Vacuum interrupter sealing arrangement aligning device

Abstract

This invention relates to the sealing and lining of vacuum interrupters, and particularly to a vacuum interrupter sealing and lining alignment device. The vacuum interrupter sealing and lining alignment device includes a base with at least three locating claw mounting seats distributed circumferentially on the base. Each locating claw mounting seat has a locating claw extending towards its distribution centerline. Each locating claw is used to simultaneously contact the outer circumferential surface of a corresponding component on the vacuum interrupter, ensuring that the axis of the corresponding component is coaxial with the distribution centerline. At least two locating claws are provided in the vertical direction for positioning different components, or the locating claws can be adjusted vertically to position components at different heights. This invention solves the problem of difficulty in guaranteeing the radial positioning quality and consistency of components in the prior art when using a single sealing and lining process for vacuum interrupters.

Description

Technical Field

[0001] This invention relates to the sealing of a vacuum interrupter, and particularly to a sealing alignment device for a vacuum interrupter. Background Technology

[0002] For a long time, SF6 switches have dominated power systems, especially in switchgear with voltage levels above 110kV. However, the increasing severity of global warming has led to increasingly strict restrictions and even bans on the use of SF6, a strong greenhouse gas, since the Kyoto Conference in 1997. Vacuum interrupters, as a type of breaking unit that uses vacuum as the arc-extinguishing medium and the insulating medium for the contact gap after arc extinguishing, do not contain SF6 gas. They have advantages such as energy saving, material saving, fire prevention, explosion prevention, small size, light weight, environmental friendliness, and reliable operation, and are gradually being promoted from medium-voltage distribution levels to high-voltage transmission levels. Existing vacuum interrupters, such as the one disclosed in Chinese invention patent CN104715962B, mainly include a porcelain shell, a moving end cover plate, a stationary end cover plate, and a shielding cover. The shielding cover is divided into a stationary end shielding cover, a moving end shielding cover, and a main shielding cover. The main shielding cover is located between the upper and lower porcelain shells arranged at intervals, thus dividing the vacuum interrupter's cylinder into three sections. In addition, some vacuum interrupters have an integrated upper and lower ceramic shell structure, or an outer flange is installed on the main shield, with the outer flange clamped between the end faces of the upper and lower ceramic shells.

[0003] Currently, vacuum interrupters are mainly produced using either a single-stage sealing process or a fully single-stage sealing process. Both processes require manual assembly of the interrupter's components according to their corresponding relationships before transfer to a vacuum brazing furnace for degassing, baking, and brazing sealing. The difference lies in whether the welding of the entire interrupter tube is completed in one step or in multiple stages. Both single-stage and fully single-stage sealing processes are performed manually in a cleanroom. The main steps include the positioning and assembly of components such as the ceramic shell and metal shield, as well as the transfer to a vacuum furnace for brazing and shaping.

[0004] Since vacuum interrupters primarily rely on their internal vacuum environment for insulation and interruption functions, their performance is extremely sensitive to vacuum levels. Currently, among all failure types of interrupters, those caused by air leakage damaging the vacuum level account for the vast majority. Due to the unique nature of vacuum interrupters, once the brazing seal is completed, the internal vacuum level cannot be increased again through technical means. The insulation and interruption performance of the interrupter depends on its high internal vacuum; if the vacuum level falls below a certain point, its insulation and arc-extinguishing performance will significantly decrease or even be completely lost. Therefore, as a critical component for sealing the vacuum interrupter, the quality of the brazing weld is a key factor in ensuring its vacuum level, directly determining the product performance and service life of the vacuum interrupter.

[0005] The quality of the weld is closely related to the concentricity of the components that make up the arc-extinguishing chamber. During the design process of the arc-extinguishing chamber, due to considerations of compactness and miniaturization, as well as the need to control the intensity of the internal and external electric fields, the design dimensional margin of components such as the shield is small, and the radial dimension of the overlapping part of the axial adjacent components is very limited. When the components are eccentric due to assembly, the shape of the components themselves, etc., the weld will be wider on one side and narrower on the other. Under the action of the welding internal stress of the arc-extinguishing chamber and the working load during operation, the narrow side weld is extremely prone to weld tearing, which will cause the arc-extinguishing chamber to leak air and damage its breaking and insulation performance.

[0006] When assembling vacuum interrupters using existing sealing and assembling processes, sealing and assembling fixtures are often used to position the corresponding components on the vacuum interrupter. For example, the Chinese invention patent with authorization announcement number CN101673628B discloses a fixture for primary sealing and assembling of a vacuum interrupter, which uses one set of screws to press the moving cover plate, ceramic shell, and stationary cover plate axially along the vacuum interrupter, and another set of screws to press the moving conductive rod and stationary conductive rod. However, existing fixtures for sequential sealing and assembling mainly perform axial clamping of the vacuum interrupter, while the radial positioning of components such as the metallized ceramic shell and metal shielding cover is completed manually by visual inspection. Due to the influence of the operator's skill level, the assembly quality and consistency are not easy to guarantee, which increases the risk of subsequent weld leakage. Summary of the Invention

[0007] The purpose of this invention is to provide a vacuum interrupter sealing and alignment device to solve the problem that it is difficult to guarantee the radial positioning quality and consistency of various components during vacuum interrupter sealing and aligning in the prior art.

[0008] The vacuum interrupter sealing and alignment device in this invention adopts the following technical solution:

[0009] A vacuum interrupter sealing alignment device includes a device base with at least three positioning claw mounting seats distributed circumferentially on the device base. Each positioning claw mounting seat has a positioning claw extending towards the distribution center line of each positioning claw mounting seat. The positioning claw mounting seats are movably mounted on the device base in a direction perpendicular to the distribution center line. The device base is equipped with a synchronous drive mechanism for driving each positioning claw mounting seat to synchronously approach and simultaneously contact the outer circumferential surface of the corresponding component on the vacuum interrupter, so that the axis of the corresponding component is coaxial with the distribution center line. At least two positioning claws are provided in the vertical direction for positioning different components, or the positioning claws are adjustable in the vertical direction to position components at different heights.

[0010] The beneficial effect of the above technical solution is that by setting at least two positioning claws arranged in the vertical direction or positioning claws whose positions are adjustable in the vertical direction, and in conjunction with the synchronous drive mechanism on the device base, each positioning claw can be used to simultaneously contact the outer peripheral surface of the corresponding component on the vacuum interrupter, so that the axis of the corresponding component is coaxial with the distribution center line; compared with the existing technology that relies on manual positioning, it can ensure positioning accuracy and facilitate the assurance of radial positioning quality and consistency of each component.

[0011] As a further defined technical solution: the positioning claws on each positioning claw mounting base are raised and lowered synchronously through a synchronous lifting mechanism.

[0012] The beneficial effect of the above-mentioned further defined technical solution is that it facilitates the simultaneous alignment of a set of positioning claws with the corresponding parts, making operation convenient.

[0013] As a further defined technical solution: the synchronous lifting mechanism includes a lead screw for constituting the positioning claw mounting seat, a lifting seat is threadedly connected to the lead screw, the positioning claw is mounted on the lifting seat, and the positioning claw mounting seat is provided with a guide structure for guiding the lifting seat to assemble in the vertical direction; a synchronous transmission mechanism is provided between each lead screw for synchronous rotation of each lead screw.

[0014] The beneficial effect of the above-mentioned further defined technical solution is that the above mechanism can control the positioning claws of the same layer to move synchronously in the height direction, and the use of a lead screw structure can achieve stepless adjustment, and the structure is mature.

[0015] As a further defined technical solution: the synchronous transmission mechanism is a synchronous belt mechanism, including a synchronous belt and synchronous pulleys adapted to the synchronous belt and mounted on each lead screw.

[0016] The beneficial effects of the aforementioned further defined technical solution are that the synchronous belt mechanism has good synchronization performance, simple structure, and low cost.

[0017] As a further limiting technical solution: only one of the lead screws is connected to the drive mechanism.

[0018] The beneficial effects of the above-mentioned further defined technical solution are that it has a simple structure and facilitates the arrangement of the drive mechanism.

[0019] As a further defined technical solution: the synchronous drive mechanism includes a disc gear rotatably mounted on the device base and adapter teeth set at the bottom of each positioning claw mounting seat. The adapter teeth are adapted to the disc gear to realize the synchronous movement of each positioning claw mounting seat when the disc gear rotates.

[0020] The beneficial effect of the aforementioned further defined technical solution is that it can achieve stepless adjustment and self-locking, and is easy to adjust.

[0021] As a further defined technical solution: the device base is provided with a drive gear, and the disc gear is provided with drive teeth that mesh with the drive gear, and the drive gear is used to drive the disc gear to rotate.

[0022] The beneficial effect of the above-mentioned further defined technical solution is that the rotation of the disc gear is achieved by using a drive gear, the structure is relatively simple, and the transmission is reliable.

[0023] As a further defined technical solution: the positioning claw is adjustable in the direction toward the distribution center line; the positioning claw is fixed on the main vernier, the main vernier is guided and mounted on the main scale, and the main vernier and the main scale are set with scales according to the principle of misalignment and amplification, which are used to indicate the position of the main vernier in order to compensate for the error of the part to be positioned.

[0024] The beneficial effect of the aforementioned further defined technical solution is that it facilitates precise adjustment of the position of the positioning claw, which helps to improve positioning accuracy.

[0025] As a further defined technical solution: the positioning claw is fixedly connected to an auxiliary claw for positioning the corresponding component radially along the vacuum interrupter chamber, and the auxiliary claw is adjustablely positioned on the positioning claw in the up-down direction.

[0026] The beneficial effect of the above-mentioned further defined technical solution is that setting an auxiliary claw can simultaneously achieve the positioning of another component, which helps to simplify the structure.

[0027] As a further defined technical solution: the auxiliary claw is adjustable in position along the direction toward the distribution center line; the auxiliary claw is fixed on the secondary vernier, the secondary vernier is guided and mounted on the secondary scale, and the secondary vernier and the secondary scale are set with scales according to the principle of misalignment amplification, which are used to indicate the position of the secondary vernier to compensate for the error of the part to be positioned.

[0028] The beneficial effect of the aforementioned further defined technical solution is that it facilitates precise adjustment of the position of the auxiliary claw, which helps to improve positioning accuracy. Attached Figure Description

[0029] Figure 1 This is a perspective view of the vacuum interrupter sealing and aligning device of Embodiment 1 in this invention in its usage state;

[0030] Figure 2 yes Figure 1 Front view of the alignment device for the sealing and aligning of the medium vacuum interrupter;

[0031] Figure 3 yes Figure 1 Internal structure diagram of the base of the device;

[0032] Figure 4 This is a schematic diagram showing the assembly relationship between the device base and the lead screw;

[0033] Figure 5 yes Figure 1 A magnified view of a portion of point A in the middle.

[0034] The names of the components corresponding to the reference numerals in the figure are as follows: 10. Device base; 11. Base plate; 12. Cover plate; 13. Disc gear; 14. End face gear; 15. Guide groove; 16. Drive shaft; 17. Drive gear; 18. Bearing seat; 19. Rolling bearing; 21. Main lead screw; 22. Slider; 23. Main nut; 24. Main nut set screw; 25. Main scale; 26. Main vernier; 27. Main vernier set screw; 28. Secondary lead screw; 29. ​​Secondary vernier; 210. Secondary vernier set screw; 211. Positioning claw; 212. Auxiliary claw; 213. Secondary scale; 214. Secondary nut; 215. Main guide rod; 216. Secondary synchronous belt; 217. Secondary guide rod; 31. Synchronous belt; 32. Synchronous belt pulley; 33. Main drive belt; 34. Crank handle; 41. Ceramic shell; 42. Shielding cover. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0037] It should be noted that, in specific embodiments of the present invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the use of phrases such as "comprising a…" to define an element does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] In the description of this invention, unless otherwise explicitly specified and limited, the term "provided with" should be interpreted broadly. For example, the object "provided with" can be a part of the body, or it can be separately arranged from the body and connected to the body. This connection can be a detachable connection or a non-detachable connection. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0040] The present invention will be further described in detail below with reference to embodiments.

[0041] Example 1 of the vacuum interrupter sealing alignment device of the present invention:

[0042] like Figure 1 and Figure 2 As shown, the vacuum interrupter sealing and aligning device includes a circular device base 10, three main lead screws 21 evenly distributed around the axis of the device base 10, and positioning claws 211 whose positions are adjustable along the vertical direction on the main lead screws 21.

[0043] like Figure 3The device base 10 includes a base plate 11 and a cover plate 12. The base plate 11 is a circular plate used to support the entire device; the cover plate 12 is in the shape of a cover and is fastened downward to the base plate 11 by bolts. A disc gear 13 is rotatably mounted on the top of the inner cavity of the cover plate 12. The structure of the disc gear 13 is prior art, and its top surface is provided with spirally wound end face teeth 14. The top end face of the cover plate 12 is provided with three guide grooves 15 extending radially along the device base 10 for guiding the slider 22 connected to the bottom of the main lead screw 21. The main lead screw 21 and the slider 22 together constitute a positioning claw mounting seat for mounting the positioning claw 211. The bottom surface of the slider 22 is provided with adapter teeth, which are adapted to the disc gear 13 to realize the synchronous movement of each positioning claw mounting seat when the disc gear 13 rotates. The slider 22 with adapting teeth and the disc gear 13 constitute the above-mentioned synchronous drive mechanism, so as to realize the synchronous movement of each positioning claw mounting seat when the disc gear 13 rotates.

[0044] like Figure 1 , Figure 3 A drive shaft 16 is rotatably mounted in the inner cavity of the cover plate 12 via a bearing seat 18. A bevel gear 17 is mounted on the drive shaft 16, meshing with the drive teeth at the bottom of the disc gear 13. The bearing seat 18 is fixedly connected to the base plate 11 and has three locations evenly distributed circumferentially. A rolling bearing 19 is mounted on the bearing seat 18 to support the rotation of the drive shaft 16. The outer end of the drive shaft 16 extends radially outward from the cover plate 12, and a square hole is provided on the outer end face for connecting operating tools to drive the drive shaft 16 to rotate, ultimately achieving the radial movement of the slider 22 and the main lead screw 21.

[0045] like Figure 1 , Figure 4 and Figure 5A main nut 23 is rotatably mounted on the lead screw. A main nut set screw 24 is located at the tail end of the main nut 23, used to fix the main nut 23 in a suitable position on the main lead screw 21. This allows the positioning claw 211 to be adjusted vertically, enabling the positioning of components at different heights on the vacuum interrupter. A main scale 25 is fixed to the main nut 23. A main vernier 26, movable along its length, is mounted on the main scale 25. A main vernier set screw 27 is located on the side of the main vernier 26 to fix it to the main scale 25. A replaceable jaw is mounted at the front end of the main vernier 26, forming the positioning claw 211. The main vernier 26 and the main scale 25 are graduated according to the principle of misaligned amplification, forming a vernier caliper structure used to indicate the positions of the main vernier 26 and the positioning claw 211. The misaligned amplification principle is existing technology, and the vernier caliper is manufactured based on this principle. The positioning claws 211 extend towards the distribution center line of each positioning claw mounting seat, and are used to simultaneously contact the outer peripheral surface of the corresponding components on the vacuum interrupter, so that the axis of the corresponding component is coaxial with the distribution center line, which is the axis of the device base 10. The main scale 25 constitutes a lifting seat for mounting the positioning claws 211, and the slider 22 is provided with a guide rod extending in the vertical direction for guiding the assembly of the lifting seat formed by the main scale 25. The top end of the main guide rod 215 is connected to the top end of the main lead screw 21 through a connecting plate, which can improve the structural stability of the main guide rod 215 and the main lead screw 21.

[0046] like Figure 1 , Figure 4 and Figure 5 The main vernier 26 has a mounting hole at its tail end. The top end of the auxiliary lead screw 28 is rotatably fitted into the mounting hole and suspended from the tail end of the main vernier 26. A matching auxiliary nut 214 is mounted on the auxiliary lead screw 28. The tail end of the auxiliary nut 214 has an auxiliary nut set screw for fixing the auxiliary nut 214 to a suitable position on the auxiliary lead screw 28. A secondary scale 213 is mounted on the auxiliary nut 214. A secondary vernier 29 is mounted on the secondary scale 213. A secondary vernier set screw 210 for fixing the secondary vernier 29 to the secondary scale 213 is provided on the side of the secondary vernier 29. A replaceable claw is also mounted on the front end of the secondary vernier 29, forming an auxiliary claw 212. The main vernier 26 also has a secondary guide rod 217 extending in the vertical direction for guiding the secondary scale 213 in the vertical direction during assembly. Each auxiliary lead screw 28 has a synchronous pulley at its lower end, around which a corresponding auxiliary synchronous belt 216 is wound to achieve synchronous rotation of each auxiliary lead screw 28, thereby achieving synchronous lifting and lowering of each auxiliary claw 212. To simplify the structure, the auxiliary synchronous belt 216 is driven directly by hand. In other embodiments, each auxiliary claw 213 can also achieve independent lifting and lowering by rotating the corresponding auxiliary lead screw 28.

[0047] The main vernier 26 and main scale 25 are equipped with graduations based on the principle of misalignment amplification. These graduations indicate the positions of the main vernier 26 and positioning claws 211 to compensate for errors in the components to be positioned. The reason is as follows: During the machining of components such as the ceramic shell and shield of the vacuum interrupter, there will be certain machining errors in roundness. For example, the required dimension of a component is φ100, but in actual machining, the measured value in one direction may be φ99.8, and the measured value in another direction may be φ100.3. These errors can be obtained through the component quality inspection process before assembly. The positioning of this alignment device during assembly is based on the outer surface of the component, not the theoretical center axis. Machining errors on the component surface cause the actual center axis of the machined component to not coincide with the theoretical center axis. Positioning and assembly based on the surface will lead to assembly position deviations. Therefore, it is necessary to first adjust the position of the positioning claws 211 on the main scale 25 to compensate for the machining errors of the component, ensuring that its theoretical axis coincides with the actual axis before assembly. This effectively guarantees its alignment. Since machining errors are generally small, a differential amplification device is required for accurate and effective compensation. The function of the graduations on the vernier scale 213 is the same as here, and will not be repeated. The auxiliary claw 212 also extends toward the distribution center line of each positioning claw mounting seat, and is used to simultaneously contact the outer peripheral surface of the corresponding component on the vacuum interrupter, so that the axis of the corresponding component is coaxial with the distribution center line, which is the axis of the device base 10. The auxiliary guide rod 217 at the bottom of the main vernier 26 can realize the up and down movement of the auxiliary vernier 29 and the auxiliary claw 212 when the auxiliary lead screw 28 rotates.

[0048] like Figure 4 Each lead screw is equipped with a synchronous pulley 32 at its top. The vacuum interrupter sealing alignment device also includes a synchronous belt 31 wound around each synchronous pulley 32, forming a synchronous belt mechanism to drive each lead screw to rotate synchronously, thereby achieving synchronous lifting and lowering of each positioning claw 211 and auxiliary claw 212. The bottom of one of the main lead screws 21 is connected to a main drive pulley, which is connected to the crank handle 34 via a main drive belt 33 in the form of a synchronous belt.

[0049] During alignment, the positioning claw 211 mounted on the main vernier 26 is used to fit against the outer wall surface of the ceramic shell 41, and the auxiliary claw 212 mounted on the front end of the secondary vernier 29 is used to fit against the shielding cover 42. Through two-stage misalignment amplification between the main scale 25 and the main vernier 26, and between the secondary scale 213 and the secondary vernier 29, micron-level correction of the assembly accuracy between the ceramic shell 41 and the shielding cover 42 is finally achieved. The claw shape of the positioning claw 211 and the auxiliary claw 212 is set according to the common ceramic shell 41 and shielding cover 42 size series on the market, and can be replaced according to the object to be assembled to better fit and clamp the corresponding parts. In this embodiment, each lead screw is provided with two positioning claws 211, one at the top and one at the bottom, for positioning one ceramic shell 41 and one shielding cover 42 respectively. The positioning claws are modularly designed, and the number of layers can be added or removed at any time according to actual needs. The two layers in the figure are only for illustration and are not limited to two layers.

[0050] Embodiment 2 of the vacuum interrupter sealing alignment device of the present invention:

[0051] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, each lead screw is provided with two positioning claws 211, one above the other. In this embodiment, each lead screw is provided with one positioning claw 211. When a certain component is adjusted, the positioning claw 211 on each lead screw is driven to rise and fall to correspond to another component, thereby achieving the positioning of other components.

[0052] Embodiment 3 of the vacuum interrupter sealing alignment device of the present invention:

[0053] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, each positioning claw 211 moves up and down synchronously via a synchronous lifting mechanism, which is a lead screw and nut mechanism. In this embodiment, however, the synchronous lifting mechanism is an electric push rod with its extension and retraction direction arranged vertically.

[0054] Embodiment 4 of the vacuum interrupter sealing alignment device of the present invention:

[0055] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the position of the positioning claw 211 is adjustable along the direction towards the distribution center line. In this embodiment, however, the positioning claw 211 is fixed to the positioning claw mounting base. Additionally, in other embodiments, the auxiliary claw 212 may also be fixedly disposed relative to the positioning claw 211.

[0056] Embodiment 5 of the vacuum interrupter sealing alignment device of the present invention:

[0057] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, an auxiliary claw 212 is fixedly connected to the positioning claw 211. In this embodiment, however, the radial positioning of the corresponding components of the vacuum interrupter is achieved solely through the positioning claw 211.

[0058] Embodiment 6 of the vacuum interrupter sealing alignment device of the present invention:

[0059] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, each main lead screw 21 rotates synchronously via a timing belt 31. In this embodiment, however, each main lead screw 21 rotates synchronously via a gear structure mounted on the device base 10.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A device for aligning the sealing plane of a vacuum interrupter, characterized in that The device includes a base (10), which includes a base plate (11) and a cover plate (12). At least three positioning claw mounting seats are distributed circumferentially on the device base. The positioning claw mounting seats are composed of a slider (22) and a main screw (21). The bottom of the main screw is connected to the slider. A disc gear (13) is rotatably mounted on the top of the inner cavity of the cover plate. The top surface of the disc gear is provided with spirally coiled end face teeth (14). The top end face of the cover plate is provided with a radially extending guide groove (15) that guides and cooperates with the slider. The bottom surface of the slider is provided with an adapter tooth that adapts to the disc gear to realize the synchronous radial movement of each positioning claw mounting seat when the disc gear rotates. The main screw is threaded. The transmission connection includes a lifting seat, on which are provided positioning claws (211) extending toward the distribution center line of each main screw. The positioning claw mounting seat is provided with a guide structure for guiding the lifting seat in the vertical direction. Each positioning claw is on the same plane and its position is adjustable in the direction toward the distribution center line. A synchronous transmission mechanism is provided between each main screw for synchronous rotation of each main screw, so that each positioning claw rises and falls synchronously. The slider and the disc gear constitute a synchronous drive mechanism, which is used to drive each positioning claw mounting seat to synchronously approach each other so as to contact and clamp the corresponding component on the outer peripheral surface of the corresponding component on the vacuum interrupter at the same time, so that the axis of the corresponding component is coaxial with the distribution center line before assembling the corresponding component.

2. The vacuum interrupter stack alignment device of claim 1, wherein, The positioning claw (211) is fixed on the main vernier (26), and the main vernier (26) is guided and assembled on the main scale (25). The main vernier (26) and the main scale (25) are set with scales according to the principle of misalignment and amplification, which are used to indicate the position of the main vernier (26) to compensate for the error of the parts to be positioned.

3. The vacuum interrupter chamber sealing and alignment device according to claim 2, characterized in that, The main vernier is provided with a main vernier set screw (27) on the side for fixing the main vernier to the main scale.

4. The vacuum interrupter stack alignment device of claim 1, wherein, The positioning claw (211) is fixedly connected to an auxiliary claw (212) for positioning the corresponding component radially along the vacuum interrupter. The auxiliary claw (212) is adjustable in position along the vertical direction on the positioning claw (211).

5. The vacuum interrupter stack alignment device of claim 2, wherein, The main vernier has a mounting hole at its tail end, in which a secondary lead screw (28) is installed. The top end of the secondary lead screw is rotatably mounted in the mounting hole and suspended at the tail end of the main vernier. A matching secondary nut (214) is installed on the secondary lead screw, and a secondary scale (213) is installed on the secondary nut. A secondary vernier (29) is set on the secondary scale. An auxiliary claw (212) is installed at the front end of the secondary vernier. The secondary vernier and the secondary scale are set with scales according to the principle of misalignment amplification, which are used to indicate the position of the secondary vernier to compensate for the error of the parts to be positioned.

6. The vacuum interrupter stack alignment device of claim 5, wherein, The side of the secondary vernier is provided with a secondary vernier set screw (210) for fixing the secondary vernier to the secondary scale.

7. The vacuum interrupter stack alignment device of claim 5, wherein, Each auxiliary screw is provided with a synchronous pulley at its lower end, around which the corresponding auxiliary synchronous belt (216) is wound to achieve synchronous rotation of each auxiliary screw, thereby achieving synchronous lifting and lowering of each auxiliary claw.

8. The device according to claim 4 or 5, characterized in that The auxiliary claw (212) is adjustable in position along the direction toward the distribution center line.

9. The device of claim 1, wherein, The synchronous transmission mechanism is a synchronous belt mechanism, including a synchronous belt (31) and synchronous pulleys (32) adapted to the synchronous belt (31) on each main screw.

10. The vacuum interrupter stack alignment device of claim 1, wherein, Only one of the lead screws is connected to the drive mechanism.

11. The vacuum interrupter stack alignment device of claim 1, wherein, The device base (10) is provided with a drive gear (17), and the disc gear (13) is provided with drive teeth that mesh with the drive gear (17). The drive gear (17) is used to drive the disc gear (13) to rotate.

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