CN201753536U - Transmission line iron tower with trilateral structure tower body section - Google Patents

Abstract

A transmission line tower with a triangular structure tower body section, which includes: tower legs, tower body, tower head and insulator strings, the tower head is mainly composed of wire cross arms, ground wire supports and connected with the tower body The upper tower body is composed of; the tower head is fixedly connected to the upper part of the tower body through the upper tower body, and the wire cross-arm is vertically arranged on one side of the upper tower body, and is fixedly connected with the upper tower body respectively; The conductor cross-arm includes an upper cross-arm and a lower cross-arm, and two-pole wires are connected in series through insulators on the upper cross-arm and the lower cross-arm, and the hanging points of each insulator string are located at the nodes of the iron tower components; According to the requirements of the surrounding environment, the conductor cross-arms are arranged asymmetrically on both sides of the tower body; the beneficial effects of the utility model are: firstly, the tower body section adopts a triangular structure, which reduces the occupied area and the tower position selection is more flexible ;Secondly, according to the asymmetry of the force, the main materials of the tower body are reasonably arranged, and the strength of the three main materials is fully utilized to reduce the consumption of tower materials.

Description

Transmission line iron tower with triangular structure tower body section

technical field

The utility model relates to an iron tower of an overhead transmission line, more specifically, relates to an iron tower of a transmission line whose body section adopts a triangular structure design. the

Background technique

At present, the development of my country's electric power industry is advancing by leaps and bounds, and transmission lines of various voltage levels have been developed rapidly. In order to minimize the consumption of social resources in the construction of transmission lines, more and more environmentally friendly transmission line towers such as compact (shrunk) type and "F" type have been used. This type of iron tower has a common feature - the wires are no longer simply symmetrically arranged on both sides of the tower body, but reasonably arranged according to the requirements of the surrounding environment. the

In order to coordinate with the surrounding environment, it is often necessary to adopt the form of asymmetric arrangement of wires, and the asymmetric arrangement of wires directly leads to asymmetrical stress on the structure. Taking the "F" type tower as an example, the two-pole conductors are arranged on the same side of the tower body, and the stress of the main material on the side without cross-arm is obviously smaller than that on the main material on the side of cross-arm. The tower body section of the conventional transmission line tower adopts a symmetrical quadrilateral structure. At the same time, for the convenience of processing and installation, the main materials of the tower body generally adopt the same specification, that is, the main material is unified. When the quadrilateral structure is applied to the "F" shaped iron tower, the specification of the main material of the tower body is controlled by the maximum internal force of the main material on the cross-arm side, while the strength of the two main materials on the non-cross-arm side cannot be fully utilized, resulting in waste. the

For the asymmetric layout of the wire tower, the tower body section adopts a triangular structure, that is, two main materials are used on the side with a large force, and a single main material is used at the side with a small force. By adjusting the triangle structure on the side with a larger force Width, the main materials of the tower body are arranged according to the actual stress situation, and the strength of the three main materials is fully utilized. The structural form is more reasonable, which can effectively reduce the tower weight and basic material consumption, and improve the economy of the transmission line tower. the

Contents of the invention

The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a simple, compact, economical and reasonable triangular structure tower section transmission line iron tower. the

In order to solve the above problems, the utility model is realized through the following technical scheme: it includes: tower legs, tower body, tower head and insulator string, the tower head is mainly composed of wire cross arm, ground wire support and tower body The upper tower body is connected together; the tower head is fixedly connected to the upper part of the tower body through the upper tower body, and the wire cross-arm is vertically arranged on the same side of the upper tower body, and is fixedly connected with the upper tower body respectively. the

The wire cross-arm includes an upper cross-arm and a lower cross-arm, and two-pole wires are connected in series through insulators on the upper cross-arm and the lower cross-arm, and the hanging points of each insulator string are located at the nodes of the iron tower components; The conductor cross-arms are arranged asymmetrically on both sides of the tower according to the requirements of the surrounding environment. the

The two-pole wires are arranged vertically, and the vertical spacing and certain horizontal offset are guaranteed between the upper and lower wires. the

As an improvement, the cross-section of the tower body adopts a triangular structure, two main tower materials are arranged on the side with large force, and a single main material is arranged on the side with small force. By optimizing and adjusting the width of the triangular structure on the large side of the force, the maximum internal force of the main material on the small side of the force is basically equivalent to the maximum internal force of the main material on the large side of the force. The strength of the three main materials is fully exerted, and the structure is reasonable. the

Compared with the prior art, the beneficial effects of the utility model are as follows: firstly, the section of the tower body adopts a triangular structure, which reduces the occupied area, and the selection of the tower position is more flexible; secondly, according to the asymmetry of the force, it is reasonable Arrange the main materials of the tower body, make full use of the strength of the three main materials, and reduce the consumption of tower materials. Taking the "F" type iron tower as an example, the use of a triangular steel pipe structure can save about 30% of the tower weight, about 10% of the foundation concrete of the tower leg, and 20% to 30% of the steel reinforcement compared with the quadrilateral angle steel structure. the

Description of drawings

Fig. 1 is the structural representation of the utility model. the

Fig. 2 is a schematic diagram of a cross-sectional structure of a triangular structure tower body of the present invention. the

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings: As shown in Figure 1, the utility model includes: upper cross arm 1, ground wire support 2, upper tower body 3, tower leg 4, tower body 5, lower cross arm 6. Tower head 7. Insulator string 8. the

As shown in Figure 2, the section of the tower body is a triangular structure, the main tower body is arranged on the side with a large force, that is, the cross-arm side, and a single tower body is arranged on the side with a small force, that is, the side without a cross-arm Main material. the

The utility model includes: a tower leg 4, a tower body 5, a tower head 7 and a wire insulator string 8. The tower head 7 is mainly composed of a wire cross arm, a ground wire support 2 and an upper tower body connected with the tower body. 3 components; the wire cross arm includes an upper cross arm 1 and a lower cross arm 6, the tower head 7 is fixedly connected to the upper part of the tower body 5 through the upper tower body 3, the upper cross arm 1 and the lower cross arm 6 is vertically arranged on the same side of the upper tower body 3, and is fixedly connected with the upper part and the lower part of the upper tower body 3 respectively. the

The upper cross-arm 1 and the lower cross-arm 6 are connected with two-pole wires through insulator strings 8, and the hanging points of each insulator string are located at nodes of iron tower components. The two-pole wires are arranged vertically, and the vertical spacing and certain horizontal offset are guaranteed between the upper and lower wires; when the iron tower is erected, the foundation of the two tower legs on the cross-arm side has a certain pre-height, and at the same time, a high fastening rate of the iron tower bolts is ensured to ensure Prevent the iron tower from tilting inward to the wire side after the wire is erected. the

In order to make the stress of the tower body structure more reasonable, give full play to the mechanical properties of the main materials of each tower body, and reduce the weight of the tower, the section of the tower body adopts a triangular structure, and two main materials are arranged on the side of the large force (cross-arm side). , A single main material is arranged on the side with small force (side without cross arm). At the same time, the width of the triangular structure in the cross-arm direction is adjusted to optimize the mechanical performance of the main materials of the three towers. the

Finally, it should be noted that what is listed above are only specific embodiments of the present invention. Apparently, the utility model is not limited to the above embodiments, and many variations are possible. All deformations that a person skilled in the art can derive or associate directly from the content disclosed in the utility model shall be considered as the protection scope of the utility model. the

Claims (3)

1. triangle structure body of the tower section iron tower of power transmission line, it includes: tower leg, body of the tower, tower head and insulator string, it is characterized in that described tower head (7) mainly by the lead cross-arm, line bracket (2) and form with the last body of the tower (3) that body of the tower is connected together mutually; Described tower head (7) is gone up the top that body of the tower (3) is fixedly connected on body of the tower (5) by described, and the lead cross-arm is arranged vertically in the same side of last body of the tower (3), and fixedlys connected with last body of the tower (3) respectively.

2. triangle structure body of the tower section iron tower of power transmission line according to claim 1, it is characterized in that described lead cross-arm includes cross-arm (1) and following cross-arm (6), described upward cross-arm (1) and following cross-arm (6) are gone up and are connected with two polar conductors by insulator string (8), and the hanging point of each insulator string all is positioned at the node place of iron tower member; Described lead cross-arm is in the both sides of body of the tower asymmetric arrangement.

3. triangle structure body of the tower section iron tower of power transmission line according to claim 2 is characterized in that described two polar conductor vertical arrangements, guarantees vertical interval and certain horizontal-shift between the last lower wire; The body of the tower section adopts triangle form of structure, and stressed big side adopts two main materials, and stressed little side adopts single main material.

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