220kv high voltage line damper device

Abstract

The utility model relates to the field of shock absorber, and disclose 220KV high tension line shock absorber device, including steel strand and two groups of hammer head, the steel strand outer circumferential surface middle position department fixedly penetrates and has the installation sleeve, install the clamp subassembly, install the clamp subassembly includes the mount frame base, mount frame end and arc stopper, the left and right two side wall surfaces of mount frame end are opened and are equipped with first threading groove and second threading groove, limit unit, limit unit includes arc washer and two groups of fixed hole pile. Through the utilization arc washer's curved surface increases and the contact area and friction force of conductor, first pre -stranded silk activity penetrates first threading groove, second threading groove and is wound in the outer wall surface of conductor, two groups of second pre -stranded silk are wound in the outer wall surface of 220KV high tension line one side of fixed hole pile, synchronous offset the axial displacement tendency of hammer head, fundamentally solve the slippage problem of traditional shock absorber because of vibration.

Description

Technical Field

[0001] This utility model relates to the field of vibration dampers, and more particularly to a vibration damper device for 220KV high-voltage lines. Background Technology

[0002] A vibration damper is a damping device installed on high-voltage overhead transmission lines. It is primarily used to suppress vibrations or galloping of conductors caused by wind, current, or external environmental factors (such as earthquakes). Its core principle is to generate a hysteretic motion opposite to the direction of conductor vibration through the inertia of the hammer's mass, thus consuming vibration energy. This reduces the risk of fatigue damage, hardware wear, and insulator loosening caused by periodic bending of the conductor, ensuring the long-term stable operation of the power grid in harsh environments.

[0003] A search revealed that utility model application CN201620923475.2 discloses a vibration damper, including a clamp and two hammer bodies connected by a steel strand. The clamp is mounted on the steel strand. The application also includes a windproof umbrella fitted onto the hammer bodies, with stops on both sides. The clamp is a telescopic clamp, including a fixed plate and a movable plate. The fixed plate is connected to the steel strand and has several fixing holes. The movable plate is connected to the fixed plate through the fixing holes and bolts.

[0004] Existing technologies use umbrella-shaped windproof covers to increase the obstructed area of ​​the vibration damper, thereby reducing its sway amplitude and improving the vibration damping effect. However, existing vibration dampers are fixed to the outer wall of the conductor by bolt locking structures, which are prone to loosening in low-temperature environments, causing the damper to move or even fall off. Some existing vibration dampers use multiple sets of pre-twisted wires directly wound onto the outer wall of the conductor by wire clamps. They rely on the pre-twisted wires to increase the contact area and prevent displacement. However, a large number of pre-twisted wires need to be operated, making the operation difficult and time-consuming for installers, increasing the risk of working at height. Moreover, the winding direction of multiple sets of pre-twisted wires is the same, which will produce synchronous deformation under conductor vibration. When the conductor moves downward, the vibration damper moves upward due to inertia, causing the pre-twisted wires to be deformed by bending moment. After the deformation accumulates, the pre-twisted wires repeatedly expand and contract like a spring.

[0005] Therefore, this application proposes a vibration damper device for 220KV high-voltage lines. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a 220KV high-voltage line anti-vibration hammer device, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A 220kV high-voltage line vibration damper device includes: a steel strand and two sets of hammers, with both ends of the steel strand fixedly connected to the corresponding hammers, and an installation sleeve fixedly passing through the middle of the outer circumference of the steel strand; an installation clamp assembly, which includes an installation frame base, an installation frame end, and an arc-shaped stop, with the installation sleeve fixedly passing through the installation frame base, the installation frame end being located on one side of the top of the installation frame base, and the installation frame end being hook-shaped; a lifting rectangular block being fixedly connected to the bottom of the arc-shaped stop, and the installation frame base and the lifting rectangular block being in a movable engagement relationship; a first wire-passing groove and a second wire-passing groove being formed between the left and right side walls of the installation frame end; and a limiting unit, which includes an arc-shaped washer and two sets of fixing holes to prevent the hammers from sliding along the 220kV high-voltage line direction, with the top of the arc-shaped washer abutting against the top of the inner wall of the installation frame end, and the bottom of the arc-shaped washer contacting the 220kV high-voltage line.

[0008] According to the 220KV high-voltage line anti-vibration hammer device, the side of the arc-shaped stop block near the end of the mounting frame is concave arc-shaped. The arc-shaped stop block cooperates with the end of the mounting frame to clamp the 220KV high-voltage line. An elliptical groove is opened through the front and rear side walls of the lifting rectangular block.

[0009] According to the 220KV high-voltage line anti-vibration hammer device, the top of the mounting bracket base is provided with a lifting and engaging slot, which is T-shaped, and the lifting rectangular block can be movably engaged in the lifting and engaging slot.

[0010] According to the 220KV high-voltage line anti-vibration hammer device, a locking hole is provided between the front and rear side walls of the mounting bracket base, and a bolt is movably connected between the lifting rectangular block and the mounting bracket base. The bolt movably passes through the elliptical groove and the locking hole and is threaded with double nuts.

[0011] According to the 220KV high-voltage line anti-vibration hammer device, the cross-section of the arc-shaped pad is "crescent-shaped", and a force-bearing seat is fixedly installed on both sides of the top of the arc-shaped pad.

[0012] According to the 220KV high-voltage line anti-vibration hammer device, two sets of fixed piles are fixedly installed on the top of the corresponding force-bearing seat. The two sets of fixed piles are symmetrical, and the side of the two sets of fixed piles that are close to each other is in contact with the side of the end of the corresponding mounting frame.

[0013] According to the 220KV high-voltage line anti-vibration hammer device, a first pre-twisted wire is movably passed through both the first and second wire grooves, and the two ends of the first pre-twisted wire are respectively wrapped around the outer wall of the 220KV high-voltage line. A second pre-twisted wire is movably passed through both sets of fixed hole pile cavities, and the two sets of second pre-twisted wires are respectively wrapped around the outer wall of the 220KV high-voltage line on one side of the fixed hole pile. The two sets of second pre-twisted wires are in an axially symmetrical state.

[0014] This utility model provides a vibration damper device for 220kV high-voltage lines. It has the following beneficial effects: (1) This utility model increases the contact area and friction with the conductor by utilizing the curved surface of the arc-shaped pad. The first pre-twisted wire passes through the first and second wire grooves and is wrapped around the outer wall of the conductor. The two sets of second pre-twisted wires are wrapped around the outer wall of the 220KV high-voltage line on one side of the fixed hole pile, which simultaneously counteracts the axial displacement trend of the hammer head and fundamentally solves the slippage problem caused by vibration of traditional anti-vibration hammers.

[0015] (2) This utility model sets up a linkage structure of installation clamp assembly, lifting rectangular block and lifting locking groove, and locks it with bolts and double nuts through the elliptical groove. It is suitable for 220KV high voltage lines of different diameters. The vertical locking guide of lifting locking groove and lifting rectangular block ensures that there is no deviation in the lifting process. Combined with the anti-loosening design of double nuts and spring washers, it suppresses bolt loosening under high frequency vibration and improves the long-term stability of the device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the 220KV high-voltage line anti-vibration hammer device of this utility model; Figure 2 This is a three-dimensional structural diagram of the mounting frame base of the 220KV high-voltage line anti-vibration hammer device of this utility model; Figure 3 This is a schematic diagram showing the connection relationship between the arc-shaped stop block and the lifting rectangular block of the 220KV high-voltage line anti-vibration hammer device of this utility model. Figure 4 This is a three-dimensional structural diagram of the mounting bracket base and mounting bracket end of the 220KV high-voltage line anti-vibration hammer device of this utility model; Figure 5 This is a three-dimensional structural diagram of the limiting unit of the 220KV high-voltage line anti-vibration hammer device of this utility model.

[0017] Legend: 10. Steel strand; 11. Hammer head; 12. Mounting sleeve; 13. Mounting bracket base; 14. Mounting bracket end; 15. Arc-shaped stop block; 16. Limiting unit; 17. First wire-passing groove; 18. Second wire-passing groove; 19. Lifting rectangular block; 20. Elliptical groove; 21. Lifting locking groove; 22. Locking hole; 23. Bolt; 24. Arc-shaped washer; 25. Force-bearing seat; 26. Fixing hole pile. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] Please see Figure 1-5As shown, this utility model is a 220KV high-voltage line anti-vibration hammer device, including a steel strand 10 and two sets of hammer heads 11. The steel strand 10 is usually made of multiple strands of galvanized steel wire, which has high tensile strength and flexibility. The two ends of the steel strand 10 are fixedly connected to the corresponding hammer heads 11. The hammer heads 11 are made of cast iron or zinc alloy. Their mass inertia generates a force opposite to the phase of the conductor vibration, which cancels the vibration energy through hysteresis motion. An installation sleeve 12 is fixedly inserted through the middle position of the outer circumference of the steel strand 10 as an anchor point for the installation clamp assembly to ensure uniform force transmission.

[0020] like Figure 2-3 As shown, the mounting clamp assembly includes a mounting base 13, a mounting end 14, and an arc-shaped stop 15. A mounting sleeve 12 is fixedly inserted through the mounting base 13. The mounting end 14 is located on one side of the top of the mounting base 13 and is hook-shaped, fitting snugly against the conductor. A lifting rectangular block 19 is fixedly connected to the bottom of the arc-shaped stop 15. The movement of the lifting rectangular block 19 synchronously drives the arc-shaped stop 15 to rise and fall. The mounting base 13 and the lifting rectangular block 19 are in a movable engaging relationship. A first wire-passing groove 17 and a second wire-passing groove 18 are formed between the left and right side walls of the mounting end 14. The first wire-passing groove 17 and the second wire-passing groove 18 guide the winding of the pre-twisted wire, increasing the contact area with the 220KV high-voltage line. The side of the arc-shaped stop 15 near the end 14 of the mounting bracket is concave arc-shaped. The arc-shaped stop 15 and the end 14 of the mounting bracket form a closed clamping cavity, thereby clamping the 220KV high-voltage line. The concave arc-shaped surface matches the outer diameter of the 220KV high-voltage line to avoid stress concentration and damage to the conductor. An elliptical groove 20 is provided between the front and rear side walls of the lifting rectangular block 19.

[0021] like Figure 4 As shown, the top of the mounting base 13 has a lifting engagement slot 21, which is T-shaped. The lifting rectangular block 19 can be movably engaged in the lifting engagement slot 21 to ensure vertical lifting without tilting, and to adapt to clamping 220KV high-voltage lines of different diameters. Locking holes 22 are provided between the front and rear side walls of the mounting base 13. A bolt 23 movably passes between the lifting rectangular block 19 and the mounting base 13. The bolt 23 movably passes through the elliptical groove 20 and the locking hole 22 and is threaded with double nuts. When the double nuts are tightened, they generate an adaptive clamping force to prevent overload damage to the conductor.

[0022] It should be noted that: Bolt 23 is a high-strength anti-loosening nut, and the outer walls of bolt 23 and double nuts are coated with anti-corrosion paint. A spring washer is also provided between bolt 23 and lifting rectangular block 19. The mounting bracket base 13, mounting bracket end 14, arc-shaped stop 15, limit unit 16, lifting rectangular block 19, and bolt 23 are all made of aluminum alloy and have undergone anodizing treatment. The surface of hammer head 11 has been galvanized.

[0023] like Figure 5 As shown, the limiting unit 16 includes an arc-shaped pad 24 and two sets of fixing holes 26, used to prevent the hammer head 11 from sliding along the 220KV high-voltage line. The top of the arc-shaped pad 24 is in contact with the top of the inner wall of the mounting bracket end 14, and the bottom of the arc-shaped pad 24 is in contact with the 220KV high-voltage line. The cross-section of the arc-shaped pad 24 is crescent-shaped to increase friction and prevent radial sliding. Force-bearing seats 25 are fixedly installed on both sides of the top of the arc-shaped pad 24. The two sets of fixing holes 26 are fixedly installed on the top of the corresponding force-bearing seats 25. The two sets of fixing holes 26 are symmetrical, and the side of the two sets of fixing holes 26 that is close to each other is in contact with one side of the corresponding mounting bracket end 14. First pre-twisted wires are movably inserted into both the first wire groove 17 and the second wire groove 18, and the two ends of the first pre-twisted wires are respectively wrapped around the outer wall of the 220KV high-voltage line to increase the contact area with the 220KV high-voltage line and prevent the installation clamp assembly from shifting or loosening. Second pre-twisted wires are movably inserted into both sets of fixing piles 26, and the two sets of second pre-twisted wires are respectively wrapped around the outer wall of the 220KV high-voltage line on one side of the fixing pile 26. The two sets of second pre-twisted wires are in an axisymmetric state and are wrapped in opposite directions to provide bidirectional limiting force. The second-stage pre-twisted wires counteract the axial displacement tendency of the hammer head 11 through symmetrical tension, solving the sliding problem caused by vibration in traditional anti-vibration hammers.

[0024] The implementation principle of this utility model's 220KV high-voltage line anti-vibration hammer device is as follows: First, the lifting rectangular block 19 engages in the lifting engagement slot 21 at the top of the mounting bracket base 13, ensuring vertical movement without deviation and adapting to the clamping requirements of wires of different diameters. The bolt 23 passes through the elliptical slot 20 and the locking hole 22, and is locked by a combination of double nuts and spring washers, generating an adaptive clamping force to avoid overload damage to the wires, while suppressing the loosening of the bolt 23 caused by high-frequency vibration.

[0025] Secondly, the mounting bracket end 14 is provided with a first wire groove 17 and a second wire groove 18 to guide the first pre-twisted wire to wind along the outer wall of the conductor, increase the contact area, and disperse the stress. The second pre-twisted wire is passed through the fixed hole pile 26. The two sets of pre-twisted wires are wound in opposite directions with axisymmetrical tension to counteract the axial displacement tendency of the hammer head 11 and suppress the sliding from the mechanical source.

[0026] Finally, the arc-shaped gasket 24 of the limiting unit 16 has a crescent-shaped cross section, and its bottom end directly contacts the wire. The curved surface increases the friction force to prevent radial sliding. The top of the arc-shaped gasket 24 fits against the inner wall of the mounting bracket end 14. Two sets of force seats 25 are fixedly installed on both sides of the top of the arc-shaped gasket 24. The fixing hole pile 26 is installed on the force seat 25 and works with the second pre-twisted wire to suppress the axial sliding of the hammer head 11.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

A 1.220kV high-voltage line vibration damper device, comprising a steel strand (10) and two sets of hammers (11), wherein both ends of the steel strand (10) are fixedly connected to the corresponding hammers (11), characterized in that: An installation sleeve (12) is fixedly inserted through the middle position of the outer periphery of the steel strand (10); The mounting clamp assembly includes a mounting base (13), a mounting end (14), and an arc-shaped stop (15). The mounting sleeve (12) is fixedly inserted through the mounting base (13). The mounting end (14) is located on one side of the top of the mounting base (13). The mounting end (14) is hook-shaped. The bottom end of the arc-shaped stop (15) is fixedly connected to a lifting rectangular block (19). The mounting base (13) and the lifting rectangular block (19) are in a movable engagement relationship. A first wire-passing groove (17) and a second wire-passing groove (18) are provided between the left and right side walls of the mounting bracket end (14). The limiting unit (16) includes an arc-shaped pad (24) and two sets of fixing holes (26) to prevent the hammer (11) from sliding along the 220KV high voltage line. The top of the arc-shaped pad (24) is in contact with the top of the inner wall of the mounting bracket end (14), and the bottom of the arc-shaped pad (24) is in contact with the 220KV high voltage line.

2. The 220kV high-voltage line vibration damper device according to claim 1, characterized in that: The arc-shaped stop (15) is concave on the side near the end of the mounting frame (14). The arc-shaped stop (15) works with the end of the mounting frame (14) to clamp the 220KV high voltage line. An elliptical groove (20) is provided between the front and rear side walls of the lifting rectangular block (19).

3. The 220kV high-voltage line vibration damper device according to claim 1, characterized in that: The top of the mounting bracket base (13) is provided with a lifting engagement groove (21), which is T-shaped, and the lifting rectangular block (19) can be movably engaged in the lifting engagement groove (21).

4. The 220kV high-voltage line vibration damper device according to claim 3, characterized in that: Locking holes (22) are provided between the front and rear side walls of the mounting bracket base (13). A bolt (23) is provided between the lifting rectangular block (19) and the mounting bracket base (13). The bolt (23) is provided through the elliptical groove (20) and the locking hole (22) and is threaded with a double nut.

5. The 220kV high-voltage line vibration damper device according to claim 1, characterized in that: The cross-section of the arc-shaped gasket (24) is crescent-shaped, and force-bearing seats (25) are fixedly installed on both sides of the top of the arc-shaped gasket (24).

6. The 220kV high-voltage line vibration damper device according to claim 1, characterized in that: The two sets of fixed piles (26) are fixedly installed on the top of the corresponding load-bearing seat (25). The two sets of fixed piles (26) are symmetrical. The side of the two sets of fixed piles (26) that are close to each other is in contact with the side of the corresponding mounting frame end (14).

7. The 220kV high-voltage line vibration damper device according to claim 1, characterized in that: The first wire threading groove (17) and the second wire threading groove (18) are both movably connected with a first pre-twisted wire, and the two ends of the first pre-twisted wire are respectively wrapped around the outer wall of the 220KV high voltage line. The two sets of fixed hole piles (26) are both movably connected with a second pre-twisted wire, and the two sets of second pre-twisted wires are respectively wrapped around the outer wall of the 220KV high voltage line on one side of the fixed hole pile (26). The two sets of second pre-twisted wires are in an axially symmetrical state.

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