Positioning tool for assembling vacuum arc-extinguishing chamber

Abstract

The invention discloses a positioning tool for assembling a vacuum arc-extinguishing chamber, which comprises a base, at least three positioning assemblies and a positioning transmission assembly, a positioning part is formed on the base, the positioning assemblies are circumferentially arranged on the periphery of the positioning part, and each positioning assembly can approach the positioning part to clamp the vacuum arc-extinguishing chamber, so that the positioning transmission assembly can be used for positioning the vacuum arc-extinguishing chamber. Or each positioning assembly can move in the direction away from the positioning part to loosen the vacuum arc-extinguishing chamber, the multiple positioning assemblies and the base define a containing space capable of containing the vacuum arc-extinguishing chamber, the positioning assemblies can make contact with the periphery of the vacuum arc-extinguishing chamber to adjust the coaxiality of the vacuum arc-extinguishing chamber, the positioning transmission assembly is connected with the base, and the positioning transmission assembly is connected with the base. And the positioning transmission assembly is arranged below the positioning part, is coaxial with the positioning part, is in transmission connection with the positioning assembly, and can drive the positioning assembly to move in the radial direction of the positioning part, so that the plurality of positioning assemblies can limit the radial direction of the vacuum arc-extinguishing chamber, and the assembly efficiency of the vacuum arc-extinguishing chamber is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electrical switch equipment assembly, and in particular to a positioning tool for vacuum interrupter assembly. Background Art

[0002] The vacuum interrupter is mainly composed of the outer shell, the upper sealing ring, the lower sealing ring, and the dynamic and static conductive rods. The vacuum interrupter has high requirements for coaxiality during assembly. If the coaxiality of the product is poor, the thickness of the rubber layer will be uneven during the rubber coating, affecting the insulation performance of the product. At present, the assembly of the vacuum interrupter generally relies on the self-positioning of the parts or the experience of the assembler to achieve centering. The assembly accuracy is poor, and it is highly dependent on the assembler, and the assembly efficiency is low.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a positioning tool for assembling a vacuum arc chamber, aiming to improve the assembly efficiency of the vacuum arc chamber.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] On the one hand, the present application discloses a positioning tool for assembling a vacuum interrupter, comprising:

[0007] A base formed with a positioning portion;

[0008] At least three positioning assemblies are provided, at least three positioning assemblies are provided on the base and circumferentially distributed on the periphery of the positioning portion, the positioning assemblies can approach the positioning portion to clamp the vacuum arc chamber, or the positioning assemblies can move in a direction away from the positioning portion to release the vacuum arc chamber, a plurality of the positioning assemblies and the base are enclosed to form an accommodating space for placing the vacuum arc chamber, and the positioning assemblies can respectively contact the upper and lower parts of the periphery of the vacuum arc chamber to adjust the coaxiality of the vacuum arc chamber;

[0009] The positioning transmission assembly is connected to the base, disposed below the positioning portion, coaxial with the positioning portion, and is transmission-connected to the positioning assembly. The positioning transmission assembly can rotate axially to drive the positioning assembly to move radially along the positioning portion.

[0010] In some embodiments of the present application, the positioning transmission assembly includes:

[0011] A central axis connected to the base and coaxially arranged with the positioning portion;

[0012] A plurality of transmission rods are provided, connected to the positioning components one by one, a first end of the transmission rod is rotatably connected to the central axis, and a second end of the transmission rod is rotatably connected to the positioning component;

[0013] A guide structure is formed on the base and can limit the circumferential movement of the positioning assembly along the central axis.

[0014] In some embodiments of the present application, a plurality of mounting grooves are provided on the base, the plurality of mounting grooves are evenly distributed circumferentially on the outer circumference of the positioning portion, and the mounting grooves extend radially along the positioning portion to form the guide structure, the positioning components are arranged one by one in the mounting grooves, and the positioning components can move along the extension direction of the mounting grooves.

[0015] In some embodiments of the present application, the positioning component includes:

[0016] An indexing slider is disposed in the mounting groove and is movable along the extending direction of the mounting groove, and the indexing slider is rotatably connected to the second end of the transmission rod;

[0017] A positioning rod connected to the indexing slider and extending away from the base, wherein the extending direction of the positioning rod is the same as the extending direction of the central axis;

[0018] There are at least two adjusting members, at least two of which are spaced apart on the positioning rod, at least one of which can contact the lower portion of the vacuum arc chamber, and at least one of which can contact the upper portion of the vacuum arc chamber, and the adjusting members are vertically connected to the positioning rod and extend toward the accommodating space.

[0019] In some embodiments of the present application, a slot is provided on a side of the indexing slider facing the central axis, and the second end of the transmission rod is provided in the slot and is rotatably connected to the indexing slider.

[0020] In some embodiments of the present application, a radially extending mounting hole is provided on the positioning rod, and the adjusting member is connected to the mounting hole via a connecting member.

[0021] In some embodiments of the present application, a through hole is provided at the connecting end of the adjusting member, the through hole extends along the axial direction of the positioning rod, the positioning rod is penetrated through the through hole and adapted to the through hole.

[0022] In some embodiments of the present application, the positioning transmission assembly further includes:

[0023] The swing arm is connected to the central axis and extends radially along the central axis to the outside of the base, and can drive the central axis to rotate to adjust the distance between the positioning assembly and the central axis.

[0024] In some embodiments of the present application, the base includes:

[0025] A seat body, wherein a mounting cavity is formed on the seat body, and the positioning transmission assembly is arranged in the mounting cavity;

[0026] The positioning block is arranged above the installation cavity, and the positioning portion is formed on the upper surface of the positioning block.

[0027] In some embodiments of the present application, a through groove is provided on the seat body, and the through groove extends radially along the central axis to connect the installation cavity with the outer side of the seat body. The swing arm is passed through the through groove and can move along the width direction of the through groove to drive the central axis to rotate. The groove body of the through groove is arranged as a stepped surface undulating along its width direction.

[0028] Beneficial effects:

[0029] The positioning tool for assembling a vacuum arc chamber provided in the present application positions the end of the vacuum arc chamber by providing an upwardly protruding positioning portion on a base, and by providing at least three circumferentially distributed positioning components on the periphery of the positioning portion, and controlling the radial distance between the positioning component and the positioning portion through a positioning transmission component, so that the positioning component can contact the vacuum arc chamber, thereby achieving adjustment of the coaxiality of the vacuum arc chamber, reducing the difficulty of adjusting the coaxiality of the vacuum arc chamber when assembling the vacuum arc chamber, and can improve the accuracy of the coaxiality of the vacuum arc chamber; the positioning tool has a simple structure and is easy to operate, and can effectively improve the assembly efficiency of the vacuum arc chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the use status of a positioning tool for assembling a vacuum arc chamber provided in one embodiment of the present application.

[0031] Figure 2 A schematic structural diagram of a positioning tool for assembling a vacuum arc chamber provided in one embodiment of the present application.

[0032] Figure 3 A schematic diagram of the connection structure of a positioning assembly and a positioning transmission assembly provided in one embodiment of the present application.

[0033] Figure 4 A schematic diagram of the connection structure of a positioning assembly and a positioning transmission assembly provided in another embodiment of the present application.

[0034] Figure 5A schematic diagram of the connection structure of a positioning assembly and a positioning transmission assembly provided in yet another embodiment of the present application.

[0035] Explanation of the main component symbols: 1. Base; 11. Base body; 111. Mounting groove; 112. Mounting cavity; 113. Through groove; 12. Positioning block; 121. Positioning part; 2. Positioning assembly; 21. Indexing slider; 211. Slot; 22. Positioning rod; 23 / 23a / 23b / 23c, adjusting part; 3. Positioning transmission assembly; 31. Center axis; 32. Transmission rod; 33. Swing arm; 200. Vacuum arc extinguishing chamber. DETAILED DESCRIPTION

[0036] The present application provides a positioning tool for assembling a vacuum interrupter. In order to make the purpose, technical solution and effect of the present application clearer and more specific, the present application is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0037] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, and a specific orientation structure and operation, and therefore, cannot be understood as a limitation on the present application. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] The vacuum interrupter is a key component in the power switch, generally including the outer shell, upper sealing ring, lower sealing ring, moving end conductive rod, static end conductive rod and moving and static contacts. In order to ensure the creepage distance, an insulating layer needs to be set on the outside of the vacuum interrupter through the encapsulation process after the vacuum interrupter is assembled. The outer shell of the vacuum interrupter includes glass and ceramic materials. The vacuum interrupter with a ceramic shell is suitable for use in environments with higher voltages. When assembling the vacuum interrupter with double ceramic shells, it is necessary to align the two axially assembled ceramic shells to avoid the poor coaxiality of the two ceramic shells, which will cause uneven thickness of the glue layer when gluing, thereby affecting the insulation performance of the vacuum interrupter.

[0040] See also Figure 1 and 2 The present application provides a positioning tool for vacuum interrupter assembly, which can be used to adjust the coaxiality of the vacuum interrupter with double shells axially connected when assembling the double-ceramic shell vacuum interrupter, thereby improving the assembly effect and product stability of the vacuum interrupter. The positioning tool includes a base 1, a positioning assembly 2 and a positioning transmission assembly 3;

[0041] A positioning portion 121 protruding upward is formed on the upper surface of the base 1, and at least three positioning components 2 are provided. At least three positioning components 2 are arranged on the base 1 and are circumferentially distributed on the outer periphery of the positioning portion 121. The positioning components 2 can approach the positioning portion to clamp the vacuum arc chamber 200, or the positioning components 2 can move in a direction away from the positioning portion 121 to release the vacuum arc chamber 200; specifically, the distance between each positioning component 2 and the positioning portion 121 is equal, or the distance between each positioning component 2 and the positioning portion 121 is approximately the same, and the difference in distance is within a certain allowable error range. The positioning components 2 are arranged on the same circle, and the multiple positioning components 2 and the base 1 are enclosed to form a storage space for placing the vacuum arc chamber 200. The positioning components 2 can respectively contact the outer periphery of the vacuum arc chamber 200, specifically, the positioning components 2 can respectively contact the upper shell and the lower shell of the vacuum arc chamber 200 to adjust the coaxiality of the vacuum arc chamber 200; the positioning transmission component 3 is connected to the base 1, and is arranged below the positioning portion 121, coaxial with the positioning portion 121, and the positioning transmission component 3 is transmission-connected to the positioning component 2, and the positioning transmission component 3 can rotate axially to drive the positioning component 2 to move radially along the positioning portion 121, close to or away from the central axis 31, thereby forming a storage space with different radial lengths. In the above-mentioned positioning fixture, the positioning part 121 adopts a positioning pin, and the positioning part 121 can penetrate into the lower part of the vacuum arc chamber 200 to position the lower part of the vacuum arc chamber 200, and then adjust the distance between the positioning component 2 and the positioning part 121 by rotating the positioning transmission component 3, so that the free end of the positioning component 2 abuts against the peripheral surface of the outer shell of the vacuum arc chamber 200, and the vacuum arc chamber 200 is confined in the cylindrical space enclosed by the positioning component 2 and the base 1, thereby realizing the coaxial assembly of the upper shell and the lower shell of the vacuum arc chamber 200, with accurate positioning and easy implementation, which can effectively improve the assembly efficiency of the vacuum arc chamber 200. It can be understood that the positioning component 2 can abut against the upper shell and the lower shell of the vacuum arc chamber 200 respectively.

[0042] The contact between the positioning component 2 and the vacuum interrupter 200 can be one or more of the contact forms such as point contact, line contact or surface contact. For example, when point contact is adopted, the surface of the positioning component 2 in contact with the vacuum interrupter 200 is set as a convex hemispherical surface, and the vertex of the hemispherical surface is in contact with the cylindrical surface of the outer periphery of the vacuum interrupter 200. For another example, when surface contact is adopted, the surface of the positioning component 2 in contact with the vacuum interrupter 200 is set as a concave surface, and the curvature of the concave surface is equivalent to the curvature of the outer peripheral surface of the vacuum interrupter 200. Then, the positioning component 2 can achieve surface contact with the vacuum interrupter 200 through the concave surface, thereby improving the contact stability of positioning.

[0043] like Figure 2 and 3As shown, the positioning transmission assembly 3 includes a central axis 31 and a transmission rod 32; the central axis 31 is connected to the base 1 and is coaxially arranged with the positioning portion 121; a plurality of transmission rods 32 are configured, which are connected to the positioning assembly 2 one by one, and the first end of the transmission rod 32 is rotationally connected to the central axis 31, and the second end of the transmission rod 32 is rotationally connected to the positioning assembly 2. A guide structure is formed on the base 1, and the guide structure can limit the circumferential movement of the positioning assembly 2 along the central axis 31, so that the positioning assembly 2 can only move in the direction close to or away from the central axis 31. Specifically, a positioning ring is sleeved and fixed on the central axis 31, and the transmission rod 32 is axially rotationally connected to the positioning ring through fasteners such as pins; in this way, when the central axis 31 rotates, it can drive the transmission rod 32 to rotate around the fastener, so that the transmission rod 32 is deflected, thereby changing the distance between the central axis 31 and the positioning assembly 2.

[0044] like Figure 2 As shown, a plurality of mounting grooves 111 are provided on the base 1, and the plurality of mounting grooves 111 are evenly distributed on the outer periphery of the positioning portion 121 in the circumferential direction, and the mounting grooves 111 extend radially along the positioning portion 121 to form a guiding structure for guiding the positioning component 2 to move radially along the central axis 31; the positioning components 2 are arranged one by one in the mounting grooves 111, and extend upward to form a structure capable of positioning the vacuum arc chamber 200, and the positioning components 2 can move along the extension direction of the mounting grooves 111 to realize the change of the radial length of the space enclosed by the plurality of positioning components 2 to position the vacuum arc chamber 200 radially.

[0045] like Figures 3 to 5 As shown, the positioning assembly 2 includes a dividing slider 21, a positioning rod 22 and an adjusting member 23; the dividing slider 21 is arranged in the mounting groove 111 and can move along the extension direction of the mounting groove 111, and the dividing slider 21 is rotatably connected to the second end of the transmission rod 32; so that when the central axis 31 rotates, the transmission rod 32 can deflect, driving the dividing slider 21 to approach or move away from the central axis 31. The positioning rod 22 is connected to the dividing slider 21 and extends upward away from the base 1. The extension direction of the positioning rod 22 is the same as the extension direction of the central axis 31, ensuring that the radial length of the circumference enclosed by each point of the positioning rod 22 in the height direction is consistent, and the line connecting the centers of each circle is coaxial with the positioning portion 121, ensuring the coaxiality of the assembly of the vacuum interrupter 200. There are at least two adjusting members 23, at least two adjusting members 23 are spaced apart on the positioning rod 22, at least one adjusting member 23 can contact the lower part of the vacuum arc chamber 200, and at least one adjusting member 23 can contact the upper part of the vacuum arc chamber 200, the adjusting member 23 is vertically connected to the positioning rod 22, and extends toward the accommodating space; it is ensured that the upper shell and the lower shell of the vacuum arc chamber 200 can both contact the adjusting member 23, so as to be coaxially connected under the action of the adjusting member 23.

[0046] When the above-mentioned positioning tool is used, the center axis 31 is first rotated to make the dividing slider 21 move in the direction away from the center axis 31, and the bottom of the vacuum arc chamber 200 is positioned on the positioning portion 121 on the base 1, and the various components of the vacuum arc chamber 200 are assembled; then the center axis 31 is rotated in the opposite direction to make the dividing slider 21 approach the center axis 31, and the dividing slider 21 drives the positioning rod 22 and the adjusting member 23 to approach the center axis 31, and the accommodating space enclosed by the multiple positioning components 2 becomes smaller until the free end of the adjusting member 23 abuts against the outer peripheral surface of the vacuum arc chamber 200, thereby completing the coaxiality adjustment of the vacuum arc chamber 200, and the assembly efficiency is high.

[0047] In this embodiment, three groups of positioning components 2 are provided, which are evenly distributed in the same circumferential direction, and two groups of adjusting members 23 are provided on each positioning rod 22, and the adjusting members 23 on each positioning rod 22 are provided correspondingly, wherein one group of adjusting members 23 is at a first horizontal height to limit the lower shell of the vacuum interrupter 200, and the other group of adjusting members 23 is at a second horizontal height to limit the upper shell of the vacuum interrupter 200. In this way, the three groups of positioning components 2 can radially adjust the vacuum interrupter 200 in three horizontal directions and two height directions, so that the axes of the upper shell and the lower shell of the vacuum interrupter 200 can be in the same straight line, thereby improving the coaxiality of the vacuum interrupter 200.

[0048] like Figures 3 to 5 As shown, a slot 211 is provided on one side of the indexing slider 21 facing the central axis 31, and the second end of the transmission rod 32 is provided in the slot 211, and is rotatably connected to the indexing slider 21 through a pin. The slot wall of the slot 211 can limit the longitudinal displacement of the transmission rod 32, and a larger contact area is provided between the rotating rod and the indexing slider 21, thereby improving the transmission stability of the transmission rod 32, thereby improving the accuracy of the positioning tooling.

[0049] like Figures 2 to 4 As shown, the positioning rod 22 is provided with a radially extending mounting hole, and the adjusting member 23 is connected to the mounting hole through a connecting member, so that the adjusting member 23 is connected to the radial direction of the positioning rod 22, ensuring that the adjusting members 23 on different positioning rods 22 enclose a radial plane perpendicular to the positioning portion 121, thereby ensuring the accuracy of the coaxiality adjustment of the positioning fixture. In one embodiment, the positioning rod 22 and the connecting member are connected by a positioning pin, which has a simple structure and high connection accuracy, and can improve the accuracy of the coaxiality adjustment of the positioning fixture to a certain extent.

[0050] In one embodiment, if Figure 3As shown, the adjusting member 23a includes a connecting portion and an adjusting portion, the connecting portion is set to a cylindrical ring, the adjusting portion is connected to the outer peripheral surface of the cylindrical ring facing the central axis 31, the adjusting portion is set to a cylindrical shape, and the end of the adjusting portion is set to a hemispherical surface protruding outward, and the coaxiality adjustment is completed by the hemispherical surface contacting the peripheral surface of the vacuum interrupter 200. The surface of the adjusting member 23a has a smooth transition, which can reduce the damage to the product caused by accidental collisions during the assembly process, and the force is more balanced.

[0051] In another embodiment, if Figure 4 As shown, the adjusting member 23b includes a connecting portion and an adjusting portion. The connecting portion is configured as a cylindrical ring, the adjusting portion is configured as a long strip, and the end of the adjusting portion is configured as an arc surface protruding outward, which can increase the contact area between the adjusting member 23b and the vacuum arc chamber 200 and improve the contact stability between the two, thereby improving the stability of the movement of the upper shell and the lower shell when the coaxiality of the vacuum arc chamber 200 is adjusted.

[0052] In another embodiment, if Figure 5 As shown, the adjusting member 23c is arranged in a strip shape, and a through hole connected to the positioning rod 22 is arranged at its connecting end, and the end face which can contact with the vacuum arc chamber is arranged as an inwardly concave arc surface, and the curvature of the arc surface is arranged to be consistent with the curvature of the outer shell of the vacuum arc chamber 200, so that the arc surface can fit with the outer peripheral surface of the vacuum arc chamber 200, and the two are abutted in a surface contact manner. Compared with the point contact and line contact methods, the connection stability between the adjusting member 23c and the vacuum arc chamber 200 is greatly improved, thereby reducing the difficulty of assembling the vacuum arc chamber 200 and improving the assembly efficiency.

[0053] like Figures 2 to 4 As shown, a through hole is provided at the connecting end of the adjusting member 23, and the through hole extends along the axial direction of the positioning rod 22. The positioning rod 22 is inserted into the through hole and adapted to the through hole, thereby increasing the connection area between the adjusting member 23 and the positioning rod 22 and ensuring the connection stability between the positioning rod 22 and the adjusting member 23.

[0054] like Figures 2 to 5 As shown, the positioning transmission assembly 3 further includes a swing arm 33, which is connected to the central shaft 31 and extends to the outside of the base 1 along the radial direction of the central shaft 31, and can drive the central shaft 31 to rotate to adjust the distance between the positioning assembly 2 and the central shaft 31. By rotating the swing arm 33 along the axial direction of the central shaft 31, the central shaft 31 is driven to rotate, thereby improving the convenience of the positioning tooling operation.

[0055] like Figure 2As shown, the base 1 includes a base body 11 and a positioning block 12; an installation cavity 112 is formed on the base body 11, and the positioning transmission assembly 3 is arranged in the installation cavity 112; the installation groove 111 is connected with the installation cavity 112 and the outer side of the base body 11, so as to reduce the interference of the base body 11 on the rotation of the transmission rod 32, and facilitate the assembly of the dividing slider 21 into the installation groove 111, and increase the movable distance of the dividing slider 21 on the radial length of the center axis 31, so that the positioning tool can be suitable for the positioning and centering of the vacuum arc chamber 200 with a wider radial length range, thereby improving the applicability of the positioning tool.

[0056] The positioning block 12 is disposed above the mounting cavity 112, the edge of the positioning block 12 is connected to the base 11, and the positioning portion 121 is disposed on the upper surface of the positioning block 12. When the vacuum interrupter 200 is positioned and assembled, the positioning block 12 can contact the bottom of the vacuum interrupter 200 to support the bottom of the vacuum interrupter 200, thereby improving the stability of the vacuum interrupter 200 during assembly to a certain extent.

[0057] like Figure 2 As shown, a through slot 113 is provided on the seat body 11, and the through slot 113 extends radially along the central axis 31, connecting the mounting cavity 112 and the outer side of the seat body 11. The swing arm 33 is inserted in the through slot 113 and can move along the width direction of the through slot 113 to drive the central axis 31 to rotate. The bottom of the through slot 113 is stepped along its width direction. The height difference of the stepped surface at the bottom of the through slot 113 can limit the swing arm 33. In this embodiment, when the swing arm 33 rotates clockwise and is clamped on the stepped surface at the bottom of the through slot 113, the positioning assembly 2 is in an open state relatively away from the central axis 31. At this time, the various components of the vacuum interrupter 200 can be assembled. After the assembly is completed, the swing arm 33 is turned counterclockwise so that the swing arm 33 is no longer restricted by the stepped surface, and the indexing slider 21 is driven to move toward the direction close to the central axis 31, so as to achieve the coaxial adjustment of the adjusting member 23 to the porcelain shell and other parts.

[0058] In summary, the present application positions the center of the bottom of the vacuum interrupter 200 by arranging the positioning portion 121 on the base 1, and drives at least three positioning components 2 arranged on the periphery of the positioning portion 121 to move closer to or away from the positioning portion 121 through the positioning transmission component 3, so as to adjust the coaxiality of the vacuum interrupter 200. The structure is simple, easy to implement, and can effectively improve the assembly efficiency of the vacuum interrupter 200.

[0059] In addition, the central axis 31 of the positioning transmission assembly 3 is driven to rotate by the swing arm 33, and then the positioning assembly 2 is driven to move, thereby improving the convenience of using the positioning tool; a through groove 113 suitable for the swing arm 33 to pass through is provided on the base 1, and the groove bottom of the through groove 113 is provided as a stepped surface, so that the stepped surface can position the swing arm 33, and position the positioning assembly 2 in an open state away from the central axis 31, which is convenient for the assembly of the various components of the vacuum arc extinguishing chamber 200, and further improves the convenience of using the positioning tool.

[0060] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and application concept of the present application, and all these changes or substitutions should fall within the protection scope of the claims attached to the present application.

Claims

1. A positioning tool for assembling a vacuum interrupter, characterized in that: include: A base formed with a positioning portion; At least three positioning assemblies are provided, at least three positioning assemblies are provided on the base and circumferentially distributed on the periphery of the positioning portion, the positioning assemblies can approach the positioning portion to clamp the vacuum arc chamber, or the positioning assemblies can move in a direction away from the positioning portion to release the vacuum arc chamber, a plurality of the positioning assemblies and the base are enclosed to form an accommodating space in which the vacuum arc chamber can be placed, and the positioning assemblies can respectively contact the periphery of the vacuum arc chamber to adjust the coaxiality of the vacuum arc chamber; The positioning transmission assembly is connected to the base, disposed below the positioning portion, coaxial with the positioning portion, and is transmission-connected to the positioning assembly. The positioning transmission assembly can rotate axially to drive the positioning assembly to move radially along the positioning portion.

2. The positioning tool according to claim 1, characterized in that: The positioning transmission assembly comprises: A central axis connected to the base and coaxially arranged with the positioning portion; A plurality of transmission rods are provided, connected to the positioning components one by one, a first end of the transmission rod is rotatably connected to the central axis, and a second end of the transmission rod is rotatably connected to the positioning component; A guide structure is formed on the base and can limit the circumferential movement of the positioning assembly along the central axis.

3. The positioning tool according to claim 2, characterized in that: A plurality of mounting grooves are arranged on the base, and the plurality of mounting grooves are evenly distributed on the periphery of the positioning portion, and the mounting grooves extend radially along the positioning portion to form the guide structure, and the positioning components are arranged in the mounting grooves one by one, and the positioning components can move along the extension direction of the mounting grooves.

4. The positioning tool according to claim 3, characterized in that: The positioning component comprises: An indexing slider is disposed in the mounting groove and is movable along the extending direction of the mounting groove, and the indexing slider is rotatably connected to the second end of the transmission rod; A positioning rod connected to the indexing slider and extending away from the base, wherein the extending direction of the positioning rod is the same as the extending direction of the central axis; There are at least two adjusting members, at least two of which are spaced apart on the positioning rod, at least one of which can contact the lower portion of the vacuum arc chamber, and at least one of which can contact the upper portion of the vacuum arc chamber, and the adjusting members are vertically connected to the positioning rod and extend toward the accommodating space.

5. The positioning tool according to claim 4, characterized in that: A slot is provided on one side of the indexing slider facing the central axis, and the second end of the transmission rod is provided in the slot and is rotatably connected to the indexing slider.

6. The positioning tool according to claim 4, characterized in that: The positioning rod is provided with a radially extending mounting hole, and the adjusting member is connected to the mounting hole via a connecting member.

7. The positioning tool according to claim 4, characterized in that: A through hole is provided at the connecting end of the adjusting member. The through hole extends along the axial direction of the positioning rod. The positioning rod passes through the through hole and is adapted to the through hole.

8. The positioning tool according to claim 2, characterized in that: The positioning transmission assembly also includes: The swing arm is connected to the central axis and extends radially along the central axis to the outside of the base, and can drive the central axis to rotate to adjust the distance between the positioning assembly and the central axis.

9. The positioning tool according to claim 8, characterized in that: The base comprises: A seat body, wherein a mounting cavity is formed on the seat body, and the positioning transmission assembly is arranged in the mounting cavity; The positioning block is arranged above the installation cavity, and the positioning portion is formed on the upper surface of the positioning block.

10. The positioning tool according to claim 9, characterized in that: The seat body is provided with a through slot, which extends radially along the central axis and connects the mounting cavity with the outer side of the seat body. The swing arm is passed through the through slot and can move along the width direction of the through slot to drive the central axis to rotate. The slot body of the through slot is arranged as a stepped surface undulating along its width direction.

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