Positioning tool for welding transformer oil tank and positioning method thereof

Abstract

This invention relates to the field of transformer tank technology and discloses a positioning fixture and method for welding transformer tanks. The fixture includes a processing table, a support rod fixedly connected to the bottom of the processing table, and a base fixedly connected to the bottom of the support rod. It also includes a positioning component, comprising an electrically operated telescopic frame. The lower surface of the electrically operated telescopic frame is fixedly connected to the surface of the processing table, and a connecting frame is fixedly connected to the top of the electrically operated telescopic frame. After placing the bottom shell of the transformer tank on top of the processing table, the positioning component moves towards the center of the processing table and contacts and presses against the surface of the bottom shell of the transformer tank, fixing it in place. When the side plate of the transformer tank is placed on top of the bottom shell, the surface of the side plate contacts the stabilizing component, which presses and fixes the side plate to the top of the bottom shell, improving the stability of the transformer tank during welding assembly. When the pressing component moves downwards, it contacts the top of the bottom shell.

Description

Technical Field

[0001] This invention relates to the field of transformer oil tank technology, specifically to a positioning fixture and positioning method for welding transformer oil tanks. Background Technology

[0002] The transformer oil tank is an important component of a transformer. Its main functions include holding the transformer body and transformer oil, and playing a role in heat dissipation, insulation protection, insulation drying, as well as serving as a base and transportation. Transformer oil tanks include barrel-type oil tanks and bell-type oil tanks. Each type has its own advantages and disadvantages and is suitable for transformers of different capacities and requirements.

[0003] After the transformer tank is assembled, it needs to be fixed by welding. During the assembly process, the transformer tank needs to be supported and positioned manually. When welding the transformer tank, workers need to ensure its stability to avoid affecting the production quality. However, the production volume of transformer tanks is large, and workers inevitably encounter problems such as large gaps when supporting and positioning the transformer tanks for a long time. If the transformer tank is not completely fitted, it will tilt during welding, thus affecting the production quality of the transformer tank. Summary of the Invention

[0004] The purpose of this invention is to provide a positioning fixture and positioning method for welding transformer oil tanks, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a positioning fixture and method for welding transformer oil tanks, comprising a processing table, a support rod fixedly connected to the bottom of the processing table, and a base fixedly connected to the bottom of the support rod, and further comprising:

[0007] The positioning component includes an electric telescopic frame, the lower surface of which is fixedly connected to the surface of the processing table, a connecting frame fixedly connected to the top of the electric telescopic frame, an elastic rod fixedly connected to the end of the connecting frame away from the electric telescopic frame, and a connecting plate fixedly connected to the bottom of the elastic rod.

[0008] An extrusion component, comprising a telescopic rectangular frame, the end of which is fixedly connected to the bottom of a processing table, a circular hole frame fixedly connected to the surface of the telescopic rectangular frame, a movable rod slidably connected to the inner wall of the circular hole frame, and the top of the movable rod fixedly connected to the surface of a connecting frame.

[0009] The stabilizing component includes a pole, a fixing frame is fixedly connected to the upper surface of the pole, and a contact plate is fixedly connected to the surface of the fixing frame.

[0010] Furthermore, the positioning component includes a plumb line, the top of which is fixedly connected to the bottom of the processing table, a lifting ring is slidably connected to the surface of the plumb line, an inclined plate is hinged to the surface of the lifting ring, a bent frame is hinged to the end of the inclined plate away from the lifting ring, a sliding frame is fixedly connected to the end of the bent frame, and a positioning plate is fixedly connected to the bottom of the processing table.

[0011] A pressure plate is fixedly connected to the end of the bending frame away from the sliding frame, and the end of the connecting plate away from the elastic rod is fixedly connected to the upper surface of the lifting ring.

[0012] Furthermore, the connecting frame is located above the processing table, the end of the bending frame away from the sliding frame extends above the processing table, and the bottom of the pressure plate contacts the top of the processing table.

[0013] Furthermore, the number of positioning plates is set to four, and the four positioning plates are arranged in a circle around the vertical rod. The inner wall of the sliding frame is slidably connected to the surface of the positioning plates, and the end of the inclined plate away from the lifting ring is inclined upward.

[0014] Furthermore, the extrusion component includes a spring rod, the top of which is fixedly connected to the bottom of a movable rod, a mounting plate fixedly connected to the bottom of the spring rod, an expansion plate sleeved on the surface of the mounting plate, a grooved rod hinged to the end of the expansion plate away from the mounting plate, a roller rotatably connected to the inner wall of the grooved rod, an elastic sheet fixedly connected to the surface of the expansion plate, and a push plate fixedly connected to the surface of the grooved rod.

[0015] The end of the elastic sheet away from the expansion plate is fixedly connected to the bottom of the mounting plate. A pressing rod is fixedly connected to the bottom of the mounting plate, and a pressing disc is fixedly connected to the bottom of the pressing rod.

[0016] Furthermore, the center of the telescopic rectangular frame is located above the processing table, the end of the moving rod extends to the outer end of the circular hole frame, the elastic rod is located below the circular hole frame, and four expansion plates are provided. The four expansion plates are arranged circumferentially around the mounting plate, and the ends of the four expansion plates away from the mounting plate are arranged away from each other. The lower surface of the roller extends to the outer end of the circular groove rod.

[0017] Furthermore, the stabilizing component includes a synchronizing plate, the bottom of which is fixedly connected to the top of the circular groove rod, a through-hole rod fixedly connected to the surface of the synchronizing plate, a circular rod slidably connected to the inner wall of the through-hole rod, a support plate fixedly connected to the end of the circular rod, and a spring fixedly connected to the surface of the support plate.

[0018] The end of the spring away from the support plate is fixedly connected to the synchronization plate, the end of the round rod away from the support plate is fixedly connected to a triangular plate, and the bottom of the upright is fixedly connected to the surface of the bending frame.

[0019] Furthermore, the contact plate and the triangular plate correspond to each other, the end of the round rod extends to the outer end of the through-hole rod, the spring is located at the center of the surface of the support plate, and the top of the upright rod and the top of the synchronization plate are horizontally set.

[0020] Furthermore, a positioning method for a positioning fixture used in welding transformer tanks includes the following steps:

[0021] S1: After placing the bottom shell of the transformer oil tank on the top of the processing table, start the positioning component to move towards the center of the processing table and contact the surface of the bottom shell of the transformer oil tank to press and fix it. When the side plate of the transformer oil tank is placed on the top of the bottom shell, the surface of the side plate will contact the stabilizing component. Use the stabilizing component to press and fix the side plate on the top of the bottom shell.

[0022] S2: When the elastic rod moves downward, it pushes the lifting ring to slide downward on the surface of the vertical rod through the connecting plate. When the lifting ring slides downward, it pushes the sliding frame to slide on the surface of the positioning plate through the inclined plate. The sliding frame pushes the pressure plate to move towards the center of the processing table through the bending frame and squeezes and fixes the bottom shell.

[0023] S3: As the expansion plate moves, the grooved rod pushes the roller to contact the top of the bottom shell and expands at the top of the bottom shell. When the grooved rod moves, it pushes the push plate to contact the surface of the side plate. The push plate is used to press and fix the side plate to the surface of the pressure plate. The push plate and the pressure plate cooperate to position the side plate.

[0024] S4: When the bending frame moves, the connection between the upright and the fixed frame pushes the contact plate to contact the surface of the side plate. The synchronous plate will push the spring to move synchronously as the circular groove rod moves. When the spring moves, it pushes the circular rod to move through the support plate. When the circular rod moves, it pushes the triangular plate to contact the surface of the side plate. The contact plate and the triangular plate squeeze and fix the side plate.

[0025] The present invention has the following beneficial effects:

[0026] This invention places the bottom shell of the transformer tank on top of the processing table, then activates the positioning component to move towards the center of the processing table and presses and fixes it to the surface of the bottom shell. When the side plate of the transformer tank is placed on top of the bottom shell, the surface of the side plate will contact the stabilizing component, which presses and fixes the side plate to the top of the bottom shell, improving the stability of the transformer tank during welding and assembly. When the pressing component moves downward, it will contact the top of the bottom shell and expand to contact the surface of the side plate, further improving the stability of the transformer tank during welding and preventing the transformer tank from tilting during welding.

[0027] When the electric telescopic frame moves downward, it pushes the elastic rod downward through the connecting frame. As the elastic rod moves downward, it pushes the lifting ring to slide downward on the surface of the vertical rod through the connecting plate. As the lifting ring slides downward, it pushes the sliding frame to slide on the surface of the positioning plate through the inclined plate. The sliding frame pushes the pressure plate towards the center of the processing table through the bending frame and squeezes and fixes the bottom shell. The bottom shell will contact the lower surface of the pressure plate, and the lower surface of the side plate will contact the upper surface of the pressure plate, further improving the stability of the side plate and the bottom shell during welding and installation.

[0028] When the connecting frame moves downward, it pushes the elastic rod downward via a moving rod. As the elastic rod moves downward, it pushes the expansion plate downward via a mounting plate. The grooved rod, along with the expansion plate, pushes the roller to contact the top of the bottom shell and expands at the top of the bottom shell. As the grooved rod moves, it pushes the push plate to contact the surface of the side plate. The push plate presses and fixes the side plate to the surface of the pressure plate. The push plate and pressure plate work together to position the side plate, preventing tilting during welding. After welding the side plate to the bottom shell, an electric telescopic frame pushes the telescopic rectangular frame upward. When the extrusion plate moves above the side plate, the top cover of the transformer tank is placed on top of the side plate. At this point, the electric telescopic frame is activated to push the connecting frame downward. The connecting frame then pushes the extrusion plate to contact the top cover and presses and fixes it, improving the convenience of welding and assembling the transformer tank.

[0029] In this invention, when the bending frame moves, the connection between the upright and the fixed frame pushes the contact plate to contact the surface of the side plate. The synchronous plate moves synchronously with the movement of the circular groove rod, pushing the spring to move synchronously. When the spring moves, it pushes the circular rod to move through the support plate. When the circular rod moves, it pushes the triangular plate to contact the surface of the side plate. The contact plate and the triangular plate compress and fix the side plate, improving the stability of the side plate during welding. When the triangular plate is compressed against the side plate, it will contact the surface of the synchronous plate. At this time, the triangular plate and the push plate are horizontally aligned. The triangular plate and the push plate cooperate to compress and fix the side plate.

[0030] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the base structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the overall structure of the positioning component of the present invention;

[0035] Figure 4 This is another structural schematic diagram of the positioning component of the present invention;

[0036] Figure 5 This is a schematic diagram of the overall structure of the extrusion component of the present invention;

[0037] Figure 6 This is another structural schematic diagram of the extrusion component of the present invention;

[0038] Figure 7 This is a schematic diagram of the overall structure of the stabilizing component of the present invention;

[0039] Figure 8 This is another structural schematic diagram of the stabilizing component of the present invention;

[0040] Figure 9 This is a schematic diagram of the process of the present invention.

[0041] The attached diagram lists the components represented by each number as follows:

[0042] In the diagram: 1. Processing table; 2. Support rod; 3. Base; 4. Positioning component; 5. Extrusion component; 6. Stabilizing component; 10. Electric telescopic frame; 11. Connecting frame; 12. Elastic rod; 13. Linkage plate; 14. Bending frame; 15. Pressure plate; 16. Positioning plate; 17. Sliding frame; 18. Vertical rod; 19. Lifting ring; 20. Inclined plate; 30. Moving rod; 31. Circular hole frame; 32. Elastic rod; 33. Telescopic rectangular frame; 34. Mounting plate; 35. Expansion plate; 36. Circular groove rod; 37. Elastic sheet; 38. Roller; 39. Push plate; 40. Extrusion rod; 41. Extrusion disc; 50. Vertical pole; 51. Fixed frame; 52. Contact plate; 53. Synchronization plate; 54. Circular rod; 55. Through-hole rod; 56. Support plate; 57. Spring; 58. Triangular plate. Detailed Implementation

[0043] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Please see Figures 1-9 As shown, the present invention is a positioning fixture and positioning method for welding transformer oil tanks, including a processing table 1, a support rod 2 fixedly connected to the bottom of the processing table 1, a base 3 fixedly connected to the bottom of the support rod 2, and further including:

[0045] Positioning component 4 includes an electric telescopic frame 10. The lower surface of the electric telescopic frame 10 is fixedly connected to the surface of the processing table 1. A connecting frame 11 is fixedly connected to the top of the electric telescopic frame 10. An elastic rod 12 is fixedly connected to the end of the connecting frame 11 away from the electric telescopic frame 10. A linkage plate 13 is fixedly connected to the bottom of the elastic rod 12.

[0046] The extrusion component 5 includes a telescopic rectangular frame 33. The end of the telescopic rectangular frame 33 is fixedly connected to the bottom of the processing table 1. A circular hole frame 31 is fixedly connected to the surface of the telescopic rectangular frame 33. A moving rod 30 is slidably connected to the inner wall of the circular hole frame 31. The top of the moving rod 30 is fixedly connected to the surface of the connecting frame 11.

[0047] The stabilizing component 6 includes a vertical rod 50. After the bottom shell of the transformer oil tank is placed on the top of the processing table 1, the positioning component 4 is activated and moves towards the center of the processing table 1, and contacts the surface of the bottom shell of the transformer oil tank to press and fix it. When the side plate of the transformer oil tank is placed on the top of the bottom shell, the surface of the side plate will contact the stabilizing component 6. The stabilizing component 6 is used to press and fix the side plate at the top of the bottom shell, which improves the stability of the transformer oil tank during welding and assembly. When the pressing component 5 moves downward, it will contact the top of the bottom shell, and expand at the top of the bottom shell to contact the surface of the side plate to press and fix it, further improving the stability of the transformer oil tank during welding and preventing the transformer oil tank from tilting during welding. A fixing frame 51 is fixedly connected to the upper surface of the vertical rod 50, and a contact plate 52 is fixedly connected to the surface of the fixing frame 51.

[0048] The positioning component 4 includes a vertical rod 18, the top of which is fixedly connected to the bottom of the processing table 1. A lifting ring 19 is slidably connected to the surface of the vertical rod 18. An inclined plate 20 is hinged to the surface of the lifting ring 19. A bent frame 14 is hinged to the end of the inclined plate 20 away from the lifting ring 19. A sliding frame 17 is fixedly connected to the end of the bent frame 14. A positioning plate 16 is fixedly connected to the bottom of the processing table 1.

[0049] A pressure plate 15 is fixedly connected to the end of the bending frame 14 away from the sliding frame 17, and the end of the connecting plate 13 away from the elastic rod 12 is fixedly connected to the upper surface of the lifting ring 19.

[0050] The connecting frame 11 is located above the processing table 1. When the electric telescopic frame 10 is activated and moves downward, the electric telescopic frame 10 pushes the elastic rod 12 downward through the connecting frame 11. When the elastic rod 12 moves downward, it pushes the lifting ring 19 to slide downward on the surface of the vertical rod 18 through the connecting plate 13. When the lifting ring 19 slides downward, it pushes the sliding frame 17 to slide on the surface of the positioning plate 16 through the inclined plate 20. The sliding frame 17 pushes the pressure plate 15 towards the center of the processing table 1 through the bending frame 14 and squeezes and fixes the bottom shell. The bottom shell will contact the lower surface of the pressure plate 15, and the lower surface of the side plate will contact the upper surface of the pressure plate 15, further improving the stability of the side plate and the bottom shell during welding and installation. The end of the bending frame 14 away from the sliding frame 17 extends to the top of the processing table 1, and the bottom of the pressure plate 15 contacts the top of the processing table 1.

[0051] There are four positioning plates 16, which are arranged circumferentially around the vertical rod 18. The inner wall of the sliding frame 17 is slidably connected to the surface of the positioning plates 16, and the end of the inclined plate 20 away from the lifting ring 19 is inclined upward.

[0052] The extrusion component 5 includes a spring rod 32, the top of which is fixedly connected to the bottom of the moving rod 30. A mounting plate 34 is fixedly connected to the bottom of the spring rod 32. An expansion plate 35 is sleeved on the surface of the mounting plate 34. A grooved rod 36 is hinged to the end of the expansion plate 35 away from the mounting plate 34. A roller 38 is rotatably connected to the inner wall of the grooved rod 36. An elastic sheet 37 is fixedly connected to the surface of the expansion plate 35. A push plate 39 is fixedly connected to the surface of the grooved rod 36.

[0053] The end of the elastic sheet 37 away from the expansion plate 35 is fixedly connected to the bottom of the mounting plate 34. The bottom of the mounting plate 34 is fixedly connected to the extrusion rod 40, and the bottom of the extrusion rod 40 is fixedly connected to the extrusion disc 41.

[0054] The center of the telescopic rectangular frame 33 is located above the processing table 1. When the connecting frame 11 moves downward, the moving rod 30 pushes the elastic rod 32 downward. When the elastic rod 32 moves downward, the mounting plate 34 pushes the expansion plate 35 downward. As the expansion plate 35 moves, the grooved rod 36 pushes the roller 38 to contact the top of the bottom shell and expands at the top of the bottom shell. When the grooved rod 36 moves, it pushes the push plate 39 to contact the surface of the side plate. The push plate 39 is used to press and fix the side plate to the surface of the pressure plate 15. The push plate 39 and the pressure plate 15 cooperate to position the side plate and prevent tilting when the side plate is welded to the bottom shell. After the side plate is welded to the bottom shell, the electric telescopic frame 10 is used to push... The telescopic rectangular frame 33 moves upward. When the extrusion plate 41 moves above the side plate, the top cover of the transformer oil tank is placed on the top of the side plate. At this time, the electric telescopic frame 10 is activated to push the connecting frame 11 downward. The connecting frame 11 can push the extrusion plate 41 to contact the top cover and extrude and fix it, improving the convenience of welding and assembling the transformer oil tank. The end of the moving rod 30 extends to the outer end of the circular hole frame 31. The elastic rod 32 is located below the circular hole frame 31. There are four expansion plates 35. The four expansion plates 35 are arranged circumferentially around the mounting plate 34. The ends of the four expansion plates 35 away from the mounting plate 34 are arranged away from each other. The lower surface of the roller 38 extends to the outer end of the circular groove rod 36.

[0055] The stabilizing component 6 includes a synchronization plate 53. The bottom of the synchronization plate 53 is fixedly connected to the top of the circular groove rod 36. A through-hole rod 55 is fixedly connected to the surface of the synchronization plate 53. A circular rod 54 is slidably connected to the inner wall of the through-hole rod 55. A support plate 56 is fixedly connected to the end of the circular rod 54. A spring 57 is fixedly connected to the surface of the support plate 56.

[0056] The end of spring 57 away from support plate 56 is fixedly connected to synchronous plate 53, the end of round rod 54 away from support plate 56 is fixedly connected to triangular plate 58, and the bottom of upright rod 50 is fixedly connected to the surface of bending frame 14.

[0057] The contact plate 52 and the triangular plate 58 correspond to each other. When the bending frame 14 of the present invention moves, the contact plate 52 is pushed to contact the surface of the side plate through the connection between the upright rod 50 and the fixed frame 51. The synchronous plate 53 will push the spring 57 to move synchronously with the movement of the circular groove rod 36. When the spring 57 moves, it pushes the circular rod 54 to move through the support plate 56. When the circular rod 54 moves, it pushes the triangular plate 58 to contact the surface of the side plate. The contact plate 52 and the triangular plate 58 squeeze and fix the side plate, improving the stability of the side plate during welding. When the triangular plate 58 is squeezed in contact with the side plate, it will contact the surface of the synchronous plate 53. At this time, the triangular plate 58 and the push plate 39 are horizontally corresponding. The triangular plate 58 and the push plate 39 cooperate to squeeze and fix the side plate. The end of the circular rod 54 extends to the outer end of the through hole rod 55. The spring 57 is located at the center of the surface of the support plate 56. The top of the upright rod 50 and the top of the synchronous plate 53 are horizontally set.

[0058] A positioning method for a positioning fixture used in welding transformer oil tanks includes the following steps:

[0059] S1: After placing the bottom shell of the transformer oil tank on the top of the processing table 1, start the positioning component 4 to move towards the center of the processing table 1 and contact the surface of the bottom shell of the transformer oil tank to press and fix it. When the side plate of the transformer oil tank is placed on the top of the bottom shell, the surface of the side plate will contact the stabilizing component 6. Use the stabilizing component 6 to press and fix the side plate at the top of the bottom shell.

[0060] S2: When the elastic rod 12 moves downward, it pushes the lifting ring 19 to slide downward on the surface of the vertical rod 18 through the connecting plate 13. When the lifting ring 19 slides downward, it pushes the sliding frame 17 to slide on the surface of the positioning plate 16 through the inclined plate 20. The sliding frame 17 pushes the pressure plate 15 to move towards the center of the processing table 1 through the bending frame 14 and squeezes and fixes the bottom shell.

[0061] S3: As the expansion plate 35 moves, the grooved rod 36 pushes the roller 38 to contact the top of the bottom shell and expands at the top of the bottom shell. When the grooved rod 36 moves, it pushes the push plate 39 to contact the surface of the side plate. The push plate 39 is used to press and fix the side plate on the surface of the pressure plate 15. The push plate 39 and the pressure plate 15 cooperate to position the side plate.

[0062] S4: When the bending frame 14 moves, the connection between the upright 50 and the fixed frame 51 pushes the contact plate 52 to contact the surface of the side plate. The synchronous plate 53 will push the spring 57 to move synchronously with the movement of the circular groove rod 36. When the spring 57 moves, it pushes the circular rod 54 to move through the support plate 56. When the circular rod 54 moves, it pushes the triangular plate 58 to contact the surface of the side plate. The side plate is pressed and fixed by the contact plate 52 and the triangular plate 58.

[0063] In use, after placing the bottom shell of the transformer tank on top of the processing table 1, the positioning component 4 is activated to move towards the center of the processing table 1 and press and fix it against the surface of the bottom shell. When the side plate of the transformer tank is placed on top of the bottom shell, the surface of the side plate will contact the stabilizing component 6. The stabilizing component 6 presses and fixes the side plate to the top of the bottom shell, improving the stability of the transformer tank during welding and assembly. When the pressing component 5 moves downward, it will contact the top of the bottom shell and expand at the top of the bottom shell to contact and press and fix the side plate, further improving the stability of the transformer tank during welding and preventing the transformer tank from tilting during welding. When the electric telescopic frame 10 is activated to move downward, the electric telescopic frame... 10. The connecting frame 11 pushes the elastic rod 12 downward. When the elastic rod 12 moves downward, it pushes the lifting ring 19 to slide downward on the surface of the vertical rod 18 through the connecting plate 13. When the lifting ring 19 slides downward, it pushes the sliding frame 17 to slide on the surface of the positioning plate 16 through the inclined plate 20. The sliding frame 17 pushes the pressure plate 15 towards the center of the processing table 1 through the bending frame 14 and squeezes and fixes the bottom shell. The bottom shell will contact the lower surface of the pressure plate 15, and the lower surface of the side plate will contact the upper surface of the pressure plate 15, further improving the stability of the side plate and the bottom shell during welding and installation. When the connecting frame 11 moves downward, it pushes the elastic rod 32 downward through the moving rod 30. When the elastic rod 32 moves downward, it pushes the expansion plate 35 downward through the mounting plate 34. As the expansion plate 35 moves, the grooved rod 36 pushes the roller 38 to contact the top of the bottom shell and expands at the top of the bottom shell. During movement, the grooved rod 36 pushes the push plate 39 to contact the surface of the side plate, using the push plate 39 to press and fix the side plate onto the surface of the pressure plate 15. The push plate 39 and pressure plate 15 work together to position the side plate, preventing tilting during welding. After welding, the electric telescopic frame 10 pushes the telescopic rectangular frame 33 upwards. When the extrusion plate 41 moves above the side plate, the top cover of the transformer tank is placed on top of the side plate. At this time, the electric telescopic frame 10 is activated to push the connecting frame 11 downwards, allowing the connecting frame 11 to push the extrusion plate 41 into contact with the top cover and fix it. The compression fixing improves the convenience of welding and assembling the transformer tank. When the bending frame 14 moves, the connection between the upright 50 and the fixed frame 51 pushes the contact plate 52 to contact the surface of the side plate. The synchronous plate 53 will push the spring 57 to move synchronously with the movement of the circular groove rod 36. When the spring 57 moves, it pushes the circular rod 54 to move through the support plate 56. When the circular rod 54 moves, it pushes the triangular plate 58 to contact the surface of the side plate. The contact plate 52 and the triangular plate 58 compress and fix the side plate, improving the stability of the side plate during welding. When the triangular plate 58 is compressed and contacts the side plate, it will contact the surface of the synchronous plate 53. At this time, the triangular plate 58 and the push plate 39 are horizontally aligned. The triangular plate 58 and the push plate 39 cooperate to compress and fix the side plate.

[0064] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A positioning fixture for welding transformer tanks, comprising a processing table (1), wherein a support rod (2) is fixedly connected to the bottom of the processing table (1), and a base (3) is fixedly connected to the bottom of the support rod (2), characterized in that, Also includes: Positioning component (4), the positioning component (4) includes an electric telescopic frame (10), the lower surface of the electric telescopic frame (10) is fixedly connected to the surface of the processing table (1), the top of the electric telescopic frame (10) is fixedly connected to a connecting frame (11), the end of the connecting frame (11) away from the electric telescopic frame (10) is fixedly connected to an elastic rod (12), and the bottom of the elastic rod (12) is fixedly connected to a connecting plate (13). The extrusion component (5) includes a telescopic rectangular frame (33), the end of which is fixedly connected to the bottom of the processing table (1), and a circular hole frame (31) is fixedly connected to the surface of the telescopic rectangular frame (33). A moving rod (30) is slidably connected to the inner wall of the circular hole frame (31), and the top of the moving rod (30) is fixedly connected to the surface of the connecting frame (11). The stabilizing component (6) includes a pole (50), a fixing frame (51) is fixedly connected to the upper surface of the pole (50), and a contact plate (52) is fixedly connected to the surface of the fixing frame (51). The extrusion component (5) includes a spring rod (32), the top of which is fixedly connected to the bottom of a moving rod (30), and a mounting plate (34) is fixedly connected to the bottom of the spring rod (32). An expansion plate (35) is sleeved on the surface of the mounting plate (34). A grooved rod (36) is hinged to one end of the expansion plate (35) away from the mounting plate (34). A roller (38) is rotatably connected to the inner wall of the grooved rod (36). An elastic sheet (37) is fixedly connected to the surface of the expansion plate (35), and a push plate (39) is fixedly connected to the surface of the grooved rod (36). The end of the elastic sheet (37) away from the expansion plate (35) is fixedly connected to the bottom of the mounting plate (34), and the bottom of the mounting plate (34) is fixedly connected to the extrusion rod (40), and the bottom of the extrusion rod (40) is fixedly connected to the extrusion disc (41). The center of the telescopic rectangular frame (33) is located above the processing table (1), the end of the moving rod (30) extends to the outer end of the circular hole frame (31), the elastic rod (32) is located below the circular hole frame (31), and there are four expansion plates (35). The four expansion plates (35) are arranged circumferentially around the mounting plate (34), and the ends of the four expansion plates (35) away from the mounting plate (34) are arranged away from each other. The lower surface of the roller (38) extends to the outer end of the circular groove rod (36). The stabilizing component (6) includes a synchronizing plate (53), the bottom of which is fixedly connected to the top of a grooved rod (36), a through-hole rod (55) is fixedly connected to the surface of the synchronizing plate (53), a round rod (54) is slidably connected to the inner wall of the through-hole rod (55), a support plate (56) is fixedly connected to the end of the round rod (54), and a spring (57) is fixedly connected to the surface of the support plate (56). The end of the spring (57) away from the support plate (56) is fixedly connected to the synchronous plate (53), the end of the round rod (54) away from the support plate (56) is fixedly connected to the triangular plate (58), and the bottom of the upright (50) is fixedly connected to the surface of the bending frame (14). The contact plate (52) and the triangular plate (58) correspond to each other. The end of the round rod (54) extends to the outer end of the through-hole rod (55). The spring (57) is located at the center of the surface of the support plate (56). The top of the upright rod (50) and the top of the synchronization plate (53) are set horizontally.

2. The positioning fixture for welding transformer oil tanks according to claim 1, characterized in that: The positioning component (4) includes a vertical rod (18), the top of which is fixedly connected to the bottom of the processing table (1), a lifting ring (19) is slidably connected to the surface of the vertical rod (18), an inclined plate (20) is hinged to the surface of the lifting ring (19), a bent frame (14) is hinged to the end of the inclined plate (20) away from the lifting ring (19), a sliding frame (17) is fixedly connected to the end of the bent frame (14), and a positioning plate (16) is fixedly connected to the bottom of the processing table (1). The end of the bending frame (14) away from the sliding frame (17) is fixedly connected to a pressure plate (15), and the end of the connecting plate (13) away from the elastic rod (12) is fixedly connected to the upper surface of the lifting ring (19).

3. A positioning fixture for welding transformer oil tanks according to claim 2, characterized in that: The connecting frame (11) is located above the processing table (1), the end of the bending frame (14) away from the sliding frame (17) extends to the top of the processing table (1), and the bottom of the pressure plate (15) contacts the top of the processing table (1).

4. A positioning fixture for welding transformer oil tanks according to claim 3, characterized in that: The number of positioning plates (16) is four. The four positioning plates (16) are arranged in a circle with the vertical rod (18) as the center. The inner wall of the sliding frame (17) is slidably connected to the surface of the positioning plates (16). The end of the inclined plate (20) away from the lifting ring (19) is inclined upward.

5. A positioning method for a positioning fixture for welding transformer oil tanks according to claim 4, characterized in that, Includes the following steps: S1: After placing the bottom shell of the transformer oil tank on the top of the processing table (1), start the positioning component (4) to move towards the center of the processing table (1) and contact the surface of the bottom shell of the transformer oil tank to press and fix it. When the side plate of the transformer oil tank is placed on the top of the bottom shell, the surface of the side plate will contact the stabilizing component (6). Use the stabilizing component (6) to press and fix the side plate at the top of the bottom shell. S2: When the elastic rod (12) moves downward, it pushes the lifting ring (19) to slide downward on the surface of the vertical rod (18) through the connecting plate (13). When the lifting ring (19) slides downward, it pushes the sliding frame (17) to slide on the surface of the positioning plate (16) through the inclined plate (20). The sliding frame (17) pushes the pressure plate (15) to move towards the center of the processing table (1) through the bending frame (14) and squeezes and fixes the bottom shell. S3: The grooved rod (36) pushes the roller (38) to contact the top of the bottom shell as the expansion plate (35) moves and expands at the top of the bottom shell. When the grooved rod (36) moves, it pushes the push plate (39) to contact the surface of the side plate. The push plate (39) is used to press and fix the side plate to the surface of the pressure plate (15). The push plate (39) and the pressure plate (15) cooperate to position the side plate. S4: When the bending frame (14) moves, the connection between the upright (50) and the fixed frame (51) pushes the contact plate (52) to contact the surface of the side plate. The synchronous plate (53) will push the spring (57) to move synchronously with the movement of the circular groove rod (36). When the spring (57) moves, it pushes the circular rod (54) to move through the support plate (56). When the circular rod (54) moves, it pushes the triangular plate (58) to contact the surface of the side plate. The side plate is pressed and fixed by the contact plate (52) and the triangular plate (58).

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