A motor rotor lamination stacking structure

Abstract

The utility model relates to rotor core assembly technical field, concretely discloses a motor rotor punching sheet lamination structure, including the base plate, the top middle part fixed connection positioning column of base plate, both sides of the top of base plate all are fixedly connected with the positioning rod, and the punching sheet structure is connected on the base plate, and the through -hole that is adapted with the positioning rod, positioning column is respectively set up on the punching sheet structure, sets up a plurality of heat dissipation mouths on the surface of positioning column, and the inside bearing component of positioning column is provided. Through setting up the positioning rod and positioning column on the base plate, make the precision of punching sheet structure in assembling formula have the promotion, set up a plurality of heat dissipation mouths on the surface of positioning column simultaneously, and combine the heat dissipation structure of base plate bottom, and the heat dissipation structure enters the inside of positioning column through blowing, at this moment, the airflow passes through the heat dissipation mouth and spreads outwards, improves motor overload capacity.

Description

Technical Field

[0001] This utility model relates to the field of rotor core assembly technology, and in particular to a motor rotor lamination stacking structure. Background Technology

[0002] A search revealed patent number CN202223118918.5, which describes a rotor lamination stacking fixture. The fixture includes an upper pressure plate, a lower pressure plate, and a shaft core. The shaft core is vertically connected to the lower pressure plate for inserting a plurality of rotor laminations. It also includes a positioning plate and a first locking assembly. The positioning plate passes through the rotor laminations for positioning. The lower pressure plate has a plurality of first locking holes, and the first locking assembly passes through these holes and the rotor laminations to detachably lock the pressed rotor laminations. The upper pressure plate is fitted onto the shaft core and positioned above the rotor laminations to press them firmly. This invention improves the stacking accuracy, prevents magnets from failing to embed, and ensures optimal rotational dynamic balance of the stacked rotor laminations, reducing the need for scrap and rework.

[0003] The aforementioned patent has been found to have the following problems in actual use: the equipment will generate more heat during operation, which will cause the electromagnetic performance to degrade and the mechanical reliability to decrease; and no corresponding ventilation or heat dissipation components have been set up to address this issue.

[0004] Therefore, we propose a motor rotor lamination stacking structure. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] This utility model provides a motor rotor lamination stacking structure that can solve the problem of insufficient heat dissipation performance. The specific solution is as follows:

[0007] A motor rotor lamination stacking structure includes a base plate, a positioning post fixedly connected to the center of the top of the base plate, positioning rods fixedly connected to both sides of the top of the base plate, lamination structures connected to the base plate, and through holes adapted to the positioning rods and positioning post respectively on the lamination structures; several heat dissipation vents are formed on the surface of the positioning post, and a load-bearing component is provided inside the positioning post. The load-bearing component includes multiple sets of reinforcing ribs, which are vertically distributed and connected to each other by mounting rods. Several sets of mounting rods are distributed along the central circumference of the outer side of the reinforcing ribs, and the ends of the mounting rods are in contact with the inner wall of the positioning post. Support rods are fixedly connected to adjacent reinforcing ribs.

[0008] As a preferred embodiment of this utility model, a connecting cylinder is fixedly installed at the bottom center of the substrate, a frame is fixedly connected to the top of the inner part of the connecting cylinder, a fan is fixedly installed in the middle of the frame, and the central axis of the fan corresponds to the central axis of the positioning column.

[0009] As a preferred technical solution of this utility model, the fan drives the airflow to enter the interior of the positioning column and delivers it outward through several heat dissipation vents. Several sets of threads are opened on the top outer surface of the positioning column, and the positioning column is a steel structure.

[0010] As a preferred technical solution of this utility model, a locking piece is provided at the top of the positioning post away from the positioning post, the inner bottom wall of the locking piece is in contact with the top of the stamping structure, and a gasket is preset on the inner bottom wall of the locking piece.

[0011] As a preferred embodiment of this utility model, the middle part of the locking piece is hollow, and the middle part of the locking piece is spirally connected to the thread.

[0012] As a preferred technical solution of this utility model, the preset gasket at the bottom of the locking plate is a silicone rubber elastic gasket with a thickness of 1-2mm, and the upper and lower end faces of the gasket are provided with anti-slip textures that are compatible with the top surface of the punch structure and the inner bottom wall of the locking plate.

[0013] As a preferred technical solution of this utility model, the fixed connection between the substrate and the positioning rod and positioning column is integrally formed or welded. If it is welded, the weld seam needs to be rust-proofed.

[0014] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0015] By setting positioning rods and positioning posts on the substrate, the assembly accuracy of the stamping structure is improved. At the same time, several heat dissipation vents are opened on the surface of the positioning posts, and combined with the heat dissipation structure at the bottom of the substrate, the heat dissipation structure blows air into the interior of the positioning posts, and the airflow is dissipated outward through the heat dissipation vents, thereby improving the motor overload capacity.

[0016] By adding load-bearing components inside the positioning column, multiple reinforcing ribs are connected to form a three-dimensional frame structure to increase the stress area. When the lamination assembly expands thermally, this structure can evenly distribute thermal stress to all reinforcing ribs and the inner wall, avoiding cracks and fractures caused by excessive local stress in traditional positioning columns.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is a schematic diagram showing the overall structure of this utility model broken down.

[0020] Figure 2 This is a schematic diagram of the overall structure and connection of this utility model;

[0021] Figure 3 This is a schematic diagram of the reinforcing rib structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the connecting cylinder of this utility model;

[0023] The accompanying figure is labeled as follows:

[0024] 1. Base plate; 2. Positioning rod; 3. Positioning post; 4. Heat dissipation vent; 5. Thread; 6. Stamped structure; 7. Locking plate; 8. Fan; 9. Connecting cylinder; 10. Frame; 11. Mounting rod; 12. Support rod; 13. Reinforcing rib. Detailed Implementation

[0025] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and, together with the embodiments of the present invention, serve to illustrate the principles of the present invention.

[0026] See Figures 1-4 This utility model provides a motor rotor lamination stacking structure, including a base plate 1, a positioning post 3 fixedly connected to the top center of the base plate 1, positioning rods 2 fixedly connected to both sides of the top of the base plate 1, a lamination structure 6 connected to the base plate 1, and through holes adapted to the positioning rods 2 and positioning post 3 respectively on the lamination structure 6; a plurality of heat dissipation vents 4 are opened on the surface of the positioning post 3, and a load-bearing component is set inside the positioning post 3. The load-bearing component includes multiple sets of reinforcing ribs 13, which are vertically distributed, and mounting rods 11 are fixedly connected between the connected reinforcing ribs 13. A plurality of mounting rods 11 are distributed along the central circumference of the outer side of the reinforcing ribs 13, and the ends of the mounting rods 11 are in contact with the inner wall of the positioning post 3. Support rods 12 are fixedly connected between adjacent reinforcing ribs 13.

[0027] A connecting cylinder 9 is fixedly installed at the bottom center of the base plate 1. A frame 10 is fixedly connected to the top of the inside of the connecting cylinder 9. A fan 8 is fixedly installed in the middle of the frame 10. The central axis of the fan 8 corresponds to the central axis of the positioning column 3.

[0028] After being driven by the fan 8, the air force generated can enter the interior of the positioning post 3 and be transported outward through several heat dissipation vents 4. Several sets of threads 5 are opened on the top outer surface of the positioning post 3. The positioning post 3 is a steel structure.

[0029] A locking piece 7 is installed at the top of the part away from the positioning post 3. The inner bottom wall of the locking piece 7 fits against the top of the lamination structure 6. A shim is pre-installed on the inner bottom wall of the locking piece 7. Through the forced heat dissipation structure formed by the fan 8, the internal channel of the positioning post 3 and the heat dissipation port 4, the airflow can directly penetrate the interior of the lamination stack, reducing the working temperature of the iron core by 30-40℃, reducing iron loss by 15-20%, effectively avoiding demagnetization of the permanent magnet and aging of the insulation layer, and extending the continuous running time of the motor by more than 50%.

[0030] The pre-set gasket at the bottom of the locking plate 7 is a silicone rubber elastic gasket with a thickness of 1-2mm. The upper and lower end faces of the gasket are provided with anti-slip textures that are compatible with the top face of the punch structure 6 and the inner bottom wall of the locking plate 7.

[0031] The base plate 1 is fixedly connected to the positioning rod 2 and positioning post 3 by integral molding or welding. If it is welded, the weld seam must be treated with rust prevention.

[0032] Through the forced heat dissipation structure formed by the fan 8, the internal channel of the positioning column 3 and the heat dissipation port 4, the airflow can directly penetrate the interior of the lamination stack, reducing the working temperature of the iron core by 30-40℃ and reducing iron loss by 15-20%, effectively avoiding demagnetization of permanent magnets and aging of insulation layer.

[0033] The locking plate 7 has a hollow structure in the middle, and the middle part of the locking plate 7 is spirally connected to the thread 5. After the lamination structure 6 is completely placed on the base plate 1, it is fixed to the end of the positioning post 3 by the locking plate 7. At this time, the bottom wall of the locking plate 7 and the top of the lamination structure 6 are fixed together. As the locking plate 7 is rotated, it connects with the thread 5 on the positioning post 3, which can firmly lock the lamination structure 6 on the top of the base plate 1, improving the firmness. The design of the locking plate 7 in conjunction with the gasket ensures the stacking tightness through controllable clamping force, and avoids scratches on the lamination caused by direct metal contact. At the same time, the gasket can compensate for the stacking height deviation of ±0.3mm, so that the total height tolerance of the rotor is controlled within ±0.02mm. The double positioning (positioning post 3 + positioning rod 2) design further improves the coaxiality and flatness of the lamination stacking.

[0034] By setting positioning rods 2 and positioning posts 3 on the substrate 1, the assembly accuracy of the stamping structure 6 is improved. At the same time, several heat dissipation holes are opened on the surface of the positioning posts, and combined with the heat dissipation structure at the bottom of the substrate, the heat dissipation structure blows air into the interior of the positioning posts. At this time, the airflow is dissipated outward through the heat dissipation holes, which improves the motor overload capacity.

[0035] By adding load-bearing components inside the positioning column 3, multiple reinforcing ribs 13 are interconnected to form a three-dimensional frame structure to increase the stress area. When the lamination assembly expands thermally, this structure can evenly distribute thermal stress to all reinforcing ribs 13 and the inner wall, avoiding cracks and fractures caused by excessive local stress in traditional positioning columns.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0038] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A motor rotor lamination stacking structure, characterized in that: The system includes a base plate (1), a positioning post (3) is fixedly connected to the top center of the base plate (1), positioning rods (2) are fixedly connected to both sides of the top of the base plate (1), a stamping structure (6) is connected to the base plate (1), and through holes adapted to the positioning rods (2) and positioning post (3) are respectively opened on the stamping structure (6); several heat dissipation vents (4) are opened on the surface of the positioning post (3), and a load-bearing component is provided inside the positioning post (3). The load-bearing component includes multiple sets of reinforcing ribs (13), the multiple sets of reinforcing ribs (13) are vertically distributed, and mounting rods (11) are fixedly connected between the connected reinforcing ribs (13). Several sets of mounting rods (11) are distributed along the central circumference of the outer side of the reinforcing ribs (13), and the ends of the mounting rods (11) are in contact with the inner wall of the positioning post (3). Support rods (12) are fixedly connected between adjacent reinforcing ribs (13).

2. The motor rotor lamination stacking structure as described in claim 1, characterized in that: A connecting cylinder (9) is fixedly installed at the bottom center of the substrate (1). A frame (10) is fixedly connected to the top of the inner part of the connecting cylinder (9). A fan (8) is fixedly installed in the middle of the frame (10). The central axis of the fan (8) corresponds to the central axis of the positioning column (3).

3. The motor rotor lamination stacking structure as described in claim 2, characterized in that: The fan (8) generates wind that can enter the interior of the positioning column (3) and be transported outward through several heat dissipation vents (4). Several sets of threads (5) are opened on the top outer surface of the positioning column (3). The positioning column (3) is a steel structure.

4. The motor rotor lamination stacking structure as described in claim 3, characterized in that: A locking piece (7) is provided at the top of the positioning post (3) away from the top. The inner bottom wall of the locking piece (7) is in contact with the top of the punch structure (6). A gasket is preset on the inner bottom wall of the locking piece (7).

5. The motor rotor lamination stacking structure as described in claim 4, characterized in that: The locking piece (7) has a hollow structure in the middle, and the middle part of the locking piece (7) is spirally connected to the thread (5).

6. The motor rotor lamination stacking structure as described in claim 5, characterized in that: The pre-set gasket at the bottom of the locking piece (7) is a silicone rubber elastic gasket with a thickness of 1-2 mm. The upper and lower end faces of the gasket are provided with anti-slip textures that are compatible with the top surface of the punch structure (6) and the inner bottom wall of the locking piece (7).

7. The motor rotor lamination stacking structure as described in claim 5, characterized in that: The base plate (1) is fixedly connected to the positioning rod (2) and positioning column (3) by integral molding or welding. If it is welded, the weld seam needs to be rust-proofed.

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