A transformer coil clamping tool

Abstract

The utility model provides a kind of transformer coil clamping tool, comprising: at least two clamping components, clamping component includes: first pressing plate;At least two telescopic parts, one end of telescopic part is connected with first pressing plate, telescopic part is telescopically arranged along vertical direction;Second pressing plate, second pressing plate is connected with the other end of telescopic part, second pressing plate is spaced apart with first pressing plate along the extension direction of telescopic part, first pressing plate and second pressing plate are respectively arranged on the two sides of transformer coil, to be used for the axial compression of transformer coil;By setting first pressing plate and second pressing plate cooperation telescopic telescopic part, adjustable clamping space is formed;The scheme solves the problem that the gap exists between pressing plate and coil end face due to the size limitation of fixed hole of traditional clamping tool, and realizes adaptive clamping of different axial height coils by telescopic adjustment, eliminates the tedious operation of filling gap by using gasket.

Description

Technical Field

[0001] This utility model relates to the field of transformer manufacturing technology, specifically to a transformer coil clamping fixture. Background Technology

[0002] In the manufacturing process of power transformers, the coil is the core electromagnetic component. Its winding quality directly determines the electrical performance, mechanical strength, and operational reliability of the transformer. To ensure that the coil maintains geometric stability, tight interlayer structure, and no loosening or deformation during subsequent drying and pressing processes, specialized clamping fixtures are required for effective fixation and constraint. This is especially true for large-capacity, high-voltage transformers, where the coils are large, have high axial height, and high conductor tension, placing higher demands on the clamping structure. Currently, the traditional coil clamping fixtures commonly used in the industry are mostly simple pressure plates and telescopic rods. The coil end face is pressed by the upper and lower pressure plates, and finally fixed by pins to complete the clamping of the coil. However, during use, because the fixing hole size between the telescopic rods is fixed, gaps may exist between the upper and lower pressure plates on the end face of the coil. Additional shims are needed to fill the gaps to achieve the effect of pressing the end face of the coil. However, the gap size is not fixed, and shims of different thicknesses are required for coils with different axial heights, making the operation cumbersome.

[0003] Therefore, existing technologies need further development. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a transformer coil clamping fixture to solve the problem in the related technology where, during use, the fixed hole size between the telescopic rods results in a gap between the upper and lower pressure plates on the end face of the pressure ring. This requires additional shims to fill the gap in order to achieve the effect of pressing the end face of the pressure ring. However, the gap size is not fixed and shims of different thicknesses are required for coils with different axial heights, leading to cumbersome operation.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: a transformer coil clamping fixture is provided, comprising: at least two clamping assemblies, each clamping assembly comprising: a first pressure plate; at least two telescopic members, one end of which is connected to the first pressure plate and is telescopically extruded along the vertical direction; a second pressure plate, which is connected to the other end of the telescopic member and is spaced apart from the first pressure plate along the extension direction of the telescopic member. The first and second pressure plates are respectively disposed on both sides of the transformer coil for axial clamping of the transformer coil.

[0006] Furthermore, the telescopic component includes: an inner telescopic rod extending vertically, having multiple first through holes perpendicular to the vertical direction, the multiple first through holes being spaced apart along the extension direction of the inner telescopic rod; and an outer telescopic rod movably disposed within the outer telescopic rod, the inner telescopic rod having second through holes perpendicular to the vertical direction, the multiple second through holes being spaced apart along the extension direction of the outer telescopic rod; when the inner telescopic rod moves to a certain position such that any one of its first through holes aligns with a second through hole on the outer telescopic rod, a fixing component can pass through the first through hole and the second through hole to fix the inner telescopic rod and the outer telescopic rod relative to each other.

[0007] Furthermore, it also includes at least two fine-tuning components, each of which is set in correspondence with each clamping component. The fine-tuning components include: a threaded rod that extends vertically and is threadedly engaged with the first pressure plate; and a pressure block located on the side of the first pressure plate near the transformer coil, with the threaded rod rotatably connected to the pressure block.

[0008] Furthermore, the fine-tuning component also includes two limiting plates, which are respectively spaced apart on the first pressure plate; the pressure block has two limiting grooves, which are respectively movably arranged relative to the two limiting plates.

[0009] Furthermore, the fine-tuning component also includes a handheld part, which is located at the end of the threaded rod away from the pressure block.

[0010] Furthermore, it also includes two first reinforcing plates, which are disposed on the side of the first pressure plate away from the transformer coil; and two second reinforcing plates, one side of which is connected to the inner telescopic rod; and adjacent sides of which are connected to the first pressure plate.

[0011] Furthermore, it also includes two third reinforcing plates, which are disposed on the side of the second pressure plate away from the transformer coil; and two fourth reinforcing plates, one side of which is connected to the outer telescopic rod; and adjacent sides of which are connected to the second pressure plate.

[0012] Furthermore, the fixing element is a pin located between two fourth reinforcing plates; it also includes a limiting component, which includes a U-shaped element with a limiting space for accommodating and restricting the end of the pin to move, while the U-shaped element engages with the second pressure plate to fix its own position.

[0013] Further, the U-shaped component includes: a first crossbar, a second crossbar, the second crossbar being spaced apart from the first crossbar, the first crossbar and the second crossbar being located on both sides of the pin end to restrict the pin end from disengaging; a vertical plate extending in a vertical direction; the vertical plate being connected to the first crossbar and the second crossbar respectively; a horizontal plate connected to the vertical plate, the horizontal plate being spaced apart from the first crossbar and the second crossbar along the extending direction of the vertical plate; the horizontal plate being located on the side of the second pressure plate away from the transformer coil, and the horizontal plate abutting against the second pressure plate; wherein, the vertical plate, the horizontal plate, and the first crossbar and the second crossbar form a limiting space.

[0014] Furthermore, the limiting assembly also includes a limiting bolt, which is threadedly connected to the U-shaped part. When the limiting bolt abuts against the second pressure plate, it fixes the U-shaped part.

[0015] Beneficial effects: 1. By setting a first pressure plate and a second pressure plate in conjunction with a telescopic component, an adjustable clamping space is formed. This solution solves the problem of gaps between the pressure plate and the coil end face caused by the size limitation of the fixing hole in traditional clamping fixtures. Through telescopic adjustment, adaptive clamping of coils with different axial heights is achieved, eliminating the cumbersome operation of filling gaps with shims.

[0016] 2. By setting up a nested structure of inner and outer telescopic rods, and cooperating with multiple sets of first and second through holes, multi-level adjustment of the telescopic component length is achieved; this solution provides a precise length positioning function, ensures the accuracy of clamping height through hole alignment, and provides a reliable fixing effect through mechanical interlocking.

[0017] 3. By setting up a fine-tuning component consisting of a threaded rod and a pressure block, the clamping force can be precisely adjusted. This solution can make precise micron-level adjustments on the basis of coarse adjustment of the telescopic component, completely eliminating the residual gap between the pressure plate and the coil end face, and ensuring the clamping effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the transformer coil clamping fixture used in this embodiment of the utility model; Figure 2 This is a partial structural schematic diagram of the transformer coil clamping fixture used in an embodiment of this utility model.

[0019] The above figures include the following reference numerals: 1. First pressure plate; 2. Second pressure plate; 3. Inner telescopic rod; 4. First through hole; 5. Outer telescopic rod; 6. Second through hole; 7. Fine-tuning component; 8. Threaded rod; 9. Pressure block; 10. Limiting plate; 11. Limiting groove; 12. Handheld part; 13. First reinforcing plate; 14. Second reinforcing plate; 15. Third reinforcing plate; 16. Fourth reinforcing plate; 17. Pin; 18. Limiting component; 19. U-shaped part; 20. First horizontal bar; 21. Second horizontal bar; 22. Vertical plate; 23. Horizontal plate; 24. Limiting bolt. Detailed Implementation

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

[0021] According to an embodiment of this utility model, a transformer coil clamping fixture is provided. Please refer to [link / reference]. Figures 1 to 2 The device includes at least two clamping assemblies, each clamping assembly comprising: a first pressure plate 1; at least two telescopic members, one end of which is connected to the first pressure plate 1 and is telescopically extruded in the vertical direction; and a second pressure plate 2, which is connected to the other end of the telescopic members and is spaced apart from the first pressure plate 1 along the extension direction of the telescopic members. The first pressure plate 1 and the second pressure plate 2 are respectively disposed on both sides of the transformer coil for axial clamping of the transformer coil.

[0022] By adopting the above technical solution, an adjustable clamping space is formed by setting a first pressure plate 1 and a second pressure plate 2 in conjunction with a telescopic component. This solution solves the problem of gaps between the pressure plate and the coil end face caused by the size limitation of the fixing hole in traditional clamping fixtures. Through telescopic adjustment, adaptive clamping of coils with different axial heights is achieved, eliminating the cumbersome operation of filling gaps with shims.

[0023] Please refer to Figure 1The telescopic component includes: an inner telescopic rod 3, which extends vertically and has multiple first through holes 4, the extension direction of which is perpendicular to the vertical direction, and the multiple first through holes 4 are spaced apart along the extension direction of the inner telescopic rod 3; and an outer telescopic rod 5, in which the inner telescopic rod 3 is movably disposed vertically, and the outer telescopic rod 5 has second through holes 6, the extension direction of which is perpendicular to the vertical direction, and the multiple second through holes 6 are spaced apart along the extension direction of the outer telescopic rod 5; when the inner telescopic rod 3 moves to a certain position such that any one of its first through holes 4 aligns with a second through hole 6 on the outer telescopic rod 5, a fixing member can pass through the first through hole 4 and the second through hole 6 to fix the inner telescopic rod 3 and the outer telescopic rod 5 relative to each other.

[0024] By adopting the above technical solution, and by setting a nested structure of inner telescopic rod 3 and outer telescopic rod 5, and cooperating with multiple sets of first through holes 4 and second through holes 6, multi-level adjustment of the length of the telescopic component is realized; this solution provides a precise length positioning function, ensures the accuracy of clamping height through hole alignment, and provides a reliable fixing effect through mechanical interlocking.

[0025] Please refer to Figure 1 and Figure 2 It also includes at least two fine-tuning components 7, each fine-tuning component 7 being set in correspondence with each clamping component. The fine-tuning component 7 includes: a threaded rod 8, which extends vertically and is threadedly engaged with the first pressure plate 1; and a pressure block 9, which is located on the side of the first pressure plate 1 near the transformer coil, with the threaded rod 8 rotatably connected to the pressure block 9.

[0026] By adopting the above technical solution and setting the fine adjustment component 7 consisting of the threaded rod 8 and the pressure block 9, the clamping force can be finely adjusted. This solution can make precise micron-level adjustments on the basis of coarse adjustment of the telescopic component, completely eliminating the residual gap between the pressure plate and the coil end face, and ensuring the tightness and uniformity of clamping.

[0027] Please refer to Figure 2 The fine-tuning component 7 also includes two limiting plates 10, which are respectively spaced apart on the first pressure plate 1; the pressure block 9 has two limiting grooves 11, which are respectively movably arranged relative to the two limiting plates 10.

[0028] By adopting the above technical solution, and by setting the cooperation between the limiting plate 10 and the limiting groove 11, the movement of the pressure block 9 is precisely guided; this solution prevents the pressure block 9 from rotating or tilting during the adjustment process, ensuring that the pressure block 9 always moves perpendicular to the coil end face, and ensuring the uniformity of pressure distribution.

[0029] Please refer to Figure 2The fine-tuning component 7 also includes a hand grip 12, which is located at the end of the threaded rod 8 away from the pressure block 9.

[0030] By adopting the above technical solution, a hand-held part 12 is provided at the end of the threaded rod 8, providing a convenient point of force application for the operator.

[0031] Please refer to Figure 2 It also includes two first reinforcing plates 13, which are disposed on the side of the first pressure plate 1 away from the transformer coil; two second reinforcing plates 14, one side of which is connected to the inner telescopic rod 3; and adjacent sides of which are connected to the first pressure plate 1.

[0032] By adopting the above technical solution and setting the first reinforcing plate 13 and the second reinforcing plate 14, the structural strength of the connection between the first pressure plate 1 and the inner telescopic rod 3 is enhanced; this solution effectively disperses the stress generated during the clamping process and prevents deformation of the connection part.

[0033] Please refer to Figure 2 It also includes two third reinforcing plates 15, which are disposed on the side of the second pressure plate 2 away from the transformer coil; two fourth reinforcing plates 16, one side of which is connected to the outer telescopic rod 5; and adjacent sides of which are connected to the second pressure plate 2.

[0034] By adopting the above technical solution, and by setting the third reinforcing plate 15 and the fourth reinforcing plate 16, additional reinforcement is provided for the connection between the second pressure plate 2 and the outer telescopic rod 5.

[0035] Please refer to Figure 2 The fastener is a pin 17, which is located between two fourth reinforcing plates 16; it also includes a limiting component 18, which includes a U-shaped part 19, which has a limiting space for accommodating and restricting the end of the pin 17 to move, while the U-shaped part 19 engages with the second pressure plate 2 to fix its own position.

[0036] By adopting the above technical solution and setting the limiting component 18 composed of U-shaped parts 19, reliable anti-detachment protection is provided for the pin 17 when it is not in use; this solution effectively prevents the pin 17 from accidentally falling off during transportation.

[0037] Please refer to Figure 2The U-shaped component 19 includes: a first horizontal bar 20, a second horizontal bar 21, the second horizontal bar 21 being spaced apart from the first horizontal bar 20, the first horizontal bar 20 and the second horizontal bar 21 being located on both sides of the end of the pin 17 to restrict the end of the pin 17 from coming out; a vertical plate 22 extending in the vertical direction; the vertical plate 22 being connected to the first horizontal bar 20 and the second horizontal bar 21 respectively; a horizontal plate 23 connected to the vertical plate 22, the horizontal plate 23 being spaced apart from the first horizontal bar 20 and the second horizontal bar 21 along the extending direction of the vertical plate 22; the horizontal plate 23 being located on the side of the second pressure plate 2 away from the transformer coil, and the horizontal plate 23 abutting against the second pressure plate 2; wherein, the vertical plate 22, the horizontal plate 23, and the first horizontal bar 20 and the second horizontal bar 21 form a limiting space.

[0038] By adopting the above technical solution, the U-shaped part 19 is designed as an integral structure including the first crossbar 20, the second crossbar 21, the vertical plate 22 and the horizontal plate 23, forming a multi-directional limiting function; this solution constrains the pin 17 from multiple angles, preventing the axial movement of the pin 17 and limiting its radial displacement.

[0039] Please refer to Figure 2 The limiting assembly 18 also includes a limiting bolt 24, which is threadedly connected to the U-shaped part 19. When the limiting bolt 24 abuts against the second pressure plate 2, it fixes the U-shaped part 19.

[0040] By adopting the above technical solution, and by setting the limit bolt 24 to be threadedly engaged with the U-shaped part 19, detachable fixing is achieved. This solution enables the U-shaped part 19 to be installed and removed quickly, which not only ensures the stability during fixing, but also facilitates the installation and removal of the pin 17, thus improving the convenience of use.

[0041] Working principle: First, based on the axial height of the transformer coil, the inner telescopic rod 3 is adjusted within the outer telescopic rod 5. When a first through hole 4 on the inner telescopic rod 3 aligns with a second through hole 6 on the outer telescopic rod 5, the limiting bolt 24 is removed, the U-shaped piece 19 is taken out, and the pin 17 is engaged. Then, the pin 17 is inserted to achieve initial height fixation. Subsequently, by rotating the handle 12 of each fine-tuning component 7, the threaded rod 8 is driven to rotate relative to the first pressure plate 1, causing the pressure block 9 to be in the limiting position. The plate 10 moves smoothly under the guidance of the limiting groove 11 to achieve precise pressing of the coil end face; after the pin 17 is used, the pin 17 is placed between the two third reinforcing plates 15, and then the limiting space of the U-shaped part 19 is fitted over the end of the pin 17, so that the first crossbar 20 and the second crossbar 21 are located on both sides of the pin 17 respectively, the crossbar 23 and the second pressure plate 2 are tightly fitted, and finally the limiting bolt 24 is tightened to fix the U-shaped part 19 to fix the pin 17 and prevent the pin 17 from being lost when not in use.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0043] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0044] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0045] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0046] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A transformer coil clamping fixture, characterized in that, include: At least two clamping assemblies, the clamping assemblies comprising: First pressure plate (1); At least two telescopic members, one end of which is connected to the first pressure plate (1), and the telescopic members are telescopically extendable in the vertical direction; The second pressure plate (2) is connected to the other end of the telescopic member. The second pressure plate (2) and the first pressure plate (1) are spaced apart along the extension direction of the telescopic member. The first pressure plate (1) and the second pressure plate (2) are respectively arranged on both sides of the transformer coil to axially press the transformer coil.

2. The transformer coil clamping fixture according to claim 1, characterized in that, The telescopic component includes: An inner telescopic rod (3) extends along the vertical direction. The inner telescopic rod (3) is provided with a plurality of first through holes (4). The extension direction of the first through holes (4) is perpendicular to the vertical direction. The plurality of first through holes (4) are spaced apart along the extension direction of the inner telescopic rod (3). An outer telescopic rod (5) is provided, and the inner telescopic rod (3) is movably disposed inside the outer telescopic rod (5) along the vertical direction. A second through hole (6) is provided on the outer telescopic rod (5). The extension direction of the second through hole (6) is perpendicular to the vertical direction. Multiple second through holes (6) are spaced apart along the extension direction of the outer telescopic rod (5). When the inner telescopic rod (3) moves to a certain position such that any of its first through holes (4) aligns with a second through hole (6) on the outer telescopic rod (5), the fixing member can pass through the first through hole (4) and the second through hole (6) to fix the inner telescopic rod (3) and the outer telescopic rod (5) relative to each other.

3. The transformer coil clamping fixture according to claim 1, characterized in that, It also includes at least two fine-tuning components (7), each of which is respectively configured in correspondence with each of the clamping components, and each fine-tuning component (7) includes: A threaded rod (8) extends along the vertical direction and is threadedly engaged with the first pressure plate (1). The pressure block (9) is located on the side of the first pressure plate (1) near the transformer coil, and the threaded rod (8) is rotatably connected to the pressure block (9).

4. The transformer coil clamping fixture according to claim 3, characterized in that, The fine-tuning component (7) also includes two limiting plates (10), which are respectively spaced apart on the first pressure plate (1); the pressure block (9) has two limiting grooves (11), which are respectively movably arranged relative to the two limiting plates (10).

5. The transformer coil clamping fixture according to claim 3, characterized in that, The fine-tuning component (7) also includes a handheld part (12) disposed at one end of the threaded rod (8) away from the pressure block (9).

6. The transformer coil clamping fixture according to claim 2, characterized in that, It also includes two first reinforcing plates (13), which are disposed on the side of the first pressure plate (1) away from the transformer coil; Two second reinforcing plates (14), one side of the two second reinforcing plates (14) is connected to the inner telescopic rod (3); the adjacent sides of the two second reinforcing plates (14) are connected to the first pressure plate (1).

7. The transformer coil clamping fixture according to claim 2, characterized in that, It also includes two third reinforcing plates (15), which are disposed on the side of the second pressure plate (2) away from the transformer coil; Two fourth reinforcing plates (16), one side of the two fourth reinforcing plates (16) is connected to the outer telescopic rod (5); the adjacent sides of the two fourth reinforcing plates (16) are connected to the second pressure plate (2).

8. The transformer coil clamping fixture according to claim 7, characterized in that, The fastener is a pin (17), which is located between the two fourth reinforcing plates (16); it also includes a limiting component (18), which includes: The U-shaped part (19) has a limiting space for accommodating and restricting the end of the pin (17) to move. At the same time, the U-shaped part (19) engages with the second pressure plate (2) to fix its own position.

9. The transformer coil clamping fixture according to claim 8, characterized in that, The U-shaped component (19) includes: First horizontal bar (20). The second crossbar (21) is spaced apart from the first crossbar (20). The first crossbar (20) and the second crossbar (21) are located on both sides of the end of the pin (17) to restrict the end of the pin (17) from coming out. A vertical plate (22) extends along the vertical direction; the vertical plate (22) is connected to the first horizontal bar (20) and the second horizontal bar (21) respectively; A horizontal plate (23) is connected to the vertical plate (22). The horizontal plate (23) is spaced apart from the first horizontal bar (20) and the second horizontal bar (21) along the extending direction of the vertical plate (22). The horizontal plate (23) is located on the side of the second pressure plate (2) away from the transformer coil, and the horizontal plate (23) abuts against the second pressure plate (2). The vertical plate (22), the horizontal plate (23), the first horizontal bar (20), and the second horizontal bar (21) form the limiting space.

10. The transformer coil clamping fixture according to claim 8, characterized in that, The limiting assembly (18) also includes a limiting bolt (24), which is threadedly connected to the U-shaped part (19). When the limiting bolt (24) abuts against the second pressure plate (2), it fixes the U-shaped part (19).

Images