Line ac disc type suspension porcelain insulator

Abstract

The present application relates to the technical field of insulator, in particular to a line AC disc type suspension porcelain insulator, which comprises a main rod and a plurality of sheds, and coaxial guide holes are formed in the top of the plurality of sheds, the guide holes are coaxially connected with the main rod, a guide key strip is arranged on the main rod along the direction of the main rod, a taper is arranged at the bottom of the guide key strip, a key groove matched with the guide key strip is formed on the inner wall of the guide hole, and a current collecting part is extended downward from one side of the edge of the shed. In the use process of the present application, when the shed is caused to move downward due to the increase of the self weight caused by the accumulation of snow on the top or the attachment of ice cone on the bottom, the shed can automatically rotate at high speed, in the process, the ice cone on the shed collides with the fixed ice breaking rod, so that the ice cone is broken and removed, the risk of ice flash caused by long ice cone is avoided, and the operation reliability of the insulator is ensured; at the same time of the rotation of the shed, the scraper automatically scrapes off the dirt, snow and other attachments attached on the top surface of the shed, so that the surface self-cleaning function is realized.

Description

Technical Field

[0001] This invention relates to the field of insulator technology, specifically to a disc-type suspension porcelain insulator for AC power lines. Background Technology

[0002] In power transmission systems, transmission lines are exposed to complex and ever-changing outdoor environments for extended periods. To ensure the electrical insulation performance and mechanical stability of these lines, insulators are essential for reliable support. Suspension insulators, as key components in long-span sections of high and low voltage power distribution lines, play a crucial role in suspending conductors and maintaining insulation between conductors and towers in overhead transmission lines. Their performance directly impacts the safe and stable operation of the entire power system.

[0003] Based on their structural form, suspension insulators are mainly divided into two categories: disc suspension insulators and rod suspension insulators. Disc suspension insulators adopt a disc-shaped awning structure design. Their unique awning shape effectively increases the creepage distance and improves the flashover voltage in polluted environments. In practical applications, multiple discs are usually connected in series to form insulator strings. By precisely adjusting the string length, they can flexibly match the insulation requirements of different voltage levels. In high-voltage transmission lines, the ball-and-socket connection structure is commonly used. This structure, based on the precise fit between the ball and the socket, has significant advantages such as convenient assembly and disassembly, high mechanical strength, and stable electrical performance. It is particularly suitable for live-line working, facilitating rapid replacement and maintenance of insulators without power interruption, greatly improving the efficiency of power grid operation and maintenance and the reliability of power supply. In low-voltage distribution lines, the slotted connection structure is often used. This structure, while ensuring basic connection functions, also considers the simplicity of installation and operation and cost-effectiveness, effectively reducing the construction and maintenance costs of the lines.

[0004] Suspension insulators are mainly assembled from two parts: insulating components and metal fittings, using adhesive or mechanical clamping processes. The insulating components, as the core insulating parts, are commonly made of porcelain or glass. Porcelain insulators, with their excellent aging resistance, good thermal stability, and high mechanical strength, can operate stably for long periods under both normal and heavy load conditions, effectively resisting the erosion of insulation performance by external environmental factors and electrical stress, thus ensuring reliable power supply to transmission lines.

[0005] In conclusion, suspension insulators, with their reliable performance and flexible adaptability, have become an indispensable basic component in overhead power transmission and distribution systems. Their performance indicators directly affect the safe and stable operation of the power grid, the reliability of power supply, and the economic efficiency of power engineering construction. They occupy an irreplaceable and important position in the modern power industry and are one of the key factors ensuring the efficient, safe, and economical operation of the power system.

[0006] Chinese Patent No. CN205194447U discloses a suspension porcelain insulator, comprising an insulator body having an umbrella section and an integrally formed cylindrical head protruding from the upper center of the umbrella section, a cap fitting fixed to the outside of the head, and a core rod fixed to the inside of the head. The cap fitting has a groove on its upper part, with an opening on one side and a through hole on the other side wall. The free end of the core rod has a protrusion that matches the groove, and the protrusion has an annular buckle that passes through the through hole. The cap fitting has a sliding assembly on its upper part, which includes a sliding strip with one end abutting against the side wall of the core rod and the other end extending into the annular buckle to fix the core rod in the groove. A wave-shaped ring is attached to the inside of the head, and the core rod abuts against the wave-shaped ring. The structure is stable and has high production efficiency.

[0007] During the implementation and use of this device, when the insulator is operating under conditions of high cold, high humidity, rain, snow and ice, ice cones (ice ridges) are easily formed on the lower edge of its skirt, which can easily induce ice flashover, seriously threatening the safety and stability of the power grid. The porcelain insulator structure does not have protective measures to block the development of ice cones and lacks the ability to prevent and control insulation failure caused by icing. Summary of the Invention

[0008] In view of the above situation and to overcome the defects of the prior art, the present invention provides a disc-type suspension porcelain insulator for AC lines to solve the above problems.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A type of suspension porcelain insulator for AC lines includes a main pole and several sheds. Each shed has a guide hole coaxially formed at its top, which is coaxially connected to the main pole. A guide key is provided on the main pole along its direction, with a tapered portion at its bottom. A keyway matching the guide key is formed on the inner wall of the guide hole, allowing the sheds to slide along the main pole. A current-collecting section extends downwards from one side of the shed edge, with the shed edge height gradually decreasing towards the current-collecting section. When liquid adheres to the shed surface, it flows directionally along the shed edge to the current-collecting section under gravity, where it drips off. Under low-temperature conditions, ice cones are prevented from forming only at the current-collecting section, effectively suppressing the formation of multiple ice cones at the bottom of the sheds.

[0010] The bottom of the umbrella skirt is equipped with a power storage cylinder mechanism, and the middle of the power storage cylinder mechanism is equipped with a ball screw cylinder rotating mechanism. The main rod and the ball screw cylinder rotating mechanism are driven to cooperate. When the umbrella skirt descends, the ball screw cylinder rotating mechanism is driven to store power in the power storage cylinder mechanism. An ice crushing mechanism is provided on the main rod below the umbrella skirt. The ice crushing mechanism can break and remove ice cones at the bottom of the umbrella skirt, avoid the risk of ice flashover caused by the formation of long ice cones, and ensure the reliability of insulator operation.

[0011] Preferably, the energy storage cylinder mechanism includes an annular mounting plate disposed at the bottom of the umbrella skirt, an outer cylinder is fixedly connected to the annular mounting plate, an inner cylinder is coaxially rotatably connected to the inside of the outer cylinder, and a spiral spring is installed between the inner wall of the outer cylinder and the outer surface of the inner cylinder; when the inner cylinder rotates in the forward direction, the spiral spring is compressed to store energy.

[0012] Preferably, both ends of the main pole are provided with connecting lugs, and the two connecting lugs are respectively connected to the external tower and the conductor.

[0013] Preferably, the main rod includes a plurality of guide rods and inner rods, the guide rods and inner rods are alternately arranged, the guide rods are coaxially and slidably connected to the guide holes of the umbrella skirt, one end of the guide rod is coaxially and fixedly connected to the top end of the inner rod, the inner rod is coaxially connected to the inner cylinder, and the bottom end of the inner rod is coaxially and fixedly connected to the top end of the guide rod on the lower umbrella skirt.

[0014] Preferably, the ball screw cylinder rotating mechanism includes a sleeve fitted outside the inner rod. The inner wall of the sleeve has a spiral groove and a straight sliding groove. The top and bottom ends of the spiral groove are respectively connected to the two ends of the straight sliding groove. The inner rod inside the sleeve is provided with a ball seat. The spiral groove and the straight sliding groove are matched with the ball seat. When the umbrella skirt moves downward, the sleeve moves downward relative to the inner rod, and the ball seat slides in the spiral groove, driving the sleeve to rotate forward with the inner cylinder.

[0015] Preferably, a connecting plate is rotatably connected to the bottom of the annular mounting plate, and a bottom cover is fixedly connected to the inner rod located below the inner cylinder. A movable cylinder is provided at the bottom of the connecting plate, and the top of the bottom cover is inserted into the bottom of the movable cylinder. The outer surface of the bottom cover slides in fit with the inner wall of the movable cylinder. A first elastic element is installed between the inner bottom wall of the bottom cover and the bottom of the connecting plate. A whistle is provided at the bottom of the bottom cover, and the input end of the whistle communicates with the inside of the bottom cover. When the umbrella skirt moves downward, the bottom cover retracts into the inner cavity of the movable cylinder simultaneously, the volume of the cavity between the two decreases, the gas pressure in the cavity increases, the high-pressure gas flows out through the whistle, and a high-frequency sharp sound is generated.

[0016] Preferably, the top of the umbrella skirt is provided with an annular guide rail, and a locking component is rotatably connected to the annular guide rail. The locking component slides with the guide key bar, and a scraper is provided on the locking component. The scraper is in contact with the outer surface of the umbrella skirt. When the umbrella skirt rotates, the scraper can scrape off dust, snow and other adhering substances on the surface of the umbrella skirt.

[0017] Preferably, the ice-crushing mechanism includes a fixed ice-crushing rod installed on the bottom cover, with one side of the ice-crushing rod being conical. When the umbrella skirt rotates at high speed, the ice cones formed at the bottom of the confluence section collide with the fixed ice-crushing rod, and the ice cones are broken and removed by the impact, avoiding the risk of ice flashover caused by excessively long ice cones or excessive ice accumulation. By adopting a conical structure design on one side of the fixed ice-crushing rod, the impact contact stress can be effectively increased, the impact crushing efficiency can be enhanced, and the impact crushing and removal effect can be ensured.

[0018] Preferably, the ice-crushing mechanism includes a movable ice-crushing rod, one side of which is cone-shaped. A positioning block is provided at the bottom of the bottom cover, and a sliding rod is provided at the tail end of the movable ice-crushing rod. The movable ice-crushing rod can move along the direction of the sliding rod. The other end of the sliding rod passes through the positioning block and is provided with a baffle at its end. A second elastic element is installed between the positioning block and the baffle, and the second elastic element provides a restoring force for the movable ice-crushing rod.

[0019] Preferably, a counterweight is provided on the other side of the movable ice crusher, and an arc-shaped plate is provided at the bottom of the connecting plate. A movable groove is opened at the bottom of the arc-shaped plate, and a sliding rod between the ice crusher and the positioning block passes through the movable groove. When the umbrella skirt rotates, the inner wall of the movable groove abuts against the sliding rod, causing the movable ice crusher to rotate synchronously. When the umbrella skirt stops rotating after one revolution, the sliding rod and the movable ice crusher continue to slide along the movable groove under the action of rotational inertia, so that the movable ice crusher impacts and breaks the ice cone below the confluence.

[0020] The beneficial effects of this invention are as follows: 1. During the use of this invention, when the umbrella skirt moves downward due to the increased weight caused by snow accumulation at the top or ice cones adhering to the bottom, the umbrella skirt can automatically rotate at high speed. During this process, the ice cones on the umbrella skirt impact and collide with the fixed ice-breaking rod, thereby breaking and removing the ice cones, avoiding the risk of ice flashover caused by the formation of long ice cones, and ensuring the reliability of insulator operation. While the umbrella skirt is rotating, the scraper automatically scrapes off dirt, snow and other attachments on the top surface of the umbrella skirt, realizing the surface self-cleaning function.

[0021] 2. During the use of this invention, if a bird lands on the upper part of the umbrella skirt, causing an instantaneous increase in weight, the umbrella skirt will quickly move downwards, causing the bottom cover to retract into the inner cavity of the movable cylinder. The reduced cavity volume generates a high-pressure airflow. The high-pressure gas flows out through the whistle and produces a high-frequency sharp sound, thereby achieving the bird-repelling function, avoiding bird damage that could cause short circuits, flashover, or other faults, and ensuring the safe and stable operation of the power supply.

[0022] 3. The present invention features a movable ice-crushing rod that automatically extends when the umbrella skirt rotates at high speed. In conjunction with the counterweight, the rotational inertia of the movable ice-crushing rod is increased, allowing it to strike the ice cone with high impact force, thus ensuring reliable crushing of the ice cone. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the ice-crushing mechanism according to the first embodiment of the present invention.

[0025] Figure 3 This is a cross-sectional structural diagram of the umbrella skirt of the present invention.

[0026] Figure 4This is a schematic diagram of the structure of the sleeve of the present invention.

[0027] Figure 5 For the present invention Figure 1 A magnified structural diagram of part A in the middle.

[0028] Figure 6 For the present invention Figure 3 A magnified structural diagram of section B in the middle.

[0029] Figure 7 This is a schematic diagram of the ball bearing seat of the present invention.

[0030] Figure 8 This is a schematic diagram of the ice-crushing mechanism according to the second embodiment of the present invention.

[0031] In the attached diagram: 1. Main rod; 2. Umbrella skirt; 3. Power storage cylinder mechanism; 4. Ball screw cylinder rotation mechanism; 5. Confluence section; 6. Ice crushing mechanism; 7. Guide key strip; 8. Outer cylinder; 9. Inner cylinder; 10. Spiral spring; 11. Connecting ear; 12. Guide rod; 13. Inner rod; 14. Sleeve; 15. Spiral groove; 16. Straight slide groove; 17. Ball bearing seat; 18. Connecting plate; 19. Bottom cover; 20. Movable cylinder; 21. First elastic element; 22. Annular guide rail; 23. Clamping element; 24. Scraper; 25. Fixed ice crushing rod; 26. Movable ice crushing rod; 27. Positioning block; 28. Baffle; 29. ​​Second elastic element; 30. Slide rod; 31. Arc plate; 32. Movable groove; 33. Cone; 34. Annular mounting plate; 35. Whistle; 36. Counterweight. Detailed Implementation

[0032] The following will be for reference. Figures 1 to 8 The various embodiments of the present invention will be described in detail below. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0033] First embodiment: A type of AC line disc-type suspension porcelain insulator, such as Figure 1 , Figure 2 and Figure 7As shown, the structure includes a main pole 1 and several umbrella skirts 2. Both ends of the main pole 1 are provided with connecting lugs 11, which connect to the external tower and the conductor respectively. The tops of the multiple umbrella skirts 2 are coaxially provided with guide holes, which are coaxially connected to the main pole 1. A guide key 7 is provided along the direction of the main pole 1, and a cone 33 is provided at the bottom of the guide key 7. A keyway matching the guide key 7 is provided on the inner wall of the guide hole, allowing the umbrella skirts 2 to slide along the direction of the main pole 1. A confluence section 5 extends downwards from one side of the edge of the umbrella skirt 2. The height of the edge of the umbrella skirt 2 is designed to gradually decrease along the direction of the confluence section 5. When liquid adheres to the surface of the umbrella skirt 2, the liquid flows directionally along the edge of the umbrella skirt 2 to the confluence section 5 area under the action of gravity, and drips off there. Under low-temperature conditions, ice cones can be generated only at the confluence section 5, effectively suppressing the formation of multiple ice cones at the bottom of the umbrella skirt 2.

[0034] like Figure 3 As shown, the bottom of the umbrella skirt 2 is provided with a power storage cylinder mechanism 3, and the middle of the power storage cylinder mechanism 3 is provided with a ball screw cylinder rotating mechanism 4. The main rod 1 is driven to cooperate with the ball screw cylinder rotating mechanism 4. When the umbrella skirt 2 descends, the ball screw cylinder rotating mechanism 4 is driven to store power in the power storage cylinder mechanism 3. The power storage cylinder mechanism 3 includes an annular mounting plate 34 set at the bottom of the umbrella skirt 2. An outer cylinder 8 is fixedly connected to the annular mounting plate 34. An inner cylinder 9 is coaxially rotatably connected inside the outer cylinder 8. A spiral spring 10 is installed between the inner wall of the outer cylinder 8 and the outer surface of the inner cylinder 9. When the inner cylinder 9 rotates in the forward direction, the spiral spring 10 is compressed to store power.

[0035] like Figure 3 As shown, the main rod 1 includes several guide rods 12 and inner rods 13. The guide rods 12 and inner rods 13 are alternately arranged. The guide rods 12 are coaxially connected to the guide holes of the umbrella skirt 2 and slide in a sliding fit. One end of the guide rod 12 that passes through the umbrella skirt 2 is coaxially fixedly connected to the top end of the inner rod 13. The inner rod 13 coaxially passes through the inner cylinder 9, and the bottom end of the inner rod 13 is coaxially fixedly connected to the top end of the guide rod 12 on the lower umbrella skirt 2.

[0036] like Figure 3 , Figure 4 and Figure 6 As shown, the ball screw cylinder rotating mechanism 4 includes a sleeve 14 sleeved outside the inner rod 13. The inner wall of the sleeve 14 is provided with a spiral groove 15 and a straight sliding groove 16. The top and bottom ends of the spiral groove 15 are respectively connected to the two ends of the straight sliding groove 16. The inner rod 13 inside the sleeve 14 is provided with a ball seat 17. The spiral groove 15 and the straight sliding groove 16 are matched with the ball seat 17. When the umbrella skirt 2 moves downward, the sleeve 14 moves downward relative to the inner rod 13, and the ball seat 17 slides in the spiral groove 15, driving the sleeve 14 to rotate forward with the inner cylinder 9.

[0037] A connecting plate 18 is rotatably connected to the bottom of the annular mounting plate 34. A bottom cover 19 is fixedly connected to the inner rod 13 located below the inner cylinder 9. A movable cylinder 20 is provided at the bottom of the connecting plate 18. The top of the bottom cover 19 is inserted into the bottom of the movable cylinder 20. The outer surface of the bottom cover 19 slides in fit with the inner wall of the movable cylinder 20. A first elastic element 21 is installed between the inner bottom wall of the bottom cover 19 and the bottom of the connecting plate 18. The first elastic element 21 is a plastic spring. A whistle 35 is provided at the bottom of the bottom cover 19. The input end of the whistle 35 is connected to the inside of the bottom cover 19. When the umbrella skirt 2 moves downward, the bottom cover 19 retracts into the inner cavity of the movable cylinder 20. The volume of the cavity between the two decreases, the gas pressure in the cavity increases, and the high-pressure gas flows out through the whistle 35, producing a high-frequency sharp sound.

[0038] like Figure 1 and Figure 5 As shown, the top of the umbrella skirt 2 is provided with an annular guide rail 22, and a locking piece 23 is rotatably connected to the annular guide rail 22. The locking piece 23 is slidably engaged with the guide key 7, and the locking piece 23 can slide along the direction of the guide key 7. A scraper 24 is provided on the locking piece 23, and the scraper 24 is in contact with the outer surface of the umbrella skirt 2. When the umbrella skirt 2 rotates, the scraper 24 can scrape off dust, snow and other adhering substances on the surface of the umbrella skirt 2.

[0039] An ice-crushing mechanism 6 is provided on the main rod 1 below the umbrella skirt 2. The ice-crushing mechanism 6 includes a fixed ice-crushing rod 25 installed on the bottom cover 19. One side of the fixed ice-crushing rod 25 is cone-shaped. When the umbrella skirt 2 rotates at high speed, the ice cones formed at the bottom of the confluence part 5 collide with the fixed ice-crushing rod 25. The ice cones are broken and removed by the impact, avoiding the risk of ice flash discharge caused by excessively long ice cones or excessive ice accumulation. The cone-shaped structure design on one side of the fixed ice-crushing rod 25 can effectively increase the impact contact stress, enhance the impact crushing efficiency, and ensure the impact crushing and removal effect.

[0040] The working principle of this device is as follows: When the umbrella skirt 2 is affected by snow accumulation at the top or ice cones at the bottom, causing its weight to increase and move downward, the sleeve 14 will descend accordingly. The ball bearing seat 17 will slide along the spiral groove 15, driving the sleeve 14 to rotate in the forward direction, which in turn will drive the inner cylinder 9 to rotate synchronously and compress and store the spiral spring 10.

[0041] When the umbrella skirt 2 moves down until the guide key 7 is completely disengaged from the keyway, the circumferential limit of the umbrella skirt 2 is released, the spiral spring 10 releases its elastic potential energy, and then drives the outer cylinder 8 to rotate at high speed, thereby driving the umbrella skirt 2 to achieve instantaneous high-speed rotation.

[0042] The ice cone at the lower end of the current collector 5 rotates synchronously and impacts the fixed ice-breaking rod 25, thereby breaking and removing the ice cone, avoiding the risk of ice flashover caused by the formation of long ice cones, and ensuring the reliability of insulator operation.

[0043] It should be noted that during the descent of the umbrella skirt 2, the scraper 24 descends synchronously and always remains in contact with the upper surface of the umbrella skirt 2; when the umbrella skirt 2 rotates, the scraper 24 is kept stationary by the guide key 7 and the clip 23, thereby scraping away dirt, snow and other deposits attached to the top surface of the umbrella skirt 2, achieving the surface self-cleaning function.

[0044] After the ice cones fall off and the snow and debris on top are cleared, the weight of the umbrella skirt 2 decreases, the first elastic element 21 unfolds and pushes the annular mounting plate 34 upward, pushing the umbrella skirt 2 to rise and reset (during this process, the ball bearing seat 17 slides along the straight slide groove 16). With the setting of the cone part 33 at the lower end of the guide key bar 7, the guide key bar 7 can more easily enter the groove, thereby completing the automatic reset of the umbrella skirt 2.

[0045] When the device is in operation, if a bird lands on the upper part of the umbrella skirt 2, causing an instantaneous increase in weight, the umbrella skirt 2 will quickly move downward, causing the bottom cover 19 to retract into the inner cavity of the movable cylinder 20. The reduced cavity volume generates a high-pressure airflow, which flows out through the whistle 35 and produces a high-frequency sharp sound, thereby achieving the bird-repelling function, avoiding bird damage that could cause short circuits, flashover, or other faults, and ensuring the safe and stable operation of the power supply.

[0046] Second implementation: like Figure 8 As shown, based on the first embodiment, the ice-crushing mechanism 6 includes a movable ice-crushing rod 26. One side of the movable ice-crushing rod 26 is cone-shaped. A positioning block 27 is provided at the bottom of the bottom cover 19. A slide rod 30 is provided at the tail end of the movable ice-crushing rod 26. The other end of the slide rod 30 passes through the positioning block 27 and is provided with a baffle 28 at its end. A second elastic element 29 is installed between the positioning block 27 and the baffle 28. The second elastic element 29 provides a restoring force for the movable ice-crushing rod 26. The second elastic element 29 is a plastic spring. A counterweight block 36 is provided on the other side of the movable ice-crushing rod 26. An arc-shaped plate 31 is provided at the bottom of the connecting plate 18. An active groove 32 is opened at the bottom of the arc-shaped plate 31. The slide rod 30 between the movable ice-crushing rod 26 and the positioning block 27 passes through the active groove 32.

[0047] When the umbrella skirt 2 rotates at high speed in the first embodiment, the inner wall of the movable groove 32 abuts against the slide rod 30, causing the movable ice-crushing rod 26 to rotate synchronously. When the umbrella skirt 2 stops rotating after one revolution, the slide rod 30 and the movable ice-crushing rod 26 continue to slide along the movable groove 32 under the action of rotational inertia, so that the movable ice-crushing rod 26 impacts and breaks the ice cone below the confluence part 5.

[0048] It should be noted that when the umbrella skirt 2 drives the movable ice-crushing rod 26 to rotate at high speed, the slide bar 30 extends outward under the action of centrifugal force, causing the movable ice-crushing rod 26 to extend. At the same time, with the setting of the counterweight 36, the rotational inertia of the movable ice-crushing rod 26 can be increased, thereby enhancing the impact force when hitting the ice cone. Compared with the fixed ice-crushing structure of the first embodiment, this structure can output a higher impact force, ensuring reliable crushing of the ice cone.

[0049] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A type of AC disc-type suspension porcelain insulator, comprising a main rod (1) and several sheds (2), characterized in that, Multiple umbrella skirts (2) have guide holes coaxially opened at the top. The guide holes are coaxially connected to the main rod (1). The main rod (1) has a guide key strip (7) along its direction. The bottom of the guide key strip (7) has a cone (33). The inner wall of the guide hole has a keyway that matches the guide key strip (7). A confluence part (5) extends downward on one side of the edge of the umbrella skirt (2). The height of the edge of the umbrella skirt (2) gradually decreases along the direction close to the confluence part (5). The bottom of the umbrella skirt (2) is provided with a power storage cylinder mechanism (3), and the middle part of the power storage cylinder mechanism (3) is provided with a ball screw cylinder rotating mechanism (4). The main rod (1) and the ball screw cylinder rotating mechanism (4) are driven to cooperate. When the umbrella skirt (2) descends, the ball screw cylinder rotating mechanism (4) is driven to make the power storage cylinder mechanism (3) store power. The main rod (1) is provided with an ice crushing mechanism (6) located below the umbrella skirt (2).

2. The AC disc-type suspension porcelain insulator according to claim 1, characterized in that, The power storage cylinder mechanism (3) includes an annular mounting plate (34) set at the bottom of the umbrella skirt (2), an outer cylinder (8) is fixedly connected to the annular mounting plate (34), an inner cylinder (9) is coaxially rotatably connected inside the outer cylinder (8), and a spiral spring (10) is installed between the inner wall of the outer cylinder (8) and the outer surface of the inner cylinder (9).

3. The AC disc-type suspension porcelain insulator according to claim 1, characterized in that, Both ends of the main rod (1) are provided with connecting ears (11).

4. A disc-type suspension porcelain insulator for AC lines according to claim 2, characterized in that, The main rod (1) includes several guide rods (12) and inner rods (13). The guide rods (12) and inner rods (13) are alternately arranged. The guide rods (12) are coaxially connected to the guide holes of the umbrella skirt (2) and slide in a sliding fit. One end of the guide rod (12) that passes through the umbrella skirt (2) is coaxially fixedly connected to the top end of the inner rod (13). The inner rod (13) coaxially passes through the inner cylinder (9), and the bottom end of the inner rod (13) is coaxially fixedly connected to the top end of the guide rod (12) on the lower umbrella skirt (2).

5. A disc-type suspension porcelain insulator for AC lines according to claim 4, characterized in that, The ball screw cylinder rotating mechanism (4) includes a sleeve (14) sleeved outside the inner rod (13). The inner wall of the sleeve (14) is provided with a spiral groove (15) and a straight slide groove (16). The top and bottom ends of the spiral groove (15) are respectively connected to the two ends of the straight slide groove (16). The inner rod (13) inside the sleeve (14) is provided with a ball seat (17). The spiral groove (15) and the straight slide groove (16) are both matched with the ball seat (17).

6. A disc-type suspension porcelain insulator for AC lines according to claim 2, characterized in that, The bottom of the annular mounting plate (34) is rotatably connected to a connecting plate (18). A bottom cover (19) is fixedly connected to the inner rod (13) located below the inner cylinder (9). A movable cylinder (20) is provided at the bottom of the connecting plate (18). The top of the bottom cover (19) is inserted into the bottom of the movable cylinder (20). The outer surface of the bottom cover (19) slides with the inner wall of the movable cylinder (20). A first elastic element (21) is installed between the inner bottom wall of the bottom cover (19) and the bottom of the connecting plate (18). A whistle (35) is provided at the bottom of the bottom cover (19). The input end of the whistle (35) is connected to the inside of the bottom cover (19).

7. A disc-type suspension porcelain insulator for AC lines according to claim 1, characterized in that, The top of the umbrella skirt (2) is provided with an annular guide rail (22), and a clip (23) is rotatably connected on the annular guide rail (22). The clip (23) slides with the guide key (7). A scraper (24) is provided on the clip (23), and the scraper (24) is attached to the outer surface of the umbrella skirt (2).

8. A disc-type suspension porcelain insulator for AC lines according to claim 6, characterized in that, The ice-crushing mechanism (6) includes a fixed ice-crushing rod (25) mounted on the bottom cover (19), with one side of the fixed ice-crushing rod (25) being conical.

9. A disc-type suspension porcelain insulator for AC lines according to claim 6, characterized in that, The ice-crushing mechanism (6) includes a movable ice-crushing rod (26), one side of which is cone-shaped. The bottom of the bottom cover (19) is provided with a positioning block (27). The tail end of the movable ice-crushing rod (26) is provided with a slide rod (30). The other end of the slide rod (30) passes through the positioning block (27) and is provided with a baffle (28) at the end. A second elastic element (29) is installed between the positioning block (27) and the baffle (28).

10. A disc-type suspension porcelain insulator for AC power lines according to claim 9, characterized in that, The movable ice crusher (26) is provided with a counterweight (36) on the other side, and the bottom of the connecting plate (18) is provided with an arc plate (31). The bottom of the arc plate (31) is provided with a movable groove (32). The sliding rod (30) between the movable ice crusher (26) and the positioning block (27) passes through the movable groove (32).

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