Direct-current disc-shaped suspension type glass insulator
By using a glass disc with raised edges in the DC disc-shaped suspended glass insulator to combine with the clamping female head, and installing rubber protective inner snap ring and multi-functional tightening pins, the problem of damage to the existing insulators under thermal expansion and external force is solved, and higher mechanical strength and service life are achieved.
Patent Information
- Application Number
- CN202510028408.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-03-18
AI Technical Summary
Existing glass disc insulators are prone to cracks, damage or debris under thermal expansion and external force, resulting in decreased mechanical strength and insulation failure.
A DC disc-shaped suspended glass insulator is designed, using a glass disc with a raised edge and a clamped female head to protect the inner clamping ring and multi-functional tightening pin by inlaid rubber to avoid direct contact between metal and glass, and reduce the squeeze pressure through spring retaining ring and top washer.
It effectively avoids damage to glass discs caused by material expansion and extrusion, improves the mechanical strength and service life of the insulator, and ensures the stability and safety of the insulator.
Smart Images
Figure CN119650211A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of insulators, and in particular to a direct current disc-shaped suspension glass insulator. Background Art
[0002] With the rapid development and maturity of ultra-high voltage and UHV DC transmission technology, the construction pace of DC transmission lines will inevitably become faster and faster; the demand for DC line insulators will inevitably become more and more urgent. The purpose of insulator strings is to prevent leakage of high-voltage lines. They are suspended between the wires and the crossbars, in a series, forming an umbrella-like structure from top to bottom, in order to prevent rainwater from penetrating into the wires.
[0003] After searching, it is found that after a period of use, the glass disc insulators in the prior art are prone to cracks, breakage or fragments on their surfaces, indicating that their mechanical strength has been affected; and these cracks may be caused by long-term stress, thermal cycles or external force impact; since the traditional insulator glass disc is directly sleeved on the metal core rod, it is very easy to cause the insulator glass disc to crack under the condition of thermal expansion, and under the action of wind force, it will cause the cable to shake, and it is also easy to cause the core rod and the glass disc to be squeezed, which is also easy to cause the glass disc to be damaged. Therefore, we propose a new DC disc-shaped suspension glass insulator that can avoid such phenomena. Summary of the invention
[0004] In view of the technical problem that the metal core rod inside the insulator in the prior art is very likely to crack the insulator glass plate under the condition of thermal expansion, resulting in insulator failure, the present invention adopts the following technical solution: A DC disk-shaped suspended glass insulator comprises a suspension rod and a glass disk which is an inverted bowl-shaped structure as a whole. A ridged protrusion is reserved at the top of the glass disk. A clamping female head is sleeved on the circumferential outer wall of the ridged protrusion, and the clamping female head is in a cylindrical structure as a whole. A cylindrical recessed groove is opened at the bottom of the clamping female head, and a protective inner clamping ring is clamped on the circumferential inner wall of the cylindrical recessed groove, and the protective inner clamping ring is made of rubber material; a vertical hole is reserved in the middle of the top of the glass disk, which runs through the upper and lower sides, and a middle through hole with the same axis and the same diameter as the vertical hole is opened at the bottom of the cylindrical recessed groove; two vertical sections 1 and 2 which are symmetrical to each other are opened near the top of the circumferential outer wall of the clamping female head; and a cylindrical recessed groove 2 is opened in the middle of the vertical surface of the vertical section 2, and a groove bottom of the cylindrical recessed groove 2 is opened with a groove symmetrical to the middle. The intervening hole passes through and connects to the latch lock hole on the surface of the vertical section; a strip-shaped latch hole is opened on the circumferential outer wall of the suspension rod near the top; an anti-slip cylindrical head is fixed to the bottom end of the suspension rod; a horizontal hole is opened on the vertical surface of the vertical section near the top of the latch lock hole, and a snap-in notch that passes through the horizontal hole is provided above the horizontal hole, and the horizontal hole and the snap-in notch can just allow the suspension rod and the anti-slip cylindrical head at its bottom end to be vertically translated and advanced to form a snap connection; the same multifunctional tightening pin is inserted in the horizontal hole and the latch lock hole; by providing a protective inner snap ring embedded in the inner wall of the cylindrical sink groove, the metal snap-in female head can be prevented from directly contacting the glass disc of the glass material, thereby preventing the glass disc from being squeezed and cracked due to thermal expansion or contraction of different materials, resulting in the overall failure of the insulator.
[0005] A further configuration of the present invention is that an annular groove is formed on the circumferential inner wall of the cylindrical sink groove, and an annular rib matching the annular groove is reserved on the circumferential outer wall of the protective inner retaining ring; this can ensure that the protective inner retaining ring and the retaining female head are relatively stationary during the clamping, prevent slippage and collapse during the extrusion clamping, and ensure that the protective inner retaining ring and the ridged protrusion are tightly engaged.
[0006] A further configuration of the present invention is that a top gasket is clamped at the top of the vertical hole one, and the top gasket is sleeved on the outer wall of the hanger, and the longitudinal section of the top gasket is two symmetrical L-shapes, and the main body diameter of the hanger is smaller than the inner diameter of the middle through hole and the vertical hole one. By setting the top gasket, not only the bottom of the columnar sink trough one and the top of the ridged protrusion can be isolated, but also the outer wall of the hanger and the inner wall of the vertical hole one can be prevented from being squeezed.
[0007] A further configuration of the present invention is that a spring retaining ring is reserved on the circumferential outer wall of the hanger rod near the lower side of the vertical hole 1, and a compression spring sleeved on the outer wall of the hanger rod is fixed on the upper surface of the spring retaining ring, and a rubber retaining ring is fixed on the top of the compression spring; the rubber retaining ring and the top gasket have the same shape and are symmetrically distributed; this can prevent the hanger rod and the glass disc from being squeezed due to the overall shaking of the insulator.
[0008] A further configuration of the present invention is that a thickened column head with a diameter larger than that of the middle section of the hanger is reserved at the top of the hanger rod, and the circumferential outer wall of the thickened column head is provided with two shoulder planes which are centrally symmetrically distributed with each other, and the strip-shaped pin hole is provided in the middle of the section plane; the outer diameter of the thickened column head is smaller than the inner diameter of the middle through hole, which ensures that the hanger rod can pass through the vertical hole 1 and the middle through hole from bottom to top, while also increasing the strength of the strip-shaped pin hole and the overall tensile resistance effect.
[0009] A further configuration of the present invention is that an annular rib is reserved on the lower surface of the glass disc near the circumferential edge, the longitudinal section of the annular rib is a circular ring structure, and the plane where the bottom opening of the annular rib is located is lower than the height of the plane where the outer edge of the glass disc is located; it can play the role of a waterproof curtain, that is, prevent rainwater from forming an uninterrupted line when it rains; the circumferential outer edge of the glass disc is arranged in an upward-curved structure, when it rains heavily, due to the inertia formed by the rainwater flowing downward, the rainwater flowing downward can be thrown out in a parabolic form, thereby improving the insulation effect.
[0010] A further configuration of the present invention is that a horizontal drying perforation is opened near the top of the circumferential outer wall of the clamping female head, and the middle of the drying perforation is penetrated by the horizontal hollowing hole, and the hole openings at both ends of the drying perforation are provided with collapsed slope feet.
[0011] A further configuration of the present invention is that the multifunctional clamping pin includes a straight-through screw and a convex abutment block clamped in the transverse hole, and the straight-through screw passes through the latch lock holes at both ends and is screwed with counter nuts; the vertical section two is located at the notch of the cylindrical sink groove two and is fixed with an internal threaded ring coaxial with the cylindrical sink groove two, and a rainproof plastic cover is screwed inside the internal threaded ring; by providing the counter nuts and rainproof plastic cover, the multifunctional clamping pin can be tightly fixed in the strip latch hole.
[0012] A further configuration of the present invention is that a groove is opened at one end of the straight-through screw rod close to the top nut, and the cutting direction of the groove is perpendicular to the axial center line. The end of the straight-through screw rod can be bent after the top nut is screwed on, wherein the end of the straight-through screw rod can be bent upward or downward along the opening direction of the groove, thereby playing a role in preventing the top nut from falling off and reinforcing it.
[0013] A further configuration of the present invention is that the convex abutment block is slidably inserted in the transverse hole and the card-in notch, and an arc-shaped abutment groove matched with the outer diameter of the hanger and the anti-slip cylindrical head is reserved at one end of the convex abutment block close to the hanger rod; it can not only prevent the anti-slip cylindrical head at the bottom end of the hanger rod from slipping, but also play a role in pressing down and fixing the anti-slip cylindrical head.
[0014] The beneficial effects of the present invention are: 1. By providing a protective inner clamping ring embedded in the inner wall of the cylindrical sink, it is possible to avoid direct contact between the metal clamping female head and the glass disc of the glass material, thereby preventing the glass disc from being squeezed and cracked due to thermal expansion or contraction of different materials, thereby preventing the overall failure of the insulator.
[0015] 2. It can ensure that the protective inner snap ring and the female snap head are relatively still during the snap connection, prevent slippage and collapse during the squeeze connection, and ensure that the protective inner snap ring and the ridged protrusion are tightly engaged.
[0016] 3. The top gasket can not only isolate the bottom of the columnar trough from the top of the ridged protrusion, but also prevent the outer wall of the hanger from being squeezed with the inner wall of the vertical hole.
[0017] 4. By setting a groove at the end of the straight-through screw, the end of the straight-through screw can be bent after the top nut is screwed on, thereby preventing the top nut from falling off and reinforcing it. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the overall structure of a DC disc-shaped suspension glass insulator proposed by the present invention after the hanger is installed; Figure 2 This is a schematic diagram of the upward-looking three-dimensional structure of a DC disc-shaped suspension glass insulator proposed by the present invention; Figure 3 A top view of a DC disc-shaped suspension glass insulator proposed by the present invention; Figure 4 A DC disc-shaped suspension glass insulator proposed by the present invention Figure 3 Schematic diagram of the cross-sectional structure along line AA; Figure 5 A side view of a DC disc-shaped suspension glass insulator proposed by the present invention; Figure 6 A DC disc-shaped suspension glass insulator proposed by the present invention Figure 5 The schematic diagram of the cross-sectional structure along the BB line; Figure 7 A schematic diagram of the assembly structure of a suspension rod in a DC disc-shaped suspension glass insulator proposed by the present invention; Figure 8 This is a schematic diagram of the assembly structure of a clamping female head in a DC disc-shaped suspension glass insulator proposed by the present invention; Fig. 9 The present invention provides a partial cross-sectional view of a clamping female connector in a DC disc-shaped suspension glass insulator.
[0019] In the figure: 1. glass disc; 101. annular rib; 102. ridged protrusion; 2. suspension rod; 3. anti-slip cylindrical head; 4. snap-fit female head; 401. cylindrical groove II; 402. internal thread ring; 403. latch lock hole; 404. middle perforation; 405. cylindrical groove I; 5. vertical section I; 6. drying perforation; 7. spring retaining ring; 8. thickened column head; 9. strip latch hole; 10. snap-in notch; 11. transverse hole; 12. multifunctional tightening pin; 1201. convex block; 1202. groove; 13. vertical section II; 14. rainproof plastic cover; 15. compression spring; 16. rubber retaining ring; 17. protective inner retaining ring; 18. top washer; 19. top nut. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0021] In this embodiment, refer to Figure 1-9A DC disk-shaped suspended glass insulator comprises a suspension rod 2 and a glass disk 1 which is an inverted bowl-shaped structure as a whole. A ridged protrusion 102 is reserved at the top of the glass disk 1. A clamping female head 4 is sleeved on the circumferential outer wall of the ridged protrusion 102. The clamping female head 4 is a cylindrical structure as a whole. A cylindrical sinking groove 405 is opened at the bottom of the clamping female head 4. The center line of the cylindrical sinking groove 405 coincides with the axis line of the entire clamping female head 4. A protective inner clamping groove is clamped on the circumferential inner wall of the cylindrical sinking groove 405. The inner diameter of the protective inner snap ring 17 is matched with the outer diameter size and shape of the ridged protrusion 102, and the protective inner snap ring 17 is made of rubber material; a vertical hole 1 penetrating the upper and lower sides is reserved in the middle of the top of the glass disc 1, and a middle through hole 404 with the same axis and the same diameter as the vertical hole is opened at the bottom of the cylindrical sink groove 1 405; the outer wall of the circumference of the clamping female head 4 is opened near the top with two vertical sections 15 and 13 that are centrally symmetrical to each other; and the middle of the vertical surface of the vertical section 13 is opened There is a cylindrical sinking groove 401, and the bottom of the cylindrical sinking groove 401 is provided with a latch hole 403 which penetrates the middle through hole 404 and communicates with the surface of the vertical section 15; a strip latch hole 9 is provided on the circumferential outer wall of the suspension rod 2 near the top; an anti-slip cylindrical head 3 is fixed to the bottom end of the suspension rod 2; a horizontal hole 11 is provided above the vertical surface of the vertical section 15 near the latch hole 403, and a snap-in notch 10 which penetrates the horizontal hole 11 is provided above the horizontal hole 11, and the horizontal hole 11 and the snap-in notch 10 is just enough to allow the suspension rod 2 and the anti-slip cylindrical head 3 at its bottom to move vertically and form a snap connection; the same multifunctional locking pin 12 is inserted into the horizontal hole 11 and the latch lock hole 403; by providing a protective inner clamping ring 17 embedded in the inner wall of the cylindrical sink groove 405, it is possible to avoid the metal clamping female head 4 from directly contacting the glass disc 1 of the glass material, thereby preventing the glass disc 1 from being squeezed and cracked due to thermal expansion or contraction of different materials, resulting in the overall failure of the insulator.
[0022] In the present invention, an annular groove is formed on the circumferential inner wall of the cylindrical sink groove 405, and an annular rib matching the annular groove is reserved on the circumferential outer wall of the protective inner snap ring 17; this ensures that the protective inner snap ring 17 and the snap female head 4 are relatively stationary during snap connection, preventing slippage and collapse during squeeze snap connection, and ensuring that the protective inner snap ring 17 is tightly engaged with the ridged protrusion 102.
[0023] Reference Figure 4 A top gasket 18 is clamped at the top of the vertical hole 1, and the top gasket 18 is sleeved on the outer wall of the suspension rod 2. The longitudinal section of the top gasket 18 is two symmetrical L-shapes. The main body diameter of the suspension rod 2 is smaller than the inner diameter of the middle through hole 404 and the vertical hole 1. The top gasket 18 is set, not only the bottom of the columnar sink 405 and the top of the ridged protrusion 102 can be isolated, but also the outer wall of the suspension rod 2 and the inner wall of the vertical hole 1 can be prevented from being squeezed.
[0024] Reference Figure 2 and Figure 4 A spring retaining ring 7 is reserved on the circumferential outer wall of the suspension rod 2 near the lower part of the vertical hole 1, and a compression spring 15 sleeved on the outer wall of the suspension rod 2 is fixed on the upper surface of the spring retaining ring 7, and a rubber retaining ring 16 is fixed on the top of the compression spring 15; the rubber retaining ring 16 and the top gasket 18 have the same shape and are symmetrically distributed; this can prevent the suspension rod 2 and the glass disc 1 from being squeezed due to the shaking of the insulator as a whole.
[0025] Reference Figure 2 and Figure 5 The top of the hanger 2 is reserved with a thickened column head 8 whose diameter is larger than the diameter of the middle section of the hanger 2, and the circumferential outer wall of the thickened column head 8 is provided with two shoulder planes which are centrally symmetrically distributed with each other, and the strip-shaped pin hole 9 is provided in the middle of the section plane; the outer diameter of the thickened column head 8 is smaller than the inner diameter of the middle through hole 404, which ensures that the hanger 2 can pass through the vertical hole 1 and the middle through hole 404 from bottom to top, while also increasing the strength of the strip-shaped pin hole 9 and the overall tensile resistance effect.
[0026] Reference Figure 4 An annular rib 101 is reserved near the circumferential edge of the lower surface of the glass disc 1. The longitudinal section of the annular rib 101 is an annular structure, and the plane where the bottom opening of the annular rib 101 is located is lower than the height of the plane where the outer edge of the glass disc 1 is located; it can play a waterproof curtain effect, that is, prevent rainwater from forming an uninterrupted line when it rains; the circumferential outer edge of the glass disc 1 is set to have an upward-warped structure, and when it rains heavily, due to the inertia of the rainwater flowing down, the rainwater flowing down can be thrown out in a parabolic form to improve the insulation effect.
[0027] Reference Figure 4 A horizontal drying perforation 6 is opened near the top of the circumferential outer wall of the clamping female head 4, and the middle of the drying perforation 6 is penetrated by the horizontal hollowing hole 11, and the hole openings at both ends of the drying perforation 6 are provided with collapsed slope feet, which can prevent rust caused by long-term water accumulation in the horizontal hollowing hole 11.
[0028] Reference Figure 6-Figure 8 The multifunctional clamping pin 12 includes a straight-through screw and a convex abutment block 1201 clamped in the transverse hole 11, and the straight-through screw passes through the latch lock holes 403 at both ends and is screwed with a counter nut 19; the vertical section 13 is located at the notch of the cylindrical sink groove 401 and is fixed with an internal threaded ring 402 coaxial with the cylindrical sink groove 401, and the internal threaded ring 402 is screwed with a rainproof plastic cover 14; by setting the counter nut 19 and the rainproof plastic cover 14, the multifunctional clamping pin 12 can be tightly fixed in the strip latch hole 9.
[0029] Reference Figure 6-Figure 7A groove 1202 is formed at one end of the straight screw rod near the top nut 19, and the cutting direction of the groove 1202 is perpendicular to the axis line; the end of the straight screw rod can be bent after the top nut 19 is screwed on, wherein the end of the straight screw rod can be bent upward or downward along the opening direction of the groove 1202 to prevent the top nut 19 from falling off and reinforce it.
[0030] Reference Figure 6-Figure 8 The convex abutment block 1201 is slidably inserted into the transverse hole 11 and the card-in notch 10, and an arc-shaped abutment groove matched with the outer diameter of the hanger 2 and the anti-slip cylindrical head 3 is reserved at the end of the convex abutment block 1201 close to the hanger 2; it can not only prevent the anti-slip cylindrical head 3 at the bottom end of the hanger 2 from slipping, but also play a role in pressing down and fixing the anti-slip cylindrical head 3.
[0031] Working principle: when assembling the device, the first step is to assemble the clamping female head 4 and the glass disc 1. First, the protective inner clamping ring 17 is embedded in the cylindrical sink groove 405 below the clamping female head 4, and then the top gasket 18 is clamped in the vertical hole 1 at the top of the ridged protrusion 102; then the glass disc 1 with the top gasket 18 is clamped with the clamping female head 4, and then one end of the thickened column head 8 of the suspension rod 2 is inserted upward from the bottom end of the glass disc 1 until the strip-shaped pin hole 9 is aligned with the pin lock hole 403; finally, the straight rod of the multifunctional tightening pin 12 is inserted from the pin lock hole 403 on the surface of the vertical section 5, and finally it is locked with the top nut 19 from the other side, and finally the rainproof plastic cover 14 is screwed on.
[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A DC disk-shaped suspended glass insulator, comprising a suspension rod (2) and a glass disk (1) having an overall inverted bowl-shaped structure, wherein a ridged protrusion (102) is reserved at the top of the glass disk (1), characterized in that: The circumferential outer wall of the ridged protrusion (102) is sleeved with a clamping female head (4), and the clamping female head (4) is an overall cylindrical structure. The bottom end of the clamping female head (4) is provided with a cylindrical recessed groove (405), and the circumferential inner wall of the cylindrical recessed groove (405) is clamped with a protective inner clamping ring (17), the inner diameter of the protective inner clamping ring (17) is compatible with the outer diameter size and shape of the ridged protrusion (102), and the protective inner clamping ring (17) is made of rubber material; a vertical hole (1) is reserved in the middle of the top of the glass disc (1) and passes through the upper and lower sides, and a middle through hole (404) with the same axis and diameter as the vertical hole is opened at the bottom of the cylindrical recessed groove (405); the circumferential outer wall of the clamping female head (4) is provided with two vertical sections (5) and (13) that are centrally symmetrical to each other near the top; and the vertical section (13) of the vertical section (13) is A cylindrical groove (401) is provided in the middle, and a latch hole (403) is provided at the bottom of the cylindrical groove (401) and is connected to the middle through hole (404) and the surface of the vertical section (5); a strip latch hole (9) is provided on the circumferential outer wall of the suspension rod (2) near the top; an anti-slip cylindrical head (3) is fixed to the bottom end of the suspension rod (2); a transverse hole (11) is provided on the vertical surface of the vertical section (5) near the top of the latch hole (403), and a snap-in notch (10) is provided above the transverse hole (11) and passes through the transverse hole (11), and the transverse hole (11) and the snap-in notch (10) can just allow the suspension rod (2) and the anti-slip cylindrical head (3) at the bottom thereof to be vertically translated and pushed forward and form a snap connection; the same multifunctional locking pin (12) is inserted into the transverse hole (11) and the latch hole (403).
2. A DC disc-shaped suspension glass insulator according to claim 1, characterized in that: The circumferential inner wall of the cylindrical sink groove (405) is provided with an annular groove, and the circumferential outer wall of the protective inner snap ring (17) is provided with an annular rib matched with the annular groove.
3. A DC disc-shaped suspension glass insulator according to claim 1, characterized in that: A top gasket (18) is clamped at the top end of the vertical hole one, and the top gasket (18) is sleeved on the outer wall of the suspension rod (2). The longitudinal section of the top gasket (18) is in the form of two mutually symmetrical L-shapes, and the main body diameter of the suspension rod (2) is smaller than the inner diameter of the middle through hole (404) and the vertical hole one.
4. A DC disc-shaped suspension glass insulator according to claim 3, characterized in that: A spring retaining ring (7) is reserved on the circumferential outer wall of the suspension rod (2) near the lower side of the vertical hole 1, and a compression spring (15) sleeved on the outer wall of the suspension rod (2) is fixed on the upper surface of the spring retaining ring (7), and a rubber retaining ring (16) is fixed on the top of the compression spring (15); the rubber retaining ring (16) and the top gasket (18) have the same shape and are symmetrically distributed.
5. A DC disc-shaped suspension glass insulator according to claim 1, characterized in that: The top of the suspension rod (2) is reserved with a thickened column head (8) having a diameter larger than the diameter of the middle section of the suspension rod (2), and the circumferential outer wall of the thickened column head (8) is provided with two shoulder cut planes which are centrally symmetrically distributed with each other, and the strip-shaped pin hole (9) is provided in the middle of the cut plane; the outer diameter of the thickened column head (8) is smaller than the inner diameter of the middle through hole (404).
6. A DC disc-shaped suspension glass insulator according to claim 1, characterized in that: An annular rib (101) is reserved on the lower surface of the glass disc (1) near the circumferential edge; the longitudinal section of the annular rib (101) is in the form of an annular structure, and the plane where the bottom opening of the annular rib (101) is located is lower than the height of the plane where the outer edge of the glass disc (1) is located; the circumferential outer edge of the glass disc (1) is arranged in an upward-warped structure.
7. A DC disc-shaped suspension glass insulator according to claim 1, characterized in that: A horizontal drying through hole (6) is formed on the circumferential outer wall of the clamping female head (4) near the top, and the middle of the drying through hole (6) is penetrated by the horizontal hollow hole (11), and the openings at both ends of the drying through hole (6) are provided with collapsed slope feet.
8. A DC disc-shaped suspension glass insulator according to claim 1, characterized in that: The multifunctional abutting pin (12) comprises a straight-through screw and a convex abutting block (1201) clamped in the transverse hole (11), and the straight-through screw passes through the latch holes (403) at both ends and is screwed with a top nut (19); the second vertical section (13) is located at the notch of the second cylindrical sink groove (401) and is fixed with an internal threaded ring (402) coaxial with the second cylindrical sink groove (401), and a rainproof plastic cover (14) is screwed inside the internal threaded ring (402).
9. A DC disc-shaped suspension glass insulator according to claim 8, characterized in that: A groove (1202) is formed at one end of the straight-through screw rod close to the top nut (19), and the cutting direction of the groove (1202) is perpendicular to the axis.
10. A DC disc-shaped suspension glass insulator according to claim 9, characterized in that: The convex stopper (1201) is slidably inserted into the transverse hole (11) and the snap-in notch (10), and an arc-shaped stopper groove matching the outer diameter of the suspension rod (2) and the anti-slip cylindrical head (3) is reserved at one end of the convex stopper (1201) close to the suspension rod (2).