A buckling-resistant bracing main member reinforcement and cooperative vibration reduction and energy dissipation device for a transmission tower

Abstract

The present invention discloses a transmission tower anti-buckling support main material reinforcement and coordinated vibration reduction and energy dissipation device, which relates to the technical field of transmission tower reinforcement. It solves the problems of poor reinforcement effect and high maintenance cost of existing transmission tower main material reinforcement schemes, and improves the reinforcement effect. The specific scheme is as follows: it includes a reinforcement main material that is centrally symmetrical with the existing main material, and a plurality of coaxially arranged cross plates are provided between the existing main material and the reinforcement main material. The existing main material and the reinforcement main material are respectively arranged at two diagonal corners of the cross plate. The reinforcement main material and the cross plate are bolted together, and a clamp is provided on the outer side of the existing main material. The clamp is bolted to the cross plate to clamp the existing main material. At least two stiffening ribs are fixedly installed at the other two diagonal corners of the cross plate. The stiffening ribs on two adjacent cross plates on the same side are connected by a connecting rod containing a first damper. The connecting rod is provided with a plurality of vibration reduction and energy dissipation mechanisms connected to the side walls of the existing main material and the reinforcement main material.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission tower reinforcement, and in particular to a transmission tower anti-buckling support main material reinforcement and coordinated vibration reduction and energy dissipation device. Background Art

[0002] The stock of old transmission angle steel towers is large, and due to investment constraints, all cannot be demolished and rebuilt. Furthermore, most of the old lines are critical, carrying the power supply of important loads, making power outages difficult. Frequent severe and extreme weather, ice coating on the lines, and wind-driven vibrations pose significant safety risks to the operation of transmission towers. Reinforcement of transmission towers is urgently needed to improve the safety and reliability of existing high-voltage transmission lines.

[0003] Existing reinforcement solutions for the main materials of transmission tower anti-buckling supports mostly use reinforced steel plates for reinforcement. When fixing the steel plates, they need to be fixed to the existing transmission tower main materials using bolts or welding, causing secondary damage to the transmission tower main materials. Moreover, the current reinforcement solutions only play a reinforcement role and do not involve the function of vibration reduction and energy consumption. The reinforcement and vibration reduction effects are poor, and the service life of the steel plates used for reinforcement is limited, which greatly increases maintenance costs. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a transmission tower anti-buckling support main material reinforcement and coordinated vibration reduction and energy dissipation device, in which the existing main material is reinforced by the reinforced main material, and the reinforced main material and the existing main material are fixed by a cross plate and a clamp. The reinforced main material and the cross plate, as well as the cross plate and the clamp are connected by bolts, and there is no need to weld or punch the existing main material, thereby ensuring the reinforcement effect. In addition, the arrangement of the first damper and the vibration reduction and energy dissipation mechanism realizes multi-angle vibration reduction and energy dissipation, effectively avoiding damage to the existing main material and the reinforced main material due to vibration and distortion, thereby increasing the service life of the reinforced main material, and solving the problems of poor reinforcement effect and high maintenance cost of the existing transmission tower main material reinforcement scheme.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a transmission tower anti-buckling support main material reinforcement and coordinated vibration reduction and energy dissipation device, including a reinforcement main material that is centrally symmetrical with an existing main material, a plurality of coaxially arranged cross plates are provided between the existing main material and the reinforcement main material, the existing main material and the reinforcement main material are respectively arranged at two diagonal corners of the cross plate, the reinforcement main material and the cross plate are bolted together, a clamp is provided on the outside of the existing main material, the clamp and the cross plate are bolted together to clamp the existing main material, at least two stiffening ribs are fixedly installed at the other two diagonal corners of the cross plate, the stiffening ribs on two adjacent cross plates on the same side are connected by a connecting rod containing a first damper, and the connecting rod is provided with a plurality of vibration reduction and energy dissipation mechanisms connected to the side walls of the existing main material and the reinforcement main material.

[0007] As a further implementation method, the connecting rod is arranged along the length direction of the existing main material, and a plurality of vibration-damping and energy-absorbing mechanisms are arranged on the connecting rod at intervals along the length direction thereof.

[0008] As a further implementation, the connecting rod is composed of a plurality of coaxially arranged rod bodies and a first damper, and two adjacent rod bodies are connected via a first damper and a vibration reduction and energy dissipation mechanism.

[0009] As a further implementation, the first damper is composed of a spring and circular pads fixed at both ends of the spring, the circular pads are fixedly connected to the ends of the adjacent rods, and the diameter of the circular pads is the same as that of the rods and they are coaxially arranged.

[0010] As a further implementation method, the vibration reduction and energy dissipation mechanism consists of a sleeve and two second dampers installed on the outer wall of the sleeve. The two ends of the sleeve are correspondingly sleeved on the ends of two adjacent rods. The first damper is located inside the sleeve, and the two second dampers are correspondingly connected to the adjacent existing main material and reinforced main material side walls.

[0011] As a further implementation, the length of the sleeve is greater than the distance between two adjacent rods.

[0012] As a further implementation, the axes of the two second dampers on the sleeve are perpendicular to the axis of the connecting rod, the two second dampers are perpendicular to each other, the angle of one second damper is fixed, and the angle of the other second damper is adjustable.

[0013] As a further implementation method, the second damper is arranged in a threaded steel pipe, the second damper is connected to the sleeve through the threaded steel pipe, and the telescopic rod of the second damper extends outward from the threaded steel pipe and is connected to the adjacent existing main material / reinforced main material side wall.

[0014] As a further implementation method, positioning tubes are fixedly installed on the side walls of the existing main material and the reinforced main material, and the ends of the telescopic rods are inserted into the positioning tubes.

[0015] As a further implementation method, the sleeve is composed of two butted semicircular steel pipes, and a clamp is provided at each end of the sleeve and fixed by bolts.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) The present invention uses a reinforcing main material to reinforce the existing main material. The reinforcing main material and the existing main material are fixed by a cross plate and a clamp. The reinforcing main material and the cross plate, as well as the cross plate and the clamp, are connected by bolts. There is no need to weld or punch the existing main material, thereby ensuring the reinforcement effect and avoiding secondary damage to the existing main material. The setting of the first damper and the vibration reduction and energy dissipation mechanism realizes multi-angle vibration reduction and energy dissipation, effectively avoiding damage to the existing main material and the reinforced main material caused by vibration and distortion, ensuring the reinforcement effect, and at the same time increasing the service life of the reinforced main material, reducing the replacement frequency of the reinforced main material, and reducing maintenance costs.

[0018] (2) The length of the sleeve of the present invention is greater than the distance between the two adjacent rods, which effectively limits the positional relationship between the two adjacent rods, ensures the coaxiality of the two adjacent rods, and further ensures the vibration reduction and energy dissipation effects of the first damper.

[0019] (3) The two second dampers on the sleeve of the present invention have one fixed angle and the other adjustable angle. The second damper with a fixed angle is convenient for positioning during installation and ensures installation accuracy. Since the working space between the connecting rod and the adjacent main material is small after installation, the angle-adjustable setting facilitates the overall installation and adjustment of the vibration reduction and energy dissipation mechanism.

[0020] (4) The arrangement of the positioning cylinder of the present invention effectively ensures the connection between the second damper and the existing main material and the reinforced main material, thereby ensuring the transmission of vibration, so that the second damper can fully exert its vibration reduction and energy consumption effect.

[0021] (5) The sleeve of the present invention is composed of two butt-jointed semicircular steel pipes, which facilitates the installation of the sleeve. The first damper does not need to be welded on site, and the connecting rod can be prefabricated in the factory, which greatly simplifies the construction steps, reduces the construction difficulty, and improves the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of a transmission tower buckling-restrained brace main material reinforcement and coordinated vibration reduction and energy dissipation device according to one or more embodiments of the present invention;

[0024] Figure 2This is a schematic front view of the structure of a transmission tower buckling-restrained brace main material reinforcement and coordinated vibration reduction and energy dissipation device according to one or more embodiments of the present invention;

[0025] Figure 3 It is a schematic top view of the structure of a transmission tower buckling-restrained brace main material reinforcement and coordinated vibration reduction and energy dissipation device according to one or more embodiments of the present invention;

[0026] Figure 4 It is a partially enlarged structural schematic diagram of a transmission tower buckling-restrained brace main material reinforcement and coordinated vibration reduction and energy dissipation device according to one or more embodiments of the present invention;

[0027] Figure 5 is a partially enlarged structural schematic diagram of a vibration reduction and energy dissipation mechanism according to one or more embodiments of the present invention;

[0028] Figure 6 is a schematic assembly diagram of a vibration reduction and energy dissipation mechanism according to one or more embodiments of the present invention;

[0029] In the figure: the distances or sizes between parts are exaggerated to show the positions of the parts, and the diagram is for illustration only;

[0030] Among them, 1. Existing main materials; 2. Reinforced main materials; 3. Clamps; 4. Cross plates; 5. Stiffening ribs; 6. Bolts; 7. Connecting rods; 7.1. Rod body; 7.2. First damper; 8. Vibration reduction and energy dissipation mechanism; 8.1. Positioning cylinder; 8.2. Threaded steel pipe; 8.3. First connecting piece; 8.4. Screw; 8.5. Nut; 8.6. Second connecting piece; 8.7. Sleeve; 8.8. Hoop; 8.9. Second damper. DETAILED DESCRIPTION

[0031] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0032] As introduced in the background technology, the existing reinforcement schemes for the main materials of the anti-buckling support of transmission towers mostly use reinforcing steel plates for reinforcement. When fixing the steel plates, it is necessary to use bolt connections or welding to fix the steel plates to the existing main materials of the transmission tower, causing secondary damage to the main materials of the transmission tower. In addition, the current reinforcement schemes only play a role of reinforcement and do not involve the function of vibration reduction and energy consumption. The reinforcement and vibration reduction effects are poor, and the service life of the steel plates used for reinforcement is limited, which greatly increases the maintenance cost. In order to solve the above technical problems, the present invention proposes a transmission tower anti-buckling support main material reinforcement and coordinated vibration reduction and energy consumption device.

[0033] Example 1

[0034] In a typical embodiment of the present invention, Figures 1-6 As shown, a transmission tower anti-buckling support main material reinforcement and coordinated vibration reduction and energy dissipation device is proposed, including a reinforcement main material 2 with the same cross-sectional size as the existing main material 1, a clamp 3, a cross plate 4, a stiffening rib 5 and a vibration reduction and energy dissipation mechanism 8.

[0035] Specific as Figure 3 As shown, the cross section of the reinforcement main material 2 is L-shaped, and the reinforcement main material 2 and the existing main material 1 are arranged in a central symmetrical manner. The cross plate 4 is arranged between the existing main material 1 and the reinforcement main material 2. At least two cross plates 4 are provided and are coaxially arranged for connecting the existing main material 1 and the reinforcement main material 2; the cross section of the clamp 3 is L-shaped, and the clamp 3 is arranged on the outside of the existing main material 1, that is, the existing main material 1 is located between the cross plate 4 and the clamp 3, and the reinforcement main material 2 and the cross plate 4, as well as the cross plate 4 and the clamp 3, are fixedly connected by bolts to achieve reinforcement of the existing main material 1;

[0036] like Figure 4 As shown, the cross-section of the cross-plate 4 is cross-shaped, and the thickness of the cross-plate 4 is the same as the thickness of the clamp 3. The two diagonal corners on the cross-plate 4 are respectively provided with the existing main material 1 and the reinforcement main material 2, that is, in the two diagonal corners, the existing main material 1 is provided at one corner, and the reinforcement main material 2 is provided at the other corner, wherein the existing main material 1 is fixed by the clamp 3, the clamp 3 and the cross-plate 4 are fixedly connected by bolts 6, and the reinforcement main material 2 is fixedly connected to the cross-plate 4 by bolts 6;

[0037] At least two stiffening ribs 5 are fixedly installed at the other two diagonal parts of the cross plate 4. The stiffening ribs 5 are triangular plate structures that match the cross plate 4. The thickness is not more than 10 mm. They are fixedly connected to the cross plate 4 by welding. On the one hand, they are used to increase the overall strength. In the case of torsional damage of the transmission tower in actual engineering, the setting of the stiffening ribs 5 effectively suppresses the torsional damage of the main material of the transmission tower, and at the same time plays the effect of supporting the entire clamp 3, realizing secondary reinforcement. On the other hand, they are used for the installation of the vibration reduction and energy dissipation mechanism 8, that is, a number of vibration reduction and energy dissipation mechanisms 8 are provided at the two diagonal parts of the cross plate 4 where the stiffening ribs 5 are provided.

[0038] It is understandable that the length, installation position and quantity of the reinforcement main material 2 can be adjusted according to the node position of the existing main material 1 of the transmission tower according to actual needs, so as to achieve a good reinforcement effect.

[0039] The cross plate 4 is composed of four plate leaves, each of which is provided with several mounting holes for installing bolts. The mounting holes are located at the three-division points of the cross plate 4. Similarly, the reinforcing main material 2 and the clamp 3 are provided with mounting holes corresponding to the cross plate 4 one by one.

[0040] like Figure 3As shown, the four leaves of the cross plate 4 are divided into two short leaves and two long leaves, wherein the two short leaves are vertically fixed to form a first right-angle structure, and the two long leaves are vertically fixed to form a second right-angle structure. The first right-angle structure and the second right-angle structure are centrally symmetrically arranged. The first right-angle structure is used to install the reinforced main material 2, and the second right-angle structure is used to be installed on the existing main material 1. The cross-sectional length of the long leaf is longer than the existing main material 1, so that a mounting hole can be opened at the part where the long leaf extends out of the existing main material 1 for bolt connection with the clamp 3, avoiding drilling on the existing main material 1 and preventing secondary damage to the existing main material 1.

[0041] Since there is no need to drill holes in the existing main material 1, and the existing main material 1 does not need to be disassembled or damaged, the stable operation of the transmission tower line is guaranteed as much as possible, and the stable transportation of electric energy is maintained. In addition, the structure is simple, the installation speed is fast, and no welding is required, which avoids the generation of residual stress and local damage.

[0042] The use of bolts effectively overcomes the disadvantage of welded steel plates being easy to loosen during service. On the one hand, it makes the connection method simple, the fixation reliable, and convenient for installation during use and subsequent disassembly and maintenance, which increases the convenience of replacing the reinforcement device; on the other hand, the use of bolts further strengthens the tightness between the device and the main material of the transmission tower, and improves the result of the coordinated force between the existing main material 1 and the reinforced main material 2.

[0043] The stiffening rib 5 is provided with a through hole for installing the connecting rod 7. Both ends of the connecting rod 7 have external threads. The connecting rod 7 is arranged between the stiffening ribs 5 on the two adjacent cross plates 4 on the same side and is fixed by nuts 8.6. Several vibration-damping and energy-dissipating mechanisms 8 are provided on the connecting rod 7 at intervals along its length to contact and connect with the side walls of the existing main material 1 and the reinforced main material 2.

[0044] The connecting rod 7 is arranged along the length direction of the existing main material 1. The connecting rod 7 is composed of a plurality of coaxially arranged rod bodies 7.1 and a first damper 7.2. Two adjacent rod bodies 7.1 are connected through a first damper 7.2 and a vibration reduction and energy dissipation mechanism 8.

[0045] The first damper 7.2 is located between two adjacent rods 7.1. The first damper 7.2 consists of a spring and a circular pad. The circular pad is fixed to both ends of the spring by welding. The two ends of the spring are fixedly connected to the ends of the adjacent rods 7.1 through the circular pad. The diameter of the circular pad is the same as that of the rod 7.1 and is coaxially arranged.

[0046] like Figure 5-Figure 6 As shown, the vibration reduction and energy dissipation mechanism 8 is composed of a positioning cylinder 8.1, a threaded steel pipe 8.2, a first connecting piece 8.3, a screw 8.4, a nut 8.5, a second connecting piece 8.6, a sleeve 8.7, a clamp 8.8, and a second damper 8.9.

[0047] The ends of the sleeve 8.7 are correspondingly sleeved on the ends of the two adjacent rods 7.1. The sleeve 8.7 is composed of two semicircular steel tubes, which are arranged opposite to each other and sleeved on the two adjacent rods 7.1 to connect the ends of the two adjacent rods 7.1. The length of the arc sleeve is greater than the distance between the two adjacent rods 7.1. The first damper 7.2 is located in the sleeve 8.7. The ends of the sleeve 8.7 are respectively provided with a clamp 8.8 and fixed by bolts 6 to prevent separation between the two semicircular steel tubes.

[0048] A second damper 8.9 is installed on each semicircular steel tube, and the axis of the second damper 8.9 is perpendicular to the axis of the connecting rod 7. The angle of the second damper 8.9 on one semicircular steel tube is fixed, and the angle of the second damper 8.9 on the other semicircular steel tube is adjustable. During use, the two second dampers 8.9 in the same group are perpendicular to each other.

[0049] Specifically, the angle of the second damper 8.9 connected to the existing main material 1 is fixed, and the angle of the second damper 8.9 connected to the reinforced main material 2 is adjustable.

[0050] The outer wall of the second damper 8.9 is provided with an external thread. The second damper 8.9 is arranged in the threaded steel pipe 8.2 with an internal thread through a threaded connection. The telescopic rod of the second damper 8.9 extends outward from the threaded steel pipe 8.2.

[0051] Among them, the threaded steel pipe 8.2 corresponding to the second damper 8.9 with a fixed angle is fixedly connected to the corresponding semicircular steel pipe through the first connecting piece 8.3, and the first connecting piece 8.3 and the corresponding semicircular steel pipe are welded; the threaded steel pipe 8.2 corresponding to the second damper 8.9 with an adjustable angle is rotatably connected to the corresponding semicircular steel pipe through the second connecting piece 8.6, and the second connecting piece 8.6 is also fixed to the corresponding semicircular steel pipe by welding. The bottom of the threaded steel pipe 8.2 corresponding to the second damper 8.9 with an adjustable angle is connected to the second connecting piece 8.6 through the threaded steel pipe 8.4 corresponding to the second damper 8.9 with an adjustable screw angle and a nut 8.5, so that the angle can be adjusted and fixed. The second damper 8.9 is a hydraulic damper.

[0052] The positioning tube 8.1 is fixedly installed on the existing main material 1 and the reinforcement main material 2 by welding. The inner diameter of the positioning tube 8.1 is the same as the diameter of the telescopic rod of the second damper 8.9. The telescopic rod of the second damper 8.9 is inserted into the positioning tube 8.1 to stabilize and limit the position of the telescopic rod, thereby ensuring the effective connection between the second damper 8.9 and the corresponding existing main material 1 and the reinforcement main material 2.

[0053] Since the positioning cylinder 8.1 is relatively small in size and the welding area is small, the problem of residual stress and local damage is effectively avoided.

[0054] When the existing main material 1 vibrates in the longitudinal direction, the connecting rod 7 connected to the stiffening rib 5 can transmit energy to the first damper 7.2 to achieve the effect of vibration reduction and energy dissipation; when the existing main material 1 vibrates in the transverse direction, the energy of the existing main material 1 and the reinforced main material 2 can be transmitted to the second damper 8.9 through the telescopic rod to achieve the effect of vibration reduction and energy dissipation, which can effectively control the vibration of the transmission tower in all directions.

[0055] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A transmission tower anti-buckling support main material reinforcement and coordinated vibration reduction and energy dissipation device, characterized in that: It includes a reinforcing main material that is centrally symmetrical with the existing main material, a plurality of coaxially arranged cross plates are provided between the existing main material and the reinforcing main material, the existing main material and the reinforcing main material are respectively provided at two diagonal corners of the cross plates, the reinforcing main material and the cross plates are bolted together, a clamp is provided on the outside of the existing main material, the clamp is bolted to the cross plates to clamp the existing main material, at least two stiffening ribs are fixedly installed at the other two diagonal corners of the cross plates, the stiffening ribs on two adjacent cross plates on the same side are connected by a connecting rod containing a first damper, and the connecting rod is provided with a plurality of vibration reduction and energy dissipation mechanisms connected to the side walls of the existing main material and the reinforcing main material; The stiffening rib is a triangular plate structure that matches the cross plate and is fixedly connected to the cross plate by welding; the four plate leaves of the cross plate are divided into two short plate leaves and two long plate leaves. The cross-sectional length of the long plate leaves is longer than the existing main material, so that mounting holes can be opened at the part where the long plate leaves extend out of the existing main material for bolt connection with the clamp.

2. The transmission tower anti-buckling support main material reinforcement and coordinated vibration reduction and energy dissipation device according to claim 1 is characterized in that: The connecting rod is arranged along the length direction of the existing main material, and a plurality of vibration reduction and energy dissipation mechanisms are arranged on the connecting rod at intervals along the length direction thereof.

3. The transmission tower anti-buckling support main material reinforcement and coordinated vibration reduction and energy dissipation device according to claim 1 is characterized in that: The connecting rod is composed of a plurality of coaxially arranged rod bodies and a first damper, and two adjacent rod bodies are connected via a first damper and a vibration reduction and energy dissipation mechanism.

4. The transmission tower anti-buckling support main material reinforcement and coordinated vibration reduction and energy dissipation device according to claim 3 is characterized in that: The first damper is composed of a spring and circular pads fixed at both ends of the spring. The circular pads are fixedly connected to the ends of the adjacent rods. The diameter of the circular pads is the same as that of the rods and they are coaxially arranged.

5. The transmission tower anti-buckling support main material reinforcement and coordinated vibration reduction and energy dissipation device according to claim 3 is characterized in that: The vibration reduction and energy dissipation mechanism consists of a sleeve and two second dampers installed on the outer wall of the sleeve. The two ends of the sleeve are correspondingly sleeved on the ends of two adjacent rods. The first damper is located inside the sleeve, and the two second dampers are correspondingly connected to the adjacent existing main material and reinforced main material side walls.

6. The transmission tower anti-buckling support main material reinforcement and coordinated vibration reduction and energy dissipation device according to claim 5, characterized in that: The length of the sleeve is greater than the distance between two adjacent rods.

7. The transmission tower anti-buckling support main material reinforcement and coordinated vibration reduction and energy dissipation device according to claim 5, characterized in that: The axes of the two second dampers on the sleeve are perpendicular to the axis of the connecting rod, and the two second dampers are perpendicular to each other. The angle of one second damper is fixed, and the angle of the other second damper is adjustable.

8. The transmission tower anti-buckling support main material reinforcement and coordinated vibration reduction and energy dissipation device according to claim 5, characterized in that: The second damper is arranged in the threaded steel pipe, and the second damper is connected to the sleeve through the threaded steel pipe. The telescopic rod of the second damper extends outward from the threaded steel pipe and is connected to the adjacent existing main material / reinforced main material side wall.

9. The transmission tower anti-buckling brace main material reinforcement and coordinated vibration reduction and energy dissipation device according to claim 8, characterized in that: Positioning cylinders are fixedly installed on the side walls of the existing main material and the reinforced main material, and the ends of the telescopic rods are inserted into the positioning cylinders.

10. The transmission tower anti-buckling brace main material reinforcement and coordinated vibration reduction and energy dissipation device according to claim 5, characterized in that: The sleeve is composed of two butted semicircular steel pipes, and a clamp is provided at each end of the sleeve and fixed by bolts.

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