CN213906466U - Noise-reduction three-phase asynchronous motor - Google Patents

Abstract

The utility model relates to a three-phase asynchronous machine technical field just discloses a three-phase asynchronous machine of making an uproar falls, including motor housing, motor housing's inner wall fixed mounting has the stator, the inboard movable mounting of stator has the rotor, the inside fixed mounting of rotor has the main shaft that runs through motor housing, the surface of main shaft and the right side movable mounting who is located the rotor have the back shroud. This three-phase asynchronous motor of making an uproar falls, acoustic celotex board through cellular material of conch wall internally mounted at motor housing, can effectually keep apart the inside noise of motor housing and the external world, thereby the propagation of noise reduction, in addition, the lateral wall shock pad has been installed with motor housing butt joint department to the protective cover, and positive shock pad has been installed between motor housing and back shroud, wherein lateral wall shock pad and positive shock pad are soft plastic material, effectual subduct vibrations when the high-speed operation of rotor, after vibrations subduct, the noise is with regard to its reduction thereupon, noise reduction from the root cause.

Description

Noise-reduction three-phase asynchronous motor

Technical Field

The utility model relates to a three-phase asynchronous machine technical field specifically is a three-phase asynchronous machine of making an uproar falls.

Background

The three-phase asynchronous motor is a motor powered by a 380V three-phase alternating current power supply (with a phase difference of 120 degrees) which is connected simultaneously, because a rotor of the three-phase asynchronous motor and a stator rotating magnetic field rotate in the same direction at different rotating speeds, and a slip rate exists, the three-phase asynchronous motor is called as an induction motor, after current is introduced into a stator, part of magnetic flux passes through a short circuit ring, induction current is generated in the short circuit ring, the current in the short circuit ring blocks the change of the magnetic flux, so that the magnetic flux generated by a short circuit ring part and the magnetic flux without the short circuit ring part have a phase difference, a rotating magnetic field is formed, after the electrification is started, electromotive force and current are induced due to the relative motion between a rotor winding and the magnetic field, namely the rotating magnetic field and the rotor have relative rotating speeds, and interact with the magnetic field to generate electromagnetic torque, so that the rotor rotates, and energy conversion is realized.

In prior art, three-phase asynchronous machine has a great deal of not enough, thereby its biggest problem just can produce strong vibrations and cause very strong noise when three-phase asynchronous machine is high-speed to move, and the staff destroys the damage eardrum membrane under being in the noise environment for a long time, consequently the utility model provides a three-phase asynchronous machine of making an uproar falls.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to prior art not enough, the utility model provides a three-phase asynchronous machine of making an uproar falls possesses the reduction vibrations, and thereby advantages such as noise reduction have solved three-phase asynchronous machine and can produce strong vibrations when high-speed operation and cause the problem of very strong noise.

(II) technical scheme

For realizing the aforesaid reduction vibrations, the purpose of noise reduction, the utility model provides a following technical scheme: the utility model provides a three-phase asynchronous machine of making an uproar falls, includes motor housing, motor housing's inner wall fixed mounting has the stator, the inboard movable mounting of stator has the rotor, the inside fixed mounting of rotor has the main shaft that runs through motor housing, the surface of main shaft and the right side movable mounting who is located the rotor have the back shroud, the right-hand member fixed mounting of rotor has radiator fan, motor housing's bottom fixed mounting has the shock attenuation piece, the bottom fixed mounting of shock attenuation piece has the bottom plate, the inside fixed mounting of motor housing conch wall has the acoustic celotex board, motor housing's right side movable mounting has the protective cover.

Preferably, the front surface of the motor housing is fixedly provided with a junction box, and the left side of the motor housing is provided with a shaft hole corresponding to the spindle.

Preferably, the draw-in groove has been seted up on the right side of main shaft, and the shape of looking sideways at of draw-in groove is ring shape, and the inner wall fixed mounting of draw-in groove has the lateral wall shock pad, and the shape of looking sideways at of lateral wall shock pad is ring shape, and the lateral wall shock pad is soft plastic pad.

Preferably, the material of protective cover is the aluminum alloy, and the protective cover contains go-between and heat dissipation cover, and the surperficial threaded connection of go-between has the set screw who extends to motor housing inside, and set screw runs through the lateral wall shock pad, and the heat dissipation cover is the fretwork netted, and the shape of looking sideways at of heat dissipation cover is circular, and the mesh diameter of heat dissipation cover is six centimetres at zero point.

Preferably, the back shroud is circular, and the back shroud is the copper, and the back shroud passes through screw and motor housing's left side wall threaded connection, and motor housing's left side wall fixed mounting has just to shake the pad, and the diameter of back shroud is less than the diameter of protective cover.

Preferably, the thickness of the sound insulation plate is one half of that of the motor shell, the sound insulation plate is made of a microporous material, the shock absorption block is a soft plastic plate, and the bottom plate is a rubber plate.

(III) advantageous effects

Compared with the prior art, the utility model provides a three-phase asynchronous machine of making an uproar falls possesses following beneficial effect:

the noise-reduction three-phase asynchronous motor can effectively isolate the noise inside the motor shell from the outside by installing a sound insulation board made of microporous materials in the shell wall of the motor shell, thereby reducing the propagation of the noise, in addition, a side wall shock pad is arranged at the joint of the protective cover and the motor shell, and a positive shock pad is arranged between the motor shell and the rear cover plate, wherein the side wall shock pad and the positive shock pad are made of soft plastic materials, the shock can be effectively reduced when the rotor runs at high speed, the noise is reduced along with the reduction of the shock after the shock is reduced, meanwhile, a shock absorption block made of soft plastic materials is also arranged between the motor shell and the bottom plate, the shock amplitude between the motor shell and the ground is reduced, thereby the noise is reduced, finally, the protective cover comprises a connecting ring and a heat dissipation cover, the heat dissipation cover is in a hollow mesh shape, the mesh diameter of the heat dissipation cover is zero point six centimeters, make the rotor can dispel the heat fast when the operation, the mesh spreads over whole heat exchanger that looses moreover, and the louvre of lid has many times behind the traditional motor, when radiator fan high-speed operation, can reduce the air and the wind sound that produces when extruding from the mesh to further subduct the noise, so the utility model provides a three-phase asynchronous machine of making an uproar falls.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged schematic view of a point a in the first embodiment of the present invention.

In the figure: the vibration-damping structure comprises a motor shell 1, a stator 2, a rotor 3, a main shaft 4, a rear cover plate 5, a cooling fan 6, a vibration-damping block 7, a bottom plate 8, a sound-insulating plate 9, a protective cover 10, fixing screws 11, clamping grooves 12, side wall vibration-damping pads 13 and positive vibration-damping pads 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a noise reduction three-phase asynchronous motor comprises a motor housing 1, a stator 2 is fixedly installed on the inner wall of the motor housing 1, a rotor 3 is movably installed on the inner side of the stator 2, a spindle 4 penetrating through the motor housing 1 is fixedly installed inside the rotor 3, a clamping groove 12 is formed in the right side of the spindle 4, the clamping groove 12 is annular in side view shape, a side wall shock pad 13 is fixedly installed on the inner wall of the clamping groove 12, the side wall shock pad 13 is annular in side view shape, the side wall shock pad 13 is a soft plastic pad, a protective cover 10 is made of aluminum alloy, the protective cover 10 comprises a connecting ring and a heat dissipation cover, a fixing screw 11 extending into the motor housing 1 is in surface threaded connection with the connecting ring, the fixing screw 11 penetrates through the side wall shock pad 13, the heat dissipation cover is net-shaped, the side view shape of the heat dissipation cover is circular, and the diameter of the heat dissipation cover is zero point six centimeters, the front of the motor shell 1 is fixedly provided with a junction box, the left side of the motor shell 1 is provided with a shaft hole corresponding to the main shaft 4, the surface of the main shaft 4 and the right side of the rotor 3 are movably provided with a rear cover plate 5, the right end of the rotor 3 is fixedly provided with a cooling fan 6, the bottom of the motor shell 1 is fixedly provided with a shock absorption block 7, the bottom of the shock absorption block 7 is fixedly provided with a bottom plate 8, the inside of the shell wall of the motor shell 1 is fixedly provided with a sound insulation plate 9, the thickness of the sound insulation plate 9 is one half of the motor shell 1, the sound insulation plate 9 is made of a microporous material, the shock absorption block 7 is a soft plastic plate, the bottom plate 8 is a rubber plate, the right side of the motor shell 1 is movably provided with a protective cover 10, the rear cover plate 5 is circular, the rear cover plate 5 is a copper plate, the rear cover plate 5 is in threaded connection with the left side wall of the motor shell 1 through screws, the left side wall of the motor shell 1 is fixedly provided with a positive shock absorption pad 14, the diameter of the back cover plate 5 is smaller than that of the protecting cover 10.

In summary, in the noise-reducing three-phase asynchronous motor, the sound insulation board 9 made of microporous material is installed inside the shell wall of the motor shell 1, so that the noise inside the motor shell 1 can be effectively isolated from the outside, and the transmission of the noise is reduced, in addition, the side wall shock absorption pad 13 is installed at the joint of the protection cover 10 and the motor shell 1, and the positive shock absorption pad 14 is installed between the motor shell 1 and the rear cover plate, wherein the side wall shock absorption pad 13 and the positive shock absorption pad 14 are both made of soft plastic materials, so that the shock can be effectively reduced when the rotor 3 runs at high speed, after the shock is reduced, the noise is reduced along with the reduction of the shock, the noise is reduced fundamentally, meanwhile, the shock absorption block 8 made of soft plastic materials is also installed between the motor shell 1 and the bottom plate 8, the shock amplitude between the motor shell 1 and the ground is reduced, so that the noise is reduced, and finally, the protection cover 10 comprises a connection ring and a heat dissipation cover, and the heat exchanger that looses is that the fretwork is netted, and the mesh diameter of heat exchanger is six centimetres at zero point for rotor 3 can dispel the heat fast when the operation, and the mesh spreads over whole heat exchanger that looses moreover, and the louvre of lid has many times behind the traditional motor, when radiator fan 6 runs at a high speed, can reduce the wind sound that the air produced when extruding from the mesh, thereby further subduct the noise, so the utility model provides a three-phase asynchronous machine of making an uproar falls.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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

Claims (6)

1. The utility model provides a three-phase asynchronous machine of making an uproar falls, includes motor housing (1), its characterized in that: the inner wall fixed mounting of motor housing (1) has stator (2), the inboard movable mounting of stator (2) has rotor (3), the inside fixed mounting of rotor (3) has main shaft (4) that runs through motor housing (1), the right side movable mounting that the surface of main shaft (4) just is located rotor (3) has back shroud (5), the right-hand member fixed mounting of rotor (3) has radiator fan (6), the bottom fixed mounting of motor housing (1) has shock absorption piece (7), the bottom fixed mounting of shock absorption piece (7) has bottom plate (8), the inside fixed mounting of motor housing (1) conch wall has acoustic celotex board (9), the right side movable mounting of motor housing (1) has protective cover (10).

2. A noise-reducing three-phase asynchronous machine according to claim 1, characterized in that: the front surface of the motor shell (1) is fixedly provided with a junction box, and the left side of the motor shell (1) is provided with a shaft hole corresponding to the main shaft (4).

3. A noise-reducing three-phase asynchronous machine according to claim 1, characterized in that: draw-in groove (12) have been seted up on the right side of main shaft (4), and the shape of looking sideways at of draw-in groove (12) is the ring shape, and the inner wall fixed mounting of draw-in groove (12) has lateral wall shock pad (13), and the shape of looking sideways at of lateral wall shock pad (13) is the ring shape, and lateral wall shock pad (13) are soft plastic pad.

4. A noise-reducing three-phase asynchronous machine according to claim 3, characterized in that: the material of protective cover (10) is the aluminum alloy, and protective cover (10) contain go-between and heat dissipation cover, and the surperficial threaded connection of go-between has set screw (11) that extend to motor housing (1) inside, and set screw (11) run through lateral wall shock pad (13), and the heat dissipation cover is the fretwork netted, and the side view shape of heat dissipation cover is circular, and the mesh diameter of heat dissipation cover is six centimetres at zero point.

5. A noise-reducing three-phase asynchronous machine according to claim 1, characterized in that: the rear cover plate (5) is circular, the rear cover plate (5) is a copper plate, the rear cover plate (5) is in threaded connection with the left side wall of the motor shell (1) through screws, a positive shock absorption pad (14) is fixedly mounted on the left side wall of the motor shell (1), and the diameter of the rear cover plate (5) is smaller than that of the protective cover (10).

6. A noise-reducing three-phase asynchronous machine according to claim 1, characterized in that: the thickness of the sound insulation board (9) is one half of that of the motor shell (1), the sound insulation board (9) is made of a microporous material, the shock absorption block (7) is a soft plastic board, and the bottom board (8) is a rubber board.

Images