the double-layer preformed armor rod clamp on the conducting wire or the optical cable can be reduced, and larger tension force is provided. The performance of the existing pre-twisted strain clamp is poor, and the existing pre-twisted strain clamp is not environment-friendly enough and can not meet the use requirement.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects and the defects of the prior art, the utility model aims to provide a novel OPGW strain clamp of no sand glue environmental protection that performance is better. The utility model discloses the technical scheme who adopts is:

the utility model provides a novel OPGW strain clamp of sand-free glue environmental protection, including inlayer preformed armor rod and outer layer preformed armor rod, its characterized in that, outer layer preformed armor rod wholly adopts many silks side by side structure, including middle part bending part and both sides winding part, middle part bending part surface cladding aluminum plate, color pyrocondensation pipe parcel is adopted respectively at both sides winding part top, and terminal aluminium band that twines, the winding part includes little pitch section, well pitch section and big pitch section from the top to the end in proper order.

As a priority of the technical scheme, the inner-layer strip preformed armor rods adopt a multi-wire side-by-side structure and are in a non-circular geometric shape as a whole.

The utility model provides a novel OPGW strain clamp without sand glue in environment protection, the outer layer preformed armor rods adopt a variable pitch structure, so that the whole holding section of the outer layer strip is uniform and reliable in holding force to the cable; the surface of the middle bending part is coated with an aluminum plate, so that the preformed armor rods are prevented from being directly contacted with the heart-shaped ring, the preformed armor rods are reliably protected, and the service life of the wire clamp is ensured; the color heat-shrinkable sleeve is used for color coding, corona prevention and strand scattering prevention; the aluminum armor tape ensures that the outer layer strips are not scattered, and simultaneously increases the contact surface with the inner layer strips and increases the friction force; the whole preformed armor rods of the inner layer strips are in a non-circular geometric shape, so that the contact surfaces of the inner layer strips, the cables and the outer layer strips are increased, and the friction coefficient between the inner layer strips and the cables and the outer layer strips is increased. The utility model provides a novel OPGW strain clamp of no sand glue environmental protection has good wire guide nature and high temperature operating characteristic, uses safe and reliable, simple to operate is swift, production process environmental protection is high-efficient.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of an inner layer strip pre-twisted wire of a novel sand-free environment-friendly OPGW strain clamp provided in an embodiment of the present invention;

fig. 2 is a schematic structural view of an outer layer strip pre-twisted wire of the sand-free environment-friendly novel OPGW strain clamp provided in the embodiment of the present invention;

fig. 3 is a schematic diagram of the state that the external layer of pre-twisted wire of the OPGW strain clamp is wrapped with aluminum tape in the sand-free environment-friendly new OPGW strain clamp provided in the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The utility model provides a novel OPGW strain clamp of no sand glue environmental protection, including inlayer strip preformed armor rod 1 and outer layer strip preformed armor rod 2, inlayer strip preformed armor rod 1 adopts many silks structure side by side, wholly is non-circular geometry. The outer layer pre-twisted wire integrally adopts a multi-wire side-by-side structure and comprises a middle bending part and two side winding parts, wherein the surface of the middle bending part is coated with an aluminum plate 2-1, the starting ends of the two side winding parts are respectively coated with a color heat-shrinkable tube 2-2, the tail end of the two side winding parts is coated with an aluminum wrapping tape 2-3, and the winding parts sequentially comprise a small-pitch section, a middle-pitch section and a large-pitch section from the starting ends to the tail ends.

The utility model provides a novel OPGW strain clamp without sand glue in environment protection, the outer layer preformed armor rods adopt a variable pitch structure, so that the whole holding section of the outer layer strip is uniform and reliable in holding force to the cable; the surface of the middle bending part is coated with an aluminum plate, so that the preformed armor rods are prevented from being directly contacted with the heart-shaped ring, the preformed armor rods are reliably protected, and the service life of the wire clamp is ensured; the color heat-shrinkable sleeve is used for color coding, corona prevention and strand scattering prevention; the aluminum armor tape ensures that the outer layer strips are not scattered, and simultaneously increases the contact surface with the inner layer strips and increases the friction force; the whole preformed armor rods of the inner layer strips are in a non-circular geometric shape, so that the contact surfaces of the inner layer strips, the cables and the outer layer strips are increased, and the friction coefficient between the inner layer strips and the cables and the outer layer strips is increased. The utility model provides a novel OPGW strain clamp of no sand glue environmental protection has good wire guide nature and high temperature operating characteristic, uses safe and reliable, simple to operate is swift, production process environmental protection is high-efficient.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (2)

1. The utility model provides a novel OPGW strain clamp of no sand-free rubber environmental protection, includes inlayer preformed armor rod and outer layer preformed armor rod, its characterized in that, outer layer preformed armor rod wholly adopts many silks side by side structure, including middle part bending part and both sides winding part, aluminum plate is covered to middle part bending part surface, color pyrocondensation pipe parcel is adopted respectively at both sides winding part top, and terminal aluminium band that twines, the winding part includes little pitch section, well pitch section and big pitch section from the top to the end in proper order.

2. The OPGW strain clamp as claimed in claim 1, wherein the inner layer pre-twisted wire is a multi-wire side-by-side structure, and the whole structure is in a non-circular geometric shape.

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