CN202602212U

CN202602212U - Outer layer reinforced pre-twisted type strain clamp

Info

Publication number: CN202602212U
Application number: CN 201220251695
Authority: CN
Inventors: 张继育; 杨更才; 林轶; 苏蔚潇
Original assignee: BEIJING GENERAL FITTING Co Ltd
Current assignee: LIAONING HAIAO SCIENCE & TECHNOLOGY CO., LTD.
Priority date: 2012-05-31
Filing date: 2012-05-31
Publication date: 2012-12-12
Anticipated expiration: 2022-05-31

Abstract

The utility model discloses an outer layer reinforced pre-twisted type strain clamp which comprises a pre-twisted wire bearing clamp 1, a pre-twisted wire auxiliary clamp 2, an outer layer reinforced strip 3 and a connecting ring 4. The pre-twisted wire bearing clamp 1 and the pre-twisted wire auxiliary clamp 2 are both fixed in a splicing mode by a plurality of metal wires which are preformed in a shape of a helix, and are formed in a symmetrical U shape. The U-shaped bottoms of the two clamps are hinged in a tubular shape, and continuous stretching parts of the U-shaped bottoms of the two clamps are of a two-leg structure which keeps a spiral shape. The U-shaped bottoms of the two clamps are perpendicular to each other and are connected to a rod and a tower through the connecting ring 4. And the outer layer reinforced strip 3 is wound outside the pre-twisted wire bearing clamp 1 and the pre-twisted wire auxiliary clamp 2. The two-leg structure of a pre-twisted wire and the outer layer reinforced structure distribute stress borne by a wire evenly on a whole mounting area which is then free of a stress concentration point, and accordingly fatigue damage at the stress concentration point during long time operation of the wire is avoided. The outer layer reinforced pre-twisted type strain clamp transmits temperature rise of the wire to the pre-twisted wire, and therefore joint heat dissipation is achieved, and safety in use of the whole strain clamp is guaranteed.

Description

Outer reinforced preformed strain clamp

Technical field

The utility model relates to the outer reinforced preformed strain clamp of using on a kind of aerial condutor.

Background technology

At present, use preformed strain clamp on the overhead power line more and more.Existing preformed strain clamp, in the time of on being installed to the lead of sectional area more than 300 square millimeters, the hypodynamic problem of often holding with a firm grip, and have the bigger problem of temperature rise, therefore there is serious potential safety hazard.How to guarantee that preformed strain clamp twisted pair wire has enough grip forces, and efficiently radiates heat, technical staff's problem anxious to be solved in the industry become.

The utility model content

To the problem that prior art exists, the utility model provides a kind of skin reinforced preformed strain clamp, and is easy for installation, and grip force is high, and thermal diffusivity is good.

For reaching above-mentioned purpose, the utility model provides a kind of skin reinforced preformed strain clamp.The reinforced preformed strain clamp of this skin is made up of preformed armor rods load wire clamp, the auxiliary wire clamp of preformed armor rods, outer stiffener and connecting ring.The auxiliary wire clamp of preformed armor rods load wire clamp and preformed armor rods is prefabricated into spiral helicine wire by some and is adhesively fixed, and processes the U-shaped of symmetry.The spiral metal wire of U-shaped bottom is twisted into the tubulose thinner than original spiral, and it is to keep original spiral-shaped both legs structure that the extension is continued in the U-shaped bottom.Two wire clamp U-shapeds bottom is vertically passed the mounting groove and the installing hole of connecting ring each other respectively, is connected to bar, tower, and the both legs space of two wire clamps is wound on the lead.Outer stiffener is made up of some helical metal wires; Spiral-shaped ratio two wire clamps of outer stiffener are big; Wire is divided into three to four groups, and every group of interior wire is adhesively fixed, and outer stiffener is wound into the outside of preformed armor rods load wire clamp and the auxiliary wire clamp of preformed armor rods.

Further, the reinforced preformed strain clamp of said skin, preformed armor rods load wire clamp wherein is the aluminum cald steel wire material, and the auxiliary wire clamp of preformed armor rods is the aluminum-alloy wire material, and outer stiffener is aluminum cald steel wire or aluminum-alloy wire material.

Further, the reinforced preformed strain clamp of described skin, the inner surface of its preformed armor rods load wire clamp, the auxiliary wire clamp of preformed armor rods and outer stiffener all is stained with one deck sand.

Further, the reinforced preformed strain clamp of described skin, its connecting ring material is the hot galvanizing foundry goods.

The utility model beneficial effect is following:

The outer reinforced preformed strain clamp of the utility model embodiment is evenly distributed on the whole erection length the grip force of lead, does not have stress to concentrate; Be wrapped in preformed armor rods on the lead and effectively strengthened the rigidity of lead, can strengthen its anti-fatigue performance, effectively avoid lead because stress is concentrated the fatigue rupture that causes.The design of the preformed armor rods wire clamp of two groups of unlike materials has promptly guaranteed the grip force of wire clamp to lead, can guarantee again well heat outwards to be conducted.Outer stiffener had both increased the grip force of wire clamp to lead, had increased area of dissipation again, helped wire clamp place lead efficiently radiates heat.The preformed armor rods structure of reinforced preformed strain clamp, installation process need not specific purpose tool, and fitting operation is simple and efficient; Installation quality is easy to guarantee that consistency is strong, need not specialized training that simple appearance is attractive in appearance.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the preformed armor rods load wire clamp structural representation shown in the sequence number 1 among Fig. 1.

Fig. 3 is the preformed armor rods boost line clamping structure sketch map shown in the sequence number 2 among Fig. 1.

Fig. 4 is the structural representation of the outer stiffener shown in the sequence number 3 among Fig. 1.

Fig. 5 is the front view of the connecting ring shown in the sequence number 4 among Fig. 1.

Fig. 6 is the vertical view of connecting ring.

Fig. 7 is the utility model user mode sketch map.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further elaborated.

The outer reinforced preformed strain clamp that the utility model relates to is a kind of strain clamp that sectional area surpasses 300 square millimeters lead that is used for; Bear whole tension force of lead; Make lead stressed more even, effectively avoid the fatigue rupture of lead, and help the lead efficiently radiates heat at the wire clamp place.

Outer reinforced preformed strain clamp as shown in Figure 1, that the utility model relates to is made up of preformed armor rods load wire clamp 1, the auxiliary wire clamp 2 of preformed armor rods, outer stiffener 3 and connecting ring 4.

Like Fig. 2, shown in Figure 3, preformed armor rods load wire clamp 1 is prefabricated into spiral helicine wire with the auxiliary wire clamp 2 of preformed armor rods by some and is adhesively fixed, and processes the U-shaped of symmetry.The spiral metal wire of U-shaped bottom 21 parts and 31 parts is twisted into the tubulose thinner than original spiral, and it is to keep original spiral-shaped both legs structure 22 parts and 32 parts that the extension is continued in the U-shaped bottom.

Like Fig. 5, shown in Figure 6, connecting ring is designed with mounting groove 61 and installing hole 51.

The U-shaped of preformed load wire clamp 1 bottom 21 parts are passed the mounting groove 61 of connecting ring 4, and it is vertical each other with 31 parts that U-shaped bottom 31 parts of preformed auxiliary wire clamp 2 are passed installing

hole

51,21 parts of connecting ring 4.Connecting ring 4 is connected to bar, tower, and both legs structure 22 parts and the 32 part spaces of two wire clamps are wound on the lead 5.

As shown in Figure 4, outer stiffener 4 is made up of some helical metal wires, outer stiffener 4 spiral-shaped bigger with preformed auxiliary wire clamp 2 than preformed load wire clamp 1.Wire is divided into three to four groups, and every group of interior wire is adhesively fixed, and outer stiffener 4 is wound into the outside of preformed armor rods load wire clamp 1 and the auxiliary wire clamp 2 of preformed armor rods.

The outer reinforced preformed strain clamp that installs is shown in accompanying drawing 7.

The real outer reinforced preformed strain clamp of the utility model is evenly distributed on the whole erection length the grip force of lead, does not have stress to concentrate, and effectively avoids lead because stress is concentrated the fatigue rupture that causes; Be wrapped in preformed armor rods on the lead and effectively strengthened the rigidity of lead, can strengthen its anti-fatigue performance.The preformed armor rods wire clamp of two groups of unlike materials and the design of outer stiffener have promptly guaranteed the grip force of wire clamp to lead, can guarantee again well heat outwards to be conducted.The preformed armor rods structure of reinforced preformed strain clamp, installation process need not specific purpose tool, and fitting operation is simple and efficient; Installation quality is easy to guarantee that consistency is strong that simple appearance is attractive in appearance.

Claims

1. the reinforced preformed strain clamp of skin is characterized in that, the reinforced preformed strain clamp of this skin is made up of preformed armor rods load wire clamp, the auxiliary wire clamp of preformed armor rods, outer stiffener and connecting ring.The auxiliary wire clamp of preformed armor rods load wire clamp and preformed armor rods is prefabricated into spiral helicine wire by some and is adhesively fixed, and processes the U-shaped of symmetry.The spiral metal wire of U-shaped bottom is twisted into the tubulose thinner than original spiral, and it is to keep original spiral-shaped both legs structure that the extension is continued in the U-shaped bottom; Two wire clamp U-shapeds bottom is vertically passed the mounting groove and the installing hole of connecting ring each other respectively, is connected to bar, tower, and the both legs space of two wire clamps is wound on the lead; Outer stiffener is made up of some helical metal wires; Spiral-shaped ratio two wire clamps of outer stiffener are big; Wire is divided into three to four groups, and every group of interior wire is adhesively fixed, and outer stiffener is wound into the outside of preformed armor rods load wire clamp and the auxiliary wire clamp of preformed armor rods.

2. the reinforced preformed strain clamp of skin as claimed in claim 1 is characterized in that preformed armor rods load wire clamp is the aluminum cald steel wire material, and the auxiliary wire clamp of preformed armor rods is the aluminum-alloy wire material, and outer stiffener is aluminum cald steel wire or aluminum-alloy wire material.

3. the reinforced preformed strain clamp of skin as claimed in claim 1 is characterized in that, the inner surface of preformed armor rods load wire clamp, the auxiliary wire clamp of preformed armor rods and outer stiffener all is stained with one deck sand.

4. the reinforced preformed strain clamp of skin as claimed in claim 1 is characterized in that the connecting ring material is the hot galvanizing foundry goods.