CN205377232U - Cable termination pole and electric strutting arrangement thereof - Google Patents

Abstract

The utility model discloses a cable terminal rod and an electric supporting device thereof. The electrical support device includes a cross-arm, on which a branch bracket extending longitudinally is fixed, and the branch bracket is provided with a lightning arrester installation position and a terminal installation position, and the distance between the lightning arrester installation position, the terminal installation position and the cross-arm is different. less than the creepage distance. In the utility model, the lightning arrester and the cable terminal are fixed on the branch bracket of the electrical support device, so that the lightning arrester and the cable terminal are arranged at the same height position, so that when the lightning arrester and the cable terminal are arranged, the electrical support device and the wire The supporting parts between the rods will not affect the arrangement position between the arrester and the cable terminal, so that the distance between the arrester and the cable terminal can be arranged strictly according to the leakage distance, thus shortening the relative distance between the arrester and the cable terminal , which shortens the lead wire length between the cable terminal and the arrester.

Description

Cable terminal rod and its electrical support device

technical field

The utility model relates to a cable terminal rod and an electric supporting device thereof.

Background technique

The cable terminal rod is used for the connection between high-voltage overhead lines and high-voltage cables. The cable terminal and lightning arrester on the cable terminal rod are the main electrical devices at the connection between the cable line and the overhead line. An electrical lead wire is usually used between the lightning arrester and the cable terminal Connection, the two ends of the electrical lead wires are conductively connected to the two electrical devices through bolt connection, such as the "cable terminal rod" disclosed in the Chinese patent document CN103280758A, including a tower rod and several cross arms fixed from bottom to top, Cable terminals and lightning arresters are respectively connected to each cross-arm, and the cable terminals and lightning arresters are respectively fixed on different cross-arms and fixed on the tower pole in a relatively independent supporting manner. Since the distance between the arrester and the cable terminal needs to be greater than its leakage distance, the leakage distance refers to the minimum safe distance between the live conductor and the grounding body. The leakage distance is a certain value, so the cable terminal is usually located under the arrester, that is, the cable terminal and the arrester It needs to be installed at different heights. At this time, due to the influence of the diagonal brace under the cross arm, in order to avoid the interference of the diagonal brace on the cable terminal or lightning arrester installed on the cross arm, the distance between the upper and lower adjacent cross arms is relatively large, so that The distance between the cable terminal and the arrester is further increased, which increases the length of the lead wire between the cable terminal and the arrester, and the lead wire is too long. In windy, rainy and snowy weather, the lead wire will be damaged The phenomenon of violent shaking makes the bolt connection structure connecting the cable terminal and the lightning arrester at both ends of the lead wire loose. to damage.

Utility model content

The purpose of the utility model is to provide an electrical support device that shortens the distance between the cable terminal and the lightning arrester, and at the same time provide a cable terminal rod using the electrical support device.

In order to achieve the above object, the technical scheme of the electrical support device in the utility model is as follows:

The electrical support device includes a horizontally extending cross arm for fixing on the utility pole, and a longitudinally extending branch bracket is fixed on the cross arm, and the lightning arrester installation position for the lightning arrester installation and the cable terminal installation are provided on the branch bracket. The terminal installation position, the lightning arrester installation position, the distance between the terminal installation position and the cross-arm are not less than the creepage distance.

There are more than two branch brackets arranged at intervals in the transverse direction, and the distance between adjacent branch brackets is not less than the creepage distance.

There are three branch brackets, which are divided into two end branch brackets symmetrically arranged at the two ends of the cross arm and a middle branch bracket in the middle of the cross arm. The distance between the two end branch brackets and the middle branch bracket is equal.

The middle part of the end branch bracket is fixedly connected to the end of the cross arm, and the two ends of the end branch bracket are respectively suspended on the longitudinal sides of the cross arm, and the installation position of the arrester and the terminal installation position on the end branch bracket are respectively located at the two suspensions. On the stretch end.

The distance from the two overhanging ends of the end branch bracket to the cross arm is equal.

The middle branch support cantilever from the cross arm to the longitudinal side, and the distance from one of the lightning arrester installation position and the terminal installation position on the middle branch support to the cross arm is equal to twice the distance from the other to the cross arm.

The cross arm is provided with two fastening holes for clamps or hoops to be worn and fixed on the utility pole, at least one of the two fastening holes is a long hole extending laterally.

The technical scheme of the cable terminal rod in the utility model is as follows:

The cable terminal pole includes the pole and the lightning arrester and cable terminal fixed on it by the electrical support device. The electrical support device includes a cross arm fixed on the pole. There are lightning arrester installation positions for lightning arrester installation and terminal installation positions for cable terminal installation. The distance between lightning arrester installation positions, terminal installation positions and cross-arms is not less than the creepage distance.

There are more than two branch brackets arranged at intervals in the transverse direction, and the distance between adjacent branch brackets is not less than the creepage distance.

The lightning arresters on each branch support are at the same end, and the cable terminals are at the opposite end.

In the utility model, the lightning arrester and the cable terminal are fixed on the branch bracket of the electrical support device, so that the lightning arrester and the cable terminal are arranged at the same height position, so that when the lightning arrester and the cable terminal are arranged, the electrical support device and the wire The supporting parts between the rods will not affect the arrangement position between the arrester and the cable terminal, so that the distance between the arrester and the cable terminal can be arranged strictly according to the leakage distance, thus shortening the relative distance between the arrester and the cable terminal , which shortens the length of the lead wire between the cable terminal and the arrester, avoiding the large shaking of the lead wire due to factors such as wind, rain and snow.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the cable terminal rod of the present utility model;

Fig. 2 is a schematic structural view of the electrical support device in Fig. 1;

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

Fig. 4 is a left side view of Fig. 2 .

detailed description

The embodiment of the cable terminal pole in the utility model: as shown in Figure 1 to Figure 4, comprises electric pole 1 and its top fixed electric support device, and electric support device mainly is made up of cross arm 21 and branch bracket, and cross arm 21 and The branch brackets are all made of angle iron. The cross arm 21 extends laterally, and the middle part of the cross arm 21 is provided with two fastening holes for the installation of the hoop 5, so that the cross arm 21 is tightly fixed on the outer periphery of the utility pole 1 through the hoop 5, and the two One of the four holding holes is a round hole 211, and the other is a long hole 212 extending transversely. The long hole 212 can be used to adjust the hoop 5 to be installed and fixed on the utility pole 1 with different outer diameters. There are three branch brackets, which are divided into two end branch brackets 22 arranged symmetrically at both ends of the cross arm 21 and a middle branch bracket 23 in the middle of the cross arm 21. The middle branch bracket 23 and the two end branch brackets 22 all extend longitudinally. And the middle part of the end branch bracket 22 is welded and fixed on the transverse end, the two ends of the end branch bracket 22 are respectively suspended on the longitudinal sides of the cross arm 21, and the two overhanging ends are respectively provided with terminals for the installation of the cable terminal 31. The installation position 41 and the arrester installation position 42 installed for the arrester 32, the arrester installation position 42 and the terminal installation position 41 are provided with mounting holes for the arrester 32 and the cable terminal 31 to be installed respectively; In the middle, the distance between the branch brackets 22 at both ends and the middle branch bracket 23 is equal, and the middle branch bracket 23 cantilever from the cross arm 21 to its longitudinal side, and the lightning arrester installation position 42 and the terminal installation position on the middle branch bracket 23 41 are arranged at intervals in the longitudinal direction, and if the middle branch bracket 23 is positioned at the front side of the cross arm 21, the arrester 32 on the end branch bracket 22 and the middle branch bracket 23 is located behind the cable terminal 31. On the end branch support 22, the distance between the lightning arrester 32 and the cable terminal 31 and the cross arm 21 is not less than the respective creepage distances, and the two distances are equal, and the distance between the lightning arrester 32 and the cable terminal 31 is equal to twice the creepage distance; On the middle branch bracket 23, the distance from the arrester 32 to the cross arm 21 is equal to 1/2 of the distance from the cable terminal 31 to the cross arm 21, and the distance from the arrester 32 to the cross arm 21 and the distance from the cable terminal 31 to the cross arm 21 are the same. Not less than the creepage distance.

In this embodiment, the cross arm 21 is placed horizontally, and the three branch brackets on the cross arm 21 are arranged sequentially from left to right. The three branch brackets are all perpendicular to the cross arm 21, and are respectively arranged on the three branch brackets for installation. The three-phase terminal head of the cable and the installation hole of the corresponding lightning arrester 32, and the longitudinal length of the three branch brackets are not less than twice the creepage distance. The three branch brackets and the cross arm 21 are all fixedly connected by welding, and the two ends of the two end branch brackets 22 exceed the longitudinal sides of the cross arm 21, and the excess length is equal, and the leakage current is not less than twice distance. Therefore, in the present embodiment, the electrical support device arranges the cable terminal 31 and the lightning arrester 32 in the same plane, and the length of the electrical lead wire between the cable terminal 31 and the lightning arrester 32 of each phase loop can be shortened, which solves the problem that the cable terminal 31 and the lightning arrester 32 are different. When the installation height is too long, the connection bolts at both ends are loose and the connection is heated due to the excessive swing range.

In the above-mentioned embodiment, both ends of the two end branch brackets are suspended in the air, and one end of the middle branch bracket is suspended in the air. In other embodiments, the three branch brackets can all adopt a structure with one end suspended in the air. The number of phases of the circuit is set. If a four-phase circuit is used, four branch supports can be selected; when a two-phase circuit is used, two branch supports can be selected.

In the above embodiments, the cross arm is fixed on the utility pole through hoops. In other embodiments, the cross arm can also be fixed on the utility pole by means of diagonal braces, clamps and the like.

Embodiment of the electric support device in the utility model: the structure of the electric support device in this embodiment is the same as the structure of the electric support device in the above embodiment, so it will not be repeated here.

Claims (10)

1. Electrical support device, including a horizontally extending cross arm for fixing on the utility pole, characterized in that the cross arm is fixed with a branch bracket extending longitudinally, and the branch bracket is provided with a lightning arrester installation position for lightning arrester installation And the terminal installation position for the cable terminal installation, the distance between the lightning arrester installation position, the terminal installation position and the cross-arm is not less than the creepage distance. 2 . The electrical support device according to claim 1 , wherein there are more than two branch supports arranged at intervals in the lateral direction, and the distance between adjacent branch supports is not less than the leakage distance. 3 . 3. The electric support device according to claim 2, characterized in that, there are three branch brackets, which are divided into two end branch brackets symmetrically arranged at the two ends of the cross arm and a middle branch bracket in the middle of the cross arm, with two ends The distance between the branch support and the middle branch support is equal. 4. The electric support device according to claim 3, characterized in that, the middle part of the end branch bracket is fixedly connected to the end of the cross arm, and the two ends of the end branch bracket hang respectively on the longitudinal sides of the cross arm, and The arrester installation position and the terminal installation position on the end branch bracket are respectively located on the two overhanging ends. 5. The electrical support device according to claim 4, wherein the distance from the two overhanging ends of the end branch bracket to the cross arm is equal. 6. The electrical support device according to claim 3, characterized in that, the middle branch bracket cantilever from the cross arm to one side of the longitudinal direction, and the distance from one of the lightning arrester installation position and the terminal installation position on the middle branch support to the cross arm is Equal to twice the distance from the other to the cross arm. 7. The electrical support device according to any one of claims 1 to 6, characterized in that the cross arm is provided with two clamping holes for clamps or clamps to be worn and fixed on the utility pole , at least one of the two fastening holes is a long hole extending transversely. 8. Cable terminal poles, including utility poles and lightning arresters and cable terminals fixed on them by electrical support devices. The electrical support devices include cross-arms fixed on the utility poles. It is characterized in that the cross-arms are fixed with branches extending longitudinally Brackets and branch brackets are provided with lightning arrester installation positions for lightning arrester installation and terminal installation positions for cable terminal installation. The distance between lightning arrester installation positions, terminal installation positions and cross-arms is not less than the leakage distance. 9 . The cable terminal rod according to claim 8 , wherein there are more than two branch brackets arranged at intervals in the transverse direction, and the distance between adjacent branch brackets is not less than the leakage distance. 10. The cable terminal rod according to claim 9, wherein the lightning arresters on each branch support are at the same end, and the cable terminals are at the opposite end.