Rocker arm type double-damping flexible duplex spacer for power transmission line

Abstract

The invention discloses a power transmission line rocker arm type double-damping flexible duplex spacer which comprises two opening wire clamps, a vibration isolator and a damping support, the damping support comprises a first connecting rod, a second connecting rod and a spring damper, and one end of the first connecting rod is rotationally connected with one end of the second connecting rod; two ends of the spring damper are respectively hinged with the first connecting rod and the second connecting rod; the other end of the first connecting rod is connected with one opening wire clamp through a vibration isolator, and the other end of the second connecting rod is fixedly connected with the other opening wire clamp; and the two installed opening wire clamps are arranged at an angle of 90 degrees. According to the invention, the installation scene of two wires with different-surface intersection and an angle of 90 + / -5 degrees can be satisfied, and the device has the characteristics of simple structure and strong adaptability; by arranging the spring shock absorbers and the shock isolators, the scene requirements of high-frequency low-amplitude shock and low-frequency high-amplitude shock can be met through cooperation of the spring shock absorbers and the shock isolators, and the shock absorption effect is more remarkable.

Description

Technical Field

[0001] This invention belongs to the field of high-voltage power transmission technology, specifically relating to a rocker arm type double shock-absorbing flexible double spacer for power transmission lines. Background Technology

[0002] Currently, transmission line lead wires commonly experience wear in the following three situations: First, in grounding electrode lines with double-split conductors, the lack of extension rods makes it easy for the lead wire of the upper sub-conductor to rub against the connecting hardware of the lower sub-conductor, causing wear and strand breakage. Second, in six-split lines such as the Guishan A and B lines, the cross-branch lead wires easily rub against the equalizing rings, causing wear and strand breakage. Third, the ground wire lead wires easily rub against the adjusting plate, causing wear and strand breakage. The current problems include: 1. Grounding electrode lines with double-split conductors lack extension rod hardware, making it impossible to install conventional double-unit support spacers for separation; 2. Some lead wires have incorrect angles or unsuitable lengths due to crimping issues, resulting in the lead wires being too close to tension pipes, U-rings, and other hardware, causing wear and strand breakage under long-term light wind vibration; conventional double-unit spacers are rigid connections, which are prone to breakage under long-term strong wind vibration.

[0003] To avoid the problem of double-unit spacer breakage, patent CN216564452U discloses a spring-hinged phase-to-phase spacer for transmission lines, comprising: a spacer body, a spacer insulating sheet, a hinge structure, and a clamp. The insulating sheet is located on the spacer body, which is connected to the hinge structure, which in turn is connected to the clamp. The hinge structure includes a straight arm connecting plate, a curved arm connecting plate, a right-angle force-transmitting baffle, and a damping spring. These components are sequentially connected, and the damping spring is connected to both ends of the straight arm connecting plate and the right-angle force-transmitting baffle. The hinge structure forms a damping structure, simultaneously forcing the damping spring to reciprocate continuously, thus providing shock absorption. This patented solution alters the existing structure of the spacer and clamp, changing the direct connection between them to a spring-hinged connection. The main body is divided into two sections, connected by a mechanically damped damping spring, reducing relative forces and improving the equipment's service life. However, its use still has the following problems: Due to the limitations of its structural design, its installation scenarios are limited, only allowing installation on parallel power transmission lines. It cannot meet the requirements of installation on two conductors with crossing angles, especially at the location of conductors at a 90-degree angle and tension jumpers. In addition, the spacer bar disclosed in this patent (CN216564452U) is not effective in specific vibration reduction scenarios, especially for high-frequency, low-amplitude vibrations, and cannot effectively eliminate the impact of vibration. Summary of the Invention

[0004] The purpose of this invention is to provide a rocker arm type double shock absorber flexible double spacer for power transmission lines, which has a wide range of applications and can meet the needs of high frequency low amplitude vibration and low frequency high amplitude vibration scenarios, with good shock absorption effect.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: a rocker arm type double vibration damping flexible double spacer for transmission lines, characterized in that: it includes two open clamps, a vibration isolator and a vibration damping bracket, the vibration damping bracket includes a first connecting rod, a second connecting rod and a spring vibration damper, one end of the first connecting rod and one end of the second connecting rod are rotatably connected, and the two ends of the spring vibration damper are respectively hinged to the first connecting rod and the second connecting rod; the other end of the first connecting rod is connected to one open clamp through the vibration isolator, and the other end of the second connecting rod is fixedly connected to the other open clamp, and the two open clamps are arranged at 90 degrees after installation.

[0006] Preferably, the vibration isolator is a rubber vibration isolator.

[0007] Preferably, the rubber vibration isolator is composed of multiple layers of rubber and steel plates stacked alternately.

[0008] Preferably, the spring damper includes a spring and a buffer adjustment component.

[0009] Preferably, the spring is made of carbon steel.

[0010] Preferably, the length of the buffer adjustment member is adjustable within a range of 0-8 cm.

[0011] Preferably, the open clamp includes a fixed clamp part and a movable clamp part, both of which have clamping grooves, and the movable clamp part and the fixed clamp part are connected by a screw.

[0012] Preferably, the clamping groove is an arc-shaped groove.

[0013] Preferably, the clamping groove is further provided with a protective pad.

[0014] Preferably, the end of the first connecting rod is provided with two mounting ears with shaft holes, and the second connecting rod is provided with a rotating shaft corresponding to the shaft hole. After the rotating shaft is installed into the shaft hole, the first connecting rod and the second connecting rod can rotate relative to each other.

[0015] The beneficial effects of the present invention are as follows: by adopting the above structure, the present invention provides a rocker arm type double shock absorber flexible double spacer for transmission lines, which can meet the installation scenario of two conductors intersecting at an angle of 90°±5°, and has the characteristics of simple structure and strong adaptability; by setting spring shock absorbers and vibration isolators, the two can meet the requirements of high frequency low amplitude vibration and low frequency high amplitude vibration scenarios, and the shock absorption effect is more significant.

[0016] Specifically, the present invention has the following characteristics: 1. Adaptive Adjustable Spacing Function. Traditional double-bar spacing is fixed and cannot adapt to the needs of different tower locations. This invention, through the structural design of a spring damper, features an adaptive adjustable spacing function. The length of the spring damper's buffer adjustment component can be adjusted within a range of 0-8cm, flexibly adapting to the gap requirements of different tower locations. It performs particularly well in adjusting the gap between the guide line and the extension rod of tension towers.

[0017] 2. Fracture Prevention Function. Traditional double spacer bars are prone to fracture due to long-term exposure to concentrated stress or wind vibration. The double spacer bar of this invention adopts a shock-absorbing bracket structure design, which can effectively disperse stress, reduce the risk of fracture caused by wind vibration or long-term stress concentration, and improve the durability and safety of the equipment.

[0018] 3. Dual vibration damping function. The spring damper eliminates low-frequency large-amplitude vibrations and swaying, effectively reducing the large swaying of the conductors caused by extreme wind conditions and protecting the conductors and spacers from damage; the rubber damper eliminates high-frequency low-amplitude vibrations, reducing the high-frequency vibration of the conductors under light wind conditions, further improving the stability of the transmission line. It is especially suitable for high-frequency vibration protection when crossing high-speed and high-speed rail sections. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is the front view of the present invention.

[0022] In the figure: 1. First open clamp; 2. Second open clamp; 3. Vibration isolator; 4. Vibration damping bracket; 10. Fixed clamp part; 20. Movable clamp part; 30. Screw; 41. First connecting rod; 42. Second connecting rod; 43. Spring vibration damper; 431. Spring; 432. Buffer adjustment component. Detailed Implementation

[0023] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] like Figure 1 , 2 As shown, a rocker arm type double shock-absorbing flexible double spacer for transmission lines includes a first open clamp 1, a second open clamp 2, a shock isolator 3, and a shock-absorbing bracket 4.

[0028] The shock absorber bracket 4 includes a first connecting rod 41, a second connecting rod 42, and a spring shock absorber 43. The first connecting rod 41 has two mounting ears with shaft holes at its ends. The second connecting rod 42 has a rotating shaft corresponding to the shaft holes. After the rotating shaft is inserted into the shaft holes, the first connecting rod 41 and the second connecting rod 42 can rotate relative to each other. The two ends of the spring shock absorber 43 are hinged to the first connecting rod 41 and the second connecting rod 42, respectively. The other end of the first connecting rod 41 is connected to the first open clamp 1 via a vibration isolator 3, and the other end of the second connecting rod 42 is fixedly connected to the second open clamp 2.

[0029] The first open clamp 1 and the second open clamp 2 are arranged at a 90-degree angle after installation. This design allows the clamps to accommodate the connection requirements of two intersecting conductors with an angle of 90°±5°, ensuring a secure fixation under various working conditions. Furthermore, the open clamp includes a fixed clamp portion 10 and a movable clamp portion 20, both of which have clamping grooves. The movable clamp portion 10 and the fixed clamp portion 20 are connected by a screw 30. Preferably, the clamping grooves are designed as arc-shaped grooves. Additionally, protective pads can be installed inside the clamping grooves for protection. This design allows the open clamps to fit tightly against the conductors, preventing loosening due to wind vibration or external forces.

[0030] In practical applications, the first open clamp 1, connected to the vibration isolator 3, is used to connect the drain line of the tension tower, and the second open clamp 2 is used to connect the conductor or extension rod. The open clamps, through the engagement of two arc-shaped grooves, can fix the drain line or extension rod. The clamp design allows the clamp to fit tightly against the conductor, preventing loosening due to wind vibration or external forces.

[0031] Furthermore, the spring damper 43 includes a spring 431 and a buffer adjustment component 432. The spring damper is the core component of this invention for achieving adaptive gap adjustment and vibration damping. The length adjustment range of the buffer adjustment component 432 is 0-8cm, allowing for free and flexible adjustment. The main body of the buffer adjustment component is composed of vanadium-containing high-strength special steel, possessing excellent strength and fatigue resistance, significantly extending the service life of parts and reducing deformation. In actual installation applications, the user only needs to install the double spacer bar of this invention between the guide line and the extension rod of the tension tower. During use, the spring damper 43 can absorb the vibration energy of the guide line under light wind and extreme wind conditions, ensuring both effective connection between the guide line and the tension extension rod and preventing breakage due to long-term vibration and swaying.

[0032] Furthermore, the vibration isolator 3 is a rubber vibration isolator. The rubber vibration isolator has the following structure: it is composed of multiple layers of rubber and steel plates alternately stacked. By eliminating high-frequency, low-amplitude vibrations, the stability of the transmission line is further improved, making it particularly suitable for high-frequency vibration isolation in sections crossing high-speed railways and highways. The rubber vibration isolator has excellent vibration isolation performance, effectively isolating high-frequency vibrations through a damper made of natural rubber material, reducing the impact of the overall double-bar spacer on the equipment body, and lowering the risk of open clamps detaching due to high-frequency vibration.

[0033] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A rocker arm type double shock-absorbing flexible double spacer bar for transmission lines, characterized in that: It includes two open-end clamps, a vibration isolator, and a damping bracket. The damping bracket includes a first link, a second link, and a spring damper. One end of the first link and one end of the second link are rotatably connected. The two ends of the spring damper are hinged to the first link and the second link, respectively. The other end of the first link is connected to one open-end clamp through the vibration isolator, and the other end of the second link is fixedly connected to the other open-end clamp. The two open-end clamps are arranged at 90 degrees after installation.

2. The transmission line rocker arm type double shock-absorbing flexible double spacer according to claim 1, characterized in that: The vibration isolator is a rubber vibration isolator.

3. The transmission line rocker arm type double shock-absorbing flexible double spacer according to claim 2, characterized in that: The rubber vibration isolator is composed of multiple layers of rubber and steel plates stacked alternately.

4. The rocker arm type double shock-absorbing flexible double spacer bar for transmission lines according to claim 1, characterized in that: The spring damper includes a spring and a buffer adjustment component.

5. The transmission line rocker arm type double shock-absorbing flexible double spacer according to claim 4, characterized in that: The spring is made of carbon steel.

6. The transmission line rocker arm type double shock absorber flexible double spacer according to claim 4, characterized in that: The length of the buffer adjustment component can be adjusted within a range of 0-8cm.

7. The rocker arm type double shock-absorbing flexible double spacer bar for transmission lines according to claim 1, characterized in that: The open clamp includes a fixed clamp part and a movable clamp part. Both the fixed clamp part and the movable clamp part are provided with clamping grooves. The movable clamp part and the fixed clamp part are connected by a screw.

8. The transmission line rocker arm type double vibration damping flexible double spacer according to claim 8, characterized in that: The clamping groove is an arc-shaped groove.

9. The rocker arm type double vibration damping flexible double spacer for transmission lines according to claim 8, characterized in that: The groove is also equipped with a protective pad.

10. The transmission line rocker arm type double vibration damping flexible double spacer according to any one of claims 1-9, characterized in that: The first connecting rod has two mounting ears with shaft holes at its end, and the second connecting rod has a rotating shaft corresponding to the shaft hole. After the rotating shaft is inserted into the shaft hole, the first connecting rod and the second connecting rod can rotate relative to each other.

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