A post insulator and a method of manufacturing the same

Abstract

The present application relates to the technical field of insulators, and discloses a post insulator and a preparation method thereof, which comprises a post insulator body, a first clamping sleeve and a second clamping sleeve, and the first clamping sleeve and the second clamping sleeve are staggered and distributed, and the staggered and distributed first clamping sleeve and the second clamping sleeve increase the assembly space and facilitate the cable installation steel frame. The first clamping sleeve and the second clamping sleeve are designed as a staggered distribution structure, which breaks the coplanar limitation of traditional components, greatly widens the cable assembly space, and the operator does not need to deliberately accurately align the cable with the gap between the two clamping sleeves, but only needs to place the cable at the edge of the clamping groove of the first clamping sleeve with the help of the sufficient space reserved by the staggered structure, and then only needs to rotate the rotating disc to complete the locking, thereby completely simplifying the assembly process, reducing the operation difficulty, and significantly improving the assembly efficiency and reducing the operation errors, especially in the high-altitude or complex steel frame scene.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of insulators, in particular to a post insulator and a preparation method thereof. BACKGROUND

[0002] As a key basic component in the power system, the post insulator is widely used in high-voltage transmission lines, substations and other scenes. Its core function is to stably support the high-voltage cable and realize the insulation isolation of the cable and the external metal structure, which is directly related to the safety and stability of power transmission. With the development of the power system towards intelligence and high density, higher requirements are put forward for the structural adaptability, assembly convenience, locking reliability and maintenance flexibility of the post insulator. However, the existing post insulator still has many technical problems in actual application, which is difficult to meet the current use requirements.

[0003] CN115312277A discloses a post insulator, which solves the problem that the cable supported and fixed by the post insulator will sway under the action of wind, and the fixing part of the post insulator will be worn, and even the cable or the post insulator will be damaged.

[0004] However, in actual operation, it is found that the cable positioning block and the pressing block are located in the same vertical plane, which leads to the need for the operator to align the cable with the gap between the two during assembly, so that positioning can be performed by the locking bolt, which is complex to operate.

[0005] Therefore, the present application is proposed. SUMMARY

[0006] To solve the above technical problems, the basic idea of the technical scheme adopted by the present application is:

[0007] A post insulator, comprising a post insulator body and first and second clamping sleeves.

[0008] A support is installed on the post insulator body, a vertical plate is installed on the support, a plug-in plate is installed through the vertical plate, a first clamping sleeve for positioning a cable is installed at one end of the plug-in plate, a rotating disc is slidingly connected to the other end of the plug-in plate and the side wall of the vertical plate, a guide block is installed on the rotating disc, an inclined slope is formed at one end of the guide block, the inclined slope is used to drive the plug-in plate to move the first clamping sleeve to the side of the second clamping sleeve, the first and second clamping sleeves are staggered, and the staggered first and second clamping sleeves increase the assembly space and facilitate the installation of the cable mounting steel frame.

[0009] A sliding rod is installed on the back of the rotating disc, the sliding rod is slidingly connected to the second clamping sleeve vertically slidingly arranged on the vertical plate, and the rotating disc rotates to drive the second clamping sleeve to slide downward, and finally cooperates with the first clamping sleeve to position and lock the cable.

[0010] As a preferred embodiment of the present application, the base is provided on the bottom of the post insulator body, the base is in the shape of a straight line, a pair of positioning holes are formed on the base, the positioning holes are in the shape of a straight line, and the positioning holes are used to facilitate the connection between the post insulator body and the external structure.

[0011] As a preferred embodiment of the present application, the first sleeve is provided with a notch at the bottom, a plug rod is horizontally installed inside the notch, the plug rod is movably penetrated through the vertical plate, a positioning plate is installed at the end of the plug rod, the diameter of the positioning plate is larger than that of the plug rod, a compression spring is sleeved on the outer sidewall of the plug rod, one end of the compression spring is clamped on the sidewall of the vertical plate, and the other end of the compression spring is clamped on the inner sidewall of the notch.

[0012] As a preferred embodiment of the present application, the vertical plate is provided with a fixing block on the sidewall, the plug plate is movably penetrated through the fixing block, a connecting plate is installed at the end of the plug plate, a ball is installed at the end of the connecting plate, and the ball is slidably arranged on the surface of the rotating disc.

[0013] As a preferred embodiment of the present application, the end surface of the vertical plate is provided with an inner groove, a rotating disc is rotatably installed inside the inner groove, a knob is installed at the rotating center of the rotating disc, the surface of the knob is knurled, a through hole is installed on the rotating disc, an installation groove is formed on the inner groove, the distance from the through hole to the rotating center of the rotating disc is the same as that from the installation groove to the rotating center of the rotating disc, and when the through hole corresponds to the installation groove, the angle of the rotating disc is locked by a bolt.

[0014] As a preferred embodiment of the present application, the first sleeve is provided with a clamping groove, and the second sleeve is provided with a clamping block at the bottom, the clamping block and the clamping groove correspond to each other.

[0015] As a preferred embodiment of the present application, the sidewall of the second sleeve is provided with a sliding plate, a strip-shaped groove is formed on the inner sidewall of the sliding plate, a sliding rod is slidably arranged on the strip-shaped groove, a through groove is formed on the vertical plate, the sliding rod is slidably arranged in the through groove, and the through groove is an arc-shaped groove.

[0016] As a preferred embodiment of the present application, a limiting rod is vertically penetrated and installed on the sidewall of the sliding plate, limiting seats are installed at both ends of the limiting rod, and the sidewall of the limiting seat is welded on the sidewall of the vertical plate.

[0017] The preparation method of the post insulator comprises the following steps:

[0018] Step one: preparing raw materials, selecting insulating materials to prepare the post insulator body and metal materials to prepare the remaining parts;

[0019] Step two: component processing, the insulating material is shaped to obtain the support insulator body, the metal parts are cut and punched, and the rotating disc is processed to have a slope and a through hole, and the second sleeve is processed to have a clamping block;

[0020] Step three: component pre-assembly, the insertion rod and the compression spring are assembled in the first sleeve, the sliding rod is assembled in the rotating disc, and the limiting rod is assembled with the limiting seat;

[0021] Step four: overall assembly, the support insulator body is connected with the base, the support and the vertical plate are sequentially installed, the insertion plate is inserted into the vertical plate and connected with the first sleeve, the rotating disc is assembled in the inner groove, and the second sleeve is assembled in cooperation with the sliding plate, the strip-shaped groove and the sliding rod;

[0022] Step five: detection and acceptance, the cooperation degree of each component is checked, the locking effect of the first sleeve and the second sleeve is tested, the insulation performance of the support insulator body is verified, and the preparation is completed after passing the test.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] The first sleeve and the second sleeve are designed as an interleaved distribution structure, which breaks the coplanar restriction of traditional components, greatly widens the cable assembly space, and the operator does not need to deliberately accurately align the cable with the gap between the two sleeves, but only needs to place the cable at the edge of the clamping groove of the first sleeve with the help of the sufficient space reserved by the interleaved structure, and then only needs to rotate the rotating disc to complete the locking, thereby completely simplifying the assembly process, reducing the operation difficulty, and significantly improving the assembly efficiency and reducing the operation errors, especially in the high-altitude or complex steel frame scene.

[0025] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] In the drawings:

[0027] Figure 1 It is a three-dimensional view of a support insulator;

[0028] Figure 2 It is a three-dimensional view of a support insulator; Figure 1 side view;

[0029] Figure 3 It is a three-dimensional view of a support insulator; Figure 1 ;

[0030] Figure 4 It is a three-dimensional view of a support insulator; Figure 3 side view;

[0031] Figure 5 It is a sliding rod and sliding plate assembly view of a support insulator;

[0032] Figure 6 This is an assembly diagram of a rotary table and inner groove for a post insulator;

[0033] Figure 7 This is an overall diagram of the second ferrule of a post insulator.

[0034] In the diagram: 1. Post insulator body; 2. Base; 3. Positioning hole; 4. Bracket; 5. Vertical plate; 6. First clamping sleeve; 7. Notch; 8. Insert rod; 9. Positioning plate; 10. Compression spring; 11. Inserting plate; 12. Connecting plate; 13. Ball bearing; 14. Turntable; 15. Knob; 16. Guide block; 17. Ramp; 18. Through hole; 19. Mounting groove; 20. Inner groove; 21. Sliding rod; 22. Through groove; 23. Second clamping sleeve; 24. Slide plate; 25. Strip groove; 26. Limiting rod; 27. Limiting seat; 28. Clamping block; 29. ​​Clamping slot; 30. Fixing block. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0036] Example 1:

[0037] like Figures 1 to 7 As shown, a post insulator includes a post insulator body 1, a first ferrule 6, and a second ferrule 23.

[0038] A bracket 4 is installed on the main body 1 of the post insulator, a vertical plate 5 is installed on the bracket 4, and an insert plate 11 is installed through the vertical plate 5. A first clamping sleeve 6 for positioning the cable is installed at one end of the insert plate 11, and the other end of the insert plate 11 is slidably connected to a turntable 14 rotatably installed on the side wall of the vertical plate 5. A guide block 16 is installed on the turntable 14, and a ramp 17 is opened at one end of the guide block 16. The ramp 17 is used to drive the insert plate 11 to move the first clamping sleeve 6 to the side of the second clamping sleeve 23. The first clamping sleeve 6 and the second clamping sleeve 23 are staggered, and the staggered distribution of the first clamping sleeve 6 and the second clamping sleeve 23 increases the assembly space and facilitates the installation of the cable frame.

[0039] A slide rod 21 is mounted on the back of the turntable 14. The slide rod 21 is slidably connected to a second retaining sleeve 23 that is vertically slidably mounted on the upright plate 5. The rotation of the turntable 14 drives the second retaining sleeve 23 to slide downwards, ultimately cooperating with the first retaining sleeve 6 to position and lock the cable. The horizontal drive of the first retaining sleeve 6 is achieved by the ramp 17 of the guide block 16. Combined with the staggered distribution design of the first retaining sleeve 6 and the second retaining sleeve 23, the problem of narrow assembly space in traditional structures is effectively solved. At the same time, the linkage between the turntable 14 and the slide rod 21 provides a convenient driving method for cable locking, ensuring that subsequent locking operations are efficient and feasible.

[0040] As Figures 1 to 7 shown, in a specific embodiment, the base 2 is installed at the bottom of the support insulator body 1, the base 2 is in the shape of a Chinese character, a pair of positioning holes 3 are formed on the base 2, the positioning holes 3 are in the shape of a Chinese character, and the positioning holes 3 are used to facilitate the connection between the support insulator body 1 and the external structure. Through the adaptive design of the Chinese character-shaped base 2 and the Chinese character-shaped positioning hole 3, the support insulator body 1 and the external structure can be quickly connected without the need for additional adapter, which provides a stable installation foundation for the entire device and improves the on-site installation efficiency.

[0041] Example 2:

[0042] Based on the above embodiment, the difference between the present embodiment is that, as Figures 1 to 7 shown, a notch 7 is formed at the bottom of the first sleeve 6, a plug rod 8 is horizontally installed inside the notch 7, the plug rod 8 movably penetrates the vertical plate 5, a positioning plate 9 is installed at the end of the plug rod 8, the diameter of the positioning plate 9 is larger than that of the plug rod 8, a compression spring 10 is sleeved on the outer sidewall of the plug rod 8, one end of the compression spring 10 is clamped on the sidewall of the vertical plate 5, and the other end of the compression spring 10 is clamped on the inner sidewall of the notch 7. The cooperation of the plug rod 8 and the vertical plate 5 ensures the stable movement track of the first sleeve 6, the positioning plate 9 can effectively prevent the plug rod 8 from falling off the vertical plate 5, and the compression spring 10 can store elastic potential energy when the first sleeve 6 moves, which provides power for the subsequent device reset, avoiding the trouble of manual adjustment for reset in traditional structure.

[0043] As Figures 1 to 7 shown, in a specific embodiment, a fixed block 30 is installed on the sidewall of the vertical plate 5, a plug plate 11 movably penetrates the fixed block 30, a connecting plate 12 is installed at the end of the plug plate 11, a ball 13 is installed at the end of the connecting plate 12, and the ball 13 is slidably arranged on the surface of a rotating disc 14. Through the limiting effect of the fixed block 30 on the plug plate 11, the horizontal movement of the plug plate 11 is ensured to be without deviation, and the ball 13 at the end of the connecting plate 12 converts the sliding friction between the plug plate 11 and the rotating disc 14 into rolling friction, which greatly reduces the transmission resistance, making the process of driving the plug plate 11 by the rotating disc 14 more smooth and reducing the wear of the components.

[0044] As Figures 1 to 7As shown, further, the end face of the vertical plate 5 is provided with an inner groove 20, the inner groove 20 is rotatably installed with a rotating disc 14, the rotating center of the rotating disc 14 is installed with a knob 15, the surface of the knob 15 is knurled, the rotating disc 14 is installed with a through hole 18, the inner groove 20 is provided with an installation groove 19, the distance from the through hole 18 to the rotating center of the rotating disc 14 is the same as that of the installation groove 19, when the through hole 18 corresponds to the installation groove 19, the angle of the rotating disc 14 is positioned by screw locking. The knurled knob 15 increases the friction of the hand, preventing slipping during operation; the cooperation of the through hole 18 and the installation groove 19 can fix the angle of the rotating disc 14 by bolts, ensuring that the locking state is stable for a long time, avoiding self-rotation of the rotating disc 14 due to vibration.

[0045] As shown in the figure, Figures 1 to 7 Further, the first sleeve 6 is provided with a clamping groove 29, and the bottom of the second sleeve 23 is provided with a clamping block 28, and the clamping block 28 corresponds to the clamping groove 29. The inner groove 20 provides a stable rotating space for the rotating disc 14, avoiding axial deviation of the rotating disc 14; through the precise corresponding design of the clamping block 28 and the clamping groove 29, the first sleeve 6 and the second sleeve 23 can be tightly fitted when locked, forming a wrapping type fixation of the cable, greatly improving the fitting degree and stability of the locking, effectively preventing the cable from loosening or deviating in long-term use.

[0046] As shown in the figure, Figures 1 to 7 Further, the side wall of the second sleeve 23 is provided with a sliding plate 24, the inner side wall of the sliding plate 24 is provided with a strip-shaped groove 25, the strip-shaped groove 25 is slidably provided with a sliding rod 21, the vertical plate 5 is provided with a through groove 22, the sliding rod 21 is slidably arranged in the through groove 22, and the through groove 22 is an arc-shaped groove. The track of the arc-shaped through groove 22 is completely matched with the movement track of the rotating disc 14 driving the sliding rod 21, ensuring that the sliding rod 21 slides without jamming; the strip-shaped groove 25 provides a vertical movement space for the sliding rod 21, so that the sliding rod 21 can smoothly drive the sliding plate 24 and the second sleeve 23 to move vertically, ensuring the accurate movement direction of the second sleeve 23.

[0047] As shown in the figure, Figures 1 to 7 Further, the side wall of the sliding plate 24 is vertically penetrated and installed with a limiting rod 26, the limiting rod 26 is installed with a limiting seat 27 at both ends, and the limiting seat 27 is welded on the side wall of the vertical plate 5. Through the cooperation of the limiting rod 26 and the limiting seat 27, the movement direction of the sliding plate 24 is strictly limited, ensuring that the sliding plate 24 can only slide in the vertical direction, avoiding left and right deviation of the second sleeve 23 during movement, so as to ensure that the clamping block 28 at the bottom of the second sleeve 23 can accurately align with the clamping groove 29 of the first sleeve 6.

[0048] Embodiment 3:

[0049] The application also discloses a preparation method of the support insulator.

[0050] Step one: raw material preparation, select insulating material to prepare the pillar insulator body 1, metal material to prepare the remaining parts;

[0051] Step two: part processing, the insulating material is shaped to obtain the pillar insulator body 1, the metal parts are cut, punched, and processed, wherein the rotating disc 14 is processed with the slope 17 and the through hole 18, and the second sleeve 23 is processed with the clamping block 28;

[0052] Step three: part pre-assembly, the insertion rod 8 and the compression spring 10 are assembled in the first sleeve 6, the sliding rod 21 is assembled in the rotating disc 14, and the limiting rod 26 is assembled with the limiting seat 27;

[0053] Step four: overall assembly, the pillar insulator body 1 is connected with the base 2, the support 4 and the vertical plate 5 are sequentially installed, the insertion plate 11 is connected with the first sleeve 6 after penetrating the vertical plate 5, the rotating disc 14 is assembled in the inner groove 20, and the second sleeve 23 is assembled by cooperating with the sliding plate 24, the strip-shaped groove 25 and the sliding rod 21;

[0054] Step five: detection and acceptance, the cooperation degree of each part is checked, the locking effect of the first sleeve 6 and the second sleeve 23 is tested, the insulation performance of the pillar insulator body 1 is verified, and the preparation is completed after being qualified.

[0055] The implementation principle of the pillar insulator: when the pillar insulator is actually used, first, the base 2 at the bottom of the pillar insulator body 1 is in the form of a character, and a pair of character-shaped positioning holes 3 are formed on the base 2, so that the entire device is stably connected with the external structure, thereby providing a stable foundation for subsequent cable positioning. In the initial state, the first sleeve 6 and the second sleeve 23 are in a separated state, and the staggered distribution structure design increases the assembly space, which facilitates the operator to install the cable to the specified position of the steel frame.

[0056] When the cable needs to be positioned and locked, the operator holds the rotating knob 15 at the rotating center of the rotating disc 14 and applies force, so that the rotating disc 14 stably rotates in the inner groove 20. With the rotation of the rotating disc 14, the guide block 16 installed on the surface thereof rotates synchronously, and the slope 17 at one end of the guide block 16 gradually contacts the ball 13 installed on the connecting plate 12 at the end of the insertion plate 11. Since the ball 13 is slidably arranged on the surface of the rotating disc 14, the inclined structure of the slope 17 generates a horizontal pushing force on the ball 13, thereby pushing the connecting plate 12 to move the insertion plate 11 towards the second sleeve 23, and the end of the insertion plate 11 away from the connecting plate 12 drives the first sleeve 6 to move synchronously. In this process, the insertion rod 8 horizontally installed in the notch 7 at the bottom of the first sleeve 6 moves in and out of the vertical plate 5, and the compression spring 10 sleeved on the outer side wall of the insertion rod 8 is clamped at one end on the side wall of the vertical plate 5 and at the other end on the inner side wall of the notch 7. The compression spring 10 is gradually compressed and stores elastic potential energy, thereby preparing for the subsequent part reset.

[0057] Meanwhile, the slide rod 21 installed on the back of the rotating disc 14 moves synchronously with the rotation of the rotating disc 14, and the slide rod 21 not only slides in the through slot 22 provided on the vertical plate 5, but also slides in the strip-shaped slot 25 provided on the inner side wall of the slide plate 24 installed on the side wall of the second sleeve 23. Therefore, the arc-shaped sliding of the slide rod 21 generates a vertical force on the strip-shaped slot 25, which pushes the slide plate 24 to slide vertically downward along the limiting rod 26. The limiting rod 26 vertically penetrates the slide plate 24, and the limiting seats 27 installed on both ends of the limiting rod 26 are welded on the side wall of the vertical plate 5, which can strictly limit the movement direction of the slide plate 24 and avoid deviation. The slide plate 24 drives the second sleeve 23 to move downward synchronously, so that the clamping block 28 installed on the bottom of the second sleeve 23 gradually approaches the clamping slot 29 provided on the first sleeve 6.

[0058] When the rotating disc 14 rotates to a preset angle, the through hole 18 provided on the rotating disc 14 is aligned with the mounting slot 19 provided on the inner recess 20. At this time, the rotating disc 14 is locked and positioned by the bolts penetrating the through hole 18 and the mounting slot 19, to prevent it from rotating in subsequent use. At this time, the first sleeve 6 has been accurately corresponded to the second sleeve 23 under the pushing of the plug-in plate 11, and the clamping block 28 of the second sleeve 23 and the clamping slot 29 of the first sleeve 6 are mutually clamped, so that stable positioning and locking of the cable are realized, and deviation or loosening of the cable in the running process is avoided.

[0059] If the cable needs to be adjusted or disassembled subsequently, only the locking bolts need to be removed, and the rotating knob 15 is reversely rotated to drive the rotating disc 14 to reset. At this time, the pushing force of the slope 17 on the ball 13 disappears, the elastic potential energy of the compression spring 10 pushes the first sleeve 6 to move away from the second sleeve 23, and the plug-in plate 11 and the connecting plate 12 reset with the first sleeve 6. At the same time, the slide rod 21 reversely slides along the through slot 22 and the strip-shaped slot 25, drives the slide plate 24 and the second sleeve 23 to reset vertically upward along the limiting rod 26, and the clamping block 28 and the clamping slot 29 are separated, so that the locking of the cable is released. In the whole process, the support insulator body 1 always plays an insulating role to ensure the safety of the cable operation, and the support 4 and the vertical plate 5 provide stable mounting support for the moving parts to ensure the stability of the overall structure and the reliability of the operation.

Claims

1. A post insulator, comprising a post insulator body (1) and a first clamping sleeve (6) and a second clamping sleeve (23), characterized in that: A bracket (4) is installed on the main body (1) of the post insulator. A vertical plate (5) is installed on the bracket (4). An insert plate (11) is installed through the vertical plate (5). A first clamp (6) for positioning the cable is installed at one end of the insert plate (11). The other end of the insert plate (11) is slidably connected to a turntable (14) that is rotatably installed on the side wall of the vertical plate (5). A guide block (16) is installed on the turntable (14). A ramp (17) is opened at one end of the guide block (16). The ramp (17) is used to drive the insert plate (11) to move the first clamp (6) to the side of the second clamp (23). The first clamp (6) and the second clamp (23) are staggered. The staggered first clamp (6) and the second clamp (23) increase the assembly space and make cable installation more convenient. The turntable (14) has a slide rod (21) installed on its back. The slide rod (21) is slidably connected to the second sleeve (23) that is vertically slidably set on the upright plate (5). The turntable (14) rotates and drives the second sleeve (23) to slide downward, and finally cooperates with the first sleeve (6) to position and lock the cable.

2. A post insulator according to claim 1, characterized in that The bottom of the post insulator body (1) is equipped with a base (2), which is in the shape of a straight line. A pair of positioning holes (3) are provided on the base (2), which are in the shape of a straight line. The positioning holes (3) are used to facilitate the connection between the post insulator body (1) and the external structure.

3. A post insulator according to claim 1, characterized in that, The first sleeve (6) has a notch (7) at the bottom. A rod (8) is horizontally installed inside the notch (7). The rod (8) passes through the upright plate (5). A positioning plate (9) is installed at the end of the rod (8). The diameter of the positioning plate (9) is larger than the diameter of the rod (8). A compression spring (10) is sleeved on the outer wall of the rod (8). One end of the compression spring (10) is engaged with the side wall of the upright plate (5), and the other end of the compression spring (10) is engaged with the inner side wall of the notch (7).

4. A post insulator according to claim 1, characterized in that, A fixing block (30) is installed on the side wall of the upright plate (5), and the insert plate (11) moves through the fixing block (30). A connecting plate (12) is installed at the end of the insert plate (11), and a ball bearing (13) is installed at the end of the connecting plate (12). The ball bearing (13) is slidably disposed on the surface of the turntable (14).

5. A post insulator according to claim 1, characterized in that, The end face of the upright plate (5) is provided with an inner groove (20), and a turntable (14) is rotatably installed inside the inner groove (20). A knob (15) is installed at the rotation center of the turntable (14), and the surface of the knob (15) is knurled. A through hole (18) is installed on the turntable (14), and an installation groove (19) is provided on the inner groove (20). The distance between the installation groove (19) and the through hole (18) and the rotation center of the turntable (14) is the same. When the through hole (18) corresponds to the installation groove (19), the angle of the turntable (14) is locked by bolts.

6. A post insulator according to claim 1, characterized in that, The first card sleeve (6) has a card slot (29), and the second card sleeve (23) has a card block (28) installed at the bottom, with the card block (28) corresponding to the card slot (29).

7. A post insulator according to claim 1, characterized in that, The second sleeve (23) has a sliding plate (24) installed on its side wall. The inner side wall of the sliding plate (24) has a strip groove (25). A sliding rod (21) is slidably arranged on the strip groove (25). A through groove (22) is opened on the upright plate (5). The sliding rod (21) is slidably arranged in the through groove (22), and the through groove (22) is an arc groove.

8. A post insulator according to claim 7, characterized in that, A limit rod (26) is vertically installed through the side wall of the slide plate (24), and a limit seat (27) is installed at both ends of the limit rod (26). The side wall of the limit seat (27) is welded to the side wall of the upright plate (5).

9. A method for preparing a post insulator, characterized in that, The method for preparing a post insulator according to any one of claims 1 to 8 comprises the following steps: Step 1: Raw material preparation, select insulating materials to prepare the main body of the post insulator (1), and use metal materials to prepare the remaining parts; Step 2: Component processing. The insulating material is shaped to obtain the main body (1) of the post insulator. The metal parts are cut and drilled. The turntable (14) is processed with a ramp (17) and a through hole (18). The second sleeve (23) is processed with a clamping block (28). Step 3: Pre-assembly of components: Install the insert rod (8) and compression spring (10) into the first ferrule (6), install the slide rod (21) into the turntable (14), and assemble the limiting rod (26) and the limiting seat (27); Step 4: Overall assembly. The post insulator body (1) is connected to the base (2). The bracket (4) and the upright plate (5) are installed in sequence. The insert plate (11) passes through the upright plate (5) and is connected to the first clamp (6). The turntable (14) is installed in the inner groove (20). The second clamp (23) is installed by the sliding plate (24), the strip groove (25) and the sliding rod (21). Step 5: Inspection and acceptance. Check the fit of each component, test the locking effect of the first ferrule (6) and the second ferrule (23), verify the insulation performance of the post insulator body (1), and complete the preparation after passing the test.

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