CN203846839U - Extensible multi-loop incoming line door type pole and tower - Google Patents

Abstract

The utility model discloses an expandable multi-circuit incoming line gate type pole tower, which comprises a cross arm, a pole body and a ground wire support, and a hanging board is arranged on the cross arm, and is characterized in that the pole bodies are parallel and equal in height There are two poles, and ground wire brackets are fixed on the upper ends of the two poles; the cross arm is provided with three poles, which are fixedly connected between the upper ends of the two vertical poles and the two poles respectively through corresponding flanges. On the outer side of the upper end of the shaft, and the three cross-arms are in a straight line; the outer ends of the cross-arms on both sides are provided with further expansion flanges. The expandable multi-circuit incoming line gate-type pole tower, because the cross-arm can be expanded according to the needs, so it can realize multiple overhead outgoing lines or incoming lines through the expansion of the cross-arm without adding pole towers, which can reduce the project cost and facilitate construction. The outlet method is simplified and safe, and no additional towers are required when the double-circuit lines on the same tower are crossed. It can be widely applied to the incoming and outgoing lines of multi-circuit lines in substations.

Description

Expandable multi-circuit incoming line portal tower

technical field

The utility model relates to an improvement of a cable entry and exit pole tower of a substation, in particular to an expandable multi-circuit entry gate type pole tower.

Background technique

At this stage, with the development of the economy, the national infrastructure power construction and high-voltage power grid have also developed rapidly. In order to reduce the area occupied by substations and save line corridors, most substations use cables for incoming and outgoing lines; in cities, power lines are required to be laid underground, and then enter the substation through overhead power lines after arriving at the substation. At present, most of the towers commonly used outside the substation are double-circuit line towers or single-circuit line towers, which consist of a tower body and a cross arm. . The disadvantages of this kind of tower are: first, it is impossible to take into account multiple overhead outgoing or incoming lines outside the substation; second, there are many towers, and after the erection of a basic tower, it cannot be expanded. If you want to go out again, you can only build a new one. The foundation tower increases engineering investment and causes waste. It can be seen from the search that there is no report on a tower that realizes multiple overhead outgoing or incoming lines through cross-arm expansion without adding a tower.

Contents of the invention

The purpose of this utility model is to provide an expandable multi-circuit feeder with a safe structure, which can realize multiple overhead outgoing or incoming wires through cross-arm expansion without adding poles and towers, reduces engineering cost, facilitates construction, simplifies the way of outgoing wires, and has a safe structure. Line gate tower.

In order to achieve the above purpose, the technical solution adopted by the utility model is: the expandable multi-circuit incoming line gate type pole tower includes a cross arm, a pole shaft and a ground wire support, and three equidistant arrays are arranged on the side wall of the cross arm The hanging wire board is characterized in that: the shafts are parallel and have two equal heights, and the upper ends of the two shafts are fixed on the ground wire brackets through the corresponding flanges, so that the two shafts and the The ground wire bracket forms a door shape; the cross arms are provided with three, which are fixedly connected between the upper ends of the two shafts and outside the upper ends of the two shafts through corresponding flanges, and the three cross arms are arranged in a straight line. and parallel to the ground wire support; there are re-expanded flanges at the outer ends of the cross arms on both sides.

The utility model is also implemented through the following measures: the cross-arm is fixedly connected with the rod body through the diagonal stay rod.

The distance between the cross-arm and the ground wire support is 3-5m, the length of the cross-arm is 6-9m, and the outer diameter is 0.2-0.3m, and the length and the distance between the wires can be adjusted and determined according to the voltage level; the rod The height of the body is 13-17m, the outer diameter of the bottom is 0.7-0.9m, and the outer diameter of the top is 0.4-0.5m, which can be adjusted according to needs.

The shaft is wound and welded by Q345B steel plate with a thickness of 8 mm, and is in the shape of a tapered tube.

Both the cross arm and the ground wire support are made of tubular Q345B steel plates with a thickness of 8mm; the outer diameter of the ground wire support is 0.1-0.2m.

The beneficial effect of the utility model is that: the expandable multi-circuit incoming line gate-type pole tower, because the cross arm can be expanded according to the needs, so it can realize multiple overhead outgoing lines or incoming lines through the expansion of the cross arm without adding a pole tower. It can reduce the project cost, facilitate construction, simplify the way of outgoing lines, and have a safe structure. When the double-circuit line crosses on the same tower, there is no need to add additional towers and occupy corridors. It can be widely applied to the incoming and outgoing lines of multi-circuit lines in substations.

Description of drawings

Fig. 1 is a schematic front view of the structure of the utility model.

In the figure: 1. Cross arm; 2. Shaft; 3. Ground wire support; 4. Flange; 5. Extended flange; 6. Hanging plate;

Detailed ways

Make the utility model with reference to Fig. 1. The expandable multi-circuit incoming line gate type pole tower includes a cross arm 1, a pole body 2 and a ground wire support 3, and three hanging boards 6 arranged equidistantly on the side wall of the cross arm 1 are characterized in that: There are two shafts 2 parallel and equal in height, and the upper ends of the two shafts 2 are fixed on the ground wire bracket 3 through the corresponding flange, so that the two shafts 2 and the ground wire bracket 3 form a door The cross-arm 1 is provided with three, which are fixedly connected between the upper ends of the two shafts 2 and outside the upper ends of the two shafts 2 through the corresponding flanges 4, and the three cross-arms 1 are in a straight line and parallel to the ground wire support 3; the outer ends of the cross arm 1 on both sides are provided with a re-expanded flange 5, through which the re-expanded flange 5 can be extended outward to connect the same shaft 2 and the cross-arm 1, to meet the expansion requirements of multiple overhead outgoing or incoming lines.

As an improvement of the present invention: the upper wall of the cross arm 1 is fixedly connected with the shaft 2 through the diagonal stay rod 7, so as to improve the bearing capacity of the cross arm 1.

The distance between the cross-arm 1 and the ground wire support 3 is 3-5m, the length of the cross-arm 1 is 6-9m, and the outer diameter is 0.2-0.3m, and its length and distance between lines can be adjusted and determined according to the voltage level; The height of the shaft 2 described above is 13-17m, the bottom outer diameter is 0.7-0.9m, and the top outer diameter is 0.4-0.5m, which can be adjusted as required.

The shaft 2 is wound and welded by Q345B steel plate with a thickness of 8mm, and is in the shape of a tapered tube, which is convenient for installation and transportation. urban area etc.

Both the cross arm 1 and the ground wire support 3 are made of tubular Q345B steel plates with a thickness of 8mm; the outer diameter of the ground wire support 3 is 0.1-0.2m.

When using the utility model, the utility model is assembled on the outgoing line side of the substation, and through the tension-resistant connection, the incoming and outgoing lines of the substation are unified and planned.

Claims (3)

1. Expandable multi-circuit incoming line gate type pole tower, including cross arm (1), pole body (2) and ground wire support (3), and three hanging wires arranged equidistantly on the side wall of cross arm (1) The plate (6) is characterized in that two shafts (2) are parallel and of the same height, and the upper ends of the two shafts (2) are fixed on the ground wire brackets through corresponding flanges (3); said cross arm (1) is provided with three pieces, which are respectively fixedly connected between the upper ends of the two shafts (2) and the upper ends of the two shafts (2) through the corresponding flanges (4). On the outside, the three cross-arms (1) are in a straight line and parallel to the ground support (3); the outer ends of the cross-arms (1) on both sides are provided with further expansion flanges (5). 2. The expandable multi-circuit inlet gantry pole tower according to claim 1, characterized in that: the cross arm (1) is fixedly connected to the shaft (2) through a diagonal tie rod (7). 3. The expandable multi-circuit inlet gate pole tower according to claim 1 or 2, characterized in that: the distance between the cross arm (1) and the ground wire support (3) is 3-5m, and the cross arm ( 1) The length is 6-9m, the outer diameter is 0.2-0.3m; the height of the shaft (2) is 13-17m, the outer diameter of the bottom is 0.7-0.9m, and the outer diameter of the top is 0.4-0.5m m.