Metal damper and power transmission tower

Abstract

The utility model relates to a metal damper and a power transmission tower, and relates to the technical field of power transmission tower structure engineering. Comprising an inner arc-shaped metal plate and an outer arc-shaped metal plate which are concentrically arranged, a first connecting piece which is simultaneously connected with one end of the inner arc-shaped metal plate and one end of the outer arc-shaped metal plate, and a second connecting piece which is simultaneously connected with the other end of the inner arc-shaped metal plate and the other end of the outer arc-shaped metal plate, the first connecting piece and the second connecting piece are connected with a node to be subjected to torsion resistance, the inner arc-shaped metal plate and the outer arc-shaped metal plate are concentrically arranged, the relative displacement difference is generated when the node is twisted, the inner arc-shaped metal plate bears larger compression deformation due to the small curvature radius, and the outer arc-shaped metal plate is mainly subjected to tensile deformation due to the large curvature radius. Torsional energy is dissipated synergistically through plastic deformation of metal materials, torsional deformation can be effectively resisted, and breakage of the connecting portion of the power transmission tower is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the transmission tower structure engineering technical field, especially relates to a metal damper and transmission tower. BACKGROUND

[0002] Due to the tension of the conductor under the dynamic load such as wind load, earthquake load, further drive the random torsional deformation of the upper structure such as transmission tower cross arm, curved arm, long-term effect will lead to fatigue damage of structural member, non-recoverable large deformation, connection part fracture and other problems. The traditional transmission tower mainly relies on the torsional stiffness of the tower itself to resist the torsional effect, but this way is often difficult to meet the requirements under extreme load.

[0003] Therefore, in view of the above technical problems, the metal damper and the transmission tower are designed to effectively resist the torsional deformation and avoid the fracture of the connection part of the transmission tower, which is a technical problem to be solved by the person skilled in the art. UTILITY MODEL CONTENT

[0004] In order to solve the above problems, the utility model provides a metal damper and a transmission tower, which effectively resist the torsional deformation and avoid the fracture of the connection part of the transmission tower.

[0005] In order to achieve the above purpose, the utility model provides the following scheme:

[0006] A metal damper, comprising concentrically arranged inner arc-shaped metal plates and outer arc-shaped metal plates, a first connecting piece connecting one end of the inner arc-shaped metal plates and the outer arc-shaped metal plates, and a second connecting piece connecting the other end of the inner arc-shaped metal plates and the outer arc-shaped metal plates, the first connecting piece and the second connecting piece being connected with the node to be resisted.

[0007] Preferably, the inner arc-shaped metal plates comprise an inner arc-shaped outer metal plate, an inner arc-shaped elastic material layer and an inner arc-shaped inner metal plate connected in sequence, and the outer arc-shaped metal plates comprise an outer arc-shaped outer metal plate, an outer arc-shaped elastic material layer and an outer arc-shaped inner metal plate connected in sequence.

[0008] Preferably, the thickness of the inner arc-shaped outer metal plate, the inner arc-shaped inner metal plate, the outer arc-shaped outer metal plate and the outer arc-shaped inner metal plate is 8mm to 12mm, and the thickness of the inner arc-shaped elastic material layer and the outer arc-shaped elastic material layer is 8mm to 12mm.

[0009] Preferably, the inner arc-shaped outer metal plate, the inner arc-shaped inner metal plate, the outer arc-shaped outer metal plate and the outer arc-shaped inner metal plate are Q235 steel plates or Q355 steel plates, and the inner arc-shaped elastic material layer and the outer arc-shaped elastic material layer are rubber layers.

[0010] Preferably, the width of the inner arc-shaped outer metal plate is the same as the width of the inner arc-shaped elastic material layer, and the width of the outer arc-shaped outer metal plate is the same as the width of the outer arc-shaped elastic material layer.

[0011] Preferably, the width of the inner arc-shaped outer metal plate is greater than the width of the inner arc-shaped inner metal plate, and the width of the outer arc-shaped outer metal plate is greater than the width of the inner arc-shaped inner metal plate.

[0012] Preferably, the first connecting piece comprises a first end plate connected to the inner arc-shaped metal plate and the outer arc-shaped metal plate at one end and connected to the to-be-torsion-resistant node at the other end, and a first bolt for fixing the first end plate to the to-be-torsion-resistant node, and the second connecting piece comprises a second end plate connected to the inner arc-shaped metal plate and the outer arc-shaped metal plate at one end and connected to the to-be-torsion-resistant node at the other end, and a second bolt for fixing the second end plate to the to-be-torsion-resistant node.

[0013] The utility model discloses still a kind of power transmission tower, apply above described metal damper, including cross arm and the power transmission tower main body connected with cross arm, the metal damper is arranged on the cross arm and the power transmission tower main body connection node.

[0014] Preferably, 2 to 4 metal dampers are arranged on each connection node of the cross arm and the power transmission tower main body.

[0015] Preferably, the cross arm includes a cross beam and a vertical beam connected to the end of the cross beam, the outer side of the cross beam and the vertical beam is connected to the power transmission tower main body, and the inner side of the cross beam and the vertical beam is provided with the metal damper.

[0016] The utility model has the following technical effects compared with the prior art:

[0017] By arranging the inner arc-shaped metal plate and the outer arc-shaped metal plate concentrically, a relative displacement difference is generated when the node is twisted. The inner arc-shaped metal plate bears greater compressive deformation due to its smaller curvature radius, and the outer arc-shaped metal plate mainly bears tensile deformation due to its larger curvature radius. The two plates cooperatively dissipate torsional energy through plastic deformation of the metal material, effectively resist torsional deformation, and avoid fracture of the connection part of the power transmission tower.

[0018] The inner arc-shaped metal plate and the outer arc-shaped metal plate are provided with an outer metal plate, an elastic material layer, and an inner metal plate. The elastic material layer absorbs torsional energy through shear deformation, and the outer metal plate and the inner metal plate dissipate energy through plastic deformation, forming a composite mechanism of "elastic buffering-plastic energy dissipation". This can improve the energy dissipation capacity and the torsional resistance. Moreover, the multi-layer structure design can disperse the torsional stress to the interfaces of each layer, avoid the risk of fracture caused by local stress concentration of a single metal plate, and prolong the fatigue life. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following embodiments are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 is a schematic diagram of the metal damper and the transmission tower connection structure disclosed by the embodiments of the present application. Figure 1 Figure 1 is a schematic diagram of the metal damper and the transmission tower connection structure disclosed by the embodiments of the present application.

[0021] Figure 1 is a schematic diagram of the metal damper and the transmission tower connection structure disclosed by the embodiments of the present application. Figure 2 Figure 1 is a schematic diagram of the metal damper and the transmission tower connection structure disclosed by the embodiments of the present application.

[0022] Figure 1 is a schematic diagram of the metal damper and the transmission tower connection structure disclosed by the embodiments of the present application. Figure 3 Figure 1 is a schematic diagram of the metal damper and the transmission tower connection structure disclosed by the embodiments of the present application.

[0023] Figure 1 is a schematic diagram of the metal damper and the transmission tower connection structure disclosed by the embodiments of the present application. Figure 4 Figure 1 is a schematic diagram of the metal damper and the transmission tower connection structure disclosed by the embodiments of the present application.

[0024] 1, transmission tower main body; 11, cross beam; 12, vertical beam; 2, metal damper; 21, first bolt; 22, first end plate; 23, second end plate; 24, outer arc-shaped metal plate; 241, outer arc-shaped outer layer metal plate; 242, outer arc-shaped elastic material layer; 243, outer arc-shaped inner layer metal plate; 25, inner arc-shaped metal plate; 251, inner arc-shaped outer layer metal plate; 252, inner arc-shaped elastic material layer; 253, inner arc-shaped inner layer metal plate; 3, cross arm. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0026] The purpose of the present application is to provide a metal damper and a transmission tower, which effectively resist torsional deformation and avoid the fracture of the transmission tower connection part.

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail in combination with the drawings and specific embodiments.

[0028] Reference Figures 1-2The metal damper disclosed in the embodiment of the utility model at least includes concentrically arranged inner arc metal plate 25 and outer arc metal plate 24, one end of inner arc metal plate 25 and outer arc metal plate 24 is connected with first connecting piece simultaneously, the other end of inner arc metal plate 25 and outer arc metal plate 24 is connected with second connecting piece simultaneously, first connecting piece and second connecting piece are connected with the node to be resisted to twist on the power transmission tower, when installing, the center position of inner arc metal plate 25 and outer arc is set to the node to be resisted to twist, when the node to be resisted to twist twists and deforms, through the concentric arrangement of inner arc metal plate 25 and outer arc metal plate 24, the relative displacement difference is generated when the node twists, inner arc metal plate 25 bears greater compression deformation because of the small curvature radius, outer arc metal plate 24 is mainly subjected to tensile deformation because of the large curvature radius, the torsional energy is dissipated through the plastic deformation of metal material of both, can effectively resist the twist deformation, avoid the fracture of the connecting part of power transmission tower.

[0029] It should be noted that the node to be resisted to twist refers to the connecting point of each structure on the power transmission tower, such as the connecting node of cross arm 3 and curved wall or the connecting node of cross arm 3 and horizontal spacer member on the power transmission tower.

[0030] Reference Figures 1-3 As an implementation manner, inner arc metal plate 25 includes inner arc outer metal plate 251, inner arc elastic material layer 252 and inner arc inner metal plate 253 connected in sequence, outer arc metal plate 24 includes outer arc outer metal plate 241, outer arc elastic material layer 242 and outer arc inner metal plate 243 connected in sequence, inner arc metal plate 25 and outer arc metal plate 24 are provided with outer metal plate, elastic material layer and inner metal plate, the elastic material layer absorbs torsional energy through shear deformation, and the outer metal plate and the inner metal plate dissipate energy through plastic deformation, forming a composite mechanism of "elastic buffer-plastic energy dissipation", which can improve the energy dissipation capacity and further improve the torsional resistance, and the torsional stress can be dispersed to each layer interface through the multi-layer structure design, avoiding the risk of fracture caused by local stress concentration of single metal plate and prolonging the fatigue life.

[0031] It should be noted that inner arc outer metal plate 251, inner arc inner metal plate 253 and inner arc elastic material layer 252 can be adhesively arranged, and outer arc outer metal plate 241, outer arc inner metal plate 243 and outer arc elastic material layer 242 can be adhesively arranged.

[0032] Reference Figures 1-4 As an implementation manner, the thickness of inner arc outer metal plate 251, inner arc inner metal plate 253, outer arc outer metal plate 241 and outer arc inner metal plate 243 is 8mm to 12mm, and the thickness of inner arc elastic material layer 252 and outer arc elastic material layer 242 is 8mm to 12mm.

[0033] With reference to Figures 1-4 As an implementation form, the inner-arc outer metal plate 251, the inner-arc inner metal plate 253, the outer-arc outer metal plate 241 and the outer-arc inner metal plate 243 are Q235 steel plates or Q355 steel plates, and the inner-arc elastic material layer 252 and the outer-arc elastic material layer 242 are rubber layers, specifically carbon black filled rubber layers.

[0034] With reference to Figures 1-4 As an implementation form, the width of the inner-arc outer metal plate 251 is the same as the width of the inner-arc elastic material layer 252, and the width of the outer-arc outer metal plate 241 is the same as the width of the outer-arc elastic material layer 242,

[0035] The outer metal plate and the elastic material layer are designed to have the same width to ensure that the stress is uniformly distributed along the interface, avoid local stress concentration caused by width difference, improve the interlayer bonding strength, and keep the outer metal plate and the elastic material layer deformed synchronously under load. The outer metal plate dissipates energy through plastic deformation, and the elastic material layer dissipates energy through molecular chain slip, forming a double energy dissipation mechanism and improving the torsional capacity (here, the outer metal plate refers to the outer-arc outer metal plate 241 and the inner-arc outer metal plate 251, and the elastic material layer refers to the outer-arc elastic material layer 242 and the inner-arc elastic material layer 252).

[0036] With reference to Figures 1-4 As an implementation form, the width of the inner-arc outer metal plate 251 is greater than the width of the inner-arc inner metal plate 253, and the width of the outer-arc outer metal plate 241 is greater than the width of the outer-arc inner metal plate 253. The outer metal plate and the elastic material layer form a core energy dissipation unit and bear the main torsional deformation. The elastic material layer and the outer metal plate are designed to have the same width to maximize the effective shear area. The inner metal plate serves as an auxiliary energy dissipation layer and supplements energy dissipation through local plastic deformation to delay overall failure. That is, when the torsional deformation of the to-be-torsionally-resistant node is in the small displacement stage, the energy is mainly dissipated through the shear deformation of the elastic material layer; when the torsional deformation of the to-be-torsionally-resistant node is in the medium displacement stage, the inner metal plate starts to contact and provide additional stiffness; when the torsional deformation of the to-be-torsionally-resistant node is in the large displacement stage, the outer metal plate works to further provide torsional stiffness (here, the outer metal plate refers to the outer-arc outer metal plate 241 and the inner-arc outer metal plate 251, and the elastic material layer refers to the outer-arc elastic material layer 242 and the inner-arc elastic material layer 252).

[0037] With reference to Figures 1-4As an implementation form, the first connecting piece comprises a first end plate 22 and a first bolt 21, one side of the first end plate 22 is connected with the inner arc-shaped metal plate 25 and the outer arc-shaped metal plate 24, the other side of the first end plate 22 is connected with the to-be-torsion-resisting joint, the first bolt 21 is used for fixing the first end plate 22 to the to-be-torsion-resisting joint, the second connecting piece comprises a second end plate 23 and a first bolt 21, one side of the second end plate 23 is connected with the inner arc-shaped metal plate 25 and the outer arc-shaped metal plate 24, the other side of the second end plate 23 is connected with the to-be-torsion-resisting joint, the second bolt is used for fixing the second end plate 23 to the to-be-torsion-resisting joint, and the inner arc-shaped metal plate 25 and the outer arc-shaped metal plate 24 and the to-be-torsion-resisting connecting piece can be fixed firmly by arranging the first end plate 22, the second end plate 23, the first bolt 21 and the second bolt.

[0038] It should be noted that the first bolt 21 and the second bolt are high-strength M24-8.8 bolts.

[0039] With reference to Figures 1-4 The utility model also discloses a power transmission tower which applies the metal damper 2, comprising a cross arm 3 and a power transmission tower body 1 connected with the cross arm 3, and the metal damper 2 is arranged on the connecting joint of the cross arm 3 and the power transmission tower body 1, the torsional deformation of the connecting joint can be effectively resisted by arranging the metal damper 2 on the connecting joint of the cross arm 3 and the power transmission tower body 1, the structure is simple, the installation is convenient, the original function of the power transmission tower is not affected, and the metal plate parameters can be adjusted according to the torsion resistance requirement of different power transmission towers.

[0040] With reference to Figures 1-4 As an implementation form, 2 to 4 metal dampers 2 are arranged on each connecting joint of the cross arm 3 and the power transmission tower body 1, and the torsional deformation resistance of the power transmission tower can be further improved.

[0041] With reference to Figures 1-4 As an implementation form, the cross arm 3 comprises a cross beam 11 and a vertical beam 12 connected with the end of the cross beam 11, the outer side of the cross beam 11 and the vertical beam 12 is connected with the power transmission tower body 1, the metal damper 2 is arranged on the inner side of the cross beam 11 and the vertical beam 12, specifically, the inner side of the cross beam 11 and the vertical beam 12 is connected with the first end plate 22 and the second end plate 23 respectively, and the arc-shaped surface of the inner arc-shaped metal plate 25 and the outer arc-shaped metal plate 24 is perpendicular to the adhering surface of the first end plate 22 and the second end plate 23.

[0042] The adaptive changes according to actual requirements are all within the protection scope of the utility model.

[0043] It should be noted that for those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A metal damper characterized by, The metal damper comprises an inner arc-shaped metal plate and an outer arc-shaped metal plate arranged concentrically, a first connecting piece connecting one end of the inner arc-shaped metal plate and the outer arc-shaped metal plate, and a second connecting piece connecting the other end of the inner arc-shaped metal plate and the outer arc-shaped metal plate, and the first connecting piece and the second connecting piece are connected with a node to be torsion-resistant.

2. The metal damper of claim 1, wherein, The inner arc-shaped metal plate comprises an inner arc-shaped outer metal plate, an inner arc-shaped elastic material layer and an inner arc-shaped inner metal plate connected in sequence, and the outer arc-shaped metal plate comprises an outer arc-shaped outer metal plate, an outer arc-shaped elastic material layer and an outer arc-shaped inner metal plate connected in sequence.

3. The metal damper of claim 2, wherein, The thickness of the inner arc-shaped outer metal plate, the inner arc-shaped inner metal plate, the outer arc-shaped outer metal plate and the outer arc-shaped inner metal plate is 8mm to 12mm, and the thickness of the inner arc-shaped elastic material layer and the outer arc-shaped elastic material layer is 8mm to 12mm.

4. The metal damper of claim 2, wherein, The inner arc-shaped outer metal plate, the inner arc-shaped inner metal plate, the outer arc-shaped outer metal plate and the outer arc-shaped inner metal plate are Q235 steel plates or Q355 steel plates, and the inner arc-shaped elastic material layer and the outer arc-shaped elastic material layer are rubber layers.

5. The metal damper of claim 2, wherein, The width of the inner arc-shaped outer metal plate is the same as the width of the inner arc-shaped elastic material layer, and the width of the outer arc-shaped outer metal plate is the same as the width of the outer arc-shaped elastic material layer.

6. The metal damper of claim 5, wherein, The width of the inner arc-shaped outer metal plate is greater than the width of the inner arc-shaped inner metal plate, and the width of the outer arc-shaped outer metal plate is greater than the width of the inner arc-shaped inner metal plate.

7. The metal damper of claim 1, wherein, The first connecting piece comprises a first end plate connected with the inner arc-shaped metal plate and the outer arc-shaped metal plate at one end and connected with the node to be torsion-resistant at the other end, and a first bolt for fixing the first end plate to the node to be torsion-resistant, and the second connecting piece comprises a second end plate connected with the inner arc-shaped metal plate and the outer arc-shaped metal plate at one end and connected with the node to be torsion-resistant at the other end, and a second bolt for fixing the second end plate to the node to be torsion-resistant.

8. A power transmission tower characterized by, The metal damper is applied to a power transmission tower body and a cross arm connected with the power transmission tower body, and the metal damper is arranged at a connecting node of the cross arm and the power transmission tower body.

9. The power transmission tower of claim 8, wherein, Two to four metal dampers are arranged at each connecting node of the cross arm and the power transmission tower body.

10. The power transmission tower of claim 8, wherein, The cross arm comprises a horizontal beam and a vertical beam connected with the ends of the horizontal beam, the outer side surfaces of the horizontal beam and the vertical beam are connected with the power transmission tower body, and the inner side surfaces of the horizontal beam and the vertical beam are provided with the metal dampers.

Images