Fixing device for iron core stacking

Abstract

The fixing device comprises a base, an iron core, a positioning plate and a heat conduction oil pipe, an upper iron yoke and a lower iron yoke are fixedly arranged at the two ends of the top of the base, the iron core is fixedly arranged on the upper iron yoke and the lower iron yoke at the top of the base, and triangular grooves are formed in silicon steel sheets on the two sides of the iron core. The positioning plate is fixedly arranged between the upper iron yoke and the lower iron yoke and located on the two sides of the iron cores, a plurality of limiting grooves corresponding to the iron cores are formed in one side of the positioning plate, two strip-shaped grooves are formed in the other side of the positioning plate, and the heat conduction oil pipes are fixedly arranged on the upper iron yoke, the lower iron yoke and the strip-shaped grooves. According to the fixing device for iron core stacking, through the arrangement of the positioning plate, when iron cores are stacked, the silicon steel sheets correspond to the limiting grooves in the positioning plate, iron core stacking is more orderly, through the arrangement of the heat conduction oil pipe, heat generated when the iron cores work can be conveyed out in time, and the heat dissipation efficiency of the iron cores is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of core stacking, in particular to a fixing device for core stacking. Background Art

[0002] The core is the main magnetic path part in a transformer. It is usually stacked by hot-rolled or cold-rolled silicon steel sheets with a relatively high silicon content and an insulating paint coated on the surface. When the transformer is working, there is a magnetic field in the core. Since the core is a ferromagnetic material, hysteresis loss and eddy current loss will be generated inside the core. When the core is in an overheated state for a long time, it will affect the service life of the core; when the core is being stacked, due to the precision problems of manual or mechanical stacking, the silicon steel sheets in the core will be misaligned, and it is easy to be damaged when the core vibrates, thus affecting the service life of the core. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a fixing device for core stacking to solve the problems of uneven stacking and poor heat dissipation effect of the existing core stacking.

[0004] To achieve the above purpose, the technical solution of the utility model is realized as follows:

[0005] The fixing device for core stacking includes:

[0006] A base, on both ends of the top of the base, an upper yoke and a lower yoke are fixedly arranged; a core is fixedly arranged on the upper yoke and the lower yoke at the top of the base, and triangular grooves are formed on the silicon steel sheets on both sides of the core; a positioning plate is fixedly arranged between the upper yoke and the lower yoke and is located on both sides of the core. On one side of the positioning plate, a plurality of limiting grooves corresponding to the core are arranged, and on the other side of the positioning plate, two strip-shaped grooves are arranged; a heat-conducting oil pipe is fixedly arranged on the upper yoke, the lower yoke and the strip-shaped grooves.

[0007] Further, at the middle position of the positioning plate, a triangular protrusion corresponding to the triangular groove is arranged on the limiting groove. On the top and bottom of both sides of the positioning plate, convex plates are arranged, and through holes are arranged through the convex plates. A pull rod is arranged through the corresponding through holes between the two positioning plates.

[0008] Further, through grooves are arranged through both ends of the upper yoke and the lower yoke close to one side of the positioning plate. Column-shaped grooves are arranged through both ends of the upper yoke and the lower yoke. At the middle position on the side of the upper yoke away from the positioning plate, two circular grooves are arranged.

[0009] Further, the convex plates at both ends of the positioning plate are respectively arranged through the through grooves of the upper yoke and the lower yoke.

[0010] Further, a plurality of fixing clips are arranged at the middle positions of the bottom of the upper yoke and the lower yoke, and a plurality of fixing clips are arranged on the strip-shaped grooves.

[0011] Further, the heat-conducting oil pipes respectively penetrate through the circular grooves and the cylindrical grooves, and the heat-conducting oil pipes are fixedly arranged on the fixing clips.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] For the fixing device for core stacking of the present utility model, through the arrangement of the positioning plate, when the core is stacked, the silicon steel sheets correspond to the limiting grooves on the positioning plate, making the core laminations neater. Through the arrangement of the heat-conducting oil pipes, the heat generated when the core works can be transported out in time, improving the heat dissipation efficiency of the core.

[0014] In addition, the triangular protrusions on the positioning plate on the limiting grooves correspond to the triangular grooves on the core laminations, avoiding the problem of left-right misalignment during core lamination, increasing the lamination effect of the core. The designs of the circular grooves and the cylindrical grooves provide a limiting channel for the installation of the heat-conducting oil pipes. The arrangement of the fixing clips fixes the heat-conducting oil pipes in the corresponding positions, avoiding the problem that the heat-conducting oil pipes are displaced and damaged by extrusion. Description of the Drawings

[0015] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0016] Figure 1 is a side view of the fixing device for core stacking according to an embodiment of the present utility model;

[0017] Figure 2 is a three-dimensional view of the fixing device for core stacking according to an embodiment of the present utility model and a sectional view of the connection part of the upper yoke, the lower yoke, the positioning plate and the heat-conducting oil pipes;

[0018] Figure 3 is a structural diagram of the positioning plate according to an embodiment of the present utility model;

[0019] Figure 4 is a partial enlarged view of the triangular grooves on the silicon steel sheets on both sides of the core according to an embodiment of the present utility model.

[0020] Description of reference numerals: 1. Base; 101. Upper yoke; 102. Lower yoke; 103. Through groove; 104. Cylindrical groove; 105. Circular groove; 2. Iron core; 201. Triangular groove; 3. Positioning plate; 301. Limit groove; 302. Strip-shaped groove; 303. Triangular protrusion; 304. Convex plate; 305. Through hole; 306. Pull rod; 4. Heat conduction oil pipe; 5. Fixed clamp. Detailed implementation manners

[0021] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0022] In the description of the present utility model, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0024] This embodiment relates to a fixing device for stacking iron cores. In terms of the overall structure, as Figure 1 and Figure 2 shown, it includes a base 1, an iron core 2, a positioning plate 3, and a heat conduction oil pipe 4.

[0025] Among them, upper yoke 101 and lower yoke 102 are fixedly arranged at both ends of the top of base 1, iron core 2 is fixedly arranged on upper yoke 101 and lower yoke 102 at the top of base 1, triangular grooves 201 are formed on the silicon steel sheets on both sides of iron core 2, positioning plate 3 is fixedly arranged between upper yoke 101 and lower yoke 102 and is located on both sides of iron core 2, a plurality of limit grooves 301 corresponding to iron core 2 are arranged on one side of positioning plate 3, two strip-shaped grooves 302 are arranged on the other side of positioning plate 3, and heat conduction oil pipe 4 is fixedly arranged on upper yoke 101, lower yoke 102 and strip-shaped groove 302.

[0026] It is worth mentioning that the two upper yokes 101 and the two lower yokes 102 are respectively connected by locking bolts, which is a common way to fix the iron core 2 in the prior art and will not be elaborated here. The upper yoke 101 and the lower yoke 102 are respectively installed on the base 1, which plays a role in supporting and fixing the laminations of the iron core 2. The positioning plates 3 are installed between the upper yoke 101 and the lower yoke 102 and on both sides of the iron core 2. The limiting grooves 301 on the positioning plates 3 correspond to the outer edges of the iron core 2, which play a role in limiting the lamination process of the iron core 2, making the laminations of the iron core 2 more neat. The heat conduction oil pipes 4 are successively wound and installed on the positioning plates 3, the upper yoke 101, and the lower yoke 102, which can transfer the heat generated by the iron core 2 and play a role in dissipating heat from the yokes.

[0027] Preferably, as Figure 2 and Figure 3 shown, in this embodiment, at the middle position of the positioning plate 3, a triangular protrusion 303 corresponding to the triangular groove 201 is provided on the limiting groove 301. On both the top and bottom of both sides of the positioning plate 3, convex plates 304 are provided, and through holes 305 are provided through the convex plates 304. A pull rod 306 is provided through the corresponding through holes 305 between the two positioning plates 3. Through grooves 103 are provided through both ends of the upper yoke 101 and the lower yoke 102 close to the side of the positioning plate 3. The convex plates 304 at both ends of the positioning plate 3 are respectively provided through the through grooves 103 of the upper yoke 101 and the lower yoke 102.

[0028] It should be noted that the triangular protrusion 303 on the positioning plate 3 corresponds to the triangular groove 201 on the outside of the iron core 2. When laminating the iron core 2, the triangular groove 201 on the iron core 2 is installed on the triangular protrusion 303 on the limiting groove 301 of the positioning plate 3, making the laminations more neat and avoiding the phenomenon of left - right dislocation of the laminations. The convex plates 304 at both ends of the positioning plate 3 are respectively installed in the through grooves 103 corresponding to the upper yoke 101 and the lower yoke 102. The pull rod 306 is installed on the corresponding convex plates 304 between the two positioning plates 3 and is fixed to the through holes 305 of the convex plates 304 by nuts. Under the action of the pull rod 306, the positioning plate 3 is fixed on the upper yoke 101 and the lower yoke 102, and the positioning plate 3 presses the iron core 2 to prevent the laminations from being misaligned when the iron core 2 vibrates.

[0029] Preferably, still as Figure 1 and Figure 2As shown in the figure, in this embodiment, cylindrical grooves 104 are provided through both ends of the upper yoke 101 and the lower yoke 102, and two circular grooves 105 are provided at the middle position on the side of the upper yoke 101 away from the positioning plate 3. A plurality of fixing clips 5 are provided at the middle position of the bottom of the upper yoke 101 and the lower yoke 102, and a plurality of fixing clips 5 are provided on the strip-shaped groove 302. The heat-conducting oil pipes 4 are respectively provided through the circular grooves 105 and the cylindrical grooves 104, and the heat-conducting oil pipes 4 are fixedly arranged on the fixing clips 5.

[0030] Specifically, when the heat-conducting oil pipes 4 are laid, they are successively coiled around the upper yoke 101, the lower yoke 102 on the same side and the strip-shaped groove 302 of the corresponding positioning plate 3. The heat-conducting oil pipes 4 on the upper yoke 101, the lower yoke 102 and the strip-shaped groove 302 are all fixed by the fixing clips 5. The heat-conducting oil pipe 4 penetrates into one circular groove 105 of the upper yoke 101, is laid on the upper yoke 101, and penetrates out of the cylindrical groove 104 near the corresponding circular groove 105 at one end of the upper yoke 101. Then it is laid on the corresponding strip-shaped groove 302 on the positioning plate 3 to the bottom of the cylindrical groove 104 at one end of the lower yoke 102. After that, it penetrates into the cylindrical groove 104 at one end of the lower yoke 102, is laid on the lower yoke 102 to the cylindrical groove 104 at the other end and then penetrates out. The heat-conducting oil pipe 4 after penetration is laid on the corresponding strip-shaped groove 302 of another positioning plate 3 to the bottom of the cylindrical groove 104 at the other end of the upper yoke 101, penetrates into the cylindrical groove 104 and is laid on the upper yoke 101 to another circular groove 105 and then penetrates out. The circular grooves 105 and the cylindrical grooves 104 provide a limiting channel for the installation of the heat-conducting oil pipes 4 on the upper yoke 101 and the lower yoke 102, and the fixing clips 5 play a fixing role in laying the heat-conducting oil pipes 4, so that the heat-conducting oil pipes 4 are fixed at the corresponding positions of the positioning plate 3, the upper yoke 101 and the lower yoke 102.

[0031] For the fixing device for core stacking of the present utility model, through the setting of the positioning plate 3, when the core 2 is stacked, the silicon steel sheets correspond to the limiting grooves 301 on the positioning plate 3, making the core laminations of the core 2 more neat. Through the setting of the heat-conducting oil pipes 4, the heat generated when the core 2 works can be transported out in time, improving the heat dissipation efficiency of the core 2.

[0032] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fixing device for core stacking, characterized in that, Comprising: A base (1), with an upper yoke (101) and a lower yoke (102) fixedly arranged at both ends of the top of the base (1); A core (2), fixedly arranged on the upper yoke (101) and the lower yoke (102) at the top of the base (1), and triangular grooves (201) are formed on the silicon steel sheets on both sides of the core (2); A positioning plate (3), fixedly arranged between the upper yoke (101) and the lower yoke (102) and on both sides of the core (2). A plurality of limiting grooves (301) corresponding to the core (2) are arranged on one side of the positioning plate (3), and two strip-shaped grooves (302) are arranged on the other side of the positioning plate (3); A heat-conducting oil pipe (4), fixedly arranged on the upper yoke (101), the lower yoke (102) and the strip-shaped grooves (302).

2. The fixing device for core stacking according to claim 1, characterized in that: At the middle position of the positioning plate (3) on the limiting grooves (301), there are triangular protrusions (303) corresponding to the triangular grooves (201). On the top and bottom of both sides of the positioning plate (3), there are convex plates (304) and through holes (305) penetrating through the convex plates (304). A pull rod (306) penetrates through the corresponding through holes (305) between the two positioning plates (3).

3. The fixing device for core stacking according to claim 2, characterized in that: Through grooves (103) are respectively penetrated through both ends of the upper yoke (101) and the lower yoke (102) close to one side of the positioning plate (3). Column-shaped grooves (104) are penetrated through both ends of the upper yoke (101) and the lower yoke (102). At the middle position on the side of the upper yoke (101) away from the positioning plate (3), there are two circular grooves (105).

4. The fixing device for core stacking according to claim 3, characterized in that: The convex plates (304) at both ends of the positioning plate (3) respectively penetrate through the through grooves (103) of the upper yoke (101) and the lower yoke (102).

5. The fixing device for core stacking according to claim 3, characterized in that: A plurality of fixing clips (5) are arranged at the middle positions of the bottoms of the upper yoke (101) and the lower yoke (102). A plurality of fixing clips (5) are arranged on the strip-shaped grooves (302).

6. The fixing device for core stacking according to claim 5, characterized in that: The heat-conducting oil pipe (4) respectively penetrates through the circular grooves (105) and the column-shaped grooves (104), and the heat-conducting oil pipe (4) is fixedly arranged on the fixing clips (5).

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