CN201292579Y - Stiffness changing composite lead core rubber support shock isolator - Google Patents
Stiffness changing composite lead core rubber support shock isolator Download PDFInfo
- Publication number
- CN201292579Y CN201292579Y CNU2008201238676U CN200820123867U CN201292579Y CN 201292579 Y CN201292579 Y CN 201292579Y CN U2008201238676 U CNU2008201238676 U CN U2008201238676U CN 200820123867 U CN200820123867 U CN 200820123867U CN 201292579 Y CN201292579 Y CN 201292579Y
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- CN
- China
- Prior art keywords
- rubber support
- core rubber
- lead core
- support base
- steel cylinder
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- Vibration Prevention Devices (AREA)
Abstract
The utility model relates to a rigidity-variable compound vibration isolator of a lead-core rubber support base, which can be used for the vibration isolating control of a construction structure. The rigidity-variable compound vibration isolator of a lead-core rubber support base comprises a lower connection board, a lower lead-core rubber support base, a middle connection board, an upper lead-core rubber support base, an upper connection board and a spacing steel cylinder, wherein the lower lead-core rubber support base and the upper lead-core rubber support base are connected in series by the middle connection board, the lower end of the lower lead-core rubber support base is fixedly connected with the lower connection board, the upper end of the upper lead-core rubber support base is fixedly connected with the upper connection board, the spacing steel cylinder is sleeved outside the upper lead-core rubber support base, the lower end of the spacing steel cylinder is fixedly connected with the middle connection board, and the spacing steel cylinder is used for limiting the oversize deformation of the upper lead-core rubber support base. After the deformation of the upper lead-core rubber support base is limited by the spacing steel cylinder, the deformation of the vibration isolator is born by the lower lead-core rubber support base to realize the rigidity variation.
Description
Technical field
The utility model relates to a kind of isolator, especially a kind of stiffness changing composite lead core rubber support shock isolator, and the shock insulation that can be applicable to engineering structures is controlled.
Background technology
Lead core rubber support shock isolator is a kind of device that is used to alleviate the amplitude of the superstructure vibration that causes owing to the foundation level motion.Conventional lead core rubber support shock isolator as depicted in figs. 1 and 2.Such lead core rubber support shock isolator comprises lower connecting plate, laminated rubber, lamination steel plate, lead for retractable pencil and upper junction plate.During use, superstructure is fixed in upper junction plate, and lower connecting plate is fixed on the basis.There are two shortcomings in conventional lead core rubber support shock isolator shown in Figure 1: (1) is not very high building for the number of plies, in order to guarantee that isolator has enough deformabilities need use bigger diameter and height, such isolator price is expensive, and bearing capacity then has more than needed; And if adopt the less isolator of size, the deformability under big shake is not enough again; (2) the smaller isolator of deformability does not have the safeguard measure at large deformation, and the isolator according to the frequently occurred earthquake design under the rarely occurred earthquake effect excessive distortion may take place, and causes the damage of isolator, and then the destruction of engineering structures is taken place.
Summary of the invention
The purpose of this utility model is at existing lead core rubber support shock isolator relatively poor to supporting capacity and deformability compliance; and the problem that does not have safeguard measure for large deformation; a kind of composite lead core rubber support shock isolator that becomes the rigidity function that has is proposed; this isolator can be coordinated the contradiction between supporting capacity and the deformability preferably under the building number of plies is not very high situation.
To achieve these goals, design scheme of the present utility model is as follows:
Stiffness changing composite lead core rubber support shock isolator includes lower connecting plate, following lead core rubber support, middle junction plate, goes up lead core rubber support, upper junction plate, spacing steel cylinder.Following lead core rubber support and last lead core rubber support are by middle junction plate series connection; The lower end and the lower connecting plate of following lead core rubber support are fixed, and the upper end and the upper junction plate of last lead core rubber support are fixed; The diameter of following lead core rubber support is greater than the diameter of last lead core rubber support, and the horizontal distortion rigidity of following lead core rubber support is greater than the horizontal distortion rigidity of last lead core rubber support; Spacing steel cylinder is enclosed within the lead core rubber support outside, and its lower end and middle junction plate are fixed, and the spacing steel cylinder outside flushes with middle junction plate outward flange, and the upper end-face edge of spacing steel cylinder has inside projection, and the bottom of projection flushes with the bottom of upper junction plate; Leave deformation space between described spacing steel cylinder and the upper junction plate.Spacing steel cylinder is used to limit lead core rubber support excessive distortion takes place.After the limited steel cylinder restriction of the distortion of last lead core rubber support, the distortion of isolator will be born by following lead core rubber support.
In the utility model two different lead core rubber supports of diameter vertically are being together in series, because the horizontal distortion rigidity of last lead core rubber support is less than the horizontal distortion rigidity of following lead core rubber support, thereby when less horizontal relative motion took place with respect to lower connecting plate upper junction plate, horizontal distortion mainly occurred in the lead core rubber support.When upper junction plate with after spacing steel cylinder contacts, the distortion of last lead core rubber support no longer increases.After this, the horizontal distortion between upper junction plate and the lower connecting plate will mainly be born by following lead core rubber support.So, when upper junction plate with after spacing steel cylinder contacts, the horizontal rigidity of stiffness changing composite lead core rubber support shock isolator will become greatly, thus the distortion that prevents isolator is excessive.
Description of drawings:
The conventional lead core rubber support shock isolator schematic diagram of Fig. 1.
The conventional lead core rubber support shock isolator a-a of Fig. 2 profile.
The stiffness changing composite lead core rubber support shock isolator schematic diagram that Fig. 3 the utility model proposes.
The stiffness changing composite lead core rubber support shock isolator b-b profile that Fig. 4 the utility model proposes.
The application form of Fig. 5 the utility model embodiment stiffness changing composite lead core rubber support shock isolator.
The limited preceding deformation state of lead core rubber support on Fig. 6.
The deformation state of lead core rubber support after limited on Fig. 7.
Among the figure: 1, lower connecting plate, 2, laminated rubber, 3, the lamination steel plate, 4, lead for retractable pencil post, 5, upper junction plate, 6, lower connecting plate, 7, following lead core rubber support, 8, middle junction plate, 9, go up lead core rubber support, 10, upper junction plate, 11, spacing steel cylinder, 12, building foundation, 13, the building superstructure, 14, the building surrounding soil.
The specific embodiment
Below in conjunction with embodiment the utility model is described further.
The shock insulation building structure schematic diagram for the employing stiffness changing composite lead core rubber support shock isolator as shown in Figure 5, wherein the isolator structure as shown in Figure 3.Stiffness changing composite lead core rubber support shock isolator is formed train by last lead core rubber support 9 and following lead core rubber support 7.The upper junction plate 10 of isolator is fixed with the bottom column suspension column of building superstructure 13, and lower connecting plate 6 is fixed with building foundation 12.Leave deformation space between isolator and the building surrounding soil 14.The working mechanism of Fig. 6,7 expression stiffness changing composite lead core rubber supports.The distortion that Figure 6 shows that isolator when small deformation takes place mainly concentrates on lead core rubber support 9 places; After Figure 7 shows that lead core rubber support 9 reaches predetermined maximum distortion, after promptly the inside projection of upper junction plate 10 and spacing steel cylinder 11 upper end-face edges contacts, distortion will be born by lead core rubber support 7 down.Because the horizontal distortion rigidity of following lead core rubber support 7 is greater than the horizontal distortion rigidity of last lead core rubber support 9, so when vibration takes place in ground, isolator can be isolated the transmission of a part of vibrational energy to superstructure, can prevent isolator generation excessive deformation again.
Claims (1)
1, a kind of stiffness changing composite lead core rubber support shock isolator includes down lead core rubber support (7) and last lead core rubber support (9), it is characterized in that: following lead core rubber support (7) and last lead core rubber support (9) are by middle junction plate (8) series connection; The lower end of following lead core rubber support (7) and lower connecting plate (6) are fixed, and the upper end of last lead core rubber support (9) and upper junction plate (10) are fixed; The diameter of following lead core rubber support (7) is greater than the diameter of last lead core rubber support (9), and the horizontal distortion rigidity of following lead core rubber support (7) is greater than the horizontal distortion rigidity of last lead core rubber support (9); Spacing steel cylinder (11) is enclosed within lead core rubber support (9) outside, spacing steel cylinder (11) lower end and middle junction plate (8) are fixed, spacing steel cylinder (11) outside flushes with the outward flange of middle junction plate (8), the upper end-face edge of spacing steel cylinder (11) has inside projection, and the bottom of projection flushes with the bottom of upper junction plate (10); Leave deformation space between described spacing steel cylinder (11) and the upper junction plate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201238676U CN201292579Y (en) | 2008-11-21 | 2008-11-21 | Stiffness changing composite lead core rubber support shock isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201238676U CN201292579Y (en) | 2008-11-21 | 2008-11-21 | Stiffness changing composite lead core rubber support shock isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201292579Y true CN201292579Y (en) | 2009-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201238676U Expired - Fee Related CN201292579Y (en) | 2008-11-21 | 2008-11-21 | Stiffness changing composite lead core rubber support shock isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201292579Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881090A (en) * | 2010-07-09 | 2010-11-10 | 中国建筑科学研究院 | Variable-rigidity shock insulation support |
| CN102619283A (en) * | 2012-04-17 | 2012-08-01 | 吕西林 | Lead core laminated rubber support seat capable of bearing tensile force |
-
2008
- 2008-11-21 CN CNU2008201238676U patent/CN201292579Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881090A (en) * | 2010-07-09 | 2010-11-10 | 中国建筑科学研究院 | Variable-rigidity shock insulation support |
| CN102619283A (en) * | 2012-04-17 | 2012-08-01 | 吕西林 | Lead core laminated rubber support seat capable of bearing tensile force |
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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: 20090819 Termination date: 20111121 |