CN201004543Y

CN201004543Y - Pre-twisted damper

Info

Publication number: CN201004543Y
Application number: CN 200620172875
Authority: CN
Inventors: 王旭锋; 冯学斌
Original assignee: BEIJING ELECTRIC POWER CONSTRUCTION RESEARCH INSTITUTE OF SGCC
Current assignee: China Electric Power Research Institute Co Ltd CEPRI
Priority date: 2006-12-30
Filing date: 2006-12-30
Publication date: 2008-01-09
Anticipated expiration: 2016-12-30

Abstract

The utility model relates to a pre-twisting type buffering, which has a buffering line, wherein the buffering line is at least provided with a line clamp at two ends, and one end of the line clamp is connected and pressed with the buffering line into an integrated part, whereas the other end is formed a V-shaped blocking and combining part that is matched with the cable and provided with a V-shaped slot. And a plurality of pre-twisting threads are passed through the V-shaped slot and also winded and connected with the cable. The pre-twisting buffering of the utility model connects the buffering lines with the electricity transmission cables through the pre-twisting threads, so as to flexibly connect the buffering lines with the electricity transmission cables and overcome the known technical defects as well as promote the service life and the safety performance of the cable, reduce the part and component numbers, and facilitate the construction, as well as improve the working efficiency. Thus, the utility model can be used in electricity transmission circuit large-span leads, ground lines and OPGW of different voltages with wide application prospect and obvious social and economic benefits.

Description

Preformed damper

Technical field

The utility model relates to a kind of damper that is used for overhead transmission line, and especially a kind of transmission line that can suppress constitutes holistic preformed damper owing to extraneous factor produces vibration, wire clamp and damping wire.

Background technology

The big leap of overhead transmission line, because hanging point height over the ground, span is big, aeolian vibration is very serious, and problems such as the abrasion of existence generation cable fatigue fracture and anchor clamps and breakage are for addressing this problem, need on transmission line, to install damper, to suppress the aeolian vibration of aerial cable.

At present, damping wire being connected with lead, ground wire (OPGW) by chuck is the measure commonly used of lead, ground wire (OPGW) being carried out vibrationproof in the big overhead crossing engineering of transmission line.Wherein, damping wire and lead, ground wire (OPGW) retained part adopt cast aluminium or cast aluminium alloy chuck more, chuck weight is bigger, and by chuck is fixedlyed connected with cable (lead, ground wire (OPGW)), thereby damping wire and cable formation are rigidly connected, therefore cause stress to concentrate and the cable damage easily.In addition, because known damper is made of in conjunction with a plurality of chucks a damping wire, need carry out the assembling of a plurality of parts at the scene, therefore construction is complicated, difficult, and, be to adopt bolt to be connected between each chuck and damping wire and the cable, thereby cause the damper overall weight bigger.

Summary of the invention

The technical problems to be solved in the utility model is: the preformed damper that provides a kind of wire clamp and damping wire to constitute an integral body, be connected with cable by preformed armor rods.

For this reason, a kind of preformed damper of the present utility model, wherein, this preformed damper has a damping wire, and described damping wire two ends at least is respectively equipped with a wire clamp, and an end of this wire clamp and described damping wire crimping are integral, the other end of described wire clamp forms a V-type holding section of matching with cable, described V-type holding section is provided with a V-type groove, and the multiply preformed armor rods runs through described V-type groove, and described preformed armor rods is intertwined and connected in described cable.

Aforesaid preformed damper, wherein, the V-type groove of described wire clamp is positioned at the bottom of described V-type holding section, and the opening direction of this V-type groove is identical with the opening direction of V-type holding section.

Aforesaid preformed damper, wherein, the middle part of described damping wire is fixed with wire clamp.

Aforesaid preformed damper wherein, is fixed with a plurality of wire clamps on the described damping wire.

Aforesaid preformed damper, wherein, described wire clamp is the wire clamp that is made of aluminium alloy or aluminium.

Characteristics of the present utility model and advantage are:

Preformed damper of the present utility model, by preformed armor rods damping wire is connected with the transmission of electricity cable, thereby realized flexibly connecting between damping wire and the transmission of electricity cable, overcome in the known technology and damping wire and transmission of electricity cable have been rigidly connected the defective that easily causes stress to concentrate by cast aluminium or cast aluminium alloy chuck.

Owing to adopt preformed armor rods to be connected, for flexibly connecting, therefore reduced damage, the useful life and the fail safe that have improved cable between described damping wire and cable to cable with the transmission of electricity cable.

Preformed damper of the present utility model because wire clamp and damping wire constitute an integral body, has reduced amount of parts than known technology, is convenient to construction, has improved operating efficiency.

Preformed damper of the present utility model is suitable for and carries out the standardization of products and seriation, can carry out application on the big leap lead of various electric pressure transmission lines, ground wire and OPGW, has broad application prospects and the significant social economic benefit.

Description of drawings

Fig. 1 is the cross-sectional schematic of preformed damper of the present utility model;

Fig. 2 is the user mode schematic diagram one of preformed damper of the present utility model;

Fig. 3 is the user mode schematic diagram two of preformed damper of the present utility model.

Embodiment

For having clear more to feature, the effect of the preformed damper of utility model and the technical purpose that will reach and comprehensively understanding, now contrast description of drawings embodiment of the present utility model.

Fig. 1 is the cross-sectional view of the preformed damper that the utility model proposes; Fig. 2 is the user mode schematic diagram one that preformed damper of the present utility model is connected with the transmission of electricity cable; Fig. 3 is the user mode schematic diagram two that preformed damper of the present utility model is connected with the transmission of electricity cable.

Shown in Fig. 1～3, the preformed damper 1 that the utility model proposes, has a damping wire 14, described damping wire 14 two ends at least is respectively equipped with a wire clamp 12, and this wire clamp 12 is an overall structure, and one end and described damping wire 14 constitute one by crimping, the other end of described wire clamp 12 forms a V-type holding section 13 of matching with cable, described V-type holding section 13 is provided with a V-type groove 15, and multiply preformed armor rods 11 runs through described V-type groove 15, and described preformed armor rods 11 is intertwined and connected in described cable 2.

The wire clamp 12 of preformed damper 1 of the present utility model forms a ring part 16 with the link of described damping wire 14, and described damping wire 14 runs through this ring part 16, makes the ring part 16 of wire clamp 12 and described damping wire 14 constitute as a whole by crimping.

The V-type groove 15 that is provided with on the described wire clamp 12 is positioned at the bottom of described V-type holding section 13, and the opening of this V-type groove 15 is identical with the opening direction of V-type holding section 13.

During use, according to the required length requirement that damper is set of transmission of electricity cable, select only to be provided with the damper (as shown in Figure 2) of wire clamp 12 at damping wire 14 two ends, or increase the damper (as shown in Figure 3) that a wire clamp 12 is set at the middle part of damping wire 14, or in the middle of damping wire 14, increase the damper (not shown) that a plurality of wire clamps 12 are set; After preformed armor rods 11 passed described V-type groove 15, be wound in described transmission of electricity cable 2, flexibly connect thereby damper 1 of the present utility model constituted with transmission of electricity cable 2.Therefore reduced damage, the useful life and the fail safe that have improved cable 2 to cable.In addition,, reduced amount of parts, be convenient to construction, improved operating efficiency than known technology because described wire clamp 12 constitutes an integral body with damping wire 14.

Wire clamp 12 of the present utility model can adopt aluminium alloy or aluminium to constitute, thereby has alleviated the weight of wire clamp 12.The utility model has changed known damper connected mode, adopt the wire clamp 12 that weight is light, one constitutes, by preformed armor rods 11 damping wire 14 and transmission of electricity cable 2 formations are flexibly connected, overcome the chuck and the cable junction that exist in the known technology and produced the defective that stress is concentrated.

The above person of thought, it only is embodiment of the present utility model, when can not limiting the scope that the utility model is implemented with this, i.e. equivalent variations and the modification of being done according to the utility model content generally all should still belong within the scope that the utility model patent claims contain.

Claims

1, a kind of preformed damper, it is characterized in that: this preformed damper has a damping wire, described damping wire two ends at least is respectively equipped with a wire clamp, and an end of this wire clamp and described damping wire crimping are integral, the other end of described wire clamp forms a V-type holding section of matching with cable, described V-type holding section is provided with a V-type groove, and the multiply preformed armor rods runs through described V-type groove, and described preformed armor rods is intertwined and connected in described cable.

2, preformed damper as claimed in claim 1, it is characterized in that: the V-type groove of described wire clamp is positioned at the bottom of described V-type holding section, and the opening direction of this V-type groove is identical with the opening direction of V-type holding section.

3, preformed damper as claimed in claim 1, it is characterized in that: the middle part of described damping wire is fixed with wire clamp.

4, preformed damper as claimed in claim 1 is characterized in that: be fixed with a plurality of wire clamps on the described damping wire.

5, as each described preformed damper of claim 1 to 4, it is characterized in that: described wire clamp is the wire clamp that is made of aluminium alloy or aluminium.