CN101222158A - O shaped rubber sealing ring structure for reducing electric motor structure noise - Google Patents
O shaped rubber sealing ring structure for reducing electric motor structure noise Download PDFInfo
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- CN101222158A CN101222158A CNA200710172709XA CN200710172709A CN101222158A CN 101222158 A CN101222158 A CN 101222158A CN A200710172709X A CNA200710172709X A CN A200710172709XA CN 200710172709 A CN200710172709 A CN 200710172709A CN 101222158 A CN101222158 A CN 101222158A
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- bearing
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- electric motor
- rubber seal
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Abstract
The invention relates to an O-shaped rubber sealing washer structure which is for reducing the noise of a motor structure and is arranged on an opening slot of a bearing housing. The invention comprises an electric motor 1, an end closure 2, a bearing 3 and a rotating shaft 5 and is characterized in that the bearing 3 is provided with an O-shaped rubber sealing washer 4, the rotating shaft 5 is provided with the bearing 3, the two ends of the electric motor 1 are provided with the end closure 2, the bearing 3 is provided with the O-shaped rubber sealing washer 4. An experiment shows that the arrangement of the O-shaped rubber sealing washer on the electric motor 1 can reduce the noise of he electric motor structure by 3dB, thereby improving the quality of the electric motor.
Description
Technical field
The present invention relates to a kind of structure that reduces the electric machine structure noise, relate to a kind of bearing chamber that is placed on that reduces the electric machine structure noise or rather and cut groove placement " O " type rubber seal coil structures.
Background technology
The AC and DC motor mainly is a supporting machinery equipment, and purposes is very extensive.
Along with development of modern science and technology, the plant equipment continuous advancement in technology, performance requirement to this supporting machinery equipment of AC and DC motor is also more and more higher, particularly construct noise (vibration acceleration), the vibration severity (vibration velocity) of motor generation have hindered the development of accurate mechanical equipment.
The vibration noise level has also reflected product design, manufacture level, is the important indicator of weighing mechanical product quality.
People generally recognize the importance that reduces vibration, noise now.To this, the AC and DC motor that develop low construct noise, vibration severity is crucial.
Design low construct noise motor, at first will make the electric machine structure noise clear is how to produce, relevant with what factor, the noise that hope is produced when estimating the motor actual motion in the design phase, and know the method that reduces noise.Because the construct noise of AC and DC motor, vibration severity, mainly the mechanical oscillation that produced by factors such as bearing vibration, rotor dynamic balancing and stator and rotor decentraction cause.
Construct noise is low when guaranteeing bearing working, must and produce structure and propose a series of requirements.Simultaneously, when beginning to design low construct noise motor, should scrutinize the loading force that motor and bearing thereof bear.
Summary of the invention
The objective of the invention is to propose a kind of measure that reduces the electric machine structure noise, cut groove at bearing chamber and place " O " type rubber seal coil structures, this electric machine structure can reduce electric machine structure noise and vibration severity, has improved the performance of product, has satisfied requirement of client.
For achieving the above object, technical scheme of the present invention is: " O " type rubber seal coil structures in addition on the mating surface between bearing of motor chamber and the bearing absorbs the vibration that bearing produces, thereby reduces the construct noise that motor bearings produces.
Beneficial effect of the present invention: in order to address this problem, in addition " O " type rubber seal coil structures can reduce bearing and produce the about 3dB of noise.
Below in conjunction with drawings and Examples to the technical scheme of the present invention detailed description of making comparisons.
Description of drawings
Fig. 1 is the indoor placement of end cap bearing " O " the type rubber seal schematic diagram of motor of the present invention;
Fig. 2 is the end cap bearing cell structure noise data figure of motor of the present invention.
Embodiment
With reference to Fig. 1, this is the indoor placement of end cap bearing " O " the type rubber seal structural representation of motor of the present invention.
As shown in the figure, motor 1, end cap 2, bearing 3, " O " type rubber seal 4, rotating shaft 5.Its installation site is bearing 3 to be installed, motor 1 two ends installation end cap 2, installation " O " type rubber seal 4 on bearing 3 in the rotating shaft 5.Groove is cut at the end cap bearing chamber in its position.
With reference to Fig. 2, this is the end cap bearing cell structure noise data figure of motor of the present invention.
As shown in the figure, this is that motor is the test that adds " O " type rubber seal and do not add " O " type rubber seal.
In order to address these problems, research structure Zao Sheng Frequency spectrum by analysis, bearing produces the frequency spectrum between noise 1.6K～6.3K, finds that 1.6K, 4K, 5K, 6.3K numerical value are big especially, illustrates that the construct noise of motor bearings generation is very big.Therefore motor bearings and end cap bearing chamber fit dimension and structure are very big to electric machine structure noise, vibration severity influence, and bearing outer ring bearing and acts on the alternating force on the motor bearings parts and pass to end cap, so end cap is significant with the damping characteristic between bearing cooperates.
Directly contact between bearing of motor chamber and the bearing at present and be excessive cooperation, so construct noise of bearing generation, vibration severity is quite big, its construct noise total value 130dB side-to-side vibrations earthquake intensity 1.8mm/s～2.8mm/s, therefore whether the vibration that bearing produces can be eliminated or absorbs, this is the direction of research, we know that rubber can the intussusception mechanical oscillation reaches and keep away the effect of shaking, cut groove at two end cap bearing chambers for this reason and place " O " type rubber seal as shown in Figure 1, through on same motor, testing, the construct noise that consequently adds " O " type rubber seal than the construct noise that does not add " O " type rubber seal at 1.6K, 4K, 5K, 6.3K reduce a lot, total value reduces 3dB shown in Fig. 2 construct noise data, and vibration severity 0.3mm/s has reached effect.We reduce the electric machine structure noise and vibration is strong in the indoor placement of end cap bearing " O " the type rubber seal of all AC three-phase asynchronous motor at present, have improved the performance of product, have satisfied requirement of client.
Though the present invention describes with reference to the above embodiments; but those of ordinary skill in the art; will be appreciated that above embodiment is used for illustrating the present invention; should understand and wherein can make variations and modifications and do not break away from the present invention in a broad sense; so be not as qualification of the present invention; as long as in connotation scope of the present invention, to the variation of above-described embodiment, the protection range that distortion all will fall into claim of the present invention.
Claims (2)
1. the bearing chamber that is placed on that reduces the electric machine structure noise cuts groove placement " O " type rubber seal coil structures, comprise motor (1), end cap (2), bearing (3), rotating shaft (5), it is characterized in that: described structure, on mating surface between motor (1) bearing chamber and the bearing, add one " O " type rubber seal (4) structure, its installation site is, rotating shaft (5) is gone up bearing (3) is installed, end cap (2) is installed at motor (1) two ends, goes up at bearing (3) " O " type rubber seal (4) is installed.
2. the bearing chamber that is placed on of reduction electric machine structure noise as claimed in claim 1 cuts groove placement " O " type rubber seal coil structures, and it is characterized in that: described " O " type rubber seal (4) is placed on two end caps (2) bearing chamber and cuts groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710172709XA CN101222158A (en) | 2007-12-21 | 2007-12-21 | O shaped rubber sealing ring structure for reducing electric motor structure noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710172709XA CN101222158A (en) | 2007-12-21 | 2007-12-21 | O shaped rubber sealing ring structure for reducing electric motor structure noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101222158A true CN101222158A (en) | 2008-07-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200710172709XA Pending CN101222158A (en) | 2007-12-21 | 2007-12-21 | O shaped rubber sealing ring structure for reducing electric motor structure noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101222158A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102906975A (en) * | 2010-05-26 | 2013-01-30 | 日立汽车系统株式会社 | Rotary electric machine |
| CN110165815A (en) * | 2019-05-21 | 2019-08-23 | 卧龙电气驱动集团股份有限公司 | A kind of shaft vibrating motor sealing structure of shaft end |
| CN113644779A (en) * | 2021-07-15 | 2021-11-12 | 浙江零跑科技股份有限公司 | New forms of energy car damping vibration isolation noise reduction device |
| CN116365779A (en) * | 2023-06-01 | 2023-06-30 | 常州大牛汽车技术有限公司 | Motor capable of preventing operation fluctuation and having autonomous noise reduction function |
-
2007
- 2007-12-21 CN CNA200710172709XA patent/CN101222158A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102906975A (en) * | 2010-05-26 | 2013-01-30 | 日立汽车系统株式会社 | Rotary electric machine |
| CN110165815A (en) * | 2019-05-21 | 2019-08-23 | 卧龙电气驱动集团股份有限公司 | A kind of shaft vibrating motor sealing structure of shaft end |
| CN113644779A (en) * | 2021-07-15 | 2021-11-12 | 浙江零跑科技股份有限公司 | New forms of energy car damping vibration isolation noise reduction device |
| CN113644779B (en) * | 2021-07-15 | 2022-07-19 | 浙江零跑科技股份有限公司 | New forms of energy car damping vibration isolation noise reduction device |
| CN116365779A (en) * | 2023-06-01 | 2023-06-30 | 常州大牛汽车技术有限公司 | Motor capable of preventing operation fluctuation and having autonomous noise reduction function |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20080716 |