A pre-stirred tuning fork vibration damper with a dual vibration-damping structure

Abstract

This utility model discloses a pre-twisted tuning fork vibration damper with a dual vibration-damping structure, belonging to the technical field of vibration damper technology. The pre-twisted tuning fork vibration damper with a dual vibration-damping structure includes: a trapezoidal connecting frame; a hook plate fixedly connected to the top of the trapezoidal connecting frame; an inner connecting box fixedly connected to the upper inner wall of the trapezoidal connecting frame; two transmission rods slidingly passing through the top of the trapezoidal connecting frame; a T-shaped connecting plate fixedly connected to the upper ends of the two transmission rods; and a sealing rod fixedly connected to the top of the T-shaped connecting plate. This pre-twisted tuning fork vibration damper with a dual vibration-damping structure enables rapid installation of two tuning fork vibration dampers, and the installation process is simple and easy to operate, reducing the time workers spend in the air, thereby reducing the possibility of safety accidents. It allows the two tuning fork vibration dampers to be stably installed on the cable, significantly improving stability. The dual vibration-damping of the two tuning fork vibration dampers greatly enhances the vibration reduction effect of the cable.

Description

Technical Field

[0001] This utility model relates to the field of vibration damping hammer technology, and more specifically, to a pre-twisted tuning fork vibration damping hammer with a dual vibration-damping structure. Background Technology

[0002] In high-voltage transmission lines, cables are exposed to the natural environment for a long time and are affected by dynamic factors such as wind load, conductor vibration, and ice and snow load. They are prone to high-frequency vibration or low-frequency galloping. These vibrations can cause cable fatigue damage and even lead to serious accidents such as strand breakage and wire breakage, threatening the safe and stable operation of the power system.

[0003] A vibration damper is a damping device installed on power transmission lines and ground wires. It is mainly used to suppress high-frequency, low-amplitude vibrations caused by wind to protect the line from fatigue damage. Its typical structure consists of a hammer head, steel strands, and clamps. It dissipates vibration energy through its own inertial oscillation. Traditional vibration dampers are usually fixed directly to the cable by hooks or clamps. Although this installation method is simple, hook-type vibration dampers are prone to loosening or even falling off under long-term vibration or extreme weather conditions, resulting in a decrease in vibration damping effect and requiring frequent maintenance. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a pre-twisted tuning fork vibration damper with a dual anti-vibration structure. This ensures that the tuning fork vibration damper can be installed quickly and with reduced hang time, while also ensuring its stability and preventing it from falling off.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A pre-stirred tuning fork vibration damper with a dual vibration-damping structure includes:

[0009] A trapezoidal connecting frame, wherein a hook plate is fixedly connected to the top of the trapezoidal connecting frame, an inner connecting box is fixedly connected to the upper inner wall of the trapezoidal connecting frame, two transmission rods slide through the top of the trapezoidal connecting frame, a T-shaped connecting plate is fixedly connected to the upper end of the two transmission rods, a sealing rod is fixedly connected to the top of the T-shaped connecting plate, a T-shaped transmission plate is fixedly connected to the lower end of the two transmission rods, and two return springs are fixedly connected between the T-shaped transmission plate and the trapezoidal connecting frame; and

[0010] Two tuning fork-type vibration dampers are fixedly connected to the bottom of the trapezoidal connecting frame.

[0011] As a preferred embodiment of this utility model, the bottom of the trapezoidal connecting frame is fixedly connected to an inner box, the T-shaped transmission plate and the two transmission rods are all located inside the inner box, and the T-shaped transmission plate slides through one side of the inner wall of the inner box.

[0012] In a preferred embodiment of this utility model, a limiting rod is fixedly connected between the T-shaped transmission plate and the trapezoidal connecting frame, and the T-shaped transmission plate is slidably sleeved on the limiting rod.

[0013] As a preferred embodiment of this utility model, a hook ring is fixedly connected to the bottom of the T-shaped transmission plate.

[0014] As a preferred embodiment of this utility model, the two reset springs are respectively slidably sleeved on the two transmission rods.

[0015] In a preferred embodiment of this utility model, both the T-shaped connecting plate and the sealing rod are made of aluminum alloy.

[0016] 3. Beneficial Effects

[0017] Compared with existing technologies, this utility model provides a pre-twisted tuning fork vibration damper with a dual vibration-damping structure, which has the following beneficial effects:

[0018] This dual-vibration-resistant pre-twisted tuning fork vibration damper, when installed on a high-altitude cable, works by pulling the hook ring to lower the T-shaped transmission plate, which in turn lowers the two transmission rods. This causes the T-shaped connecting plate to lower the sealing rod, which then hooks the hook plate onto the pre-twisted strands of the cable. Releasing the T-shaped transmission plate allows the two transmission rods to rise under the restoring force of the two return springs, causing the T-shaped connecting plate to rise and seal the opening of the hook plate. This enables rapid installation of the two tuning fork vibration dampers, and the installation process is simple and easy to operate, reducing the time workers spend suspended in the air and thus lowering the possibility of accidents. Compared to traditional tuning fork vibration dampers that simply hook onto the cable, this device allows the two tuning fork vibration dampers to be stably installed on the cable after installation, as the opening of the hook plate is sealed by the sealing rod, significantly improving stability. The dual vibration resistance of the two tuning fork vibration dampers greatly enhances the vibration reduction effect of the cable. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present utility model;

[0020] Figure 2 This is a side view of the present invention;

[0021] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0022] Figure 4 This is a partial three-dimensional view of the structure of this utility model.

[0023] Explanation of the labels in the diagram:

[0024] 1. Trapezoidal connecting frame; 2. Tuning fork type vibration damper; 3. Hook plate; 4. T-shaped connecting plate; 5. Sealing rod; 6. Inner box; 7. T-shaped transmission plate; 8. Hook ring; 9. Transmission rod; 10. Return spring; 11. Limiting rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] Example:

[0027] Please see Figures 1-4 A pre-stirred tuning fork vibration damper with a dual vibration-damping structure, comprising:

[0028] A trapezoidal connecting frame 1 has a hook plate 3 fixedly connected to its top. An inner connecting box 6 is fixedly connected to the upper inner wall of the trapezoidal connecting frame 1. Two transmission rods 9 slide through the top of the trapezoidal connecting frame 1. A T-shaped connecting plate 4 is fixedly connected to the upper end of the two transmission rods 9. A sealing rod 5 is fixedly connected to the top of the T-shaped connecting plate 4. A T-shaped transmission plate 7 is fixedly connected to the lower end of the two transmission rods 9. Two return springs 10 are fixedly connected between the T-shaped transmission plate 7 and the trapezoidal connecting frame 1.

[0029] Two tuning fork-type vibration dampers 2 are fixedly connected to the bottom of the trapezoidal connecting frame 1.

[0030] In a specific embodiment of this utility model, the hammer head of the tuning fork-type vibration damper 2 consists of two symmetrical mass blocks, similar to the fork arms of a tuning fork, and a rigid arm in the middle. It changes the vibration frequency of the conductor or cable through the resonance characteristics of the tuning fork, thus consuming vibration energy. The tuning fork-type vibration damper 2 is existing technology; the model and specifications are selected according to actual conditions, which will not be elaborated upon here. The two tuning fork-type vibration dampers 2, together with the trapezoidal connecting frame 1 and the hook plate 3, form a double anti-vibration structure. The hook plate 3 is not directly connected to the conductor or optical cable. It is first wrapped around the conductor or optical cable with pre-twisted wire, and then the hook plate 3 is hung on the pre-twisted wire. The pre-twisted wire is a multi-strand spirally wound metal wire. The pre-twisted wire connects the hook plate 3 to the conductor or optical cable, avoiding mechanical damage to the conductor caused by traditional clamping methods. During the laying of high-altitude cables, the pre-twisted wire is generally installed simultaneously. When this device needs to be installed on a high-altitude cable line, it is pulled... The T-shaped transmission plate 7 drives the two transmission rods 9 to descend, causing the T-shaped connecting plate 4 to drive the sealing rod 5 to descend. Then, the hook plate 3 is hung on the pre-twisted wire of the cable. After releasing the T-shaped transmission plate 7, under the restoring force of the two return springs 10, the T-shaped transmission plate 7 will drive the two transmission rods 9 to rise, causing the T-shaped connecting plate 4 to drive the sealing rod 5 to rise, sealing the opening of the hook plate 3. This achieves the rapid installation of the two tuning fork type vibration dampers 2, and the installation process is simple and easy to operate, reducing the time that operators spend in the air, thereby reducing the possibility of safety accidents. At the same time, compared with the traditional tuning fork vibration dampers that are simply installed by hooking them onto the cable, after the two tuning fork type vibration dampers 2 are installed, because the opening of the hook plate 3 is sealed by the sealing rod 5, the two tuning fork type vibration dampers 2 can be stably installed on the cable, greatly improving stability. The dual vibration resistance of the two tuning fork type vibration dampers 2 greatly enhances the vibration reduction effect of the cable.

[0031] Specifically, the bottom of the trapezoidal connecting frame 1 is fixedly connected to an inner box 6. The T-shaped transmission plate 7 and two transmission rods 9 are all located inside the inner box 6. The T-shaped transmission plate 7 slides through one side of the inner wall of the inner box 6.

[0032] In this embodiment, the inner box 6 protects the T-shaped transmission plate 7, the two transmission rods 9, and the two return springs 10.

[0033] Specifically, a limiting rod 11 is fixedly connected between the T-shaped transmission plate 7 and the trapezoidal connecting frame 1, and the T-shaped transmission plate 7 is slidably sleeved on the limiting rod 11.

[0034] In this embodiment, the limiting rod 11 keeps the T-shaped transmission plate 7 stable during its up-and-down movement.

[0035] Specifically, the bottom of the T-shaped transmission plate 7 is fixedly connected with a hook ring 8.

[0036] In this embodiment, the hook 8 facilitates the operator to pull the T-shaped transmission plate 7.

[0037] Specifically, the two return springs 10 are slidably sleeved on the two transmission rods 9 respectively.

[0038] In this embodiment, two return springs 10 are sleeved on two transmission rods 9, so that the two return springs 10 will not be twisted.

[0039] Specifically, both the T-shaped connecting plate 4 and the sealing rod 5 are made of aluminum alloy.

[0040] In this embodiment, both the T-shaped connecting plate 4 and the sealing rod 5 are made of aluminum alloy, which helps to reduce the generation of corona.

[0041] Working principle: When this device needs to be installed on a high-altitude cable, pulling the hook ring 8 causes the T-shaped transmission plate 7 to descend, which in turn causes the two transmission rods 9 to descend, causing the T-shaped connecting plate 4 to drive the sealing rod 5 to descend. Then, the hook plate 3 is hung on the pre-twisted wire of the cable. After releasing the T-shaped transmission plate 7, under the restoring force of the two return springs 10, the T-shaped transmission plate 7 will drive the two transmission rods 9 to rise, causing the T-shaped connecting plate 4 to drive the sealing rod 5 to rise, sealing the opening of the hook plate 3. This achieves the rapid installation of the two tuning fork type vibration dampers 2, and the installation process is simple and easy to operate, reducing the time that workers spend in the air, thereby reducing the possibility of safety accidents. At the same time, compared with the traditional tuning fork vibration dampers that are simply hooked onto the cable, after the two tuning fork type vibration dampers 2 are installed, because the opening of the hook plate 3 is sealed by the sealing rod 5, the two tuning fork type vibration dampers 2 can be stably installed on the cable, greatly improving stability. The dual vibration resistance of the two tuning fork type vibration dampers 2 greatly enhances the vibration reduction effect of the cable.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A pre-twisted tuning fork vibration damper of a double anti-vibration structure, characterized in that, include: A trapezoidal connecting frame (1) has a hook plate (3) fixedly connected to its top, an inner connecting box (6) fixedly connected to its upper inner wall, two transmission rods (9) slidingly passing through the top of the trapezoidal connecting frame (1), a T-shaped connecting plate (4) fixedly connected to the upper end of the two transmission rods (9), a sealing rod (5) fixedly connected to the top of the T-shaped connecting plate (4), a T-shaped transmission plate (7) fixedly connected to the lower end of the two transmission rods (9), and two return springs (10) fixedly connected between the T-shaped transmission plate (7) and the trapezoidal connecting frame (1); and Two tuning fork type vibration dampers (2) are fixedly connected to the bottom of the trapezoidal connecting frame (1).

2. The pre-twisted tuning fork vibration damper with a dual vibration-damping structure according to claim 1, characterized in that: The bottom of the trapezoidal connecting frame (1) is fixedly connected to an inner box (6). The T-shaped transmission plate (7) and the two transmission rods (9) are located inside the inner box (6). The T-shaped transmission plate (7) slides through one side of the inner wall of the inner box (6).

3. The pre-stirred tuning fork vibration damper with a dual vibration-damping structure according to claim 1, characterized in that: A limiting rod (11) is fixedly connected between the T-shaped transmission plate (7) and the trapezoidal connecting frame (1), and the T-shaped transmission plate (7) is slidably sleeved on the limiting rod (11).

4. The pre-stirred tuning fork vibration damper with a dual vibration-damping structure according to claim 1, characterized in that: The bottom of the T-shaped transmission plate (7) is fixedly connected to a hook ring (8).

5. The pre-twisted tuning fork vibration damper with a dual vibration-damping structure according to claim 1, characterized in that: The two reset springs (10) are respectively slidably sleeved on the two transmission rods (9).

6. The pre-twisted tuning fork vibration damper with a dual vibration-damping structure according to claim 1, characterized in that: The T-shaped connecting plate (4) and the sealing rod (5) are both made of aluminum alloy.

Images