A porcelain component of a rigid self-cleaning suspension porcelain insulator and insulator thereof

Abstract

The invention discloses a porcelain part of a rigid self-cleaning suspension porcelain insulator and an insulator thereof, which relates to the field of porcelain insulators, and includes a porcelain shed, wherein a circular hole is arranged in the middle of the porcelain shed, and the circular hole penetrates the upper and lower surfaces of the porcelain shed at the same time; a cavity is arranged inside the porcelain shed, and the middle of the cavity is connected with the middle of the circular hole; and a heat dissipation hole is arranged on the bottom surface of the porcelain shed. In the invention, a cavity is arranged inside the porcelain shed, and a heat dissipation hole is arranged on the bottom surface of the porcelain shed, and the heat dissipation hole is connected with the cavity, replacing a conventional solid porcelain insulator. The arrangement of the heat dissipation hole enables the gas environment inside and outside the porcelain shed to be connected, and the airflow is kept flowing, so that the inside and outside of the porcelain shed are heated evenly, and the problem of impurities and excessive temperature difference of the porcelain part causing cracking due to uneven heating of the porcelain shed is reduced.

Description

Technical Field

[0001] The invention relates to the field of porcelain insulators, in particular to a porcelain part of a rigid self-cleaning suspension porcelain insulator and an insulator thereof. Background Art

[0002] Rigid porcelain insulators are insulators used to rigidly support overhead line conductors and are mainly subjected to bending and compression loads.

[0003] However, the porcelain parts on the porcelain insulators are made of ceramics, which are inherently brittle. When the porcelain parts are fired and formed as a whole, their structural layers will inevitably contain some impurities that meet the particle size requirements and cannot be removed. Although there is not much impact on the overall porcelain parts, due to the different thermal expansion coefficients of impurities and porcelain parts, when the porcelain parts are heated, they are still prone to cracking. Especially when there is a lot of dust attached to the surface of the porcelain parts, the surface temperature of the porcelain parts when heated is much higher than the temperature in their internal structural layers. The temperature difference between the impurities and the porcelain parts is greater, which is more likely to cause problems such as cracking of the porcelain parts.

[0004] Therefore, it is necessary to propose a rigid self-cleaning suspension porcelain insulator and its insulator to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a porcelain part of a rigid self-cleaning suspension porcelain insulator and an insulator thereof, so as to solve the problem that when there is a lot of dust attached to the surface of the porcelain part, the surface temperature of the porcelain part when heated is much higher than the temperature in its internal structural layer, the temperature difference between the impurities and the porcelain part is greater, and it is more likely to cause the porcelain part to crack.

[0006] To achieve the above object, the present invention provides the following technical solutions: a porcelain part of a rigid self-cleaning suspension porcelain insulator, comprising a porcelain shed, wherein a circular hole is provided in the middle of the porcelain shed, and the circular hole penetrates the upper and lower surfaces of the porcelain shed at the same time;

[0007] A cavity is provided inside the porcelain shed, and the middle of the cavity is connected to the middle of the circular hole;

[0008] The bottom surface of the porcelain shed is provided with heat dissipation holes, and a plurality of the heat dissipation holes are provided. The plurality of heat dissipation holes are distributed at equal angles along the axis of the porcelain shed, and the heat dissipation holes are connected with the cavity.

[0009] Preferably, a hollow circular shell is provided in the heat dissipation hole, and the hollow circular shell is connected to the heat dissipation hole by threaded fitting, and a filter cotton plate is rotatably connected to the inner wall of the hollow circular shell through a hinge shaft, a pair of filter cotton plates are movably fitted to each other at one end away from the hinge shaft, and an inner limit plate is movably fitted to the side of the filter cotton plate close to the cavity, and the inner limit plate is fixedly welded to the inner wall of the hollow circular shell, and an elastic strip is fixedly connected to the side of the filter cotton plate away from the cavity, and one end of the elastic strip away from the filter cotton plate is fixedly connected to the inner wall of the hollow circular shell.

[0010] The present invention also discloses a rigid self-cleaning suspension porcelain insulator, comprising a porcelain piece of the rigid self-cleaning suspension porcelain insulator as described above, and further comprising:

[0011] The insulating column is in a cylindrical structure, and a plurality of the porcelain umbrella skirts are provided, and the plurality of porcelain umbrella skirts are evenly distributed up and down. The insulating column moves through the circular holes on the plurality of porcelain umbrella skirts at the same time, and the porcelain umbrella skirts are rotatably arranged on the insulating column.

[0012] Preferably, a first sealing ring and a second sealing ring are fixedly provided at the outer ring of the insulating column, and a plurality of the first sealing ring and the second sealing ring are provided. The second sealing ring is movably engaged in the corresponding cavity, and the first sealing ring is movably attached to the upper surface or the lower surface of the porcelain umbrella skirt.

[0013] Preferably, a hollow chamber is provided inside the insulating column, and the hollow chamber is filled with glue material. A plurality of connecting holes are provided at the outer ring of the insulating column, one end of the connecting hole is connected to the interior of the hollow chamber, and the other end of the connecting hole is connected to the interior of the first sealing ring or the second sealing ring. The glue material filled in the hollow chamber flows through the connecting holes to the corresponding first sealing ring or the second sealing ring and expands the corresponding first sealing ring or the second sealing ring.

[0014] Preferably, the upper end of the hollow chamber passes through the upper end of the insulating column, the upper end of the insulating column is provided with an upper connecting plate, the bottom of the upper connecting plate is fixedly provided with a first threaded column, and the first threaded column is connected to the upper end of the hollow chamber by threaded fitting;

[0015] A lower steel foot is arranged at the lower end of the insulating column, a second threaded column is fixedly arranged on the upper surface of the lower steel foot, and the second threaded column is connected to the lower end of the insulating column through threaded fitting.

[0016] Preferably, an outer cleaning strip and an inner cleaning strip are connected to the outer ring of the insulating column, and both the outer cleaning strip and the inner cleaning strip are V-shaped arc strip structures. The outer cleaning strip is movably fitted on the outer surface of the porcelain umbrella skirt, and the inner cleaning strip is movably fitted on the inner wall of the cavity.

[0017] Preferably, the end of the outer cleaning strip is fixedly connected to the outer ring of the first sealing ring.

[0018] Preferably, a guide plate is fixedly provided at one end of the outer cleaning strip close to the outer edge of the porcelain shed, and the guide plate is distributed vertically.

[0019] Preferably, an adhesive layer is fixedly provided on the end of the inner cleaning strip, the adhesive layer is adhered to the insulating column or the second sealing ring, and the end of the inner cleaning strip is pressed on the surface of the second sealing ring to form a groove.

[0020] Technical effects and advantages of the present invention:

[0021] 1. In the present invention, a cavity is arranged inside the porcelain shed, and a heat dissipation hole is arranged on the bottom surface of the porcelain shed. The heat dissipation hole is connected with the cavity, replacing the conventional solid porcelain insulator. The heat dissipation hole is arranged so that the gas environment inside and outside the porcelain shed is kept connected, and the air flow is kept flowing, so that the inside and outside of the porcelain shed are heated evenly, and the problem of impurities and excessive temperature difference of porcelain parts causing cracking due to uneven heating of the porcelain shed is reduced;

[0022] 2. The porcelain shed and insulating column can be produced separately, which improves the production efficiency;

[0023] 3. The number of porcelain sheds can be spliced ​​at will, and the number and size of porcelain sheds can be set according to actual needs, which has strong applicability;

[0024] 4. The porcelain shed or insulating column can be replaced separately, so that when part of the structure on the porcelain insulator is damaged, the porcelain shed and insulating column can be replaced separately, reducing the use cost;

[0025] 5. In the present invention, a hollow circular shell is provided in the heat dissipation hole, which can prevent dust from entering the cavity with wind force and does not affect the air flow;

[0026] 6. Since the wind can enter the cavity through the heat dissipation holes, the wind will push the porcelain shed to rotate on the insulating column, thereby increasing the heat dissipation efficiency of the porcelain shed;

[0027] 7. When the porcelain shed rotates relative to the insulating column, the outer and inner surfaces of the porcelain shed can be cleaned by the outer cleaning strip or the inner cleaning strip, achieving the purpose of self-cleaning and solving the problem that the inner wall of the cavity is difficult to clean;

[0028] 8. Rainwater can fall along the guide plate instead of flowing to the lower section of the outer cleaning strip, which reduces the conductive path on the surface of the porcelain shed when it rains and effectively reduces the flashover phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a schematic structural diagram of the porcelain component of the rigid self-cleaning suspension porcelain insulator of the present invention from one perspective.

[0030] Figure 2 This is a schematic structural diagram of the porcelain component of the rigid self-cleaning suspension porcelain insulator of the present invention from another viewing angle.

[0031] Figure 3 It is a cross-sectional view from one angle of the porcelain component of the rigid self-cleaning suspension porcelain insulator of the present invention.

[0032] Figure 4 This is a cross-sectional view from another perspective of the porcelain component of the rigid self-cleaning suspension porcelain insulator of the present invention.

[0033] Figure 5It is a structural schematic diagram of the insulator of the present invention from one perspective.

[0034] Figure 6 This is a schematic structural diagram of the insulator of the present invention from another viewing angle.

[0035] Figure 7 It is a cross-sectional view of the insulator of the present invention.

[0036] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure in the middle.

[0037] Fig. 9 For the present invention Figure 7 Enlarged schematic diagram of the structure at point B in the middle.

[0038] Fig.10 It is a schematic structural diagram of the porcelain shed and the outer cleaning strip when they are connected in coordination with each other.

[0039] Fig.11 It is a schematic structural diagram of the inner cleaning strip and the second sealing ring when they are connected in cooperation with each other according to the present invention.

[0040] Fig.12 It is a cross-sectional view of the porcelain shed of the present invention when it is connected with the outer cleaning strip and the inner cleaning strip.

[0041] Fig.13 For the present invention Fig.11 Enlarged schematic diagram of the structure at point C in the middle.

[0042] Fig.14 It is a schematic structural diagram of the porcelain shed and the insulating column when assembled according to the present invention.

[0043] Fig.15 For the present invention Fig.14 Enlarged schematic diagram of the structure at point D in the middle.

[0044] In the figure: 1. porcelain umbrella skirt; 2. round hole; 3. heat dissipation hole; 4. cavity; 5. insulating column; 6. upper connecting plate; 7. lower steel foot; 8. first sealing ring; 9. outer cleaning strip; 10. guide plate; 11. first threaded column; 12. second threaded column; 13. second sealing ring; 14. hollow chamber; 15. inner cleaning strip; 16. connecting hole; 17. adhesive layer; 18. groove; 19. hollow circular shell; 20. hinge shaft; 21. inner limit plate; 22. filter cotton plate; 23. elastic strip. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] The present invention provides Figure 1-Figure 15 A porcelain part of a rigid self-cleaning suspension porcelain insulator shown in the figure comprises a porcelain shed 1. In order to solve the problem that when there is a lot of dust attached to the surface of the porcelain part, the surface temperature of the porcelain part when heated is much higher than the temperature in its internal structural layer, the temperature difference between impurities and the porcelain part is greater, and it is more likely to cause the porcelain part to crack. In the present invention, a cavity 4 is arranged inside the porcelain shed 1, and a heat dissipation hole 3 is arranged on the bottom surface of the porcelain shed 1. The heat dissipation hole 3 is connected with the cavity 4, replacing a conventional solid porcelain insulator. The arrangement of the heat dissipation hole 3 keeps the gas environment inside and outside the porcelain shed 1 connected, and the airflow keeps flowing, so that the inside and outside of the porcelain shed 1 are evenly heated, and the problem of cracking caused by excessive temperature difference between impurities and porcelain parts due to uneven heating of the porcelain shed 1 is reduced.

[0047] In actual use, a plurality of heat dissipation holes 3 are provided, and the plurality of heat dissipation holes 3 are distributed at equal angles along the axis of the porcelain umbrella skirt 1. Based on the setting of the plurality of heat dissipation holes 3, the airflow inside and outside the porcelain umbrella skirt 1 maintains a better circulation effect, and the uniformity of heating on the surface of the porcelain umbrella skirt 1 is increased.

[0048] The present invention also replaces the conventional method of integrally arranging the porcelain shed 1 and the insulating column 5. A circular hole 2 is arranged in the middle of the porcelain shed 1. The circular hole 2 penetrates the upper and lower surfaces of the porcelain shed 1 at the same time. The insulating column 5 can movably pass through the circular hole 2 to realize the assembly between the porcelain shed 1 and the insulating column 5. This has the following advantages:

[0049] First, since the porcelain shed 1 and the insulating column 5 can be produced separately, the production efficiency is improved, and a series of problems that need to be paid attention to in the production of porcelain insulators with complex structures are eliminated;

[0050] Second: the number of porcelain sheds 1 can be spliced ​​at will, and the number and size of the porcelain sheds 1 can be set according to actual needs, which has strong applicability, such as: it is used when porcelain sheds 1 of different sizes need to be spliced;

[0051] Thirdly, the porcelain shed 1 or the insulating column 5 can be replaced separately, so that when part of the structure on the porcelain insulator is damaged, the porcelain shed 1 and the insulating column 5 can be replaced separately, thereby reducing the use cost.

[0052] In actual production, the middle of the cavity 4 is connected with the middle of the circular hole 2, which is convenient for production. The porcelain umbrella skirt 1 is formed by molding and then fired.

[0053] It should be noted that the method of subsequently punching holes to form the heat dissipation holes 3 on the porcelain umbrella skirt 1 has a high defect rate during the firing process because the heat dissipation holes 3 have a small aperture and a large number. The firing process can also be improved to pre-open the heat dissipation holes 3, which will not be elaborated here.

[0054] Taking into account that wind can enter the interior of the cavity 4, in order to prevent dust from entering the cavity 4 with the wind, a hollow circular shell 19 is provided in the heat dissipation hole 3 in the present invention, and the hollow circular shell 19 is connected to the heat dissipation hole 3 by threaded fitting, and a filter cotton plate 22 is rotatably connected to the inner wall of the hollow circular shell 19 through a hinge shaft 20, and a pair of filter cotton plates 22 are movably fitted to each other at one end away from the hinge shaft 20, and an inner limit plate 21 is movably fitted to the side of the filter cotton plate 22 close to the cavity 4, and the inner limit plate 21 is fixedly welded to the inner wall of the hollow circular shell 19, and an elastic strip 23 is fixedly connected to the side of the filter cotton plate 22 away from the cavity 4, and one end of the elastic strip 23 away from the filter cotton plate 22 is fixedly connected to the inner wall of the hollow circular shell 19; when the wind outside the porcelain umbrella skirt 1 is transported to the inside of the cavity 4 through the heat dissipation hole 3 , the wind enters the interior of the cavity 4 after being filtered by the filter cotton plate 22, and the wind also pushes the filter cotton plate 22 to rotate to one side of the cavity 4 when being filtered by the filter cotton plate 22, but due to the obstruction of the inner limit plate 21, the two filter cotton plates 22 will remain in a closed state, thereby preventing dust from entering the cavity 4 with the wind; when the wind in the cavity 4 is discharged to the outside of the porcelain umbrella skirt 1, the wind pushes the filter cotton plate 22 to rotate to the side away from the inner limit plate 21, the filter cotton plate 22 compresses the elastic strip 23, and a pair of filter cotton plates 22 open, so that the dust inside the cavity 4 is discharged with the wind. After being discharged, the filter cotton plate 22 is reset by the elastic action of the elastic strip 23, thereby ensuring the cleanliness of the interior of the cavity 4, and will not be easily cracked or flashed due to the contamination of the inner wall of the cavity 4.

[0055] The present invention also discloses a rigid self-cleaning suspended porcelain insulator, comprising: an insulating column 5, the insulating column 5 is in a cylindrical structure, a plurality of porcelain sheds 1 are provided, the plurality of porcelain sheds 1 are evenly distributed up and down, the insulating column 5 moves through the circular holes 2 on the plurality of porcelain sheds 1 at the same time, and the present invention replaces the conventional method of arranging the porcelain sheds 1 and the insulating column 5 as one body by installing the plurality of porcelain sheds 1 on the insulating column 5 in a spliced ​​manner, so that when the porcelain sheds 1 or the insulating column 5 are damaged, they can be replaced separately, thereby saving the use cost.

[0056] Furthermore, the porcelain shed 1 is rotatably arranged on the insulating column 5. Since wind can enter the cavity 4 through the heat dissipation holes 3, the wind will push the porcelain shed 1 to rotate on the insulating column 5, thereby increasing the heat dissipation efficiency of the porcelain shed 1.

[0057] A first sealing ring 8 and a second sealing ring 13 are fixedly arranged at the outer ring of the insulating column 5, and a plurality of the first sealing ring 8 and the second sealing ring 13 are arranged. The second sealing ring 13 is movably engaged in the corresponding cavity 4, and the first sealing ring 8 is movably fitted on the upper surface or the lower surface of the porcelain shed 1; the porcelain shed 1 is limited by the first sealing ring 8 and the second sealing ring 13, which can ensure that the upper and lower positions of the porcelain shed 1 are not easily offset when the porcelain shed 1 rotates relative to the insulating column 5.

[0058] In the present invention, a hollow chamber 14 is provided inside the insulating column 5, and the hollow chamber 14 is filled with glue material. A plurality of connecting holes 16 are provided at the outer ring of the insulating column 5, and one end of the connecting hole 16 is connected with the inside of the hollow chamber 14, and the other end of the connecting hole 16 is connected with the inside of the first sealing ring 8 or the second sealing ring 13. The glue material filled in the hollow chamber 14 flows through the connecting hole 16 to the corresponding first sealing ring 8 or the second sealing ring 13 and stretches the corresponding first sealing ring 8 or the second sealing ring 13. When the glue material solidifies, the first sealing ring 8 and the second sealing ring 13 stably fix the porcelain umbrella skirt 1 on the insulating column 5. The glue material can be cement, etc., which is a common existing technology and will not be elaborated here.

[0059] The upper end of the hollow chamber 14 passes through the upper end of the insulating column 5. The upper end of the insulating column 5 is provided with an upper connecting plate 6. The bottom of the upper connecting plate 6 is fixedly provided with a first threaded column 11. The first threaded column 11 is connected to the upper end of the hollow chamber 14 through threaded fitting. The first threaded column 11 also serves the purpose of sealing the glue material and has the function of pressing the glue material so that the glue material can smoothly enter the first sealing ring 8 or the second sealing ring 13.

[0060] A lower steel foot 7 is provided at the lower end of the insulating column 5, and a second threaded column 12 is fixedly provided on the upper surface of the lower steel foot 7. The second threaded column 12 is connected to the lower end of the insulating column 5 by threaded fitting, which is a common existing setting and will not be elaborated here.

[0061] An outer cleaning strip 9 and an inner cleaning strip 15 are connected to the outer circle of the insulating column 5. Both the outer cleaning strip 9 and the inner cleaning strip 15 are V-shaped arc strip structures. The outer cleaning strip 9 is movably fitted on the outer surface of the porcelain shed 1, and the inner cleaning strip 15 is movably fitted on the inner wall of the cavity 4. When the porcelain shed 1 rotates relative to the insulating column 5, the outer surface and inner surface of the porcelain shed 1 can be cleaned by the outer cleaning strip 9 or the inner cleaning strip 15, which achieves the purpose of self-cleaning and solves the problem that the inner wall of the cavity 4 is difficult to clean.

[0062] In the specific configuration, the end of the outer cleaning strip 9 is fixedly connected to the outer ring of the first sealing ring 8, which is convenient for installation.

[0063] Furthermore, a guide plate 10 is fixedly provided at one end of the outer cleaning strip 9 near the outer edge of the porcelain shed 1. The guide plate 10 is vertically distributed. The guide plate 10 can serve the purpose of diversion. When rainwater is on the upper surface of the porcelain shed 1 or the outer cleaning strip 9, the rainwater can fall along the guide plate 10 and is not easy to flow to the lower section of the outer cleaning strip 9, thereby reducing the conductive path on the surface of the porcelain shed 1 when it rains, and effectively reducing the flashover phenomenon.

[0064] An adhesive layer 17 is fixedly provided at the end of the inner cleaning strip 15, and the adhesive layer 17 is bonded to the insulating column 5 or the second sealing ring 13. The end of the inner cleaning strip 15 is pressed on the surface of the second sealing ring 13 to form a groove 18; the setting of the second sealing ring 13 also has the purpose of limiting the position of the inner cleaning strip 15. When the porcelain shed 1 rotates, the inner cleaning strip 15 will not move with it, and the problem that the inner cleaning strip 15 is difficult to install in the cavity 4 is solved. When the porcelain shed 1 rotates, the inner cleaning strip 15 will also scrape the dust on the inner wall of the cavity 4 and discharge it from the heat dissipation hole 3, and the structural setting is relatively reasonable.

Claims

1. A porcelain component of a rigid self-cleaning suspension porcelain insulator, comprising a porcelain shed (1), characterized in that: A circular hole (2) is provided in the middle of the porcelain shed (1), and the circular hole (2) penetrates both the upper and lower surfaces of the porcelain shed (1); A cavity (4) is provided inside the porcelain shed (1), and the middle of the cavity (4) is connected to the middle of the circular hole (2); The bottom surface of the porcelain shed (1) is provided with a heat dissipation hole (3), a plurality of the heat dissipation holes (3) are provided, the plurality of heat dissipation holes (3) are distributed at equal angles along the axis of the porcelain shed (1), and the heat dissipation holes (3) are connected to the cavity (4); A hollow circular shell (19) is arranged in the heat dissipation hole (3), and the hollow circular shell (19) is connected to the heat dissipation hole (3) by threaded fitting. A filter cotton plate (22) is rotatably connected to the inner wall of the hollow circular shell (19) by a hinge shaft (20). One end of a pair of filter cotton plates (22) away from the hinge shaft (20) is movably fitted to each other. An inner limit plate (21) is movably fitted to one side of the filter cotton plate (22) close to the cavity (4). The inner limit plate (21) is fixedly welded to the inner wall of the hollow circular shell (19). An elastic strip (23) is fixedly connected to one side of the filter cotton plate (22) away from the cavity (4). One end of the elastic strip (23) away from the filter cotton plate (22) is fixedly connected to the inner wall of the hollow circular shell (19).

2. A rigid self-cleaning suspension porcelain insulator, characterized in that: The porcelain component of the rigid self-cleaning suspension porcelain insulator according to claim 1 further comprises: An insulating column (5) is provided, wherein the insulating column (5) is in a cylindrical structure, a plurality of the porcelain sheds (1) are provided, and the plurality of porcelain sheds (1) are distributed at equal distances up and down, the insulating column (5) simultaneously moves through the circular holes (2) on the plurality of porcelain sheds (1), and the porcelain sheds (1) are rotatably arranged on the insulating column (5).

3. A rigid self-cleaning suspension porcelain insulator according to claim 2, characterized in that: A first sealing ring (8) and a second sealing ring (13) are fixedly arranged at the outer ring of the insulating column (5), a plurality of the first sealing ring (8) and the second sealing ring (13) are provided, the second sealing ring (13) is movably engaged in the corresponding cavity (4), and the first sealing ring (8) is movably attached to the upper surface or the lower surface of the porcelain shed (1).

4. A rigid self-cleaning suspension porcelain insulator according to claim 3, characterized in that: The insulating column (5) is provided with a hollow chamber (14) inside, and the hollow chamber (14) is filled with adhesive material. A plurality of connecting holes (16) are provided at the outer ring of the insulating column (5), one end of the connecting hole (16) is connected to the inside of the hollow chamber (14), and the other end of the connecting hole (16) is connected to the inside of the first sealing ring (8) or the second sealing ring (13). The adhesive material filled in the hollow chamber (14) flows through the connecting holes (16) to the corresponding first sealing ring (8) or the second sealing ring (13) and expands the corresponding first sealing ring (8) or the second sealing ring (13).

5. A rigid self-cleaning suspension porcelain insulator according to claim 4, characterized in that: The upper end of the hollow chamber (14) passes through the upper end of the insulating column (5), the upper end of the insulating column (5) is provided with an upper connecting plate (6), the bottom of the upper connecting plate (6) is fixedly provided with a first threaded column (11), and the first threaded column (11) is connected to the upper end of the hollow chamber (14) by threaded engagement; The lower end of the insulating column (5) is provided with a lower steel foot (7), and the upper surface of the lower steel foot (7) is fixedly provided with a second threaded column (12), and the second threaded column (12) is connected to the lower end of the insulating column (5) by threaded engagement.

6. A rigid self-cleaning suspension porcelain insulator according to claim 3, characterized in that: An outer cleaning strip (9) and an inner cleaning strip (15) are connected to the outer ring of the insulating column (5); the outer cleaning strip (9) and the inner cleaning strip (15) are both V-shaped arc strip structures; the outer cleaning strip (9) is movably fitted on the outer surface of the porcelain shed (1), and the inner cleaning strip (15) is movably fitted on the inner wall of the cavity (4).

7. A rigid self-cleaning suspension porcelain insulator according to claim 6, characterized in that: The end of the outer cleaning strip (9) is fixedly connected to the outer ring of the first sealing ring (8).

8. The rigid self-cleaning suspension porcelain insulator according to claim 6, characterized in that: A guide plate (10) is fixedly arranged at one end of the outer cleaning strip (9) close to the outer edge of the porcelain umbrella skirt (1), and the guide plate (10) is distributed vertically.

9. The rigid self-cleaning suspension porcelain insulator according to claim 6, characterized in that: An adhesive layer (17) is fixedly provided at the end of the inner cleaning strip (15), and the adhesive layer (17) is bonded to the insulating column (5) or the second sealing ring (13). The end of the inner cleaning strip (15) is pressed on the surface of the second sealing ring (13) to form a groove (18).

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