CN206329135U - A kind of narrow base angle head tower used for transmission line - Google Patents

Abstract

The utility model relates to a narrow-base angle steel tower for transmission lines, which comprises a vertically arranged tower body and several wire mounting frames arranged horizontally on the tower body. The tower body is sequentially provided with a tower corner part, several The tapered support frame part and the vertical support frame part, the tower corner part includes four main materials arranged on the outside, a number of oblique materials arranged crosswise, and horizontal materials arranged at the upper end between the main materials. There is a main brace connected between the position and the lower end of the main material to which it is connected. Diagonal materials are connected between the material connection points, and oblique materials are connected between the connection points of each pole and the main support to the connection points of the main material and the horizontal material. The utility model has the advantages of large height-width ratio, less land occupation, good economy, convenient construction and operation and maintenance of transmission lines, and is beneficial to shorten the construction period of urban lines and speed up the progress of urban line design and construction.

Description

Narrow base angle steel tower for transmission line

technical field

The utility model belongs to the technical field of power transmission equipment, in particular to a narrow base angle steel tower for power transmission lines.

Background technique

With the rapid development of my country's social economy and the accelerated pace of urbanization, the line corridors in urban planning areas and suburban areas are becoming increasingly tense, and lines often pass through urban green belts, sidewalks and other crowded areas.

The existing conventional angle steel tower has a small height-to-width ratio, and the bottom end of the tower body is relatively wide, so it cannot be constructed in urban green belts and sidewalk alignments. For line projects of 66kV and below, tower types such as steel pipe poles and concrete poles are mainly used at present, which can basically meet the requirements of line corridors. However, for 110kV and above line projects, especially double-circuit and multi-circuit projects, due to the large load, when steel pipe poles or narrow-base steel pipe towers are used, the following problems will be involved:

(1) When the planned road is not formed, the large-scale hoisting machinery required for the transportation and assembly of thick steel pipe poles cannot enter the site, which affects the construction progress of the project; and the construction access road needs to be built, which seriously increases the project investment.

(2) Narrow base steel pipe tower is adopted, and the main material is steel pipe. For the 110kV line, due to the structural requirements, the bearing capacity of the steel pipe is not fully utilized (the stress ratio of the main material at the tip is only about 55% on average), and the economy is poor.

Therefore, it is necessary to provide a transmission tower with the advantages of good load-bearing performance, full use of material properties, low cost, small footprint, and convenient construction. Construction problems, proposed solutions.

Utility model content

In order to solve the above problems, the utility model provides a narrow base angle steel tower for transmission lines. and crossbars) are all made of angle steel, which is convenient for construction, fully utilizes the material properties, and has a simple structure and beautiful appearance.

In order to achieve the above object, the technical scheme that the utility model takes is:

A narrow-base angle-steel tower for power transmission lines, the narrow-base angle-steel tower includes a vertically arranged tower body and several wire mounting frames arranged horizontally on the tower body, and the tower body is sequentially provided with a tower angle from bottom to top part, a number of tapered support frame parts and vertical support frame parts, the tower corner part includes four main materials on the outside, a number of inclined materials arranged crosswise, and horizontal horizontal bars at the upper end between the main materials. A main brace is connected between the center position of each horizontal member and the lower end of the main material connected to it, and a strut is connected between the center position of each main strut and the center position of the main material connected to it, and each strut and the main material Diagonal materials are connected between the connection point to the connection point of the main support and the horizontal material, and oblique materials are connected between the connection point of each pole and the main support to the connection point of the main material and the horizontal material.

The connection points of the main material, the transverse material and the inclined material are nodes, and the nodes form a square transverse partition on the same plane, and the transverse partition divides the tower body into several sections, including the corner part , a tapered support frame part and a vertical support frame part, and a plurality of wire installation frames are installed on the vertical support frame part.

The main material, slanting material, horizontal material and all wire installation frames are all made of angle steel.

The tapered support frame part includes a main material arranged on the outside, an oblique material arranged between two adjacent main materials and intersecting, and the upper end and the lower end of the tapered support frame part are connected between the ends of the two adjacent main materials. There is a transverse material connected between them, the angle between the main material on the tapered support frame part and the horizontal plane is 92°, each node on the main material is connected by a diagonal material to form a diagonal bracing surface, and the upper and lower sides of the nodes are formed as Rectangular prism.

The vertical support frame part includes a main material arranged on the outside, an oblique material arranged between two adjacent main materials and intersecting, and the upper end and the lower end of the vertical support frame part are connected between the ends of the two adjacent main materials. There is a horizontal material connected between them, the angle between the main material on the vertical support frame part and the horizontal plane is 90°, each node on the main material is connected by a diagonal material to form a diagonal bracing surface, and the upper and lower sides of the nodes are formed as Rectangular hexahedron.

Compared with the closest prior art, the technical solution provided by the utility model has the following beneficial effects:

1. Compared with the existing general-purpose narrow-base steel pipe tower, the transmission tower provided by this application adopts angle steel for all the steel materials of the tower body, which solves the problem of inconvenient processing and hoisting of the steel pipe of the steel pipe tower;

2. The performance of steel is fully utilized, and the economy is good;

3. The bottom end of the tower body is narrow, and the height-to-width ratio of the tower body is greater than 10, which occupies a small area;

The utility model has the advantages of large height-width ratio, less land occupation, good economy, convenient transmission line construction, operation and maintenance, and provides technical support for the construction of 110kV urban lines, which is beneficial to shorten the construction period of urban lines and speed up the progress of urban line design and construction.

Description of drawings

Fig. 1 is the front view of the transmission tower provided by the utility model;

Fig. 2 is the partial front view of the corner of the transmission tower provided by the utility model;

Fig. 3 is a sectional view of the corner part 1-1 of the transmission tower provided by the utility model;

Fig. 4 is a partial front view of the conical support frame of the transmission tower provided by the utility model;

Fig. 5 is a partial front view of the vertical support frame of the transmission tower provided by the utility model.

Among them, 1-tower angle part, 2-conical support frame part, 3-vertical support frame part, 4-wire installation frame, 5-main material, 6-oblique material, 7-horizontal material, 8-node, 9 - tower body, 10 - main support, 11 - take up pole.

detailed description

Below in conjunction with embodiment the utility model is described further.

Example

A power transmission tower as shown in Figures 1-5 includes a vertical tower body 9 and a number of wire installation frames 4 horizontally arranged on the tower body. The tower body 9 is composed of a main material 5, an inclined material 6 and a horizontal 7 is a frame structure formed by staggered connection, and the connection points of the main material 5 , the horizontal material 7 and the oblique material 6 are nodes 8 . The tower body 9 includes a tower corner part 1, several tapered support frame parts 2 and several vertical support frame parts 3, and several wire installation frames 4 are installed on the vertical support frame parts 3. The tower corner part 1 includes four main materials 5 arranged on the outside, several oblique materials 6 arranged crosswise, horizontal materials 7 arranged on the upper ends between the main materials, and the main materials connected to each horizontal material at the central position. There are main supports 10 connected between the lower ends of the materials, and a strut 11 is connected between the central position of each main support and the central position of the main material to which it is connected. There are oblique materials 6 connected between them, and oblique materials 6 are connected between the connecting points of each pole and the main support to the connecting point of the main material and the horizontal material.

As shown in Figure 2, the tower corner part 1 has a height of 3.3m and a width of 3m. The main material 5 of the tower corner part 1 is L140×14B angle steel, the oblique material 6 is L63×5H angle steel, and the upper cross member 7 is L45. × Type 4 angle steel.

The tapered support frame part of the main tower body 9 is made up of four tapered support frame parts 2 as shown in Figure 4, and is numbered as ABCD four parts according to this from the bottom, the tapered support frame part of the main tower body 9 is generally The height is 31.7m. The main materials of the four conical support frame parts A-D of the main tower body are sequentially selected from L140×12B, L140×10B, L125×10B, and L100×10H angle steel. The oblique material of the conical support frame part A depends on the actual situation Choose L45×4 for the stress state, choose L56×4 for the upper cross member, choose L40×3, L45×4 for the oblique material of part B of the conical support frame according to the actual stress state, choose L45×4 for the upper cross member, and use the tapered support The oblique material of the frame part C is selected according to the actual stress state of L40×3, L45×4, the upper horizontal material is L45×4, the oblique material of the conical support frame part D is L45×4 according to the actual stress state, and the upper horizontal material is L45×4. Choose L40×3.

The vertical support frame part of main tower body 9 is made up of vertical support frame part 3 as shown in Figure 5, and the vertical support frame part total height of main tower body 9 is 11.4m, and the main material of vertical support frame part 3 is according to L90×7H and L63×5H are selected for the actual stress state, L40×3, L45×4, and L50×4 are selected for the oblique material according to the actual force state, and L40×3 and L45×4 are selected for the transverse material according to the actual force state.

A gusset plate is provided at the node 8, and a plurality of bolt holes are provided on the gusset plate, and the main material 5, the oblique material 6 and the transverse material 7 are connected to the gusset plate through the bolt holes.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the description is only to illustrate the principle of the utility model. Simple modifications and replacements by ordinary technicians are within the protection scope of the present utility model.

Claims (6)

1. A narrow-base angle-steel tower for transmission lines, the narrow-base angle-steel tower includes a vertically arranged tower body (9) and several wire mounting frames (4) arranged horizontally on the tower body, characterized in that: the tower The body (9) is sequentially provided with a tower corner part (1), several tapered support frame parts (2) and vertical support frame parts (3) from bottom to top, and the tower corner part (1) includes Four main materials (5) arranged on the outside, several oblique materials (6) arranged crosswise, horizontal materials (7) arranged at the upper end between each main material, and the lower end of the main material connected to the center of each horizontal material There are main braces (10) connected between them, and a strut (11) is connected between the central position of each main brace and the center of the main material connected to it, and the Diagonal materials (6) are connected between the connection points, and oblique materials (6) are connected between the connection points of each pole and the main support to the connection point of the main material and the horizontal material. 2. A narrow base angle steel tower for power transmission lines according to claim 1, characterized in that the connection points of the main material (5), the horizontal material (7) and the oblique material (6) are Node (8), the node (8) forms a square diaphragm on the same plane, and the diaphragm divides the tower body (9) into several sections, including the tower corner part (1), the tapered support frame part (2) and a vertical support frame part (3), and several wire installation frames (4) are installed on the vertical support frame part (3). 3. A narrow-base angle steel tower for transmission lines according to claim 1, characterized in that the main material (5), oblique material (6), horizontal material (7) and all wire mounting frames (4) All use angle steel. 4. A narrow-base angle steel tower for transmission lines according to claim 1, 2 or 3, characterized in that, the tapered support frame part includes a main material (5) located on the outside, located on the adjacent The oblique material arranged crosswise between the two main materials, the upper end and the lower end of the conical support frame part are connected with a horizontal material (7) between the two adjacent main material ends, and the main material on the conical support frame part The included angle between the material and the horizontal plane is 92°, each node on the main material (5) is connected by a diagonal material (6) to form a diagonal bracing surface, and the node (8) forms a rectangular prism on the upper and lower sides. 5. A narrow-base angle steel tower for transmission lines according to claim 1, 2 or 3, characterized in that, the vertical support frame part (3) includes a main material (5) arranged on the outside, a The oblique material arranged crosswise between two adjacent main materials, the upper end and the lower end of the vertical support frame part (3) is connected with a horizontal material (7) between the ends of the two adjacent main materials. The included angle between the main material on the support frame part (3) and the horizontal plane is 90°, each node on the main material (5) is connected by a diagonal material (6) to form a diagonal bracing surface, and the nodes (8) form an upper and lower A rectangular hexahedron. 6. A narrow-base angle steel tower for power transmission lines according to claim 4, characterized in that, the vertical support frame part (3) includes a main material (5) arranged on the outside, arranged on two adjacent The oblique materials arranged crosswise between the main materials, the upper end and the lower end of the vertical support frame part (3) are connected with the horizontal material (7) between the two adjacent main material ends, and the vertical support frame part ( 3) The included angle between the main material on the top and the horizontal plane is 90°, each node on the main material (5) is connected by a diagonal material (6) to form a diagonal support surface, and the node (8) forms a hexahedron whose upper and lower sides are rectangular .