A circuit breaker insulation platform flipping fixture and method

Abstract

This invention provides a circuit breaker insulation platform flipping fixture, relating to the field of auxiliary tooling technology. It includes a base, a speed reducer drive assembly mounted on one side of the base, and a bearing seat mounted on the other side of the base. The speed reducer drive assembly is fixedly connected to a first fastening plate via an output shaft, and the bearing seat is fixedly connected to a second fastening plate via a rotating shaft. A support plate is provided between the first and second fastening plates. A top plate and a bottom plate are mounted between the first and second fastening plates via locking components. A plurality of positioning holes are evenly distributed along the length of the top and bottom plates, and a plurality of pin holes are evenly distributed around the periphery of the positioning holes. The insulation platform is detached and installed between the first and second fastening plates corresponding to the pin holes.

Description

Technical Field

[0001] This invention relates to the field of auxiliary tooling technology, and more specifically to a circuit breaker insulation platform flipping tooling. Background Technology

[0002] The 126GIS circuit breaker insulation platform is the core insulating load-bearing component supporting the three-phase conductive parts. It is large in size and heavy in weight. The assembly process of the insulation platform and base plate requires multiple operations, including tightening bottom bolts, pre-assembling side components, and connecting upper parts. Different processes have different requirements for the placement angle of the workpiece. Traditional assembly methods lack dedicated tooling, relying solely on multiple crane lifts and manual adjustments of the workpiece's tilt angle. This not only introduces safety risks such as collisions with insulating parts and workpiece slippage due to repeated crane starts and stops, but also results in time-consuming repositioning and extremely low batch assembly efficiency. Furthermore, the lack of a dedicated positioning benchmark makes horizontal misalignment during the assembly of the insulation platform and base plate prone to occur, making it difficult to stably control the three-phase phase spacing. Assembly deviations can lead to internal discharge and insulation failure during circuit breaker operation. Therefore, the industry has developed circuit breaker tooling with a hand-cranked tilting function to replace the pure crane lifting operation.

[0003] In the prior art, the authorized announcement number CN204118547U discloses a hand-cranked flipping device, which includes a chassis base, two side support plates, a rotating shaft, a worm gear reducer and a handwheel. The side wall of the circuit breaker is clamped by the two rotating shafts, and the hand-cranked reducer drives the workpiece to rotate as a whole. This can realize the placement of the circuit breaker at multiple angles, which simplifies the flipping operation to a certain extent and reduces the intensity of manual labor.

[0004] However, the aforementioned side-clamping flipping device is only suitable for the disassembly and maintenance of finished circuit breakers. It has inherent defects that cannot be reconciled with the pre-assembly process of the 126GIS insulation platform and base plate. The core defects are concentrated in two dimensions: workpiece positioning and rapid assembly and disassembly. First, the device only relies on the left and right side walls of the workpiece for clamping and limiting, without a bottom positioning reference structure that matches the standard three-phase phase spacing of 126GIS. There is no dedicated positioning pin. After the insulation platform is placed, there is no constraint in the front-back and left-right directions. The workpiece is very easy to move and shift during the bolt tightening force and flipping process, which cannot stably guarantee the assembly accuracy of the phase spacing and results in poor product consistency. Second, the device only has fixed clamping shafts on both sides, without a detachable clamping and bearing structure with upper and lower layers. The insulation platform and base plate assembly cannot be quickly positioned and supported. During clamping, additional straps, external pressure plates, and multiple sets of auxiliary bolts are required for multi-point clamping. During disassembly, all auxiliary fasteners must be removed one by one. When changing workpieces, the clamping width of the side plate must be manually adjusted. The entire assembly and disassembly process is cumbersome and cannot be adapted to batch continuous assembly on the production line.

[0005] Furthermore, the existing tooling system exhibits significant technological fragmentation: side clamping tooling with only a flipping function has poor positioning accuracy and low workpiece assembly and disassembly efficiency; while fixed assembly platforms with only positioning pins can guarantee the phase spacing dimensions, they lack a matching flipping mechanism, and workpiece angle adjustment still requires a crane to lift the platform and flip it over, making it impossible for both types of tooling to achieve flipping or precise positioning at a single point, and unable to simultaneously meet the needs of high-precision assembly and rapid batch assembly and disassembly. Summary of the Invention

[0006] The purpose of this invention is to provide a circuit breaker insulation platform flipping fixture that can solve the problem that existing fixtures cannot simultaneously meet the requirements of high-precision assembly and rapid batch disassembly and assembly.

[0007] To achieve the above objectives, the present invention proposes a circuit breaker insulation platform flipping fixture, including a base, a reducer drive assembly installed on one side of the base, a bearing seat installed on the other side of the base, the reducer drive assembly being fixedly connected to a first fastening plate via an output shaft, the bearing seat being fixedly connected to a second fastening plate via a rotating shaft, and a support plate being provided between the first fastening plate and the second fastening plate. A top plate and a bottom plate are installed between the first and second fastening plates via locking components. Several positioning holes are evenly distributed along the length of the top and bottom plates, and several pin holes are evenly distributed around the positioning holes. An insulating platform is detached and installed between the first and second fastening plates corresponding to the pin holes.

[0008] A further configuration is provided in which an adapter plate is fixedly installed at both ends of the first and second fastening plates. The adapter plate has several screw holes, and the first and second fastening plates have corresponding round holes. The locking element is provided by threading through the screw holes and round holes to connect the first fastening plate and the adapter plate.

[0009] Furthermore, the spacing between any two adjacent positioning holes is the same to ensure installation accuracy.

[0010] Further configured, the support plate includes a base plate, and extension plates are provided at both ends of the base plate, the extension plates being fixedly installed on the side wall of the first fastening plate or the second fastening plate.

[0011] A further configuration is that at least two reinforcing plates are fixedly installed on the side wall of the base plate, and the extension plate extends to the side of the extension plate.

[0012] Further configured, the base is a rectangular frame, the reducer drive assembly is fixedly installed above one side of the base via a support platform, and the bearing seat is fixedly installed above the other side of the base via a support platform.

[0013] A further configuration is that the rotating shaft is vertically mounted on the second fastening plate, and a plurality of reinforcing ribs are provided between the side wall of the rotating shaft and the second fastening plate, the reinforcing ribs being evenly distributed circumferentially along the central axis of the rotating shaft.

[0014] The output shaft is further configured such that it is vertically mounted on the first fastening plate, and a plurality of reinforcing ribs are provided between the side wall of the output shaft and the first fastening plate, the reinforcing ribs being evenly distributed circumferentially along the central axis of the output shaft.

[0015] Further configured, the reducer drive assembly includes a reducer, and the reducer is connected to a handwheel via a lead screw.

[0016] A method of using the circuit breaker insulation platform flipping fixture described in any of the above claims includes the following steps: S1, fixture body in place: the base is fixed to the work station, the reducer drive assembly on one side of the base is connected to the first fastening plate through the output shaft, the bearing seat on the other side of the base is connected to the second fastening plate through the rotating shaft, and the support plate is connected between the first fastening plate and the second fastening plate to form a rotatable flipping support frame. S2. Place the base plate between the first and second fastening plates, and fix the base plate to the fastening plates on both sides using the locking device. Complete the installation and alignment by relying on the positioning holes arranged along the length of the base plate. S3. Place the insulating platform on the base plate, aligning the corresponding holes of the insulating platform with the pin holes around the positioning holes on the base plate, and use the pin connector to confine the insulating platform between the base plate and the two side fastening plates. S4. Place the top plate over the insulating platform, aligning the pin holes of the top plate with the upper part of the insulating platform. Secure the top plate to the first and second fastening plates using locking devices. The insulating platform is then clamped and fixed by the cooperation of the top plate and the bottom plate. S5. Control the reducer drive assembly, drive the first fastening plate to rotate via the output shaft, and simultaneously drive the support plate, the second fastening plate, the bottom plate, the insulating platform and the top plate to rotate around the bearing seat shaft to the target working angle, and lock it to complete the corresponding assembly process. S6. After all assembly processes are completed, the reducer drive assembly drives the workpiece to reset to the initial angle, loosens the locking parts, removes the top plate in sequence, takes out the assembled insulating platform assembly, and the tooling can enter the next set of assembly cycles.

[0017] The beneficial effects of one or more of the above technical solutions: The circuit breaker insulation platform flipping fixture of the present invention comprises a reducer drive assembly and a bearing seat installed on both sides of the base, with a first fastening plate and a second fastening plate connected by an output shaft and a rotating shaft respectively, and a support plate set between the two fastening plates to form a stable rotary support frame. A top plate and a bottom plate are detachably assembled between the two fastening plates by locking components. Positioning holes are evenly distributed along the length of the top and bottom plates, and pin holes are provided around the periphery of the positioning holes. Precise positioning of the insulation platform is achieved by aligning the pin holes. This structure integrates a precise positioning clamping unit with a rotatable flipping frame, solving the problem of traditional side-clamp flipping fixtures relying solely on sidewall clamping of the workpiece and lacking... The planar positioning reference causes the workpiece to easily shift and deviate during fastening and flipping, making it difficult to guarantee the assembly accuracy of the phase spacing. In addition, the clamping requires additional auxiliary fasteners, and the disassembly and assembly operations are cumbersome and inefficient. It also overcomes the technical limitations of fixed positioning fixtures, which cannot drive the overall flipping of the workpiece, angle adjustment relies on crane hoisting and transportation, and batch assembly operations are inefficient. It can simultaneously complete the precise positioning and clamping of the insulating platform, the smooth flipping at any angle, and the rapid disassembly and unloading on a single set of fixtures, effectively improving the consistency of assembly accuracy and overall operation efficiency, eliminating the safety hazards of repeated crane hoisting, and adapting to the production needs of batch assembly in the workshop. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Explosion-proof diagram of the structure; In the diagram, 1. Base; 2. Reducer drive assembly; 3. Bearing seat; 4. Output shaft; 5. First fastening plate; 6. Rotating shaft; 7. Second fastening plate; 8. Support plate; 9. Locking element; 10. Top plate; 11. Bottom plate; 12. Positioning hole; 13. Pin hole; 14. Insulating platform; 15. Adapter plate; 16. Screw hole; 17. Round hole; 18. Base plate; 19. Extension plate; 20. Reinforcing plate; 21. Support platform; 22. Reinforcing rib plate; 23. Reducer; 4. Lead screw; 25. Handwheel. Detailed Implementation

[0020] The specific implementation of this embodiment will now be described with reference to the accompanying drawings.

[0021] Example 1 A circuit breaker insulation platform flipping fixture, as shown in the reference. Figures 1 to 2This embodiment provides a circuit breaker insulation platform flipping fixture, which is adapted to the pre-assembly process of the insulation platform and base plate of the 126GIS circuit breaker. The whole adopts an integrated structural design of closed rotary support frame + modular pin positioning and clamping unit, which can realize the smooth flipping of the workpiece at any angle, while simultaneously ensuring the assembly accuracy of the three-phase spacing and the efficiency of rapid disassembly and assembly.

[0022] This fixture is mainly composed of core components such as base 1, reducer drive assembly 2, bearing seat 3, output shaft 4, first fastening plate 5, rotating shaft 6, second fastening plate 7, support plate 8, locking component 9, top plate 10, and bottom plate 11. The base 1, serving as the supporting foundation for the entire fixture, is placed horizontally at the work station. The reducer drive assembly 2 is installed on one side of the base 1, and the bearing seat 3 is installed on the other side of the base 1. The reducer drive assembly 2 is fixedly connected to the first fastening plate 5 via the output shaft 4, and the bearing seat 3 is fixedly connected to the second fastening plate 7 via the rotating shaft 6. The first fastening plate 5 and the second fastening plate 7 are arranged in parallel relative to each other and are fixedly connected by the support plate 8, together forming a frame body that can rotate stably around the horizontal axis. The first fastening plate 5 and the second fastening plate 7, which are arranged in parallel relative to each other, clamp the insulating table in both the upper and lower directions to ensure the stability of the insulating table during the flipping process. The top plate 10 and the bottom plate 11 are detachably installed between the two fastening plates via the locking piece 9. The top plate 10 and the bottom plate 11 are provided with positioning holes 12 and pin holes 13 for precise positioning and upper and lower clamping and fixing of the insulating table 14.

[0023] The base 1 is constructed from heavy-duty steel welded into a rectangular frame structure, possessing high bending and torsional rigidity. It can withstand the dynamic and static loads during the flipping of the heavy insulating platform 14, preventing deformation of the tooling after long-term use and ensuring assembly accuracy. Support platforms 21 are fixedly installed on the top of both side frames of the base 1. These support platforms 21 are made of thick steel plates and are used to raise the installation height of the rotating mechanism, providing sufficient lower operating space for workpiece flipping. A reducer drive assembly 2 is fixedly installed on the top surface of one support platform 21, and a bearing seat 3 is fixedly installed on the top surface of the other support platform 21. The output rotation center of the reducer drive assembly 2 and the rotation center of the bearing seat 3 are strictly coaxial, ensuring smooth and unobstructed rotation and preventing uneven wear.

[0024] The reducer drive assembly 2 includes a reducer 23, a lead screw, and a handwheel 25. The handwheel 25 is located on the outside of the fixture for easy gripping and operation by the operator. The central shaft of the handwheel 25 is connected to the input end of the reducer 23 via the lead screw. The reducer 23 is a worm gear reducer with reverse self-locking characteristics, which can automatically lock the workpiece position at any rotation angle without the need for an additional locking mechanism. The output end of the reducer 23 is coaxially fixedly connected to the output shaft 4. The output shaft 4 extends horizontally toward the inside of the tooling, and its end is vertically fixed to the center position of the outer side wall of the first fastening plate 5. To enhance the connection strength, a number of reinforcing ribs 22 are provided between the side wall of the output shaft 4 and the outer side wall of the first fastening plate 5. Each reinforcing rib 22 is evenly distributed circumferentially along the central axis of the output shaft 4. One side of the reinforcing rib 22 is welded and fixed to the outer wall of the output shaft 4, and the other side is welded and fixed to the surface of the first fastening plate 5, forming a radial reinforcing structure, which effectively improves the shear and bending resistance of the connection part and avoids stress deformation at the connection between the output shaft 4 and the first fastening plate 5 when overloaded and overturned.

[0025] Correspondingly, a rolling bearing is installed inside the bearing housing 3, and the rotating shaft 6 is rotatably supported in the bearing housing 3 through the rolling bearing. The rotating shaft 6 also extends horizontally towards the inside of the tooling, and its end is vertically fixed to the center position of the outer side wall of the second fastening plate 7. The rotating shaft 6 is coaxial with the output shaft 4. Several reinforcing ribs 22 are also provided between the side wall of the rotating shaft 6 and the outer side wall of the second fastening plate 7. Each reinforcing rib 22 is evenly distributed circumferentially along the central axis of the rotating shaft 6. Its structure and arrangement are consistent with the reinforcing ribs 22 on the side of the first fastening plate 5, symmetrically strengthening the structural rigidity of the connection parts on both sides, ensuring that the two fastening plates remain parallel during rotation, and avoiding positioning displacement caused by uneven force on the workpiece.

[0026] Both the first snap-fit ​​plate 5 and the second snap-fit ​​plate 7 are rectangular plate structures, with their surfaces facing each other and arranged parallel to form the two side support walls of the rotating frame. A support plate 8 is provided between the first snap-fit ​​plate 5 and the second snap-fit ​​plate 7. The support plate 8 is located at the bottom of the frame and is used to assist in supporting the weight of the workpiece at the bottom. At the same time, it enhances the overall structural strength between the two snap-fit ​​plates, prevents relative deformation of the two snap-fit ​​plates during rotation, and ensures the overall dimensional stability of the frame. The support plate 8 includes a base plate 18 and extension plates 19. The base plate 18 is the middle main load-bearing section of the support plate 8. Extension plates 19 are integrally extended from both ends of the base plate 18. The two extension plates 19 are respectively attached and fixed to the lower inner side walls of the first snap-fit ​​plate 5 and the second snap-fit ​​plate 7, and can be fixed by welding or bolting. At least two reinforcing plates 20 are fixedly installed on the side wall of the base plate 18. The reinforcing plates 20 are set along the length of the base plate 18, and both ends of the reinforcing plates 20 extend to the side of the extension plate 19 to form a continuous reinforcing rib structure, which greatly improves the overall bending load-bearing capacity of the support plate 8, avoids bending deformation after bearing heavy workpieces for a long time, and ensures the structural stability and service life of the rotating frame.

[0027] Adapter plates 15 are fixedly installed at the upper and lower edges of both the first and second fastening plates 5 and 7, extending along the length of the fastening plates. Each adapter plate 15 has several screw holes 16 on its surface. Corresponding to the screw holes 16, the first and second fastening plates 5 and 7 have through-holes 17. Locking members 9 pass through the through-holes 17 from the outside of the fastening plate and are screwed into the screw holes 16 of the adapter plate 15, thus achieving a tight connection between the adapter plate 15 and the fastening plates. By replacing adapter plates 15 of different thicknesses, the installation distance between the top plate 10 and the bottom plate 11 can be flexibly adjusted to accommodate the clamping requirements of insulating platforms 14 of different thicknesses, improving the universal adaptability of the tooling. Simultaneously, the adapter plates 15, as vulnerable parts, can be replaced individually, reducing the long-term maintenance costs of the tooling.

[0028] The upper and lower parts between the first snap-fit ​​plate 5 and the second snap-fit ​​plate 7 are respectively detachably mounted with a top plate 10 and a bottom plate 11 via locking members 9. The bottom plate 11 is located at the bottom and serves as the planar bearing reference for the workpiece, while the top plate 10 is located at the top and serves as a clamping member. The two together form a closed clamping space for the insulating platform 14. The bottom plate 11 has a number of positioning holes 12 evenly distributed along its length. The spacing between any two adjacent positioning holes 12 is consistent, matching the standard three-phase phase spacing of the 126 GIS circuit breaker insulating platform. Each positioning hole 12 has a number of pin holes 13 evenly distributed around its periphery, and the positions of the pin holes 13 correspond one-to-one with the mounting holes on the bottom of the insulating platform 14. The structure of the top plate 10 corresponds to that of the bottom plate 11. Similarly, it has a number of positioning holes 12 evenly distributed along its length, and pin holes 13 are correspondingly provided around the periphery of the positioning holes 12. The pin holes 13 of the top plate 10 are aligned with the mounting holes on the top of the insulating platform 14. When the insulating platform 14 is placed on the base plate 11, its bottom holes are aligned with the pin holes 13 of the base plate 11. By inserting the pin connector into the pin holes 13, the insulating platform 14 can be precisely positioned in the horizontal direction, limiting its movement in the front-back and left-right directions. After the top plate 10 is closed, the pin holes 13 of the top plate 10 are aligned with the top holes of the insulating platform 14. Then, the top plate 10 is fastened to the two side transition plates 15 by the locking member 9, which can achieve the vertical clamping and all-round positioning of the insulating platform 14. No additional auxiliary fixtures are required during the clamping process. The positioning is automatically aligned by the hole-shaft cooperation of the pin holes 13, and the positioning accuracy is stable and controllable.

[0029] The structural design of this embodiment integrates the pin positioning and clamping structure into the rotatable frame, breaking the limitation that traditional tooling cannot simultaneously achieve flipping and positioning. On the one hand, the base plate 11 provides a stable planar bearing reference, which, together with the precise positioning of the pin hole 13, structurally ensures the assembly accuracy of the three-phase spacing of the insulating platform 14. During the entire flipping process, the relative position of the workpiece and the clamping plate is fixed, and no displacement or shifting occurs, significantly improving the consistency of product assembly. On the other hand, both the top plate 10 and the base plate 11 are detachable modular structures, which are fastened together on both sides by locking parts 9. The assembly and disassembly operations are centralized and the steps are simple, eliminating the need for additional auxiliary tooling such as strapping straps and external pressure plates. The assembly and disassembly time of a single workpiece is greatly shortened, making it suitable for the batch assembly operation requirements of the production line.

[0030] Example 2 This embodiment describes an assembly method for the insulation platform of a 126GIS circuit breaker based on the aforementioned circuit breaker insulation platform flipping fixture. Utilizing the fixture's rotating frame and pin-positioning clamping structure, it achieves a fully integrated operation encompassing "positioning and clamping—multi-angle flipping operation—rapid unloading," specifically including the following steps: S1. Fix the base 1 horizontally at the assembly work station and adjust the level of the base 1 to ensure that the tooling is not tilted. Install the reducer drive assembly 2 and bearing seat 3 on the support platforms 21 on both sides of the base 1 respectively. Calibrate the coaxiality of the output shaft 4 and the rotating shaft 6 to ensure that the rotation center is consistent. Fix the end of the output shaft 4 to the outer center of the first fastening plate 5 and the end of the rotating shaft 6 to the outer center of the second fastening plate 7. Weld reinforcing ribs 22 at the connection points on both sides to strengthen the structure. Fix the extension plates 19 at both ends of the support plate 8 to the lower part of the inner sidewall of the first fastening plate 5 and the second fastening plate 7 respectively, so that the base plate 18 is placed between the two fastening plates to form a rotating support frame that can rotate around the horizontal axis. Debug the self-locking function of the reducer 23 to confirm that the rotation is smooth and can be stably locked at any angle, and complete the pre-assembly of the tooling.

[0031] S2. Place the base plate 11 horizontally on the lower adapter plate 15 between the first fastening plate 5 and the second fastening plate 7. Adjust the position of the base plate 11 so that its length direction is perpendicular to the rotation axis and its two side edges are aligned with the fastening plates. Use the locking piece 9 to pass through the round hole 17 of the fastening plate and the screw hole 16 of the adapter plate 15 to fasten the base plate 11 to the two side adapter plates 15. Rely on the positioning holes 12 evenly distributed along the length direction on the base plate 11 to complete the installation reference alignment and ensure that the installation position accuracy of the base plate 11 meets the assembly requirements.

[0032] S3. Using a crane, lift the insulating platform 14 to a position directly above the base plate 11, and slowly lower the insulating platform 14 so that the corresponding holes on the bottom of the insulating platform 14 are aligned with the pin holes 13 around the positioning holes 12 on the base plate 11. Insert the pin connector into the aligned pin holes 13 to confine the insulating platform 14 to the base plate 11, thus completing the horizontal positioning constraint. After confirming that the insulating platform 14 is not offset or warped, perform the initial bolt tightening operation between the insulating platform 14 and the base plate 11.

[0033] S4. Hoist the top plate 10 over the insulating platform 14 and adjust its position so that the pin hole 13 on it is aligned with the corresponding hole on the top of the insulating platform 14. Insert the pin connector to complete the alignment of the top plate 10 and the insulating platform 14. Use the locking piece 9 to fasten the top plate 10 to the adapter plate 15 on both sides. The top plate 10 and the bottom plate 11 clamp and fix the insulating platform 14. After confirming that the clamping is firm and there is no looseness, the workpiece clamping is completed.

[0034] S5. The operator holds the handwheel 25 and slowly rotates it. The screw drive drives the reducer 23 to rotate, which in turn drives the first fastening plate 5 to rotate via the output shaft 4. Simultaneously, the support plate 8, the second fastening plate 7, the bottom plate 11, the insulating platform 14, and the top plate 10 are rotated smoothly around the axis of the rotating shaft 6. After rotating to the target working angle, the operator stops rotating the handwheel 25. The reducer 23 automatically locks the current angle based on its self-locking characteristic, and the corresponding assembly work can then be carried out, such as tightening the bottom bolts, pre-assembling the side components, and connecting the upper parts. After completing the work at a single angle, the operator can continue to rotate the handwheel 25 to adjust to the next working angle until all assembly processes are completed.

[0035] S6. After all assembly processes are completed, turn the handwheel 25 in the reverse direction to reset the workpiece to the initial horizontal angle; loosen the locking piece 9 at the upper adapter plate 15 in sequence, remove the top plate 10, and then pull out the pin connecting the insulating platform 14 and the bottom plate 11; use a crane to lift the assembled insulating platform assembly off the fixture as a whole and transfer it to the next process; after cleaning the surface of the fixture, the clamping operation of the next set of workpieces can be carried out. Each modular component of the fixture can be disassembled and stored separately, or the top plate 10 and bottom plate 11 of the corresponding specifications can be replaced to adapt to the assembly requirements of other types of workpieces.

[0036] Working principle The core working principle of this circuit breaker insulation platform flipping fixture is "enclosed rotating frame bearing + pin hole reference precise positioning + modular quick installation and quick disassembly". By deeply integrating the positioning clamping unit with the rotating flipping mechanism, the functional separation problem of "poor positioning when flipping" and "positioning reference cannot be flipped" in traditional fixtures is solved from the structural root.

[0037] During tooling operation, the base 1 and the two side support platforms 21 serve as the fixed bearing foundation. The reducer drive assembly 2 and the bearing seat 3 form a coaxial rotary support at both ends, driving the closed frame composed of the first fastening plate 5, the second fastening plate 7 and the support plate 8 in the middle to rotate as a whole. This rotary frame replaces the cantilever clamping structure on both sides of the traditional side clamping tooling, forming a closed-loop bearing system with stronger structural rigidity and better stability under heavy loads and overturning. It can effectively avoid the defects of cantilever structure being prone to deformation and uneven loading.

[0038] During the workpiece clamping stage, the base plate 11 serves as a unified planar positioning reference. The pin holes 13 arranged on it according to the standard phase spacing precisely match the mounting holes of the insulating platform 14, directly limiting all horizontal degrees of freedom of the workpiece through hole-shaft mating. Compared with the traditional sidewall clamping method, the positioning reference of this structure acts directly on the workpiece mounting surface, resulting in higher positioning accuracy and more reliable constraint. Furthermore, during bolt tightening and flipping, the workpiece remains relatively fixed to the base plate 11 and top plate 10, preventing any shifting or displacement due to force. This fundamentally ensures the assembly accuracy of the three-phase spacing and eliminates dimensional errors caused by manual alignment.

[0039] During the flipping operation, the handwheel 25 drives the worm gear reducer 23 to reduce speed and increase torque, causing the entire clamping frame and workpiece to flip synchronously and uniformly. The self-locking characteristic of the reducer 23 can stably lock at any angle, eliminating the need for repeated starting and stopping of the crane to adjust the angle. The entire flipping process is mechanized and controllable. This mode not only eliminates the safety hazards such as collisions with insulating parts and workpiece slippage caused by repeated crane lifting, but also significantly improves the efficiency of angle adjustment and operational safety, and reduces the labor intensity of operators.

[0040] During the assembly and disassembly phase, the top plate 10 and the bottom plate 11 are both centrally fixed by the locking parts 9 on both sides. The assembly and disassembly operations only require working on the locking parts 9 on both sides, and the pin holes 13 automatically align the parts, eliminating the need for repeated calibration of the workpiece position and significantly shortening the assembly and disassembly cycle of a single workpiece. At the same time, the modular top plate 10, bottom plate 11 and adapter plate 15 can be quickly replaced to adapt to different specifications of workpieces and meet the production needs of multi-variety batch assembly in the workshop, combining high precision, high efficiency and high versatility.

[0041] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A circuit breaker insulation platform flipping fixture, characterized in that, The device includes a base, on one side of which a speed reducer drive assembly is mounted, and on the other side of which a bearing seat is mounted. The speed reducer drive assembly is fixedly connected to a first fastening plate via an output shaft, and the bearing seat is fixedly connected to a second fastening plate via a rotating shaft. A support plate is provided between the first and second fastening plates. The top plate and the bottom plate are installed between the first and second fastening plates by locking components. A number of positioning holes are evenly distributed along the length of the top plate and the bottom plate, and a number of pin holes are evenly distributed around the positioning holes.

2. The circuit breaker insulation platform flipping fixture according to claim 1, characterized in that, The first and second fastening plates are fixedly mounted with adapter plates at both ends. The adapter plates have several screw holes, and the first and second fastening plates have round holes corresponding to the screw holes. The locking element is set by threading through the screw holes and round holes to connect the first fastening plate and the adapter plate.

3. The circuit breaker insulation platform flipping fixture according to claim 1, characterized in that, The spacing between any two adjacent positioning holes is the same.

4. The circuit breaker insulation platform flipping fixture according to claim 1, characterized in that, The support plate includes a base plate, and extension plates are provided at both ends of the base plate. The extension plates are fixedly installed on the side wall of the first or second fastening plate.

5. The circuit breaker insulation platform flipping fixture according to claim 4, characterized in that, At least two reinforcing plates are fixedly installed on the side wall of the base plate, and the extension plate extends to the side of the extension plate.

6. The circuit breaker insulation platform flipping fixture according to claim 1, characterized in that, The base is a rectangular frame. The reducer drive assembly is fixedly installed on the upper side of one side of the base via a support platform, and the bearing seat is fixedly installed on the upper side of the other side of the base via a support platform.

7. The circuit breaker insulation platform flipping fixture according to claim 1, characterized in that, The rotating shaft is vertically mounted on the second fastening plate, and a number of reinforcing ribs are provided between the side wall of the rotating shaft and the second fastening plate. The reinforcing ribs are evenly distributed circumferentially along the central axis of the rotating shaft.

8. The circuit breaker insulation platform flipping fixture according to claim 1, characterized in that, The output shaft is vertically mounted on the first fastening plate, and a number of reinforcing ribs are provided between the side wall of the output shaft and the first fastening plate. The reinforcing ribs are evenly distributed circumferentially along the central axis of the output shaft.

9. The circuit breaker insulation platform flipping fixture according to claim 1, characterized in that, The speed reducer drive assembly includes a speed reducer, which is connected to a handwheel via a lead screw.

10. An assembly method based on the circuit breaker insulation platform flipping fixture according to any one of claims 1-9, characterized in that, S1. Tooling body in place: Fix the base to the work station. The reducer drive assembly on one side of the base is connected to the first fastening plate through the output shaft. The bearing seat on the other side of the base is connected to the second fastening plate through the rotating shaft. The support plate is connected between the first fastening plate and the second fastening plate to form a rotatable flip support frame. S2. Place the base plate between the first and second fastening plates, and fix the base plate to the fastening plates on both sides using the locking device. Complete the installation and alignment by relying on the positioning holes arranged along the length of the base plate. S3. Place the insulating platform on the base plate, aligning the corresponding holes of the insulating platform with the pin holes around the positioning holes on the base plate, and use the pin connector to confine the insulating platform between the base plate and the two side fastening plates. S4. Place the top plate over the insulating platform, aligning the pin holes of the top plate with the upper part of the insulating platform. Secure the top plate to the first and second fastening plates using locking devices. The insulating platform is then clamped and fixed by the cooperation of the top plate and the bottom plate. S5. Control the reducer drive assembly, drive the first fastening plate to rotate via the output shaft, and simultaneously drive the support plate, the second fastening plate, the bottom plate, the insulating platform and the top plate to rotate around the bearing seat shaft to the target working angle, and lock it to complete the corresponding assembly process. S6. After all assembly processes are completed, the reducer drive assembly drives the workpiece to reset to the initial angle, loosens the locking parts, removes the top plate in sequence, takes out the assembled insulating platform assembly, and the tooling can enter the next set of assembly cycles.

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