Alignment tool for three-phase stationary contacts

Abstract

The application discloses a kind of alignment tool of three-phase static contact, including positioning arc plate, several positioning pins, two positioning columns and static end positioning plate;Several first positioning holes are provided on the metal flange of the disc insulator of three-phase static contact;Positioning arc plate is provided with several second positioning holes;Positioning pin is arranged in first positioning hole, second positioning hole and is locked in the support frame of disc insulator;The lower end of two positioning columns is respectively fixed on positioning arc plate with interval;Static end positioning plate includes riser and connecting plate;The both ends of riser are integrally connected with the connecting plate arranged in horizontal direction respectively;Two connecting plates are respectively fixed on the upper end of two positioning columns;Riser is perpendicular to the conductive rod of three-phase static contact, and three third positioning holes are arranged with interval thereon, and the pitch of third positioning hole is same with the pitch of the conductive rod of three-phase static contact.The application is more convenient and safer to realize alignment when installing three-phase static contact in GIS high-voltage switchgear, and assembly is easier, more efficient.

Description

Technical Field

[0001] This invention relates to the field of high-voltage switchgear technology, and in particular to an alignment fixture for a three-phase stationary contact. Background Technology

[0002] GIS high-voltage switchgear is increasingly widely used in power systems. Among them, the accuracy of the matching between the moving and stationary contacts in a three-position switch has a significant impact on the switch's performance and operational reliability. Currently, most assembly is performed on-site by operators. The assembly process requires matching the travel direction of a single moving contact with its corresponding stationary contact, and simultaneously ensuring the coaxiality and direction of all three moving contacts in the same switch, as well as controlling the spacing. The accuracy and precision of the assembly depend heavily on the operator's experience, resulting in low efficiency and inconsistent quality. Summary of the Invention

[0003] The purpose of this invention is to provide a tooling for aligning three-phase stationary contacts, which enables more convenient and safer alignment when installing three-phase stationary contacts in GIS high-voltage switchgear, making assembly easier and more efficient.

[0004] To achieve the above objectives, the solution of the present invention is:

[0005] A three-phase stationary contact alignment fixture includes a positioning arc plate, several positioning pins, two positioning posts, and a stationary end positioning plate. The metal flange of the disc insulator of the three-phase stationary contact has several first positioning holes. The positioning arc plate has several second positioning holes corresponding to the first positioning holes. The positioning pins pass through the first and second positioning holes and are locked to the support frame of the disc insulator. The lower ends of the two positioning posts are fixed at intervals on the positioning arc plate. The stationary end positioning plate includes a vertical plate and a connecting plate. Both ends of the vertical plate are integrally connected to horizontally arranged connecting plates. The two connecting plates are fixed to the upper ends of the two positioning posts. The vertical plate is perpendicular to the conductive rod of the three-phase stationary contact and has three third positioning holes spaced at intervals on it, the spacing of which is the same as the spacing of the conductive rod of the three-phase stationary contact.

[0006] The vertical plate has three guide grooves on the side facing the three-phase stationary contact, and the third positioning hole is located at the center of each guide groove.

[0007] A reinforcing rib connects the vertical plate and the connecting plate.

[0008] The first positioning holes are arranged at equal angular intervals around the center of the metal flange, and the second positioning holes are arranged at equal angular intervals around the center of the positioning arc plate, and the interval between adjacent first positioning holes is equal to the interval between adjacent second positioning holes.

[0009] The lower end of the positioning pin passes through the first positioning hole and the second positioning hole in sequence and is then threadedly connected to the support frame.

[0010] Preferably, the upper surface of the support frame is provided with a plurality of protrusions, and the lower end of the positioning pin is threadedly connected to the protrusions.

[0011] The lower end of the positioning post is fixedly connected to the second positioning hole of the positioning arc plate.

[0012] After adopting the above technical solution, the present invention has the following technical effects:

[0013] ① The same pair of tooling can be used to simultaneously assemble and debug the three conductors of the three-phase stationary contact, which can conveniently and accurately adjust and insert the distance and parallelism between the three conductors of the three-phase stationary contact, thereby meeting the requirements of assembly dimensional accuracy and positional accuracy.

[0014] ② This invention utilizes the metal flange of the disc insulator of the three-phase stationary contact as the positioning mechanism of the alignment tool, which not only ensures the connection strength, but also eliminates the need to open positioning holes in the disc insulator, thus having no impact on the insulation performance of the disc insulator and improving the safety performance of the product during use.

[0015] ③ The positioning arc plate has an arc structure. After the three-phase stationary contacts are pre-installed on the disc insulator, the alignment tool can be installed from the horizontal direction (the side of the three-phase stationary contacts). There is no need to lift it up during the assembly and disassembly process, making the assembly and disassembly easier and more efficient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram illustrating the assembly of the positive tooling and the three-phase stationary contact in a specific embodiment of the present invention;

[0017] Figure 2 This is a perspective view of the alignment tooling according to a specific embodiment of the present invention;

[0018] Figure 3 This is a front view of the tooling according to a specific embodiment of the present invention;

[0019] Figure 4 This is a side view of the orthogonal tooling according to a specific embodiment of the present invention;

[0020] Figure 5 This is a top view of the tooling according to a specific embodiment of the present invention;

[0021] Figure 6 This is an exploded view of the tooling according to a specific embodiment of the present invention;

[0022] Explanation of icon numbers:

[0023] 1----Metal flange; 11---First positioning hole; 2----Positioning arc plate;

[0024] 21---Second positioning hole; 3----Positioning pin; 4----Positioning post;

[0025] 5----Stationary end positioning plate; 51---Vertical plate; 511--Third positioning hole;

[0026] 512--Guide groove; 52---Connecting plate; 53---Reinforcing rib;

[0027] 6----Support frame; 61---Protrusion; a----Three-phase stationary contact;

[0028] b----Disc insulator. Detailed Implementation

[0029] To further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of protection of the 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.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of the embodiments of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, or the orientation or positional relationship in which those skilled in the art are usually understood. It is only for the purpose of simplifying the description of the embodiments of the present invention, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0034] Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The following disclosure provides many different embodiments or examples for implementing different structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0038] Furthermore, this invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0039] refer to Figures 1 to 6 As shown, the present invention discloses an alignment fixture for a three-phase stationary contact, including a positioning arc plate 2, several positioning pins 3, two positioning posts 4 and a stationary end positioning plate 5.

[0040] Several first positioning holes 11 are provided on the metal flange 1 of the disc insulator b of the three-phase stationary contact a;

[0041] The positioning arc plate 2 is provided with a plurality of second positioning holes 21 corresponding to the first positioning hole 11;

[0042] The positioning pin 3 passes through the first positioning hole 11 and the second positioning hole 21 and is locked onto the support frame 6 of the disc insulator b;

[0043] The lower ends of the two positioning posts 4 are fixed to the positioning arc plate 2 at intervals;

[0044] The stationary end positioning plate 5 includes a vertical plate 51 and a connecting plate 52; the two ends of the vertical plate 51 are integrally connected to the horizontally arranged connecting plate 52; the two connecting plates 52 are respectively fixed to the upper ends of the two positioning posts 4; the vertical plate 51 is perpendicular to the conductive rod of the three-phase stationary contact a, and three third positioning holes 511 are arranged on it at intervals, the spacing of the third positioning holes 511 is the same as the spacing of the conductive rod of the three-phase stationary contact a.

[0045] The following illustrates specific embodiments of the present invention.

[0046] The vertical plate 51 has three guide grooves 512 on the side facing the three-phase stationary contact a, and a third positioning hole 511 is respectively located at the center of each guide groove 512. The guide grooves 512 are used to position the conductor outlet surface of the three-phase stationary contact a correctly and to improve the timing accuracy.

[0047] A reinforcing rib 53 is connected between the vertical plate 51 and the connecting plate 52 to improve the strength of the vertical plate 51 and maintain the verticality of the vertical plate 51.

[0048] The aforementioned first positioning holes 11 are arranged at equal angular intervals around the center of the metal flange 1, and the second positioning holes 21 are arranged at equal angular intervals around the center of the positioning arc plate 2, with the interval between adjacent first positioning holes 11 being equal to the interval between adjacent second positioning holes 21. In fact, the metal flange 1 is the flange on which the disc insulator b of the three-phase stationary contact a is installed on the high-voltage switchgear. The first positioning holes 11 are the through holes on the flange used for locking bolts, thus eliminating the need for additional drilling into the disc insulator b and avoiding any impact on the disc insulator b after the subsequent removal of the alignment fixture.

[0049] The lower end of the aforementioned positioning pin 3 is sequentially inserted through the first positioning hole 11 and the second positioning hole 21 and then threadedly connected to the support frame 6 to achieve locking, thereby facilitating disassembly and assembly.

[0050] Furthermore, the upper surface of the support frame 6 is provided with several protrusions 61, and the lower end of the positioning pin 3 is threadedly connected to the protrusions 61. By providing the protrusions 61, the connection strength between the positioning pin 3 and the support frame 6 can be improved, and at the same time, gaps can be formed between other positions of the support frame 6 and the metal flange 1, so as to allow the positioning pin 4 to be locked on the positioning arc plate 2 and the metal flange 1.

[0051] The lower end of the aforementioned positioning post 4 is fixedly connected to the second positioning hole 21 of the positioning arc plate 2. The positioning post 4 can be assembled directly using the extra second positioning hole 21 of the positioning arc plate 2 (the second positioning hole 21 remaining after assembling the positioning pin 3). This avoids designing additional positioning structures on the positioning arc plate 2, making the structure simpler and easier to assemble.

[0052] refer to Figure 1 As shown, the method of using this invention is as follows:

[0053] ①Pre-install all the components of the three-phase stationary contact a on the disc insulator b, and place the assembled components on the support frame 6;

[0054] ② After assembling the alignment fixture, place it in the horizontal direction of the three-phase stationary contact a and place it above the metal flange 1 of the disc insulator b. Use the positioning pin 3 to position the positioning arc plate 2 and the metal flange 1, and lock the positioning pin 3 onto the support frame 6.

[0055] ③ Align the three conductors of the three-phase stationary contact a with the third positioning hole 511 respectively (if a guide groove 512 is provided, insert the end of the conductor into the guide groove 512), adjust the relative position of the mounting screw holes of the three-phase stationary contact a to achieve the hole alignment of the three-phase stationary contact a, and then tighten the fixing screws of the three-phase stationary contact a.

[0056] ④ After adjustment, loosen the positioning pin 3 and remove the alignment fixture from the workpiece in a horizontal direction.

[0057] Through the above scheme, the present invention can use the same alignment tool to simultaneously assemble and debug the three conductors of the three-phase stationary contact a, which can conveniently and accurately adjust and insert the distance and parallelism between the three conductors of the three-phase stationary contact a, thereby meeting the requirements of assembly dimensional accuracy and positional accuracy. The present invention uses the metal flange 1 of the disc insulator b of the three-phase stationary contact a as the positioning mechanism of the alignment tool, which not only ensures the connection strength, but also eliminates the need to open positioning holes in the disc insulator b, thus having no impact on the insulation performance of the disc insulator b and improving the safety performance during product use. The positioning arc plate 2 has an arc structure. After the three-phase stationary contact a is pre-installed on the disc insulator b, the alignment tool can be installed from the horizontal direction (the side of the three-phase stationary contact a). There is no need to lift it up during the assembly and disassembly process, making the assembly and disassembly easier and more efficient.

[0058] The above embodiments and figures are not intended to limit the product form and style of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A kind of alignment tool of three-phase static contact, it is characterized in that: Including positioning arc plate, several positioning pins, two positioning columns and static end positioning plate; Several first positioning holes are provided on the metal flange of the disc insulator of three-phase static contact; The positioning arc plate is provided with several second positioning holes corresponding to the first positioning hole; The positioning pin is arranged in the first positioning hole, second positioning hole and is locked in the support frame of disc insulator; The lower end of two positioning columns is fixed on the positioning arc plate respectively with interval; The static end positioning plate includes vertical plate and connecting plate;The two ends of the vertical plate are integrally connected with the connecting plate arranged in horizontal direction respectively;Two connecting plates are fixed on the upper end of two positioning columns respectively;The vertical plate is perpendicular to the conductive rod of three-phase static contact, and three third positioning holes are arranged on it with interval, and the pitch of the third positioning hole is same with the pitch of the conductive rod of three-phase static contact.

2. The alignment tool of three-phase static contact according to claim 1, wherein: One side of the vertical plate facing three-phase static contact is provided with three guide grooves, and the third positioning hole is arranged at the center position of each guide groove.

3. The alignment tool of three-phase static contact according to claim 1, wherein: Reinforcing ribs are connected between the vertical plate and the connecting plate.

4. The alignment tool of three-phase static contact according to claim 1, wherein: The first positioning hole is arranged with equal angle interval around the center of the metal flange, the second positioning hole is arranged with equal angle interval around the center of the positioning arc plate, and the interval of adjacent first positioning hole is equal to the interval of adjacent second positioning hole.

5. The alignment tool of three-phase static contact according to claim 1, wherein: The lower end of the positioning pin is arranged in the first positioning hole, second positioning hole in turn and is connected with support frame by screw thread.

6. The alignment tool of three-phase static contact according to claim 5, wherein: The upper surface of the support frame is provided with several convex blocks, and the lower end of the positioning pin is connected with the convex block by screw thread.

7. The alignment tool of three-phase static contact according to claim 1, wherein: The lower end of the positioning column is fixedly connected in the second positioning hole of the positioning arc plate.

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