Transformer coil adjusting and pressing mechanism

Abstract

This invention discloses a transformer coil adjustment and clamping mechanism, relating to the technical field of transformer processing equipment. It includes a support frame and an insulating column rotatably connected inside the support frame and housing the coil. A first cylinder, a sliding plate, and a hollow column are connected to the side of the support frame. A lever-swing structure is formed by a limiting column and a rotating rod. The rotating rod drives the telescopic column and connecting column to rotate via a telescopic rod. A cam fixed at the end of the connecting column rotates and presses down on the sliding column, causing the arc-shaped pressure plate at the bottom of the sliding column to radially and synchronously clamp the outer surface of the coil. Furthermore, a second cylinder drives a sliding frame to move within a groove, allowing for flexible adjustment of the clamping area, which is achieved through a push rod, handle, and pressure ring. This invention solves the problems of asynchronous coil clamping and easy loosening at the ends in existing technologies, achieving multi-point adaptive synchronous uniform clamping of the coil while ensuring comprehensive radial and axial clamping, significantly improving the processing and shaping quality and stability of transformer coils.

Description

Technical Field

[0001] This invention relates to the field of transformer processing equipment technology, specifically to a transformer coil adjustment and clamping mechanism. Background Technology

[0002] Transformers play a vital role in power systems, and the winding and shaping quality of transformer coils directly determines the transformer's performance and service life. After the transformer coils are manufactured, a clamping mechanism is usually used to compact and shape the coils from all angles to eliminate internal gaps and prevent structural loosening during subsequent operation.

[0003] Existing coil clamping equipment typically uses multiple independent hydraulic cylinders or air cylinders to directly push and clamp the outer wall of the coil from different directions. Although this method is simple in structure, in actual operation, it is difficult to ensure absolute synchronization of the actions and complete balance of pressure among multiple independent drive sources. This can easily lead to excessive local stress on the coil, causing deformation or damage to the insulation layer.

[0004] Furthermore, existing clamping mechanisms often only shape the radial outer surface of the coil, neglecting the need for fastening at the axial ends of the coil. Without end face limiting and clamping, the coil is prone to axial displacement at both ends when radially compressed, resulting in insufficient overall coil compaction and poor compaction and shaping effect. To address this issue, the transformer coil adjustment clamping mechanism provides a synchronous clamping mechanism that can be used simultaneously on both the upper and lower sides, thereby improving the practicality of the transformer coil adjustment clamping mechanism. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a transformer coil adjustment and clamping mechanism, which solves the problems of existing transformer coil clamping equipment, such as difficulty in achieving multi-position adaptive synchronous uniform clamping of the outer surface of the coil and insufficient coil compaction due to lack of effective fastening of the axial end.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a transformer coil adjustment and clamping mechanism, comprising: a support frame and an insulating column rotatably connected inside the support frame, wherein a coil is sleeved on the outside of the insulating column, and a connecting frame is fixedly connected to the side of the support frame; The feature is that it further includes a synchronous pressing mechanism, which includes a first cylinder, a sliding plate, a hollow column, a connecting plate, a first connecting frame, a rotating rod, a limiting column, a telescopic rod, a sliding frame, a cam, a connecting column, a telescopic column, a second connecting frame, a sliding column, and an arc-shaped pressure plate; The first cylinder is fixedly connected to the side of the support frame, and the output end of the first cylinder is fixedly connected to the slide plate. The slide plate is slidably connected to the inside of the connecting frame. The hollow column is fixedly connected to the side of the slide plate. The connecting plate is fixedly connected to one end of the hollow column. The first connecting frame is fixedly connected to the side of the connecting plate. The rotating rod is hinged to the inside of the first connecting frame. The limiting column is fixedly connected to the side of the connecting frame. The end of the telescopic rod is slidably fitted inside the rotating rod. The second connecting frame is hinged to the end of the telescopic rod. The telescopic column is fixedly connected to the side of the second connecting frame. The connecting column is slidably connected to the outside of the telescopic column. The sliding frame is slidably connected to the side of the support frame. The cam is rotatably connected to the inside of the sliding frame. The cam is fixedly connected to the end of the connecting column. The sliding column is slidably connected to the inside of the sliding frame. The top end of the sliding column abuts against the bottom of the cam. The arc-shaped pressure plate is fixedly connected to the bottom end of the sliding column.

[0007] Preferably, a limiting groove is formed inside the rotating rod, and the limiting post passes through and is slidably connected inside the limiting groove.

[0008] Preferably, the synchronous pressing mechanism further includes a connecting ring and a first spring. The connecting ring is fixedly connected to the outside of the slide column, and the first spring is sleeved on the outside of the slide column, with both ends of the first spring fixedly connected to the slide frame and the connecting ring, respectively.

[0009] Preferably, the transformer coil adjusting and clamping mechanism further includes a fixing plate, a push rod, and a pressure ring. The fixing plate is fixedly connected inside the support frame, the push rod is slidably connected inside the fixing plate and the support frame, and the connecting plate and the hollow column are sleeved and slidably connected outside the push rod. The pressure ring is fixedly connected to the end of the push rod.

[0010] Preferably, the push rod has an internal threaded connection to a threaded rod, the end of which is fixedly connected to a handle, the hollow column has an axially continuous interior, and the threaded rod passes through the interior of the slide plate, the hollow column, and the connecting plate.

[0011] Preferably, a second spring is sleeved on the outside of the push rod, and the two ends of the second spring abut against the side of the connecting plate and the side of the fixing plate, respectively.

[0012] Preferably, a retaining ring is fixedly connected to the outside of the insulating post, and the retaining ring and the pressure ring are located on opposite sides of the coil, respectively.

[0013] Preferably, the support frame has a sliding groove on its side, and a slider is slidably connected inside the sliding groove. The end of the slider is fixedly connected to the side of the sliding frame.

[0014] Preferably, a second cylinder is fixedly connected to the side of the support frame, and a connecting rod is fixedly connected to the output end of the second cylinder. The end of the connecting rod is fixedly connected to the side of the slide frame and the side of the slider, respectively.

[0015] Preferably, the bottom of the arc-shaped pressure plate is machined into a concave arc shape, and the concave arc surface of the arc-shaped pressure plate is in contact with the outer surface of the coil.

[0016] Working principle: When the start-up operation begins, coil 3 is sleeved outside insulating column 2 and supported stably by support frame 1. When it is necessary to press the outer surface of coil 3, the first cylinder 5 is activated. The output end of the first cylinder 5 pushes the slide plate 6 to slide inside the connecting frame 4. The slide plate 6 drives the hollow column 7 and connecting plate 8 to move. The connecting plate 8 slides outside the push rod 25 and simultaneously compresses the second spring 27. When the connecting plate 8 moves to the left, it simultaneously drives the first connecting frames 9 located on the upper and lower sides to move. The first connecting frames 9 on the upper and lower sides push the corresponding rotating rods 10. Under the guidance and limitation of the limiting column 11 and the limiting groove 12, the rotating rods 10 on the upper and lower sides are respectively moved. Simultaneously, the moving rod 10 deflects and swings. The swing of the rotating rod 10 pulls the corresponding second connecting frame 18 through the telescopic rod 13, which in turn converts into torque to drive the upper and lower telescopic columns 17 and connecting columns 16 to rotate synchronously. The rotation of the connecting column 16 drives the cam 15 inside the upper and lower sliding frames 14 to rotate synchronously. The protruding part of the cam 15 presses the corresponding position sliding column 19, forcing the sliding column 19 to compress the first spring 22 and slide inward. The arc-shaped pressure plate 20 at the bottom of the upper and lower sliding columns 19 moves towards each other and is tightly pressed onto the outer surface of the coil 3, thereby realizing the linkage and synchronous clamping and compaction of the upper and lower surfaces of the coil 3. After the clamping action is completed, the first cylinder 5 is controlled to retract and the first spring 22 is unloaded and rebounds, causing the arc-shaped pressure plate 20 to reset. When it is necessary to clamp other axial positions of the coil 3, the second cylinder 30 is activated. The output end of the second cylinder 30 pushes the connecting rod 31 and simultaneously drives the upper and lower sliding frames 14 and the slider 32 to move laterally along the corresponding sliding groove 33. At this time, the connecting column 16 slides axially on the outer wall of the telescopic column 17 to compensate for the displacement difference. After the sliding frame 14 moves to the new position, the first cylinder 5 is activated again to repeat the synchronous clamping action, achieving the effect of flexibly adjusting the radial clamping area without interfering with the rotational transmission. When it is necessary to press the two ends of the coil 3, turn the handle 24 to drive the threaded rod 23 to rotate. The rotation of the threaded rod 23 is converted into a linear thrust of the push rod 25. The push rod 25 moves and pushes the pressure ring 28 to slide on the outer wall of the insulating column 2 until the pressure ring 28 cooperates with the left retaining ring 29 to clamp and fix the two ends of the coil 3, thereby preventing the coil from axially loosening and falling off, and achieving the effect of all-round pressing and adjustment.

[0017] This invention provides a transformer coil adjustment and clamping mechanism. It has the following beneficial effects: 1. This invention solves the problem in the prior art of cumbersome pressing operation on the outer surface of transformer coils and difficulty in achieving adaptive synchronous and uniform pressing at multiple positions by setting a synchronous pressing mechanism composed of a first cylinder, a sliding plate, a rotating rod, a cam and an arc-shaped pressure plate. It achieves the effect of smoothly converting linear driving force into linkage rotational downward pressure, and realizing synchronous and uniform compaction of the coil radially at multiple points.

[0018] 2. This invention solves the problem in the prior art that the pressing area is fixed and it is difficult to cover the entire surface of the coil by setting a sliding groove, a slider and a transverse translation structure driven by a second cylinder on the side of the support frame, and a connecting column slidably connected to the outside of the telescopic column. It achieves the effect of flexibly adjusting the radial pressing position laterally without interfering with the rotational pressing transmission, so as to achieve the effect of fully covering and compacting the outer surface of the coil.

[0019] 3. This invention solves the problem of easy loosening and lack of effective fixing structure at the axial end of transformer coils in the prior art by setting a push rod, pressure ring, retaining ring and threaded rod with internal thread connection. It achieves the effect of applying stable clamping force to both ends of the coil, preventing the coil from falling off and deforming axially and completing all-round fastening. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the connecting frame structure of the present invention; Figure 3 This is a schematic diagram of the skateboard structure of the present invention; Figure 4 This is a schematic diagram of the rotating rod structure of the present invention; Figure 5 This is a schematic diagram of the threaded rod structure of the present invention; Figure 6 This is a schematic diagram of the sliding frame structure of the present invention; Figure 7 This is a schematic diagram of the arc-shaped pressure plate structure of the present invention; Figure 8 This is a schematic diagram of the pressure ring structure of the present invention.

[0021] The components are as follows: 1. Support frame; 2. Insulating column; 3. Coil; 4. Connecting frame; 5. First cylinder; 6. Slide plate; 7. Hollow column; 8. Connecting plate; 9. First connecting frame; 10. Rotating rod; 11. Limiting column; 12. Limiting groove; 13. Telescopic rod; 14. Slide frame; 15. Cam; 16. Connecting column; 17. Telescopic column; 18. Second connecting frame; 19. Slide column; 20. Arc-shaped pressure plate; 21. Connecting ring; 22. First spring; 23. Threaded rod; 24. Handle; 25. Push rod; 26. Fixing plate; 27. Second spring; 28. Pressure ring; 29. ​​Retaining ring; 30. Second cylinder; 31. Connecting rod; 32. Slider; 33. Slide groove. Detailed Implementation

[0022] The technical solutions in 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.

[0023] Example: This invention provides a transformer coil adjustment and clamping mechanism, which aims to solve the problems in the prior art where transformer coil clamping equipment is difficult to achieve adaptive synchronous uniform clamping of the outer surface of the coil at multiple positions, and the lack of effective fastening of the axial end results in insufficient coil compaction.

[0024] Please see the appendix Figure 1 -Appendix Figure 8 The present invention provides a transformer coil adjustment and clamping mechanism including a support frame 1 and an insulating column 2 rotatably connected inside the support frame 1. A coil 3 is sleeved on the outside of the insulating column 2. A connecting frame 4 is fixedly connected to the side of the support frame 1. The support frame 1 provides basic structural support and carries peripheral components. The insulating column 2 carries and positions the coil 3 to provide a stable internal support core.

[0025] To solve the above-mentioned technical problems, the core of the technical solution of this embodiment is that the transformer coil adjustment and pressing mechanism also includes a synchronous pressing mechanism. The synchronous pressing mechanism includes a first cylinder 5, a sliding plate 6, a hollow column 7, a connecting plate 8, a first connecting frame 9, a rotating rod 10, a limiting column 11, a telescopic rod 13, a sliding frame 14, a cam 15, a connecting column 16, a telescopic column 17, a second connecting frame 18, a sliding column 19, and an arc-shaped pressing plate 20.

[0026] The first cylinder 5 is fixedly connected to the side of the support frame 1. The output end of the first cylinder 5 is fixedly connected to the slide plate 6. The slide plate 6 is slidably connected inside the connecting frame 4. The hollow column 7 is fixedly connected to the side of the slide plate 6. The connecting plate 8 is fixedly connected to the end of the hollow column 7. The first connecting frame 9 is fixedly connected to the side of the connecting plate 8. The rotating rod 10 is hinged inside the first connecting frame 9. The limiting post 11 is fixedly connected to the side of the connecting frame 4. The end of the telescopic rod 13 is slidably fitted inside the rotating rod 10. The second connecting frame 18 is hinged to the end of the telescopic rod 13. The telescopic column 17 is fixedly connected to the side of the second connecting frame 18. The connecting post 16 is slidably connected to the outside of the telescopic column 17. The sliding frame 14 is slidably connected to the side of the support frame 1. The cam 15 is rotatably connected inside the sliding frame 14. The cam 15 is fixedly connected to the connecting post. At end 16, the sliding column 19 is slidably connected inside the sliding frame 14, with the top of the sliding column 19 abutting against the bottom of the cam 15. The arc-shaped pressure plate 20 is fixedly connected to the bottom of the sliding column 19. The first cylinder 5 provides linear drive thrust. The slide plate 6, hollow column 7, and connecting plate 8 smoothly transmit the thrust of the first cylinder 5 to the first connecting frame 9. The rotating rod 10, in conjunction with the limiting column 11, forms a lever swing transmission structure and cleverly converts the linear thrust into swing pull. The telescopic rod 13 is pulled and drives the second connecting frame 18 to deflect, which is converted into the overall rotational torque of the telescopic column 17 and the connecting column 16. The connecting column 16 drives the cam 15 to rotate and presses down the sliding column 19 inside the sliding frame 14. The sliding column 19 finally drives the arc-shaped pressure plate 20 to complete the radial adaptive synchronous pressing action of the coil 3 to ensure uniform force on the outer surface.

[0027] Based on the above embodiments, the following preferred technical solutions are also included: In order to accurately guide and limit the swing trajectory of the rotating rod 10, a limiting groove 12 is opened inside the rotating rod 10, and a limiting post 11 is inserted and slidably connected inside the limiting groove 12. The limiting post 11 and the limiting groove 12 cooperate with each other to ensure that the rotating rod 10 can stably and accurately swing with lever deflection when subjected to linear thrust and prevent lateral displacement. In order to give the arc-shaped pressure plate 20 an automatic reset function after the pressure is released, the synchronous pressing mechanism also includes a connecting ring 21 and a first spring 22. The connecting ring 21 is fixedly connected to the outside of the slide column 19, and the first spring 22 is sleeved on the outside of the slide column 19, with the two ends of the first spring 22 being fixedly connected to the slide frame 14 and the connecting ring 21 respectively. When the cam 15 rotates to release the pressure on the slide column 19, the first spring 22 pulls the slide column 19 upward through the connecting ring 21 and drives the arc-shaped pressure plate 20 to quickly reset and disengage from the surface of the coil 3. To achieve the purpose of laterally pressing and fixing the end of coil 3, the transformer coil adjustment and pressing mechanism also includes a fixing plate 26, a push rod 25, and a pressure ring 28. The fixing plate 26 is fixedly connected inside the support frame 1. The push rod 25 is slidably connected inside the fixing plate 26 and the support frame 1. The connecting plate 8 and the hollow column 7 are sleeved and slidably connected outside the push rod 25. The pressure ring 28 is fixedly connected to the end of the push rod 25. A retaining ring 29 is fixedly connected to the outside of the insulating column 2. The retaining ring 29 and the pressure ring 28 are located on both sides of the coil 3. The pressure ring 28 is pushed by the push rod 25 to apply a fastening force in the axial end face direction of the coil 3 and cooperates with the retaining ring 29 on the other side to completely clamp the coil 3 and prevent axial loosening and falling off. In order to provide the end face clamping driving force and ensure the self-locking adjustment, the push rod 25 is internally threaded with a threaded rod 23, and the end of the threaded rod 23 is fixedly connected with a handle 24. The hollow column 7 is axially through, and the threaded rod 23 passes through the slide plate 6, the hollow column 7 and the connecting plate 8. Rotating the handle 24 drives the threaded rod 23 to rotate and forces the push rod 25 to move in a stable linear translation feed by relying on the threaded engagement. In order to provide buffering and reduce the impact of the mechanism when the first cylinder drives the connecting plate 8 to move, a second spring 27 is sleeved on the outside of the push rod 25. The two ends of the second spring 27 abut against the side of the connecting plate 8 and the side of the fixed plate 26, respectively. The second spring 27 stores force under the pressure of the connecting plate 8 and absorbs the vibration energy of the mechanism. The second spring 27 is used to provide elastic buffering and reset assistance during the movement of the connecting plate 8, and absorb the impact of movement. In order for the synchronous pressing mechanism to fully cover and compact different axial positions on the outer surface of the coil 3, a sliding groove 33 is provided on the side of the support frame 1. A slider 32 is slidably connected inside the sliding groove 33. The end of the slider 32 is fixedly connected to the side of the slide frame 14. A second cylinder 30 is fixedly connected to the side of the support frame 1. A connecting rod 31 is fixedly connected to the output end of the second cylinder 30. The end of the connecting rod 31 is fixedly connected to the side of the slide frame 14 and the side of the slider 32 respectively. The second cylinder 30 pushes the connecting rod 31 to drive the slide frame 14 to move laterally along the sliding groove 33 to compensate for alignment and adapt to the needs of different pressing areas. To improve the tightness and uniform force distribution, the bottom of the arc-shaped pressure plate 20 is processed into an inward arc shape, and the inward arc surface of the arc-shaped pressure plate 20 is in contact with the outer surface of the coil 3.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transformer coil adjusting and clamping mechanism, comprising: The support frame (1) and the insulating column (2) rotatably connected inside the support frame (1) are provided with a coil (3) on the outside of the insulating column (2) and a connecting frame (4) is fixedly connected to the side of the support frame (1). The feature is that it further includes a synchronous pressing mechanism, which includes a first cylinder (5), a sliding plate (6), a hollow column (7), a connecting plate (8), a first connecting frame (9), a rotating rod (10), a limiting column (11), a telescopic rod (13), a sliding frame (14), a cam (15), a connecting column (16), a telescopic column (17), a second connecting frame (18), a sliding column (19), and an arc-shaped pressure plate (20). The first cylinder (5) is fixedly connected to the side of the support frame (1), and the output end of the first cylinder (5) is fixedly connected to the slide plate (6). The slide plate (6) is slidably connected to the inside of the connecting frame (4). The hollow column (7) is fixedly connected to the side of the slide plate (6). The connecting plate (8) is fixedly connected to one end of the hollow column (7). The first connecting frame (9) is fixedly connected to the side of the connecting plate (8). The rotating rod (10) is hinged to the inside of the first connecting frame (9). The limiting column (11) is fixedly connected to the side of the connecting frame (4). The end of the telescopic rod (13) is slidably fitted inside the rotating rod (10). The second connecting frame (18) is hinged to the end of the telescopic rod (13), the telescopic column (17) is fixedly connected to the side of the second connecting frame (18), the connecting column (16) is slidably connected to the outside of the telescopic column (17), the sliding frame (14) is slidably connected to the side of the support frame (1), the cam (15) is rotatably connected to the inside of the sliding frame (14), the cam (15) is fixedly connected to the end of the connecting column (16), the sliding column (19) is slidably connected to the inside of the sliding frame (14), the top of the sliding column (19) abuts against the bottom of the cam (15), and the arc-shaped pressure plate (20) is fixedly connected to the bottom of the sliding column (19).

2. The transformer coil adjusting and clamping mechanism according to claim 1, characterized in that, The rotating rod (10) has a limiting groove (12) inside, and the limiting post (11) passes through and is slidably connected inside the limiting groove (12).

3. The transformer coil adjusting and clamping mechanism according to claim 1, characterized in that, The synchronous pressing mechanism further includes a connecting ring (21) and a first spring (22). The connecting ring (21) is fixedly connected to the outside of the slide column (19), and the first spring (22) is sleeved on the outside of the slide column (19). The two ends of the first spring (22) are fixedly connected to the slide frame (14) and the connecting ring (21) respectively.

4. The transformer coil adjusting and clamping mechanism according to claim 1, characterized in that, The transformer coil adjustment and clamping mechanism further includes a fixed plate (26), a push rod (25), and a pressure ring (28). The fixed plate (26) is fixedly connected inside the support frame (1). The push rod (25) is slidably connected inside the fixed plate (26) and the support frame (1). The connecting plate (8) and the hollow column (7) are sleeved and slidably connected outside the push rod (25). The pressure ring (28) is fixedly connected to the end of the push rod (25).

5. A transformer coil adjusting and clamping mechanism according to claim 4, characterized in that, The push rod (25) is internally threaded with a threaded rod (23), and the end of the threaded rod (23) is fixedly connected with a handle (24). The interior of the hollow column (7) is axially continuous, and the threaded rod (23) passes through the interior of the slide plate (6), the hollow column (7) and the connecting plate (8).

6. A transformer coil adjusting and clamping mechanism according to claim 4, characterized in that, The push rod (25) is fitted with a second spring (27), and the two ends of the second spring (27) abut against the side of the connecting plate (8) and the side of the fixing plate (26), respectively.

7. A transformer coil adjusting and clamping mechanism according to claim 4, characterized in that, A retaining ring (29) is fixedly connected to the outside of the insulating column (2), and the retaining ring (29) and the pressure ring (28) are located on both sides of the coil (3).

8. A transformer coil adjusting and clamping mechanism according to claim 1, characterized in that, The support frame (1) has a sliding groove (33) on its side, and a slider (32) is slidably connected inside the sliding groove (33). The end of the slider (32) is fixedly connected to the side of the sliding frame (14).

9. A transformer coil adjusting and clamping mechanism according to claim 8, characterized in that, A second cylinder (30) is fixedly connected to the side of the support frame (1), and a connecting rod (31) is fixedly connected to the output end of the second cylinder (30). The end of the connecting rod (31) is fixedly connected to the side of the slide frame (14) and the side of the slider (32) respectively.

10. A transformer coil adjusting and clamping mechanism according to claim 1, characterized in that, The bottom of the arc-shaped pressure plate (20) is processed into an inward arc shape, and the inward arc-shaped surface of the arc-shaped pressure plate (20) is in contact with the outer surface of the coil (3).

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