Connecting wire clamp for power transmission steel-cored aluminum stranded wire and lower lead of insulated wire

Abstract

The utility model discloses a connecting wire clamp for a power transmission steel-cored aluminum stranded wire and a lower lead of an insulated wire, which comprises a large clamping plate and a small clamping plate, the upper half parts of the small clamping plate and the large clamping plate are completely consistent in structure, shape and size, and the upper half parts of the small clamping plate and the large clamping plate are respectively provided with two bolt holes. The size of the lower half portion of the large clamping plate is smaller than that of the upper half portion, and inward grooves are symmetrically formed in the lower half portion of the large clamping plate. The special structural shape design of the lower half part of the large clamping plate is convenient for avoiding a bolt on original equipment, and the insulation skin of the insulated wire is more tightly pressed. The connecting wire clamp adopts a unique structural design, can realize firm connection between the steel-cored aluminum stranded wire and the insulated wire, and ensures good electrical performance and mechanical strength at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric power transmission line, concretely is a new type of connecting wire clamp between steel core aluminium stranded conductor and insulated conductor in 35KV transmission line. BACKGROUND

[0002] In the traditional 35KV transmission line, the connection between the steel core aluminium stranded conductor and the insulated conductor is usually fixed by using ordinary wire clamp. However, this connection method has some problems, such as large contact resistance, easy to produce corona discharge, insufficient mechanical strength, etc. These problems not only affect the transmission efficiency of the transmission line, but also may threaten the safe operation of the line. Therefore, it is necessary to develop a new type of connecting wire clamp to solve these problems. SUMMARY

[0003] In order to overcome the defects of the prior art, the utility model provides a connecting wire clamp of transmission steel core aluminium stranded conductor and insulated conductor down lead. The connecting wire clamp adopts a unique structure design, which can realize the firm connection between the steel core aluminium stranded conductor and the insulated conductor, while ensuring good electrical performance and mechanical strength. The structure is simple, easy to install, small in contact resistance and high in mechanical strength.

[0004] The technical scheme of the utility model is a connecting wire clamp of transmission steel core aluminium stranded conductor and insulated conductor down lead, which comprises two clamping plates of large and small sizes. The upper half parts of the small clamping plate and the large clamping plate are completely consistent in structure, shape and size, and each of the upper half parts of the small clamping plate and the large clamping plate is provided with two bolt holes. The lower half part of the large clamping plate is smaller in size than the upper half part, and the lower half part of the large clamping plate is symmetrically provided with an inward recess.

[0005] The utility model has the following beneficial effects:

[0006] 1. Small contact resistance, reducing power loss;

[0007] 2. High mechanical strength, capable of bearing large tension and pressure;

[0008] 3. Easy to install, improving construction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 is a structural schematic view of the large clamping plate of the utility model;

[0010] Figure 2 is the B view of Figure 1 ;

[0011] Figure 3 is the A view of Figure 1 ;

[0012] Figure 4Is the structure diagram of the small clamp plate of the utility model;

[0013] Figure 5 Is the assembly schematic diagram. DETAILED DESCRIPTION

[0014] As Figure 1 , Figure 2 , Figure 3 , Figure 4 The utility model provides a kind of connecting wire clamp of transmission steel core aluminium stranded conductor and insulated conductor lower lead wire, as shown in the drawing, the connecting wire clamp includes two clamp plates of big and small, wherein, two clamp plates are made of high-strength insulating material, small clamp plate 2 and big clamp plate upper half portion structure, shape, size are completely identical, small clamp plate 2 and big clamp plate upper half portion are equipped with two bolt holes, the size of big clamp plate lower half portion is less than upper half portion, and big clamp plate lower half portion is symmetrically equipped with inward recess, to avoid bolt on original equipment when installation, more tightly compress the insulation of insulated conductor.

[0015] As Figure 5 Shown, in use, first, insulated conductor is placed between two clamp plates, then insulated conductor insulation is compressed by big and small clamp plate, and it is tightly attached on wire core surface, to realize the firm connection between steel core aluminium stranded conductor and insulated conductor.

[0016] Through the above implementation, it can be seen that the connecting wire clamp of the utility model has the advantages of simple structure, convenient installation, small contact resistance and high mechanical strength. It can effectively solve the problems existing in the prior art and improve the transmission efficiency and safety performance of power transmission line.

Claims

1. A connecting wire clamp for power transmission steel core aluminum stranded wire and lower lead of insulated conductor, characterized by The connecting wire clamp comprises two clamping plates, one large and one small. The structure, shape and size of the upper part of the small clamping plate (2) and the large clamping plate (1) are completely consistent. The upper parts of the small clamping plate (2) and the large clamping plate (1) are both provided with two bolt holes. The size of the lower part of the large clamping plate (1) is smaller than that of the upper part, and the lower part of the large clamping plate (1) is symmetrically provided with inward grooves.

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