CN201054482Y

CN201054482Y - Stretch resisting cable clamper

Info

Publication number: CN201054482Y
Application number: CNU2007200379757U
Authority: CN
Inventors: 余鸿文
Original assignee: NANJING RUNDIAN ELECTRIC CO Ltd
Current assignee: NANJING RUNDIAN ELECTRIC CO Ltd
Priority date: 2007-05-23
Filing date: 2007-05-23
Publication date: 2008-04-30
Anticipated expiration: 2017-05-23

Abstract

The utility model discloses a strain clamp which comprises a tension handle, an external layer sleeve, a clamping head sleeve, a clamping head and an internal layer sleeve. The internal layer sleeve the middle of which is provided with a carbon fiber core aluminum stranded conductor is extended to the front end of the external layer sleeve, and an internal hole has a taper hole on one end and the clamping head sleeve having an internal thread on the other end is positioned in the external layer sleeve. The outer edge of the clamping head is of a cone shape matched with the internal hole of clamping head sleeve, and the wall is provided with bar-shaped openings with single end closed, and the closed ends of the two neighboring bar-shaped openings are respectively positioned on the two ends of the clamping head. The tension handle is extended to the back end of the external layer sleeve, and the extending end is provided with an external thread matched with the internal thread, and the top is provided with a finial for closely supporting the clamping head. The utility model can firmly clamp the carbon fiber core of the aluminum stranded conductor with carbon fiber core through screwing in the clamping head of the tension handle. The utility model uses the fixed connection similar to anchor and has reliable connection and improved intensity, moreover, after connecting, the strain clamp and the conductor have good contact, thus, the contact area is increased and the conductivity is improved.

Description

Strain clamp

One, technical field

The utility model relates to the gold utensil on a kind of lead that is used for the overhead power line transmission line, particularly a kind of strain clamp.

Two, background technology

The most of steel reinforced aluminium conductor that adopts of lead in the historical transmission line, can be nearest 2 years, the lead that has occurred New Type Material and employing novel process in this field, wherein on material, there are the carbon fiber of employing and glass fibers synthetic material, invar to replace traditional steel core, the material of aluminium stranded conductor also changes, the soft aluminium material of the employing that has; On technology, the monofilament of aluminium hank knotting is changed over covering of the fan.

A kind of novel aluminum twisted wire that ACCC (carbon fiber core aluminium stranded conductor) (Aluminum conductor Composite core) is made up of carbon fiber core and aluminium hank knotting, wherein the aluminium hank knotting no longer is traditional cylinder, its cross section is to be covering of the fan, and some places claim that again this lead is the covering of the fan lead.This conductor structure is tight, because composite material does not possess magnetic substance loss and heat loss, lead has lower operating temperature, so it can reduce transmission loss 6%, maximum benefit is that its transmission line capability under same units length weight situation increases by 1 ~ 1.5 times, so just can not need to increase transmission line capability again solution is provided for geographical environment influence in the urban construction does not allow to change shaft tower, but for this lead, because the change of structure, existing gold utensil can not satisfy its needs, strain clamp particularly, a large amount of now use be still screw bolt-type, it can not satisfy the instructions for use of novel carbon fiber core aluminum stranded wire.

Three, utility model content

The purpose of this utility model is to provide a kind of and connect reliable, easy to use and can satisfy the strain clamp of novel carbon fiber core aluminum stranded wire needs in order to solve the prior art problem.

In order to realize above-mentioned technical purpose, a kind of strain clamp described in the utility model, comprise pulling force handle, outer layer sleeve, chuck sleeve pipe, be used for clamping the chuck and the inner layer sleeve of carbon fiber core aluminium stranded conductor carbon fiber core, has locator protrusions on the described outer layer sleeve inwall, the inner layer sleeve that the centre is installed with the carbon fiber core aluminium stranded conductor stretches in the outer layer sleeve front end, and the end face of this inner layer sleeve inserting end contacts with locator protrusions and locatees; One end of endoporus is installed in the outer layer sleeve for the chuck sleeve pipe that the taper hole other end is provided with internal thread, the chuck outer rim is the taper shape that is complementary with chuck cover pipe orifice, have the strip gab of single-ended sealing on its wall, and two adjacent strip gab blind ends are respectively at the two ends of chuck, the pulling force handle stretches into the rear end of outer layer sleeve, this inserting end is provided with the external screw thread that matches with internal thread on the chuck sleeve pipe, its top is provided with and holds out against the top of chuck, thus by precession pulling force handle hold out against chuck firm clamp carbon fiber core in the carbon fiber core aluminium stranded conductor.

Strip gab can be crosswise and be symmetrically distributed, and only needs this moment four openings just can guarantee the reliability that connects.

In order to make connection more firm, the outer fringe surface behind pulling force handle external screw thread is provided with the annular groove that multiple tracks is used to improve the crimping reliability.Can adopt the crimping mode as second kind of type of attachment like this between pulling force handle and outer layer sleeve.

Because new A CCC (carbon fiber core aluminium stranded conductor) lead has adopted special substance and technology, so the design of gold utensil is also different with traditional gold utensil, the parts that ACCC bears pulling force are middle carbon fiber cores, and as the ACCC of 240/30 line footpath size, carbon fiber core wherein probably can bear the pulling force of 80KN.The parts of the electric energy transmitting of ACCC are the aluminium wires outside carbon fiber core, and its material is made by soft aluminium, can not bear pulling force, so the installation method of gold utensil is just very different with traditional method.The steel core of conventional wires is by distortion is connected with steel strand wire hydraulic pressure gold utensil, and the carbon fiber core of ACCC is very thin, it can bear very big pulling force simultaneously, can not be but will fix carbon fiber by simple crimping, because at first the material of gold utensil and carbon fiber is different, secondly, if the carbon fiber core distortion can influence pulling force characteristic, and the position of the utility model most critical is to have adopted the carbon fiber chuck of two similar setscrews and chuck sleeve pipe to form, lead is installed, at first to peel the aluminum steel of ACCC off, expose carbon fiber core, at first penetrate inner layer sleeve, again inner layer sleeve is inserted in the outer layer sleeve, expose carbon fiber core and put into chuck, be inserted in chuck in the chuck sleeve pipe again and put into outer layer sleeve, insert the pulling force handle at last in the outer layer sleeve rear end and tighten, under the roof pressure of pulling force handle, thereby chuck is extruded in the taper hole of chuck sleeve pipe and compresses carbon fiber core, finishes being connected of gold utensil and carbon fiber core.

The utility model is compared with traditional strain clamp, the connection needs that adapted to the novel carbon fiber core aluminum stranded wire, it is just passable that existing product only requires that the crimp strength of aluminium wire and gold utensil can reach the intensity of good conduction, only adopt the mode that compresses in the connection, rely on fully when compressing and keep both connection with the frictional force that aluminum steel produces after the aluminium distortion, the utility model then utilizes the fixed form of similar setscrew to connect, connect reliable, intensity also improves greatly, and connect between back strain clamp and lead and contact well, contact area increases, and has improved conductance.

Four, description of drawings

Fig. 1 is an installation diagram of the present utility model;

Fig. 2 is the part drawing of pulling force handle among Fig. 1;

Fig. 3 is the vertical view of Fig. 2;

Fig. 4 is the right view of Fig. 2;

Fig. 5 is the part drawing of Fig. 1 ectomesoderm sleeve pipe;

Fig. 6 is the left view of Fig. 5;

Fig. 7 is the part drawing of chuck sleeve pipe among Fig. 1;

Fig. 8 is the left view of Fig. 7;

Fig. 9 is the part drawing of chuck among Fig. 1;

Figure 10 is the vertical view of Fig. 9;

Figure 11 is the left view of Fig. 9;

Figure 12 is the right view of Figure 10;

Figure 13 is the part drawing of inner layer sleeve among Fig. 1.

Five, embodiment

As Fig. 1-shown in Figure 13, strain clamp described in the utility model, it comprises pulling force handle 1, outer layer sleeve 2, chuck sleeve pipe 3, is used for clamping the chuck 4 and the inner layer sleeve 5 of carbon fiber core aluminium stranded conductor 10 carbon fiber cores 11, has locator protrusions 6 on outer layer sleeve 2 inwalls, the inner layer sleeve 5 that the centre is installed with the carbon fiber core aluminium stranded conductor stretches in outer layer sleeve 2 front ends, and the end face of these inner layer sleeve 5 inserting ends contacts with locator protrusions 6 and locatees; One end of endoporus is installed in the outer layer sleeve 2 for the chuck sleeve pipe 3 that the taper hole other end is provided with internal thread, chuck 4 outer rims are the taper shapes that are complementary with chuck sleeve pipe 3 endoporus, have four bar shaped openings 7 of single-ended sealing on its wall, strip gab is crosswise and is symmetrically distributed, and two adjacent strip gab 7 blind ends are respectively at the two ends of chuck 4, pulling force handle 1 stretches into the rear end of outer layer sleeve 2, this inserting end is provided with the external screw thread that matches with internal thread on the chuck sleeve pipe 3, its top is provided with and holds out against the top of chuck 4, thus by precession pulling force handle 1 hold out against chuck 4 firm clamp carbon fiber core in the carbon fiber core aluminium stranded conductor.Outer fringe surface behind pulling force handle 1 external screw thread also is provided with the annular groove 8 that multiple tracks is used to improve the crimping reliability, forms one section crimp region 9, also can form one section crimp region 9 equally between outer layer sleeve 2 and inner layer sleeve 5.

Claims

1. strain clamp, it is characterized in that: it comprises pulling force handle (1), outer layer sleeve (2), chuck sleeve pipe (3), the chuck (4) that is used for clamping carbon fiber core aluminium stranded conductor carbon fiber core and inner layer sleeve (5), has locator protrusions (6) on described outer layer sleeve (2) inwall, the inner layer sleeve (5) that the centre is installed with the carbon fiber core aluminium stranded conductor stretches in outer layer sleeve (2) front end, and the end face of this inner layer sleeve (5) inserting end contacts with locator protrusions (6) and locatees; One end of endoporus is installed in the outer layer sleeve (2) for the chuck sleeve pipe (3) that the taper hole other end is provided with internal thread, chuck (4) outer rim is the taper shape that is complementary with chuck sleeve pipe (3) endoporus, have the strip gab (7) of single-ended sealing on its wall, and adjacent two strip gabs (7) blind end is respectively at the two ends of chuck (4), pulling force handle (1) stretches into the rear end of outer layer sleeve (2), this inserting end is provided with the external screw thread that matches with internal thread on the chuck sleeve pipe (3), its top is provided with and holds out against the top of chuck (4), hold out against chuck (4) by precession pulling force handle (1) thus firm clamp carbon fiber core in the carbon fiber core aluminium stranded conductor.

2. strain clamp according to claim 1 is characterized in that: described strip gab (7) is crosswise and is symmetrically distributed.

3. strain clamp according to claim 1 and 2 is characterized in that: the outer fringe surface behind pulling force handle (1) external screw thread is provided with the annular groove (8) that multiple tracks is used to improve the crimping reliability.