CN102996705A - Combined vibration isolation base with hollow webs - Google Patents
Combined vibration isolation base with hollow webs Download PDFInfo
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- CN102996705A CN102996705A CN2012104965137A CN201210496513A CN102996705A CN 102996705 A CN102996705 A CN 102996705A CN 2012104965137 A CN2012104965137 A CN 2012104965137A CN 201210496513 A CN201210496513 A CN 201210496513A CN 102996705 A CN102996705 A CN 102996705A
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- double
- plate
- hollow slab
- hollow
- vibro
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- 238000002955 isolation Methods 0.000 title abstract description 13
- 239000006096 absorbing agent Substances 0.000 claims abstract description 22
- 230000000737 periodic effect Effects 0.000 claims abstract description 18
- 229910000639 Spring steel Inorganic materials 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 238000013016 damping Methods 0.000 claims description 17
- 210000003205 muscle Anatomy 0.000 claims description 12
- 210000002784 stomach Anatomy 0.000 claims description 11
- 241000446313 Lamella Species 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 230000002349 favourable effect Effects 0.000 abstract 2
- 238000003466 welding Methods 0.000 abstract 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical group C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 25
- 230000005540 biological transmission Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Abstract
The invention provides a combined vibration isolation base with hollow webs. The combined vibration isolation base comprises two double-layer periodic hollow webs, a curved beam spring and a dynamic isolation absorber, wherein each double-layer periodic hollow web is formed by cutting periodically distributed small iron blocks by square steel wire cutting, the curved beam spring is formed by welding two same spring plates back to back, and the dynamic vibration absorber is formed by welding steel blocks and spring steel; the two double-layer periodic hollow webs are connected by the curved beam spring, wherein the connection position is in a place where ribs of the hollow webs are arranged; and the dynamic isolation absorber is arranged at the lower part of the upper double-layer periodic hollow web. The combined vibration isolation base ensures that a ship base structure achieves favorable vibration isolation effects at a low frequency band and a high frequency band while supporting power equipment, is favorable in economy and wide in application prospect, and is suitable for being used as a base structure of various ships.
Description
Technical field
What the present invention relates to is a kind of power equipment mounting base, specifically a kind of equipment mounting base that can reduce ship power mechanical vibration and noise.
Background technique
The vibration of ship power equipment is one of main vibration source that causes ship hull vibration, base systems is installed on the device between buoyant raft and the naval vessel just, when hull waves, can guarantee the stable of machinery equipment, the power that produces during simultaneously with the weight of machinery equipment and running thereof passes to hull structure.It is the important structure that guarantees various mechanical device normal operations, whether reliable navigation and the fight capability that can directly have influence on the naval vessel of pedestal structure.Traditional base systems is comprised of the longitudinal framework, the grillage that are welded on the naval vessel, and it more just plays the effect of support apparatus, and equipment is delivered to the vibration isolation effect on naval vessel and not obvious.
Fig. 1 has provided a kind of typical naval vessel pedestal structure, and its composition comprises pedestal transverse panel, the vertical panel of pedestal and pedestal bracket, and this structure can only play the effect that supporting motive force equipment is installed, and does not almost have the effect of vibration and noise reducing.
The theory of bump leveller technology and experimental research are very perfect, and have been widely used in improving in the Practical Project low frequency shock attenuation result of vibrating isolation system.In recent years, the domestic beginning is studied the characteristic of periodic structure in the dither band gap, finds can not propagate at the band gap frequency range internal vibration ripple of periodic structure.If utilize low frequency shock attenuation result and the periodic structure dither band gap properties of dynamic vibration absorber, design a kind of pedestal structure, make pedestal structure in the supporting power equipment, possess good low frequency and dither isolation effect, this is of great significance for the sound Stealth Fighter tool that improves the naval vessel.
Summary of the invention
The present invention is directed to the technical problem that exists in the above-mentioned prior art, a kind of combined hollow plate vibro-damping mount is provided, be used for ship power equipment, be delivered to the vibration on naval vessel with isolation driven force equipment in low frequency and high-frequency range.
The objective of the invention is to be achieved through the following technical solutions:
A kind of combined hollow plate vibro-damping mount, mainly formed by double-deck cycle hollow slab, curved beam spring and dynamic vibration absorber, wherein, double-deck cycle hollow slab forms integrative-structure on an empty stomach by the little iron block of square steel line cutting excision period profile, and the curved beam spring is by two opposing being welded of identical spring sheet; Dynamic vibration absorber is welded in spring steel by two identical blooms and forms; Two double-deck cycle hollow slabs are welded to connect by the curved beam spring, and dynamic vibration absorber is welded on the double-deck cycle hollow slab.
Described double-deck cycle hollow slab is the integrated cancelled structure that thin plate and plate muscle periodic arrangement form.
Described curved beam spring is welded on the plate muscle place of double-deck cycle hollow slab, and the number of curved beam spring equates with the empty stomach number of double-deck cycle hollow slab.
On the 3rd layer of thin plate of double-deck cycle hollow slab, the position was middle part on an empty stomach above described dynamic vibration absorber was installed in, and the number of dynamic vibration absorber equates with the empty stomach number of double-deck cycle hollow slab.
Described double-deck cycle hollow slab is identical with the curved beam width of the spring, and the width of dynamic vibration absorber should guarantee that enough gaps are arranged between bloom and the hollow slab.
Plate muscle and gauge of sheet be than greater than 3 in the described double-deck cycle hollow slab, and the ratio of double-deck hollow slab cycle in cycle length on an empty stomach and lamella thickness is greater than 20, and the individual layer height of double-deck cycle hollow slab is about 10 times of lamella thickness.
The ratio of the thickness of described curved beam spring and gauge of sheet is between 1/3-1/2.
Spring steel plate thickness in the described dynamic vibration absorber depends on the absorbing frequency, and its length is stretched out 50% of double-deck cycle hollow slab width.
Bloom in the described dynamic vibration absorber is installed in the part that spring steel plate stretches out hollow slab, and the quality of bloom is not less than 20% of hollow slab quality.
The working principle of combined hollow plate vibro-damping mount disclosed in this invention is: the dynamic vibration absorber of period profile forms the local resonance structure, forbid vibrating driven force equipment and be delivered on the section of cabin in the local LOCALLY RESONANT ELASTIC WAVE scope of this structure, the local LOCALLY RESONANT ELASTIC WAVE can appear at low-frequency range; Double-deck cycle Hollow Slab Structure has Prague band gap properties, and bandgap range internal vibration ripple can not be propagated in hollow slab in Prague, and Prague band gap generally appears at high band; Under the prerequisite of Prague band gap, two kinds of band gap are independent of each other in the local LOCALLY RESONANT ELASTIC WAVE, thereby make the naval vessel pedestal all obtain remarkable effectiveness in vibration suppression at low frequency and high frequency.
The local LOCALLY RESONANT ELASTIC WAVE of combined hollow plate vibro-damping mount structure of the present invention is in the 50-200Hz frequency range, and Prague band gap is in 400-1500Hz and 1800-3000Hz frequency range.With respect to existing naval vessel pedestal structure, the present invention has the following advantages:
1, there is Prague band gap of wide-band in the double-deck cycle hollow slab of uniqueness of the present invention, and the transverse vibration of hollow slab transmission attenuation amplitude can be up to 80dB in band gap.
2, associating absorbing technology of the present invention and periodic structure Prague band gap mechanism have realized that low-frequency range and high band are effectively isolated, the transmission of attenuating structure noise.
3, the present invention can reduce hull structure 10-3000Hz frequency range vibration acceleration level more than 5dB, and has good low frequency shock attenuation result.
4, combined hollow plate vibro-damping mount of the present invention extends in the pedestal structure design of each type ship through strength check, has good actual application value.
Description of drawings
Fig. 1 (1) is typical naval vessel pedestal structure schematic representation in the prior art;
Fig. 1 (2) is the side view of Fig. 1 (1);
Fig. 2 (1) is the structural representation of combined hollow plate vibro-damping mount of the present invention;
Fig. 2 (2) is the side view of Fig. 2 (1);
Fig. 3 is the structural representation of double-deck cycle hollow slab;
Fig. 4 is the structural representation of curved beam spring;
Fig. 5 is the structural representation of beam type bump leveller;
Fig. 6 is the structural representation of arc connecting plate;
Fig. 7 is naval vessel combined hollow plate pedestal and hull structure connection diagram.
Embodiment
The below elaborates to embodiments of the invention, and present embodiment is implemented under take technical solution of the present invention as prerequisite, provided detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Fig. 1 (1) and Fig. 1 (2) have provided a kind of typical naval vessel pedestal structure, and its composition comprises pedestal transverse panel 1, the vertical panel 2 of pedestal and pedestal bracket 3, and this structure can only play the effect that supporting motive force equipment is installed, and almost do not have the effect of vibration and noise reducing.
Fig. 2 (1) and Fig. 2 (2) have provided a kind of novel combination type hollow slab vibro-damping mount structure disclosed in this invention, and it is welded by double-deck cycle hollow slab 4, curved beam spring 5, beam type dynamic vibration absorber 6 and arc connecting plate 7.Double-deck cycle hollow slab 4 is formed by a whole square steel line cutting, forms the integrative-structure that is formed by thin plate 8 and plate muscle 9 periodic arrangement, as shown in Figure 3.Curved beam spring 5 is installed in plate muscle 9 places of double-deck cycle hollow slab 4 each periodic unit, and by two opposing being welded of identical curved beam, curved beam is formed by die casting after Overheating Treatment by spring steel, as shown in Figure 4.Beam type dynamic vibration absorber 6 is installed in the middle of the thin plate 8 of double-deck cycle hollow slab 4 each periodic unit, and the bloom 11 identical with two by spring sheet 10 is welded, and the material of spring sheet is the Mn65 spring steel, as shown in Figure 5.Arc connecting plate 7 is installed on the combined hollow plate pedestal every two or above periodic unit, the mounting point is plate muscle 9 places of double-deck cycle hollow slab 4, its structure is used for connecting pedestal and naval vessel hull as shown in Figure 6, plate muscle 9 consistency of thickness in its thickness and the double-deck cycle hollow slab 4.
When the present invention makes the naval vessel pedestal structure be used for supporting power equipment, possess the effect that vibration wave that good xegregating unit transmission gets off is propagated, have good Economy and wide application prospect.
Combined hollow plate vibro-damping mount structural type is applied in the vibration and noise reducing of boats and ships, should start with from the transmission way of ship hull vibration, finds the leading transmission channels in the complex incentive bottom base, the leading component that transmits.Under the requirement of satisfying pedestal intensity, provide the structural parameter of combined hollow plate pedestal, take into account simultaneously equipment general arrangement and mounting process requirement.Specific implementation method is as follows:
1, according to the frequency of okperation of power equipment, determine the quality of beam type bump leveller bloom and the thickness of spring sheet, suppress the low-frequency vibration that driven force equipment is delivered to the naval vessel.Bump leveller is installed in the middle of the thin plate of each periodic unit of hollow slab.
2, regulate the periodic unit length of double-deck cycle hollow slab, change the vibration band gap frequency range of hollow slab, to satisfy the needed high-frequency vibration isolation condition of ship power equipment vibrating isolation system.
3, the requirement of rigidity is installed according to ship power equipment, determines the thickness of curved beam spring.The curved beam spring fitting is at the plate muscle place of each periodic unit of hollow slab.
4, the arc connecting plate is installed on the combined hollow plate pedestal every two or above periodic unit, and the mounting point is the plate muscle place of hollow slab.
5, naval vessel combined hollow plate pedestal is connected on the naval vessel pneumatic shell by the arc connecting plate, and power equipment is connected with pedestal by vibration damper, as shown in Figure 7.12 is power equipment among Fig. 7, and 13 is vibration damper, and 14 is that combined hollow plate pedestal structure, 15 is that arc connecting plate, 16 is the naval vessel pneumatic shell.
Claims (8)
1. a combined hollow plate vibro-damping mount is characterized in that, mainly is comprised of double-deck cycle hollow slab, curved beam spring and dynamic vibration absorber; Wherein, double-deck cycle hollow slab is square steel forms empty stomach by the little iron block of line cutting excision period profile integral structure, the curved beam spring is by two opposing being welded of identical spring sheet, and dynamic vibration absorber is welded in spring steel plate by two identical blooms and forms; Connect by the curved beam spring between two double-deck cycle hollow slabs; Dynamic vibration absorber is welded on the empty stomach place of double-deck cycle hollow slab.
2. combined hollow plate vibro-damping mount according to claim 1 is characterized in that, described double-deck cycle hollow slab is the integrated cancelled structure that thin plate and plate muscle periodic arrangement form.
3. combined hollow plate vibro-damping mount according to claim 2 is characterized in that, described curved beam spring is welded on the plate muscle place of double-deck cycle hollow slab, and the number of curved beam spring equates with the empty stomach number of double-deck cycle hollow slab.
4. combined hollow plate vibro-damping mount according to claim 2, it is characterized in that, on the 3rd layer of thin plate of double-deck cycle hollow slab, the position was middle part on an empty stomach above described dynamic vibration absorber was installed in, and the number of dynamic vibration absorber equates with the empty stomach number of double-deck cycle hollow slab.
5. combined hollow plate vibro-damping mount according to claim 2, it is characterized in that, the plate muscle compares greater than 3 with gauge of sheet in the described double-deck cycle hollow slab, length on an empty stomach of double-deck hollow slab cycle in cycle and the ratio of lamella thickness are greater than 20, and the individual layer height of double-deck cycle hollow slab is about 10 times of lamella thickness.
6. combined hollow plate vibro-damping mount according to claim 2 is characterized in that, the ratio of the thickness of described curved beam spring and gauge of sheet is between 1/3-1/2.
7. combined hollow plate vibro-damping mount according to claim 1 is characterized in that, the spring steel plate thickness in the described dynamic vibration absorber depends on the absorbing frequency, and its length is stretched out 50% of double-deck cycle hollow slab width.
8. according to claim 1 or 7 described combined hollow plate vibro-damping mounts, it is characterized in that the bloom in the described dynamic vibration absorber is installed in the part that spring steel plate stretches out hollow slab, the quality of bloom is not less than 20% of hollow slab quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210496513.7A CN102996705B (en) | 2012-11-28 | 2012-11-28 | Combined vibration isolation base with hollow webs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210496513.7A CN102996705B (en) | 2012-11-28 | 2012-11-28 | Combined vibration isolation base with hollow webs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102996705A true CN102996705A (en) | 2013-03-27 |
| CN102996705B CN102996705B (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210496513.7A Expired - Fee Related CN102996705B (en) | 2012-11-28 | 2012-11-28 | Combined vibration isolation base with hollow webs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102996705B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350738A (en) * | 2013-07-11 | 2013-10-16 | 中国船舶重工集团公司第七○二研究所 | Shearing installation base with high impedance |
| CN104633372A (en) * | 2015-01-14 | 2015-05-20 | 中国人民解放军国防科学技术大学 | Pipeline system flow noise suppression device and method broadening acoustic band gaps |
| CN110715008A (en) * | 2019-10-16 | 2020-01-21 | 中国人民解放军国防科技大学 | Local resonance superstructure isolator |
Citations (5)
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|---|---|---|---|---|
| CN1032578A (en) * | 1987-07-17 | 1989-04-26 | 法玛通公司 | Part in the equipment is carried out the antidetonation bar that the wedging device of antidetonation wedging, the particularly pipe of wedging steam generator are used |
| US5860637A (en) * | 1996-12-24 | 1999-01-19 | Caterpillar Inc. | Energy absorbing assembly |
| CN1946952A (en) * | 2004-04-21 | 2007-04-11 | 株式会社神户制钢所 | Vibration reducing and connecting structure |
| CN101623744A (en) * | 2008-07-08 | 2010-01-13 | 张雷 | Large-sized hammering block shock absorber and installation method thereof |
| JP2010285850A (en) * | 2009-06-15 | 2010-12-24 | Toko Go | Frame structure with deformation part for vibration reduction, and vibration reducing device used for frame structure |
-
2012
- 2012-11-28 CN CN201210496513.7A patent/CN102996705B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032578A (en) * | 1987-07-17 | 1989-04-26 | 法玛通公司 | Part in the equipment is carried out the antidetonation bar that the wedging device of antidetonation wedging, the particularly pipe of wedging steam generator are used |
| US5860637A (en) * | 1996-12-24 | 1999-01-19 | Caterpillar Inc. | Energy absorbing assembly |
| CN1946952A (en) * | 2004-04-21 | 2007-04-11 | 株式会社神户制钢所 | Vibration reducing and connecting structure |
| CN101623744A (en) * | 2008-07-08 | 2010-01-13 | 张雷 | Large-sized hammering block shock absorber and installation method thereof |
| JP2010285850A (en) * | 2009-06-15 | 2010-12-24 | Toko Go | Frame structure with deformation part for vibration reduction, and vibration reducing device used for frame structure |
Non-Patent Citations (2)
| Title |
|---|
| 姜岚等: "钢-混凝土协同式组合空腹夹层板楼盖舒适度分析", 《贵州大学学报（自然科学版）》 * |
| 武兰河等: "圆弧曲梁面内自由振动的微分容积解法", 《振动与冲击》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350738A (en) * | 2013-07-11 | 2013-10-16 | 中国船舶重工集团公司第七○二研究所 | Shearing installation base with high impedance |
| CN103350738B (en) * | 2013-07-11 | 2015-11-18 | 中国船舶重工集团公司第七○二研究所 | A kind of shearing mounting base with high resistance |
| CN104633372A (en) * | 2015-01-14 | 2015-05-20 | 中国人民解放军国防科学技术大学 | Pipeline system flow noise suppression device and method broadening acoustic band gaps |
| CN104633372B (en) * | 2015-01-14 | 2017-02-01 | 中国人民解放军国防科学技术大学 | Pipeline system flow noise suppression device and method broadening acoustic band gaps |
| CN110715008A (en) * | 2019-10-16 | 2020-01-21 | 中国人民解放军国防科技大学 | Local resonance superstructure isolator |
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| Publication number | Publication date |
|---|---|
| CN102996705B (en) | 2014-11-19 |
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Granted publication date: 20141119 |