Transformer coil tightening tool
By designing a transformer coil tightening tooling and adopting a combined structure of main clamps, auxiliary clamps and L-shaped clamps, the problem of wire collapse during coil winding is solved, achieving the effect of automatically preventing wire collapse and reducing labor intensity.
Patent Information
- Application Number
- CN202422623851.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-10-30
AI Technical Summary
During the transformer coil winding process, the wire is prone to breakage. The existing technology relies on manual operation, which results in high labor intensity and affects the production environment.
A transformer coil tightening tooling is designed, which includes a main clamp, an auxiliary clamp and an L-shaped clamp. The positioning and limiting of the conductor are achieved through a detachable structure and a dovetail groove structure. The clamping force is adjusted using a butterfly nut to prevent the conductor from collapsing.
It reduces the labor intensity of operators, improves product quality, avoids the phenomenon of wire collapse, is suitable for winding coils of different heights and numbers of coils, and simplifies the operation process.
Smart Images
Figure CN223401477U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of coil winding, and in particular relates to a transformer coil tightening tool, which is used for limiting the position of a wire during the coil tightening process. Background Art
[0002] As the core component of a transformer, the tightness of the coil wire is crucial. Therefore, during the coil winding process, to ensure radial flatness and tightness, the coil must be tightened vigorously. This tightening process can easily cause some wires to collapse. This means that the wound wires can bulge upward and shift horizontally under the influence of significant tension. This phenomenon is particularly pronounced and common in transformer coils with large radial dimensions.
[0003] Currently, during the transformer coil winding process, coil tightening requires dedicated personnel, a repetitive and labor-intensive process. To prevent the wire from collapsing during coil tightening, manual labor is typically used, using a handheld nylon hammer or nylon plate to press or strike the wire as the coil is wound and tightened. This method not only requires a large number of personnel but also compromises the cleanroom environment of the production workshop.
[0004] Therefore, according to the demand for transformer production capacity growth and industry development trends, it is necessary to develop a transformer coil tightening tool that can prevent the wire from collapsing. Summary of the Invention
[0005] In order to solve the above technical problems, the present invention provides a transformer coil tightening tool. The technical solution adopted by the present invention is as follows:
[0006] The transformer coil tightening tooling includes an auxiliary clamp, a main clamp and an L-shaped clamp, the auxiliary clamp is a rectangular plate, the main clamp is a long quadrangular prism, the L-shaped clamp is installed on the outside of one end of the main clamp through a detachable structure, and the other end of the main clamp is provided with steps 1 and 2 in the height direction from the outside to the inside, and a V-shaped groove 1 in the height direction is provided at the inner edge of the outer end of step 2. One side edge of the auxiliary clamp is abutted against step 1, and the middle part of the auxiliary clamp is installed on step 2 through a detachable structure, and a V-shaped groove 2 is provided at the edge of the other side of the auxiliary clamp. The shape, size and position of V-shaped groove 2 match those of V-shaped groove 1, and the combination of V-shaped groove 1 and V-shaped groove 2 forms a dovetail groove structure that matches the vertical support bar.
[0007] Preferably, stud one is installed at the center position of the end face of one end of the main clamp, and a positioning waist hole is opened at the upper middle position of the vertical side of the L-shaped clamp. After stud one passes through the positioning waist hole, butterfly nut one is tightened; stud two is installed at the center position of the length direction plane of step two, and a through hole is opened in the auxiliary clamp corresponding to the position of stud two, and after stud two passes through the through hole, butterfly nut two is tightened.
[0008] Preferably, circular recessed holes are respectively provided at the center position of the end surface of one end of the main body clamp and the center position of the plane in the second length direction of the step, and the one end portion and the second end portion of the stud are inserted into the circular recessed holes and fixed by welding.
[0009] Preferably, an internal threaded hole is respectively provided at the center position of the end surface of one end of the main body clamp and the center position of the plane in the length direction of the second step, and the first end and the second end of the stud are screwed into the internal threaded hole and tightened and fixed.
[0010] Preferably, a rectangular weight-reducing groove is provided on the side of the main body clamp from step one to an end away from step one, and the cross section of the weight-reducing groove is a U-shaped structure.
[0011] Preferably, a rectangular weight-reducing notch is provided in the middle of the horizontal side surface of the L-shaped clamp.
[0012] Beneficial effects of the utility model:
[0013] The auxiliary clamps and L-shaped clamps are installed on the main clamps through a detachable structure, which is convenient for adjustment and disassembly. The designed step and dovetail groove structure can achieve clever positioning of the inner end of the tooling. It can effectively reduce the labor intensity of operators, reduce labor costs, and improve product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0015] Figure 1 This is a front cross-sectional view of the transformer coil tightening tooling in use according to an embodiment of the present utility model;
[0016] Figure 2 A top view of a transformer coil tightening tool according to an embodiment of the present utility model;
[0017] Figure 3 A top view of an L-shaped clamp according to an embodiment of the present invention;
[0018] Figure 4 This is a right side view of the L-shaped clamp according to an embodiment of the present invention;
[0019] Figure 5 A top view of the main body clamp of an embodiment of the present utility model;
[0020] Figure 6 This is a rear view of the main body clamp of an embodiment of the present utility model;
[0021] Figure 7 for Figure 6 Cross-sectional view at BB in FIG;
[0022] In the figure, 1-wire cake, 2-main body clamp, 3-butterfly nut one, 4-stud one, 5-L-shaped clamp, 6-butterfly nut two, 7-auxiliary clamp, 8-positioning waist hole, 9-weight reduction notch, 10-stud two, 11-step one, 12-step two, 13-V-shaped groove one, 14-weight reduction groove, 15-V-shaped groove two. DETAILED DESCRIPTION
[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0024] like Figure 1-7 As shown, the transformer coil tightening tooling includes a main body clamp 2, an auxiliary clamp 7 and an L-shaped clamp 5. The overall structure of the main body clamp 2 is a long quadrangular prism. The length direction of the main body clamp 2 in the use state is horizontal, and the height of the main body clamp 2 is greater than the width; the L-shaped clamp 5 is fixedly installed on the right end outside of the main body clamp 2 through a detachable structure, and the left end of the main body clamp 2 is provided with a step 11 and a step 2 12 in the height direction from the rear side to the front side. The height of step 11 is greater than the height of step 2 12. The overall structure of the auxiliary clamp 7 is a rectangular plate. The auxiliary clamp 7 is fixedly installed at step 11 of the main body clamp 2 through a detachable structure.
[0025] A stud 14 is fixedly installed at the center of the right end face of the main body clamp 2, and a stud 2 10 is fixedly installed at the center of the length direction plane of the step 2 12. There are two types of fixing structures for the stud 14 and the stud 2 10. One is to machine a circular concave hole at the corresponding position of the main body clamp 2, and the stud 14 and the stud 2 10 are inserted into the circular concave hole and welded to fix. The other is to machine an internal threaded hole at the corresponding position of the main body clamp 2, and the stud 14 and the stud 2 10 are screwed into the internal threaded hole and tightened to fix. A V-shaped groove 13 is provided at the inner edge of the outer end of the step 2 12 at the left end of the main body clamp 2 in the height direction, and a rectangular weight-reducing groove 14 is provided on the rear side of the main body clamp 2 from the step 11 to the right end. The cross section of the weight-reducing groove 14 is a U-shaped structure. On the one hand, the weight-reducing groove 14 can reduce the weight of the main body clamp 2 without affecting the bending strength, and at the same time, it serves as a fulcrum for convenient transportation of the main body clamp 2.
[0026] A long, strip-shaped positioning hole 8 is provided in the upper middle portion of the right vertical side surface of the L-shaped clamp 5. After stud 14 is passed through positioning hole 8 and adjusted to the appropriate position within positioning hole 8, butterfly nut 13 is screwed into stud 14 and tightened to securely connect the L-shaped clamp 5 to the main clamp 2. A rectangular, weight-reducing notch 9 is provided in the middle portion of the bottom horizontal side surface of the L-shaped clamp 5. The left side of the weight-reducing notch 9 extends to and through the left edge of the L-shaped clamp 5. The weight-reducing notch 9 not only reduces the weight of the L-shaped clamp 5 but also serves as a fulcrum for easier handling of the L-shaped clamp 5.
[0027] The auxiliary clamp 7 has a through hole corresponding to the position of the second stud 10. The right end of the auxiliary clamp 7 is in contact with the first step 11, which provides support for the right end of the auxiliary clamp 7. After the second stud 10 passes through the through hole, the second butterfly nut 6 is screwed into the second stud 10 and tightened, thereby fixing the auxiliary clamp 7 to the main clamp 2. The edge of the auxiliary clamp 7 has a second V-shaped groove 15 at a position corresponding to the first V-shaped groove 13. The shape and size of the first V-shaped groove 13 and the second V-shaped groove 15 match each other. The combination of the first V-shaped groove 13 and the second V-shaped groove 15 forms a dovetail groove structure that matches the vertical support strips on the outer periphery of the cardboard tube.
[0028] The main body clamp 2 can also be formed into the weight-reducing groove 14 by an integral casting process, which can save the use of raw materials.
[0029] In the embodiment of the present invention, butterfly nuts 1 3 and 2 6 are used. The butterfly nuts facilitate adjustment of the clamping force. Gradually tightening the butterfly nuts allows the tightening force to increase slowly, which is smoother than the force applied by the previous pressing and hammering method (impact), effectively preventing wire collapse. The positioning waist hole 8 provided on the L-shaped clamp 5 allows the upper and lower positions of the main clamp 2 relative to the L-shaped clamp 5 to be adjusted, suitable for transformer coils of different heights. The reasonable arrangement of the components such as the main clamp 2, auxiliary clamp 7, and L-shaped clamp 5 ensures that wire collapse can be automatically prevented during the coil tightening process.
[0030] The steps for manufacturing, installing and using the transformer coil tightening tool provided in the embodiment of the present invention are as follows:
[0031] ① According to the cross-sectional shape and size of the vertical support bar of the coil, the shape and size of the V-shaped groove 13 and the V-shaped groove 2 15 are designed to avoid damaging the vertical support bar when fixing and tightening the tooling.
[0032] ② Considering the number of layers of the coil 1 (coil height), design a suitable length of the positioning waist hole 8 on the L-shaped clamp 5 to meet the use requirements of different coil numbers.
[0033] ③ According to the radial size of the wire coil 1, design the appropriate length of the main clamp 2 to ensure that the tightening tool can cover all radial wires.
[0034] ④ Place the main clamp 2 and the auxiliary clamp 7 so that the V-shaped groove 13 and the V-shaped groove 2 15 fit together and clamp the vertical support bar, and fix the auxiliary clamp 7 and the main clamp 2 into one piece through the butterfly nut 2 6; place the L-shaped clamp 5, and fix the main clamp 2 and the L-shaped clamp 5 into one piece through the butterfly nut 1 3.
[0035] ⑤ During the coil winding process, the wire is tightened. The main clamp 2 and the L-shaped clamp 5 cooperate with the wire of the wire disc 1 to provide radial limitation to prevent the wire from collapsing during the coil tightening process.
[0036] The transformer coil tightening tool provided by the embodiment of the utility model can be taken out and used at any time, and can be flexibly and conveniently disassembled. It can be applied to the winding and tightening processes of transformer and reactor coils, effectively preventing the wire from collapsing when tightening the coil, and greatly reducing the labor intensity of operators.
[0037] In the embodiments of the present invention, technical features that are not described in detail are all existing technologies or conventional technical means and will not be described in detail here.
[0038] Finally, it should be noted that the above embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.
Claims
1. A transformer coil tightening tool, comprising an auxiliary clamp (7), a main clamp (2) and an L-shaped clamp (5), wherein the auxiliary clamp (7) is a rectangular plate, and the main clamp (2) is a long quadrangular prism, characterized in that: The L-shaped clamp (5) is mounted on the outside of one end of the main clamp (2) through a detachable structure, and the other end of the main clamp (2) is provided with a step 1 (11) and a step 2 (12) in the height direction from the outside to the inside, and a V-shaped groove 1 (13) in the height direction is provided at the inner edge of the outer end of the step 2 (12). One side edge of the auxiliary clamp (7) is abutted against the step 1 (11), and the middle part of the auxiliary clamp (7) is mounted on the step 2 (12) through a detachable structure, and a V-shaped groove 2 (15) is provided at the edge of the other side of the auxiliary clamp (7). The shape, size and position of the V-shaped groove 2 (15) match each other, and the V-shaped groove 1 (13) and the V-shaped groove 2 (15) are combined to form a dovetail groove structure that matches the vertical support bar.
2. The transformer coil tightening tool according to claim 1, characterized in that: A stud (4) is installed at the center of one end face of the main clamp (2), and a positioning waist hole (8) is provided at the middle position of the upper part of the vertical side of the L-shaped clamp (5). After the stud (4) passes through the positioning waist hole (8), the butterfly nut (3) is tightened. A stud (10) is installed at the center of the plane in the longitudinal direction of the step (12), and a through hole is provided at the position corresponding to the stud (10) of the auxiliary clamp (7). After the stud (10) passes through the through hole, the butterfly nut (6) is tightened.
3. The transformer coil tightening tool according to claim 2, characterized in that: Circular recessed holes are respectively provided at the center position of the end face of one end of the main clamp (2) and the center position of the plane in the length direction of the second step (12), and the end of the first stud (4) and the end of the second stud (10) are inserted into the circular recessed holes and fixed by welding.
4. The transformer coil tightening tool according to claim 2, characterized in that: Internal threaded holes are respectively provided at the center position of the end face of one end of the main clamp (2) and the center position of the plane in the length direction of the step 2 (12), and the end of the stud 1 (4) and the end of the stud 2 (10) are screwed into the internal threaded holes and tightened.
5. The transformer coil tightening tool according to claim 1, characterized in that: A rectangular weight-reducing groove (14) is provided on the side of the main body clamp (2) from step one (11) to the end away from step one (11), and the cross section of the weight-reducing groove (14) is a U-shaped structure.
6. The transformer coil tightening tool according to claim 1, characterized in that: A rectangular weight-reducing notch (9) is provided in the middle of the horizontal side surface of the L-shaped clamp (5).