CN216306132U

CN216306132U - Coated lattice hollow steel ball

Info

Publication number: CN216306132U
Application number: CN202123114614.7U
Authority: CN
Inventors: 彭金柱
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-04-15
Anticipated expiration: 2031-12-13

Abstract

The utility model belongs to the technical field of steel balls for wind driven generator towers, and particularly relates to a coated lattice hollow steel ball, which aims at ensuring that the strength and rigidity of a complete hollow steel ball are ensured by increasing the wall thickness of the steel ball, so that the overall weight is increased, the overall gravity center of a tower is moved upwards, the overall stability is poor, and if a thin hollow ball is selected, the strength and rigidity of the hollow steel ball are insufficient, and the catastrophic problems and risks of easy deformation and instability exist. In order to solve the problems, the following solutions are proposed, which comprise a hollow steel ball body, wherein the hollow steel ball body comprises an upper hemispherical shell and a lower hemispherical shell; a 'fancy lattice sphere'. The improvement greatly enhances the rigidity and the strength of the hollow steel ball, and provides sufficient conditions for optimizing the design of the tower and improving the safety and the practicability of the tower. The tower frame is simple in structure, simple and convenient in production and processing technology, capable of using lower-grade steel, saving cost and improving economy and safety of the tower frame.

Description

Coated lattice hollow steel ball

Technical Field

The utility model relates to the technical field of steel balls for wind driven generator towers, in particular to a coated latticed hollow steel ball.

Background

Because our country needs to achieve the great goal of "carbon peak and carbon neutralization". The proportion of Chinese wind power in power production needs to be greatly improved, and because high-quality resources of wind power generation of our country are basically distributed in the northwest provinces of China; and the center of power consumption is in the southeast provinces of our country. Large-scale, ultra-long distance onshore wind power transmission is the basic wind power utilization mode of our country at present. However, the technical problem and the economic problem caused by large-scale long-distance wind power transmission greatly disturb and restrict the development backrush of wind power generation in our country. The state proposes that the rapid development of distributed wind power generation is a good strategy for effectively solving the problems. Large-scale wind power generation is developed on the spot in southeast provinces, and various restriction factors are also provided, such as low annual average wind speed, limitation of land use, high safety factor requirement of the wind power generator and the like. Thus, an ultra-high tower (height to better wind speed); the wind turbine with ultra-large capacity (advanced technology, good economical efficiency and small occupied area of kilowatt unit) is a necessary choice for large-scale development of distributed wind power in southeast provinces.

Because road transportation has certain restrictions on the size of the tower, the traditional conical steel tower can not meet new requirements. For this reason, solutions for ultra-high and ultra-large towers are sought. In the section steel, the tower formed by the steel pipe can best meet the requirements of economy, safety, economy of transportation and convenience of the ultra-large ultra-high tower. The node of the steel pipe tower has many options, such as welding, flange connection and steel ball connection. The steel ball is considered to be the most ideal node of the hollow steel ball. The hollow steel ball tower nodes can provide optimal 'foot-falling point' positions for connecting pipes in all directions of the tower; the hollow steel ball is relatively light in weight, so that steel is saved, and the tower can be helped to reduce the center of gravity of the whole structure.

However, the strength and rigidity of the complete hollow steel ball need to be ensured by increasing the wall thickness of the steel ball, so that the overall weight is increased, the center of gravity of the tower is moved upwards, and the overall stability is poor. If a thinner hollow sphere is selected, the overall strength and rigidity is insufficient, and the hollow sphere is easily deformed and damaged, which can cause disastrous results. To this end, we propose a coated lattice hollow steel ball to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that the strength and rigidity of a complete hollow steel ball are ensured by increasing the wall thickness of the steel ball, the overall weight is increased, the center of gravity of a tower is moved upwards, and the whole is unstable. If a thin hollow ball is selected, the strength and rigidity of the ball body are not enough, and the ball body has the defects of easy deformation and damage, so that the solution of the coated lattice hollow steel ball is provided.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the coated lattice hollow steel ball comprises a hollow steel ball body and is characterized in that the hollow steel ball body comprises an upper hemispherical shell and a lower hemispherical shell, and fancy lattice spheres are arranged inside the upper hemispherical shell and the lower hemispherical shell and comprise a circular plate, two first semi-circular plates, four quarter-circular plates and eight equilateral regular triangular plates;

two first semi-circular plates are vertically welded on two sides of the circular plate, four quarter circles are vertically welded at the parting line of the circular plate and the two first semi-circular plates respectively, and eight equilateral regular triangular plates are evenly and symmetrically welded in a space defined by the four quarter circles, the circular plate and the two first semi-circular plates

Preferably, four welding holes are uniformly formed in the outer sides of the upper hemispherical shell and the lower hemispherical shell respectively.

Preferably, the welding hole is formed in the hollow steel ball body and matched with the first half round plate and the quarter round plate.

Preferably, the welding hole is rotationally symmetrical in center.

Preferably, the circular plate is welded at the joint position of the upper hemispherical shell and the lower hemispherical shell.

Preferably, the fancy lattice sphere is XYZ three-axis rotational symmetric.

Compared with the prior art, the utility model has the advantages that:

the scheme utilizes a welding mode to weld the fancy lattice sphere formed by the circular plate, the two first half circular plates, the four quarter circular plates and the eight equilateral regular triangle plates in the hollow steel ball body, the inner part and the ball surface of the hollow steel ball body are eight equal parts, and the strength and the rigidity of each part are greatly enhanced,

the reinforced hollow steel ball in the scheme has the obvious advantages of light weight, high strength and rigidity and strong supporting force compared with the common hollow steel ball. The steel ball node used as a tower frame of the wind driven generator has extremely high supporting strength and high torsional strength; compared with a solid ball or a thicker hollow steel ball, the steel ball has the advantage of light weight, and can reduce the gravity center of the tower and increase the integral stability of the motor tower when being used as the steel ball for the wind driven generator tower;

the tower frame is simple in structure, simple and convenient in production and processing technology, capable of using lower-grade steel, saving cost, improving economical efficiency and safety of the tower frame, and has the advantages of light weight, high strength and rigidity and strong supporting force.

Drawings

FIG. 1 is a schematic structural diagram of a coated lattice hollow steel ball proposed by the present invention;

FIG. 2 is a schematic diagram of a partial explosion structure of the coated lattice hollow steel ball proposed by the present invention;

FIG. 3 is a welding drawing of the utility model with the triangular blocks removed from the fancy lattice sphere;

FIG. 4 shows a welded tessellated sphere according to the present invention;

fig. 5 is a top view of the upper hemispherical shell and the bonding hole according to the present invention.

In the figure: 1. a hollow steel ball body; 11. an upper hemispherical shell; 12. a lower hemispherical shell; 13. a circular plate; 14. a first semicircular circular plate; 15. a quarter circular plate; 16. welding the hole; 17. equilateral regular triangle.

Detailed Description

The technical solutions in the embodiments will be described clearly and completely with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments, but not all embodiments.

Example 1

Referring to fig. 1-5, a coated lattice hollow steel ball comprises a hollow steel ball body 1, the hollow steel ball body 1 comprises an upper hemispherical shell 11 and a lower hemispherical shell 12, a fancy lattice sphere is arranged inside the upper hemispherical shell 11 and the lower hemispherical shell 12, the fancy lattice sphere comprises a circular plate 13, two first semicircular plates 14, four quarter circular plates 15 and eight equilateral regular triangular plates 17, the two first semicircular plates 14 are vertically welded on two sides of the circular plate 13, the four quarter circular plates 15 are vertically welded with the circular plate 13 and the two first semicircular plates 14, the interior of the hollow steel ball body is divided into eight equal parts, four welding holes are uniformly arranged on the outer sides of the upper hemispherical shell and the lower hemispherical shell, the centers of the welding holes 16 are rotationally symmetrical, the welding holes are arranged at the positions where the hollow steel ball body 1 contacts with the circular rib plates, the circular plate 13 is welded at the joint position of the upper hemispherical shell 11 and the lower hemispherical shell 12, eight equilateral regular triangle boards 17 are welded on two sides of the circular board 13 in equal proportion, one side of the equilateral regular triangle board 17 is welded with the circular board 13, the other two sides of the equilateral regular triangle board 17 are respectively welded with the first half circular board 14 and the quarter circular board 15, the equilateral regular triangle board 17 is an equilateral triangle, and the fancy lattice sphere XYZ three-axis rotational symmetry is realized.

The circular plate 13, the two first semicircular plates 14, and the four quarter circular plates 15 have the same thickness, and the diameter of the welding hole 16 is the same as the thickness of the circular plate 13.

Specifically, the method comprises the following steps: firstly, vertically welding a first semicircular plate 14 in the direction A to the central symmetrical position of the bottom side of the circular plate 13 by utilizing a welding mode, then welding two quarter circular plates 15 in the direction A to two sides of the first semicircular plate 14 in a central symmetrical mode, simultaneously welding the two quarter circular plates 15 with the bottom of the circular plate 13, taking eight equilateral regular triangular plates 17, welding one side of the equilateral regular triangular plates 17 on the circular plate 13, and respectively welding the other two sides of the equilateral regular triangular plates 17 with the first semicircular plate 14 and the quarter circular plate 15; placing a complete fancy lattice sphere in a lower hemispherical shell 12, then covering an upper hemispherical shell 11, welding the upper hemispherical shell 11, the lower hemispherical shell 12 and the outer edge part of a circular plate 13 at the joint of the upper hemispherical shell 11 and the lower hemispherical shell 12 circumferentially, and then welding a first semicircle 14 and two quarter circles 15 with the lower hemispherical shell 12 by using four welding holes 16 on the lower hemispherical shell 12; and in the same way, the upper hemispherical shell and the outer edges of the circular plates are welded through welding holes. Finally becoming a whole.

Aiming at the disastrous problems that the strength and the rigidity of a complete hollow steel ball are ensured by increasing the wall thickness of the steel ball, the overall weight is increased, the overall gravity center of a tower is moved upwards, the overall stability is poor, and if a thin hollow ball is selected, the strength and the rigidity of the hollow steel ball are insufficient, and the hollow steel ball is easy to deform and destabilize. In order to solve such problems, a solution is proposed which includes a hollow steel ball body, and each rib plate is fixed to the spherical surface by punching and filling welding. The improvement has the advantages that the inner part and the spherical surface of the hollow steel ball body are eight equal parts, so that the rigidity and the strength of the hollow steel ball are greatly enhanced, and sufficient conditions are provided for optimizing the design of the tower and improving the safety and the practicability of the tower. The tower frame is simple in structure, simple and convenient in production and processing technology, can use lower-grade steel, saves cost and improves the economy and safety of the tower frame.

The above descriptions are only preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the utility model concepts of the present invention are equivalent to, replaced or changed.

Claims

1. The coated lattice hollow steel ball comprises a hollow steel ball body (1) and is characterized in that the hollow steel ball body (1) comprises an upper hemispherical shell (11) and a lower hemispherical shell (12), and fancy lattice spheres are arranged inside the upper hemispherical shell (11) and the lower hemispherical shell (12) and comprise a circular plate (13), two first half circular plates (14), four quarter circular plates (15) and eight equilateral regular triangular plates (17);

the two first semi-circular plates (14) are vertically welded on two sides of the circular plate (13), the four quarter circles (15) are respectively and vertically welded at the parting lines of the circular plate (13) and the two first semi-circular plates (14), and the eight equilateral regular triangle plates (17) are uniformly and symmetrically welded in a space surrounded by the four quarter circles (15), the circular plate (13) and the two first semi-circular plates (14).

2. The coated latticed hollow steel ball as claimed in claim 1, wherein four welding holes (16) are uniformly formed on the outer sides of said upper hemispherical shell (11) and said lower hemispherical shell (12), respectively.

3. The coated latticed hollow steel ball according to claim 2, characterized in that said welding hole (16) opens in the hollow steel ball body (1) and is adapted to the first semicircular plate (14) and the quarter-circular plate (15).

4. The coated latticed hollow steel ball as claimed in claim 3, wherein said welding holes (16) are centrorotationally symmetric.

5. The coated lattice hollow steel ball according to claim 1, characterized in that the circular plate (13) is welded at the joint of the upper hemispherical shell (11) and the lower hemispherical shell (12).

6. The coated lattice hollow steel ball as claimed in claim 1, wherein the fancy lattice sphere is XYZ three-axis rotational symmetry.