Power transmission line stockbridge damper
The anti-vibration hammer for power transmission lines addresses the issue of single-point stress concentration by distributing vibration loads through multiple force points, enhancing stability and facilitating maintenance.
Patent Information
- Application Number
- CN202420104376.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-16
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-16
AI Technical Summary
Existing anti-vibration hammers for power transmission lines concentrate stress at a single point, leading to local structural fatigue and damage due to long-term vibrations.
A transmission line anti-vibration hammer design featuring multiple force points, including a connecting block, clamping plates, springs, and elastic rods, which distribute the vibration load and enhance stability, with components that facilitate easy installation and maintenance.
The design improves the stability and seismic resistance of power transmission lines by distributing vibration forces, reducing structural stress and enabling easy maintenance access.
Smart Images
Figure CN222169268U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shockproof hammers, in particular to a shockproof hammer for power transmission lines. Background Art
[0002] During power construction, since high-voltage overhead lines are located at high poles and have large spans, the cables will vibrate when affected by earthquakes or wind. When the cables vibrate, the working conditions at the cable suspension point are most unfavorable. Due to multiple vibrations, the cables will suffer fatigue damage due to periodic bending. In order to prevent this phenomenon from occurring, shockproof devices are generally hung on the cables near both sides of the insulators to absorb or weaken vibration energy, change the line swing frequency, and prevent line vibration.
[0003] A Chinese patent document with the search announcement number CN205863864U discloses an anti-vibration hammer, in particular, an integral prefabricated composite anti-vibration hammer in the field of power transmission line hardware. The utility model mainly solves the problems of existing anti-vibration hammers, such as corona generation, rust and shedding, wire wear, and loose installation. The utility model discloses an integral prefabricated composite anti-vibration hammer, including a weight, a high-frequency vibration rod and a wire clamp, two of the weights are installed at the ends of the high-frequency vibration rod, and the other end of the high-frequency vibration rod is connected to the wire clamp, the weight, the high-frequency vibration rod and the wire clamp are an integrated structure, a weight core is arranged in the center of the weight, and the weight core is made of a high-density non-metallic material.
[0004] However, when the above equipment is in use, only the fixed point is used as the stress point, which is relatively single. Under the action of long-term vibration, the shock-absorbing hammer will generate a large single-point load at this point, resulting in local stress concentration on the structure, increasing the risk of fatigue and damage of structural components. Utility Model Content
[0005] In order to make up for the above shortcomings, the utility model provides a transmission line anti-vibration hammer, which aims to improve the problem of the fixed point being the single force point when the above equipment is used, and avoid the anti-vibration hammer generating a large single-point load at this point.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transmission line shockproof hammer, comprising a connecting block, a clamping plate 1 is fixedly connected to the top of the connecting block, a clamping plate 2 is rotatably connected to the rear side of the top of the clamping plate 1, a fixing block 1 is fixedly connected to the front end of the clamping plate 2, a bolt is threadedly connected to the internal thread of the fixing block 1, a fixing block 2 is threadedly connected to the bottom of the bolt, the fixing block 2 is fixedly connected to the front end of the clamping plate 1, a spring 1 is fixedly connected to the inside of the clamping plate 2 and a plurality of springs 1 are fixedly connected to the bottom of the springs 1, extension blocks are fixedly connected to the left and right sides of the top of the connecting block, a slider is slidably connected to the top of the extension block, and a fixing assembly is fixedly connected to the front end of the extension block.
[0007] As a further description of the above technical solution:
[0008] The fixing assembly includes a lifting frame and a snap-fit block, the lifting frame is fixedly connected to the front end of the slider, the snap-fit block is fixedly connected to the front end of the extension block, a movable lifting is slidably connected inside the lifting frame, and the movable lifting is snap-fitted inside the snap-fit block.
[0009] As a further description of the above technical solution:
[0010] A threaded groove is provided inside the connection block, threaded rods are threadedly connected on both sides of the threaded groove, elastic rods are fixedly connected to two side walls of the threaded rods, hammer bodies are fixedly connected to two side walls of the elastic rods, and sealing rings are fixedly connected to the left and right sides of the connection block.
[0011] As a further description of the above technical solution:
[0012] A second spring is arranged inside the strap frame, and the second spring is arranged on the outer wall of the movable strap.
[0013] As a further description of the above technical solution:
[0014] The outer wall of the hammer body is fixedly connected with uniformly distributed friction strips.
[0015] As a further description of the above technical solution:
[0016] The bottoms of the two extension blocks are fixedly connected to the limiting block 2.
[0017] As a further description of the above technical solution:
[0018] The interior of the thread groove is fixedly connected to a limiting block 1.
[0019] As a further description of the above technical solution:
[0020] The channel diameters of the extension block and the sliding block are larger than the channel diameters of the first clamping plate and the second clamping plate.
[0021] The utility model has the following beneficial effects:
[0022] 1. In the utility model, through the cooperation of the connecting block, the first clamping plate, the second clamping plate, the first clamping block, the second clamping block, the bolt, the first spring, the rubber pad, the extension block and the slider, the force points of the transmission line on the anti-vibration hammer are increased, the stability of the transmission line is improved, and when the transmission line is affected by an earthquake or a strong wind, the anti-vibration hammer slows down the vibration transmission through the increased force points, reduces the force on the structure, and improves the overall stability and seismic resistance of the system.
[0023] 2. In the utility model, the hammer body of the shock-proof hammer can be installed or disassembled through the cooperation of the threaded groove, the threaded rod, the elastic rod, the hammer body and the sealing ring, so that the maintenance personnel can easily dismantle the shock-proof hammer for access, inspection and maintenance, which is convenient for timely discovery of problems and taking corresponding maintenance measures to maintain the normal operation of the shock-proof hammer. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 A three-dimensional diagram of a transmission line anti-vibration hammer proposed by the utility model;
[0025] Figure 2 This is a structural schematic diagram of an elastic rod of a transmission line anti-vibration hammer proposed by the utility model;
[0026] Figure 3 This is a structural schematic diagram of a connection block of a transmission line anti-vibration hammer proposed by the utility model;
[0027] Figure 4 This is a structural schematic diagram of a clamping plate 2 of a transmission line anti-vibration hammer proposed by the utility model;
[0028] Figure 5 for Figure 3 Enlarged view of point A in the middle.
[0029] Legend:
[0030] 1. Connecting block; 2. Clamp plate 1; 3. Clamp plate 2; 4. Fixed block 1; 5. Fixed block 2; 6. Bolt; 7. Spring 1; 8. Rubber pad; 9. Extension block; 10. Slider; 11. Sling frame; 12. Movable sling; 13. Spring 2; 14. Engaging block; 15. Threaded groove; 16. Threaded rod; 17. Elastic rod; 18. Hammer; 19. Limit block 1; 20. Sealing ring; 21. Limit block 2; 22. Friction strip. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] Reference Figure 1 , Figure 3 and Figure 4The utility model provides an embodiment: a transmission line anti-vibration hammer, including a connecting block 1, a clamping plate 2 is fixedly connected to the top of the connecting block 1, a clamping plate 2 is rotatably connected to the rear side of the top of the clamping plate 2, a fixing block 4 is fixedly connected to the front end of the clamping plate 23, a bolt 6 is threadedly connected to the internal thread of the fixing block 4, a fixing block 2 5 is threadedly connected to the bottom of the bolt 6, the fixing block 25 is fixedly connected to the front end of the clamping plate 2, a spring 7 evenly distributed is fixedly connected to the inside of the clamping plate 23, a plurality of springs 7 are fixedly connected to the bottom of rubber pads 8, extension blocks 9 are fixedly connected to the left and right sides of the top of the connecting block 1, a slider 10 is slidably connected to the top of the extension block 9, and a fixing assembly is fixedly connected to the front end of the extension block 9, the clamping plate 2 is lifted and brought close to the transmission line through the connecting block 1, and the clamping plate 2 is rotated to press against On the clamping plate 2, the fixing block 14 and the fixing block 25 are threadedly connected in sequence by bolts 6 to complete the fixation, so as to prevent the clamping plate 23 from rotating in the opposite direction and causing the power transmission line to be disengaged. Through the rebound of multiple springs 7, the rubber pad 8 clamps the transmission lines in the clamping plate 2 and the clamping plate 23 to prevent sliding. The extension block 9 is against part of the transmission line near the clamping plate 2, and the slider 10 is slid to the top of the extension block 9. Part of the transmission line is arranged between the clamping plate 23 and the slider 10 to disperse the force of the transmission line on the clamping plate 2 and the clamping plate 23. The channel diameters of the extension block 9 and the slider 10 are larger than those of the clamping plate 2 and the clamping plate 23, so that the position of the clamping plate 23 can be directly adjusted after the clamping plate 2 is rotated to open the clamping plate 2, and there is no need to repeatedly slide the slider 10 to open the extension block 9 to waste time.
[0033] Reference Figure 1 , Figure 3 and Figure 5 The fixing component includes a sling frame 11 and a locking block 14. The sling frame 11 is fixedly connected to the front end of the slider 10, and the locking block 14 is fixedly connected to the front end of the extension block 9. A movable sling 12 is slidably connected inside the sling frame 11, and the movable sling 12 is locked and connected inside the locking block 14. A spring 13 is arranged inside the sling frame 11, and the spring 13 is arranged on the outer wall of the movable sling 12. When the slider 10 slides into the extension block 9, the movable sling 12 is pulled upward, and the movable sling 12 is released after sliding in. The movable sling 12 slides downward in the sling frame 11 through the rebound of the spring 13, and finally the bottom of the movable sling 12 is locked into the locking block 14, completing the fixation of the slider 10 and the extension block 9.
[0034] Reference Figure 1-3A threaded groove 15 is provided inside the connecting block 1, and threaded rods 16 are threadedly connected on both sides of the threaded groove 15. The side walls of the two threaded rods 16 are fixedly connected with elastic rods 17, and the side walls of the two elastic rods 17 are fixedly connected with hammers 18. Sealing rings 20 are fixedly connected to the left and right sides of the connecting block 1. The bottoms of the two extension blocks 9 are fixedly connected to the limit block 21, and the outer wall of the hammer 18 is fixedly connected with uniformly distributed friction strips 22. The two threaded rods 16 enter the threaded groove 15 with this thread until they reach the limit block 19 to avoid collision. In the event of an earthquake Or when vibrated by wind, the two hammer bodies 18 vibrate through the two elastic rods 17 to make opposite-phase movements on the power transmission line, thereby achieving shock absorption of the power transmission line. The elastic rod 17 is limited by the limit block 21 to prevent the elastic rod 17 from excessively bending when vibrating and causing the hammer body 18 to hit the power transmission line. The sealing ring 20 prevents external dust or rainwater from entering and corroding the thread groove 15 and the threaded rod 16. The friction strip 22 increases the friction of the hammer body 18, so that the threaded rod 16 can enter or leave the thread groove 15 when the hammer body 18 rotates.
[0035] Working principle: When using the transmission line anti-vibration hammer, the left and right threaded rods 16 are respectively inserted into the left and right sealing rings 20, and the two hammer bodies 18 are held and rotated to make the left and right threaded rods 16 thread into the thread groove 15 until they reach the limit block 19, and then the connecting block 1 is lifted to align the clamping plate 2 with the transmission line, and the clamping plate 2 3 is rotated to rest on the clamping plate 2, and the fixing block 1 4 and the fixing block 2 5 are threadedly connected in sequence by the bolts 6 to complete the fixing of the clamping plate 2 and the clamping plate 2 3, and the rubber pad 8 is pressed against the clamping plate 2 by the rebound of multiple springs 7. The power transmission line in the clamp plate 1 2 and the clamp plate 2 3 is squeezed and tightened to prevent sliding. At this time, the power transmission line will be placed on the extension block 9, and the slider 10 will be slid into the top of the extension block 9. The spring 2 13 will rebound to make the movable belt 12 engage in the engaging block 14 to complete the fixation of the extension block 9 and the slider 10, thereby increasing the force point of the power transmission line. When the power transmission line is vibrated by an earthquake or wind, the two hammers 18 vibrate through the two elastic rods 17 to move the power transmission line in opposite phases, thereby achieving shock absorption of the power transmission line.
[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A transmission line anti-vibration hammer, comprising a connecting block (1), characterized in that: The top of the connecting block (1) is fixedly connected to a clamping plate 1 (2), the rear side of the top of the clamping plate 1 (2) is rotatably connected to a clamping plate 2 (3), the front end of the clamping plate 2 (3) is fixedly connected to a fixing block 1 (4), the inside of the fixing block 1 (4) is threadedly connected to a bolt (6), the bottom of the bolt (6) is threadedly connected to a fixing block 2 (5), the fixing block 2 (5) is fixedly connected to the front end of the clamping plate 1 (2), the inside of the clamping plate 2 (3) is fixedly connected to a uniformly distributed spring 1 (7), and the bottoms of the plurality of springs 1 (7) are fixedly connected to a rubber pad (8), the left and right sides of the top of the connecting block (1) are fixedly connected to extension blocks (9), the top of the extension block (9) is slidably connected to a slider (10), and the front end of the extension block (9) is fixedly connected to a fixing assembly.
2. A power transmission line anti-vibration hammer according to claim 1, characterized in that: The fixing assembly comprises a sliding frame (11) and a snap-fit block (14); the sliding frame (11) is fixedly connected to the front end of the slider (10); the snap-fit block (14) is fixedly connected to the front end of the extension block (9); a movable sliding frame (12) is slidably connected inside the sliding frame (11); and the movable sliding frame (12) is snap-fitted inside the snap-fit block (14).
3. A power transmission line anti-vibration hammer according to claim 1, characterized in that: A threaded groove (15) is provided inside the connection block (1), threaded rods (16) are threadedly connected to the left and right sides of the threaded groove (15), elastic rods (17) are fixedly connected to the side walls of the two threaded rods (16), hammer bodies (18) are fixedly connected to the side walls of the two elastic rods (17), and sealing rings (20) are fixedly connected to the left and right sides of the connection block (1).
4. A power transmission line anti-vibration hammer according to claim 2, characterized in that: A second spring (13) is arranged inside the said strap frame (11), and the second spring (13) is arranged on the outer wall of the movable strap (12).
5. The power transmission line anti-vibration hammer according to claim 3, characterized in that: The outer wall of the hammer body (18) is fixedly connected with uniformly distributed friction strips (22).
6. A power transmission line anti-vibration hammer according to claim 1, characterized in that: The bottoms of the two extension blocks (9) are fixedly connected to the second limiting block (21).
7. The power transmission line anti-vibration hammer according to claim 3, characterized in that: The thread groove (15) is internally fixedly connected to a limiting block (19).
8. The power transmission line anti-vibration hammer according to claim 1, characterized in that: The channel diameters of the extension block (9) and the sliding block (10) are larger than the channel diameters of the first clamping plate (2) and the second clamping plate (3).