Arrester insulating sleeve spraying tool

Abstract

The utility model discloses a spraying tool for an insulating sleeve of a lightning arrester. The spraying tool comprises a suspension device, a clamping ring, a conical head seat and the insulating sleeve of the lightning arrester, the hanging device is provided with a side wall, the clamping ring is of an annular structure, the conical head seat is of a cylindrical body structure, a hanging hole is formed in one end of the lightning arrester insulating sleeve, a conical head is arranged at the other end, away from the hanging hole, of the lightning arrester insulating sleeve, and a conical head skirt edge is axially arranged at the end, close to the hanging hole, of the conical head in a protruding mode. According to the spraying tool for the insulating sleeve of the lightning arrester, the insulating performance of the insulating sleeve of the lightning arrester can be improved, the partial discharge phenomenon is avoided, mechanical interlocking is formed by the clamping ring, the conical head skirt edge and the conical head base, the mechanical structural strength of connection is guaranteed, risks are reduced, and the spraying tool is easy and convenient to operate and safer and more reliable.

Description

Technical Field

[0001] This utility model relates to the field of power equipment safety protection technology, and in particular to a spraying tool for lightning arrester insulating bushings. Background Technology

[0002] In power systems, surge arresters are commonly used devices that protect electrical equipment from overvoltage damage. The external insulating bushing of the surge arrester prevents lightning arc breakdown and contamination, thus extending its service life. Semiconductor materials are typically sprayed onto the outer surface of the surge arrester's insulating bushing to help distribute the electric field evenly and prevent partial discharge. However, the structure of the surge arrester's insulating bushing is relatively complex, with cavities, cones, and a lower surface. In particular, the lower surface of the skirt cannot be sprayed with semiconductor material, otherwise it will affect the insulation performance of the surge arrester's insulating bushing or cause partial discharge. Therefore, it is necessary to design tooling to ensure that the semiconductor material is sprayed evenly onto the outer surface of the surge arrester's insulating bushing. Utility Model Content

[0003] This utility model discloses a lightning arrester insulating bushing spraying fixture, which aims to provide a lightning arrester insulating bushing spraying fixture capable of uniformly spraying semiconductor materials.

[0004] To achieve the above objectives, this utility model proposes a spraying fixture for surge arrester insulating bushings, used for spraying protection of surge arrester insulating bushings, comprising:

[0005] Suspension device, the suspension device having sidewalls;

[0006] One end of the surge arrester insulating bushing is provided with a suspension hole. The surge arrester insulating bushing is sleeved on the side wall of the suspension device so that the wall of the suspension hole and the suspension device are fixedly connected. The end of the surge arrester insulating bushing away from the suspension device is provided with a cone head. The end of the cone head near the suspension hole is axially provided with a cone head skirt.

[0007] A retaining ring, the retaining ring having an inner retaining ring wall and an outer retaining ring wall, the bottom of the inner retaining ring having a radially protruding retaining platform, the retaining platform forming a conical head seat hole in the circumferential direction, and the top of the inner retaining ring having a radially protruding protective platform, the protective platform forming a conical head hole in the circumferential direction.

[0008] A cone head seat, wherein the cone head seat is a cylindrical structure, the cone head seat has a cone head seat side wall and a cone head seat bottom wall, the cone head seat side wall and the cone head seat bottom wall form a sleeve groove, the cone head seat bottom wall has a through hole, and the cone head seat side wall has a cone head seat retaining groove on its outer circumferential surface away from the sleeve groove;

[0009] The cone head is tightly connected to the sleeve groove via the retaining ring, and the retaining platform is tightly connected to the cone head seat retaining groove so that the inner wall of the retaining ring abuts against the side wall of the cone head seat, and the cone head skirt abuts against the protective platform.

[0010] Preferably, the suspension device includes a plug, a fixing member, and a suspension member, wherein the fixing member is fixedly connected to the plug, and the suspension member is sleeved on the fixing member.

[0011] Preferably, the retaining ring has a ring-shaped structure, and the retaining ring includes two identical semi-rings.

[0012] Preferably, the protective platform is provided with an inclined surface, the inclined surface causing the diameter of the end of the cone-shaped hole away from the platform to be larger than the diameter of the end of the cone-shaped hole near the platform, and the diameter of the end of the cone-shaped hole near the platform to be smaller than the outer diameter of the cone.

[0013] Preferably, the plug is a columnar structure, the plug has an axial plug sidewall and a top surface perpendicular to the axial direction, the plug sidewall has a radially outwardly protruding plug platform, the top surface has a fixing hole, and the fixing member is fixedly connected to the fixing hole.

[0014] Preferably, the fastener includes a semi-threaded screw, a nut, an upper anti-wear plate, and a lower anti-wear plate. The semi-threaded screw includes a head, a bearing surface, a shank, a thread, and a guide portion. The upper anti-wear plate is sleeved on the shank and abuts against the bearing surface. The lower anti-wear plate is sleeved on the shank and spaced apart from the upper anti-wear plate. The nut is rotatably connected to the thread and abuts against the lower anti-wear plate. The semi-threaded screw is fixedly connected to the fixing hole so that the nut abuts against the plug.

[0015] Preferably, the suspension component includes a hook and a through tube, the through tube being a hollow column, and the hook being fixedly connected to the outer wall of the through tube.

[0016] Preferably, the surge arrester insulating sleeve is fitted onto the outer wall of the plug, and the plug platform abuts against the suspension hole to fix the suspension hole wall and the plug together.

[0017] Preferably, the through tube is sleeved outside the shank of the semi-threaded screw and positioned between the upper anti-wear plate and the lower anti-wear plate.

[0018] Preferably, the inner diameter of the through pipe is larger than the diameter of the rod, and the outer diameter of the through pipe is smaller than the diameter of the upper anti-wear plate.

[0019] The beneficial effects of this utility model are:

[0020] This utility model is composed of a suspension device, a retaining ring, a cone head seat, and a surge arrester insulating bushing. The suspension device is connected to the suspension hole of the surge arrester insulating bushing, ensuring a tight connection between the suspension device and the surge arrester insulating bushing. This prevents the semiconductor material from sticking to the suspension hole during the spraying process. The cone head of the surge arrester insulating bushing is fixed by the cone head seat and the retaining ring. The retaining ring's retaining platform is tightly connected to the cone head seat's retaining groove, ensuring the stability between the retaining platform and the cone head seat. The retaining ring's protective platform abuts against the cone head skirt, achieving interlocking between the retaining ring and the cone head. This prevents accidental detachment between the cone head seat and the cone head and ensures that the lower surface of the skirt is not sprayed with semiconductor material, improving the insulation performance of the surge arrester insulating bushing and preventing partial discharge. The retaining ring, cone head skirt, and cone head seat form a mechanical interlock, ensuring the mechanical structural strength of the connection, reducing risks, simplifying operation, and making it safer and more reliable. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a lightning arrester insulating bushing spraying fixture according to an embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of the plug according to an embodiment of the present invention;

[0024] Figure 3 This is a cross-sectional view of the retaining ring according to an embodiment of the present invention;

[0025] Figure 4 This is a cross-sectional view of the structure at point A in an embodiment of the present invention;

[0026] Figure 5 This is a cross-sectional view of the cone head seat according to an embodiment of the present invention;

[0027] Figure 6 This is a cross-sectional view of the structure of the surge arrester insulating bushing according to an embodiment of the present invention;

[0028] Figure 7 This is a structural schematic diagram of a fastener according to an embodiment of the present invention.

[0029] Figure 8 This is a partial cross-sectional view of a suspension component according to an embodiment of the present utility model;

[0030] Figure 9This is a partial cross-sectional view of the suspension component according to another embodiment of the present utility model;

[0031] Figure 10 This is a partial cross-sectional view of the retaining ring and cone head seat according to an embodiment of the present invention;

[0032] Figure 11 This is a partial cross-sectional view of the retaining ring and cone head seat according to another embodiment of the present invention.

[0033] In the above figures: 1. Suspension device; 10. Plug; 11. Plug sidewall; 12. Top surface; 13. Fixing hole; 14. Plug platform; 2. Snap ring; 20. Half ring; 201. Snap ring inner wall; 202. Snap ring outer wall; 21. Conical hole; 22. Conical head seat hole; 23. Protective platform; 24. Clamping platform; 25. Fixing groove; 26. Inclined surface; 3. Conical head seat; 301. Conical head seat side wall; 302. Conical head seat bottom wall; 31. Sleeve groove; 32. Conical head seat clamping groove; 33. Through hole; 4. Surge arrester insulating sleeve; 41. Suspension hole; 42. Conical head; 421. Conical head skirt; 5. Fixing component; 51. Half-thread screw; 511. Head; 512. Bearing surface; 513. Rod part; 514. Thread part; 515. Guide part; 52. Nut; 53. Upper anti-wear plate; 54. Lower anti-wear plate; 55. Washer; 6. Suspension component; 61. Hook; 62. Through pipe; 63. Weld point.

[0034] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure), and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific way. Therefore, they should not be construed as limitations on this utility model. If the specific posture changes, the directional indication will also change accordingly.

[0037] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, this utility model provides a spraying fixture for lightning arrester insulating bushings, characterized in that it includes...

[0038] Suspension device 1, which has a side wall; surge arrester insulating sleeve 4, one end of which is provided with a suspension hole 41, the surge arrester insulating sleeve 4 is sleeved on the side wall of the suspension device 1 so that the hole wall of the suspension hole 41 is fixedly connected to the suspension device 1, the end of the surge arrester insulating sleeve 4 away from the suspension device 1 is provided with a cone head 42, and the end of the cone head 42 near the suspension hole 41 is axially provided with a cone head skirt 421; retaining ring 2, which has a retaining ring inner wall 201 and a retaining ring outer wall 22, the bottom of the retaining ring inner wall 201 has a radially protruding retaining platform 24, the retaining platform 24 surrounds the cone head seat hole 22 in the circumferential direction, and the top of the retaining ring inner wall 201 has a radially protruding retaining platform 24. The protruding protective platform 23 forms a conical hole 21 around the perimeter; the conical seat 3 is a cylindrical structure with a conical seat side wall 301 and a conical seat bottom wall 302, which form a sleeve groove 31. The conical seat bottom wall 302 has a through hole 33, and the conical seat side wall 301 has a conical seat retaining groove 32 on its outer circumferential surface away from the sleeve groove 31; the conical head 42 is tightly connected to the sleeve groove 31 through a retaining ring 2, and the retaining platform 24 is tightly connected to the conical seat retaining groove 32 so that the inner wall 201 of the retaining ring abuts against the side wall 301 of the conical seat, and the conical skirt 421 abuts against the protective platform 23.

[0039] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the surge arrester insulating bushing spraying fixture is composed of a suspension device 1, a retaining ring 2, a cone head seat 3, and a surge arrester insulating bushing 4. The suspension device 1 is connected to the suspension hole 41 of the surge arrester insulating bushing 4, ensuring a tight connection between the suspension device 1 and the surge arrester insulating bushing 4. This prevents the semiconductor material from sticking to the suspension hole 41 during the spraying process. The cone head 42 of the surge arrester insulating bushing 4 is fixed by the cone head seat 3 and the retaining ring 2. The retaining platform 24 of the retaining ring 2 is tightly connected to the retaining groove 32 of the cone head seat, ensuring that the retaining platform 24 and the cone head are securely connected. The stability between the head seat 3; the protective platform 23 of the retaining ring 2 and the conical skirt 421 abut against each other, realizing the interlocking of the retaining ring 2 and the conical head 42, preventing accidental detachment between the conical head seat 3 and the conical head 42, and ensuring that the lower surface of the skirt will not spray semiconductor material, improving the insulation performance of the surge arrester insulating bushing 4, avoiding partial discharge phenomenon. The retaining ring 2, the conical skirt 421 and the conical head seat 3 form a mechanical interlock, ensuring the mechanical structural strength of the connection, reducing the risk, and making the operation simple, safer and more reliable.

[0040] Preferably, the suspension device 1, the retaining ring 2, and the cone head seat 3 are made of metal, preferably austenitic stainless steel, titanium alloy, or forged aluminum alloy.

[0041] In actual implementation, the connection between the suspension device 1 and the suspension hole 41 creates significant pressure between the side wall of the suspension device 1 and the surge arrester insulating bushing 4. Understandably, the suspension device 1 and the surge arrester insulating bushing 4 are tightly connected. The insulating bushing is made of rubber, and the fit between the rubber suspension hole 41 and the metal suspension device 1 ensures comprehensive protection of the suspension hole 41 during the spraying process. The cone head 42 is tightly connected to the bushing groove 31 via the retaining ring 2, and the retaining platform 24 is tightly connected to the cone head seat retaining groove 32 so that the inner wall 201 of the retaining ring abuts against the side wall 301 of the cone head seat, and the cone head skirt 421 abuts against the protective platform 23. This is understandable. The conical skirt 421 of the conical head 42 abuts against the retaining ring 2 and provides axial support for the retaining ring 2. At the same time, the retaining platform 24 of the retaining ring 2 and the retaining groove of the conical head seat 3 are tightly connected to provide axial support for the conical head seat 3. Meanwhile, the retaining inner wall 201 of the retaining ring 2 abuts against the side wall 301 of the conical head seat to ensure the circumferential clamping force of the retaining ring 2 on the conical head seat 3. It can be understood that the axial support of the conical skirt 421 and the protective platform 23, the axial support of the retaining platform 24 and the conical head seat 3, and the abutment of the inner wall 201 of the retaining ring and the side wall 301 of the conical head seat together achieve the mechanical interlocking of the conical head 42, the retaining ring 2 and the conical head seat 3, ensuring the mechanical structural strength of the connection.

[0042] In one embodiment, the suspension device 1 includes a plug 10, a fixing member 5, and a suspension member 6. The fixing member 5 is fixedly connected to the plug 10, and the suspension member 6 is sleeved on the fixing member 5.

[0043] In this embodiment, the suspension device 1 includes a plug 10, a fixing member 5, and a suspension member 6. The suspension member 6 is sleeved on the fixing member 5, and the fixing member 5 is fixedly connected to the plug 10. They cooperate with each other from top to bottom, so that the suspension device 1 as a whole can avoid the semiconductor material from sticking to the suspension hole 41 during the spraying process, thus ensuring the overall stability and safety.

[0044] In actual implementation, the suspension component 6 is sleeved outside the fixing component 5, and the suspension component 6 can rotate axially relative to the fixing component 5.

[0045] In one embodiment, the retaining ring 2 is a ring structure, and the retaining ring 2 includes two half-rings 20 with the same structure.

[0046] In this embodiment, the retaining ring 2 is composed of two identical half-rings 20. The half-rings 20 are obtained by dividing the retaining ring 2 radially, so that the retaining ring 2 can be quickly disassembled when it is engaged with the cone head seat 3, thus ensuring the fixed connection between the retaining ring 2 and the cone head seat 3.

[0047] In actual implementation, a fixing groove 25 and / or fixing eye can be added to the outside of the retaining ring 2. Fasteners such as cable ties or bolts can be used to tighten the fixing groove 25 and / or fixing eye, which can further improve the clamping force of the retaining ring 2 on the cone head seat 3.

[0048] In actual implementation, the cone head 42 is set in the bushing groove 31 and tightly connected to the cone head seat 3. One half ring 20 of the retaining ring 2 is engaged in the cone head seat 3, so that the retaining platform 24 is tightly connected to the retaining groove 32. At the same time, the protective platform 23 abuts against the cone head skirt 421 of the cone head 42, realizing the interlocking of the cone head skirt 421, the protective platform 23, the retaining platform 24 and the cone head seat 3. The other half ring 20 of the retaining ring 2 is engaged in the cone head seat 3 in the same way. The two half rings 20 together form the retaining ring 2, which forms a circumferential fixed connection to the cone head seat 3. It also ensures the stable protection of the surge arrester insulating bushing 4 in the axial direction by the retaining ring 2 and the cone head seat 3, and improves the insulation performance of the surge arrester insulating bushing 4.

[0049] In one embodiment, the protective platform 23 is provided with an inclined surface 26, the inclined surface 26 makes the diameter of the end of the cone hole 21 away from the mounting platform 24 larger than the diameter of the end of the cone hole 21 near the mounting platform 24, and the diameter of the end of the cone hole 21 near the mounting platform 24 smaller than the outer diameter of the cone 42.

[0050] In this embodiment, as Figure 3 and Figure 4 As shown, the inclined surface 26 on the protective platform 23 makes the cone hole 21 have different diameters at the top and bottom. The inclined surface 26 makes the diameter of the cone hole 21 at the end away from the mounting platform 24 larger. While ensuring the protection of the cone skirt 421 by the protective platform 23, it increases the area of ​​the surge arrester insulating bushing 4 when the semiconductor material is sprayed, and improves the insulation performance of the surge arrester insulating bushing 4.

[0051] In actual implementation, the height of the retaining ring 2 is determined according to the actual installation requirements of the cone-shaped skirt 421, and no specific restrictions are imposed here.

[0052] In one embodiment, the plug 10 is a columnar structure, the plug 10 has an axial plug sidewall 11 and a top surface 12 perpendicular to the axial direction, the plug sidewall 11 has a radially outwardly protruding plug platform 14, and the top surface 12 has a fixing hole 13, and the fixing member 5 is fixedly connected to the fixing hole 13.

[0053] In this embodiment, the plug 10 is fixedly connected to the fastener 5 through the fixing hole 13. The columnar plug 10 is connected to the suspension hole 41 of the surge arrester insulating sleeve 4, so that the plug 10 and the surge arrester insulating sleeve 4 are tightly connected, which avoids accidental detachment between the suspension device 1 and the surge arrester insulating sleeve 4 and improves the overall safety.

[0054] In actual implementation, the diameter of the plug 10 is larger than the diameter of the suspension hole 41 to achieve an interference fit between the plug 10 and the suspension hole 41.

[0055] In one embodiment, the fastener 5 includes a semi-threaded screw 51, a nut 52, an upper anti-wear plate 53, and a lower anti-wear plate 54. The semi-threaded screw 51 includes a head 511, a bearing surface 512, a shank 513, a thread 514, and a guide portion 515. The upper anti-wear plate 53 is sleeved on the shank 513 and abuts against the bearing surface 512. The lower anti-wear plate 54 is sleeved on the shank 513 and spaced apart from the upper anti-wear plate 53. The nut 52 is rotatably connected to the thread 514 and abuts against the lower anti-wear plate 54. The semi-threaded screw 51 is fixedly connected to the fixing hole 13 so that the nut 52 abuts against the plug 10.

[0056] In this embodiment, as Figure 1 and Figure 7 As shown, the semi-threaded screw 51, nut 52, upper anti-wear plate 53 and lower anti-wear plate 54 are coaxial components. The anti-wear plates reduce the wear between the semi-threaded screw 51 and other components, and improve the service life of the fastener 5. The nut 52 abuts against the top surface 12 of the plug 10, ensuring the stability of the fastener 5 and the plug 10.

[0057] In actual implementation, the materials of the upper anti-wear pad 53 and the lower anti-wear pad 54 are not specifically limited, but rubber is preferred.

[0058] In actual implementation, a shim 55 can be added between the lower anti-wear plate 54 and the nut 52 to control the tightness between the fixing part 5 and the suspension part 6.

[0059] In actual implementation, the upper anti-wear plate 53 and the lower anti-wear plate 54 are the same size, ensuring the overall uniformity and improving the stability between the fixing part 5 and the suspension part 6.

[0060] In actual implementation, the thickness of the upper anti-wear plate 53 and the lower anti-wear plate 54 is set according to actual needs and is not specifically limited.

[0061] In one embodiment, the suspension member 6 includes a hook 61 and a through pipe 62, the through pipe 62 being a hollow column, and the hook 61 being fixedly connected to the outer wall of the through pipe 62.

[0062] In this embodiment, as Figure 1 and Figure 8 As shown, the through tube 62 is a hollow cylinder and is fitted onto the rod 513 of the half-thread screw 51. It can be understood that the cooperation between the through tube 62 and the rod 513 allows the suspension 6 to be rotatably connected to the fixing member 5, which improves the operability in the spraying process and enables convenient and quick spraying of semiconductor materials.

[0063] In actual implementation, the tube 62 is a hollow column, and the hook 61 is fixedly connected to the outer wall of the tube 62. The tube 62 and the hook 61 can be integrally formed.

[0064] In actual implementation, the method of fixing the pipe 62 and the hook 61 is not specifically limited, but welding connection is preferred.

[0065] In one embodiment, the surge arrester insulating sleeve 4 is sleeved on the outer wall of the plug 10, and the plug platform 14 abuts against the suspension hole 41 so that the hole wall of the suspension hole 41 and the plug 10 are fixedly connected.

[0066] In this embodiment, the abutment between the plug 14 and the suspension hole 41 ensures that the plug 10 is tightly connected to the surge arrester insulating sleeve 4, thus avoiding the spraying of semiconductor materials onto the suspension hole 41 of the surge arrester insulating sleeve 4 and improving overall safety.

[0067] In actual implementation, the diameter of the blocking platform 14 is larger than the outer diameter of the suspension hole 41 of the surge arrester insulating bushing 4.

[0068] In one embodiment, the through tube 62 is sleeved outside the shank 513 of the semi-threaded screw 51 and positioned between the upper anti-wear plate 53 and the lower anti-wear plate 54.

[0069] In this embodiment, as Figure 1 , Figure 7 and Figure 8 As shown, the through pipe 62 is located between the upper anti-wear plate 53 and the lower anti-wear plate 54, which reduces the wear of the through pipe 62 on the fixing member 5 and improves the overall service life.

[0070] In one embodiment, the inner diameter of the through pipe 62 is larger than the diameter of the rod portion 513, and the outer diameter of the through pipe 62 is smaller than the diameter of the upper anti-wear plate 53.

[0071] In this embodiment, as Figure 1 , Figure 7 and Figure 8 As shown, the inner diameter of the through pipe 62 is larger than the diameter of the rod 513, which reduces the friction between the through pipe 62 and the rod 513 and improves the rotational ability of the suspension 6 and the fixing 5. The outer diameter of the through pipe 62 is smaller than the diameter of the upper anti-wear plate 53, which ensures the anti-wear effect of the anti-wear plate and improves the overall stability.

[0072] In actual implementation, the inner diameter of the through pipe 62 is 0.5mm-3mm larger than the diameter of the rod 513.

[0073] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A spraying fixture for surge arrester insulating bushings, used for spraying protective coating on surge arrester insulating bushings, characterized in that, include: Suspension device (1), the suspension device (1) having sidewalls; The surge arrester insulating sleeve (4) has a suspension hole (41) at one end. The surge arrester insulating sleeve (4) is sleeved on the side wall of the suspension device (1) so that the hole wall of the suspension hole (41) and the suspension device (1) are fixedly connected. The end of the surge arrester insulating sleeve (4) away from the suspension device (1) is provided with a cone head (42). The end of the cone head (42) near the suspension hole (41) is axially provided with a cone head skirt (421). A retaining ring (2) has an inner wall (201) and an outer wall (202). The bottom of the inner wall (201) has a radially protruding retaining platform (24), which encloses a conical head seat hole (22) in the circumferential direction. The top of the inner wall (201) has a radially protruding protective platform (23), which encloses a conical head hole (21) in the circumferential direction. The cone head seat (3) is a cylindrical structure. The cone head seat (3) has a cone head seat side wall (301) and a cone head seat bottom wall (302). The cone head seat side wall and the cone head seat bottom wall (302) form a sleeve groove (31). The cone head seat bottom wall (302) is provided with a through hole (33). The cone head seat side wall (301) is provided with a cone head seat slot (32) on its outer peripheral surface away from the sleeve groove (31). The cone (42) is tightly connected to the sleeve groove (31) via the retaining ring (2), the retaining platform (24) is tightly connected to the cone seat groove (32) so that the inner wall (201) of the retaining ring abuts against the side wall (301) of the cone seat, and the cone skirt (421) abuts against the protective platform (23).

2. The surge arrester insulating bushing spraying fixture as described in claim 1, characterized in that, The suspension device (1) includes a plug (10), a fixing member (5) and a suspension member (6). The fixing member (5) is fixedly connected to the plug (10), and the suspension member (6) is sleeved on the fixing member (5).

3. The surge arrester insulating bushing spraying fixture as described in claim 1, characterized in that, The retaining ring (2) is a ring structure, and the retaining ring (2) includes two half-rings (20) with the same structure.

4. The surge arrester insulating bushing spraying fixture as described in claim 1, characterized in that, The protective platform (23) is provided with an inclined surface (26), the inclined surface (26) makes the diameter of the end of the cone hole (21) away from the card platform (24) larger than the diameter of the end of the cone hole (21) close to the card platform (24), and the diameter of the end of the cone hole (21) close to the card platform (24) is smaller than the outer diameter of the cone (42).

5. The surge arrester insulating bushing spraying fixture as described in claim 2, characterized in that, The plug (10) is a columnar structure. The plug (10) has an axial plug sidewall (11) and a top surface (12) perpendicular to the axial direction. The plug sidewall (11) has a radially outwardly protruding plug platform (14). The top surface (12) has a fixing hole (13). The fixing member (5) is fixedly connected to the fixing hole (13).

6. The surge arrester insulating bushing spraying fixture as described in claim 5, characterized in that, The fastener (5) includes a half-thread screw (51), a nut (52), an upper anti-wear plate (53), and a lower anti-wear plate (54). The half-thread screw (51) includes a head (511), a bearing surface (512), a rod (513), a thread (514), and a guide part (515). The upper anti-wear plate (53) is sleeved on the rod (513) and abuts against the bearing surface (512). The lower anti-wear plate (54) is sleeved on the rod (513) and spaced apart from the upper anti-wear plate (53). The nut (52) is rotatably connected to the thread (514) and abuts against the lower anti-wear plate (54). The half-thread screw (51) is fixedly connected to the fixing hole (13) so that the nut (52) abuts against the plug (10).

7. The surge arrester insulating bushing spraying fixture as described in claim 6, characterized in that, The suspension component (6) includes a hook (61) and a through pipe (62). The through pipe (62) is a hollow column, and the hook (61) is fixedly connected to the outer wall of the through pipe (62).

8. The surge arrester insulating bushing spraying fixture as described in claim 5, characterized in that, The surge arrester insulating sleeve (4) is fitted onto the outer wall of the plug (10), and the plug platform (14) abuts against the suspension hole (41) so that the wall of the suspension hole (41) and the plug (10) are fixedly connected.

9. The surge arrester insulating bushing spraying fixture as described in claim 7, characterized in that, The through tube (62) is sleeved outside the rod portion (513) of the half-thread screw (51) and located between the upper anti-wear plate (53) and the lower anti-wear plate (54).

10. The surge arrester insulating bushing spraying fixture as described in claim 7, characterized in that, The inner diameter of the through pipe (62) is larger than the diameter of the rod (513), and the outer diameter of the through pipe (62) is smaller than the diameter of the upper anti-wear plate (53).

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