CN202301687U - Low-frequency vibration isolation platform - Google Patents
Low-frequency vibration isolation platform Download PDFInfo
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- CN202301687U CN202301687U CN2011203807743U CN201120380774U CN202301687U CN 202301687 U CN202301687 U CN 202301687U CN 2011203807743 U CN2011203807743 U CN 2011203807743U CN 201120380774 U CN201120380774 U CN 201120380774U CN 202301687 U CN202301687 U CN 202301687U
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Abstract
The utility model relates to a low-frequency vibration isolation platform. A plurality of elastic bodies are arranged between an upper metal clamp plate and a lower metal clamp plate, a limiting structure is arranged between the upper metal clamp plate and the lower metal clamp plate, and each elastic body comprises a lower self-vibration frequency spring and a rubber gasket. The rubber gaskets are arranged at two ends of each lower self-vibration frequency spring, the limiting structure comprises inside blocking plates and edge blocking plates, the inside blocking plates are arranged on the lower metal clamp plate and bilaterally symmetrical relative to lower self-vibration frequency springs, and the edge blocking plates comprise upper edge blocking plates and lower edge blocking plates which are respectively arranged on two opposite sides of the upper metal clamp plate and the lower metal clamp plate. When the upper metal clamp plate is contacted with the inside blocking plates, the upper edge blocking plates are contacted with the lower edge blocking plates, most of vibration energy is absorbed and converted when vibration produced by a vibration device in running passes through the low-frequency vibration isolation platform, propagation of structural vibration can be effectively solved, the installation is convenient, and the effect is good.
Description
Technical field
The present invention relates to vibration isolation table, particularly a kind of low frequency vibration isolation platform.
Background technique
The transformer room noise is one of primary pollution source of sub-district at present.So-called transformer room noise is that what the 50Hz Ac was caused is the transformer low-frequency noise of fundamental frequency with 100Hz.The penetrating power of this low-frequency noise is very strong, and generally speaking, the transformer room room noise is merely 48 ~ 67dB (A), and upstairs premises noise rank is generally 36 ~ 48 dB (A).Resident family can obviously experience buzz, and this low-frequency noise can cause very big influence to people's health for a long time in the past.Want to solve this low-frequency noise and be not easy, it needs the improvement engineering of a system.Transformer noise has three sound sources, and the one, unshakable in one's determination, the 2nd, winding, the 3rd, cooling blower, the noise sum that promptly unloaded, load and cooling system cause.The reason that produces noise unshakable in one's determination is to constitute silicon steel plate unshakable in one's determination under the effect of alternating magnetic field, and it is magnetostriction that small variation can take place, and magnetostriction makes iron core do periodic vibration with the variation of excitation frequency.The vibrative reason of winding is that electric current produces electromagnetic force in winding, and leakage magnetic field also can make structural member produce vibration.Square being directly proportional of electromagnetic force (and vibration amplitude) and electric current, and square being directly proportional of the sound output of emission and vibration amplitude.Therefore, the sound output of emission and load current, load characteristic, three-phase equilibrium, input voltages etc. all have relation clearly.
Transformer has in the indoor propagation path of noise pollution that causes of dwelling house:
(1) mechanical vibration of transformer unit are along the machine room overland propagation, further along the house wall structure-borne to resident's indoor wall, the metope vibration excites air agitation once more, produces air-borne sound and imports people's ear into.
(2) transformer noise through casing vibration radiation air borne to the machine room metope; In the metope partial reflection, part is propagated along body of wall, is transmitted to each floor resident indoor wall along fabric structure always; The metope vibration excites air agitation once more, produces air-borne sound and imports people's ear into.
(3) the machine room air-borne sound is through hole diffraction such as machine rooms, and diffraction sound is transmitted to resident's indoor (if the adjacent needs with the residential building door and window of machine room are considered separately) through holes such as dwelling house door and windows.
The final dwelling house room noise that forms of this three partial noise and indoor Background noise stack back pollutes.From the energy point of view analysis, through our estimation, more than the ratio of 3 part acoustic energy be 206:1.075:0.0025, be about 82000:400:1.Therefore, the dwelling house room noise that causes for the control transformer unit pollutes, and mainly should control the structure-borne sound transmission that unit vibration causes, the structure-borne sound transmission that the air-borne sound of machine unit shell radiation is drawn sound can be with due regard to, machine room diffraction sound shadow is rung can ignore fully.
Summary of the invention
The utility model technical problem to be solved is, a kind of low frequency vibration isolation platform that reduces the transformer noise that unit vibration causes is provided.
For solving the problems of the technologies described above; The utility model adopts following technological scheme: a kind of low frequency vibration isolation platform; Comprise metal splint, following metal splint, a plurality of elastomer, limit structure; Said a plurality of elastomer is arranged between metal splint and the following metal splint, and said limit structure is arranged between metal splint and the following metal splint.
As a kind of improvement, said elastomer includes low natural frequency of vibration spring, rubber sheet gasket, and said rubber sheet gasket is arranged on low natural frequency of vibration both ends of the spring, and said low natural frequency of vibration spring is connected with last metal splint, following metal splint through rubber sheet gasket.
As a kind of improvement; Said limit structure comprises interior panelling, edge guard, said interior panelling be arranged on down on the metal splint and bilateral symmetry in low natural frequency of vibration spring setting, said edge guard comprises top edge baffle plate, lower limb baffle plate; Said top edge baffle plate is arranged on the relative dual-side of metal splint; Said lower limb baffle plate is arranged on down the relative dual-side of metal splint, and when said last metal splint touched interior panelling, said top edge baffle plate contacted with the lower limb baffle plate.
As a kind of improvement, said go up metal splint and down the surface of metal splint be provided with the vibrationproof skin, said vibrationproof skin respectively with last metal splint and down metal splint be integrated.
The utility model low frequency vibration isolation platform is arranged on below the vibratory equipment, and most of vibrational energy was absorbed conversion when vibratory equipment operation caused vibration through this device, can solve the structural vibration propagation effectively, installs more conveniently, and effect is fine.
Below in conjunction with accompanying drawing and embodiment the utility model is done further to describe.
Description of drawings
Fig. 1 is the structural representation of the utility model low frequency vibration isolation platform.
Fig. 2 is the stereogram of Fig. 1.
Embodiment
Like Fig. 1, shown in Figure 2; A kind of low frequency vibration isolation platform; Comprise metal splint 1, following metal splint 2, a plurality of elastomer, a plurality of limit structure, a plurality of elastomers are arranged between metal splint 1 and the following metal splint 2, and limit structure is arranged between metal splint 1 and the following metal splint 2.Preferred embodiment a kind of, elastomer includes low natural frequency of vibration spring 3, rubber sheet gasket 4, and said rubber sheet gasket 4 is arranged on low natural frequency of vibration spring 3 two ends, and low natural frequency of vibration spring 3 is connected with last metal splint 1, following metal splint 2 through rubber sheet gasket 4.Preferred embodiment a kind of; Said limit structure comprises interior panelling 5, edge guard 6; Said interior panelling 5 is arranged on down on the metal splint 2 and bilateral symmetry is provided with in low natural frequency of vibration spring 3; Said edge guard 6 comprises top edge baffle plate 6a, lower limb baffle plate 6b, and said top edge baffle plate 6a is arranged on the relative dual-side of metal splint 1, and said lower limb baffle plate 6b is arranged on down the relative dual-side of metal splint 2; When said last metal splint 1 touched interior panelling 5, said top edge baffle plate 6a contacted with lower limb baffle plate 6b.Preferred embodiment a kind of, the surface of metal splint 2 was provided with vibrationproof skin 7 under last metal splint 1 reached, and metal splint 2 was integrated under said vibrationproof skin 7 reached with last metal splint 1 respectively.
Working principle: vibration equipment is through the low natural frequency of vibration spring 3---rubber sheet gasket 4--vibrationproof skin 7-ground of vibrationproof skin 7---rubber sheet gasket 4---; Through above-mentionedly subtract, separated, vibrationproof; Vibrational energy 99% is absorbed conversion; Can solve structural vibration effectively and propagate, wait measure to be controlled at resident family's room noise about 27-33dB (A) through above-mentioned.
Claims (5)
1. low frequency vibration isolation platform; It is characterized in that comprising metal splint (1), following metal splint (2), a plurality of elastomer, a plurality of limit structure; Said a plurality of elastomer is arranged between metal splint (1) and the following metal splint (2), and said limit structure is arranged between metal splint (1) and the following metal splint (2).
2. low frequency vibration isolation platform according to claim 1; It is characterized in that said elastomer includes low natural frequency of vibration spring (3), rubber sheet gasket (4); Said rubber sheet gasket (4) is arranged on low natural frequency of vibration spring (3) two ends, and said low natural frequency of vibration spring (3) is connected with last metal splint (1), following metal splint (2) through rubber sheet gasket (4).
3. low frequency vibration isolation platform according to claim 1 and 2; It is characterized in that said limit structure comprises interior panelling (5), edge guard (6); Said interior panelling (5) is arranged on down on the metal splint (2) and bilateral symmetry is provided with in low natural frequency of vibration spring (3); Said edge guard (6) comprises top edge baffle plate (6a), lower limb baffle plate (6b); Said top edge baffle plate (6a) is arranged on the relative dual-side of metal splint (1); Said lower limb baffle plate (6b) is arranged on down the relative dual-side of metal splint (2), and when said last metal splint (1) touched interior panelling (5), said top edge baffle plate (6a) contacted with lower limb baffle plate (6b).
4. low frequency vibration isolation platform according to claim 1 and 2; The surface of metal splint (2) is provided with vibrationproof skin (7) to it is characterized in that reaching down by said upward metal splint (1), and metal splint (2) was integrated under said vibrationproof skin (7) reached with last metal splint (1) respectively.
5. low frequency vibration isolation platform according to claim 3; The surface of metal splint (2) is provided with vibrationproof skin (7) to it is characterized in that reaching down by said upward metal splint (1), and metal splint (2) was integrated under said vibrationproof skin (7) reached with last metal splint (1) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203807743U CN202301687U (en) | 2011-10-10 | 2011-10-10 | Low-frequency vibration isolation platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203807743U CN202301687U (en) | 2011-10-10 | 2011-10-10 | Low-frequency vibration isolation platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202301687U true CN202301687U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011203807743U Expired - Fee Related CN202301687U (en) | 2011-10-10 | 2011-10-10 | Low-frequency vibration isolation platform |
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| CN (1) | CN202301687U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470684A (en) * | 2013-09-18 | 2013-12-25 | 陈先伟 | Suspended low-frequency compound multi-layer vibration isolation base |
| CN103779053A (en) * | 2012-10-18 | 2014-05-07 | 株式会社东芝 | Static electric inductor |
| WO2014101481A1 (en) * | 2012-12-25 | 2014-07-03 | 国家电网公司 | Method for controlling structural acoustic transmission on basis of combined-type vibration isolation device |
| CN104179867A (en) * | 2014-07-25 | 2014-12-03 | 哈尔滨工业大学 | Buffering and limiting device for electromagnetic vibration isolator |
| CN104179868A (en) * | 2014-07-25 | 2014-12-03 | 哈尔滨工业大学 | Active and passive integrated electromagnetic vibration isolation device |
| CN106158304A (en) * | 2016-08-29 | 2016-11-23 | 成都创年科技有限公司 | A kind of denoising device of transformator |
| CN107068363A (en) * | 2017-02-21 | 2017-08-18 | 江苏东晔电气设备有限公司 | A kind of three-phase five-limb amorphous alloy transformer |
-
2011
- 2011-10-10 CN CN2011203807743U patent/CN202301687U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103779053A (en) * | 2012-10-18 | 2014-05-07 | 株式会社东芝 | Static electric inductor |
| WO2014101481A1 (en) * | 2012-12-25 | 2014-07-03 | 国家电网公司 | Method for controlling structural acoustic transmission on basis of combined-type vibration isolation device |
| US9534656B2 (en) | 2012-12-25 | 2017-01-03 | State Grid Corporation Of China (Sgcc) | Method for controlling structural acoustic transmission on basis of combined-type vibration isolation device |
| CN103470684A (en) * | 2013-09-18 | 2013-12-25 | 陈先伟 | Suspended low-frequency compound multi-layer vibration isolation base |
| CN103470684B (en) * | 2013-09-18 | 2016-03-02 | 陈先伟 | Suspension type low frequency composite multi-layer vibration isolation base |
| CN104179867A (en) * | 2014-07-25 | 2014-12-03 | 哈尔滨工业大学 | Buffering and limiting device for electromagnetic vibration isolator |
| CN104179868A (en) * | 2014-07-25 | 2014-12-03 | 哈尔滨工业大学 | Active and passive integrated electromagnetic vibration isolation device |
| CN104179867B (en) * | 2014-07-25 | 2016-04-06 | 哈尔滨工业大学 | For the buffer limiter of electromagnetism vibration isolator |
| CN104179868B (en) * | 2014-07-25 | 2016-04-06 | 哈尔滨工业大学 | Active-passive integrated formula electromagnetism isolation mounting |
| CN106158304A (en) * | 2016-08-29 | 2016-11-23 | 成都创年科技有限公司 | A kind of denoising device of transformator |
| CN107068363A (en) * | 2017-02-21 | 2017-08-18 | 江苏东晔电气设备有限公司 | A kind of three-phase five-limb amorphous alloy transformer |
| CN107068363B (en) * | 2017-02-21 | 2019-04-09 | 江苏东晔电气设备有限公司 | A kind of three-phase five-limb amorphous alloy transformer |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20161010 |