Permanent magnet direct drive motor device

Abstract

The utility model relates to motor technical field discloses a kind of permanent magnet direct drive motor device. This kind of permanent magnet direct drive motor device includes: bracket, the top of the bracket is fixedly installed with shell, the top of the shell is inserted and installed with fixing bolt, the front and rear sides of the shell are fixedly installed with fixed frame, the center of the fixed frame is fixedly installed with limit bearing, the center of the limit bearing is fixedly installed with main shaft, the outer side of the main shaft is fixedly installed with iron core, the inside of the iron core is inserted and installed with permanent magnet, filter core is mirror image symmetry installed on the front and rear sides of the front and rear end fixed frame of shell by fixed ring, connecting bolt, and the relative friction between main shaft and filter core is reduced when rotating by connecting bearing, filter core is conical structure, so that air is filtered before air enters shell, this mode can ensure air intake while avoiding external dust and other substances into the inside of shell under the driving of airflow, to improve heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a permanent magnet direct drive motor device. Background Technology

[0002] Compared to traditional motor structures, permanent magnet direct drive motors employ a direct drive method, eliminating the energy losses associated with traditional transmission devices (such as gearboxes and couplings), thereby improving overall transmission efficiency. Furthermore, because permanent magnet direct drive motors use permanent magnet materials as the excitation source, they possess higher magnetic field strength and magnetic energy density, further enhancing motor efficiency.

[0003] A relevant reference is Chinese utility model patent CN221227305U, which discloses a permanent magnet direct-drive motor for a flotation machine. The motor includes: a housing assembly containing a stator, a rotor within the stator, and a hollow shaft within the rotor. The non-driving end of the hollow shaft has a self-aligning roller bearing, and the driving end has an angular contact bearing; a connecting device located on the outside of the housing assembly, one end of which is connected to a gas source device, and the other end connected to the non-driving end of the hollow shaft; an air-cooling device located on the top of the housing assembly for heat dissipation; a coupling located at the driving end of the hollow shaft for connecting the driving end to the flotation machine's stirring shaft; and a seal between the connecting device and the air-cooling device. This permanent magnet direct-drive motor has a simple structure, is easy to assemble and disassemble, requires no other auxiliary parts, facilitates maintenance, reduces maintenance time and costs, ensures overall cooling effect, and guarantees reliable and stable motor operation.

[0004] Ventilation openings are installed inside or outside the motor, and external air is introduced into the motor using a fan or air duct. To prevent external dust from entering the casing, the ventilation openings are small and need to be covered with filters. Due to the limited size of the ventilation openings, the heat dissipation efficiency is not high. In addition, the shaft needs to drive the fan blades to rotate. Currently, most fan blades are located at one end of the motor. The fan blades have a large area and need to bear the force to drive the fan blades to rotate when the shaft rotates, which affects the output efficiency of the shaft. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the prior art, this utility model provides a permanent magnet direct drive motor device, which has the advantages of improving power output efficiency and heat dissipation, thus solving the above-mentioned technical problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a permanent magnet direct drive motor device, comprising: a bracket, a housing fixedly mounted on the top of the bracket, a fixing bolt inserted into the top of the housing, fixing frames fixedly mounted on the front and rear sides of the housing, a limit bearing fixedly mounted at the center of the fixing frame, a main shaft fixedly mounted at the center of the limit bearing, an iron core fixedly mounted on the outer side of the main shaft, a permanent magnet inserted into the inside of the iron core, limit rings inserted into the front and rear sides of the main shaft, pins inserted into the top of the limit rings, fan blades fixedly mounted on the outer side of the iron core, a limit frame fitted inside the housing, a coil wound inside the limit frame, a filter element fitted into one side of the fixing frame, a connecting bearing fitted into the center of the filter element, a fixing ring fitted into the outer side of the filter element, and a connecting bolt inserted into the front side of the fixing ring; the fixing ring can restrict the position of the filter element.

[0009] As a preferred embodiment of this utility model, the outer shell is mounted in a mirror image and the outer shells are fixedly connected by fixing bolts. The fixing bracket is mounted symmetrically at the front and rear ends of the outer shell by fixing bolts. The fixing bracket can restrict the position of the spindle.

[0010] As a preferred embodiment of this utility model, the main shaft is rotatably connected to the fixed frame via a limiting bearing, and the iron core is composed of arranged iron sheets; the main shaft can easily output power.

[0011] As a preferred technical solution of this utility model, the permanent magnet is installed in an "X" shape inside the iron core with the center of the iron core as the reference, and the fan blade is installed at equal distances from the center of the iron core on the outside of the iron core, with the fan blade located between adjacent limiting frames; the fan blade can generate airflow.

[0012] As a preferred embodiment of this utility model, the upper and lower ends of the limiting frame are provided with protruding structures, and the bottom of the inner shell is provided with a recess that fits into the protruding structures of the limiting frame; the outer shell can limit the position of the limiting frame.

[0013] As a preferred embodiment of this utility model, the limiting frame is installed equidistantly at the front and rear of the housing, and the coil is wound in a ring around the inside of the limiting frame with the center of the limiting frame as the reference; the limiting frame can restrict the position of the coil.

[0014] As a preferred technical solution of this utility model, the surface of the fixing frame is provided with an opening structure, and the filter element is installed symmetrically on the front and rear sides of the fixing frame at the front and rear ends of the outer shell through fixing rings and connecting bolts; the connecting bolts can facilitate the fixing rings and fixing frame to be fixedly connected.

[0015] Compared with the prior art, this utility model provides a permanent magnet direct drive motor device, which has the following features:

[0016] Beneficial effects:

[0017] 1. This utility model uses a limiting frame. There are three limiting frames installed at equal intervals in the front and back inside the outer shell, leaving a certain gap between the coils. The fan blades are located between adjacent limiting frames. Since the fan blades are installed at equal intervals in the front and back on the outside of the iron core with the center of the iron core as the reference, when the iron core is driven by magnetic force to drive the main shaft to rotate, it will drive the fan blades to rotate. The airflow generated by the fan blades on the front and back sides when rotating will dissipate heat from the coil after the coil is energized. This method can reduce the area of ​​a single blade, thereby reducing the resistance of the fan blade when rotating, and thus improving the output efficiency of the main shaft.

[0018] 2. This utility model features a fixed frame that is symmetrically mounted on the front and rear ends of the housing using fixing bolts. The fixed frame has an open structure on its surface. The filter element is symmetrically mounted on the front and rear sides of the fixed frame at the front and rear ends of the housing using fixing rings and connecting bolts. The connecting bearing reduces the relative friction between the main shaft and the filter element during rotation. The filter element has a conical structure, thus filtering the air before it enters the housing. This method can ensure the air intake while preventing external dust and other substances from entering the interior of the housing under the influence of airflow, thereby improving heat dissipation efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the mounting structure of the fixing frame of this utility model;

[0021] Figure 3 This is a schematic diagram of the fan blade installation structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the filter element installation structure of this utility model;

[0023] The components are: 1. Bracket; 11. Housing; 12. Fixing bolt; 13. Fixing frame; 14. Limit bearing; 15. Main shaft; 16. Iron core; 17. Permanent magnet; 18. Limit ring; 19. Pin; 110. Fan blade; 111. Limiting frame; 112. Coil; 113. Filter element; 114. Connecting bearing; 115. Fixing ring; 116. Connecting bolt. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0025] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Please see Figure 1 - Figure 4 In this embodiment, a permanent magnet direct drive motor device includes: a bracket 1, a housing 11 fixedly mounted on the top of the bracket 1, a fixing bolt 12 inserted through the top of the housing 11, fixing frames 13 fixedly mounted on the front and rear sides of the housing 11, a limit bearing 14 fixedly mounted at the center of the fixing frame 13, a main shaft 15 fixedly mounted at the center of the limit bearing 14, an iron core 16 fixedly mounted on the outer side of the main shaft 15, and a permanent magnet 17 inserted through the inside of the iron core 16. A limiting ring 18 is inserted and installed, and a pin 19 is inserted and installed above the limiting ring 18. A fan blade 110 is fixedly installed on the outside of the iron core 16. A limiting frame 111 is fitted inside the outer shell 11. A coil 112 is wound inside the limiting frame 111. A filter element 113 is fitted and installed on one side of the fixing frame 13. A connecting bearing 114 is fitted and installed in the center of the filter element 113. A fixing ring 115 is fitted and installed on the outside of the filter element 113. A connecting bolt 116 is inserted and installed on the front side of the fixing ring 115.

[0028] The outer casing 11 is mounted in a mirror image, and the outer casings 11 are fixedly connected by fixing bolts 12. The fixing frame 13 is mounted symmetrically at the front and rear ends of the outer casing 11 in a mirror image, and the main shaft 15 is rotatably connected to the fixing frame 13 through the limit bearing 14. The iron core 16 is composed of arranged iron sheets. The permanent magnet 17 is mounted in an "X" shape inside the iron core 16 with the center of the iron core 16 as the reference. The fan blades 110 are mounted equidistantly on the outside of the iron core 16 with the center of the iron core 16 as the reference. The fan blades 110 are located at adjacent limit bearings. Between the position frames 111, the upper and lower ends of the position frame 111 are provided with protruding structures, and the bottom of the inner shell 11 is provided with a recess that fits into the protruding structure of the position frame 111. The position frames 111 are installed equidistantly in the inner shell 11. The coil 112 is wound in a ring around the inner shell of the position frame 111 with the center of the position frame 111 as the reference. The surface of the fixing frame 13 is provided with an opening structure. The filter element 113 is installed symmetrically in the front and rear sides of the fixing frame 13 at the front and rear ends of the outer shell 11 through the fixing ring 115 and the connecting bolt 116.

[0029] Specifically, the bracket 1 can limit the position of the outer shell 11, the outer shell 11 can limit the position of the limiting frame 111, the coil 112 is wound inside the limiting frame 111, there are three limiting frames 111 installed equidistantly inside the outer shell 11, the fan blade 110 is located between adjacent limiting frames 111, the fixing frame 13 can limit the position of the main shaft 15 through the limiting bearing 14, the limiting bearing 14 can reduce the friction between the main shaft 15 and the fixing frame 13 when the main shaft 15 rotates, the iron core 16 can limit the position of the permanent magnet 17, and through the coil When the coil 112 is energized, the magnetic poles of the coil 112 and the permanent magnet 17 change, causing the iron core 16 to drive the main shaft 15 to rotate. When the main shaft 15 rotates, the fan blades 110 on the outside of the iron core 16 will rotate synchronously, generating airflow. The relative friction between the main shaft 15 and the filter element 113 is reduced by the connecting bearing 114. The filter element 113 has a conical structure. The filter element 113 is mirror-symmetrically installed on one side of the front and rear fixing brackets 13 by the fixing ring 115 and the connecting bolt 116, thereby filtering the air before it enters the outer casing 11.

[0030] In use, three limit frames 111 are installed equidistantly inside the housing 11, leaving a certain gap between the coils 112. The fan blades 110 are located between adjacent limit frames 111. Since the fan blades 110 are equidistantly installed on the outside of the iron core 16 with the center of the iron core 16 as the reference, when the magnetic force drives the iron core 16 to rotate the main shaft 15, it will drive the fan blades 110 to rotate. The airflow generated by the rotating fan blades 110 on both sides dissipates heat from the coil 112 after it is energized. This method reduces the area of ​​a single blade of the fan blade 110, thereby reducing the resistance of the fan blade 110 during rotation and improving the efficiency of the main shaft 112. With an output efficiency of 5, the mounting bracket 13 is mounted symmetrically at both ends of the housing 11 via fixing bolts 12. The surface of the mounting bracket 13 is provided with an open structure. The filter element 113 is mounted symmetrically at both ends of the housing 11 via fixing rings 115 and connecting bolts 116. The relative friction between the main shaft 15 and the filter element 113 is reduced by connecting bearings 114 when the main shaft 15 rotates. The filter element 113 has a conical structure, which filters the air before it enters the housing 11. This method can ensure the air intake while preventing external dust and other substances from entering the interior of the housing 11 under the influence of airflow, thereby improving heat dissipation efficiency.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet direct drive motor device, characterized in that, include: A bracket (1) is provided, with a housing (11) fixedly mounted on top of the bracket (1). A fixing bolt (12) is inserted through the top of the housing (11). Fixing frames (13) are fixedly mounted on the front and rear sides of the housing (11). A limit bearing (14) is fixedly mounted at the center of the fixing frame (13). A main shaft (15) is fixedly mounted at the center of the limit bearing (14). An iron core (16) is fixedly mounted on the outer side of the main shaft (15). A permanent magnet (17) is inserted through the inside of the iron core (16). Limit rings (18) are inserted through the front and rear sides of the main shaft (15). A pin (19) is inserted above the limiting ring (18), a fan blade (110) is fixedly installed on the outside of the iron core (16), a limiting frame (111) is fitted inside the outer shell (11), a coil (112) is wound inside the limiting frame (111), a filter element (113) is fitted on one side of the fixing frame (13), a connecting bearing (114) is fitted in the center of the filter element (113), a fixing ring (115) is fitted on the outside of the filter element (113), and a connecting bolt (116) is inserted on the front side of the fixing ring (115).

2. The permanent magnet direct drive motor device according to claim 1, characterized in that: The outer shell (11) is installed in a mirror image from top to bottom, and the outer shells (11) are fixedly connected to each other by fixing bolts (12). The fixing bracket (13) is installed symmetrically at the front and rear ends of the outer shell (11) by fixing bolts (12).

3. The permanent magnet direct drive motor device according to claim 1, characterized in that: The main shaft (15) is rotatably connected to the fixed frame (13) through the limiting bearing (14), and the iron core (16) is composed of iron sheets arranged in a row.

4. The permanent magnet direct drive motor device according to claim 1, characterized in that: The permanent magnet (17) is installed in an "X" shape inside the iron core (16) with the center of the iron core (16) as the reference. The fan blade (110) is installed at equal distances from the center of the iron core (16) on the outside of the iron core (16), and the fan blade (110) is located between adjacent limit frames (111).

5. A permanent magnet direct drive motor device according to claim 1, characterized in that: The upper and lower ends of the limiting frame (111) are provided with protruding structures, and the bottom of the inner shell (11) is provided with a recess that fits into the protruding structure of the limiting frame (111).

6. The permanent magnet direct drive motor device according to claim 1, characterized in that: The limiting frame (111) is installed at equal intervals in front and behind inside the outer shell (11), and the coil (112) is wound in a ring around the inside of the limiting frame (111) with the center of the limiting frame (111) as the reference.

7. A permanent magnet direct drive motor device according to claim 1, characterized in that: The surface of the fixing frame (13) is provided with an opening structure, and the filter element (113) is installed symmetrically on the front and rear sides of the fixing frame (13) at the front and rear ends of the outer shell (11) by means of fixing ring (115) and connecting bolt (116).

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