A magnetic shoe skeleton

Abstract

The utility model discloses a kind of magnetic shoe skeletons, including positioning frame, its outer surface is provided with positioning protrusion, and with limiting frame through thread hole and positioning hole fixed connection;Splicing frame, its both ends are respectively through thread hole with limiting frame and positioning frame detachably connected, the number of splicing frame can be increased or decreased according to required thickness;The limiting frame, positioning frame and splicing frame inside are all equipped with magnetic shoe installation groove, and the top end of limiting frame and positioning frame jointly forms fixed groove.This magnetic shoe skeleton, through split modular structure design, effectively solve the multiple technical bottlenecks of traditional magnetic shoe skeleton in large industrial motor application, break through the limitation of traditional fixed thickness skeleton, significantly improve product adaptability, the accurate cooperation of the design through thread hole and positioning hole, realize the quick assembly and high-precision positioning between components, both reduce the risk of gravity center deviation caused by skeleton self-weight in hoisting process, also avoid the damage of datum plane caused by artificial repeated adjustment.

Description

Technical Field

[0001] This utility model relates to the field of magnetic tile technology, specifically to a magnetic tile frame. Background Technology

[0002] As a key permanent magnet component that generates magnetic fields in the rotor or stator of a motor, the magnetic tile needs to be precisely positioned and reliably fixed through a magnetic tile frame. The frame not only needs to withstand the centrifugal force, electromagnetic force and high temperature of the magnetic tile, but also needs to maintain high-precision matching with other components of the motor to ensure uniform air gap and stable output performance.

[0003] Currently, the mainstream structure of magnetic tile frames for large industrial motors is either an integral ring frame or a multi-segment spliced ​​frame. Both are made of metal or high-strength engineering plastics and are machined or injection molded, possessing high structural strength and dimensional accuracy. However, the frame's own weight causes it to sag naturally during hoisting, requiring manual assistance to stabilize it. If not handled carefully, it can collide with the rotor reference surface, causing scratches or deformation. Furthermore, the thickness of the magnetic tile frame is a fixed value pre-designed based on the air gap length, magnetic tile size, and structural strength of a specific motor model. Once the motor design changes, such as increasing the air gap to improve heat dissipation, adapting to magnetic tiles of different thicknesses, or expanding the application scenarios, such as the need for the same series of motors to be compatible with multiple installation spaces, a new frame needs to be manufactured by re-molding.

[0004] Although segmented frames exist in existing technologies, such as dividing a ring frame into 4-8 arc segments, each of which is independently hoisted and then spliced ​​together, their design purpose is only to reduce the weight of a single hoisting operation. For example, a 200kg overall frame can be divided into 4 50kg arc segments, rather than adjusting the total thickness of the frame. The thickness of each arc segment remains a fixed value. When the motor requires a thicker frame to enhance the fixing strength of the magnetic tile or to adapt to thicker magnetic tiles, the existing segmented frames cannot meet the requirements at all, and a new design and manufacturing are necessary. Therefore, a magnetic tile frame is needed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a magnetic tile frame to solve the problems of inconvenient installation and insufficient adaptability mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a magnetic tile frame, including a limiting frame, the inner surface of which is provided with limiting protrusions;

[0007] The positioning frame has positioning protrusions on its outer surface and is fixedly connected to the limiting frame through threaded holes and positioning holes;

[0008] The splicing frame is detachably connected to the limiting frame and the positioning frame at both ends through threaded holes. The number of splicing frames can be increased or decreased according to the required thickness.

[0009] The limiting frame, positioning frame, and splicing frame are all equipped with magnetic tile mounting grooves inside, and the tops of the limiting frame and positioning frame together form a fixing groove.

[0010] Using the above technical solution, the limiting protrusion on the inner surface of the limiting frame is used to initially position the heat dissipation ring and prevent its axial displacement; the positioning protrusion on the outer surface of the positioning frame forms an arc-shaped fit with the heat dissipation ring to ensure circumferential stability during the installation of the magnetic tile; the splicing frame is detachably connected to the limiting frame and the positioning frame through threaded holes, and its number can be flexibly increased or decreased according to the actual needs of the motor, thereby adjusting the overall thickness of the frame; the arc-shaped protrusions at the top of the limiting frame and the positioning frame together form a fixing groove, which is used to accurately align with the fixing column of the motor housing to achieve rapid positioning and installation of the frame.

[0011] As a preferred technical solution of this utility model, the inner diameter of the limiting protrusion is smaller than the inner diameter of the heat dissipation ring, and the heat dissipation ring forms a limiting fit with the limiting frame through the limiting protrusion.

[0012] Using the above technical solution, the inner diameter of the limiting protrusion is designed to be smaller than the inner diameter of the heat dissipation ring, forming a stepped limiting structure. This ensures that the heat dissipation ring is fixed in the axial direction and avoids jamming due to thermal expansion. The heat dissipation ring, as the heat conduction medium between the magnetic tile and the outside world, is firmly fixed to the outside of the magnetic tile mounting groove through the cooperation of the limiting protrusion and the limiting frame, effectively absorbing the heat generated when the magnetic tile is working and dissipating it outward.

[0013] As a preferred technical solution of this utility model, the outer surface of the positioning protrusion has an arc-shaped structure, and the arc-shaped surfaces of multiple positioning protrusions are combined to form a ring structure that adapts to the heat dissipation ring.

[0014] Using the above technical solution, the outer surface of the positioning protrusion adopts an arc-shaped structure design. Multiple protrusions are combined to form a complete ring, which fits tightly with the inner wall of the heat dissipation ring. This arc-shaped fitting structure can automatically center during installation, reducing manual adjustment time and improving the concentricity of the magnetic tile installation. The arc design can also disperse the local stress on the contact surface between the magnetic tile and the heat dissipation ring, avoiding magnetic tile breakage or heat dissipation ring deformation caused by uneven force. In addition, the cooperation between the arc-shaped protrusion and the heat dissipation ring can also serve as a preliminary positioning reference for magnetic tile installation, providing auxiliary support for subsequent bolt tightening.

[0015] As a preferred technical solution of this utility model, the fixing groove is formed by the arc-shaped protrusion at the top of the limiting frame and the positioning frame for positioning and connection with the fixing column of the motor housing.

[0016] Using the above technical solution, the fixing groove is formed by the arc-shaped protrusion at the top of the limiting frame and the positioning frame, forming a positioning hole that matches the fixing column of the motor housing. During installation, the fixing column is embedded in the fixing groove, and the frame is initially fixed by the friction between the arc-shaped protrusion and the fixing column. Finally, bolts or positioning pins are used to complete the final locking. This design simplifies the installation process and improves assembly efficiency. At the same time, the multi-point contact of the arc-shaped protrusion can effectively absorb the vibration during motor operation, reduce the relative displacement between the frame and the housing, and ensure the long-term stability of the air gap of the magnetic tile.

[0017] As a preferred technical solution of this utility model, the splicing frame is provided with a rotating shaft hole in the middle for coaxial connection with the motor shaft.

[0018] With the above technical solution, the shaft hole is located at the geometric center of the splicing frame and maintains strict coaxiality with the motor spindle to ensure the rotational symmetry of the magnet after installation. This design ensures the accuracy of the hole position through machining or injection molding, avoiding uneven force and vibration noise on the magnet caused by the eccentricity of the shaft hole. The setting of the shaft hole also facilitates quick alignment during motor assembly and reduces debugging time. In addition, after the splicing frame is connected to the limit frame and positioning frame through the threaded hole, the shaft hole forms a through channel, providing a structural basis for the channel design of internal motor cables or cooling medium.

[0019] As a preferred technical solution of this utility model, a heat dissipation ring is provided on the outer side of the magnetic tile mounting groove, and the heat dissipation ring is fixedly connected to the positioning frame through a positioning protrusion.

[0020] Using the above technical solution, the heat dissipation ring forms a nested connection with the arc-shaped structure of the positioning frame through the positioning protrusion, and is further reinforced by screws or adhesives. This design allows the heat dissipation ring to be installed synchronously with the positioning frame and to be replaced separately during disassembly, reducing maintenance costs. The heat dissipation ring is usually made of high thermal conductivity alloy or ceramic composite material, and its outer surface can be designed with a corrugated or finned structure to enhance the heat dissipation area. When the magnetic tile generates eddy current heat due to the high-frequency alternating magnetic field, the heat dissipation ring can quickly conduct the heat to the motor housing or external cooling system, ensuring that the magnetic tile works stably within the allowable temperature range.

[0021] As a preferred technical solution of this utility model, the limiting frame, positioning frame and splicing frame are connected by threaded bolts, and the positioning pins are used to position and connect with the motor housing end cover through the positioning holes.

[0022] Using the above technical solution, the limiting frame, positioning frame, and splicing frame are rigidly connected by threaded bolts, ensuring the positional accuracy and load-bearing capacity between components. At the same time, the positioning pins inserted into the positioning holes form auxiliary positioning with the motor housing end cover to prevent angular deviations during installation. The bolt connection is convenient to disassemble and reassemble and has high reusability, making it suitable for motor scenarios that require periodic maintenance. The positioning pins further enhance the reliability of the connection through interference fit or elastic snap-fit. The combination of the two connection methods ensures the overall strength of the frame while meeting the installation flexibility under different working conditions.

[0023] Compared with the prior art, the beneficial effects of this utility model of magnetic tile frame are:

[0024] Through a modular, split-type structural design, several technical bottlenecks of traditional magnetic tile frames in large industrial motor applications are effectively solved. Firstly, the independent components of the limiting frame, positioning frame, and splicing frame constitute a frame system with flexibly adjustable thickness. Users can increase or decrease the number of splicing frames according to the actual needs of the motor, breaking through the limitations of traditional fixed-thickness frames and significantly improving product adaptability. This design, through the precise matching of threaded holes and positioning holes, achieves rapid assembly and high-precision positioning between components, reducing the risk of center of gravity shift caused by the frame's own weight during hoisting and avoiding damage to the reference surface caused by repeated manual adjustments, greatly shortening installation time. Secondly, the heat dissipation ring, through the arc-shaped nested structure of limiting protrusions and positioning protrusions, forms... This forms an efficient heat conduction path, which can quickly absorb the eddy current heat generated during the operation of the magnetic tile and diffuse it outward, effectively suppressing the demagnetization phenomenon caused by temperature rise of the magnet and extending the service life of the magnetic tile. Furthermore, the fixing groove is a multi-point positioning structure formed by arc-shaped protrusions, which complements the fixing column of the motor housing. This not only enhances the vibration resistance of the frame during installation, but also reduces the stress concentration of assembly through the stress dispersion characteristics of the arc surface, improving the long-term stability of the air gap of the magnetic tile. In addition, the modular design also gives the frame the maintenance advantage of being detachable and replaceable. When a single component wears out or the specifications of the magnetic tile change, there is no need to scrap the entire frame. Only the corresponding module needs to be replaced to complete the upgrade and transformation, which greatly reduces the operation and maintenance costs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0026] Figure 2 This is a schematic diagram showing the disassembled structure of the limiting frame and positioning frame of this utility model;

[0027] Figure 3 This is a schematic diagram of the fixing groove structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0029] Figure 5 This is a schematic diagram of the positioning protrusion and magnetic tile mounting groove structure of this utility model;

[0030] Figure 6 This is a schematic diagram of the overall disassembled structure of this utility model;

[0031] Figure 7 This is a schematic diagram of the disassembled structure of the fixing groove of this utility model.

[0032] In the diagram: 1. Limiting bracket; 2. Positioning bracket; 3. Splicing bracket; 4. Threaded hole; 5. Positioning hole; 6. Rotary shaft hole; 7. Magnet tile mounting groove; 8. Positioning protrusion; 9. Heat dissipation ring; 10. Limiting protrusion; 11. Fixing groove; 12. Arc-shaped protrusion. Detailed Implementation

[0033] Please see Figure 1-7 This utility model provides a technical solution: a magnetic tile frame, including a limiting frame 1, a positioning frame 2, and a splicing frame 3. The positioning frame 2 and the splicing frame 3 are respectively provided with magnetic tile mounting grooves 7 and shaft holes 6. The shaft holes 6 are located at the middle of the positioning frame 2 and the splicing frame 3 and are used to connect the motor shaft. The magnetic tile mounting grooves 7 are annularly distributed inside the positioning frame 2 and the splicing frame 3 and are used to install magnetic tiles. The top of the limiting frame 1, the positioning frame 2, and the splicing frame 3 are provided with arc-shaped protrusions 12 forming fixing grooves 11. The arc-shaped protrusions 12 are used to position the motor fixing column, and the fixing grooves 11 are used to position and install the entire frame with the motor. Furthermore, the limiting frame 1, the positioning frame 2, and the splicing frame 3 are respectively annularly distributed with positioning holes 5 and threaded holes 4. The threaded holes 4 are used for threaded bolt connections, while the positioning holes 5 are used for positioning pins to connect with the motor housing end cover. The number of splicing frames 3 is... The number of brackets can be increased according to the required thickness of the motor size. When installing the frame, first install the limiting bracket 1 and positioning bracket 2 at one end, and then install the corresponding number of splicing brackets 3. When the specified thickness is reached, fix the limiting bracket 1 and positioning bracket 2 to the other end of the splicing bracket 3. The outer surface of the magnetic tile mounting groove 7 of the positioning bracket 2 is also provided with a positioning protrusion 8. The outer surface of the positioning protrusion 8 is arc-shaped. The arc surface of each positioning protrusion 8 forms a ring structure to fit the heat dissipation ring 9. The heat dissipation ring 9 is installed on the outer surface of the corresponding limiting protrusion 10 and limits and fixes the magnetic tile in the magnetic tile mounting groove 7. The inner surface of the limiting bracket 1 is provided with a limiting protrusion 10. The inner diameter of the limiting protrusion 10 is smaller than the inner diameter of the heat dissipation ring 9. The limiting protrusion 10 can limit the heat dissipation ring 9. The heat dissipation ring 9 can absorb the heat of the magnetic tile and dissipate it outward. At the same time, it can also limit and fix the magnetic tile.

Claims

1. A magnetic tile frame, characterized in that, include The limiting frame (1) has a limiting protrusion (10) on its inner surface. The positioning frame (2) has a positioning protrusion (8) on its outer surface and is fixedly connected to the limiting frame (1) through a threaded hole (4) and a positioning hole (5); The splicing frame (3) is detachably connected to the limiting frame (1) and the positioning frame (2) at both ends through threaded holes (4). The number of splicing frames (3) can be increased or decreased according to the required thickness. The limiting frame (1), positioning frame (2) and splicing frame (3) are all provided with magnetic tile mounting grooves (7), and the top of the limiting frame (1) and the positioning frame (2) together form a fixing groove (11).

2. The magnetic tile frame according to claim 1, characterized in that: The inner diameter of the limiting protrusion (10) is smaller than the inner diameter of the heat dissipation ring (9), and the heat dissipation ring (9) forms a limiting fit with the limiting frame (1) through the limiting protrusion (10).

3. The magnetic tile frame according to claim 1, characterized in that: The outer surface of the positioning protrusion (8) has an arc-shaped structure, and the arc-shaped surfaces of multiple positioning protrusions (8) are combined to form a ring structure that adapts to the heat dissipation ring (9).

4. The magnetic tile frame according to claim 1, characterized in that: The fixing groove (11) is formed by the arc-shaped protrusion (12) at the top of the limiting frame (1) and the positioning frame (2) for positioning and connecting with the fixing column of the motor housing.

5. A magnetic tile frame according to claim 1, characterized in that: The splicing frame (3) has a pivot hole (6) in the middle for coaxial connection with the motor shaft.

6. A magnetic tile frame according to claim 1, characterized in that: The outer side of the magnetic tile mounting groove (7) is provided with a heat dissipation ring (9), and the heat dissipation ring (9) is fixedly connected to the positioning frame (2) through the positioning protrusion (8).

7. A magnetic tile frame according to claim 1, characterized in that: The limiting frame (1), positioning frame (2) and splicing frame (3) are connected by bolts through threaded holes (4) and positioned and connected to the motor housing end cover through positioning pins through positioning holes (5).

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