Long-rod-shaped porcelain insulator and manufacturing method thereof

Abstract

The invention discloses a long-rod-shaped porcelain insulator and a manufacturing method thereof, and relates to the field of porcelain insulators, the long-rod-shaped porcelain insulator comprises a rod-shaped sheath, a core rod and a glass fiber reinforced plastic pipe sleeve, the core rod is sleeved with the glass fiber reinforced plastic pipe sleeve, the glass fiber reinforced plastic pipe sleeve is sleeved with the rod-shaped sheath, a center groove is formed in the top end of the core rod, a first through hole is formed in the outer side of the core rod, and a second through hole is formed in the outer side of the core rod. When the first metal outer sleeve, the second metal outer sleeve, the glass fiber reinforced plastic pipe sleeve, the core rod and the rod-shaped sheath are assembled, epoxy resin is injected into the discharging hole, enters the center groove and flows between the glass fiber reinforced plastic pipe sleeve and the core rod through the first through hole and the corresponding second through hole. And the water flows into the space between the glass steel pipe sleeve and the rod-shaped sheath, so that the two adjacent parts are connected, the gap between the parts is filled, the connection strength and stability are improved, and mutual movement and friction between the two parts due to the existence of the gap are avoided.

Description

Technical Field

[0001] The present invention relates to the field of porcelain insulators, and in particular to a long rod-shaped porcelain insulator and a manufacturing method thereof. Background Art

[0002] Insulators are devices installed between conductors at different potentials, or between a conductor and a grounded structure, capable of withstanding voltage and mechanical stress. Insulators come in a wide variety of types and shapes. While their structures and appearances vary significantly, they all consist of two main components: an insulating element and connecting hardware. The insulating element is made of electrical ceramics, which are baked from quartz, feldspar, and clay. Porcelain insulators are typically coated with enamel to enhance mechanical strength, prevent water infiltration, and improve surface smoothness. Porcelain insulators are the most commonly used of all types.

[0003] Existing porcelain insulators include a core rod and a sheath surrounding the core rod. Since the core rod and the sheath are two components that are butt-jointed and installed, a gap is left between the core rod and the sheath. Generally, adhesive is first filled inside the sheath before the core rod is placed in. In this way, the core rod squeezes the adhesive, which easily causes uneven distribution of the adhesive.

[0004] Therefore, it is necessary to propose a long rod-shaped porcelain insulator and a manufacturing method thereof to solve the above problems. Summary of the Invention

[0005] The present invention aims to provide a long rod-shaped porcelain insulator and a method for manufacturing the same, so as to solve the problem that in existing porcelain insulators, which include a core rod and a sheath surrounding the core rod, a gap is left between the core rod and the sheath because the core rod and the sheath are two components that are butt-jointed and installed. Generally, adhesive is first filled into the sheath before the core rod is placed in it. In this way, the core rod squeezes the adhesive, which easily causes uneven distribution of the adhesive.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a long rod-shaped porcelain insulator, comprising a rod-shaped sheath, a core rod, and a glass fiber reinforced plastic (FRP) sleeve, wherein the FRP sleeve is sleeved on the outside of the core rod, and the rod-shaped sheath is sleeved on the outside of the FRP sleeve, a center groove is formed at the top of the core rod, a first through hole is formed on the outside of the core rod, the first through hole is connected to the center groove, a second through hole is formed on the outside of the FRP sleeve corresponding to the position of the first through hole, a through hole is formed on the inner wall of the rod-shaped sheath along the height direction, one end of the through hole simultaneously penetrates the outside of the rod-shaped sheath, and epoxy resin is poured into the center groove;

[0007] An elastic plug is provided in the through hole, a transparent protective tube is attached to the outside of the through hole, and one end of the elastic plug extends into the transparent protective tube;

[0008] The top and bottom ends of the rod-shaped sheath are both threadedly mounted with a first metal jacket and a second metal jacket. The first metal jacket and the second metal jacket are provided with slots on opposite sides for the two ends of the glass fiber reinforced plastic pipe sleeve to extend into.

[0009] Preferably, a junction block is fixed on the top of the second metal jacket, a wire groove is provided on the top of the junction block, a feed hole is provided on the wire groove, the bottom end of the feed hole is connected to the top end of the central groove, a protective disc is fixed on the outside of the transparent protective tube, and the protective disc is bonded to the outside of the rod-shaped jacket;

[0010] A sleeve is installed at the top end of the discharge hole, a shock absorber is fixed inside the sleeve, the top end of the shock absorber extends out of the discharge hole, and the extended end is fixedly connected to an arc-shaped support plate.

[0011] Preferably, a fixing plate is fixed on the outside of the first metal jacket, a through slot is provided in the middle of the fixing plate, a rotating shaft is rotatably connected between the top and bottom ends of the through slot, and a reflective lens is fixedly connected to the outside of the rotating shaft.

[0012] Preferably, a protruding end is provided on the outer side of the core rod along the length direction, and there are multiple protruding ends. The multiple protruding ends are distributed around the center of the core rod, and a distance is left between two adjacent protruding ends. A slot for inserting the protruding end is provided on the fiberglass pipe sleeve, and the first through hole is opened on the protruding end.

[0013] Preferably, a plurality of the first through holes are provided, and the plurality of first through holes are distributed along the height direction of the protruding end.

[0014] Preferably, a pressure cover is provided on the top of the wiring block, and fixing bolts are installed between the two sides of the pressure cover and the wiring block. The pressure cover is arranged to be arc-shaped, and the arc-shaped pressure cover and the wire trough are combined into a circular shape. A connecting thread is provided at the bottom end of the outer side of the second metal jacket.

[0015] Preferably, a plurality of wear-resistant blocks are fixedly connected to the bottom end of the gland, and the bottom end area of the plurality of wear-resistant blocks is smaller than the top end area.

[0016] Preferably, a mounting groove is provided on the outer side of the second metal jacket, and a fluorescent strip is fixed in the mounting groove.

[0017] Preferably, a first umbrella skirt and a second umbrella skirt are fixed to the outside of the rod-type sheath, a distance is left between the first umbrella skirt and the second umbrella skirt, and the first umbrella skirt is arranged above the second umbrella skirt, the diameter of the first umbrella skirt is larger than the diameter of the second umbrella skirt, and a plurality of the first umbrella skirt and the second umbrella skirt are provided.

[0018] The present invention also discloses a method for manufacturing a long rod-shaped porcelain insulator, comprising the following steps:

[0019] The first step is to use weathering steel to forge the first metal jacket and the second metal jacket, and then perform hot-dip galvanizing for corrosion protection;

[0020] The second step is to use FRP material to make a FRP tube sleeve, and arrange the FRP tube sleeve on the outside of the core rod, and then insert the FRP tube sleeve and the core rod into the rod-shaped sheath of alumina ceramic;

[0021] Step 3: Install the first metal jacket and the second metal jacket at both ends of the rod-shaped jacket, and inject epoxy resin into the feed hole to glue the core rod, the fiberglass sleeve, and the rod-shaped jacket together to form a protective layer. Insert an elastic plug into the through hole, and glue a transparent protective tube to one end of the through hole.

[0022] Step 4: Install the vibration motor into the mounting groove first. After the epoxy resin is glued, remove the vibration motor and glue the fluorescent strip into the mounting groove.

[0023] Technical effects and advantages of the present invention:

[0024] 1. After the first metal jacket, the second metal jacket, the FRP tube sleeve, the core rod and the rod-type sleeve are assembled, epoxy resin is injected into the blanking hole. The epoxy resin enters the center groove and flows through the first through hole and the corresponding second through hole into the space between the FRP tube sleeve and the core rod, and into the space between the FRP tube sleeve and the rod-type sleeve, so that the two adjacent components are connected, the gap between the components is filled, the connection strength and stability are improved, and the gap is avoided, which causes the two components to move and rub against each other.

[0025] 2. Epoxy resin can form a protective layer between the FRP sleeve and the core rod, and between the FRP sleeve and the rod-type sleeve. The two protective layers can increase the overall insulation of the porcelain insulator. After the epoxy resin is glued, the epoxy resin will fill the center groove and the blanking hole, making the center groove and the blanking hole solid and completing the isolation from the outside world.

[0026] 3. Since the epoxy resin will automatically fall with gravity and evenly cover the inside of the gap, and part of the epoxy resin will enter the inside of the through hole. One end of the through hole will also penetrate the outside of the rod-type sleeve. The epoxy resin will pass through the first through hole, the second through hole and the through hole to form a whole connecting the FRP pipe sleeve, the core rod and the rod-type sleeve, thereby improving the firmness between the FRP pipe sleeve, the core rod and the rod-type sleeve.

[0027] 4. If the epoxy resin is filled evenly, it will overflow through the through-holes. According to the filling conditions of epoxy resin in through-holes at different heights, personnel can detect from the outside whether the epoxy resin is evenly filled inside the rod-type sheath. If no epoxy resin is discharged from the through-holes at a certain height, it indicates that the epoxy resin is not filled evenly at this height. The injection amount of epoxy resin can be increased as needed to reduce the time for later inspections and improve efficiency. At the same time, epoxy resin can be injected from the through-holes to improve the filling efficiency of epoxy resin or increase the filling integrity at a certain height.

[0028] 5. In the actual operation of the present invention, when the epoxy resin is being input, the elastic plug can block the through hole. When the epoxy resin reaches the through hole, it will overflow from the inside of the through hole. At this time, the epoxy resin will squeeze the elastic plug and squeeze the elastic plug out into the inside of the transparent protective tube. The elastic plug is blocked by the transparent protective tube and will not continue to fall. The blocking of the elastic plug can prevent excess epoxy resin from being discharged, ensuring that there is enough time for the epoxy resin to dry and form.

[0029] 6. By setting a slot corresponding to the protruding end, the FRP sleeve and the core rod are easily plugged into each other, and relative movement between the FRP sleeve and the core rod can be avoided. At the same time, because epoxy resin is added, the first through hole and the corresponding second through hole are connected, avoiding up and down movement between the FRP sleeve and the core rod, and filling the gap between the FRP sleeve and the core rod to complete the docking and reduce errors.

[0030] 7. During the installation of porcelain insulators, a vibration motor is first placed in the installation groove. The vibration of the vibration motor can speed up the falling speed of the epoxy resin, so that the epoxy resin can be more evenly distributed between the glass fiber reinforced plastic pipe sleeve, core rod and rod-type sheath. After the epoxy resin is bonded, the vibration motor can be removed and the fluorescent strip can be installed inside the installation groove with glue to fill the gap in the installation groove. The fluorescent strip can also be used to increase the reminder function of the actual use of the porcelain insulator. By installing the fluorescent strip, it can absorb light energy during the day and emit light at night, which is convenient for maintenance personnel to quickly find the location of the porcelain insulator at night. When a fault occurs, the maintenance efficiency is accelerated. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of a long rod-shaped porcelain insulator from one perspective of the present invention.

[0032] Figure 2 It is a structural schematic diagram of the core rod and the glass fiber reinforced plastic tube sleeve of the present invention.

[0033] Figure 3 It is a schematic structural diagram of the protruding end, the first through hole and the second through hole of the present invention.

[0034] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of point A in the middle.

[0035] Figure 5 For the present invention Figure 2 Enlarged schematic diagram of point B in the middle.

[0036] Figure 6 For the present invention Figure 2 Enlarged schematic diagram at point C in the middle.

[0037] Figure 7 This is a schematic structural diagram of the long rod-shaped porcelain insulator of the present invention from another perspective.

[0038] Figure 8 It is a schematic structural diagram of the wear-resistant block of the present invention.

[0039] In the figure: 1. Rod-type sheath; 2. First metal jacket; 3. First umbrella skirt; 4. Second umbrella skirt; 5. Second metal jacket; 6. Terminal block; 7. Pressure cap; 8. Fixing bolt; 9. Connecting thread; 10. Core rod; 11. Fiberglass pipe sleeve; 12. Protruding end; 13. First through hole; 14. Second through hole; 15. Center groove; 16. Cutting hole; 17. Fixing plate; 18. Through groove; 19. Rotating shaft; 20. Reflective lens; 21. Through hole; 22. Shock absorber; 23. Arc support plate; 24. Sleeve; 25. Card slot; 26. Mounting slot; 27. Fluorescent strip; 28. Wear-resistant block; 29. Elastic plug; 30. Protective plate; 31. Transparent protective tube. DETAILED DESCRIPTION

[0040] The present invention provides Figures 1 to 8 The long rod-shaped porcelain insulator shown includes a rod-shaped sheath 1, a core rod 10 and a glass fiber reinforced plastic sleeve 11. The glass fiber reinforced plastic sleeve 11 is sleeved on the outside of the core rod 10, and the rod-shaped sheath 1 is sleeved on the outside of the glass fiber reinforced plastic sleeve 11. The top and bottom ends of the rod-shaped sheath 1 are both threadedly mounted with a first metal jacket 2 and a second metal jacket 5. The core rod 10 is surrounded and protected by the glass fiber reinforced plastic sleeve 11 and the rod-shaped sheath 1, which can increase the connection strength of the overall structure and are combined with each other to form a porcelain insulator. The rod-shaped sheath 1 is made of alumina ceramic.

[0041] When the first metal jacket 2 and the second metal jacket 5 are threadedly connected to the inside of the rod-type jacket 1, the first metal jacket 2 and the second metal jacket 5 also complete the encirclement protection of the two ends of the glass fiber reinforced plastic pipe sleeve 11, and fix the two ends of the glass fiber reinforced plastic pipe sleeve 11, and install them with threads, which is easy to install and has higher connection strength.

[0042] A junction block 6 is fixed to the top of the second metal jacket 5 , and a wire groove is provided on the top of the junction block 6 , in which cables can be placed.

[0043] A central groove 15 is provided at the top of the core rod 10, and a first through hole 13 is provided on the outside of the core rod 10. The first through hole 13 is connected to the central groove 15. A second through hole 14 corresponding to the position of the first through hole 13 is provided on the outside of the fiberglass sleeve 11. A through hole 21 is provided on the inner wall of the rod-type jacket 1 along the height direction. Epoxy resin is poured in the central groove 15. One end of the through hole 21 also penetrates the outside of the rod-type jacket 1, that is, one end of the through hole 21 is connected to the outside.

[0044] The first metal jacket 2 and the second metal jacket 5 are provided with a slot 25 on the opposite side for the two ends of the glass fiber reinforced plastic pipe sleeve 11 to extend into. A feed hole 16 is provided on the wire trough, and the bottom end of the feed hole 16 is connected to the top end of the center groove 15.

[0045] In the actual operation of the present invention, after the first metal jacket 2, the second metal jacket 5, the FRP tube sleeve 11, the core rod 10 and the rod-type jacket 1 are assembled, epoxy resin is injected into the blanking hole 16, and the epoxy resin enters the center groove 15 and flows into the space between the FRP tube sleeve 11 and the core rod 10, and into the space between the FRP tube sleeve 11 and the rod-type jacket 1 through the first through hole 13 and the corresponding second through hole 14, so that the two adjacent components are connected, the gap between the components is filled, the connection strength and stability are improved, the existence of gaps is avoided, and the two components move relative to each other, move up and down, and rub against each other.

[0046] Furthermore, the epoxy resin can form a protective layer between the FRP sleeve 11 and the core rod 10, and between the FRP sleeve 11 and the rod-type sleeve 1. The two protective layers can increase the overall insulation of the porcelain insulator. After the epoxy resin is glued, the epoxy resin will fill the center groove 15 and the blanking hole 16, making the center groove 15 and the blanking hole 16 solid and completing isolation from the outside world.

[0047] If the epoxy resin is filled evenly, the epoxy resin will overflow through the through-hole 21. According to the filling conditions of the epoxy resin in the through-holes 21 at multiple different heights, personnel can detect from the outside whether the epoxy resin is evenly filled inside the rod-shaped sheath 1. If no epoxy resin is discharged from the through-hole 21 at a certain height, it indicates that the epoxy resin is not evenly filled at this height. The injection amount of epoxy resin can be increased as needed to reduce the time for personnel to conduct later inspections and improve efficiency.

[0048] The overflowed epoxy resin can be polished or wiped to keep it flush with the outer side of the rod-shaped sheath 1 to avoid bulges. The filled epoxy resin will seal the through hole 21.

[0049] Since the epoxy resin will automatically fall due to gravity and evenly cover the inside of the gap, and part of the epoxy resin will enter the inside of the through hole 21, the epoxy resin will pass through the first through hole 13, the second through hole 14 and the through hole 21 to form a whole connecting the glass fiber reinforced plastic pipe sleeve 11, the core rod 10 and the rod-type sheath 1, thereby improving the firmness between the glass fiber reinforced plastic pipe sleeve 11, the core rod 10 and the rod-type sheath 1.

[0050] An elastic plug 29 is provided in the through hole 21, and a transparent protective tube 31 is pasted on the outside of the through hole 21. One end of the elastic plug 29 extends into the transparent protective tube 31. It should be noted that a protective disc 30 is fixed to the outside of the transparent protective tube 31, and the protective disc 30 is bonded to the outside of the rod-type sheath 1. In actual installation, the elastic plug 29 is first inserted into the through hole 21, and then one end of the transparent protective tube 31 is connected to the through hole 21, and finally the protective disc 30 is bonded to the outside of the rod-type sheath 1.

[0051] In the actual operation of the present invention, when the epoxy resin is being input, the elastic plug 29 can block the through hole 21. When the epoxy resin reaches the position of the through hole 21, it will overflow from the inside of the through hole 21. At this time, the epoxy resin will squeeze the elastic plug 29 and squeeze the elastic plug 29 out into the inside of the transparent protective tube 31. The elastic plug 29 is blocked by the transparent protective tube 31 and will not fall. The blocking of the elastic plug 29 can prevent excess epoxy resin from being discharged, ensuring that there is enough time for the epoxy resin to solidify.

[0052] In actual use, epoxy resin may also be injected into the rod-shaped sheath 1 through the through hole 21 .

[0053] It should be noted that the elastic plug 29 can be set to a bright color, such as red. When the red elastic plug 29 extends out of the through hole 21 and stays inside the transparent protective tube 31, it is easy for people to see it quickly and quickly know that the epoxy resin in this area is evenly filled and the internal pressure is also uniform.

[0054] When the epoxy resin is dried and formed, the elastic plug 29 and the transparent protective tube 31 can be removed.

[0055] A sleeve 24 is installed at the top end of the discharge hole 16, and a shock absorber 22 is fixed inside the sleeve 24. The top end of the shock absorber 22 extends out of the discharge hole 16, and the extended end is fixedly connected to an arc-shaped support plate 23. A pressure cover 7 is provided at the top end of the terminal block 6, and fixing bolts 8 are installed between the two sides of the pressure cover 7 and the terminal block 6. The fixing bolts 8 can connect the pressure cover 7 and the terminal block 6. By tightening the fixing bolts 8, the pressure cover 7 can be close to the terminal block 6, and the cables placed in the cable trough can be pressed and fixed.

[0056] The gland 7 is configured to be arc-shaped, and the arc-shaped gland 7 and the wire trough are combined to form a circle. A connecting thread 9 is provided at the bottom end of the outer side of the second metal jacket 5 .

[0057] It should be noted that the shock absorber 22 can use a damping and spring structure. After the cable is supported inside the cable trough, the top of the cable can be fixed by the pressure cover 7. After the epoxy resin is bonded, the sleeve 24 can be inserted into the discharge hole 16. The sleeve 24 can be fixed by the filled epoxy resin. The arc-shaped support plate 23 supports the bottom end of the cable. When the cable is affected by wind and shakes up and down, the shock absorber 22 can play a buffering and protective role.

[0058] A plurality of wear-resistant blocks 28 are fixedly connected to the bottom end of the gland 7 , and the bottom end area of the plurality of wear-resistant blocks 28 is smaller than the top end area.

[0059] By providing a plurality of wear-resistant blocks 28 , the friction between the upper surface of the cable can be increased, thereby improving the fixing strength, and at the same time, it can be prevented that the cable directly rubs against the gland 7 and causes damage to the cable.

[0060] A protruding end 12 is provided on the outside of the core rod 10 along the length direction. There are multiple protruding ends 12, and the multiple protruding ends 12 are distributed around the center of the core rod 10, and a distance is left between two adjacent protruding ends 12. A slot for inserting the protruding end 12 is provided on the fiberglass pipe sleeve 11, and a first through hole 13 is provided on the protruding end 12. There are multiple first through holes 13, and the multiple first through holes 13 are distributed along the height direction of the protruding end 12.

[0061] By providing a corresponding slot at the protruding end 12, the FRP pipe sleeve 11 and the core rod 10 are facilitated to be plugged into each other, and relative movement between the FRP pipe sleeve 11 and the core rod 10 can be avoided. At the same time, because epoxy resin is added, the first through hole 13 and the corresponding second through hole 14 are connected, avoiding up and down movement between the FRP pipe sleeve 11 and the core rod 10, and filling the gap between the FRP pipe sleeve 11 and the core rod 10 to complete the docking and reduce errors.

[0062] A fixing plate 17 is fixed to the outside of the first metal jacket 2 , a through slot 18 is defined in the middle of the fixing plate 17 , a rotating shaft 19 is rotatably connected between the top and bottom ends of the through slot 18 , and a reflective lens 20 is fixedly connected to the outside of the rotating shaft 19 .

[0063] In the actual operation of the present invention, when the wind passes through the inside of the through slot 18, it will push the reflective lens 20 to rotate. When there is sunshine, the reflective lens 20 will refract the sunlight in parallel at high altitude, thereby driving away birds. Due to the high light, it will not affect pedestrians on the road. If it is cloudy, the wind will blow the reflective lens 20 to rotate and make a sound to prevent birds from approaching.

[0064] An installation groove 26 is provided on the outside of the second metal jacket 5, and a fluorescent strip 27 is fixed in the installation groove 26. By installing the fluorescent strip 27, it can absorb light energy during the day and emit light at night, making it convenient for maintenance personnel to quickly find the position of the porcelain insulator at night, and speeding up the maintenance efficiency when a fault occurs.

[0065] The first umbrella skirt 3 and the second umbrella skirt 4 are fixed to the outside of the rod-type sheath 1. There is a distance between the first umbrella skirt 3 and the second umbrella skirt 4, and the first umbrella skirt 3 is arranged above the second umbrella skirt 4. The diameter of the first umbrella skirt 3 is larger than the diameter of the second umbrella skirt 4. There are multiple first umbrella skirts 3 and second umbrella skirts 4.

[0066] The present invention also discloses a method for manufacturing a long rod-shaped porcelain insulator, comprising the following steps:

[0067] S1. Forging the first metal jacket 2 and the second metal jacket 5 with weathering steel and performing hot-dip galvanizing for corrosion protection to increase service life;

[0068] S2, using glass fiber reinforced plastic material to make a glass fiber reinforced plastic sleeve 11, and the glass fiber reinforced plastic sleeve 11 is placed on the outside of the core rod 10, and then the glass fiber reinforced plastic sleeve 11 and the core rod 10 are inserted into the rod-shaped sheath 1 made of silicone rubber material;

[0069] S3. Install the first metal jacket 2 and the second metal jacket 5 at both ends of the rod-shaped jacket 1, and inject epoxy resin into the feed hole 16 to bond the core rod 10, the fiberglass sleeve 11, and the rod-shaped jacket 1 to form a protective layer, completing the connection. Insert the elastic plug 29 into the through hole 21, and adhere a transparent protective tube 31 to one end of the through hole 21.

[0070] S4. First install the vibration motor into the installation groove 26. After the epoxy resin is glued, remove the vibration motor and glue the fluorescent strip 27 into the installation groove 26. It should be noted that during the installation of the porcelain insulator, the vibration motor is first placed in the installation groove 26. The vibration of the vibration motor can accelerate the falling speed of the epoxy resin, so that the epoxy resin can be more evenly distributed between the glass fiber reinforced plastic pipe sleeve 11, the core rod 10 and the rod-type sheath 1. After the epoxy resin is glued, the vibration motor can be removed and the fluorescent strip 27 can be installed inside the installation groove 26 with glue to fill the gap in the installation groove 26. The fluorescent strip 27 can also be used to increase the prompt function of the actual use of the porcelain insulator.

Claims

1. A long rod-shaped porcelain insulator, comprising a rod-shaped sheath (1), a core rod (10) and a glass fiber reinforced plastic sleeve (11), characterized in that: The glass fiber reinforced plastic pipe sleeve (11) is sleeved on the outside of the core rod (10), and the rod-type sheath (1) is sleeved on the outside of the glass fiber reinforced plastic pipe sleeve (11). A center groove (15) is provided at the top of the core rod (10), and a first through hole (13) is provided on the outside of the core rod (10). The first through hole (13) and the center groove (15) are connected. A second through hole (14) corresponding to the position of the first through hole (13) is provided on the outside of the glass fiber reinforced plastic pipe sleeve (11). A through hole (21) is provided on the inner wall of the rod-type sheath (1) along the height direction. One end of the through hole (21) simultaneously penetrates the outside of the rod-type sheath (1), and epoxy resin is poured into the center groove (15); An elastic plug (29) is provided in the through hole (21), a transparent protective tube (31) is adhered to the outside of the through hole (21), and one end of the elastic plug (29) extends into the transparent protective tube (31); The top and bottom ends of the rod-shaped sheath (1) are both threadedly mounted with a first metal jacket (2) and a second metal jacket (5), and opposite sides of the first metal jacket (2) and the second metal jacket (5) are provided with slots (25) for the two ends of the glass fiber reinforced plastic pipe sleeve (11) to extend into.

2. The long rod-shaped porcelain insulator according to claim 1, characterized in that: A junction block (6) is fixed to the top of the second metal jacket (5), a wire groove is provided on the top of the junction block (6), a feed hole (16) is provided on the wire groove, and the bottom end of the feed hole (16) is connected to the top end of the central groove (15); A sleeve (24) is installed at the top end of the discharge hole (16), a shock absorber (22) is fixed inside the sleeve (24), the top end of the shock absorber (22) extends out of the discharge hole (16), and the extended end is fixedly connected to an arc-shaped support plate (23), a protective disc (30) is fixed on the outside of the transparent protective tube (31), and the protective disc (30) and the outside of the rod-shaped protective sleeve (1) are bonded.

3. The long rod-shaped porcelain insulator according to claim 1, characterized in that: A fixing plate (17) is fixed on the outside of the first metal jacket (2), a through slot (18) is provided in the middle of the fixing plate (17), a rotating shaft (19) is rotatably connected between the top and bottom ends of the through slot (18), and a reflective lens (20) is fixedly connected to the outside of the rotating shaft (19).

4. The long rod-shaped porcelain insulator according to claim 1, characterized in that: The outer side of the core rod (10) is provided with a protruding end (12) along the length direction, and the protruding end (12) is provided with multiple protruding ends (12). The multiple protruding ends (12) are distributed around the center of the core rod (10), and a distance is left between two adjacent protruding ends (12). The glass fiber reinforced plastic pipe sleeve (11) is provided with a slot for inserting the protruding end (12), and the first through hole (13) is opened on the protruding end (12).

5. The long rod-shaped porcelain insulator according to claim 4, characterized in that: A plurality of the first through holes (13) are provided, and the plurality of first through holes (13) are distributed along the height direction of the protruding end (12).

6. The long rod-shaped porcelain insulator according to claim 1, characterized in that: A pressure cover (7) is provided at the top of the junction block (6), and fixing bolts (8) are installed between the two sides of the pressure cover (7) and the junction block (6). The pressure cover (7) is arranged in an arc shape, and the arc-shaped pressure cover (7) and the wire trough are combined into a circular shape. A connecting thread (9) is provided at the bottom end of the outer side of the second metal jacket (5).

7. The long rod-shaped porcelain insulator according to claim 6, characterized in that: A plurality of wear-resistant blocks (28) are fixedly connected to the bottom end of the gland (7), and the bottom end area of the plurality of wear-resistant blocks (28) is smaller than the top end area.

8. The long rod-shaped porcelain insulator according to claim 1, characterized in that: A mounting groove (26) is provided on the outer side of the second metal jacket (5), and a fluorescent strip (27) is fixed in the mounting groove (26).

9. The long rod-shaped porcelain insulator according to claim 1, characterized in that: A first umbrella skirt (3) and a second umbrella skirt (4) are fixed on the outside of the rod-shaped sheath (1); a spacing is left between the first umbrella skirt (3) and the second umbrella skirt (4); the first umbrella skirt (3) is arranged above the second umbrella skirt (4); the diameter of the first umbrella skirt (3) is larger than the diameter of the second umbrella skirt (4); and a plurality of the first umbrella skirt (3) and the second umbrella skirt (4) are provided.

10. A method for manufacturing a long rod-shaped porcelain insulator, characterized in that: The method for preparing the long rod-shaped porcelain insulator according to any one of claims 1 to 9 further comprises the following steps: S1, forging a first metal jacket (2) and a second metal jacket (5) using weathering steel, and performing hot-dip galvanizing for corrosion protection; S2, using glass fiber reinforced plastic material to make a glass fiber reinforced plastic pipe sleeve (11), and making the glass fiber reinforced plastic pipe sleeve (11) be sleeved on the outside of the core rod (10), and then inserting the glass fiber reinforced plastic pipe sleeve (11) and the core rod (10) into the rod-shaped sheath (1) made of silicone rubber material; S3, installing the first metal jacket (2) and the second metal jacket (5) at both ends of the rod-shaped jacket (1), injecting epoxy resin into the feed hole (16), gluing the core rod (10), the glass fiber reinforced plastic sleeve (11) and the rod-shaped jacket (1) to form a protective layer, inserting an elastic plug (29) into the through hole (21), and bonding a transparent protective tube (31) to one end of the through hole (21); S4. First, install the vibration motor into the installation groove (26). After the epoxy resin is glued, remove the vibration motor and glue the fluorescent strip (27) into the installation groove (26).

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