CN2290134Y

CN2290134Y - Flexible expand-resisting cable clamp

Info

Publication number: CN2290134Y
Application number: CN 96245164
Authority: CN
Inventors: 胡广生; 陆平
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-11-04
Filing date: 1996-11-04
Publication date: 1998-09-02
Anticipated expiration: 2006-11-04

Abstract

The utility model relates to a flexible expansion-resisting cable clamp which comprises a main sleeve tube 1, a current-drawing tube 2, a flexible wire 3, equipment clamp 4 and a steel anchor 6. The current-drawing tube 2 is fixed to the lower part of the main sleeve tube 1, one end of the main sleeve tube 1 is in compression joint with a pierced conducting wire, and the other end of the main sleeve tube 1 is in compression joint with the steel anchor 6. One end of the flexible wire 3 is penetrated and fixed to the inner part of current-drawing tube 2, and the other end of the flexible wire 3 is penetrated and fixed to the inner part of the equipment clamp 4. The utility model has the advantages of simple structure and easy installation, and the utility model can make the jumper wire conform to the catenary or the parabola equation; thus, an adequate clearance can be guaranteed to be formed between the jumper wire and a pole tower no matter which weather condition is provided; thereby, the accident rate of a transmission line is lowered.

Description

Flexible strain clamp

The utility model relates to a kind of electric armour clamp, relates in particular to a kind of flexible strain clamp that is used for overhead transmission line and electric substation.

The wire jumper of transmission line calculates, and generally adopts catenary or parabolic equation,, can guarantee under various meteorological conditions that enough gaps are arranged between wire jumper and shaft tower according to the wire jumper that above-mentioned Equation for Calculating is come out, and makes the transmission line can safe operation.But the strain clamp that uses remains the strain clamp of in 1958 standard GB 2330.3-85 at present, as shown in Figure 1.Vertical angle, horizontal angle between this wire clamp master sleeve pipe and the drainage thread plate is a definite value, and the hitch point of wire jumper is changeless, and wire jumper can not satisfy catenary or parabolic equation thereby cause as a rule, has increased the rate of failure of transmission line.

The purpose of this utility model is that the strain clamp to present use improves, and provides a kind of simple in structure, easy for installation, and makes wire jumper meet the flexible strain clamp of catenary and parabolic equation substantially.

For achieving the above object, flexible strain clamp of the present utility model comprises main sleeve pipe, drainage tube, soft annealed wire, equipment folder, steel anchor; Drainage tube is fixed under the main sleeve pipe; One end of main sleeve pipe is connected with the lead that penetrates, and the other end is connected with the steel anchor; One end of soft annealed wire penetrates and is fixed in the drainage tube, and the other end penetrates and is fixed in the device clamp, and the equipment folder is connected with the device clamp of wire jumper.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the structural representation of existing strain clamp;

Fig. 2 is the structural representation of the flexible strain clamp of the utility model;

Fig. 3 is an embodiment who connects between main sleeve pipe 1, drainage tube 2 and the soft annealed wire 3;

Fig. 4 is another embodiment that connects between main sleeve pipe 1, drainage tube 2 and the soft annealed wire 3.

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 2, flexible strain clamp of the present utility model comprises main sleeve pipe 1, drainage tube 2, soft annealed wire 3, equipment folder 4, anti-electrochemical corrosion transition film 5 and steel anchor 6; Drainage tube 2 is fixed under the main sleeve pipe 1; One end of main sleeve pipe 1 and lead 8 crimping that penetrate, the other end and the 6 bolt shape crimping of steel anchor; One end of soft annealed wire 3 penetrates and is fixed in the drainage tube 2, the other end and device clamp 4 crimping; Equipment folder 4 is connected with the device clamp of wire jumper.

Key point of the present utility model is to remove the drainage plate 7 of existing strain clamp, and the aluminum casing of original strain clamp is designed to up and down two overlapping main sleeve pipes 1 and drainage tube 2, and between drainage tube 2 and equipment folder 4 one section soft annealed wire 3 of introducing; Because soft annealed wire 3 has flexibility, it is relevant that the level of soft annealed wire 3 and main sleeve pipe 1 and the angle of vertical direction and the equipment that acts on press from both sides the size and Orientation of 4 power, is the angle of a change at random.Make the hanging point of wire jumper become and be similar to free suspension point by original rigidity.Thereby make wire jumper can not be subjected to strain insulator string dangle the corner of angle, angle pole, directly draw wire jumper, around the influence of the factors such as wire jumper of drawing wire jumper, bundle conductor.

Fig. 3 is an embodiment who connects between described main sleeve pipe 1, drainage tube 2 and the soft annealed wire 3, and it is the profile along the I-I direction of Fig. 2.Described soft annealed wire 3 is by in advance in drainage tube 2, and makes one with main sleeve pipe 1.

Fig. 4 is another embodiment that connects between described main sleeve pipe 1, drainage tube 2 and the soft annealed wire 3, and it is the profile along the I-I direction of Fig. 2.Described soft annealed wire 3 is compressed on 2 li of drainage tubes, and then welds together with main sleeve pipe 1.

Described main sleeve pipe 1, drainage tube 2 are aluminum products or other metallic article; Described soft annealed wire 3 adopts special steel reinforced aluminium conductor, copper or alloy litzendraht wire; In order to prevent electrochemical corrosion, must on the contact interface between all soft annealed wires 3 and drainage tube 2, the equipment folder 4, add the anti-electrochemical corrosion transition film 5 of one deck.The electric current of transmission line passes through lead 8, main sleeve pipe 1, drainage tube 2, anti-electrochemical corrosion transition film 5, soft annealed wire 3, warp is prevented electrochemical corrosion transition film 5, device clamp 4 again, and device clamp and the wire jumper through wire jumper down continues at last.

Compare with existing strain clamp, the utility model device has following beneficial effect: make Wire jumper more meets catenary or parabolic equation, thereby more can guarantee under various meteorological conditions, jumps Enough gaps are arranged between line and shaft tower, reduced widely the accident rate of transmission line of electricity. Because wire jumper Hanging point become by original rigidity and be similar to free suspension point, thereby make wire jumper not be subjected to strain insulator exhausted The edge substring dangle the corner of angle, angle pole, directly draw wire jumper, around the wire jumper that draws wire jumper, split conductor Etc. the impact of factor, under the wire jumper length of can be directly calculating according to catenary or parabolic equation Line has been avoided complicated field lofting, so that the installation of wire jumper is more convenient, faster, thus joint Economize a large amount of manpower and materials.

Claims

1, a kind of flexible strain clamp comprises main sleeve pipe (1), equipment folder (4), steel anchor (6); One end of main sleeve pipe (1) is connected with the lead that penetrates (8), and the other end is connected with steel anchor (6), and equipment folder (4) is connected with the device clamp of wire jumper; It is characterized in that: it also comprises drainage tube (2), soft annealed wire (3), and drainage tube (2) is fixed under the main sleeve pipe (1); One end of soft annealed wire (3) penetrates and is fixed in the drainage tube (2), and the other end penetrates and is fixed in the device clamp (4).

2, flexible strain clamp according to claim 1 is characterized in that: the level of soft annealed wire (3) and main sleeve pipe (1) and the angle of vertical direction are relevant with the size and Orientation of the power that acts on equipment folder (4), are the angles of a change at random.

3, flexible strain clamp according to claim 1 is characterized in that: described soft annealed wire (3) is by in advance in drainage tube (2), and makes one with main sleeve pipe (1).

4, flexible strain clamp according to claim 1 is characterized in that: described soft annealed wire (3) is compressed on drainage tube (2) lining, and then welds together with main sleeve pipe (1).

5, flexible strain clamp according to claim 1 is characterized in that: described main sleeve pipe (1), drainage tube (2) are aluminum products or other metallic article; Described soft annealed wire (3) adopts special steel reinforced aluminium conductor, copper or alloy litzendraht wire; On the contact interface between all soft annealed wires (3) and drainage tube (2), the equipment folder (4), add the anti-electrochemical corrosion transition film (5) of one deck.