A noise-reducing three-phase asynchronous motor

Abstract

The present invention relates to the technical field of three-phase asynchronous motors, and discloses a noise-reducing three-phase asynchronous motor, comprising a housing, a sliding box fixedly mounted on the bottom inner wall of the housing, a sliding mounting plate slidably mounted in the sliding box, a three-phase motor fixedly mounted on the top of the sliding mounting plate, a box door hingedly mounted on the back of the housing, a fixing sleeve fixedly mounted on the three-phase motor, the bottom of the fixing sleeve fixedly connected to the sliding mounting plate, and also comprising: two fixing mechanisms, the fixing mechanism comprising an L-shaped groove opened on the right side of the fixing sleeve, and a rectangular sliding rod slidably mounted on the right outer wall of the housing. In the present invention, when the trapezoidal plate completes the fixing of the three-phase motor, the annular plate will also stop moving. At this time, the stabilizing spring will further fix the three-phase motor under the action of elastic force, thereby enhancing the stability of the three-phase motor and avoiding large-scale vibration of the three-phase motor during long-term operation.

Description

Technical Field

[0001] The invention relates to the technical field of three-phase asynchronous motor equipment, in particular to a noise-reducing three-phase asynchronous motor. Background Art

[0002] The three-phase asynchronous motor is a type of induction motor. It is a type of motor that is powered by simultaneously connecting to a 380V three-phase alternating current (with a phase difference of 120 degrees). Because the rotor and stator rotating magnetic fields of the three-phase asynchronous motor rotate in the same direction and at different speeds, there is a slip rate, so it is called a three-phase asynchronous motor.

[0003] The three-phase asynchronous motor will produce indispensable vibrations during use. Long-term vibration will cause the motor to wear and become loose. The loose motor will produce a larger shaking amplitude during operation, which will produce greater noise, affecting the working environment and shortening the life of the motor. Summary of the invention

[0004] The purpose of the present invention is to provide a noise-reducing three-phase asynchronous motor to solve the problem that the three-phase asynchronous motor will generate indispensable vibration during use. Long-term vibration will cause the motor to wear and become loose. The loosened motor will have a large shaking amplitude during operation, thereby generating greater noise, affecting the working environment and shortening the life of the motor.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a noise-reducing three-phase asynchronous motor, comprising a housing, a sliding box fixedly mounted on the inner wall of the bottom of the housing, a sliding mounting plate slidably mounted in the sliding box, a three-phase motor fixedly mounted on the top of the sliding mounting plate, a box door hingedly mounted on the back of the housing, a fixing sleeve fixedly mounted on the three-phase motor, the bottom of the fixing sleeve fixedly connected to the sliding mounting plate, and further comprising:

[0007] Two fixing mechanisms, the fixing mechanism includes an L-shaped groove opened on the right side of the fixing sleeve, a rectangular sliding rod is slidably installed on the right outer wall of the shell, the left side of the rectangular sliding rod extends into the shell, a fixing spring is sleeved on the rectangular sliding rod, the left end of the fixing spring is fixedly connected to the shell, a Z-shaped plate is fixedly installed on the right end of the rectangular sliding rod, the right end of the fixing spring is fixedly connected to the Z-shaped plate, a trapezoidal plate is fixedly installed on the left end of the rectangular sliding rod, the left end of the trapezoidal plate extends into the L-shaped groove and contacts with the L-shaped groove, a rectangular limiting block is fixedly installed on the top of the shell, and the Z-shaped plate passes through the rectangular limiting block and is slidably connected to the rectangular limiting block;

[0008] A noise reduction plate is fixedly installed in the shell.

[0009] Further, a stabilizing mechanism is arranged inside the outer shell. The stabilizing mechanism includes a plurality of telescopic rods arranged inside the outer shell. The ends of the plurality of telescopic rods are fixedly installed with an annular plate. Stabilizing springs are respectively sleeved on the plurality of telescopic rods. The ends of the plurality of stabilizing springs are fixedly connected with the annular plate. The back surface of the annular plate is in contact with the three-phase motor.

[0010] Further, a connecting plate is hingedly installed on the annular plate. The top end of the connecting plate is hingedly installed with a sliding plate. The top end of the sliding plate extends outside the outer shell and is slidably connected with the outer shell. The top end of the sliding plate is hingedly installed with a movable plate.

[0011] Further, a U-shaped limiting plate is fixedly installed on the top of the outer shell. A limiting slider is slidably sleeved on the U-shaped limiting plate. The top end of the movable plate is hingedly connected with the limiting slider. Trapezoidal fixing blocks are respectively fixedly installed on the left side and the right side of the limiting slider. One side of the two trapezoidal fixing blocks close to each other is respectively in contact with two Z-shaped plates.

[0012] Further, a heat dissipation mechanism is arranged inside the outer shell. The heat dissipation mechanism includes a rectangular air box fixedly installed on the inner wall of the noise elimination plate. A rotating shaft is rotatably installed inside the rectangular air box. The rotating shaft penetrates through the rectangular air box and is rotatably connected with the rectangular air box. The front end of the rotating shaft extends outside the outer shell. A plurality of fan blades are fixedly installed on the rotating shaft.

[0013] Further, a plurality of heat dissipation holes are formed in the front surface of the outer shell. The plurality of heat dissipation holes all penetrate through the rectangular air box. A dust removal strip is fixedly sleeved on the outer wall of the rotating shaft. The back surface of the dust removal strip is in contact with the outer shell.

[0014] Further, a rectangular groove is formed at the end of the rotating shaft. A trapezoidal surface output shaft is arranged at the front end of the three-phase motor. The front end of the trapezoidal surface output shaft extends into the rectangular groove and is in contact with the rectangular groove.

[0015] Further, a sealing mechanism is arranged on the back surface of the box door. The sealing mechanism includes a sealing cylinder fixedly installed on the box door. The sealing cylinder penetrates through the box door. A plurality of circular holes are formed in the front surface of the sealing cylinder. A sealing spring is fixedly installed on the inner wall of the front surface of the sealing cylinder. A circular plate is fixedly installed at the end of the sealing spring. The circular plate is slidably connected with the sealing cylinder. A plurality of exhaust holes are formed in the outer wall of the sealing cylinder.

[0016] The present invention has the following beneficial effects:

[0017] When the locking cam is in a state of being moved, the locking cam moves against the locking cam, and the locking cam moves against the locking cam, and the locking cam moves against the locking cam, and the locking cam moves against the locking cam.

[0018] (2) The present invention provides a noise-reducing three-phase asynchronous motor. During the movement of the annular plate, the connecting plate will be driven to rise, the connecting plate will be driven to rise, the sliding plate will be driven to move the movable plate in a direction away from the sliding plate, the sliding plate will be driven to move the limit slider at the same time, the limit slider will be driven to move the two trapezoidal fixed blocks at the same time, the inclined surfaces of the two trapezoidal fixed blocks will contact the outer walls of the two Z-shaped plates at the same time, the inclined surfaces of the two trapezoidal fixed blocks will make the two Z-shaped plates approach each other, the Z-shaped plates will be driven to move the two rectangular sliding bars approach each other, and the clamping effect of the trapezoidal plates on the three-phase motor will be further improved;

[0019] (3) The present invention provides a noise-reducing three-phase asynchronous motor. After the trapezoidal plate completes clamping of the three-phase motor, the ladder output shaft will also enter the rectangular groove. Since the shaft is rotatably installed, during the process of the ladder output shaft entering, the inclined surface of the ladder output shaft will adjust the angle of the shaft so that the ladder output shaft and the rectangular groove are locked and docked. The three-phase motor is started. The three-phase motor will drive the shaft to rotate under the action of the ladder output shaft and the rectangular groove. The shaft will drive a number of fan blades to rotate. The fan blades will generate a suction force. When the outside air enters the heat dissipation hole, dust will settle on the surface of the heat dissipation hole. During the rotation of the shaft, the dust removal strip will be driven to rotate. The dust removal strip will sweep the dust off the wall of the heat dissipation hole, thereby preventing the dust from clogging the heat dissipation hole, resulting in poor air circulation and affecting the normal heat dissipation of the three-phase motor.

[0020] (4) The present invention provides a noise-reducing three-phase asynchronous motor. When air enters the housing, the air pressure in the housing will increase as more air gathers. The air will enter the sealing cylinder through the circular hole. The air will push the circular plate to move away from the three-phase motor. At this time, the sealing spring will be stretched and deformed. After the circular plate passes through the exhaust hole, the air in the housing will be discharged from the exhaust hole, thereby achieving the heat dissipation effect. When the three-phase motor stops running, the circular plate will recover under the elastic force of the sealing spring. At this time, the sealing cylinder will be in a sealed state, so that dust in the air will not enter the housing through the exhaust hole, effectively preventing the dust from affecting the three-phase motor.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a side cross-sectional structural schematic diagram of the present invention;

[0025] Figure 3 It is a schematic diagram of a side partial cross-sectional structure of the present invention;

[0026] Figure 4 For the present invention Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0027] Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure of B;

[0028] Figure 6 For the present invention Figure 2 Schematic diagram of the enlarged structure of C in the middle;

[0029] Figure 7 For the present invention Figure 2 Schematic diagram of the enlarged structure of D in the middle;

[0030] Figure 8 It is a schematic diagram of the internal structure of the present invention.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] In the figure: 1. Outer shell; 2. Sliding box; 3. Sliding mounting plate; 4. Three-phase motor; 401. Box door; 402. Fixed sleeve; 5. Fixing mechanism; 502. L-shaped groove; 503. Rectangular sliding rod; 504. Fixing spring; 505. Z-shaped plate; 506. Trapezoidal plate; 507. Rectangular limiting block; 508. Noise reduction plate; 6. Stabilizing mechanism; 601. Telescopic rod; 603. Annular plate; 604. Stabilizing spring; 605. Connecting plate; 606. Sliding plate; 607. Movable plate; 608. C-shaped limiting plate; 609. Limiting slider; 610. Trapezoidal fixing block; 7. Heat dissipation mechanism; 701. Rectangular air box; 702. Rotating shaft; 703. Fan blade; 704. Heat dissipation holes; 705. Dust removal strip; 706. Rectangular groove; 707. Trapezoidal surface output shaft; 8. Sealing mechanism; 801. Sealing cylinder; 802. Circular hole; 803. Sealing spring; 804. Circular plate; 805. Exhaust hole. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Please refer to Figure 1 - Figure 8 As shown in the figure, the present invention is a noise-reducing three-phase asynchronous motor, including an outer shell 1. A sliding box 2 is fixedly installed on the bottom inner wall of the outer shell 1. A sliding mounting plate 3 is slidably installed in the sliding box 2. A three-phase motor 4 is fixedly installed on the top of the sliding mounting plate 3. A box door 401 is hingedly installed on the back of the outer shell 1. A fixed sleeve 402 is fixedly installed on the three-phase motor 4. The bottom of the fixed sleeve 402 is fixedly connected to the sliding mounting plate 3. It further includes:

[0035] Two fixing mechanisms 5. The fixing mechanism 5 includes an L-shaped groove 502 opened on the right side of the fixed sleeve 402. A rectangular sliding rod 503 is slidably installed on the right outer wall of the outer shell 1. The left side of the rectangular sliding rod 503 extends into the outer shell 1. A fixing spring 504 is sleeved on the rectangular sliding rod 503. The left end of the fixing spring 504 is fixedly connected to the outer shell 1. The right end of the rectangular sliding rod 503 is fixedly installed with a Z-shaped plate 505. The right end of the fixing spring 504 is fixedly connected to the Z-shaped plate 505. The left end of the rectangular sliding rod 503 is fixedly installed with a trapezoidal plate 506. The left end of the trapezoidal plate 506 extends into the L-shaped groove 502 and contacts the L-shaped groove 502. A rectangular limiting block 507 is fixedly installed on the top of the outer shell 1. The Z-shaped plate 505 penetrates through the rectangular limiting block 507 and is slidably connected to the rectangular limiting block 507;

[0036] A noise reduction plate 508 is fixedly installed inside the housing 1.

[0037] As Figure 5 shown, a stabilizing mechanism 6 is arranged inside the housing 1. The stabilizing mechanism 6 includes a plurality of telescopic rods 601 arranged inside the housing 1. An annular plate 603 is fixedly installed at the ends of the plurality of telescopic rods 601. A stabilizing spring 604 is sleeved on each of the plurality of telescopic rods 601. The ends of the plurality of stabilizing springs 604 are fixedly connected to the annular plate 603. The back surface of the annular plate 603 is in contact with the three-phase motor 4.

[0038] After the trapezoidal plate 506 finishes fixing the three-phase motor 4, the annular plate 603 will also stop moving. At this time, the stabilizing spring 604 will further fix the three-phase motor 4 under the action of elastic force, thereby enhancing the stability of the three-phase motor 4 and preventing the three-phase motor 4 from vibrating significantly during long-term operation.

[0039] As Figure 6 shown, a connecting plate 605 is hingedly installed on the annular plate 603. The top end of the connecting plate 605 is hingedly installed with a sliding plate 606. The top end of the sliding plate 606 extends outside the housing 1 and is slidably connected to the housing 1. The top end of the sliding plate 606 is hingedly installed with a movable plate 607.

[0040] During the movement of the annular plate 603, it will drive the connecting plate 605 to rise. The connecting plate 605 will drive the sliding plate 606 to rise. The sliding plate 606 drives the movable plate 607 to move away from the sliding plate 606.

[0041] As Figure 6 shown, a U-shaped limiting plate 608 is fixedly installed at the top of the housing 1. A limiting slider 609 is slidably sleeved on the U-shaped limiting plate 608. The top end of the movable plate 607 is hingedly connected to the limiting slider 609. Trapezoidal fixing blocks 610 are fixedly installed on the left side and the right side of the limiting slider 609 respectively. The mutually approaching sides of the two trapezoidal fixing blocks 610 are respectively in contact with the two Z-shaped plates 505.

[0042] The sliding plate 606 will drive the limiting slider 609 to move simultaneously. The limiting slider 609 drives the two trapezoidal fixing blocks 610 to move simultaneously. The inclined surfaces of the two trapezoidal fixing blocks 610 will simultaneously contact the outer walls of the two Z-shaped plates 505. Under the action of the inclined surfaces of the two trapezoidal fixing blocks 610, the two Z-shaped plates 505 will approach each other. The Z-shaped plates 505 will drive the two rectangular sliding rods 503 to approach each other, further improving the clamping effect of the trapezoidal plate 506 on the three-phase motor 4.

[0043] As Figure 5As shown, a heat dissipation mechanism 7 is provided in the outer shell 1, and the heat dissipation mechanism 7 includes a rectangular bellows 701 fixedly mounted on the inner wall of the noise reduction plate 508, a rotating shaft 702 is rotatably mounted in the rectangular bellows 701, the rotating shaft 702 penetrates the rectangular bellows 701 and is rotatably connected to the rectangular bellows 701, the front end of the rotating shaft 702 extends to the outside of the outer shell 1, and a plurality of fan blades 703 are fixedly mounted on the rotating shaft 702.

[0044] The rotating shaft 702 drives a plurality of fan blades 703 to rotate, and the fan blades 703 generate a suction force. When the outside air enters the heat dissipation hole 704, dust will settle on the surface of the heat dissipation hole 704.

[0045] like Figure 5 As shown, a plurality of heat dissipation holes 704 are provided on the front of the housing 1 , and the plurality of heat dissipation holes 704 all penetrate the rectangular bellows 701 . A dust removal strip 705 is fixedly sleeved on the outer wall of the rotating shaft 702 , and the back of the dust removal strip 705 is in contact with the housing 1 .

[0046] During the rotation of the shaft 702 , the dust removal strip 705 will be driven to rotate, and the dust removal strip 705 will sweep away the dust in the heat dissipation hole 704 , thereby preventing the dust from clogging the heat dissipation hole 704 , causing air to be blocked and affecting the normal heat dissipation of the three-phase motor 4 .

[0047] like Figure 5 As shown, a rectangular groove 706 is formed at the end of the rotating shaft 702 , and a stepped output shaft 707 is provided at the front end of the three-phase motor 4 . The front end of the stepped output shaft 707 extends into the rectangular groove 706 and contacts the rectangular groove 706 .

[0048] After the trapezoidal plate 506 completes clamping of the three-phase motor 4, the ladder output shaft 707 will also enter the rectangular groove 706. Since the rotating shaft 702 is rotatably installed, during the entry of the ladder output shaft 707, the inclined surface of the ladder output shaft 707 will adjust the angle of the rotating shaft 702 so that the ladder output shaft 707 and the rectangular groove 706 are locked and docked.

[0049] like Figure 7 As shown, a sealing mechanism 8 is provided on the back of the box door 401, and the sealing mechanism 8 includes a sealing cylinder 801 fixedly installed on the box door 401, the sealing cylinder 801 penetrates the box door 401, a plurality of circular holes 802 are provided on the front of the sealing cylinder 801, a sealing spring 803 is fixedly installed on the inner wall of the front side of the sealing cylinder 801, a circular plate 804 is fixedly installed on the end of the sealing spring 803, the circular plate 804 is slidably connected to the sealing cylinder 801, and a plurality of exhaust holes 805 are provided on the outer wall of the sealing cylinder 801.

[0050] The air will enter the sealing cylinder 801 through the circular hole 802, and the air will push the circular plate 804 to move away from the three-phase motor 4. At this time, the sealing spring 803 will be stretched and deformed. After the circular plate 804 passes through the exhaust hole 805, the air in the outer shell 1 will be discharged from the exhaust hole 805, thereby achieving the heat dissipation effect. When the three-phase motor 4 stops running, under the elastic force of the sealing spring 803, the circular plate 804 will recover. At this time, the sealing cylinder 801 will be in a sealed state, so that dust in the air will not enter the outer shell 1 through the exhaust hole 805, effectively preventing dust from affecting the three-phase motor 4.

[0051] When in use, the sliding mounting plate 3 is slid into the sliding box 2. When the sliding mounting plate 3 moves, it will drive the three-phase motor 4 and the box door 401 to move. During the movement, the box door 401 will contact the trapezoidal plate 506. The trapezoidal plate 506 will slide in the direction away from the box door 401 under the action of the inclined surface. At this time, the trapezoidal plate 506 drives the rectangular sliding rod 503 to move in the direction away from the box door 401 at the same time, and the corresponding fixing spring 504 is stretched and deformed. When the fixing sleeve 402 moves, the trapezoidal plate 506 will enter the card slot of the L-shaped slot 502 along the L-shaped slot 502, so that the trapezoidal plate 506 is stuck in the L-shaped slot 502. Under the elastic force of the fixing spring 504, the trapezoidal plate 506 will be close to the L-shaped slot 502 to clamp and fix the three-phase motor 4. During the movement of the three-phase motor 4, the three-phase motor 4 will contact the annular plate 603, and the annular plate 603 will move towards the direction close to the rectangular bellows 701. When the annular plate 603 moves to the direction of rotation, the telescopic rod 601 and the stabilizing spring 604 shrink at the same time. When the trapezoidal plate 506 completes the fixation of the three-phase motor 4, the annular plate 603 also stops moving. At this time, the stabilizing spring 604 further fixes the three-phase motor 4 under the action of the elastic force. During the movement of the annular plate 603, the connecting plate 605 is driven to rise, and the connecting plate 605 drives the sliding plate 606 to rise. The sliding plate 606 drives the movable plate 607 to move in the direction away from the sliding plate 606. The sliding plate 606 drives the limiting slider 609 to move at the same time. The limiting slider 609 drives the two trapezoidal fixing blocks 610 to move at the same time. The inclined surfaces of the two trapezoidal fixing blocks 610 will contact the outer walls of the two Z-shaped plates 505 at the same time. Under the action of the inclined surfaces of the two trapezoidal fixing blocks 610, the two Z-shaped plates 505 will be close to each other, and the Z-shaped plate 505 will drive the two rectangular sliding rods 503 to move close to each other.

[0052] After the trapezoidal plate 506 completes clamping of the three-phase motor 4, the ladder output shaft 707 will also enter the rectangular groove 706. Since the rotating shaft 702 is rotatably installed, during the entry of the ladder output shaft 707, the inclined surface of the ladder output shaft 707 will adjust the angle of the rotating shaft 702 so that the ladder output shaft 707 and the rectangular groove 706 are locked and docked, and the three-phase motor 4 is started. The three-phase motor 4 will drive the rotating shaft 702 to rotate under the action of the ladder output shaft 707 and the rectangular groove 706. The rotating shaft 702 will drive a number of fan blades 703 to rotate, and the fan blades 703 will generate a suction force. When the outside air enters the heat dissipation hole 704, dust will settle on the surface of the heat dissipation hole 704. During the rotation of the rotating shaft 702, the dust removal strip 70 5 rotates, and the dust removal strip 705 will sweep the dust that is prevented from entering the heat dissipation hole 704; when the air enters the housing 1, the air pressure in the housing 1 will increase as the air gathers more and more, and the air will enter the sealing cylinder 801 through the circular hole 802, and the air will push the circular plate 804 to move away from the three-phase motor 4. At this time, the sealing spring 803 is stretched and deformed, and the circular plate 804 passes through the exhaust hole 805, and the air in the housing 1 is discharged from the exhaust hole 805, thereby achieving the heat dissipation effect. When the three-phase motor 4 stops running, the circular plate 804 will recover under the elastic force of the sealing spring 803, and the sealing cylinder 801 will be in a sealed state, so that the dust in the air will not enter the housing 1 through the exhaust hole 805.

[0053] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A noise-reducing three-phase asynchronous motor, comprising a housing (1), a sliding box (2) fixedly mounted on the bottom inner wall of the housing (1), a sliding mounting plate (3) slidably mounted in the sliding box (2), a three-phase motor (4) fixedly mounted on the top of the sliding mounting plate (3), a housing door (401) hingedly mounted on the back of the housing (1), a fixing sleeve (402) fixedly mounted on the three-phase motor (4), the bottom of the fixing sleeve (402) being fixedly connected to the sliding mounting plate (3), characterized in that: Further included are: Two fixing mechanisms (5), the fixing mechanism (5) includes an L-shaped groove (502) opened on the right side of the fixing sleeve (402), a rectangular sliding rod (503) is slidably installed on the outer wall of the right side of the housing (1), the left side of the rectangular sliding rod (503) extends into the housing (1), a fixing spring (504) is sleeved on the rectangular sliding rod (503), the left end of the fixing spring (504) is fixedly connected to the housing (1), the right end of the rectangular sliding rod (503) is fixedly installed with a Z-shaped plate (505), the right end of the fixing spring (504) is fixedly connected to the Z-shaped plate (505), the left end of the rectangular sliding rod (503) is fixedly installed with a trapezoidal plate (506), the left end of the trapezoidal plate (506) extends into the L-shaped groove (502) and contacts with the L-shaped groove (502), a rectangular limiting block (507) is fixedly installed on the top of the housing (1), the Z-shaped plate (505) penetrates through the rectangular limiting block (507) and is slidably connected to the rectangular limiting block (507); A noise elimination plate (508) is fixedly installed in the housing (1); A stabilizing mechanism (6) is arranged in the housing (1), the stabilizing mechanism (6) includes a plurality of telescopic rods (601) arranged in the housing (1), the ends of the plurality of telescopic rods (601) are fixedly installed with an annular plate (603), stabilizing springs (604) are respectively sleeved on the plurality of telescopic rods (601), the ends of the plurality of stabilizing springs (604) are fixedly connected to the annular plate (603), and the back surface of the annular plate (603) contacts with the three-phase motor (4); A connecting plate (605) is hingedly installed on the annular plate (603), the top end of the connecting plate (605) is hingedly installed with a sliding plate (606), the top end of the sliding plate (606) extends outside the housing (1) and is slidably connected to the housing (1), and the top end of the sliding plate (606) is hingedly installed with a movable plate (607).

2. A noise-reducing three-phase asynchronous motor according to claim 1, characterized in that: A U-shaped limiting plate (608) is fixedly installed on the top of the housing (1), a limiting slider (609) is slidably sleeved on the U-shaped limiting plate (608), the top end of the movable plate (607) is hingedly connected to the limiting slider (609), trapezoidal fixing blocks (610) are respectively fixedly installed on the left side and the right side of the limiting slider (609), and the sides of the two trapezoidal fixing blocks (610) close to each other respectively contact with the two Z-shaped plates (505).

3. A noise-reducing three-phase asynchronous motor according to claim 2, characterized in that: A heat dissipation mechanism (7) is arranged in the housing (1), the heat dissipation mechanism (7) includes a rectangular air box (701) fixedly installed on the inner wall of the noise elimination plate (508), a rotating shaft (702) is rotatably installed in the rectangular air box (701), the rotating shaft (702) penetrates through the rectangular air box (701) and is rotatably connected to the rectangular air box (701), the front end of the rotating shaft (702) extends outside the housing (1), and a plurality of fan blades (703) are fixedly installed on the rotating shaft (702).

4. The noise-reducing three-phase asynchronous motor according to claim 3, characterized in that: The front surface of the housing (1) is provided with a plurality of heat dissipation holes (704), and the plurality of heat dissipation holes (704) all penetrate the rectangular bellows (701). A dust removal strip (705) is fixedly sleeved on the outer wall of the rotating shaft (702), and the back surface of the dust removal strip (705) is in contact with the housing (1).

5. A noise-reducing three-phase asynchronous motor according to claim 4, characterized in that: A rectangular groove (706) is provided at the end of the rotating shaft (702), and a ladder-face output shaft (707) is provided at the front end of the three-phase motor (4), wherein the front end of the ladder-face output shaft (707) extends into the rectangular groove (706) and contacts the rectangular groove (706).

6. The noise-reducing three-phase asynchronous motor according to claim 5, characterized in that: A sealing mechanism (8) is provided on the back of the box door (401), and the sealing mechanism (8) comprises a sealing cylinder (801) fixedly mounted on the box door (401), the sealing cylinder (801) passing through the box door (401), a plurality of circular holes (802) being provided on the front of the sealing cylinder (801), a sealing spring (803) being fixedly mounted on the inner wall of the front of the sealing cylinder (801), a circular plate (804) being fixedly mounted on the end of the sealing spring (803), the circular plate (804) being slidably connected to the sealing cylinder (801), and a plurality of exhaust holes (805) being provided on the outer wall of the sealing cylinder (801).

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