Low-noise permanent magnet motor end cover sealing assembly

Abstract

The invention relates to the related technical field of permanent magnet motors, in particular to a low-noise permanent magnet motor end cover sealing assembly which comprises a permanent magnet motor shell, an output shaft is installed on the outer wall of the permanent magnet motor shell, and a noise reduction mechanism is arranged on the outer wall of the output shaft. Firstly, the first noise reduction plate is installed on the outer side of the end cover, then the second noise reduction plate is fixed to the surface of one side of the end cover, the second noise reduction plate and the first noise reduction plate are connected, the noise reduction performance and the sealing performance of the second noise reduction plate and the first noise reduction plate are ensured, the outer side surface of the second noise reduction plate is fixedly connected with the first bolt and the connecting plate, and the connecting plate is fixed to the outer side surface of the second noise reduction plate. And then the third noise reduction plate is connected to the outer side surface of the connecting plate in a clamped mode to improve the noise reduction effect, finally, the fixing plate is fixedly connected to one side surface of the third noise reduction plate, meanwhile, the noise reduction effect is enhanced again through a noise reduction ring in the third noise reduction plate, and therefore noise reduction is conducted on the output shaft.

Description

Technical Field

[0001] The present invention relates to the technical field related to permanent magnet motors, and in particular to a low-noise permanent magnet motor end cover sealing assembly. Background Art

[0002] A permanent magnet motor is a synchronous motor that uses permanent magnets to generate a magnetic field. The speed of its rotor is consistent with the current frequency of the stator winding. The permanent magnet synchronous motor is composed of components such as a stator, a rotor and an end cover. The stator is basically the same as an ordinary induction motor. A laminated structure is used to reduce the iron loss of the motor during operation. The rotor can be made solid or laminated. The armature winding can be a concentrated full-pitch winding, or a distributed short-pitch winding and an unconventional winding. The working principle of the permanent magnet synchronous motor is based on the interaction between the rotating magnetic field generated by the stator and the magnetic field generated by the permanent magnets on the rotor. Pre-magnetized permanent magnets are installed on the rotor. These permanent magnets can generate a strong magnetic field when rotating, thereby providing a greater output torque. The motor's control system will accurately adjust the current to ensure that the motor rotor can rotate synchronously with the rotating magnetic field and maintain a stable operating state. Generally, when the end cover is installed on the permanent magnet motor, it needs to be sealed, but the permanent magnet motor is noisy during use, so a low-noise permanent magnet motor end cover sealing assembly is required.

[0003] The low-noise permanent magnet motor end cover sealing components currently on the market have the following problems when in use:

[0004] 1. When the traditional low-noise permanent magnet motor end cover sealing assembly is used, the rotating shaft has a large moment of inertia during use, which causes large vibrations during the operation of the permanent magnet motor, resulting in large noise from the vibration of the housing, which affects the construction workers;

[0005] 2. When most low-noise permanent magnet motor end cover sealing assemblies are used, the operation of installing the end cover to the permanent magnet motor is cumbersome, and the end cover may slip during use, causing certain safety hazards. Summary of the invention

[0006] The present invention aims to solve one of the technical problems in the above-mentioned technology at least to some extent.

[0007] To this end, one purpose of the present invention is to propose a low-noise permanent magnet motor end cover sealing assembly, which reduces the noise of the running rotating shaft through the noise reduction mechanism of the low-noise permanent magnet motor end cover sealing assembly, thereby avoiding vibration during transportation of the permanent magnet motor, reducing the vibration transmission to the outer casing to form noise, and improving the consumer's experience. At the same time, through the installation component, the cover can be easily installed on the permanent magnet motor and fixed at the same time, which is convenient for installation and reduces unnecessary losses to consumers.

[0008] To achieve the above object, the present invention provides the following technical solution: a low-noise permanent magnet motor end cover sealing assembly, comprising a permanent magnet motor housing, an output shaft is installed on the outer wall of the permanent magnet motor housing, and a noise reduction mechanism is provided on the outer wall of the output shaft;

[0009] The noise reduction mechanism includes a first noise reduction plate, a second noise reduction plate, a first bolt, a connecting plate, a third noise reduction plate, a noise reduction ring, a fixing plate and an installation assembly. The first noise reduction plate is installed on the outer wall of the output shaft, the second noise reduction plate is fixed inside the first noise reduction plate, the first bolt is installed on the outer wall of the second noise reduction plate, the connecting plate is installed on the outside of the second noise reduction plate, the third noise reduction plate is fixed on the outer wall of the connecting plate, the third noise reduction plate is slidably connected with a noise reduction ring inside, the third noise reduction plate is installed inside the fixing plate, and the installation assembly is installed on the outer wall of the first noise reduction plate.

[0010] Preferably, the first bolts are distributed at equal intervals on the outer wall of the second noise reduction plate, and the first bolts are distributed at equal intervals on the outer wall of the connecting plate.

[0011] Preferably, the first noise reduction plate and the second noise reduction plate are installed inside the connecting plate, and the noise reduction ring and the fixing plate are installed inside the third noise reduction plate.

[0012] Preferably, the mounting assembly includes an end cover, a buckle, a second bolt, a slot and a sealing ring, the outer wall of the first noise reduction plate is installed with the end cover, the outer wall of the end cover is fixed with a buckle, the outer wall of the end cover is installed with the second bolt, the outer wall of the permanent magnet motor housing is provided with a slot, and the outer wall of the permanent magnet motor housing is installed with a sealing ring.

[0013] Preferably, the first noise reduction plate and the permanent magnet motor housing are installed on both sides of the end cover, and the buckles are distributed at equal intervals on the outer wall of the end cover.

[0014] Preferably, the second bolts are distributed at equal intervals on the outer wall of the end cover, and the slots are opened at equal intervals on the outer wall of the permanent magnet motor housing.

[0015] Preferably, the slot and the buckle form a sliding structure, and the permanent magnet motor housing and the end cover are installed on both sides of the sealing ring.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the low-noise permanent magnet motor end cover sealing assembly, through the first noise reduction plate, the second noise reduction plate, the first bolt, the connecting plate, the third noise reduction plate, the noise reduction ring, the fixing plate and the installation assembly, when in use, when the output shaft needs to reduce the noise, the first noise reduction plate is first installed on the outside of the end cover, and then the second noise reduction plate is fixed to the side surface of the end cover, and then the second noise reduction plate is connected to the first noise reduction plate to ensure the noise reduction and sealing of the two, the first bolt is fixedly connected to the outer surface of the second noise reduction plate, the connecting plate is connected, the connecting plate is fixed to the outer surface of the second noise reduction plate, and then the third noise reduction plate is snap-connected to the outer surface of the connecting plate to improve the noise reduction effect, and finally the fixing plate is fixedly connected to the side surface of the third noise reduction plate, and at the same time the noise reduction ring inside the third noise reduction plate further enhances the noise reduction effect, thereby reducing the noise of the output shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the first noise reduction plate and the first bolt used in combination with each other in the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the connecting plate and the third noise reduction plate used in conjunction with each other in the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the end cover and the buckle in cooperation with each other in the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the card slot and the sealing ring used in combination with each other in the present invention.

[0022] In the figure: 1. permanent magnet motor housing; 2. output shaft; 3. noise reduction mechanism; 31. first noise reduction plate; 32. second noise reduction plate; 33. first bolt; 34. connecting plate; 35. third noise reduction plate; 36. noise reduction ring; 37. fixing plate; 38. mounting assembly; 381. end cover; 382. buckle; 383. second bolt; 384. slot; 385. sealing ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-5. The present invention provides a technical solution: a low-noise permanent magnet motor end cover sealing assembly, comprising a permanent magnet motor housing 1, an output shaft 2 is mounted on the outer wall of the permanent magnet motor housing 1, and a noise reduction mechanism 3 is arranged on the outer wall of the output shaft 2;

[0025] The noise reduction mechanism 3 includes a first noise reduction plate 31, a second noise reduction plate 32, a first bolt 33, a connecting plate 34, a third noise reduction plate 35, a noise reduction ring 36, a fixing plate 37 and a mounting assembly 38. The first noise reduction plate 31 is installed on the outer wall of the output shaft 2, the second noise reduction plate 32 is fixed inside the first noise reduction plate 31, the first bolt 33 is installed on the outer wall of the second noise reduction plate 32, the connecting plate 34 is installed on the outside of the second noise reduction plate 32, the third noise reduction plate 35 is fixed on the outer wall of the connecting plate 34, the third noise reduction plate 35 is slidably connected with a noise reduction ring 36, the third noise reduction plate 35 is installed with a fixing plate 37, the outer wall of the first noise reduction plate 31 is installed with a mounting assembly 38, and the output shaft 2 is provided with a first noise reduction plate 31, the second noise reduction plate 32, the first bolt 33, the connecting plate 34, the third noise reduction plate 35 is provided with a noise reduction ring 36, the third noise reduction plate 35 is provided with a fixing plate 37, the outer wall of the first noise reduction plate 31 is provided with a mounting assembly 38. 36, fixing plate 37 and mounting assembly 38. During use, when it is necessary to reduce the noise of the output shaft 2, first, the first noise reduction plate 31 is installed on the outside of the end cover 381, and then the second noise reduction plate 32 is fixed on the side surface of the end cover 381, and then the second noise reduction plate 32 is connected to the first noise reduction plate 31 to ensure the noise reduction and sealing of both. The first bolt 33 is fixedly connected to the outer surface of the second noise reduction plate 32, and the connecting plate 34 is connected. The connecting plate 34 is fixed on the outer surface of the second noise reduction plate 32, and then the third noise reduction plate 35 is snap-connected to the outer surface of the connecting plate 34 to improve the noise reduction effect. Finally, the fixing plate 37 is fixedly connected to the side surface of the third noise reduction plate 35. At the same time, the noise reduction ring 36 inside the third noise reduction plate 35 further enhances the noise reduction effect, thereby reducing the noise of the output shaft 2.

[0026] Further, the mounting assembly 38 includes an end cover 381, a buckle 382, ​​a second bolt 383, a slot 384 and a sealing ring 385. The outer wall of the first noise reduction plate 31 is mounted with the end cover 381, the outer wall of the end cover 381 is fixed with a buckle 382, ​​the outer wall of the end cover 381 is mounted with the second bolt 383, the outer wall of the permanent magnet motor housing 1 is provided with a slot 384, the outer wall of the permanent magnet motor housing 1 is mounted with a sealing ring 385, and the end cover 381, the buckle 382, ​​the second bolt 383, the slot 384 and the sealing ring 385 are connected to the outer wall of the permanent magnet motor housing 1. When the end cover 381 needs to be installed during use, the buckle 382 is aligned with the slot 384, and then the buckle 382 is placed in the slot 384, and the end cover 381 is rotated, and the buckle 382 is engaged with the slot 384, so that the permanent magnet motor housing 1 and the end cover 381 are fixed for the first time, and the second bolt 383 is used to fix the permanent magnet motor housing 1 and the end cover 381 again. At this time, the sealing ring 385 is sealed inside the permanent magnet motor housing 1 and the end cover 381 to improve the fixing effect, thereby installing the end cover 381.

[0027] Furthermore, the first bolts 33 are distributed at equal intervals on the outer wall of the second noise reduction plate 32, and the first bolts 33 are distributed at equal intervals on the outer wall of the connecting plate 34. Through the setting of the first bolts 33, the first noise reduction plate 31 is installed on the outside of the end cover 381, and then the second noise reduction plate 32 is fixed to the one side surface of the end cover 381, and then the second noise reduction plate 32 is connected to the first noise reduction plate 31 to ensure the noise reduction and sealing performance of the two. The first bolts 33 are fixedly connected to the outer surface of the second noise reduction plate 32, and the connecting plate 34 is connected. The connecting plate 34 is fixed to the outer surface of the second noise reduction plate 32.

[0028] Furthermore, the first noise reduction plate 31 and the second noise reduction plate 32 are installed inside the connecting plate 34, and the noise reduction ring 36 and the fixing plate 37 are installed inside the third noise reduction plate 35. Through the setting of the third noise reduction plate 35, the third noise reduction plate 35 is snap-connected to the outer surface of the connecting plate 34 to improve the noise reduction effect. The fixing plate 37 is fixedly connected to one side surface of the third noise reduction plate 35, and the noise reduction ring 36 inside the third noise reduction plate 35 further enhances the noise reduction effect.

[0029] Furthermore, the first noise reduction plate 31 and the permanent magnet motor housing 1 are installed on both sides of the end cover 381, and the buckles 382 are evenly spaced on the outer wall of the end cover 381. Through the setting of the buckle 382, ​​the buckle 382 is aligned with the slot 384, the buckle 382 is placed in the slot 384, and the end cover 381 is rotated. The buckle 382 is engaged with the slot 384, and the permanent magnet motor housing 1 and the end cover 381 are fixed for the first time.

[0030] Furthermore, the second bolts 383 are evenly spaced on the outer wall of the end cover 381 , and the slots 384 are evenly spaced on the outer wall of the permanent magnet motor housing 1 . By setting the second bolts 383 , the permanent magnet motor housing 1 and the end cover 381 are fixed again using the second bolts 383 .

[0031] Furthermore, the slot 384 and the buckle 382 form a sliding structure, and the permanent magnet motor housing 1 and the end cover 381 are installed on both sides of the sealing ring 385. Through the setting of the sealing ring 385, the sealing ring 385 is sealed inside the permanent magnet motor housing 1 and the end cover 381 to improve the fixing effect.

[0032] Working principle: First, when the output shaft 2 needs to be noise-reduced during use, the first noise reduction plate 31 is first installed on the outside of the end cover 381, and then the second noise reduction plate 32 is fixed to one side surface of the end cover 381, and then the second noise reduction plate 32 is connected to the first noise reduction plate 31 to ensure the noise reduction and sealing of both, and the first bolt 33 is fixedly connected to the outer surface of the second noise reduction plate 32, and the connecting plate 34 is connected, and the connecting plate 34 is fixed to the outer surface of the second noise reduction plate 32, and then the third noise reduction plate 35 is snap-connected to the outer surface of the connecting plate 34 to improve the noise reduction effect, and finally the fixing plate 37 is fixedly connected to the third noise reduction plate 3 5, and the noise reduction ring 36 inside the third noise reduction plate 35 further enhances the noise reduction effect, thereby reducing the noise of the output shaft 2. When the end cover 381 needs to be installed, the buckle 382 is aligned with the slot 384, and then the buckle 382 is placed in the slot 384, and the end cover 381 is rotated. The buckle 382 is engaged with the slot 384, so that the permanent magnet motor housing 1 and the end cover 381 are fixed for the first time, and the second bolt 383 is used to fix the permanent magnet motor housing 1 and the end cover 381 again. At this time, the sealing ring 385 is sealed inside the permanent magnet motor housing 1 and the end cover 381 to improve the fixing effect, thereby installing the end cover 381.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-noise permanent magnet motor end cover sealing assembly, comprising a permanent magnet motor housing (1), characterized in that: An output shaft (2) is mounted on the outer wall of the permanent magnet motor housing (1), and a noise reduction mechanism (3) is provided on the outer wall of the output shaft (2); The noise reduction mechanism (3) comprises a first noise reduction plate (31), a second noise reduction plate (32), a first bolt (33), a connecting plate (34), a third noise reduction plate (35), a noise reduction ring (36), a fixing plate (37) and a mounting assembly (38); the first noise reduction plate (31) is mounted on the outer wall of the output shaft (2); the second noise reduction plate (32) is fixed inside the first noise reduction plate (31); the first bolt (33) is mounted on the outer wall of the second noise reduction plate (32); the connecting plate (34) is mounted on the outside of the second noise reduction plate (32); the third noise reduction plate (35) is fixed on the outer wall of the connecting plate (34); the third noise reduction plate (35) is slidably connected to the inside of the third noise reduction plate (35); the fixing plate (37) is mounted inside the third noise reduction plate (35); and the mounting assembly (38) is mounted on the outer wall of the first noise reduction plate (31).

2. A low-noise permanent magnet motor end cover sealing assembly according to claim 1, characterized in that: The first bolts (33) are distributed at equal intervals on the outer wall of the second noise reduction plate (32), and the first bolts (33) are distributed at equal intervals on the outer wall of the connecting plate (34).

3. The low-noise permanent magnet motor end cover sealing assembly according to claim 1, characterized in that: The first noise reduction plate (31) and the second noise reduction plate (32) are installed inside the connecting plate (34), and the noise reduction ring (36) and the fixing plate (37) are installed inside the third noise reduction plate (35).

4. A low-noise permanent magnet motor end cover sealing assembly according to claim 1, characterized in that: The mounting assembly (38) comprises an end cover (381), a buckle (382), a second bolt (383), a slot (384) and a sealing ring (385); the outer wall of the first noise reduction plate (31) is mounted with the end cover (381); the outer wall of the end cover (381) is fixed with a buckle (382); the outer wall of the end cover (381) is mounted with a second bolt (383); the outer wall of the permanent magnet motor housing (1) is provided with a slot (384); and the outer wall of the permanent magnet motor housing (1) is mounted with a sealing ring (385).

5. A low-noise permanent magnet motor end cover sealing assembly according to claim 4, characterized in that: The first noise reduction plate (31) and the permanent magnet motor housing (1) are mounted on two sides of the end cover (381), and the buckles (382) are distributed at equal intervals on the outer wall of the end cover (381).

6. A low-noise permanent magnet motor end cover sealing assembly according to claim 4, characterized in that: The second bolts (383) are distributed at equal intervals on the outer wall of the end cover (381), and the clamping grooves (384) are opened at equal intervals on the outer wall of the permanent magnet motor housing (1).

7. A low-noise permanent magnet motor end cover sealing assembly according to claim 4, characterized in that: The clamping groove (384) and the buckle (382) form a sliding structure, and the permanent magnet motor housing (1) and the end cover (381) are installed on both sides of the sealing ring (385).

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