Transformer iron core fixing frame

Abstract

The utility model relates to a transformer iron core fixing frame, which comprises a placing seat, a top fixing device and a base angle fixing device, an iron core is placed in the placing seat, the base angle fixing device is arranged at the inner bottom of the placing seat, the top fixing device is arranged at the inner top of the placing seat, and the base angle fixing device is arranged on the inner bottom of the placing seat. The bottom angle fixer and the top fixer are matched to limit and fix the iron core between the bottom angle fixer and the top fixer, the top fixer comprises a pressing plate and a lifting adjusting structure, and the pressing plate is connected below the lifting adjusting structure. Through the cooperative arrangement of the top fixer and the bottom corner fixer, after the iron core is placed between the top fixer and the bottom corner fixer, the iron core can be limited and fixed by the two groups of corner fixing pieces and the pressing plate only by operating the lifting adjusting structure; therefore, the convenience of mounting and fixing the iron core by the transformer iron core fixing frame is improved, and the time consumed for assembling is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, and specifically relates to a fixing frame for a transformer iron core. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. The transformer iron core is composed of silicon steel sheets. In order to reduce the heat loss in the iron core, the iron core is stacked by silicon steel sheets with a thickness of 0.23 - 0.5 mm.

[0003] During the assembly process of the transformer iron core, a fixing frame is required to complete the limit fixing. In the prior art, for example, the utility model patent with the Chinese patent publication number CN220420399U proposes a fixing frame for a transformer iron core. When fixing the transformer iron core, first remove the nut on the long screw, loosen the U-shaped fastening plate, place the transformer iron core on the fixed base, and then connect the U-shaped fastening plate to the fixed base through the long screw and the nut to fix the transformer iron core in the vertical direction, and then adjust the fastening distance in the horizontal direction through the fastening device.

[0004] However, in the use process of the aforementioned fixing frame for a transformer iron core, it is necessary to tighten the bolts or nuts multiple times, resulting in a more cumbersome limit fixing operation for the transformer iron core and increasing the time required for assembly.

[0005] Technical Problem to be Solved

[0006] The utility model provides a fixing frame for a transformer iron core, which solves the problem that in the use process of the fixing frame for a transformer iron core, it is necessary to tighten the bolts or nuts multiple times, resulting in a more cumbersome limit fixing operation for the transformer iron core and increasing the time required for assembly.

[0007] (II) Technical Solution

[0008] To achieve the above object, the present utility model provides the following technical solutions: A transformer core fixing frame, comprising a placement seat, a top fixator, and a bottom corner fixator. The core is placed inside the placement seat. The bottom corner fixator is installed at the inner bottom of the placement seat, and the top fixator is installed at the inner top of the placement seat. And the bottom corner fixator and the top fixator cooperate to limit and fix the core located between them. The top fixator includes a pressing plate and a lifting adjustment structure. The pressing plate is connected to the lower part of the lifting adjustment structure, so that the height position of the pressing plate can be adjusted by the lifting adjustment structure. The bottom corner fixator includes two groups of corner fixing members, a positioning rotating shaft, a hanging shaft, a deflection seat, and a spring. The middle parts of the two groups of corner fixing members are respectively rotatably connected to the placement seat by a positioning rotating shaft. The two groups of deflection seats are respectively rotatably connected to the bottom of the corner fixing members by a hanging shaft. The opposite sides of the two groups of deflection seats are respectively fixedly connected to both ends of the spring, so that the two groups of corner fixing members symmetrically adjust their deflection states by the elastic deformation of the spring.

[0009] Preferably, the corner fixing member faces the bottom corner of the core, and both side surfaces of the corner fixing member facing the core are provided as arc surfaces. The bottom of the corner fixing member extends downward to form an extension part, and the hanging shaft is inserted at the bottom of the extension part.

[0010] More preferably, the lifting adjustment structure includes a positioning ring, a limiting ring, and a threaded rod. The threaded rod is threadedly connected to the top of the placement seat. The lower end of the threaded rod rotatably passes through the limiting ring and extends into the positioning ring. The lower end of the limiting ring is inserted into the inner top of the positioning ring and is fixedly connected thereto. The bottom of the positioning ring is fixedly connected to the top plane of the pressing plate.

[0011] More preferably, the lower end of the threaded rod forms a convex ring with a diameter larger than that of the threaded rod, and the diameter of the convex ring is larger than the inner diameter of the limiting ring and smaller than the inner diameter of the positioning ring. The top end of the threaded rod is also detachably fixedly connected with a handle, and the handle is located above the placement seat.

[0012] More preferably, the length and width of the pressing plate are respectively adapted to the length and width of the core.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the present utility model provides a transformer core fixing frame, which has the following beneficial effects:

[0015] In the present utility model, through the cooperative setting of the top fixator and the bottom corner fixator, after the iron core is placed between the top fixator and the bottom corner fixator, only by operating the lifting adjustment structure can the two groups of corner fixing parts and the pressing plate complete the limit fixation of the iron core, thereby improving the convenience of the transformer iron core fixing frame for installing and fixing the iron core and reducing the time-consuming required for assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic structural diagram of a transformer iron core fixing frame in cooperation with an iron core according to an embodiment;

[0017] Figure 2 is Figure 1 a schematic structural diagram of the transformer iron core fixing frame with the placement seat cut open in ;

[0018] Figure 3 is a schematic exploded structural diagram of the top fixator according to an embodiment.

[0019] In the figure: 10, placement seat; 20, top fixator; 21, pressing plate; 22, positioning ring; 23, limiting ring; 24, threaded rod; 241, convex ring; 242, handle; 30, bottom corner fixator; 31, corner fixing part; 311, extension part; 32, positioning rotating shaft; 33, hanging shaft; 34, deflecting seat; 35, spring; 40, iron core. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figure 1 and Figure 2 , a transformer iron core fixing frame includes a placement seat 10, a top fixator 20, and a bottom corner fixator 30. The bottom corner fixator 30 is installed at the inner bottom of the placement seat 10, and the top fixator 20 is installed at the inner top of the placement seat 10. When installing the transformer iron core, the iron core 40 can be placed in the placement seat 10 and located between the top fixator 20 and the bottom corner fixator 30. Then, by adjusting the top fixator 20, the top fixator 20 and the bottom corner fixator 30 can cooperate to limit and fix the iron core 40 located between them.

[0022] Refer to Figure 3, the top fixer 20 includes a pressing plate 21 and a lifting and adjusting structure. The pressing plate 21 is connected and arranged below the lifting and adjusting structure, and the pressing plate 21 can be driven by the lifting and adjusting structure to adjust its height position. The lifting and adjusting structure includes a positioning ring 22, a limiting ring 23 and a threaded rod 24. The threaded rod 24 is threadedly connected to the top of the placing seat 10, so that it can be screwed down or up. The bottom of the positioning ring 22 is fixedly connected to the top plane of the pressing plate 21, and the lower end of the limiting ring 23 is inserted into the inner top of the positioning ring 22 and fixedly connected thereto. The lower end of the threaded rod 24 rotatably passes through the limiting ring 23 and extends into the positioning ring 22. During the process of screwing in the threaded rod 24, it can drive the positioning ring 22, the limiting ring 23 and the pressing plate 21 to move up or down. A convex ring 241 with a diameter larger than that of the threaded rod 24 is formed at the lower end of the threaded rod 24, and the diameter of the convex ring 241 is larger than the inner diameter of the limiting ring 23 and smaller than the inner diameter of the positioning ring 22, so that when the threaded rod 24 rotates, it can drive the positioning ring 22 and the limiting ring 23 to move longitudinally therewith. A handle 242 is also detachably and fixedly connected to the top end of the threaded rod 24. The handle 242 is located above the placing seat 10, so that the user can hold the handle 242 to operate the top fixer 20. The length and width of the pressing plate 21 respectively match the length and width of the iron core 40. When the pressing plate 21 is driven to move downward, it can press against the top of the iron core 40.

[0023] Refer to Figure 2 , the bottom corner fixer 30 includes two groups of corner fixing parts 31, a positioning rotating shaft 32, a hanging shaft 33, a deflecting seat 34 and a spring 35. The middle parts of the two groups of corner fixing parts 31 are respectively rotatably connected to the placing seat 10 by a positioning rotating shaft 32, so that they can deflect with the positioning rotating shaft 32 as the rotation axis. The two groups of deflecting seats 34 are respectively rotatably connected to the bottom of the corner fixing parts 31 by a hanging shaft 33. The opposite sides of the two groups of deflecting seats 34 are respectively fixedly connected to the two ends of the spring 35, so that during the deformation of the spring, the deflecting seat 34 can be used to drive the corner fixing part 31 to deflect, and at the same time, the two groups of corner fixing parts 31 can symmetrically adjust their deflection states by the elastic deformation of the spring 35.

[0024] In this embodiment, the corner fixing part 31 faces the bottom corner of the iron core 40, and both side faces of the corner fixing part 31 facing the iron core 40 are arranged as arc surfaces. During the process of the pressing plate 21 pressing down and tightly pressing the iron core 40, the bottom corner of the iron core 40 can be in contact with the arc surface of the corner fixing part 31, and the iron core is limited and fixed by the two groups of corner fixing parts 31 and the pressing plate 21. An extension part 311 is formed by extending the bottom of the corner fixing part 31 downward, and the hanging shaft 33 is inserted into the bottom of the extension part 311.

[0025] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A transformer core fixing bracket, characterized in that, It includes a placement base (10), a top fixator (20) and a bottom corner fixator (30). An iron core (40) is placed inside the placement base (10). The bottom corner fixator (30) is installed on the inner bottom of the placement base (10), and the top fixator (20) is installed on the inner top of the placement base (10). And the bottom corner fixator (30) and the top fixator (20) cooperate to limit and fix the iron core (40) located between them. Among them, the top fixator (20) includes a pressing plate (21) and a lifting adjustment structure. The pressing plate (21) is connected below the lifting adjustment structure, so that the height position of the pressing plate (21) can be adjusted by the lifting adjustment structure. Among them, the bottom corner fixator (30) includes two groups of corner fixing parts (31), a positioning rotating shaft (32), a hanging shaft (33), a deflecting seat (34) and a spring (35). The middle parts of the two groups of corner fixing parts (31) are respectively rotatably connected to the placement base (10) by a positioning rotating shaft (32). The two groups of deflecting seats (34) are respectively rotatably connected to the bottom of the corner fixing parts (31) by a hanging shaft (33). The opposite sides of the two groups of deflecting seats (34) are respectively fixedly connected to both ends of the spring (35), so that the two groups of corner fixing parts (31) symmetrically adjust their deflection states by the elastic deformation of the spring (35).

2. The fixing bracket for a transformer core according to claim 1, characterized in that: The corner fixing part (31) faces the bottom corner of the iron core (40), and both side surfaces of the corner fixing part (31) facing the iron core (40) are set as arc surfaces. The bottom of the corner fixing part (31) extends downward to form an extension part (311), and the hanging shaft (33) is inserted into the bottom of the extension part (311).

3. The fixing bracket for a transformer core according to claim 1, wherein: The lifting adjustment structure includes a positioning ring (22), a limiting ring (23) and a threaded rod (24). The threaded rod (24) is threadedly connected to the top of the placement base (10). The lower end of the threaded rod (24) rotatably passes through the limiting ring (23) and extends into the positioning ring (22). The lower end of the limiting ring (23) is inserted into the inner top of the positioning ring (22) and is fixedly connected thereto. The bottom of the positioning ring (22) is fixedly connected to the top plane of the pressing plate (21).

4. The fixing bracket for a transformer core according to claim 3, wherein: The lower end of the threaded rod (24) forms a convex ring (241) with a diameter larger than that of the threaded rod (24), and the diameter of the convex ring (241) is larger than the inner diameter of the limiting ring (23) and smaller than the inner diameter of the positioning ring (22).

5. A transformer core fixing bracket according to claim 3 or 4, characterized in that: The top end of the threaded rod (24) is also detachably and fixedly connected with a handle (242), and the handle (242) is located above the placement base (10).

6. The fixing bracket for a transformer core according to claim 1, characterized in that: The length and width of the pressing plate (21) are respectively adapted to the length and width of the iron core (40).

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