A transformer body coil axial clamping fixture

Abstract

This utility model discloses an axial clamping fixture for transformer body coils, belonging to the field of transformer body manufacturing technology. It includes two sets of clamping fixtures, namely clamping fixture one and clamping fixture two, which are movably disposed on both sides of the transformer body coils. For coils with long open-circuit times, axial dimensional tolerances can be guaranteed without secondary rework, reducing coil rework rate. It can effectively control coil height, preventing short-circuit faults between coils, ensuring safe and reliable operation of the transformer under rated voltage, and reducing the probability of electrical accidents. It also makes the overall structure of the transformer more compact and stable, improving the transformer's mechanical strength and reliability. Furthermore, it reduces the number of repairs and replacements due to coil damage, insulation aging, and other problems, reducing maintenance workload and costs, and improving the transformer's economic efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of transformer body manufacturing technology, and in particular relates to a transformer body coil axial clamping tool. Background Technology

[0002] After the traditional liquid-immersed transformer is assembled, the yoke laminations need to be installed. Due to the uncertainty of the production plan, the time the coil is exposed to the air is unstable. If the exposure time is too long, the moisture in the air will adhere to the surface of the transformer's insulation material, causing the insulation material to become damp and rebound, resulting in the axial dimension of the coil exceeding the tolerance. This makes it impossible to install the yoke laminations, thus increasing the rework rate of the coil.

[0003] Therefore, after the coil is assembled, a coil axial clamping fixture is needed to control the axial dimension of the coil, ensuring that the rebound is less than the tolerance requirement, and ensuring that the yoke inserting operation is carried out smoothly. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides an axial clamping fixture for transformer body coils, which can effectively control the axial dimensions of the coils and reduce the rework rate of the coils.

[0005] The technical solution adopted by this utility model is as follows: A transformer body coil axial clamping fixture, including a clamping fixture for clamping the coil axially, the clamping fixture is provided in two sets, namely clamping fixture one and clamping fixture two, the clamping fixture one and clamping fixture two are respectively movably disposed on both sides of the transformer body coil;

[0006] The clamping fixture one and clamping fixture two have the same structure. The clamping fixture one includes an upper crossbeam and a lower crossbeam. The upper crossbeam is movably connected to the upper wall of the coil, and the lower crossbeam is movably connected to the lower wall of the coil. Multiple sets of screwing components for screwing are installed between the upper crossbeam and the lower crossbeam.

[0007] The screwing assembly includes a pressure beam connecting clip and a screw tube. The pressure beam connecting clip is respectively located on the upper crossbeam and the lower crossbeam, and is positioned opposite to each other. The upper end of the screw tube is connected to the pressure beam connecting clip on the upper crossbeam by bolts. A bearing support seat is installed at the lower end of the screw tube, and a rotating frame is movably installed on the bearing support seat.

[0008] The screwing assembly further includes a screw rod, the upper end of which is movably mounted on the bottom wall of the rotating frame, and the lower end of which is connected to the pressure beam connecting clip on the lower crossbeam by bolts.

[0009] The rotating frame has a threaded hole on its bottom wall and the screw has a thread on its outer side wall, and the screw is matched with the threaded hole.

[0010] Several sets of screwing components rotate the rotating frame synchronously under manual operation. When the rotating frame rotates, the screw moves upward, shortening the distance between the upper and lower crossbeams, and performing axial clamping of the coil.

[0011] The rotating component has a frame-shaped structure.

[0012] The beneficial effects of this utility model after adopting the above structure are as follows:

[0013] 1. For coils with a long blowout time, axial dimensional tolerances can be guaranteed without rework by re-sinking, thus reducing the coil rework rate.

[0014] 2. The clamping device can effectively control the coil height, prevent short circuit faults between coils, ensure the transformer operates safely and reliably under rated voltage, and reduce the probability of electrical accidents.

[0015] 3. Keeping the coil height within the specified value also makes the overall structure of the transformer more compact and stable, improving the transformer's mechanical strength and reliability.

[0016] 4. A reasonable coil height can reduce the number of repairs and replacements caused by coil damage, insulation aging, and other problems, thereby reducing maintenance workload and costs and improving the economic efficiency of the transformer. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0018] Figure 1 A schematic diagram of the structure of a transformer body coil axial clamping fixture proposed in this utility model. Figure 1 ;

[0019] Figure 2 This is a partial structural schematic diagram of a transformer body coil axial clamping fixture proposed in this utility model;

[0020] Figure 3 A schematic diagram of the structure of a transformer body coil axial clamping fixture proposed in this utility model. Figure 2 .

[0021] In the attached diagram: 1. Clamping fixture one, 2. Clamping fixture two, 3. Upper crossbeam, 4. Lower crossbeam, 5. Clamping beam connecting clip, 6. Screw tube, 7. Bearing support seat, 8. Rotating frame, 9. Screw, 10. Threaded hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] like Figures 1-3 As shown, a transformer body coil axial clamping fixture includes a clamping fixture for clamping the coil axially. The clamping fixture is provided in two sets, namely clamping fixture one 1 and clamping fixture two 2, which are respectively movably disposed on both sides of the transformer body coil.

[0025] The clamping fixture 1 and clamping fixture 2 have the same structure. The clamping fixture 1 includes an upper crossbeam 3 and a lower crossbeam 4. The upper crossbeam 3 is movably connected to the upper wall of the coil, and the lower crossbeam 4 is movably connected to the lower wall of the coil. Multiple sets of screwing components for screwing are installed between the upper crossbeam 3 and the lower crossbeam 4.

[0026] The screwing assembly includes a pressure beam connecting clip 5 and a screw tube 6. The pressure beam connecting clip 5 is respectively disposed on the upper crossbeam 3 and the lower crossbeam 4, and is positioned opposite to each other. The upper end of the screw tube 6 is connected to the pressure beam connecting clip 5 on the upper crossbeam 3 by bolts. A bearing support seat 7 is installed at the lower end of the screw tube 6, and a rotating frame 8 is movably installed on the bearing support seat 7.

[0027] The screwing assembly also includes a screw 9, the upper end of which is movably mounted on the bottom wall of the rotating frame 8, and the lower end of which is bolted to the pressure beam connecting clip 5 on the lower crossbeam 4.

[0028] The bottom wall of the rotating frame 8 is provided with a threaded hole 10, and the outer wall of the screw 9 is provided with threads, and the screw 9 is matched with the threaded hole 10.

[0029] The specific usage is as follows:

[0030] (1) After the coil assembly is completed, the clamping fixture is directly assembled.

[0031] (2) The bearing support seat 7 is installed on the rotating frame 8, and then the lower end of the screw tube 6 is assembled to the bearing support seat 7. The upper end of the screw tube 6 is connected to the upper crossbeam 3 through the pressure beam connecting clip 5. The upper end of the screw 9 is assembled into the threaded hole 10 of the rotating frame 8. The lower end of the screw 9 is connected to the lower crossbeam 4 through the pressure beam connecting clip 5. The upper crossbeam 3 is located on the upper wall of the coil, and the lower crossbeam 4 is clamped on the bottom wall of the coil.

[0032] (3) All rotating frames 8 are rotated synchronously under human power. When rotating frames 8 rotate, screw 9 moves upward, shortening the distance between upper crossbeam 3 and lower crossbeam 4, and performing axial pressing operation on the coil.

[0033] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents. In conclusion, if those skilled in the art, inspired by this description, design similar structural methods and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A transformer body coil axial pressing tool, characterized in that, It includes a clamping fixture for axially clamping the coil. The clamping fixture is provided in two sets, namely clamping fixture one and clamping fixture two, which are respectively movably disposed on both sides of the transformer body coil. The clamping fixture one and clamping fixture two have the same structure. The clamping fixture one includes an upper crossbeam and a lower crossbeam. The upper crossbeam is movably connected to the upper wall of the coil, and the lower crossbeam is movably connected to the lower wall of the coil. Multiple sets of screwing components for screwing are installed between the upper crossbeam and the lower crossbeam.

2. The transformer body coil axial clamping fixture according to claim 1, characterized in that, The screwing assembly includes a pressure beam connecting clip and a screw tube. The pressure beam connecting clip is respectively located on the upper crossbeam and the lower crossbeam, and is positioned opposite to each other. The upper end of the screw tube is connected to the pressure beam connecting clip on the upper crossbeam by bolts. A bearing support seat is installed at the lower end of the screw tube, and a rotating frame is movably installed on the bearing support seat.

3. The transformer body coil axial clamping fixture according to claim 2, characterized in that, The screwing assembly also includes a screw rod, the upper end of which is movably mounted on the bottom wall of the rotating frame, and the lower end of which is connected to the pressure beam connecting clip on the lower crossbeam by bolts.

4. The transformer body coil axial clamping fixture according to claim 3, characterized in that, The bottom wall of the rotating frame is provided with a threaded hole, and the outer wall of the screw is provided with a thread, and the screw is matched with the threaded hole.

5. The transformer body coil axial clamping fixture according to claim 2, characterized in that, The rotating component has a frame-shaped structure.

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