CN2752538Y - Low-frequency large-loading rubber vibration isolator - Google Patents
Low-frequency large-loading rubber vibration isolator Download PDFInfo
- Publication number
- CN2752538Y CN2752538Y CN 200420114714 CN200420114714U CN2752538Y CN 2752538 Y CN2752538 Y CN 2752538Y CN 200420114714 CN200420114714 CN 200420114714 CN 200420114714 U CN200420114714 U CN 200420114714U CN 2752538 Y CN2752538 Y CN 2752538Y
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- iron piece
- rubber body
- vibration isolator
- rubber
- ironware
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Abstract
The utility model provides a low-frequency and large-loading rubber vibration isolator, which comprises an upper ironware, a lower ironware and a rubber body, wherein the rubber body is clamped between the upper ironware and the lower ironware. The utility model is characterized in that the upper ironware forms a T-shaped structure and comprises a top plate and a middle baffle plate which is connected to the lower side of the top plate, the lower ironware forms a U-shaped structure and comprises a bottom plate and two side baffle plates which are connected to both sides of the bottom plate, the upper part of the rubber body is provided with a structure which is matched with the upper ironware and is connected to the lower side of the upper ironware, and both side surfaces of the rubber body form a concave arc shape. The lower part of the rubber body is provided with a structure which is matched with the lower ironware and is embedded in the U-shaped body of the lower ironware, and the middle part of the rubber body is provided with an arc-shaped groove which is perforated along a length direction. The utility model has the advantages of strong carrying capacity, good rigidity linearity and low natural frequency, and can meet the needs of the vibration damping and the noise reduction for a large-sized power device of a main power system in the vibration damping and noise reduction engineering of a real ship.
Description
Technical field
The utility model relates to a kind of vibration and noise reducing equipment, the big load rubber vibration isolator of particularly a kind of low frequency.
Background technique
Along with the reach of science, modern ships requirement disguised to it and travelling comfort is also more and more higher, the vibration and noise reducing of ship power machinery and shock resistant technique have received the concern of each side, particularly the noise reduction technology of main power system large-sized power machinery more being drawn is to pay attention to, thus the vibration isolator that ship power machinery vibration and noise reducing is used require also constantly big to bearing capacity, natural frequency is low, shock resistance good and the direction being convenient to change develops.
The existing rubber vibration isolator of China is distinguished by the working forms of its stressed carrying back rubber, mainly contains two kinds of forms of compressive strain and shear deformation:
1) form that rubber is out of shape by compression after the carrying
The rubber vibration isolator of this form, all be to copy and design according to the product of the former Soviet Union, as E type, EA type, the flat rubber vibration isolator of SH type, its bearing capacity can reach 2300 kilograms, but because its rubber of the stressed carrying of vibration isolator back is to be out of shape by compression, therefore the natural frequency of vibration isolator is than higher, basically all between 25Hz-30Hz; It is non-linear that its rigidity is hardware features, therefore can't absorb impact energy, and shock resistance is poor, can't satisfy current vibration and noise reducing and the shock proof requirement of ship power machinery at all.If again to the design of low frequency direction, the stress that then will cause the vibration isolator rubber material substantially exceeds its intensity and allows requirement, but also will cause dimly visible elephant of mistake of vibration isolator with the natural frequency of the vibration isolator of this form.
2) carrying back rubber is subjected to the form of shear deformation
The rubber vibration isolator of this form is the product with reference to western developed countries such as the U.S. and Europe, is developed voluntarily by China.Shearing type rubber vibration isolators such as 6JX type, JG type, BE type are typically arranged, and its bearing capacity is generally all little, arrives the hundreds of kilogram at tens kilograms usually, and maximum also is no more than 1500 kilograms; Its natural frequency is lower than compression-type, generally about 10Hz since the stressed carrying of the rubber vibration isolator of this form afterwards its rubber be subjected to shear deformation, so the rigidity of its vibration isolator to be software feature non-linear.Although absorption, the shock resistance of the vibration isolator impact energy of this form are all better,, therefore in using, real ship power machinery vibration and noise reducing engineering is very limited because its bearing capacity mostly is middle or small load.If keep its natural frequency constant the vibration isolator of this pattern, again to strengthening the loading direction design, to cause that then its rubber volume increases by the cube of load increment, bring very big difficulty for real boatman Cheng Yingyong, particularly for the large-sized power machinery of main power system on the real ship, the rubber vibration isolator of this form, its bearing capacity can't satisfy the large-sized power machinery vibration and noise reducing and the shock proof load bearing requirements of main power system on the real ship at all.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming that single bearing capacity is little, natural frequency is high that the above-mentioned rubber vibration isolator of prior art exists, and provides a kind of low frequency big load rubber vibration isolator.
To achieve these goals, the utility model has adopted following technological scheme: the big load rubber vibration isolator of a kind of low frequency, comprise upper iron piece, lower iron piece and rubber body, in the middle of rubber body is clamped in by upper iron piece and lower iron piece, described upper iron piece is " T " font structure, comprises top board and the middle baffle plate that is connected under the top board; Described lower iron piece is " U " font structure, comprises base plate and two lateral retaining plates that are connected the base plate both sides; The top of described rubber body is provided with the below that is connected upper iron piece with the adaptive structure of upper iron piece, and the bi-side, top of rubber body are concave arc shape; The bottom of described rubber body is provided with the adaptive structure of lower iron piece and is inlaid in " U " body of lower iron piece, is provided with a curve bath that connects along its length in the middle of the bottom of rubber body.
The middle baffle plate bi-side of described upper iron piece respectively are provided with a plurality of vertical arc raised lines.
The inner side surface of two lateral retaining plates of described lower iron piece respectively is provided with a plurality of vertical arc raised lines.
The height of described upper iron piece middle baffle plate is the 45-50% of rubber body height.
The height of described lower iron piece two lateral retaining plates is the 40-45% of rubber body height.
The bottom width of described rubber body lower curved groove is the twice of height, and height is identical with the height of lower iron piece two lateral retaining plates.
The width of described lower iron piece is greater than the width of upper iron piece, and the lower width of described rubber body is greater than upper width.
The big load rubber vibration isolator of low frequency of the present utility model makes it compared with prior art owing to adopted above technological scheme, has following advantage and characteristics;
1, owing on upper iron piece, be provided with middle baffle plate, on lower iron piece, is provided with two lateral retaining plates, increased the constraint and the bearing area of rubber, make the bearing capacity of vibration isolator obtain enhancing.
2, because both sides, rubber body top are designed to concave arc shape, is provided with curve bath in the middle of the bottom, makes vibration isolator " concave arc " face under external load function, become the shearing loaded state, the shearing low frequency performance of vibration isolator is effectively guaranteed with rubber between the curve bath.
3, owing to respectively be provided with a plurality of vertical arc raised lines in the middle baffle plate both sides of vibration isolator upper iron piece, inner side surface at two lateral retaining plates of lower iron piece respectively is provided with a plurality of vertical arc raised lines, further increased the area of contact of rubber body and last lower iron piece, thereby also increased the constraint and the bearing area of rubber, the bearing capacity of vibration isolator is further enhanced.
4, since the width of lower iron piece greater than the width of upper iron piece, the lower width of rubber body makes the monnolithic case of vibration isolator be trapezium structure greater than upper width, bearing capacity is strong, good stability.
The utility model can satisfy the requirement of the large-sized power plant vibration and noise reducing of main power system in the real ship vibration and noise reducing engineering.Developed the DY-50 type rubber vibration isolator of the DY-30 type rubber vibration isolator of 3000 kilograms of load ratings, natural frequency 4.5Hz and 5000 kilograms of load ratings, natural frequency 4.4Hz.
Description of drawings
Fig. 1 is the structural front view of the big load rubber vibration isolator of the utility model low frequency;
Fig. 2 is the plan view of the big load rubber vibration isolator of low frequency shown in Figure 1;
Fig. 3 is the side view of the big load rubber vibration isolator of low frequency shown in Figure 1.
Embodiment
See also Fig. 1, cooperate referring to Fig. 2, Fig. 3.The big load rubber vibration isolator of low frequency of the present utility model, comprise upper iron piece 1, lower iron piece 2 and rubber body 3, in the middle of rubber body 3 is clamped in by upper iron piece 1 and lower iron piece 2, wherein, the width of lower iron piece 2 is greater than the width of upper iron piece 1, the lower width of rubber body 3 makes the monnolithic case of vibration isolator be trapezoidal greater than upper width.
Upper iron piece 1 in the utility model is " T " font structure, comprises top board 11 and the middle baffle plate 12 that is connected under the top board, and middle baffle plate 12 bi-side respectively are provided with a plurality of vertical arc raised lines 121, and in the present embodiment, this arc raised line 121 is 3; The height of middle baffle plate is the 45-50% of rubber body height, and in the present embodiment, the height of middle baffle plate is 50% of a rubber body height.
The top of the rubber body 3 in the utility model is provided with the below that is connected upper iron piece with the adaptive structure of upper iron piece, and the bi-side, top of rubber body are concave arc shape 31; The bottom of rubber body is provided with the adaptive structure of lower iron piece and is inlaid in " U " body of lower iron piece, is provided with a curve bath 32 that connects along its length in the middle of the bottom of rubber body; The bottom width of this curve bath 32 is the twice of height, and height is identical with the height of lower iron piece two lateral retaining plates.
The big load rubber vibration isolator of low frequency of the present utility model is also according to the natural rubber good springiness, and technology capability, curability are good, but oil resistant, heat-resisting, ageing-resistant ability are relatively poor; And nitrile rubber oil resistant, heat-resisting, ageing-resistant ability are strong, technology capability and curability better but the relatively poor characteristic separately of elasticity and the intermiscibility requirement of these two kinds of rubber vulcanization systems, take 1: 3 the mixing one-tenth high elasticity of proportioning, high physical and mechanical properties and oil resistant, heat-resisting, the ageing-resistant glue kind that is mixed, be made into rubber body, guaranteed the big load-bearing ability and the low frequency characteristic of vibration isolator from rubber material.
The big load rubber vibration isolator of low frequency of the present utility model in use, need be connected with the upper iron piece 1 of vibration isolator by bolt by the power equipment of vibration isolation, to need the hull pedestal of separating vibration to connect with the lower iron piece 2 of vibration isolator by bolt, produce resiliently deformable under the vibration force effect that the rubber body 3 of vibration isolator produces when power equipment turns round, thereby the vibration force of isolating or reducing to produce when power equipment turns round reaches the purpose of vibration and noise reducing to the transmission of hull pedestal.
Claims (7)
1, the big load rubber vibration isolator of a kind of low frequency, comprise upper iron piece, lower iron piece and rubber body, in the middle of rubber body was clamped in by upper iron piece and lower iron piece, it is characterized in that: described upper iron piece was " T " font structure, comprised top board and the middle baffle plate that is connected under the top board; Described lower iron piece is " U " font structure, comprises base plate and two lateral retaining plates that are connected the base plate both sides; The top of described rubber body is provided with the below that is connected upper iron piece with the adaptive structure of upper iron piece, and the bi-side, top of rubber body are concave arc shape; The bottom of described rubber body is provided with the adaptive structure of lower iron piece and is inlaid in " U " body of lower iron piece, is provided with a curve bath that connects along its length in the middle of the bottom of rubber body.
2, the big load rubber vibration isolator of low frequency according to claim 1 is characterized in that: the middle baffle plate bi-side of described upper iron piece respectively are provided with a plurality of vertical arc raised lines.
3, the big load rubber vibration isolator of low frequency according to claim 1 is characterized in that: the inner side surface of two lateral retaining plates of described lower iron piece respectively is provided with a plurality of vertical arc raised lines.
4, the big load rubber vibration isolator of low frequency according to claim 1, it is characterized in that: the height of described upper iron piece middle baffle plate is the 45-50% of rubber body height.
5, the big load rubber vibration isolator of low frequency according to claim 1, it is characterized in that: the height of described lower iron piece two lateral retaining plates is the 40-45% of rubber body height.
6, the big load rubber vibration isolator of low frequency according to claim 1 is characterized in that: the bottom width of described rubber body lower curved groove is the twice of height, and height is identical with the height of lower iron piece two lateral retaining plates.
7, the big load rubber vibration isolator of low frequency according to claim 1, it is characterized in that: the width of described lower iron piece is greater than the width of upper iron piece, and the lower width of described rubber body is greater than upper width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420114714 CN2752538Y (en) | 2004-12-24 | 2004-12-24 | Low-frequency large-loading rubber vibration isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420114714 CN2752538Y (en) | 2004-12-24 | 2004-12-24 | Low-frequency large-loading rubber vibration isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2752538Y true CN2752538Y (en) | 2006-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420114714 Expired - Fee Related CN2752538Y (en) | 2004-12-24 | 2004-12-24 | Low-frequency large-loading rubber vibration isolator |
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| CN (1) | CN2752538Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102282066A (en) * | 2009-02-18 | 2011-12-14 | Zf腓德烈斯哈芬股份公司 | Connecting piece that can be inserted into a boat's hull |
| CN103352957A (en) * | 2013-07-11 | 2013-10-16 | 中国船舶重工集团公司第七○二研究所 | Vertical-type plate rack vibration isolation base |
| CN104989761A (en) * | 2015-07-09 | 2015-10-21 | 中国能建集团装备有限公司北京技术中心 | Elastic support structure |
| CN108150603A (en) * | 2017-08-17 | 2018-06-12 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of inertial navigation equipment damper |
| CN110594330A (en) * | 2019-07-19 | 2019-12-20 | 中国船舶重工集团公司第七一九研究所 | Frequency conversion isolator |
| CN110667232A (en) * | 2019-09-18 | 2020-01-10 | 固高科技(深圳)有限公司 | Electric carving needle assembly and electric carving needle system |
| CN112048946A (en) * | 2020-08-21 | 2020-12-08 | 江苏麒浩精密机械股份有限公司 | Noise reduction vibration isolator for subway |
| CN112833252A (en) * | 2020-12-31 | 2021-05-25 | 武汉船舶设计研究院有限公司 | Large-load, low-frequency and high-damping pipeline supporting vibration isolation device |
-
2004
- 2004-12-24 CN CN 200420114714 patent/CN2752538Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102282066A (en) * | 2009-02-18 | 2011-12-14 | Zf腓德烈斯哈芬股份公司 | Connecting piece that can be inserted into a boat's hull |
| CN103352957A (en) * | 2013-07-11 | 2013-10-16 | 中国船舶重工集团公司第七○二研究所 | Vertical-type plate rack vibration isolation base |
| CN104989761A (en) * | 2015-07-09 | 2015-10-21 | 中国能建集团装备有限公司北京技术中心 | Elastic support structure |
| CN108150603A (en) * | 2017-08-17 | 2018-06-12 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of inertial navigation equipment damper |
| CN110594330A (en) * | 2019-07-19 | 2019-12-20 | 中国船舶重工集团公司第七一九研究所 | Frequency conversion isolator |
| CN110667232A (en) * | 2019-09-18 | 2020-01-10 | 固高科技(深圳)有限公司 | Electric carving needle assembly and electric carving needle system |
| CN112048946A (en) * | 2020-08-21 | 2020-12-08 | 江苏麒浩精密机械股份有限公司 | Noise reduction vibration isolator for subway |
| CN112048946B (en) * | 2020-08-21 | 2022-02-11 | 江苏麒浩精密机械股份有限公司 | Noise reduction vibration isolator for subway |
| CN112833252A (en) * | 2020-12-31 | 2021-05-25 | 武汉船舶设计研究院有限公司 | Large-load, low-frequency and high-damping pipeline supporting vibration isolation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060118 Termination date: 20131224 |