Transformer iron core cross-core screw assembly
By designing a threaded tube and rubber ring structure in the transformer core through-bolt assembly, the problems of bolt loosening and water leakage were solved, achieving stable connection and waterproof effect, and improving the reliability of the transformer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-03-17
AI Technical Summary
Existing transformer core through-bolt assemblies are prone to loosening and water leakage during long-term use, affecting operational stability.
The first and second threaded pipes are connected by the external thread of the screw. The design of the first screw cap and the opening on the outside of the threaded pipe increases the tightness of the threaded fit, and the rubber ring and the round groove prevent water leakage.
It effectively prevents nuts from loosening, ensures connection stability during long-term use, prevents water leakage, and improves the operational reliability of the transformer.
Smart Images
Figure CN224005756U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transformer technology, specifically to a transformer core through-bolt assembly. Background Technology
[0002] The transformer core, as the core component of a transformer, undertakes the main function of the magnetic circuit, and its performance directly affects the transformer's efficiency and stability. The core is usually made of stacked silicon steel sheets and fixed to structural components by through-bolts to reduce electromagnetic vibration and noise during operation.
[0003] Existing transformer core through-bolt assemblies typically use conventional bolts and nuts to fix the core and support. However, prolonged use can cause the nuts to loosen, and water may leak from the contact point between the nut and the support. Therefore, we propose a transformer core through-bolt assembly. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a transformer core through-bolt assembly, which solves the problems mentioned in the background section.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a transformer core through-bolt assembly, comprising four supports and a core body, the core body being located between the four supports, a bolt inserted into the supports and the core body, a second threaded tube threaded to the outer side of the bolt, a third thread on the inner wall of the second threaded tube, a second nut fixedly installed on the outer side of the second threaded tube, a second thread on the inner wall of the second nut, a second thread, a first threaded tube threaded to the outer side of the bolt, a first thread on the outer side of the first threaded tube, the first thread engaging with the second thread, the first thread... One end of the tube is fixedly connected to a first nut, which is threadedly connected to the screw. An opening is provided on the outside of the first nut and the first threaded tube. A washer is fixedly connected to one side of the second nut. A screw head is fixedly installed on the other end of the screw. Rubber rings are fixedly installed on both sides of the washer and the screw head that are close to each other. By tightening the first nut, the first nut and the screw are engaged. Due to the existence of the opening, the more the first nut is tightened, the tighter it becomes as thread one turns into thread two. The longer the turning distance, the tighter the second nut will be, and it can be ensured that the second nut will not loosen for a long time.
[0006] Preferably, a yellow wax tube is fixedly connected to one side of the screw head, and the yellow wax tube is sleeved on the outside of the screw.
[0007] Preferably, a plug is fixedly connected to one side of the gasket, and the plug mates with the yellow wax tube.
[0008] Preferably, a circular groove is provided on one side of the bracket, and the circular groove cooperates with the rubber ring.
[0009] Preferably, a hexagonal limiting frame is fixedly installed on one side of the bracket, and the hexagonal limiting frame cooperates with the screw head. The cooperation between the hexagonal limiting frame and the screw head can prevent the screw from sliding during fixing.
[0010] This utility model provides a transformer core through-bolt assembly, which has the following beneficial effects:
[0011] 1. The transformer core through-bolt assembly, through the setting of the first nut and the first threaded tube, because the first nut and the first threaded tube have openings on their outer sides, when thread one and thread two are engaged, and when thread one is tightened on thread two, the openings will shrink, so the first nut and the first threaded tube will become tighter. Through this setting, the loosening of the second nut during long-term use can be prevented from affecting the use.
[0012] 2. The transformer core through-bolt assembly, through the setting of rubber ring and circular groove, when the second nut is tightened, the washer will move with the rubber ring. When tightened to the maximum, the rubber ring will be squeezed into the circular groove. Through this process, water leakage at the connection can be prevented. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This is a schematic diagram from another perspective of the present invention;
[0015] Figure 3 This utility model Figure 1 Enlarged view of point A in the image;
[0016] Figure 4 This utility model Figure 2 Enlarged view of point B in the image;
[0017] Figure 5 This is a schematic diagram of the screw installation of this utility model;
[0018] Figure 6 This is a schematic diagram of the screw installation of this utility model from another perspective;
[0019] Figure 7 This is a schematic diagram of the first screw cap of this utility model;
[0020] Figure 8 This is a schematic diagram of the second screw cap of this utility model.
[0021] In the diagram: 1. Bracket; 2. Iron core body; 3. Screw; 4. First screw cap; 5. Opening; 6. First threaded tube; 601. Thread one; 7. Second screw cap; 701. Thread two; 8. Second threaded tube; 801. Thread three; 9. Washer; 10. Rubber ring; 11. Insert; 12. Yellow wax tube; 13. Screw head; 14. Hexagonal limiting frame; 15. Circular groove. 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.
[0023] Please see Figures 1 to 8 This utility model provides a technical solution: a transformer core through-core screw assembly, including four supports 1 and a core body 2, with the core body 2 located between the four supports 1. Screws 3 are inserted into the supports 1 and the core body 2 to fix the supports 1 and the core body 2. A second threaded tube 8 is threaded to the outside of the screw 3. The inner wall of the second threaded tube 8 is provided with a third thread 801. A second screw cap 7 is fixedly installed on the outside of the second threaded tube 8. The inner wall of the second screw cap 7 is provided with a second thread 701. A first threaded tube 6 is threaded to the outside of the screw 3. The outer side of the threaded tube 6 is provided with a thread 601, which mates with a thread 701. One end of the first threaded tube 6 is fixedly connected to a first nut 4, which is threadedly connected to the screw 3. An opening 5 is provided on the outer side of the first nut 4 and the first threaded tube 6. A washer 9 is fixedly connected to one side of the second nut 7. The washer 9 is used to increase the friction between the second nut 7 and the bracket 1. A screw head 13 is fixedly installed on the other end of the screw 3. Rubber rings 10 are fixedly installed on both sides of the washer 9 and the screw head 13 that are close to each other. The rubber rings 10 are used to prevent water leakage.
[0024] like Figure 5 As shown, a yellow wax tube 12 is fixedly connected to one side of the screw head 13. The yellow wax tube 12 is used for insulation between the iron core body 2 and the screw 3, and the yellow wax tube 12 is sleeved on the outside of the screw 3.
[0025] like Figure 6 As shown, a plug 11 is fixedly connected to one side of the gasket 9, and the plug 11 is matched with the yellow wax tube 12.
[0026] like Figure 6 As shown, a circular groove 15 is provided on one side of the bracket 1, and the circular groove 15 cooperates with the rubber ring 10.
[0027] like Figure 4 As shown, a hexagonal limiting frame 14 is fixedly installed on one side of the bracket 1, and the hexagonal limiting frame 14 cooperates with the screw head 13.
[0028] In summary, when using this transformer core through-bolt assembly, the operator first places the waxed tube 12 over the outside of the bolt 3, then inserts the bolt 3 into the bracket 1 and the core 2, and then inserts the bolt head 13 into the hexagonal limiting frame 14, ensuring that the rubber ring 10 on one side of the bolt head 13 mates with the circular groove 15 in the hexagonal limiting frame 14. Then, the second nut 7 can be removed, and one end of the washer 9 is first engaged with the bolt 3. The second nut 7 is then tightened using a tool. Because the thread 701 engages with the bolt 3, tightening the second nut 7 will push the washer 9 to move. When it reaches a certain position, the insert 11 will be inserted into the waxed tube 12. The second nut 7 is then tightened until... The rubber ring 10 on one side of the gasket 9 mates with the circular groove 15 on the bracket 1, and the rubber ring 10 is completely squeezed into the circular groove 15. After being squeezed in, it can be ensured that there will be no water leakage at the connection. Then, the first nut 4 is picked up, and one end of the first threaded tube 6 is engaged with the screw 3. Since the outer side of the screw 3 is threadedly connected to the first threaded tube 6 and the first nut 4, the first nut 4 is continuously turned. Since the first nut 4 and the outer side of the first threaded tube 6 have openings 5, when the first thread 601 is turned into the second thread 701, the longer the turning distance, the tighter the second nut 7 will be, and it can be guaranteed not to loosen for a long time. The above is the working principle of this utility model.
[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A transformer core through-screw assembly comprising four supports (1), a core body (2), characterized in that: The iron core body (2) is located between four supports (1), the support (1) and the iron core body (2) are inserted with a screw rod (3), the outer side of the screw rod (3) is threadedly connected with a second threaded pipe (8), the inner wall of the second threaded pipe (8) is provided with thread three (801), the outer side of the second threaded pipe (8) is fixedly installed with a second screw cap (7), the inner wall of the second screw cap (7) is provided with thread two (701), the outer side of the screw rod (3) is threadedly connected with a first threaded pipe (6), the outer side of the first threaded pipe (6) is provided with thread one (601), thread one (601) cooperates with thread two (701), one end of the first threaded pipe (6) is fixedly connected with a first screw cap (4), and the first screw cap (4) is threadedly connected with the screw rod (3), the outer side of the first screw cap (4) and the first threaded pipe (6) is provided with an opening (5), one side of the second screw cap (7) is fixedly connected with a gasket (9), the other end of the screw rod (3) is fixedly installed with a screw rod head (13), the two sides of the gasket (9) and the screw rod head (13) fixedly installed with rubber rings (10) are close to each other.
2. A transformer core crossbar screw assembly according to claim 1, characterized in that: The screw rod head (13) is fixedly connected with a yellow wax pipe (12), and the yellow wax pipe (12) is sleeved on the outer side of the screw rod (3).
3. A transformer core crossbar screw assembly according to claim 2, characterized in that: The gasket (9) is fixedly connected with a plug barrel (11) on one side, and the plug barrel (11) cooperates with the yellow wax pipe (12).
4. A transformer core crossbar screw assembly as defined in claim 1, wherein: The support (1) is provided with a circular groove (15) on one side, and the circular groove (15) cooperates with the rubber ring (10).
5. A transformer core crossbar screw assembly as defined in claim 1 wherein: The support (1) is fixedly installed with a hexagonal limiting frame (14) on one side, and the hexagonal limiting frame (14) cooperates with the screw rod head (13).