Triangular cross-section lattice tower

Abstract

The utility model discloses a triangular section lattice tower, it includes four columns, four groups of inclined braces, two adjacent columns between all have a group of inclined braces, and each group of inclined braces is by a plurality of upper and lower arrangement cross inclined braces constitutes, and each cross inclined brace is by two middle fixed as an organic whole inclined brace pole constitutes, a plurality of cross braces, four reinforcing braces, two adjacent columns between all have a reinforcing brace, four tower foot plates, each tower foot plate horizontal fixed in one column's bottom end surface, and the bottom surface vertical fixed of each tower foot plate is equipped with a plurality of concrete precast piles, and the flange plate of tower top is opened with the slot of four column top insertion in the bottom surface middle part, and the triangular section lattice structure of the triangular section lattice tower by inclined brace, cross brace and reinforcing brace constitutes, compared with traditional quadrilateral section, has higher torsional rigidity and lateral stability under the same material consumption, can more effectively resist complex load.

Description

Technical Field

[0001] This utility model relates to the field of power transmission tower technology, specifically a triangular cross-section lattice tower. Background Technology

[0002] Lattice towers are widely used in power transmission lines, wind turbine support, and communication signal towers due to their advantages such as high structural efficiency, low material consumption, and low wind load. Traditional quadrilateral lattice tower structures are usually composed of columns, cross braces, and diagonal braces connected by welding or bolts. When resisting torsional and lateral loads, they mainly rely on the diagonal bracing system. However, conventional single diagonal braces or simple K-shaped supports sometimes cannot achieve optimal material distribution while ensuring structural stiffness. This is especially true when the tower height is large or the load conditions are complex, such as the huge overturning moment of large wind turbines. This may lead to excessively large component sections or the need to add redundant components, increasing material costs and structural self-weight.

[0003] Furthermore, the connection points between the columns and diagonal braces, and between the diagonal braces and horizontal braces in the traditional design require complex connecting plates or a large amount of on-site welding, which not only increases the requirements for manufacturing precision, but also significantly reduces on-site installation efficiency and extends the construction period.

[0004] Secondly, the current tower foot plates are directly anchored to the cast-in-place concrete foundation. This method has high requirements for foundation treatment and long on-site concrete pouring and curing time. Especially in soft soil foundations or in situations where rapid construction is required, its efficiency and economy are constrained.

[0005] In addition, heavy equipment, such as wind turbine nacelles, is usually installed on the top of the tower. Traditionally, complex flange rings or platform structures are set up on the top of the tower, or additional transition sections are required. This not only increases the structural weight and cost, but may also increase the complexity of installation.

[0006] Therefore, we have made structural improvements to the existing tower to meet the usage requirements.

[0007] To overcome the aforementioned problems, and especially to achieve higher structural efficiency, superior torsional resistance, more convenient prefabricated construction, and more reliable foundation solutions, developing a novel lattice tower structure is of significant engineering importance and application value. The triangular cross-section lattice tower structure proposed in this invention is an innovative design specifically addressing these needs. Utility Model Content

[0008] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a triangular cross-section lattice tower with higher structural efficiency, better torsional resistance, and easier assembly.

[0009] The technical problem to be solved by this utility model is achieved through the following technical solution: a triangular cross-section lattice tower, which includes;

[0010] Four pillars;

[0011] Four sets of diagonal bracing, with one set of diagonal bracing between each pair of adjacent columns. Each set of diagonal bracing consists of several cross diagonal bracing arranged vertically. Each cross diagonal bracing consists of two diagonal bracing rods fixed together in the middle. The two ends of the diagonal bracing rods are respectively fixed to the side walls of the two adjacent columns.

[0012] Several horizontal braces, with one horizontal brace at the top and bottom of each cross brace, and both ends of the horizontal brace are fixedly connected to the ends of the cross brace's diagonal brace.

[0013] Four reinforcing braces, with one reinforcing brace between each pair of adjacent columns. Bolt holes are provided in the middle of the cross brace, the middle of the horizontal brace, and the reinforcing brace of each set of diagonal braces. The reinforcing brace is fixed between the diagonal brace and the horizontal brace by bolt fasteners.

[0014] Four tower foot plates, each horizontally fixed to the bottom surface of one of the columns, and several precast concrete piles vertically fixed to the bottom surface of each tower foot plate;

[0015] The tower top flange plate has a slot in the center of its bottom surface for the tops of four columns to be inserted, and several threaded grooves on its edge.

[0016] The technical problem to be solved by this utility model can also be achieved through the following technical solution: In the triangular cross-section lattice tower described above, the included angle between the two diagonal braces of each cross brace is an acute angle, and a triangular support is formed between it and the column.

[0017] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the triangular cross-section lattice tower described above, wherein the angle between the column and the horizontal plane is 70°~80°.

[0018] The technical problem to be solved by this utility model can also be achieved through the following technical solution: In the triangular cross-section lattice tower described above, the two ends of the diagonal brace of each cross brace are bolted to the side wall of the column.

[0019] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the triangular cross-section lattice tower described above has bolt fastener mounting holes horizontally opened on the side wall of the slot and the top of the column. The tower top flange plate is fixed to the top of the column by bolt fasteners screwed into the bolt fastener mounting holes.

[0020] Compared with the prior art, the beneficial technical effects of this utility model are:

[0021] (1) The triangular cross-section lattice tower is composed of diagonal bracing, horizontal bracing and reinforcing bracing. Compared with the traditional quadrilateral cross-section, it has higher torsional stiffness and lateral stability with the same amount of material, and can more effectively resist complex loads. In addition, the columns are set with an inclination angle of 70°~80°, which further optimizes the structural stress and material distribution. While ensuring the load-bearing capacity, it reduces the overall steel consumption to a certain extent, and reduces material costs and structural self-weight.

[0022] (2) The tower foot plate is connected to the precast concrete pile. This setting can improve the overall stability of the tower. The tower top flange plate is equipped with a slot, which can be directly inserted into the top of the column and fastened with the edge thread groove. This provides an installation interface for heavy equipment such as wind turbine nacelles on the tower top, simplifies the tower top structure, reduces the need for transition sections, and further reduces the installation difficulty and cost. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0024] Figure 2 This is an exploded view of the structure of this utility model.

[0025] Attached reference numerals: 1. Column; 2. Diagonal brace; 3. Horizontal brace; 4. Reinforcing brace; 5. Bolt hole; 6. Tower foot plate; 7. Precast concrete pile; 8. Tower top flange plate; 9. Slot. Detailed Implementation

[0026] The specific technical solutions of this utility model are further described below with reference to the accompanying drawings, so as to enable those skilled in the art to further understand this utility model, without constituting a limitation on its rights.

[0027] Example 1, referring to Figure 1-2 A triangular cross-section lattice tower, comprising:

[0028] Four uprights 1, wherein the angle between the uprights 1 and the horizontal plane is 70°~80°, and the uprights 1 are square rod-shaped uprights 1, and the angle between them and the horizontal plane can be 70°;

[0029] Four sets of diagonal braces, with one set of diagonal braces between each pair of adjacent columns 1. Each set of diagonal braces consists of several vertically arranged cross diagonal braces. Each cross diagonal brace consists of two diagonal bracing rods 2 fixed together in the middle. The diagonal bracing rods 2 are square members. The two ends of the diagonal bracing rods 2 are fixed to the side walls of the two adjacent columns 1 respectively. The included angle between the two diagonal bracing rods 2 of each cross diagonal brace is an acute angle. The angle can be selected according to the usage requirements, for example, 65°~75°. It forms a triangular support with the column 1. The two ends of the diagonal bracing rods 2 of each cross diagonal brace are bolted to the side wall of the column 1.

[0030] Several horizontal braces 3 are provided, with one horizontal brace 3 at the top and bottom of each cross brace. The horizontal brace 3 is formed into a square rod structure. Both ends of the horizontal brace 3 are fixedly connected to the ends of the diagonal brace rod 2 of the cross brace. The purpose of the horizontal brace 3 design is to enhance the structural stability of the diagonal brace and make it stronger under stress.

[0031] Four reinforcing braces 4, one of which is provided between each two adjacent columns 1. The reinforcing braces 4 are vertically arranged and form a square rod structure. Bolt holes 5 are provided in the middle of the cross brace of each group of diagonal braces, the middle of the horizontal brace 3, and the reinforcing brace 4. The reinforcing brace 4 is fixed between the diagonal brace and the horizontal brace 3 by bolt fasteners. The reinforcing brace 4 is used to enhance the structural stability of the cross brace in each group of diagonal braces.

[0032] Four tower foot plates 6 are formed into a square plate structure. Each tower foot plate 6 is horizontally fixed to the bottom surface of one of the columns 1. Several precast concrete piles 7 are vertically fixed on the bottom surface of each tower foot plate 6. The precast concrete piles 7 are square pile structures, and their length can be selected according to the height of the column 1.

[0033] The tower top flange plate 8 is formed into a circular plate structure. A slot 9 is opened in the center of its bottom surface for the top of four columns 1 to be inserted. The slot 9 is a square slot with several threaded grooves on its edge. Bolt fastener mounting holes are opened horizontally on the side wall of the slot 9 and the top of the column 1. The tower top flange plate 8 is fixed to the top of the column 1 by bolt fasteners screwed into the bolt fastener mounting holes. That is to say, the tower top flange plate 8 can be fixed to the top of the column 1 by bolt fasteners.

[0034] In Example 1, the triangular cross-section lattice tower only requires four pile holes to be opened in the construction area to place the precast concrete piles 7 at the bottom of the tower foot plate 6. After the precast concrete piles 7 are completed, the diagonal braces, horizontal braces 3 and reinforcing braces 4 are installed on the column 1 to form the tower. Finally, the tower top flange plate 8 is bolted to the top of the column 1. When the wind turbine tower needs to be installed on the tower top flange plate 8, the bottom flange of the wind turbine tower can be flanged to the top flange using a lifting tool.

Claims

1. A triangular cross-section lattice tower, characterized in that: It includes; Four pillars; Four sets of diagonal bracing, with one set of diagonal bracing between each pair of adjacent columns. Each set of diagonal bracing consists of several cross diagonal bracing arranged vertically. Each cross diagonal bracing consists of two diagonal bracing rods fixed together in the middle. The two ends of the diagonal bracing rods are respectively fixed to the side walls of the two adjacent columns. Several horizontal braces, with one horizontal brace at the top and bottom of each cross brace, and both ends of the horizontal brace are fixedly connected to the ends of the cross brace's diagonal brace. Four reinforcing braces, with one reinforcing brace between each pair of adjacent columns. Bolt holes are provided in the middle of the cross brace, the middle of the horizontal brace, and the reinforcing brace of each set of diagonal braces. The reinforcing brace is fixed between the diagonal brace and the horizontal brace by bolt fasteners. Four tower foot plates, each horizontally fixed to the bottom surface of one of the columns, and several precast concrete piles vertically fixed to the bottom surface of each tower foot plate; The tower top flange plate has a slot in the center of its bottom surface for the tops of four columns to be inserted, and several threaded grooves on its edge.

2. A triangular cross-section lattice tower according to claim 1, characterized in that: The angle between the two diagonal braces of each cross brace is acute, forming a triangular support with the column.

3. A triangular cross-section lattice tower according to claim 1, characterized in that: The angle between the column and the horizontal plane is 70°~80°.

4. A triangular cross-section lattice tower according to claim 1, characterized in that: The two ends of the diagonal brace of each cross brace are bolted to the side wall of the column.

5. A triangular cross-section lattice tower according to claim 1, characterized in that: Bolt fastener mounting holes are horizontally provided on the side wall of the slot and the top of the column. The tower top flange plate is fixed to the top of the column by bolts fasteners screwed into the bolt fastener mounting holes.

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