CN204966179U - Insulator anticreep device - Google Patents

Abstract

The utility model relates to an insulator anti-off device in the field of line fitting anti-off. The device is provided outside the bowl head with semi-circular upper and lower hoops that can surround the bowl head, fixed by connecting bolts, the middle part of the upper hoop is provided with a through hole, and the middle part of the lower hoop is provided with an inner protrusion. It can use the upper and lower hoops to fix the ball head and bowl head of the insulator, especially the setting of the through hole of the upper hoop and the inner protrusion of the lower hoop, which can reliably position the upper and lower hoops and effectively implement the control of the ball head. Position, that is, to ensure that the ball head in the insulator string does not come out of the bowl head, and to meet the normal rotation of the ball head in the bowl head. Reliably realize the purpose of the invention. At the same time, it has the advantages of simple and applicable structure, reliable limit performance, convenient installation and disassembly, reduced maintenance cost, and suitable for promotion.

Description

Insulator anti-off device

technical field

The utility model relates to an anti-off device for line fittings, in particular to an anti-off device installed in a V-shaped suspension insulator string of an overhead power transmission line to prevent a ball head from coming out of a bowl head.

Background technique

A V-shaped suspension insulator string is installed in the overhead high-voltage transmission line, and the V-shaped suspension insulator string is mostly connected with a ball-end fitting and a bowl-end hanging plate to make the insulator string tighten with the transmission line. In this connection structure, the ball head is placed in the ball socket of the bowl head. Since there is a long connection hole at the end of the bowl head, during the operation of the transmission line, the line is in the harsh natural environment in the wild for a long time, especially in the case of strong wind. Under the action of strong friction, the ball head and the bowl head will be severely worn, and the original locking device will lose its locking effect, causing the ball head to come out of the long connecting hole at the end of the bowl head. The existing V-shaped Most of the hanging insulator strings have no anti-off device, and the error in the processing of the ball head and the bowl head increases the friction, which in turn increases the probability of the ball head falling out of the bowl head. When the ball head disengages from the bowl head, an accident in which the insulator strings fall off is caused, which seriously affects the safe and stable operation of the power transmission line.

Contents of the invention

The purpose of this utility model is to provide an anti-off device for insulators, which mainly solves the problem that the ball head in the ball-and-socket connection mode is easy to come out of the bowl socket without the existing V-shaped hanging insulator string, so as to effectively avoid Accidents in which insulators are dropped in series to ensure the safe and stable operation of transmission lines.

The scheme of the present utility model is as follows : it includes connecting bolts, and the semi-circular upper and lower hoops that can surround the bowl head are set outside the bowl head, fixed by the connecting bolts, and the middle part of the upper hoop is provided with a through hole. And the middle part of the lower hoop is provided with an inner protrusion.

Beneficial effects of the utility model: due to the adoption of the structure, the relative positions of the ball head and the bowl head of the insulator can be fixed by using the upper and lower hoops, especially the setting of the through hole of the upper hoop and the inner protrusion of the lower hoop, The upper and lower hoops can be reliably positioned and the ball head can be effectively limited, that is, to ensure that the ball head in the insulator string does not come out of the bowl head, and to meet the normal rotation of the ball head in the bowl head. Reliably realize the purpose of the invention. At the same time, it has the advantages of simple and applicable structure, reliable limit performance, convenient installation and disassembly, reduced maintenance cost, and suitable for promotion.

Description of drawings

Figure 1 is a front view of the structure of the insulator anti-off device;

The top view of Fig. 2 Fig. 1;

Figure 3 is a schematic diagram of the installation position of the insulator anti-off device;

Fig. 4 is a schematic view along the direction A of Fig. 3 .

detailed description

The insulator anti-off device shown in Figure 1 is provided with semi-annular upper and lower hoops 1 and 2 that can surround the bowl head outside the bowl head, that is, at the ball cap. The middle part of the upper hoop 1 is provided with a through hole 3, and The middle part of the lower hoop 2 is provided with an inner protrusion 4 . The upper and lower hoops 1 and 2 correspond to each other, and the two ends are connected and fixed with the bowl head through connecting bolts 5 to form an integral body.

The utility model is installed at the ball cap of the bowl head in the "V" type suspension insulator string of the power transmission line, the through hole 3 on the upper hoop 1 is set on the locking bolt, and the inner protrusion on the lower hoop 2 4 just correspond to the elongated connecting hole at the end of the bowl. The device can limit the position of the ball head when the locking device of the ball head and the bowl head fails, so that the ball head cannot escape from the socket of the bowl head. Avoid the accidents that cause insulator string drop, and significantly improve the safety and reliability of transmission line operation.

Claims (1)

1. An insulator anti-detachment device, including connecting bolts (5), characterized in that: semi-circular upper and lower hoops (1, 2) that can surround the bowl head are arranged outside the bowl head, and are fixed by connecting bolts (5) , the middle part of the upper hoop (1) is provided with a through hole (3), and the middle part of the lower hoop (2) is provided with an inner protrusion (4).