An assembling tool for high-voltage switch cabinet inflation valve body

Abstract

The utility model discloses a kind of assembly tool of high-voltage switchgear inflation valve body, including workbench, assembly tool structure is installed in the middle part of workbench, upper cover assembly that can be lifted along vertical direction is equipped in the top of assembly tool structure, four groups of press assembly are installed in the circumferential equidistance of upper cover assembly axial side, and the riveting end of press assembly is all towards the central axis of assembly tool structure, four groups of press assembly are driven through four groups of pusher component, four groups of pusher component are fixedly arranged on workbench, and the output direction of four groups of pusher component is all along horizontal direction and points to central axis, and it is coaxially arranged with four groups of press assembly one-to-one corresponding;The utility model cooperates with the cooperation of ejector rod, tool spring and base in assembly tool structure, solves the problem that part positioning is fuzzy in traditional manual preassembly, sealing ring assembly deviation, realizes the accurate clamping of sealing ring and valve core clamping groove, and guarantees the stability of inflation valve body sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of air valve assembly technology, specifically an assembly tooling for an air valve body of a high-voltage switchgear. Background Technology

[0002] High-voltage switchgear, as the core equipment in the power transmission and distribution link of the power system, is widely used in substations, industrial plants and new energy power plants. The gas filling valve body is a key sealing component of high-voltage switchgear, which mainly undertakes the functions of sealing, filling and releasing insulating gas and pressure monitoring. Its assembly quality directly determines the airtightness and insulation performance of the switchgear.

[0003] The current method of assembling inflation valve bodies mostly adopts manual pre-assembly followed by pressing. Due to the lack of dedicated assembly tools, it is easy to cause disordered placement of parts and misalignment of seals. In addition, it requires multiple people to work together, resulting in low efficiency and high error rate, which makes it difficult to meet the needs of large-scale production. Utility Model Content

[0004] The purpose of this utility model is to provide an assembly tool for the gas charging valve body of a high-voltage switchgear, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An assembly fixture for a high-voltage switchgear gas-filled valve body includes a workbench. An assembly fixture structure is installed in the middle of the workbench. A top cover assembly that can be raised and lowered vertically is provided directly above the assembly fixture structure. Four sets of pressing components are equidistantly installed on the axial side of the top cover assembly along the circumference, and the pressing ends of the pressing components all face the central axis of the assembly fixture structure. The four sets of pressing components are driven by four sets of pushing components. The four sets of pushing components are fixedly set on the workbench, and the output direction of the four sets of pushing components all points to the central axis in the horizontal direction and are coaxially arranged corresponding to the four sets of pressing components.

[0006] As a further embodiment of this utility model: the assembly tooling structure includes an installation cylinder, a tooling spring, a base, and a push rod. The installation cylinder is installed in an installation slot opened on the workbench and has a top-opening structure. The interior has a cavity to accommodate the tooling spring and the push rod. The tooling spring is placed in the cavity of the installation cylinder, with its lower end abutting against the bottom of the installation cylinder and its upper end abutting against the bottom of the push rod. The push rod is movably inserted through the installation cylinder, with its top penetrating the installation cylinder and able to abut against the bottom of the valve core. The base is installed above the installation cylinder and is used to position and limit the valve body.

[0007] As a further embodiment of this utility model: the upper cover assembly includes a mounting frame, a first cylinder and a cover body. The mounting frame has an inverted L-shaped structure, with its vertical section fixedly mounted on the workbench. The first cylinder is vertically mounted on the horizontal section of the mounting frame, and its output end is fixedly connected to the cover body for driving the cover body to rise and fall smoothly in the vertical direction.

[0008] As a further embodiment of this utility model: the press-fit assembly includes a press-fit rod, a limiting plate, and a press-fit spring. The press-fit rod is horizontally slidably connected in the circumferential assembly groove of the cover body. One end of the rod is set towards the central axis and is used to cooperate with the outer wall of the valve body to complete the press-fit action. The other end extends to the outside of the assembly groove and is used to abut against the push assembly. The limiting plate is fixedly sleeved on the circumferential surface of the press-fit rod and is located inside the assembly groove. The press-fit spring is sleeved on the outside of the press-fit rod. One end of the spring abuts against the inner side wall of the assembly groove, and the other end abuts against the limiting plate.

[0009] As a further embodiment of this utility model: the pushing assembly includes a bracket, a second cylinder and a pushing head. The bracket is fixedly connected to the workbench, the second cylinder is fixedly connected to the bracket by bolts, and the output end of the second cylinder is fixedly connected to the pushing head, which is used to abut against the outer end of the rivet rod.

[0010] As a further improvement of this utility model, the upper end face of the base is provided with an annular positioning groove that is adapted to the valve shell, so as to achieve precise positioning of the valve shell.

[0011] As a further improvement of this utility model: the push rod is a stepped shaft structure, with a positioning boss on its upper part that matches the valve core, and the middle part of the push rod is slidably connected to the inner wall of the cavity of the mounting cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: An assembly fixture for a high-voltage switchgear inflation valve body solves the problems of unclear part positioning and sealing ring assembly deviation in traditional manual pre-assembly through the coordinated cooperation of the top rod, fixture spring, and base in the assembly fixture structure. This achieves precise clamping of the sealing ring and valve core slot, ensuring the stability of the inflation valve body's sealing performance. Simultaneously, the automated design of the cover lifting and lowering driven by the first cylinder in the upper cover assembly solves the problems of low efficiency and poor consistency in manual pressing and positioning, achieving efficient installation of the valve core, sealing ring, and inflation valve spring into the valve body. Precise pressing enhances the standardization of the assembly process. Through the linkage of four symmetrically arranged pressing and pushing components, the problems of easy spring ejection and unreliable locking in traditional pressing are solved, achieving uniform riveting of the limiting groove on the top of the valve body and ensuring the axial stable limiting of the inflation valve spring. Combined with the overall integrated tooling structure design and cylinder-driven automated operation mode, the problems of poor coordination and high error rate in traditional multi-person collaborative operation are solved, significantly reducing human intervention error and achieving efficient and large-scale assembly of the inflation valve body, while taking into account both assembly efficiency and quality consistency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the assembly tooling for an air-filled valve body of a high-voltage switchgear.

[0014] Figure 2This is a cross-sectional view of the press-fit component in the assembly tooling for the gas-filling valve body of a high-voltage switchgear.

[0015] Figure 3 This is a schematic diagram of the initial arrangement of components in an assembly fixture for a high-voltage switchgear gas valve body.

[0016] Figure 4 This is a schematic diagram of the assembly fixture structure in the pressed-down state of an assembly fixture for a high-voltage switchgear gas valve body.

[0017] Figure 5 This is a cross-sectional view of the inflation valve.

[0018] Figure 6 This is a schematic diagram of the inflation valve.

[0019] In the figure: workbench 10, assembly tooling structure 20, top cover assembly 30, mounting bracket 301, first cylinder 302, cover body 303, press assembly 40, press rivet rod 401, limit plate 402, press spring 403, push assembly 50, bracket 501, second cylinder 502, push head 503, sealing ring 1, valve shell 2, valve core 3, air valve spring 4, mounting cylinder 5, tooling spring 6, base 7, annular positioning groove 71, top rod 8, positioning boss 81. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-6 In this embodiment of the present invention, an assembly fixture for a high-voltage switchgear gas-filling valve body includes a workbench 10. An assembly fixture structure 20 is installed in the middle of the workbench 10. A top cover assembly 30 that can be raised and lowered vertically is provided directly above the assembly fixture structure 20. Four sets of pressing components 40 are equidistantly installed on the axial side of the top cover assembly 30 along the circumference. The pressing ends of the pressing components 40 all face the central axis of the assembly fixture structure 20. The four sets of pressing components 40 are driven by four sets of pushing components 50. The four sets of pushing components 50 are fixedly installed on the workbench 10. The output direction of the four sets of pushing components 50 is horizontal and points to the central axis, and they are coaxially arranged one-to-one with the four sets of pressing components 40.

[0022] like Figure 5 and Figure 6As shown, the inflation valve includes a sealing ring 1, a valve body 2, a valve core 3, and an inflation valve spring 4. The valve body 2 is a hollow shell that runs vertically through the valve body, and the sealing ring 1, the valve core 3, and the inflation valve spring 4 are installed inside the valve body 2.

[0023] The assembly fixture structure 20 includes an installation cylinder 5, a fixture spring 6, a base 7, and a push rod 8. The installation cylinder 5 is installed in an installation slot on the workbench 10 and has a top-opening structure. It has an internal cavity to accommodate the fixture spring 6 and the push rod 8, providing basic support for the overall structure. The base 7 is installed above the installation cylinder 5 and is used to position and limit the valve body 2. The fixture spring 6 is placed in the cavity of the installation cylinder 5, with its lower end abutting against the bottom of the installation cylinder 5 and its upper end abutting against the bottom of the push rod 8. It can be compressed and stored when the push rod 8 is under force, and push the push rod 8 back to its original position through elastic recovery after the force is released. The push rod 8 is movably inserted through the installation cylinder 5, with its top end penetrating the installation cylinder 5, and can abut against the bottom of the valve core 3.

[0024] The upper surface of the base 7 is provided with an annular positioning groove 71 that is adapted to the valve housing 2. The annular positioning groove 71 is used to achieve precise positioning of the valve housing 2. The push rod 8 is a stepped shaft structure, and its upper part is provided with a positioning boss 81 that is adapted to the valve core 3. The middle part of the push rod 8 is slidably connected to the inner wall of the cavity of the mounting cylinder 5.

[0025] During operation, first, the sealing ring 1 is fitted onto the push rod 8. Then, the valve housing 2 is placed onto the base 7, the valve core 3 is placed on top of the push rod 8, and the inflation valve spring 4 is placed on top of the valve core 3. This structure is as follows: Figure 3 As shown, the inflation valve spring 4 is then pressed, and the inflation valve spring 4 and valve core 3 slide downwards along the axial direction of the mounting cylinder 5. When pressed to the bottom, the sealing ring 1 is precisely engaged in the groove of the valve core 3. This structure is as follows. Figure 4 As shown, after releasing the pressure, it will return to its original position upwards as the tooling spring 6 elastically recovers.

[0026] The top cover assembly 30 includes a mounting bracket 301, a first cylinder 302, and a cover body 303. The mounting bracket 301 has an inverted L-shaped structure, with its vertical section fixedly mounted on the workbench 10 and its horizontal section providing stable support for the installation of the first cylinder 302. The first cylinder 302 is vertically mounted on the horizontal section of the mounting bracket 301, and its output end is fixedly connected to the cover body 303, used to drive the cover body 303 to move smoothly up and down in the vertical direction. During operation, when the first cylinder 302 drives the cover body 303 to move down and close, it can push the sealing ring 1, valve core 3, and inflation valve spring 4 to fully enter the valve housing 2, completing precise pressing and positioning.

[0027] The press-fit assembly 40 includes a press-fit rod 401, a limiting plate 402, and a press-fit spring 403. The press-fit rod 401 is horizontally slidably connected in the circumferential assembly groove of the cover 303. One end of the rod is set towards the central axis and is used to cooperate with the outer wall of the valve housing 2 to complete the press-fit action. The other end extends to the outside of the assembly groove and is used to abut against the push assembly 50. The limiting plate 402 is fixedly sleeved on the circumferential surface of the press-fit rod 401 and is located inside the assembly groove. The press-fit spring 403 is sleeved on the outside of the press-fit rod 401. One end of the spring abuts against the inner side wall of the assembly groove, and the other end abuts against the limiting plate 402.

[0028] The pushing assembly 50 includes a bracket 501, a second cylinder 502, and a pushing head 503. The bracket 501 is fixedly connected to the worktable 10. The second cylinder 502 is fixedly connected to the bracket 501 by bolts. The output end of the second cylinder 502 is fixedly connected to the pushing head 503, which is used to abut against the outer end of the rivet rod 401.

[0029] The working principle of this utility model is as follows: First, the sealing ring 1 is fitted onto the top rod 8 of the assembly fixture structure 20. Then, the valve shell 2 is placed on the base 7, and the base 7 is used to position and limit the valve shell 2. Next, the valve core 3 is placed on top of the top rod 8. Finally, the inflation valve spring 4 is fitted onto top of the valve core 3, completing the initial parts placement. Manually pressing the inflation valve spring 4 transmits the driving force to the valve core 3 and the top rod 8 in sequence, causing the top rod 8 to slide downward along the axial direction of the mounting cylinder 5. The fixture spring 6 is compressed and stores energy. When pressed to the bottom, the sealing ring 1 is precisely engaged in the groove of the valve core 3. After releasing the press, the fixture spring 6 elastically returns, pushing the top rod 8, valve core 3, and inflation valve spring 4 upward to reset. The first cylinder 302 of the upper cover assembly 30 is activated, driving the cover 303 to move downwards vertically. During the downward movement of the cover 303, the valve core 3, the inflation valve spring 4, and the pre-installed sealing ring 1 are simultaneously pushed into the valve housing 2, completing the precise pressing and positioning of each part. The second cylinder 502 of the four-group pushing assembly 50 is activated, driving the pushing head 503 to move horizontally towards the central axis. The pushing head 503 abuts against the outer end of the riveting rod 401 and pushes it to slide towards the valve housing 2. The inner end of the riveting rod 401 corresponds to the outer periphery of the top of the valve housing 2. Under the action of the pushing force, four evenly distributed limiting grooves 21 are riveted into the outer periphery of the top of the valve housing 2, thereby axially limiting the inflation valve spring 4 and preventing it from popping out. After the riveting is completed, the second cylinder 502 drives the push head 503 to reset in the opposite direction, the press spring 403 elastically returns, and drives the riveting rod 401 back to the initial position. Then the first cylinder 302 drives the cover 303 to move up and down to reset. Finally, the assembled air valve body is taken out from the base 7, completing the entire assembly process.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An assembly fixture for a gas-filled valve body of a high-voltage switchgear, characterized in that, The assembly includes a workbench (10), an assembly fixture structure (20) is installed in the middle of the workbench (10), and a top cover assembly (30) that can be raised and lowered in the vertical direction is provided directly above the assembly fixture structure (20). Four sets of pressing assemblies (40) are installed equidistantly along the circumference on the axial side of the top cover assembly (30), and the pressing ends of the pressing assemblies (40) are all facing the central axis of the assembly fixture structure (20). The four sets of pressing assemblies (40) are driven by four sets of pushing assemblies (50). The four sets of pushing assemblies (50) are fixedly set on the workbench (10), and the output direction of the four sets of pushing assemblies (50) is all pointing to the central axis in the horizontal direction, and they are coaxially set with the four sets of pressing assemblies (40) one by one.

2. The assembly fixture for a high-voltage switchgear gas-filling valve body according to claim 1, characterized in that, The assembly tooling structure (20) includes an installation cylinder (5), a tooling spring (6), a base (7), and a push rod (8). The installation cylinder (5) is installed in the installation slot opened on the workbench (10). It is a top-opening structure with a cavity inside to accommodate the tooling spring (6) and the push rod (8). The tooling spring (6) is placed in the cavity of the installation cylinder (5). Its lower end abuts against the bottom of the installation cylinder (5), and its upper end abuts against the bottom of the push rod (8). The push rod (8) is movably inserted through the installation cylinder (5). Its top passes through the installation cylinder (5) and can abut against the bottom of the valve core (3). The base (7) is installed above the installation cylinder (5) and is used to position and limit the valve body (2).

3. The assembly fixture for a high-voltage switchgear gas-filling valve body according to claim 1, characterized in that, The top cover assembly (30) includes a mounting bracket (301), a first cylinder (302), and a cover body (303). The mounting bracket (301) has an inverted L-shaped structure, with its vertical section fixedly mounted on the workbench (10). The first cylinder (302) is vertically mounted on the horizontal section of the mounting bracket (301), and its output end is fixedly connected to the cover body (303) to drive the cover body (303) to rise and fall smoothly in the vertical direction.

4. The assembly fixture for a high-voltage switchgear gas-filling valve body according to claim 1, characterized in that, The press-fit assembly (40) includes a press-fit rod (401), a limiting plate (402), and a press-fit spring (403). The press-fit rod (401) is horizontally slidably connected in the circumferential assembly groove of the cover (303). One end of the rod is set towards the central axis and is used to cooperate with the outer wall of the valve body (2) to complete the press-fit action. The other end extends to the outside of the assembly groove and is used to abut against the push assembly (50). The limiting plate (402) is fixedly sleeved on the circumferential surface of the press-fit rod (401) and located inside the assembly groove. The press-fit spring (403) is sleeved on the outside of the press-fit rod (401). One end of the spring abuts against the inner side wall of the assembly groove, and the other end abuts against the limiting plate (402).

5. The assembly fixture for a high-voltage switchgear gas-filling valve body according to claim 4, characterized in that, The pushing assembly (50) includes a bracket (501), a second cylinder (502) and a pushing head (503). The bracket (501) is fixedly connected to the worktable (10). The second cylinder (502) is fixedly connected to the bracket (501) by bolts. The output end of the second cylinder (502) is fixedly connected to the pushing head (503). The pushing head (503) is used to abut against the outer end of the rivet rod (401).

6. The assembly fixture for a high-voltage switchgear gas-filling valve body according to claim 2, characterized in that, The upper surface of the base (7) is provided with an annular positioning groove (71) that is adapted to the valve shell (2) to achieve precise positioning of the valve shell (2).

7. The assembly fixture for a high-voltage switchgear gas-filling valve body according to claim 2, characterized in that, The push rod (8) has a stepped shaft structure, and its upper part is provided with a positioning boss (81) that is compatible with the valve core (3). The middle part of the push rod (8) is slidably connected to the inner wall of the cavity of the mounting cylinder (5).

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