CN113241886B - Frequency conversion sound insulation equipment for large-scale motor - Google Patents
Frequency conversion sound insulation equipment for large-scale motor Download PDFInfo
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- CN113241886B CN113241886B CN202110317949.4A CN202110317949A CN113241886B CN 113241886 B CN113241886 B CN 113241886B CN 202110317949 A CN202110317949 A CN 202110317949A CN 113241886 B CN113241886 B CN 113241886B
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- sound insulation
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- air bag
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/03—Covers
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention discloses frequency conversion sound insulation equipment for a large-scale motor, which comprises a foundation and an equipment groove which is formed in the foundation and used for installing the motor, wherein a cover plate is arranged at the notch of the equipment groove, a noise detector used for detecting the working noise of the motor is arranged in the equipment groove, an elastic air bag is fixedly arranged on the lower end surface of the cover plate, and a sound absorption ball is filled in the elastic air bag. According to the invention, by arranging the sound insulation board consisting of the sound absorption ball and the elastic air bag, when the intensity of noise generated by the operation of the motor in the equipment groove is changed, the sound absorption ball and the elastic air bag are compressed and expanded by matching the electromagnet, the permanent magnet plate and the return spring, so that the sound insulation frequency of the sound insulation board can be changed along with the intensity of the noise generated by the vibration of the motor, the sound insulation effect can be improved, and the resonance between the sound insulation board and the motor can be avoided.
Description
Technical Field
The invention relates to the technical field of sound insulation equipment, in particular to variable-frequency sound insulation equipment for a large-scale motor.
Background
Some central air conditioning or special electromechanical device need use large-scale motor, and the motor during operation can send very big noise owing to the vibration, can install the motor in the underground in order to avoid noise pollution and save occupation of land space, protects and gives sound insulation through the lid that gives sound insulation.
Traditional acoustic celotex board structure is generally through being become by fluffy foam or inhale the sound cotton and constitute, the structure of acoustic celotex board is fixed, its syllable-dividing frequency is fixed promptly, but along with the difference of its rotational speed during the motor operation, it produces vibration noise intensity also different, thereby lead to the acoustic celotex board sometimes can with the vibration resonance of motor, so not only can influence the syllable-dividing effect of acoustic celotex board and can harm electrical equipment and acoustic celotex board, still some acoustic celotex boards are in order to guarantee sufficient syllable-dividing effect, its thickness is great, the filler is more, but so can occupy more usage space, and it is also very inconvenient to install.
Disclosure of Invention
The invention aims to solve the defects that the traditional motor sound insulation equipment in the prior art is single in structure and easy to resonate when being used for equipment with large-amplitude change of noise intensity, and provides frequency conversion sound insulation equipment for a large-scale motor.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a frequency conversion sound-proof equipment for large-scale motor, includes the equipment groove that is used for installing the motor of seting up on ground and the ground, the notch department in equipment groove installs the apron, the equipment inslot is equipped with the noise detection appearance that is used for detecting motor noise size, terminal surface fixed mounting has elastic airbag under the apron, the elastic airbag intussuseption is filled with the sound absorption ball.
In the frequency conversion sound insulation equipment for the large-scale motor, limiting grooves are symmetrically formed in the groove walls of the equipment grooves, a plurality of movable plates are connected to the limiting grooves in a sliding mode, a reset spring is elastically connected between the inner bottom wall of each limiting groove and the lower end face of each movable plate, and the upper end faces of the movable plates are fixedly connected with the lower end faces of the elastic air bags in a gluing mode.
In the frequency conversion sound insulation equipment for the large-scale motor, the movable plate and the cover plate are respectively provided with the permanent magnetic plate and the electromagnet which correspond to each other, the output end of the noise detector is coupled with the input end of the electromagnet, and the lower end face of the movable plate is provided with the magnetic isolation plate.
In the frequency conversion sound insulation equipment for the large-scale motor, an air inlet pipe and an air outlet pipe are respectively communicated with the interior of the elastic air bag and the equipment groove and the outside, and a first check valve and a second check valve are respectively arranged in the air outlet pipe and the air inlet pipe.
In above-mentioned frequency conversion sound-proof equipment for large-scale motor, the sound absorption ball includes the casing that comprises the elastic ball and the installation piece that the elastic ball is inside to be set up, the spout has all been seted up on every side of installation piece, every all there is the slider through induction coil elastic connection on the cell wall of spout, and sliding connection between slider and the spout, every equal fixedly connected with branch on the slider, and the one end that the slider was kept away from to branch all runs through the cell wall of spout and the lateral wall of installation piece in proper order and with the inner wall fixed connection of elastic ball.
In the frequency conversion sound insulation equipment for the large-scale motor, the elastic balls are made of rubber materials, and sound absorption cotton is filled in each elastic ball.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, by arranging the sound insulation board consisting of the sound absorption ball and the elastic air bag, when the intensity of noise generated by the operation of the motor in the equipment groove is changed, the sound absorption ball and the elastic air bag are compressed and expanded by matching the electromagnet, the permanent magnet plate and the return spring, so that the sound insulation frequency of the sound insulation board can be changed along with the intensity of the noise generated by the vibration of the motor, the sound insulation effect can be improved, and the resonance between the sound insulation board and the motor can be avoided.
2. According to the invention, by arranging the induction coil and the supporting rod, when the electromagnetic field intensity of the electromagnetic iron is enhanced, induction current is generated in the induction coil, and under the action of the induction current on the induction coil, the induction coil drives the supporting rod to prop against the inner wall of the elastic ball, so that the elastic ball and the sound-absorbing cotton can be assisted to expand, and the situation that the sound-absorbing cotton and the elastic ball cannot expand rapidly after being compressed to reduce the sound insulation effect of the equipment is avoided.
3. According to the invention, through the arrangement of the air inlet pipe and the exhaust pipe, when the movable plate moves up and down to repeatedly extrude and stretch the elastic air bag, high-temperature gas in the equipment groove can be intermittently exhausted to the outside through the matching of the air inlet pipe and the exhaust pipe, so that the flowing of the gas inside the equipment groove and the gas outside is accelerated, and further, the heat dissipation and the cooling of the motor in the equipment groove are carried out.
Drawings
Fig. 1 is a schematic structural diagram of a frequency conversion sound insulation device for a large-scale motor according to the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
fig. 3 is a schematic view of a partial internal structure of a sound absorption ball in the variable frequency sound insulation device for the large motor.
In the figure: the device comprises a foundation 1, an equipment groove 2, a cover plate 3, a noise detector 4, a limiting groove 5, a movable plate 6, a return spring 7, an elastic air bag 8, a sound absorption ball 9, an elastic ball 901, an installation block 902, a sliding chute 903, an induction coil 904, a sliding block 905, a support rod 906, an electromagnet 10, a permanent magnet plate 11, a magnetic separation plate 12, an exhaust pipe 13 and an air inlet pipe 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, a frequency conversion sound-proof equipment for large-scale motor, including foundation 1 and the equipment groove 2 that is used for installing the motor that sets up on the foundation 1, the notch department fixed mounting in equipment groove 2 has apron 3, is equipped with the noise detector 4 that is used for detecting the big or small motor noise in the equipment groove 2, and the terminal surface fixed mounting has elastic air bag 8 under the apron 3, and the intussuseption of elastic air bag 8 is filled with sound absorption ball 9.
According to the invention, limiting grooves 5 are symmetrically formed in the groove wall of the equipment groove 2, a movable plate 6 is connected in the limiting grooves 5 in a sliding manner, a return spring 7 is elastically connected between the inner bottom wall of each limiting groove 5 and the lower end face of the movable plate 6, and the upper end face of the movable plate 6 is fixedly connected with the lower end face of an elastic air bag 8 in a gluing manner;
the movable plate 6 and the cover plate 3 are respectively provided with a permanent magnetic plate 11 and an electromagnet 10 which correspond to each other, the magnetic poles of the opposite sides of the permanent magnetic plate 11 and the electromagnet 10 are the same, namely the permanent magnetic plate 11 and the electromagnet 10 repel each other, the output end of the noise detector 4 is coupled with the input end of the electromagnet 10, a detection module and a conversion module are arranged in the noise detector 4, the detection module can detect the intensity of noise generated by the operation of the motor, and the conversion module can convert the intensity of the noise into the current output to the electromagnet 10 by an external power supply, so that the intensity of the magnetic field of the electromagnet 10 is in direct proportion to the intensity of the noise generated by the operation of the motor, and the lower end surface of the movable plate 6 is provided with a magnetic isolation plate 12, thereby preventing the magnetic fields of the permanent magnetic plate 11 and the electromagnet 10 from influencing the motor;
an air inlet pipe 14 and an air outlet pipe 13 are respectively communicated between the elastic air bag 8 and the inside and the outside of the equipment groove 2, a first one-way valve and a second one-way valve are respectively installed in the air outlet pipe 13 and the air inlet pipe 14, the first one-way valve only allows air or liquid in the elastic air bag 8 to be exhausted to the outside through the air outlet pipe 13, and the second one-way valve only allows air or liquid in the equipment groove 2 to enter the elastic air bag 8 through the air inlet pipe 14;
inhale sound ball 9 and include the casing that constitutes by elastic ball 901 and the installation piece 902 of the inside rectangle that sets up of elastic ball 901, spout 903 has all been seted up on every side of installation piece 902, all there is slider 905 through induction coil 904 elastic connection on every spout 903 and the just right cell wall of elastic ball 901 inner wall, and sliding connection between slider 905 and the spout 903, equal fixedly connected with branch 906 on every slider 905, and the one end that slider 905 was kept away from to branch 906 all runs through the cell wall of spout 903 and the lateral wall of installation piece 902 in proper order and with the inner wall fixed connection of elastic ball 901, elastic ball 901 is made by the rubber material, it has the sound cotton of inhaling to all fill in every elastic ball 901.
The invention can be illustrated by the following operating modes: when the motor works stably, the change range of the intensity of the generated noise is small, the change of the magnetic field intensity of the electromagnet 10 is small, the movable plate 6 extrudes the elastic air bag 8 under the action of the elastic force of the plurality of return springs 7, the sound absorption cotton in the elastic air bag 8 is compressed, the volume of the sound insulation plate formed by the plurality of sound absorption balls 9 is small, the density is large, and the noise generated by the motor is absorbed and weakened;
when the motor runs at high power in a peak period, the intensity of noise generated by the motor is increased, the magnetic field intensity of the electromagnet 10 is increased, the movable plate 6 compresses the return spring 7 to move downwards under the action of magnetic repulsion force between the electromagnet 10 and the permanent magnetic plate 11, the elastic air bag 8 is stretched, the sound-absorbing balls 9 in the elastic air bag 8 expand under the action of self elasticity to fill the elastic air bag 8, and at the moment, the sound-insulating plate formed by the sound-absorbing balls 9 has larger volume and smaller density, so that the noise generated by the motor can be absorbed and weakened;
meanwhile, when the magnetic field intensity of the electromagnet 10 changes, the magnetic flux of the induction coil 904 changes, then induction current is generated on the induction coil 904, and then induction magnetic field is generated, because the induction magnetic field direction generated on the adjacent coil turns in the induction coil 904 is the same, then the adjacent coil turns attract each other, then the induction coil 904 contracts, because one end of the induction coil 904 is fixedly connected with the groove wall of the sliding groove 903, then the sliding block 905 moves towards the direction close to the groove wall of the sliding groove 903, then the sliding block 905 drives the supporting rod 906 to extrude the inner wall of the elastic ball 901, thereby the elastic ball 901 and the sound absorption cotton can be assisted to expand, the sound absorption cotton and the elastic ball 901 cannot expand rapidly after being compressed to reduce the sound insulation effect of the device, when the induction current in the induction coil 904 disappears, the sliding block 905 and the supporting rod 906 reset under the elastic action of the induction coil 904, the reciprocating in this way, the sound insulation frequency of the sound insulation board composed of the sound absorption ball 9 and the elastic air bag 8 can be along with the noise intensity generated by the vibration of the motor And the change can not only improve the sound insulation effect, but also can avoid the sound insulation board and the motor from resonating.
It is worth to be noted that when the movable plate 6 moves up and down to repeatedly extrude and stretch the elastic airbag 8, the high-temperature gas in the equipment tank 2 can be intermittently exhausted to the outside through the matching of the air inlet pipe 14 and the air outlet pipe 13, so that the flowing of the gas inside the equipment tank 2 and the gas outside is accelerated, and further the heat dissipation and cooling of the motor in the equipment tank 2 are performed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A frequency conversion sound insulation device for a large-scale motor comprises a foundation (1) and a device groove (2) which is formed in the foundation (1) and used for installing the motor, and is characterized in that a cover plate (3) is installed at the notch of the device groove (2), a noise detector (4) used for detecting the working noise of the motor is arranged in the device groove (2), an elastic air bag (8) is fixedly installed on the lower end face of the cover plate (3), and a sound absorption ball (9) is filled in the elastic air bag (8);
inhale sound ball (9) including the casing that constitutes by elastic ball (901) and the inside installation piece (902) that sets up of elastic ball (901), spout (903) have all been seted up on every side of installation piece (902), every all there is slider (905) through induction coil (904) elastic connection on the cell wall of spout (903), and sliding connection between slider (905) and spout (903), every equal fixedly connected with branch (906) on slider (905), and branch (906) keep away from the one end of slider (905) all run through the cell wall of spout (903) in proper order and the lateral wall of installation piece (902) and with the inner wall fixed connection of elastic ball (901).
2. The frequency conversion sound insulation device for the large motor according to claim 1, wherein the device groove (2) is symmetrically provided with a plurality of limiting grooves (5), a movable plate (6) is connected to the plurality of limiting grooves (5) in a sliding manner, a return spring (7) is elastically connected between the inner bottom wall of each limiting groove (5) and the lower end surface of the movable plate (6), and the upper end surface of the movable plate (6) is fixedly connected to the lower end surface of the elastic air bag (8) in a gluing manner.
3. The frequency conversion sound insulation device for the large motor according to claim 2, wherein the movable plate (6) and the cover plate (3) are respectively provided with a permanent magnet plate (11) and an electromagnet (10) which correspond to each other, the output end of the noise detector (4) is coupled with the input end of the electromagnet (10), and the lower end surface of the movable plate (6) is provided with a magnetic isolation plate (12).
4. The frequency conversion sound insulation equipment for the large motor according to claim 1, wherein an air inlet pipe (14) and an air outlet pipe (13) are respectively communicated between the elastic air bag (8) and the inside and the outside of the equipment groove (2), and a first check valve and a second check valve are respectively installed in the air outlet pipe (13) and the air inlet pipe (14).
5. The variable frequency sound insulation equipment for the large motor according to claim 1, wherein the elastic balls (901) are made of rubber, and sound absorption cotton is filled in each elastic ball (901).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317949.4A CN113241886B (en) | 2021-03-25 | 2021-03-25 | Frequency conversion sound insulation equipment for large-scale motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110317949.4A CN113241886B (en) | 2021-03-25 | 2021-03-25 | Frequency conversion sound insulation equipment for large-scale motor |
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| Publication Number | Publication Date |
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| CN113241886A CN113241886A (en) | 2021-08-10 |
| CN113241886B true CN113241886B (en) | 2022-06-07 |
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| CN113898723B (en) * | 2021-10-08 | 2022-06-17 | 浙江午马减速机有限公司 | Noise reduction box structure for gear speed reducer |
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| CN206004454U (en) * | 2016-08-30 | 2017-03-08 | 泰信电机（天津）有限公司 | A kind of motor damping mechanism |
| CN107124067A (en) * | 2017-06-09 | 2017-09-01 | 王顶云 | A kind of novel permanent magnetic brushless electric machine being readily transported |
| CN209313628U (en) * | 2018-12-24 | 2019-08-27 | 惠州市信力电机有限公司 | A kind of electric tool motor |
| CN210201567U (en) * | 2019-05-09 | 2020-03-27 | 罗羊奕 | Motor rotor structure of electric automobile |
| CN110890806B (en) * | 2019-11-13 | 2021-02-09 | 徐州铭尊机电有限公司 | Storage box with heat dissipation and shock-absorbing functions for electric tricycle motor |
| CN112542151A (en) * | 2020-12-08 | 2021-03-23 | 李讲讲 | Frequency conversion multistage vibration sound insulation cover |
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Effective date of registration: 20220520 Address after: 154000 380 Guangfu East Road, Qianjin District, Jiamusi City, Heilongjiang Province Applicant after: JIAMUSI ELECTRIC MACHINE Co.,Ltd. Address before: 312000 Zhejiang Lijing Electrical Equipment Co., Ltd., quezui village, Songxia Town, Shangyu District, Shaoxing City, Zhejiang Province Applicant before: Wang Jinhuan |
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