CN103397666A - Rubber support for vibration isolation or vibration reduction - Google Patents
Rubber support for vibration isolation or vibration reduction Download PDFInfo
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- CN103397666A CN103397666A CN2013103524076A CN201310352407A CN103397666A CN 103397666 A CN103397666 A CN 103397666A CN 2013103524076 A CN2013103524076 A CN 2013103524076A CN 201310352407 A CN201310352407 A CN 201310352407A CN 103397666 A CN103397666 A CN 103397666A
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- neoprene bearing
- bearing
- neoprene
- rubber support
- vibration damping
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Abstract
The invention discloses a rubber support for vibration isolation or vibration reduction. The rubber support comprises rubber board layers and steel plate layers, the rubber board layers and the steel plate layers are overlaid in a staggered manner in sequence from the bottom up; the cross section areas of the rubber support which is formed by the rubber board layers and the steel plate layers decrease linearly at first and then increases linearly; the area of the top of the rubber support is equal to that of the bottom of the rubber support. According to the rubber support, the structure of the longitudinal section of the conventional rubber support is improved; the problems that when the conventional rubber support is deformed in horizontal direction, the tensile stress is overlarge, instability is liable to happen, and the vertical stiffness declines too quickly are solved.
Description
Technical field
The present invention relates to a kind of neoprene bearing, be specifically related to a kind of neoprene bearing for shock insulation or vibration damping.
Background technology
As shown in Figure 1, neoprene bearing, be circular regardless of its cross section at present, or rectangle, the shape of its longitudinal section is rectangle.This class square-section neoprene bearing is in horizontal large deformation process, and particularly horizontal distortion is greater than after 200%, can produce excessive, the easy unstability of tensile stress, the vertical rigidity problem such as too fast that descends.Therefore need to consider the particularly optimization of vertical sectional shape of bearing shape from the angle of pedestal configurations, make the neoprene bearing of identical material take full advantage of material property, better stability and stress performance can be arranged.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of neoprene bearing for shock insulation or vibration damping, solved existing neoprene bearing in the situation that occurred level distortion, excessive, the easy unstability of neoprene bearing tensile stress and the too fast problem of vertical rigidity decline.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of neoprene bearing for shock insulation or vibration damping, the rubber flaggy and the steel plate layer that comprise the stack that interlocks successively from bottom to top, the cross-sectional area of the staggered neoprene bearing that is formed by stacking of described rubber flaggy and steel plate layer first linearity from the bottom up reduces rear linear the increase, and the topside area of described neoprene bearing equals bottom area.
The top margin of described longitudinal section and base are for being parallel to each other; The middle separated time on the middle separated time of the top margin of described longitudinal section and base overlaps; Two sides of described longitudinal section are curve or the broken line of separated time symmetry in edge; Two figures up and down of described longitudinal section are along the bearing half symmetrical isosceles trapezoid in eminence line of demarcation.
The cross section of described neoprene bearing is circular, and the cross section of neoprene bearing is that circle is convenient to make.
Beneficial effect of the present invention: 1. under equal volume, neoprene bearing of the present invention can produce larger horizontal distortion; At first, because the Limiting Level displacement of neoprene bearing is directly proportional to effective pressure area, increase along with horizontal movement, the effective pressure area of neoprene bearing of the present invention is greater than rectangle vertical cross-section neoprene bearing, so the Limiting Level displacement of neoprene bearing of the present invention is greater than the neoprene bearing of the rectangle vertical cross-section under putting on an equal basis; Secondly, increased the area that the upper lower section of maximum stress occurs due to neoprene bearing of the present invention, reduced the maximum tension stress of bearing, so, when producing identical tensile stress, the horizontal shear distortion of neoprene bearing of the present invention is larger, therefore the Limiting Level displacement of neoprene bearing of the present invention is greater than the neoprene bearing of the rectangle vertical cross-section under putting on an equal basis;
2. the stress of neoprene bearing of the present invention is lower, safety is higher; By mechanics of materials knowledge as can be known, reduce circular cross-section stress the most intuitively method be the increasing section diameter, increase the area that produces the upper lower section of tensile stress due to neoprene bearing of the present invention, made neoprene bearing of the present invention edge maximum stress be less than the neoprene bearing of equal volume square-section;
3. in the generating horizontal displacement process, the vertical rigidity of neoprene bearing of the present invention is larger, safety is higher; Vertical rigidity is directly proportional to effective pressure area, though the initial effective pressure area of neoprene bearing of the present invention is less than the rectangle vertical cross-section neoprene bearing of equal volume, but the increase along with horizontal movement, the effective pressure area of neoprene bearing of the present invention is greater than the rectangle vertical cross-section neoprene bearing of equal volume, therefore the vertical rigidity of neoprene bearing of the present invention is larger, safety is higher;
4. the stability of neoprene bearing of the present invention is higher; Known by the mechanics of materials, the buckling stress of depression bar is directly proportional to the effective pressure area of compression member, increase along with horizontal movement, the effective pressure area of neoprene bearing of the present invention is greater than rectangle vertical cross-section neoprene bearing, and in the generating horizontal displacement process, the amplitude that reduces of its horizontal rigidity of neoprene bearing of the present invention is less than the neoprene bearing of rectangle vertical cross-section, so the neoprene bearing of existing rectangle vertical cross-section more is introduced into flexion than neoprene bearing of the present invention, therefore the stability of neoprene bearing of the present invention is higher;
Neoprene bearing of the present invention level during to large deformation vertical rigidity descend less; Feature due to vertical sectional shape, this bearing at occurred level to when distortion, the overlapping area of upper and lower end face, substantially remain unchanged in the starting stage, the overlapping region area starts to descend after reaching certain distortion, compare with common bearing, the fall of overlapping region area obviously reduces, and the speed that the vertical rigidity that causes thus descends is also little than common bearing.
Description of drawings
Fig. 1 is the longitudinal section of neoprene bearing in prior art.
Fig. 2 is the longitudinal section of optimal case of the present invention.
Effective pressure area comparison diagram when Fig. 3 is bearing of the present invention and common bearing horizontal distortion.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 2: a kind of neoprene bearing for shock insulation or vibration damping, the rubber flaggy 1 and the steel plate layer 2 that comprise the stack that interlocks successively from bottom to top, that is to say, neoprene bearing comprises polylith rubber layer 1 and plurality of steel plates layer 2, a rubber layer 1 can first be set, then connect a block plate layer 2 above rubber layer 1, then connect second rubber layer 1 above steel plate layer 2, connect subsequently the second block plate layer 2 above second rubber layer 1, alternately arrange rubber layer 1 and plurality of steel plates layer 2 with this, the lowermost end of same neoprene bearing can be also steel plate layer 2.The cross-sectional area of described rubber flaggy 1 and the steel plate layer 2 staggered neoprene bearing that is formed by stacking first linearity from the bottom up reduces rear linear the increase, the topside area of described neoprene bearing equals bottom area, top margin and the base of the longitudinal section of described neoprene bearing are parallel to each other, the middle separated time on the middle separated time of the top margin of described longitudinal section and base overlaps, two sides of described longitudinal section are curve or the broken line of separated time symmetry in edge, and two figures up and down of described longitudinal section are along the bearing half symmetrical isosceles trapezoid in eminence line of demarcation.
The cross section of described neoprene bearing is circular, and the cross section of neoprene bearing is that circle is convenient to make.
This structure rubber bearing,, because its cross sectional area reduces from bottom to top gradually, can solve in the horizontal distortion situation, the problem of the excessive and easy unstability of tensile stress.Further prove below by experimental data.
Experimental subjects is the neoprene bearing in the positive and negative superimposed cross section of the existing square-section neoprene bearing introduced in background technology and identical isosceles trapezoid up and down.The specification of square-section neoprene bearing is: diameter is 400mm, highly for 120mm.The specification of the neoprene bearing of optimal case of the present invention is: top diameter 430mm, middle level diameter 380mm, base diameter 430mm, height 120mm.
By finite element software ABAQUS, two subjects stress analysis and contrast have been carried out.During software simulation is analyzed, respectively two kinds of bearings applied perpendicular to abutment surface and act on the vertical stress of the 10MPa at bearing center, making rubber layer that the horizontal distortion of 300% gross thickness occurs in the process of constant vertical stress effect.
Can analyze according to the software simulation result, the maximum stress of neoprene bearing occurs in the top of horizontal distortion direction side and reverse bottom.When horizontal movement is 228mm (approximately 200% rubber thickness), the tensile stress of square-section neoprene bearing reaches 2.69MPa, and the tensile stress of neoprene bearing of the present invention is 1.94MPa, reduces on year-on-year basis 28%.The maximum stress value of neoprene bearing is less, more is conducive to the stability of neoprene bearing.
The cross section of neoprene bearing of the present invention and longitudinal section can be various shape, if meet cross-sectional area from the bottom up first linearity reduce rear linear increase and the topside area of neoprene bearing equals the bottom area condition.Effective pressure area comparison diagram when Fig. 3 is bearing of the present invention and common bearing horizontal distortion, though the initial effective pressure area of neoprene bearing of the present invention is less than the rectangle vertical cross-section neoprene bearing of equal volume, but along with the increase of horizontal movement, the effective pressure area of neoprene bearing of the present invention is greater than the rectangle vertical cross-section neoprene bearing of equal volume.
During use, neoprene bearing is placed between basis and superstructure usually.Can place neoprene bearing according to actual conditions.
Neoprene bearing of the present invention, the shape of the longitudinal section by changing neoprene bearing, improved the stress performance of neoprene bearing, improved deformability and the stability of neoprene bearing.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. neoprene bearing that is used for shock insulation or vibration damping, its spy just is: comprise from bottom to top rubber flaggy and the steel plate layer of staggered stack successively, the cross-sectional area of the staggered neoprene bearing that is formed by stacking of described rubber flaggy and steel plate layer first linearity from the bottom up reduces rear linear the increase, and the topside area of described neoprene bearing equals bottom area.
2. a kind of neoprene bearing for shock insulation or vibration damping according to claim 1, it is characterized in that: the top margin of described longitudinal section and base are for being parallel to each other.
3. a kind of neoprene bearing for shock insulation or vibration damping according to claim 2, is characterized in that: the middle separated time coincidence on the middle separated time of the top margin of described longitudinal section and base.
4. a kind of neoprene bearing for shock insulation or vibration damping according to claim 3 is characterized in that: two sides of described longitudinal section for along in curve or the broken line of separated time symmetry.
5. a kind of neoprene bearing for shock insulation or vibration damping according to claim 4 is characterized in that: two figures up and down of described longitudinal section are for along the bearing half symmetrical isosceles trapezoid in eminence line of demarcation.
6. a kind of neoprene bearing for shock insulation or vibration damping according to claim 5 is characterized in that: the cross section of described neoprene bearing is for circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103524076A CN103397666A (en) | 2013-08-13 | 2013-08-13 | Rubber support for vibration isolation or vibration reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103524076A CN103397666A (en) | 2013-08-13 | 2013-08-13 | Rubber support for vibration isolation or vibration reduction |
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| Publication Number | Publication Date |
|---|---|
| CN103397666A true CN103397666A (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103524076A Pending CN103397666A (en) | 2013-08-13 | 2013-08-13 | Rubber support for vibration isolation or vibration reduction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878839A (en) * | 2015-05-14 | 2015-09-02 | 广州大学 | Irregular shape shock insulation support having high bearing capacity |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1578750A (en) * | 1976-08-28 | 1980-11-12 | Dunlop Ltd | Springs |
| EP0545570A1 (en) * | 1991-11-15 | 1993-06-09 | Kajima Corporation | Vibration control devices for structures, using laminated rubber |
| JPH093920A (en) * | 1995-06-21 | 1997-01-07 | Isamu Oshiro | Base-isolation device |
| JP2004132527A (en) * | 2002-10-15 | 2004-04-30 | Ntn Corp | Slide base isolation |
| CN201785699U (en) * | 2010-09-25 | 2011-04-06 | 中交第一公路勘察设计研究院有限公司 | Novel high-damping shock-insulation rubber bearer |
| CN102797293A (en) * | 2012-08-14 | 2012-11-28 | 东南大学 | Rubber support for shock insulation or vibration reduction |
| CN202730552U (en) * | 2012-08-13 | 2013-02-13 | 浙江天铁实业股份有限公司 | Rectangular rubber spring vibration absorber |
-
2013
- 2013-08-13 CN CN2013103524076A patent/CN103397666A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1578750A (en) * | 1976-08-28 | 1980-11-12 | Dunlop Ltd | Springs |
| EP0545570A1 (en) * | 1991-11-15 | 1993-06-09 | Kajima Corporation | Vibration control devices for structures, using laminated rubber |
| JPH093920A (en) * | 1995-06-21 | 1997-01-07 | Isamu Oshiro | Base-isolation device |
| JP2004132527A (en) * | 2002-10-15 | 2004-04-30 | Ntn Corp | Slide base isolation |
| CN201785699U (en) * | 2010-09-25 | 2011-04-06 | 中交第一公路勘察设计研究院有限公司 | Novel high-damping shock-insulation rubber bearer |
| CN202730552U (en) * | 2012-08-13 | 2013-02-13 | 浙江天铁实业股份有限公司 | Rectangular rubber spring vibration absorber |
| CN102797293A (en) * | 2012-08-14 | 2012-11-28 | 东南大学 | Rubber support for shock insulation or vibration reduction |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878839A (en) * | 2015-05-14 | 2015-09-02 | 广州大学 | Irregular shape shock insulation support having high bearing capacity |
| CN104878839B (en) * | 2015-05-14 | 2017-10-27 | 广州大学 | The special-shaped shock isolating pedestal of high-bearing capacity |
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Application publication date: 20131120 |