CN203800203U - Pre-twisted jumper wire drainage hardware fitting - Google Patents

Abstract

A pre-twisted jumper drainage fitting, including a fluid, a pre-twisted tightening strip and a clamp, the upper and lower ends of the fluid are respectively provided with arc-shaped grooves, and the fluid passes through the groove at the upper end and the leading wire in the overhead transmission line. It is connected with the drain wire in the overhead transmission line through the groove at the lower end, and the pre-twisted tightening strip is wound on the outside of the combination of fluid, main wire and drain wire and fixed by a clamp. The utility model has the advantages of simple structure and low cost. In the construction of power transmission lines and traction setting-out, it is suitable for the connection between the ordinary tension clamp and the main conductor. The line passes through the pulley, and the line can be hung directly after the line is unwound. This structural form can avoid multiple crimping of the traction head and the drainage clamp, reduce the loss of the wire and the traction head or the net sleeve, reduce the difficulty of construction, and improve the construction efficiency.

Description

A pre-twisted jumper drainage fitting

technical field

The utility model relates to a wire jumper drainage fitting for wire erection construction and transmission lines, in particular to a pre-twisted wire jumper drainage fitting which plays the role of connection and overcurrent between a main wire and a drainage wire.

Background technique

In the traditional traction and setting-out construction of overhead conductors, a special pulling head or a wire mesh sleeve is used to pull the wires. After passing through multiple sets of pay-off tackles, after reaching the terminal of the tension section, the pulling head or a section of wires are cut off, and then the tension line is carried out. After the clip is crimped with the main wire, hang the wire, and after the drain wire is crimped with the drain wire clip, it is tightly connected with the drain plate bolt on the tension wire clip.

The diversion plate on the strain clamp is shaped like a wing. When paying off, a special traction head or a wire mesh sleeve must be used to pull the wire through the tackle. Multiple crimping operations must be performed on wire clips, which will also cause loss of traction heads, net sleeves, and wires, and the installation position of the drain wire clip cannot be adjusted.

In addition, in the overhead wire transmission line, the connection between the strain clamp and the drainage clamp is a bolt connection, and the drainage clamp and the drainage wire also have the problems of multiple crimping and the installation position of the drainage clamp cannot be adjusted.

Utility model content

Aiming at the defects existing in the prior art, the utility model provides a pre-twisted wire jumper drainage fitting, which can directly pull the main wire through a pulley and pay off by using a tension clamp.

The specific technical solution is: a pre-twisted jumper drainage fitting, including a fluid, a pre-twisted tightening strip and a clamp, the upper and lower ends of the fluid are respectively provided with arc-shaped grooves, and the fluid passes through the upper groove and the The main conductor in the overhead transmission line is connected to the drain wire in the overhead transmission line through the groove at the lower end, and the pre-twisted tightening strip is wound on the outside of the combination of fluid, main conductor and drain wire and fixed by a clamp.

The middle part of the pre-twisted tightening strip is wound on the outside of the combination of the fluid, the main wire and the drain wire, and its two ends are wound on the main wire or the drain wire and fixed by a small clamp.

The pre-twisted tightening strips are aluminum alloy wires or aluminum-clad steel wires.

The material used for the fluid is aluminum.

The utility model has the advantages of simple structure, low manufacturing cost, and adopts pre-twisted wire to hold the "conductor-over-fluid-conductor", which has the characteristics of stress dispersion, no damage to the twisted wire, good electrical conductivity, and simple installation and disassembly, which can be fast and convenient It is easy to install manually on site, the installation quality is easy to guarantee, and the naked eye can be inspected; in the construction of power transmission lines and traction setting out, it is suitable for ordinary tension clamps to connect with the main conductor, and the tension clamps do not need to have drainage plates and drainage The wire clamp can directly pull the main wire over the block, and can directly hang the wire after paying off. This structural form can avoid multiple crimping of the traction head and the drainage clamp, reduce the loss of the wire and the traction head or the net sleeve, reduce the difficulty of construction, and improve the construction efficiency.

Description of drawings

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

Fig. 2 is A-A direction sectional view in Fig. 1;

Fig. 3 is a schematic diagram of the fluid structure in the utility model;

Fig. 4 is a schematic diagram of the structure of the utility model in use.

Detailed ways

As shown in Fig. 1, Fig. 2 and Fig. 3, a pre-twisted jumper drainage fitting includes a fluid 1, a pre-twisted tightening strip 2 and a clamp 3, the clamp 3 is an ordinary clamp, and the fluid 1 The upper and lower end faces are respectively provided with arc-shaped grooves 4 and grooves 5. The fluid 1 is connected to the main conductor 6 in the overhead power transmission line through the groove 4 at the upper end. The radius of the circle where the arc of the arc-shaped groove 4 is located is the same as The radius of the main conductor 6 is the same, so that the cooperation between the fluid 1 and the main conductor 6 is tighter; the fluid 1 is connected to the drain wire 7 in the overhead transmission line through the groove 5 at the lower end, and the arc of the arc-shaped groove 5 is located The radius of the circle is the same as the radius of the drain wire 7, so that the cooperation between the fluid 1 and the drain wire 7 is tighter; It is fixed by clamp 3, and its two ends are wound on the main wire 6 or drain wire 7 and fixed by a small clamp 9, so that the connection between the fluid 1, the main wire 6 and the drain wire 7 is more tightened.

As shown in Figure 4, after the end of the main wire 6 is connected to the tension clamp 8 without a drainage plate, the main wire 6 can be directly pulled over the trolley to pay off the wire, and the wire can be directly hung after the wire is unwound, according to the actual situation on site Multi-stage fluid 1 can be used for connection.

The pre-twisted tightening strip 2 is aluminum alloy wire or aluminum-clad steel wire, which has a certain softness and good electrical conductivity. Before use, the pre-twisted tightening strip 2 is prefabricated into a spiral structure, and the spiral structure The longitudinal section of the hollow part is hemispherical or duckbill-shaped, which reduces the internal stress caused by deformation during use and makes it easier for the pulley of the block to pass through.

The material used for the fluid 1 is aluminum, which is lighter in weight and has better conductivity, so that the current on the main wire 6 flows into the drain wire 7 .

Claims (4)

1. a preformed wire jumper drainage gold utensil, it is characterized in that: comprised fluid, preformed deflation bar and clip, cross fluid upper and lower end face and be respectively arranged with circular groove, crossing fluid is connected with the main traverse line in overhead transmission line by the groove of upper end, groove by lower end is connected with the drainage thread in overhead transmission line, and preformed deflation bar was wrapped in the outside of fluid, main traverse line and drainage thread assembly and was fixed by clip.

2. the preformed wire jumper drainage of one as claimed in claim 1 gold utensil, it is characterized in that: described preformed deflation bar intermediate portion was wrapped in the outside of fluid, main traverse line and drainage thread assembly, and its two ends are wrapped on main traverse line or drainage thread and by little clip and fix.

3. the preformed wire jumper drainage of one as claimed in claim 1 or 2 gold utensil, is characterized in that: described preformed deflation bar is aluminum-alloy wire or aluminum cald steel wire.

4. the preformed wire jumper drainage of one as claimed in claim 1 gold utensil, is characterized in that: described fluid material therefor is excessively aluminium.