CN202850207U

CN202850207U - Rubber supporting seat for shock isolation or vibration reduction

Info

Publication number: CN202850207U
Application number: CN 201220400937
Authority: CN
Inventors: 陆飞
Original assignee: Southeast University
Current assignee: Southeast University
Priority date: 2012-08-14
Filing date: 2012-08-14
Publication date: 2013-04-03
Anticipated expiration: 2022-08-14

Abstract

The utility model discloses a rubber supporting seat for shock isolation or vibration reduction, the rubber supporting seat for shock isolation or vibration reduction comprises a rubber layer and a steel board layer which are from down to up sequentially staggered stack, the cross-section area of the rubber supporting seat becomes gradually smaller from down to up, and the top surface area of the rubber supporting seat is smaller than the bottom surface area of the rubber supporting seat. The rubber supporting seat of the structure can solve the problem of over big tensile pressure of the rubber supporting seat and the problem of stability is easy to lose under the circumstance of occurring horizontal transformation.

Description

A kind of neoprene bearing for shock insulation or vibration damping

Technical field

The utility model relates to a kind of neoprene bearing, has, and relates to a kind of neoprene bearing for shock insulation or vibration damping.

Background technology

As shown in Figure 1, neoprene bearing is circular regardless of its cross section at present, or rectangle, the shape of its vertical cross-section is rectangle.This class square-section neoprene bearing is in horizontal large deformation process, and particularly horizontal distortion can produce the problems such as tensile stress is excessive, easy unstability greater than after 200%.Therefore, need to consider the particularly optimization of vertical cross-section shape of bearing shape from the angle of pedestal configurations, make the neoprene bearing of identical material that better stable row and stress performance can be arranged.

Summary of the invention

Technical problem:Technical problem to be solved in the utility model is, a kind of neoprene bearing for shock insulation or vibration damping is provided, and can solve in the situation of occurred level distortion the problem of the excessive and easy unstability of neoprene bearing tensile stress.

Technical scheme:For solving the problems of the technologies described above, the technical solution adopted in the utility model is:

A kind of neoprene bearing for shock insulation or vibration damping comprises from bottom to top successively rubber layer and the steel plate layer of staggered stack, and the cross sectional area of described neoprene bearing reduces from bottom to top gradually, and the top surface area of neoprene bearing is less than the base area of neoprene bearing.

Further, described neoprene bearing cross section is circle or rectangle.

Further, the vertical cross-section of described neoprene bearing is isosceles trapezoid,

Further, the top margin of the vertical cross-section of described neoprene bearing and base are the straight line that is parallel to each other, and the middle separated time on the middle separated time of top margin and base overlaps, and two sides of vertical cross-section are along the symmetrical curve of the middle separated time of top margin.

Beneficial effect:Compared with prior art, the utlity model has following beneficial effect:

1. under equal volume, neoprene bearing of the present utility model can produce larger horizontal distortion.Compare with existing rectangle vertical cross-section neoprene bearing, under equal volume, neoprene bearing of the present utility model, the ratio that reduces owing to the overlapping region area will be less than the bearing with the vertical square-section of equal-specification.

2. when par was out of shape, the stress of neoprene bearing of the present utility model was lower, safety is higher.Compare with existing square-section neoprene bearing, when par is out of shape, neoprene bearing of the present utility model, because of the variation of vertical stress ratio, like bearing edge maximum stress be less than the bearing of Down lamp square-section.

3. under par total deformation and identical stress condition, the height of neoprene bearing of the present utility model can reduce, thereby reduces the material usage of neoprene bearing, improves the stability of neoprene bearing.Compare with existing square-section neoprene bearing, under par distortion and identical stress condition, neoprene bearing of the present utility model is because the unit level displacement is larger, so can reduce highly.

4. in the situation stable, that horizontal total deformation is identical with stress condition, the diameter of neoprene bearing of the present utility model and height can reduce, thereby save the consumption of material, reduce construction costs.Compare with existing square-section neoprene bearing, in the situation stable, that horizontal distortion is identical with stress condition, neoprene bearing of the present utility model, to reduce ratio few because of the overlapping region area, the vertical stress ratio changes, so can reduce corresponding diameter and height, and realize identical stress and horizontal total deformation.

Description of drawings

Fig. 1 is the vertical cross-sectional of neoprene bearing in the prior art.

Fig. 2 is vertical cross-sectional of the present utility model.

Fig. 3 is in the stress test that provides among the utility model embodiment, the deformation result figure of trapezoid cross section neoprene bearing.

Have among the figure: rubber layer 1, steel plate layer 2.

The specific embodiment

Below in conjunction with accompanying drawing, the technical solution of the utility model is described in detail.

As shown in Figure 2, the neoprene bearing for shock insulation or vibration damping of the present utility model comprises from bottom to top successively rubber layer 1 and the steel plate layer 2 of staggered stack.That is to say, neoprene bearing comprises polylith rubber layer 1 and plurality of steel plates layer 2, a rubber layer 1 can be set first, then above rubber layer 1, connect a block plate layer 2, then above steel plate layer 2, connect second rubber layer 1, above second rubber layer 1, connect subsequently the second block plate layer 2, alternately arrange rubber layer 1 and plurality of steel plates layer 2 with this.Certainly, the lowermost end of neoprene bearing also can be steel plate layer 2.The top of neoprene bearing can be steel plate layer 2 or rubber layer 1.The cross sectional area of neoprene bearing reduces from bottom to top gradually, and the top surface area of neoprene bearing is less than the base area of neoprene bearing.

During use, neoprene bearing is placed between basis and the superstructure usually.Certainly, can place neoprene bearing according to actual conditions, neoprene bearing can just be put, namely end face up, the bottom surface down so that the end face of neoprene bearing contacts with superstructure; Also can instead put, namely end face down, the bottom surface up so that the bottom surface of neoprene bearing contacts with superstructure.

Neoprene bearing of the present utility model, the shape of the vertical cross-section by changing neoprene bearing has been improved the stress performance of neoprene bearing, has improved deformability and the stability of neoprene bearing.

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.

Experiment is to existing square-section neoprene bearing and the of the present utility model trapezoid cross section neoprene bearing of picture for introducing in the background technology.The specification of square-section neoprene bearing is: diameter is 300mm, highly for 110mm.The specification of trapezoid cross section neoprene bearing is: top diameter 250mm, following diameter 350mm, height 110mm.

By finite element software ABAQUS two subjects stress analysis and contrast have been carried out.Software simulation is rectangle and trapezoidal bearing to vertical cross-section respectively in analyzing, and has applied the vertical stress of 10MPa and the horizontal distortion of rubber layer gross thickness 200%.Be that trapezoidal bearing carries out the software simulation analysis as shown in Figure 3 to vertical cross-section.

Can analyze according to finite element software ABAQUS analog result, the maximum stress of neoprene bearing occurs in the top of horizontal distortion direction side and reverse bottom.Compare with the square-section neoprene bearing, the maximum stress of trapezoid cross section neoprene bearing is reduced to 24.64MPa, and the maximum stress of square-section neoprene bearing is 41.11MPa, reduces on year-on-year basis about 40%.The maximum stress value of trapezoid cross section neoprene bearing is less, more is conducive to the stability of neoprene bearing.

Further, the cross section of described neoprene bearing is circle or rectangle.The cross section of neoprene bearing is circle or rectangle, is convenient to make.

Further, the vertical cross-section of described neoprene bearing can be various shape, as long as satisfy the condition that reduces gradually from bottom to top.As the first preferred version, the vertical cross-section of neoprene bearing is isosceles trapezoid.As the second preferred version, the top margin of the vertical cross-section of neoprene bearing and base are the straight line that is parallel to each other, and the middle separated time on the middle separated time of top margin and base overlaps, and two sides of vertical cross-section are along the symmetrical curve of the middle separated time of top margin.

Claims

1. A rubber bearing used for shock isolation or vibration reduction, comprising rubber layers (1) and steel plate layers (2) stacked sequentially from bottom to top, characterized in that the cross-sectional area of the rubber bearing is Decrease gradually from bottom to top, the top surface area of the rubber bearing is smaller than the bottom surface area of the rubber bearing.

2. The rubber bearing for shock isolation or vibration reduction according to claim 1, wherein the cross section of the rubber bearing is circular or rectangular.

3. The rubber bearing for shock isolation or vibration reduction according to claim 1 or 2, wherein the vertical section of the rubber bearing is isosceles trapezoidal.

4. The rubber bearing used for shock isolation or vibration reduction according to claim 1, wherein the top edge and the bottom edge of the vertical section of the rubber bearing are straight lines parallel to each other, and the top edge The middle line coincides with the middle line of the bottom edge, and the two sides of the vertical section are mutually symmetrical curves along the middle line of the top edge.