Air-cooled permanent magnet motor

Abstract

The air-cooled permanent magnet motor comprises an encoder, a stator and a connecting box, the stator is provided with a pair of air inlet holes and four first limiting grooves, first limiting blocks on the two sides of a first dustproof plate can be placed in the first limiting grooves, the stator is fixedly connected with four first threaded rods, and the first threaded rods are fixedly connected with the connecting box. A first pressing plate is in threaded connection with the first threads, an air outlet is formed in the upper end of the connecting box, a pair of second limiting grooves are formed in the upper end of the connecting box, second limiting blocks on the two sides of a second dustproof plate can be placed in the second limiting grooves, and a pair of second threaded rods are fixedly connected to the upper end of the connecting box; by means of the device, dust can be prevented from entering and being attached to the surface of a rotor, normal operation of a motor is not affected, and meanwhile the first dustproof plate and the second dustproof plate can be well detached to be cleaned and replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of air-cooled permanent magnet motors, in particular to an air-cooled permanent magnet motor. Background Art

[0002] The air-cooled permanent magnet motor uses permanent magnets to provide excitation, which makes the motor structure simpler, reduces processing and assembly costs, and eliminates the collector rings and brushes that are prone to problems, thereby improving the reliability of the motor operation. At the same time, the air-cooled permanent magnet motor can remove the heat inside the motor through air cooling.

[0003] A novel air-cooled permanent magnet synchronous motor disclosed in the utility model with authorization announcement number CN210469038U includes a rotor, a stator and an encoder, the inner end face of the stator is fixedly connected to the inner end face of the adapter plate, an axial hole is provided at the axial center of the adapter plate, and a cavity is provided on the inner end face of the adapter plate, a centrifugal cooling fan coaxially arranged with the rotor is built into the cavity of the adapter plate, a plurality of axial air inlet holes are provided on the stator housing, the air inlet holes are communicated with the cavity, and an air outlet is provided on the side wall of the cavity; the utility model adds a centrifugal cooling fan to the motor structure, forms an airflow circulation scheme in which the stator housing inlets air and the adapter plate outlets air in the motor, so that the airflow effectively contacts the heating components of the motor, thereby effectively controlling the temperature rise of the motor; in addition, the utility model also improves the internal structure of the motor, reduces the vibration source of the motor, and improves the smoothness of the motor operation, but when the device is in use, dust in the air will enter the cavity through the air inlet hole, and even adhere to the surface of the rotor, affecting the normal operation of the motor. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an air-cooled permanent magnet motor, which can solve the technical problem that when the device is in use, dust in the air will enter the cavity through the air inlet hole and even adhere to the rotor surface, affecting the normal operation of the motor.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: an air-cooled permanent magnet motor, comprising an encoder, a stator and a connecting box, the stator being provided with a pair of air inlet holes, the stator being provided with four first limit grooves, the first limit grooves being provided with first limit blocks on both sides of a first dustproof plate being placed in the first limit grooves, the stator being fixedly connected with four first threaded rods, the first threaded rods being threaded with a first pressure plate, the upper end of the connecting box being provided with an air outlet, and the upper end of the connecting box being provided with a pair of second limit grooves, the second limit blocks on both sides of a second dustproof plate being placed in the second limit grooves, the upper end of the connecting box being fixedly connected with a pair of second threaded rods, the second threaded rods being threaded with a second pressure plate.

[0006] As a preferred technical solution of the present utility model, the first limiting block can be in close contact with the first limiting groove, and the outer wall of the first dustproof plate can be in close contact with the inner wall of the air inlet hole.

[0007] As a preferred technical solution of the present utility model, the second limiting block can be in close contact with the second limiting groove, and the outer wall of the second dustproof plate can be in close contact with the inner wall of the air outlet.

[0008] As a preferred technical solution of the utility model, a shaft is arranged at the center of the encoder, and one end of the shaft passes through the stator and the connection box and is connected to the device.

[0009] As a preferred technical solution of the utility model, a rotor is fixedly arranged on the shaft body, and the rotor is located inside the stator and the connection box.

[0010] As a preferred technical solution of the utility model, fan blades are fixedly arranged on the shaft body, and the fan blades are located below the air outlet.

[0011] Compared with the prior art, the beneficial effect that the utility model can achieve is: through the first dustproof plate and the second dustproof plate, the device can effectively prevent dust from entering the device whether in a working state or a non-working state, thereby preventing dust from entering and adhering to the rotor surface and affecting the normal operation of the motor. At the same time, the first dustproof plate and the second dustproof plate can be well disassembled for cleaning and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the connection box and device structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the stator and connection box structure of the utility model;

[0014] Figure 3 This is a schematic diagram of the internal structure of the stator and the connection box of the utility model;

[0015] Figure 4 For this utility model Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0016] Among them: 1. encoder; 2. stator; 3. connection box; 4. air inlet; 5. first limit slot; 6. first dustproof plate; 7. first limit block; 8. first threaded rod; 9. first pressure plate; 10. air outlet; 11. second limit slot; 12. second dustproof plate; 13. second limit block; 14. second threaded rod; 15. second pressure plate; 16. shaft; 17. equipment; 18. rotor; 19. fan blades. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0018] Example

[0019] Please refer to Figure 1-Figure 3 As shown, the utility model provides an air-cooled permanent magnet motor, the first limit block 7 can be in close contact with the first limit groove 5, the outer wall of the first dustproof plate 6 can be in close contact with the inner wall of the air inlet 4, so as to better prevent dust from entering through the air inlet 4, the second limit block 13 can be in close contact with the second limit groove 11, the outer wall of the second dustproof plate 12 can be in close contact with the inner wall of the air outlet 10, so as to better prevent dust, a shaft body 16 is arranged at the center position of the encoder 1, one end of the shaft body 16 passes through the stator 2 and the connecting box 3 and is connected to the device 17, a rotor 18 is fixedly arranged on the shaft body 16, the rotor 18 is located inside the stator 2 and the connecting box 3, a fan blade 19 is fixedly arranged on the shaft body 16, and the fan blade 19 is located below the air outlet 10.

[0020] When in use, the fan blades 19 on the shaft 16 can rotate during the rotation of the rotor 18 and the shaft 16. The rotation of the fan blades 19 can allow external air to enter the stator 2 and the connecting box 3 through the air inlet 4, and the air can be discharged through the air outlet 10. The entire air flow process can take away the heat generated during the operation of the permanent magnet motor.

[0021] As a further implementation of this embodiment, Figure 1-Figure 4 As shown, a pair of air inlet holes 4 are opened on the stator 2, four first limit grooves 5 are opened on the stator 2, and the four first limit grooves 5 are respectively located on both sides of the air inlet hole 4, and the first limit blocks 7 on both sides of the first dustproof plate 6 can be placed in the first limit grooves 5, four first threaded rods 8 are fixedly connected to the stator 2, and the first threaded rods 8 are threadedly connected with the first pressure plate 9, an air outlet hole 10 is opened on the upper end of the connecting box 3, and a pair of second limit grooves 11 are opened on the upper end of the connecting box 3, and the two second limit grooves 11 are respectively located on both sides of the air outlet hole 10, and the second limit blocks 13 on both sides of the second dustproof plate 12 can be placed in the second limit grooves 11, and a pair of second threaded rods 14 are fixedly connected to the upper end of the connecting box 3, and the second pressure plate 15 is threadedly connected to the second threaded rods 14.

[0022] When in use, the first dustproof plate 6 and the second dustproof plate 12 can effectively prevent dust from entering the device, and prevent dust from entering and adhering to the surface of the rotor 18, thereby affecting the normal operation of the motor. When the first dustproof plate 6 needs to be removed for cleaning or replacement, the first pressing plate 9 on the first threaded rod 8 can be rotated ninety degrees so that the first pressing plate 9 no longer squeezes and fixes the first limit block 7 on the first dustproof plate 6, so that the first dustproof plate 6 and the first limit block 7 can be taken out from the air inlet 4 for cleaning and replacement. When the first dustproof plate 6 needs to be installed, the first dustproof plate 6 is placed into the air inlet 4 and the first limit blocks 7 on both sides of the first dustproof plate 6 are placed into the first limit groove 5. In addition, it is only necessary to reversely rotate the first pressing plate 9 on the first threaded rod 8 by ninety degrees again. The first pressing plate 9 will move downward during the rotation, and finally the first limit block 7 and the first dustproof plate 6 can be fixed, so that the first dustproof plate 6 can be quickly disassembled and assembled, and the disassembly and replacement process of the second dustproof plate 12 is the same as the disassembly and installation process of the first dustproof plate 6.

[0023] Specific working principle: when in use, the fan blades 19 on the shaft 16 can rotate during the rotation of the rotor 18 and the shaft 16. The rotation of the fan blades 19 can allow external air to enter the stator 2 and the connection box 3 through the air inlet 4, and the air can be discharged through the air outlet 10. The entire air flow process can quickly take away the heat generated during the operation of the permanent magnet motor, thereby achieving air cooling. The first dustproof plate 6 and the second dustproof plate 12 can well prevent dust from entering the device, preventing dust from entering and adhering to the surface of the rotor 18 and affecting the normal operation of the motor. When the first dustproof plate 6 needs to be removed for cleaning or replacement, the first pressure plate 9 on the first threaded rod 8 can be rotated ninety degrees to allow the first pressure plate 9 to be removed. The plate 9 no longer squeezes and fixes the first limit block 7 on the first dustproof plate 6, so that the first dustproof plate 6 and the first limit block 7 can be taken out from the air inlet 4 for cleaning and replacement. When the first dustproof plate 6 needs to be installed, the first dustproof plate 6 is placed into the air inlet 4 and the first limit blocks 7 on both sides of the first dustproof plate 6 are placed into the first limit groove 5. In addition, it is only necessary to reversely rotate the first pressing plate 9 on the first threaded rod 8 by ninety degrees again. The first pressing plate 9 will move downward during the rotation, and finally the first limit block 7 and the first dustproof plate 6 can be fixed, so that the first dustproof plate 6 can be quickly disassembled and assembled, and the disassembly and replacement process of the second dustproof plate 12 is the same as the disassembly and installation process of the first dustproof plate 6.

[0024] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An air-cooled permanent magnet motor, comprising an encoder (1), a stator (2) and a connection box (3), characterized in that: The stator (2) is provided with a pair of air inlet holes (4), the stator (2) is provided with four first limiting grooves (5), the first limiting grooves (5) can accommodate first limiting blocks (7) on both sides of the first dustproof plate (6), the stator (2) is fixedly connected with four first threaded rods (8), the first threaded rods (8) are threadedly connected with a first pressing plate (9), the upper end of the connection box (3) is provided with an air outlet hole (10), and the upper end of the connection box (3) is provided with a pair of second limiting grooves (11), the second limiting grooves (11) can accommodate second limiting blocks (13) on both sides of the second dustproof plate (12), the upper end of the connection box (3) is fixedly connected with a pair of second threaded rods (14), the second threaded rods (14) are threadedly connected with a second pressing plate (15).

2. The air-cooled permanent magnet motor according to claim 1, characterized in that: The first limiting block (7) can be in close contact with the first limiting groove (5), and the outer wall of the first dustproof plate (6) can be in close contact with the inner wall of the air inlet hole (4).

3. The air-cooled permanent magnet motor according to claim 1, characterized in that: The second limiting block (13) can be in close contact with the second limiting groove (11), and the outer wall of the second dustproof plate (12) can be in close contact with the inner wall of the air outlet hole (10).

4. The air-cooled permanent magnet motor according to claim 1, characterized in that: A shaft (16) is arranged at the center of the encoder (1), and one end of the shaft (16) passes through the stator (2) and the connection box (3) and is connected to the device (17).

5. The air-cooled permanent magnet motor according to claim 4, characterized in that: A rotor (18) is fixedly arranged on the shaft body (16), and the rotor (18) is located inside the stator (2) and the connection box (3).

6. The air-cooled permanent magnet motor according to claim 5, characterized in that: A fan blade (19) is fixedly arranged on the shaft (16), and the fan blade (19) is located below the air outlet (10).

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