A disc-shaped suspension insulator

Abstract

The present application relates to the technical field of power cable accessories, in particular to a disc-shaped suspension insulator, comprising a main unit and a connecting mechanism one arranged on a composite core rod, comprising a buffer unit, a connecting mechanism two arranged on the connecting mechanism one, a buffer mechanism arranged on the connecting mechanism two and an adjusting mechanism arranged on the buffer mechanism; by arranging the buffer mechanism and the flexible connecting structure, the elastic component is used to absorb the tensile load and the vibration load through deformation, and the multi-angle rotating connection is matched with the different direction stress to ensure the impact resistance and the mechanical stability of the insulator string, and through the adjusting mechanism, the pre-tightening force and the buffer stroke of the buffer component can be flexibly adjusted, the scene adaptability of the product is improved, the specification selection cost in the line construction and operation is reduced, and the safety and stability of the power transmission line in various complex outdoor working conditions are further improved.

Description

Technical Field

[0001] This invention relates to the field of power cable accessories technology, specifically to a disc-shaped suspension insulator. Background Technology

[0002] Disc suspension insulators are core power accessories in high-voltage and ultra-high-voltage transmission lines. They mainly serve the dual functions of electrical insulation and mechanical load-bearing between high-voltage conductors and transmission towers. They are typically composed of insulating parts, metal accessories, and adhesive layers. Multiple discs are connected in series to form an insulator string. The number of discs connected in series can be flexibly adjusted according to different voltage levels. They are widely used in transmission lines in various complex environments such as plains, mountains, coastlines, plateaus, and industrial areas. In practical applications, the conductors of transmission lines undergo significant thermal expansion and contraction due to changes in ambient temperature. During the high temperatures of summer, the conductors elongate and exert a continuous tensile force on the insulator strings, while during the low temperatures of winter, the conductors contract and exert a reverse tensile force. This repeated expansion and contraction can easily lead to fatigue of the insulator metal fittings and cracking of the adhesive layer. In particular, strong winds can cause high-frequency swaying or galloping of the conductors. When ice melts, the sudden change in conductor weight creates an instantaneous impact load. Lateral or oblique tensile forces can also occur in angle towers and long-span crossing sections. These dynamic loads act directly on the rigid connection parts of traditional insulators, which can easily cause damage to the insulation components and breakage of the metal fittings, thereby causing line faults and affecting the safety and stability of transmission line operation. In view of this, we propose a disc-shaped suspension insulator. Summary of the Invention

[0003] To address the aforementioned shortcomings of existing technologies, this invention provides a disc-shaped suspension insulator that effectively solves the problem that existing insulators, due to their rigid connections, lack effective buffering and adaptability, making it difficult to cope with dynamic conditions such as conductor thermal expansion and contraction, strong wind vibration, impact loads, and multi-angle tension, which easily leads to component damage, line faults, and affects operational safety and stability.

[0004] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a disc-shaped suspension insulator, comprising a main unit, including an outer shed, a composite core rod disposed on the outer shed, and a connecting mechanism disposed on the composite core rod, comprising, The buffer unit includes a second connecting mechanism disposed on the first connecting mechanism, a buffer mechanism disposed on the second connecting mechanism, an adjustment mechanism disposed on the buffer mechanism, and a sealing mechanism disposed on the second connecting mechanism; Connection mechanism one and connection mechanism two can be used for series connection between multiple sets of insulators. The buffer mechanism is used to buffer dynamic loads such as tension and vibration on the insulator string. The adjustment mechanism is used to adjust the buffer stroke and preload of the buffer mechanism. The sealing mechanism is used to seal the buffer mechanism and the adjustment mechanism.

[0005] Furthermore, the first connecting mechanism includes a fixed pile that is fixedly connected to both ends of the composite core rod. A connector is fixedly connected to the end of the fixed pile away from the composite core rod. A spherical groove for connecting with the second connecting mechanism is provided on the side of the connector away from the fixed pile.

[0006] Furthermore, the second connecting mechanism includes a universal ball that is movably sleeved on the inner wall of the spherical groove, and a fixed head for connecting with the buffer mechanism and the sealing mechanism is fixedly connected to the surface of the universal ball.

[0007] Furthermore, the buffer mechanism includes connecting rods rotatably connected to both sides of the fixed head, and sliders are rotatably connected to the ends of the two sets of connecting rods away from the fixed head.

[0008] Furthermore, guide rods are slidably connected to the inner walls of the two sets of sliders, and two sets of springs are provided on the outside of the guide rods. The two sets of springs are fixedly connected to one side of the slider at one end away from each other.

[0009] Furthermore, both sets of springs are fixedly connected to a stop block at the end away from the slider, and the inner walls of both sets of stop blocks are slidably connected to the surface of the guide rod.

[0010] Furthermore, the sealing mechanism includes an annular frame disposed outside the buffer mechanism, the inner wall of the annular frame being fixedly connected to both ends of the guide rod.

[0011] Furthermore, a retractable insulating bladder is fixedly connected to the surface of the annular frame by two sets of sealing rings, and the end of the retractable insulating bladder away from the annular frame is fixedly connected to the surface of the fixing head by a second sealing ring.

[0012] Furthermore, the adjustment mechanism includes two sets of threaded sleeves fixedly connected to one side of the stops, and the inner walls of the two sets of threaded sleeves are threaded with bidirectional lead screws.

[0013] Furthermore, the adjustment mechanism also includes a knob disposed on one side of the annular frame, and one side of the knob is fixedly connected to one end of the bidirectional lead screw by rotating an insulated coupling that passes through the annular frame.

[0014] The technical solution provided by this invention has the following advantages compared with known public technologies: This invention utilizes a buffer mechanism and flexible connection structure to absorb tensile and vibration loads through the deformation of elastic components. Combined with multi-angle rotational connections to adapt to forces in different directions, it achieves efficient buffering of dynamic loads. This effectively prevents insulator cracking and metal accessory fatigue damage caused by rigid stress, ensuring the impact resistance and mechanical stability of the insulator string. Furthermore, the preload and buffer stroke of the buffer components can be flexibly adjusted through the adjustment mechanism, eliminating the need to replace the entire insulator. This allows it to adapt to diverse application scenarios such as extreme temperature differences, frequent strong winds, and large spans, improving the product's adaptability to various scenarios, reducing the cost of specification selection in line construction and maintenance, and further enhancing the safety and stability of transmission lines under various complex outdoor conditions. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the main unit and buffer unit structure of the present invention; Figure 3 This is a cross-sectional view of the outer umbrella skirt of the present invention; Figure 4 This is a cross-sectional view of the annular frame and the retractable insulating bladder of the present invention; Figure 5 This is a schematic diagram of the connecting mechanism 2 and the buffer mechanism of the present invention; Figure 6 This is a schematic diagram of the buffer mechanism and adjustment mechanism of the present invention.

[0017] The labels in the diagram represent: 100, main unit; 101, outer umbrella skirt; 102, connecting mechanism one; 1021, connector; 1022, spherical groove; 1023, fixing post; 103, composite core rod. 200. Buffer unit; 201. Sealing mechanism; 2011. Annular frame; 2012. Sealing ring one; 2013. Telescopic insulating bladder; 2014. Sealing ring two; 202. Adjustment mechanism; 2021. Knob; 2022. Bidirectional lead screw; 2023. Threaded sleeve; 203. Connecting mechanism two; 2031. Universal ball; 2032. Fixed head; 204. Buffer mechanism; 2041. Guide rod; 2042. Spring; 2043. Slider; 2044. Connecting rod; 2045. Stop. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] The present invention will be further described below with reference to embodiments.

[0020] like Figures 1 to 6 As shown, a disc-shaped suspension insulator includes a main body unit 100, including an outer shed 101, a composite core rod 103 disposed on the outer shed 101, and a connecting mechanism 102 disposed on the composite core rod 103. It also includes a buffer unit 200, including a connecting mechanism 203 disposed on the connecting mechanism 102, a buffer mechanism 204 disposed on the connecting mechanism 203, an adjusting mechanism 202 disposed on the buffer mechanism 204, and a sealing mechanism 201 disposed on the connecting mechanism 203. The connecting mechanism 102 and the connecting mechanism 203 can be used for series connection of multiple sets of insulators. The buffer mechanism 204 is used to buffer dynamic loads such as tension and vibration on the insulator string. The adjusting mechanism 202 is used to adjust the buffer stroke and preload of the buffer mechanism 204. The sealing mechanism 201 is used to seal. The buffer mechanism 204 and the adjustment mechanism 202 are included. The composite core rod 103 passes through the center of the outer umbrella skirt 101. The two are tightly bonded by molding process. The connecting mechanism 102 is fixedly installed at both ends of the composite core rod 103 to realize the connection between the main unit 100 and the buffer unit 200. The composite core rod 103 is made of glass fiber reinforced epoxy resin, which takes into account both high strength tensile performance and insulation. The outer umbrella skirt 101 is made of aging resistant silicone rubber. The creepage distance is extended through the multi-layer umbrella skirt structure to meet the high voltage insulation requirements. In use, multiple sets of insulators can be connected in series through the connecting mechanism 102 and the connecting mechanism 203 to form an insulator string. The buffer mechanism 204 absorbs tensile and vibration loads, the adjustment mechanism 202 adapts to the load requirements of different scenarios, and the sealing mechanism 201 blocks the intrusion of external impurities. The three work together to ensure the stable operation of the insulator string. Specifically, refer to Figures 2 to 5The first connecting mechanism 102 includes fixed posts 1023 fixedly connected to both ends of the composite core rod 103. A connector 1021 is fixedly connected to the end of the fixed post 1023 away from the composite core rod 103. A spherical groove 1022 for connecting to the second connecting mechanism 203 is provided on the side of the connector 1021 away from the fixed post 1023. The second connecting mechanism 203 includes a universal ball 2031 movably fitted into the inner wall of the spherical groove 1022. A buffer mechanism 2031 is fixedly connected to the surface of the universal ball 2031 for connecting to the buffer mechanism 203. 4. The fixing head 2032 is connected to the sealing mechanism 201; the assembly of the first connecting mechanism 102 is based on the composite core rod 103, the fixing pile 1023 is made of hot-dip galvanized steel, and is fixedly connected to both ends of the composite core rod 103 by epoxy resin adhesive. The connection strength is not lower than the rated destructive load of the insulator. The connecting head 1021 and the fixing pile 1023 are integrally formed structures, and the material is the same hot-dip galvanized steel. The inner wall of the spherical groove 1022 is smoothed to adapt to the rotation requirements of the second connecting mechanism 203. It should be noted that in the second connection mechanism 203, the universal ball 2031 is made of stainless steel. After the surface is polished, it is movably fitted into the inner wall of the spherical groove 1022. The gap between the two is controlled at 0.1-0.3mm to ensure that the universal ball 2031 can rotate at multiple angles within the spherical groove 1022 within a range of ±30°. The fixing head 2032 is welded and fixed to the universal ball 2031. The material is also stainless steel. It is used to support the installation of the buffer mechanism 204 and the sealing mechanism 201. When the insulator string is subjected to tension in different directions, the universal ball 2031 rotates synchronously in the spherical groove 1022, driving the fixing head 2032 to adjust its posture, avoiding the connection part from breaking due to rigid stress. At the same time, it cooperates with multiple sets of insulators connected in series to achieve flexible adaptation of the line direction. Specifically, refer to Figures 4 to 6The buffer mechanism 204 includes connecting rods 2044 rotatably connected to both sides of the fixed head 2032. Each of the two sets of connecting rods 2044 has a slider 2043 rotatably connected to its end away from the fixed head 2032. Guide rods 2041 are slidably connected to the inner walls of the two sets of sliders 2043. Two sets of springs 2042 are provided on the outside of the guide rods 2041. The ends of the two sets of springs 2042 away from each other are fixedly connected to one side of the slider 2043. Stops 2045 are fixedly connected to the ends of the two sets of springs 2042 away from the slider 2043. The inner walls of the two sets of stops 2045 are slidably connected to the surface of the guide rods 2041. The buffer mechanism 204 uses the guide rods 2041 as the installation reference. The guide rods 2041 are made of high-strength alloy steel and have a chrome-plated anti-corrosion treatment. The two sets of connecting rods 2044... One end of 044 is rotatably connected to both sides of the fixed head 2032 via a pin, and the other end is also rotatably connected to the slider 2043 via a pin. Wear-resistant insulating pads are provided at the pins to prevent electro-corrosion during rotation. The slider 2043 is made of insulating engineering plastic, and its inner wall has a sliding groove that matches the guide rod 2041 to ensure that the slider 2043 can slide smoothly along the guide rod 2041 without jamming. Two sets of springs 2042 are sleeved on the outside of the guide rod 2041. The springs 2042 are stainless steel compression springs. One end is welded and fixed to one side of the slider 2043, and the other end is welded and fixed to the stop block 2045. The stop block 2045 is made of alloy steel, and its inner wall is slidably connected to the guide rod 2041, and its position can be adjusted along the guide rod 2041. It should be noted that when the insulator string is subjected to tensile or vibration loads, the fixed head 2032 drives the connecting rod 2044 to swing, and the connecting rod 2044 pushes the slider 2043 to slide along the guide rod 2041 to both sides, compressing the spring 2042 to produce elastic deformation. The restoring force of the spring 2042 offsets the load impact, realizing dynamic buffering. When the load disappears, the spring 2042 drives the slider 2043 and the connecting rod 2044 to reset and return to the initial state. Specifically, refer to Figure 4 and Figure 6The sealing mechanism 201 includes an annular frame 2011 disposed outside the buffer mechanism 204. The inner wall of the annular frame 2011 is fixedly connected to both ends of the guide rod 2041. A retractable insulating bladder 2013 is fixedly connected to the surface of the annular frame 2011 by two sets of sealing rings 2012. The end of the retractable insulating bladder 2013 away from the annular frame 2011 is fixedly connected to the surface of the fixing head 2032 by a second sealing ring 2014. The sealing mechanism 201 uses the annular frame 2011 as the main support. The annular frame 2011 is made of high-strength insulating epoxy resin, and its inner wall is bolted to the guide rod 2041. The two ends of 1 are fixedly connected to form the mounting frame of the buffer mechanism 204. The surface of the annular frame 2011 is fixedly connected to the retractable insulating bladder 2013 through the sealing ring 1 2012. The retractable insulating bladder 2013 is made of weather-resistant silicone rubber, which has good elasticity and insulation. The end away from the annular frame 2011 is fixedly connected to the surface of the fixing head 2032 through the sealing ring 2 2014. The sealing ring 1 2012 and the sealing ring 2 2014 are both made of fluororubber, which has high temperature resistance, aging resistance and waterproof and dustproof properties. The sealing is achieved by compression to prevent rainwater and dust from seeping into the interior. It should be noted that the retractable insulating bladder 2013 deforms synchronously with the rotation of the fixed head 2032 and the extension and retraction of the buffer mechanism 204, always enclosing the buffer mechanism 204 and the adjustment mechanism 202. Together with the sealing effect of the sealing ring 1 2012 and the sealing ring 2 2014, it forms double protection to avoid corrosion of internal metal parts and aging of insulating parts, and ensure the long-term reliability of buffering and adjustment functions. Specifically, refer to Figures 4 to 6 The adjusting mechanism 202 includes two sets of threaded sleeves 2023 fixedly connected to one side of the stops 2045. A bidirectional lead screw 2022 is threadedly connected to the inner wall of each of the two sets of threaded sleeves 2023. The adjusting mechanism 202 also includes a knob 2021 located on one side of the annular frame 2011. One side of the knob 2021 is fixedly connected to one end of the bidirectional lead screw 2022 via an insulated coupling passing through the annular frame 2011. The bidirectional lead screw 2022 is made of alloy steel and has bidirectional threads machined on its surface, connecting to the inner wall of the two sets of threaded sleeves 2023. The threaded sleeve 2023 is made of alloy steel and is welded and fixed to the stop block 2045 to ensure that the threaded sleeve 2023 moves synchronously with the stop block 2045. The knob 2021 is made of insulating engineering plastic, such as epoxy glass fiber. One side is fixedly connected to one end of the double-acting screw 2022 through an insulating coupling. The insulating coupling is made of aging-resistant silicone rubber to avoid direct metal contact that could cause the insulation gap to break down. The insulating coupling passes through the side wall of the annular frame 2011, and a sealing gasket is set at the connection to ensure overall sealing. It should be noted that when the knob 2021 is rotated, the knob 2021 drives the bidirectional lead screw 2022 to rotate through the insulated coupling. Due to the bidirectional thread characteristics of the bidirectional lead screw 2022, the two sets of threaded sleeves 2023 will move along the bidirectional lead screw 2022 in the direction of approaching or moving away, thereby driving the stop block 2045 to slide along the guide rod 2041, adjusting the initial compression of the spring 2042. When the stop block 2045 is close to the slider 2043, the preload of the spring 2042 increases and the buffer stroke decreases. When the stop block 2045 is away from the slider 2043, the preload of the spring 2042 decreases and the buffer stroke increases, thus adapting to the load displacement requirements of different line scenarios.

[0021] The working principle of this invention is as follows: In high-voltage transmission lines, insulators are connected in series to form an insulator string. One end is connected to the crossarm of the transmission tower, and the other end suspends the high-voltage conductor. The main unit 100 serves as the core functional carrier. The composite core rod 103 is made of glass fiber reinforced epoxy resin, which has high tensile strength and can stably withstand static loads such as the weight of the conductor and the weight of ice accumulation. It can also achieve electrical isolation between the high-voltage conductor and the tower to prevent current leakage. The outer umbrella skirt 101 is made of aging-resistant silicone rubber. The multi-layer raised umbrella skirt structure extends the creepage distance and blocks the conductive path formed by rainwater. At the same time, the tilt angle of the umbrella skirt enables self-cleaning, reducing the accumulation of pollutants such as dust and salt spray, and ensuring that the insulation performance does not degrade. When the insulator string faces complex outdoor dynamic loads, the buffer unit 200 quickly starts to work and realizes load energy dissipation through the linkage of mechanical structure. In practical applications, dynamic loads are mainly caused by the thermal expansion and contraction of conductors due to temperature changes. For example, when the temperature is high in summer, the conductors elongate and generate a continuous tensile force on the insulator string. When the temperature is low in winter, the conductors contract and generate a reverse tensile force. Strong winds will drive the conductors to swing or dance at high frequency. When the ice melts, the sudden change in the weight of the conductors will form an instantaneous impact. There are also multi-angle tensions caused by the line layout. In corner towers and long-span crossings, the conductors will apply tensile forces to the side or diagonally. When these loads are applied to the insulator string, the force is transmitted to the second connection mechanism 203 of the buffer unit 200 through the first connection mechanism 102 of the main unit 100. The spherical groove 1022 of the first connection mechanism 102 and the universal ball 2031 of the second connection mechanism 203 form a flexible fit. The universal ball 2031 can rotate at multiple angles within the spherical groove 1022 within a range of ±30°, driving the fixed head 2032 to adjust its posture synchronously, thus preventing the connection part from breaking due to rigid stress. Simultaneously, the connecting rods 2044 on both sides of the fixed head 2032 swing with the load direction, pushing the slider 2043 to slide to both sides along the guide rod 2041, compressing the two sets of springs 2042 sleeved on the guide rod 2041. The springs 2042 absorb load energy through elastic deformation, converting rigid tensile force and vibration impact force into elastic potential energy, and then push the slider 2043 and connecting rod 2044 back to the initial position through the restoring force, realizing dynamic buffering, avoiding the load from acting directly on the composite core rod 103 or the connection part, and effectively reducing the risk of insulation cracking and metal accessory fatigue damage; In order to adapt to different installation environments and working conditions, the adjustment mechanism 202 can flexibly adjust the buffer parameters to ensure that the buffer effect accurately matches the actual needs. During the installation phase, the staff needs to adapt to the specific scenario of the line in advance. If it is installed in a high-altitude or cold region with extreme temperature difference, the displacement of the conductor due to thermal expansion and contraction is large. The knob 2021 can be turned clockwise to drive the bidirectional screw 2022 to rotate through the insulated coupling. Utilizing the bidirectional thread characteristics of the bidirectional screw 2022, the two sets of threaded sleeves 2023 and the connected stop 2045 are driven to move away from the slider 2043, reducing the initial compression of the spring 2042, increasing the buffer stroke, and meeting the displacement requirements of the conductor's large expansion and contraction. Conversely, if installed in mountainous or coastal areas where strong winds are frequent, it is necessary to improve the vibration resistance. The knob 2021 can be turned counterclockwise to bring the stop block 2045 closer to the slider 2043, pre-compressing the spring 2042 to increase the preload and quickly offset the impact of high-frequency vibration. On conventional plains lines, the adjustment mechanism 202 can be adjusted to the middle position to balance tension adaptation and vibration buffering. During the operation and maintenance phase, if the line conditions change, staff can find that the buffer mechanism 204 is not adaptable through inspection. After climbing the tower, they can fine-tune the preload or buffer stroke of the spring 2042 by turning the knob 2021 to ensure that the insulator string always matches the current load. There is no need to replace the entire insulator, thus reducing maintenance costs. The sealing mechanism 201 ensures the normal operation of the internal mechanical structure. The annular frame 2011 serves as a support frame and is fixed to the guide rod 2041 to form a closed installation space. The surface is connected to the retractable insulating bladder 2013 through the first sealing ring 2012. The other end of the bladder is fixed to the fixing head 2032 through the second sealing ring 2014, forming a fully enclosed protective structure. When the buffer mechanism 204 is in operation, the retractable insulating bladder 2013 extends, retracts, or bends synchronously with the rotation of the fixed head 2032 and the sliding of the slider 2043, always tightly wrapping the internal components. The sealing ring 1 2012 and sealing ring 2 2014 are made of fluororubber, which has excellent waterproof, dustproof, and aging resistance properties. They can block the infiltration of impurities such as rainwater, dust, and salt spray, and prevent the metal parts such as the guide rod 2041, spring 2042, and bidirectional screw 2022 from rusting. At the same time, they prevent the insulation performance of the insulating components from decreasing due to contamination.

[0022] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A disc-shaped suspension insulator, comprising a main body unit (100), including an outer shed (101), a composite core rod (103) disposed on the outer shed (101), and a connecting mechanism (102) disposed on the composite core rod (103), characterized in that, include, The buffer unit (200) includes a second connecting mechanism (203) disposed on the first connecting mechanism (102), a buffer mechanism (204) disposed on the second connecting mechanism (203), an adjustment mechanism (202) disposed on the buffer mechanism (204), and a sealing mechanism (201) disposed on the second connecting mechanism (203). Connection mechanism one (102) and connection mechanism two (203) can be used for series connection between multiple sets of insulators. Buffer mechanism (204) is used to buffer dynamic loads such as tension and vibration on the insulator string. Adjustment mechanism (202) is used to adjust the buffer stroke and preload of buffer mechanism (204). Sealing mechanism (201) is used to seal buffer mechanism (204) and adjustment mechanism (202).

2. A disc-shaped suspension insulator according to claim 1, characterized in that, The first connecting mechanism (102) includes a fixed post (1023) that is fixedly connected to both ends of the composite core rod (103). A connector (1021) is fixedly connected to the end of the fixed post (1023) away from the composite core rod (103). A spherical groove (1022) for connecting with the second connecting mechanism (203) is opened on the side of the connector (1021) away from the fixed post (1023).

3. A disc-shaped suspension insulator according to claim 1, characterized in that, The second connecting mechanism (203) includes a universal ball (2031) that is movably sleeved on the inner wall of the spherical groove (1022), and a fixed head (2032) for connecting with the buffer mechanism (204) and the sealing mechanism (201) is fixedly connected to the surface of the universal ball (2031).

4. A disc-shaped suspension insulator according to claim 1, characterized in that, The buffer mechanism (204) includes connecting rods (2044) that are rotatably connected to both sides of the fixed head (2032), and sliders (2043) are rotatably connected to the ends of the two sets of connecting rods (2044) away from the fixed head (2032).

5. A disc-shaped suspension insulator according to claim 4, characterized in that, The inner walls of the two sets of sliders (2043) are slidably connected with guide rods (2041), and two sets of springs (2042) are provided on the outside of the guide rods (2041). The two sets of springs (2042) are fixedly connected to one side of the sliders (2043) at opposite ends.

6. A disc-shaped suspension insulator according to claim 5, characterized in that, Both sets of springs (2042) have a stop block (2045) fixedly connected to the end away from the slider (2043), and the inner walls of both sets of stop blocks (2045) are slidably connected to the surface of the guide rod (2041).

7. A disc-shaped suspension insulator according to claim 1, characterized in that, The sealing mechanism (201) includes an annular frame (2011) disposed outside the buffer mechanism (204), and the inner wall of the annular frame (2011) is fixedly connected to both ends of the guide rod (2041).

8. A disc-shaped suspension insulator according to claim 7, characterized in that, The surface of the annular frame (2011) is fixedly connected to a retractable insulating bladder (2013) by two sets of sealing rings (2012). The end of the retractable insulating bladder (2013) away from the annular frame (2011) is fixedly connected to the surface of the fixing head (2032) by a sealing ring (2014).

9. A disc-shaped suspension insulator according to claim 1, characterized in that, The adjustment mechanism (202) includes two sets of threaded sleeves (2023) fixedly connected to one side of the two sets of stop blocks (2045), and the inner walls of the two sets of threaded sleeves (2023) are threaded with bidirectional lead screws (2022).

10. A disc-shaped suspension insulator according to claim 1, characterized in that, The adjustment mechanism (202) also includes a knob (2021) provided on one side of the annular frame (2011). The knob (2021) is fixedly connected to one end of the bidirectional lead screw (2022) by rotating an insulating coupling that passes through the annular frame (2011).

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