Capacitor porcelain bushing insulator

Abstract

The invention discloses a capacitor porcelain bushing insulator which comprises a ceramic bushing and a lever assembly. A ceramic seat is movably inserted into the lower end of the ceramic sleeve, a conducting rod is movably inserted into the middle of the ceramic sleeve, the lower end of the conducting rod extends out of the lower surface of the ceramic seat and is provided with a conducting seat, an annular groove is formed in the upper end of the outer arc surface of the conducting rod, and a ceramic cover is slidably connected to the upper end of the ceramic sleeve; the upper end of the ceramic sleeve is rotationally connected with two symmetrically-arranged eccentric shafts, and the ends, away from the ceramic sleeve, of the eccentric shafts penetrate out of the outer arc face of the ceramic cover and are fixedly connected with the handle frame. The lever assembly is used for linkage control of the ceramic cover and the conducting rod, the capacitor porcelain bushing insulator can fully wrap the internal conductor, the capacitor shell and the power line can be fixed at the same time by pulling the handle frame, the internal conductor does not need to be contacted during fixing, and the capacitor porcelain bushing insulator is easy to install, convenient to use and high in safety.

Description

Technical Field

[0001] The invention relates to the technical field of power accessories, in particular to a capacitor porcelain sleeve insulator. Background Art

[0002] High-voltage capacitors play a vital role in the power system and are of great significance for maintaining the stable operation of the power network and improving energy efficiency. As an important component of the capacitor, the porcelain sleeve insulator has excellent electrical insulation performance, which can effectively isolate the electrical connection between the internal conductor of the capacitor and the outer shell, prevent current leakage, and ensure the safe operation of the capacitor. The existing capacitor porcelain sleeve insulator is generally a ceramic tube type, the lower end of which is connected to the capacitor shell, and the conductor of the capacitor passes through the middle of the ceramic tube. The upper end of the conductor is generally exposed. When in use, the power cord is pressed onto the upper end of the conductor using a nut. The structure is simple and the cost of use is low, but a wrench needs to be used to tighten the nut during the fixing process. The nut generally needs to be turned multiple times to fix it, which is less convenient. It is connected to the conductor during installation, and the conductor may be energized. In addition, the upper end is exposed during use and lacks insulation protection, which leads to the risk of electric shock and low safety. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a capacitor porcelain sleeve insulator that can fully wrap the internal conductor. The capacitor housing and the power cord can be fixed at the same time by pulling the handle frame without touching the internal conductor during fixing. The capacitor porcelain sleeve insulator is simple to install, convenient to use, and highly safe, and can effectively solve the problems in the background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: a capacitor porcelain sleeve insulator, comprising a ceramic sleeve and a lever assembly;

[0005] Ceramic sleeve: a ceramic seat is movably inserted at its lower end, a conductive rod is movably inserted at the middle of the ceramic sleeve, the lower end of the conductive rod extends out of the lower surface of the ceramic seat and is provided with a conductive seat, an annular groove is provided at the upper end of the outer arc surface of the conductive rod, a ceramic cover is slidably connected to the upper end of the ceramic sleeve, and two symmetrically arranged eccentric shafts are rotatably connected to the upper end of the ceramic sleeve, and the ends of the eccentric shafts away from the ceramic sleeve all penetrate the outer arc surface of the ceramic cover and are fixedly connected to the handle frame;

[0006] Lever assembly: used for linkage control of ceramic cover and conductive rod, the whole is composed of mutually plugged ceramic seat, ceramic sleeve and ceramic cover. During use, it can completely wrap the internal conductor, provide good insulation protection, and avoid electric shock accidents. The porcelain sleeve insulator greatly improves the safety of capacitors when in use. The handle can control the synchronous movement of the ceramic seat, ceramic sleeve, conductive rod and ceramic cover through the eccentric shaft structure and the lever, and the capacitor housing and power cord can be fixed synchronously, so the convenience of fixing and replacing greatly improves the convenience of using the capacitor porcelain sleeve insulator.

[0007] Furthermore, a spring pin is provided at the front end of the handle frame, and a circular hole is opened on the outer arc surface of the ceramic cover, which is matched with the spring pin. A handle is provided at the right end of the handle frame, and positioning grooves corresponding to the handle frame are opened at the ends of the two eccentric shafts away from the ceramic sleeve to facilitate the control of the handle frame.

[0008] Furthermore, the spring pin includes a pin shaft, a retaining ring, a spring 2 and a fixed seat. The pin shaft is slidably connected to the front end of the handle frame. A fixed seat is provided at the left end of the front side of the handle frame. The front end of the pin shaft is slidably connected to the front end of the fixed seat. A retaining ring is provided in the middle of the outer arc surface of the pin shaft. The front end of the outer arc surface of the pin shaft is movably sleeved with a spring 2. The spring 2 is located between the retaining ring and the front side wall of the fixed seat and can automatically pop out to position.

[0009] Furthermore, a spring three is provided on the upper side wall of the ceramic cover, and a pressure plate is provided at the lower end of the spring three to facilitate the tightening of the power cord.

[0010] Furthermore, a conductive sleeve is provided on the lower surface of the pressing plate, and the lower end of the conductive sleeve is movably connected to the upper end of the conductive rod, thereby increasing the conductive area and providing a moving guide.

[0011] Furthermore, the lever assembly includes a support shaft 1 and a lever. There are two support shafts 1, which are symmetrically arranged inside the upper end of the ceramic sleeve. Rear levers are installed in the middle of the two support shafts 1. The ends of the two levers close to the conductive rod are cooperated with the annular groove, and the ends of the two levers away from the conductive rod are cooperated with the ceramic cover, so as to facilitate the control of the movement of the ceramic cover and the conductive rod.

[0012] Furthermore, the lever assembly also includes a support shaft 2 and a spring sheet, and the number of the spring sheets is two, both of which are arranged inside the upper end of the ceramic sleeve. The two support shafts 2 are both arranged inside the upper end of the ceramic sleeve. The support shaft 2 and the spring sheet are both arranged in cooperation with the vertically corresponding lever to maintain the horizontal state of the spring sheet.

[0013] Furthermore, the lever assembly also includes a slip ring, a sliding shaft, a baffle and a spring. The slip rings are respectively arranged on the lower surfaces of the two levers. The interiors of the two slip rings are slidably connected with sliding shafts. The middle parts of the outer arc surfaces of the two sliding shafts are movably sleeved with springs. Baffles are provided at one end of the two sliding shafts close to the conductive rod. The spring is located between the slip ring and the baffle on the same sliding shaft. The two support shafts are located between the two baffles to facilitate the pop-up of the control lever.

[0014] Furthermore, a rainproof cover is provided at the wire inlet hole on the outer arc surface of the ceramic cover, a rubber block is provided on the upper side wall of the wire inlet hole on the outer arc surface of the ceramic cover, an upper rubber pad is provided at the shoulder and neck of the upper end of the ceramic sleeve, a rubber pad three is provided at the lower end of the ceramic sleeve, and a rubber pad two is provided on the upper surface of the flange at the lower end of the ceramic seat to improve the overall sealing.

[0015] Furthermore, a rubber pad is provided on the lower surface of the ceramic seat to prevent the ceramic seat from being crushed.

[0016] Compared with the prior art, the invention has the following advantages:

[0017] 1. The whole is composed of a ceramic base, a ceramic sleeve and a ceramic cover that are plugged into each other. During use, it can completely wrap the internal conductor, provide good insulation protection, and avoid electric shock accidents. The porcelain sleeve insulator greatly improves the safety of the capacitor when used.

[0018] 2. During the installation process, the handle can be pulled through the eccentric shaft structure and the lever to control the synchronous movement of the ceramic seat, ceramic sleeve, conductive rod and ceramic cover, and the capacitor housing and power cord can be fixed synchronously, which greatly improves the convenience of use of the capacitor porcelain sleeve insulator.

[0019] 3. When fixing, the lever structure can be first inserted horizontally and then tilted up to fix. When disassembling, the lever structure can automatically pop out and separate from the conductive rod. During the replacement process, the operator can avoid touching the internal conductor. The structure is simple, the ceramic sleeve is easy to replace, and the use safety is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a schematic cross-sectional structural diagram of the ceramic sleeve of the present invention;

[0022] Figure 3 This is a schematic diagram of the enlarged structure of location A of the present invention;

[0023] Figure 4 This is an enlarged structural diagram of B of the present invention;

[0024] Figure 5 This is a schematic diagram of the enlarged structure of position C of the present invention;

[0025] Figure 6 It is a schematic cross-sectional structure diagram of the eccentric shaft of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the ceramic sleeve of the present invention.

[0027] In the figure: 1 ceramic sleeve, 2 ceramic seat, 3 conductive rod, 4 ceramic cover, 5 eccentric shaft, 6 lever assembly, 61 support shaft one, 62 lever, 63 support shaft two, 64 spring sheet, 65 slip ring, 66 sliding shaft, 67 baffle, 68 spring one, 7 handle frame, 8 handle, 9 spring pin, 91 pin shaft, 92 baffle ring, 93 spring two, 94 fixed seat, 10 spring three, 11 pressure plate, 12 conductive sleeve, 13 rain cover, 14 rubber block, 15 upper rubber pad, 16 conductive seat, 17 rubber pad one, 18 rubber pad two, 19 rubber pad three, 20 positioning groove, 21 round hole, 22 annular groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-7 , This embodiment provides a technical solution: a capacitor porcelain sleeve insulator, including a ceramic sleeve 1 and a lever assembly 6;

[0030] Ceramic sleeve 1: A ceramic seat 2 is movably inserted at its lower end, a conductive rod 3 is movably inserted at the middle of the ceramic sleeve 1, the ceramic sleeve 1 provides insulation protection for the conductive rod 3, the conductive rod 3 is a brass conductive rod, the lower end of the conductive rod 3 extends out of the lower surface of the ceramic seat 2 and is provided with a conductive seat 16, the conductive seat 16 is a brass conductive seat, the conductive rod 3 and the conductive seat 16 are passed through the ceramic seat 2 from bottom to top, the conductive seat 16 is connected to the electrode inside the capacitor, an annular groove 22 is provided at the upper end of the outer arc surface of the conductive rod 3, the upper end of the ceramic sleeve 1 is slidably connected to a ceramic cover 4, the upper end of the ceramic sleeve 1 is rotatably connected to two symmetrically arranged eccentric shafts 5, the eccentric shafts 5 at one end away from the ceramic sleeve 1 all penetrate the outer arc surface of the ceramic cover 4 and are fixedly connected to the handle frame 7, the eccentric shaft 5 and the handle frame 7 The eccentric shaft 5 and the handle frame 7 are connected by screws. After loosening the screws, the eccentric shaft 5 and the handle frame 7 can be separated. After the handle frame 7 is removed, the eccentric shaft 5 can be removed. After the eccentric shaft 5 is removed, the ceramic cover 4 and the ceramic sleeve 1 can be separated, and then the ceramic cover 4 or the ceramic sleeve 1 can be replaced individually. The handle frame 7 drives the eccentric shaft 5 to rotate. The axis line of the eccentric shaft 5 away from the end column of the conductive rod 3 does not coincide with the axis line of rotation. The eccentric shaft 5 away from the outer arc surface of the conductive rod 3 and the long sliding hole of the outer arc surface of the ceramic cover 4 slide relative to each other. The eccentric shaft 5 moves away from the axis line of the column of the end of the conductive rod 3 and gradually moves downward, which will drive the ceramic cover 4 to move downward. The upper side wall of the ceramic cover 4 is provided with a spring three 10, and the lower end of the spring three 10 is provided with a pressure plate 11. The ceramic cover 4 will move downward through the spring Spring three 10 drives the pressure plate 11 to move downward to press the power line to the upper end of the conductive rod 3. The pressure plate 11 is a brass pressure plate that can conduct electricity. The spring three 10 can undergo elastic deformation to ensure the firmness of the power line end. A conductive sleeve 12 is provided on the lower surface of the pressure plate 11. The conductive sleeve 12 is a brass conductive sleeve that conducts electricity and provides a mobile guide for the pressure plate 11. The power line is inserted from the wire entry hole on the outer arc surface of the ceramic cover 4 to the upper end of the conductive sleeve 12. The end of the power line is located below the pressure plate 11. The lower end of the conductive sleeve 12 is movably connected to the upper end of the conductive rod 3. A rain cover 13 is provided at the wire entry hole on the outer arc surface of the ceramic cover 4. The rain cover 13 covers the wire entry hole of the ceramic cover 4. The upper side wall of the wire entry hole on the outer arc surface of the ceramic cover 4 is provided with a rubber block 14 , the rubber block 14 moves downward and the distance between it and the ceramic sleeve 1 is reduced to compress the power line. An upper rubber pad 15 is provided at the shoulder and neck of the upper end of the ceramic sleeve 1. After the ceramic cover 4 moves downward, the upper surface of the upper rubber pad 15 contacts the lower end of the ceramic cover 4 for sealing. A rubber pad 3 19 is provided at the lower end of the ceramic sleeve 1. The ceramic cover 4, the ceramic sleeve 1 and the rubber pad 3 19 are plugged into the upper end of the conductive rod 3 from top to bottom. A rubber pad 2 18 is provided on the upper surface of the flange at the lower end of the ceramic seat 2. The conductive rod 3 drives the ceramic seat 2 to move upward through the conductive seat 16 and the rubber pad 1 17. The ceramic seat 2 drives the rubber pad 2 18 to move upward, and the ceramic sleeve 1 drives the rubber pad 3 19 to move downward, and then the ceramic seat 2 and the ceramic sleeve 1 gradually clamp the upper cover of the capacitor through the rubber pad 2 18 and the rubber pad 3 19.The rubber pad 2 18 and the rubber pad 3 19 seal the upper and lower sides of the capacitor cover plate. The lower surface of the ceramic seat 2 is provided with a rubber pad 17. The ceramic seat 2, the rubber pad 17 and the rubber pad 2 18 are passed through the capacitor cover plate from bottom to top. The rubber pad 2 18 contacts the upper side wall of the capacitor cover plate. The rubber pad 1 17 can adapt to the uneven surface of the ceramic seat 2 to prevent the conductive seat 16 from crushing the ceramic seat 2.

[0031] Lever assembly 6: used for linkage control of ceramic cover 4 and conductive rod 3, lever assembly 6 includes support shaft 1 61 and lever 62, there are two support shafts 61, two support shafts 61 are symmetrically arranged inside the upper end of ceramic sleeve 1, rear levers 62 are installed in the middle of two support shafts 1, one end of two levers 62 close to conductive rod 3 is matched with annular groove 22, one end of two levers 62 away from conductive rod 3 is matched with ceramic cover 4, lever assembly 6 also includes support shaft 2 63 and spring sheet 64, there are two spring sheets 64, both are arranged inside the upper end of ceramic sleeve 1, two support shafts 2 63 are arranged inside the upper end of ceramic sleeve 1, support shaft 2 63 and spring sheet 64 are matched with vertically corresponding lever 62, the inclined slide groove at the lower end of ceramic cover 4 contacts with the outer end of lever 62, ceramic cover 4 gradually pushes lever 62 to move along support shaft 1 61 and support shaft 2 63 in the direction close to conductive rod 3 and insert into the inner part of annular groove 22, when translated, lever 62 moves longitudinally without The spring sheet 64 has a large stiffness coefficient, which can ensure that the lever 62 will not tilt up. The spring sheet 64 and the lever 62 rub against each other. When the lever 62 cannot move horizontally, the lever 62 will rotate around the support shaft 61. The end of the lever 62 inside the annular groove 22 tilts upward, and the spring sheet 64 undergoes elastic deformation. At the same time, the ceramic sleeve 1 and the conductive rod 3 will move up and down relative to each other. The lever assembly 6 also includes a slip ring 65, a sliding shaft 66, a baffle 67 and a spring 68. The slip ring 65 is divided into The two slide rings 65 are respectively arranged on the lower surface of the two levers 62. The inside of the two slide rings 65 is slidably connected with a slide shaft 66. The middle part of the outer arc surface of the two slide shafts 66 is movably sleeved with a spring 1 68. The ends of the two slide shafts 66 close to the conductive rod 3 are provided with a baffle 67. The spring 1 68 is located between the slide ring 65 and the baffle 67 on the same slide shaft 66. The two support shafts 2 63 are located between the two baffles 67. The support shafts 2 63 block the movement of the baffle 67. The lever 62 drives the slide ring 65 to move synchronously to compress the spring 1 68.

[0032] Among them: a spring pin 9 is provided at the front end of the handle frame 7, a circular hole 21 is provided on the outer arc surface of the ceramic cover 4, and the circular hole 21 is arranged in cooperation with the spring pin 9. A handle 8 is provided at the right end of the handle frame 7. The handle frame 7 is rotated counterclockwise by the handle 8. The ends of the two eccentric shafts 5 away from the ceramic sleeve 1 are provided with positioning grooves 20 corresponding to the handle frame 7. The positioning grooves 20 position the handle frame 7 to improve the firmness of the fixation. The spring pin 9 includes a pin shaft 91, a retaining ring 92, a spring second 93 and a fixing seat 94. The pin shaft 91 is slidably connected to the front end of the handle frame 7. A fixing seat 94 is provided at the left end of the front side of the handle frame 7. The pin shaft 9 The front end of the handle frame 7 is slidably connected with the front end of the fixing seat 94, a retaining ring 92 is provided in the middle of the outer arc surface of the pin shaft 91, and a spring 2 93 is movably sleeved on the front end of the outer arc surface of the pin shaft 91. The spring 2 93 is located between the retaining ring 92 and the front side wall of the fixing seat 94. After the handle frame 7 rotates 180 degrees, the position of the pin shaft 91 corresponds to the position of the circular hole 21. The spring 2 93 pushes the pin shaft 91 to move backward through the retaining ring 92 under the support of the fixing seat 94, and the pin shaft 91 is inserted backward into the inside of the circular hole 21, thereby realizing the rotation of the handle frame 7, maintaining the locking state of the ceramic cover 4, and completing the installation of the capacitor porcelain sleeve insulator and the power line.

[0033] The working principle of a capacitor porcelain sleeve insulator provided by the present invention is as follows: when assembling the capacitor, the whole composed of a ceramic seat 2, a rubber pad 17 and a rubber pad 2 18 is passed through the capacitor upper cover from bottom to top, and the rubber pad 2 18 is in contact with the upper side wall of the capacitor upper cover. Then, the conductive rod 3 and the conductive seat 16 are passed through the ceramic seat 2 from bottom to top, and the conductive seat 16 is connected to the electrode inside the capacitor. Then, the ceramic cover 4, the ceramic sleeve 1 and the rubber pad 3 19 are plugged into the upper end of the conductive rod 3 from top to bottom, and then the power cord is inserted from the wire entry hole of the outer arc surface of the ceramic cover 4 into the upper end of the conductive sleeve 12. The end of the power cord is located below the pressing plate 11. Then, the handle frame 7 is rotated counterclockwise through the handle 8, and the handle frame 7 drives the eccentric shaft 5 to rotate. The eccentric shaft 5 The axis line of the column away from the end of the conductive rod 3 does not coincide with the axis line of rotation, and the eccentric shaft 5 moves away from the outer arc surface of the end of the conductive rod 3 and slides relative to the long sliding hole of the outer arc surface of the ceramic cover 4. The eccentric shaft 5 moves away from the axis line of the column of the end of the conductive rod 3 and gradually moves downward, which will drive the ceramic cover 4 to move downward. The inclined slide groove at the lower end of the ceramic cover 4 contacts the outer end of the lever 62, and the ceramic cover 4 gradually pushes the lever 62 along the support shaft 1 61 and the support shaft 2 63 to move toward the conductive rod 3 and insert it into the inner part of the annular groove 22. During translation, the longitudinal movement of the lever 62 is not hindered. At the same time, the spring sheet 64 has a large stiffness coefficient, which can ensure that the lever 62 will not tilt. The spring sheet 64 rubs against the lever 62, and the support shaft 2 63 blocks the movement of the blocking sheet 67. 2 drives the slip ring 65 to move synchronously with the compression spring 1 68. When the lever 62 cannot translate, the lever 62 will rotate around the support shaft 1 61, and one end of the lever 62 inside the annular groove 22 will tilt upward, and the spring sheet 64 will undergo elastic deformation. At the same time, the ceramic sleeve 1 and the conductive rod 3 will move up and down relative to each other. The conductive rod 3 drives the ceramic seat 2 to move upward through the conductive seat 16 and the rubber pad 1 17, and the ceramic seat 2 drives the rubber pad 2 18 to move upward, and the ceramic sleeve 1 drives the rubber pad 3 19 to move downward, and then the ceramic seat 2 and the ceramic sleeve 1 gradually clamp the upper cover of the capacitor through the rubber pad 2 18 and the rubber pad 3 19. At the same time, the ceramic cover 4 will drive the pressure plate 11 to move downward through the spring 3 10 to press the power line to the upper end of the conductive rod 3, and the spring 3 10 can undergo elastic deformation. The handle frame 7 is rotated 180 degrees to ensure the firmness of the power cord end. After the handle frame 7 is rotated 180 degrees, the pin shaft 91 corresponds to the position of the circular hole 21. The spring 2 93 pushes the pin shaft 91 to move backward through the retaining ring 92 under the support of the fixing seat 94. The pin shaft 91 is inserted backward into the inside of the circular hole 21, thereby realizing the rotation of the handle frame 7, maintaining the locking state of the ceramic cover 4, and completing the installation of the capacitor porcelain sleeve insulator and the power cord. When the ceramic sleeve 1 is damaged and needs to be replaced, the pin shaft 91 can be pulled forward to separate from the circular hole 21, and then the handle frame 7 is rotated clockwise to drive the ceramic cover 4 to move up and no longer squeeze the lever 62. The lever 62 gradually returns to a horizontal state under the action of the spring sheet 64, and the spring 1 68 pushes the lever 62 out of the annular groove 22 through the slip ring 65.Then the ceramic sleeve 1 can be removed for replacement. The eccentric shaft 5 and the handle frame 7 are connected by screws. After loosening the screws, the eccentric shaft 5 and the handle frame 7 can be separated. After the handle frame 7 is removed, the eccentric shaft 5 can be removed. After the eccentric shaft 5 is removed, the ceramic cover 4 and the ceramic sleeve 1 can be separated, and then the ceramic cover 4 or the ceramic sleeve 1 can be replaced alone.

[0034] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A capacitor porcelain insulator, characterized in that: It comprises a ceramic sleeve (1) and a lever assembly (6); A ceramic sleeve (1): a ceramic seat (2) is movably inserted at its lower end, a conductive rod (3) is movably inserted at the middle of the ceramic sleeve (1), the lower end of the conductive rod (3) extends out of the lower surface of the ceramic seat (2) and is provided with a conductive seat (16), an annular groove (22) is provided at the upper end of the outer arc surface of the conductive rod (3), the upper end of the ceramic sleeve (1) is slidably connected to a ceramic cover (4), the upper end of the ceramic sleeve (1) is rotatably connected to two symmetrically arranged eccentric shafts (5), the ends of the eccentric shafts (5) away from the ceramic sleeve (1) both pass through the outer arc surface of the ceramic cover (4) and are fixedly connected to the handle frame (7); Lever assembly (6): used for linkage control of the ceramic cover (4) and the conductive rod (3).

2. A capacitor porcelain sleeve insulator according to claim 1, characterized in that: A spring pin (9) is provided at the front end of the handle frame (7), a circular hole (21) is provided on the outer arc surface of the ceramic cover (4), the circular hole (21) and the spring pin (9) are arranged in cooperation, a handle (8) is provided at the right end of the handle frame (7), and a positioning groove (20) corresponding to the handle frame (7) is provided at one end of the two eccentric shafts (5) away from the ceramic sleeve (1).

3. A capacitor porcelain sleeve insulator according to claim 2, characterized in that: The spring pin (9) comprises a pin shaft (91), a retaining ring (92), a second spring (93) and a fixing seat (94); the pin shaft (91) is slidably connected to the front end of the handle frame (7); a fixing seat (94) is provided at the left end of the front side surface of the handle frame (7); the front end of the pin shaft (91) is slidably connected to the front end of the fixing seat (94); a retaining ring (92) is provided at the middle of the outer arc surface of the pin shaft (91); a second spring (93) is movably sleeved at the front end of the outer arc surface of the pin shaft (91); and the second spring (93) is located between the retaining ring (92) and the front side wall of the fixing seat (94).

4. A capacitor porcelain sleeve insulator according to claim 1, characterized in that: A spring three (10) is provided on the upper side wall of the ceramic cover (4), and a pressing plate (11) is provided at the lower end of the spring three (10).

5. A capacitor porcelain sleeve insulator according to claim 4, characterized in that: A conductive sleeve (12) is provided on the lower surface of the pressing plate (11), and the lower end of the conductive sleeve (12) is movably sleeved with the upper end of the conductive rod (3).

6. A capacitor porcelain sleeve insulator according to claim 1, characterized in that: The lever assembly (6) comprises a support shaft (61) and a lever (62). There are two support shafts (61). The two support shafts (61) are symmetrically arranged inside the upper end of the ceramic sleeve (1). The middle parts of the two support shafts (61) are both equipped with rear levers (62). The ends of the two levers (62) close to the conductive rod (3) are both arranged in cooperation with the annular groove (22), and the ends of the two levers (62) away from the conductive rod (3) are both arranged in cooperation with the ceramic cover (4).

7. A capacitor porcelain sleeve insulator according to claim 6, characterized in that: The lever assembly (6) further comprises a second support shaft (63) and a spring sheet (64). The number of the spring sheets (64) is two and both are arranged inside the upper end of the ceramic sleeve (1). The two second support shafts (63) are both arranged inside the upper end of the ceramic sleeve (1). The second support shafts (63) and the spring sheet (64) are both arranged in cooperation with the vertically corresponding lever (62).

8. A capacitor porcelain sleeve insulator according to claim 6, characterized in that: The lever assembly (6) further comprises a slip ring (65), a sliding shaft (66), a baffle (67) and a spring (68); the slip rings (65) are respectively arranged on the lower surfaces of the two levers (62); the interiors of the two slip rings (65) are slidably connected with the sliding shafts (66); the middle parts of the outer arc surfaces of the two sliding shafts (66) are movably sleeved with springs (68); the ends of the two sliding shafts (66) close to the conductive rod (3) are provided with baffles (67); the spring (68) is located between the slip ring (65) and the baffle (67) on the same sliding shaft (66); and the two support shafts (63) are located between the two baffles (67).

9. A capacitor porcelain sleeve insulator according to claim 1, characterized in that: A rain cover (13) is provided at the wire inlet hole on the outer arc surface of the ceramic cover (4), a rubber block (14) is provided on the upper side wall of the wire inlet hole on the outer arc surface of the ceramic cover (4), an upper rubber pad (15) is provided at the neck of the upper end of the ceramic sleeve (1), a rubber pad three (19) is provided at the lower end of the ceramic sleeve (1), and a rubber pad two (18) is provided on the upper surface of the flange at the lower end of the ceramic seat (2).

10. A capacitor porcelain sleeve insulator according to claim 1, characterized in that: A rubber pad (17) is provided on the lower surface of the ceramic seat (2).

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