CN202003070U

CN202003070U - Pre-twisted strain clamp for overhead line ADSS optical cable

Info

Publication number: CN202003070U
Application number: CN2009201337341U
Authority: CN
Inventors: 万文惠
Original assignee: SHENZHEN SKYEE OPTICAL FIBER COMMUNICATION TECHNOLOGY Co Ltd
Current assignee: Sky, Shenzhen intelligence development net Science and Technology Ltd.
Priority date: 2009-07-10
Filing date: 2009-07-10
Publication date: 2011-10-05
Anticipated expiration: 2019-07-10

Abstract

The utility model relates to a pre-twisted strain clamp for an overhead line ADSS optical cable. A U-shaped hanging ring, a hanging board, a U-shaped connecting ring, preformed armor rods of external layer and preformed armor rods of internal layer suspend a cable in an overhead line. The pre-twisted strain clamp for an overhead line ADSS optical cable is characterized in that the preformed armor rods of the internal layer of the pre-twisted strain clamp for the ADSS optical cable is composed of high-molecular material resistant to electric mark, an armor rod of an internal layer comprises a plurality of preformed armor rods, each preformed armor rod comprises a plurality of monofilaments, the monofilaments are bonded together via high-molecular glue, and an inner side of the preformed armor rod is bonded with white corundum. The preformed armor rods of the internal layer composed of high-molecular material resistant to electric mark are cladded over the ADSS optical cable to avoid that friction between an end portion of a metal preformed armor rod and an nonmetal optical cable causes damage to a surface layer of the optical cable, and further avoids that when in a high-voltage line, metal pre-twisted end of the overhead electric power line generates corona and causes electrocorrosion damage to the nonmetal optical cable. The pre-twisted strain clamp increases contact area between the preformed armor rods and the optical cable, and protects the optical cable, with uniform distribution and no stress concentration.

Description

The preformed strain clamp of overhead transmission line ADSS optical cable

Technical field the utility model relates to the preformed strain clamp of overhead transmission line ADSS optical cable, and comparing with traditional wire clamp not only has contact area big, and unstressed the concentrating that be evenly distributed can well be protected optical cable; Install simply, characteristics such as easy construction, and adopt new material and technology, and can better protect optical cable with the optical cable coupling, expanded raw-material source of pre-twisted line hardware and processing technology.

The general preformed ADSS optical fiber cable fitting of background technology is made up of inside and outside two-layer strain insulator preformed armor rods, U type abutment ring and the web member of preformed curl, the strain insulator inner reeled silk is spiral-shaped through being processed into some bundles, directly be wound on the cable, work to strengthen the protection cable, the outer preformed armor rods of strain insulator is the spiral-shaped of semicircle or small semicircle through processing integral body, the middle part is through twist and warping, symmetry curves occiput can be installed on U type abutment ring the inside, remainder can strandedly arrive together, form hollow shape, be wound into above the inner reeled silk; Though traditional preformed wire clamp has increased the effect of having played protection ADSS optical cable with the contact area of optical cable; but because the internal layer hank knotting is made by metal materials such as aluminium Baogang or galvanized steels; the end of preformed armor rods is easy to be damaged to optical cable PE layer; the accidents such as broken string that cause easily of long duration; in addition in the above circuit ADSS of 220KV circuit because the corona phenomenon of inner reeled silk in highfield; optical cable is caused electrocorrosion, cause the broken string accident.

The preformed strain clamp of a kind of novel overhead transmission line ADSS optical cable of summary of the invention, by connections such as the capable link of U, link plate, U type abutment ring, outer preformed armor rods, internal layer preformed armor rodses optical cable is suspended in the overhead transmission line, it is characterized in that: the ADSS optical cable is made by the nonmetal macromolecular material of anti-electric trace with preformed strain clamp internal layer preformed armor rods, internal layer protects lines and is made up of some bundle preformed armor rodses, each bundle preformed armor rods is made up of some monofilament again, be bonded to together through macromolecule glue, and the preformed armor rods inboard is stained with white fused alumina.The internal layer preformed armor rods of being made by the anti-electric trace material of macromolecule is coated on the ADSS optical cable, by outer preformed armor rods, web member etc. ADSS is suspended on the power circuit, and the internal layer preformed armor rods is made spiral-shaped by preformed equipment.

The technical scheme that its technical matters that solves the utility model adopts is: internal layer protects the lines preformed armor rods and adopts polymer composite to make through injection moulding, owing to adopt with light and come outer similarly nonmetallic materials, can avoid the damage of metal material to ADSS optical cable PE layer, can under high electric field situation, not produce corona, corrosive attack between the different materials can not appear yet, and macromolecular material is easy to processing, price is lower, advantages such as starting material source abundance, not only solved preformed armor rods optical cable is damaged, also new raw material field has been opened up in developing.

The beneficial effects of the utility model are: avoid the damage of preformed armor rods end and non-metallic optical fiber cables rubbing contact to the optical cable top layer, avoid the overhead power line non-metallic optical fiber cables in high-voltage circuit, produce corona to optical cable electrocorrosion damage, broken string etc.It is big to increase preformed armor rods and optical cable contact area, and unstressed the concentrating that be evenly distributed, and plays the effect of protection optical cable, and easy construction is installed simply.

Description of drawings further specifies the utility model below in conjunction with accompanying drawing and example.

Fig. 1 is a product structure assembly drawing of the present utility model

Fig. 2 is an outer hank knotting structural representation of the present utility model

Fig. 3 is an interior strand layer silk structural representation of the present utility model

Fig. 4 is the single synoptic diagram of internal layer hank knotting

1. strain clamp internal layer preformed armor rods among Fig. 1, the 2. outer preformed armor rods of strain clamp, 3. U type abutment ring, 4. link plate, 5., 6. the U type is hung, 7. bolt, 8. optical cable.

Embodiment is in Fig. 1,4. U type link 5., 6. link to each other with link plate, 7. 3. be connected with U type abutment ring by bolt, by 3., 4., 5., 6. and 7. forming the web member part, and by U type link 6. directly and the anchor clamps on cement pole or the iron tower be connected; Outer preformed armor rods 2. symmetry curves occiput and can be installed on 3. the inside of U type abutment ring, the position, back is wound into above the internal layer preformed armor rods, 1. the internal layer preformed armor rods is made up of 3～4 bundles, directly be wound into above the optical cable, owing to adopted and the outer close anti-electric trace macromolecular material of optical cable, so can not cause damage to optical cable at the position that A, B two place's internal layer preformed armor rodses contact with optical cable, in high-voltage circuit, can not produce corona at this position, optical cable is caused electrocorrosion.

At the outer preformed armor rods of the strain clamp of Fig. 2, the strain clamp internal layer preformed armor rods of Fig. 3, all be some spiral-shaped monofilament to be bonded together with water-soluble high-molecular material, and be stained with one deck white fused alumina in the inboard, friction force when being used to increase preformed armor rods and contacting with optical cable guarantees that preformed armor rods has enough grips to optical cable.

Claims

1. preformed strain clamp of overhead transmission line ADSS optical cable, by connections such as U type link, link plate, U type abutment ring, outer preformed armor rods, internal layer preformed armor rodses optical cable is suspended in the overhead transmission line, it is characterized in that: the internal layer preformed armor rods of being made by the anti-electric trace material of macromolecule is coated on the ADSS optical cable and by outer preformed armor rods, web member etc. ADSS is suspended on the power circuit, and the internal layer preformed armor rods is made spiral-shaped by preformed equipment.

2. according to the preformed strain clamp of right 1 described ADSS optical cable, it is characterized in that: the ADSS optical cable is made by the nonmetallic materials of anti-electric trace with preformed strain clamp internal layer preformed armor rods, internal layer protects lines and is made up of some bundle preformed armor rodses, each bundle preformed armor rods is made up of some monofilament again, be bonded to together through macromolecule glue, and the preformed armor rods inboard is stained with white fused alumina.