Polyurethane elastomer composite rubber shock insulation support

Abstract

The utility model discloses a polyurethane elastomer composite rubber shock insulation support, which relates to the field of building and bridge shock absorption equipment and comprises a rubber shock insulation support body, at least one through hole for arranging a polyurethane elastomer is arranged in the rubber shock insulation support body, and the polyurethane elastomer is arranged in the through hole. According to the lead core rubber shock insulation support, NDI type, TDI type or MDI type polyurethane elastomers and other polyurethane elastomers are adopted to manufacture the core material to replace a lead core in a traditional lead core rubber shock insulation support, and the problems that an existing lead core rubber shock insulation support is high in cost and has heavy metal pollution hidden dangers can be effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to building, bridge damping equipment field especially, relate to a polyurethane elastomer composite type rubber shock insulation support. BACKGROUND

[0002] Earthquake is a kind of sudden, devastating natural disasters, the continuous occurrence of earthquake disasters, cause a large number of casualties and the destruction or collapse of buildings, bridges and other buildings, pose a serious threat to human society and lead to serious economic losses, and the application of shock insulation technology can effectively solve the above problems.

[0003] The commonly used shock insulation equipment includes rubber shock insulation support, and its principle is to effectively avoid the active period of earthquake by the shear deformation of support, simultaneously absorbs part of seismic energy, to ensure the overall safety of building, bridge structure. Rubber shock insulation support can reduce or even prevent the damage of structural members, avoid the secondary disaster caused by the damage of building interior decoration and indoor equipment, ensure the normal use function of building in earthquake, and has important significance for important buildings such as hospital, school, kindergarten, control center, museum and computing center.

[0004] At present, the widely used rubber shock insulation support is lead core rubber shock insulation support, which is a kind of shock insulation support with cylindrical lead core arranged in ordinary laminated rubber support to improve the damping performance of rubber support. The lead core will occur plastic deformation when the support is sheared, and the lead core absorbs part of seismic energy by relying on its plastic deformation, and at the same time, the lead core restores the mechanical properties of shock insulation support by relying on its recrystallization ability at room temperature.

[0005] The lead core material used in the existing lead core rubber shock insulation support is pure lead with lead content not less than 99.99%, and the cost is high. And lead is a kind of toxic heavy metal, which is harmful to multiple organ systems of human body, and long-term exposure to lead may cause health problems, so lead core faces the problem of lead core exposure or leakage both in production process and in the application process of rubber shock insulation support.

[0006] Therefore, how to provide a low-cost and high-safety rubber shock insulation support to solve the problems of high cost and heavy metal pollution of the existing lead core rubber shock insulation support has become a difficult problem to be solved by the technical personnel in the field. INVENTION CONTENTS

[0007] The utility model aims at providing a polyurethane elastomer composite type rubber shock insulation support, solving the problems of high cost and heavy metal pollution of the existing lead core rubber shock insulation support.

[0008] To solve the above technical problems, the utility model adopts the following technical scheme:

[0009] The utility model provides a kind of polyurethane elastomer composite type rubber shock insulation support, including rubber shock insulation support body, at least one through hole for setting polyurethane elastomer is provided in the rubber shock insulation support body, and the polyurethane elastomer is arranged in the through hole.

[0010] Optionally, the rubber shock insulation support body includes a rubber shock insulation member, the top and bottom of the rubber shock insulation member are respectively connected with an upper connecting plate and a lower connecting plate, and the upper connecting plate is parallel to the lower connecting plate; the through hole penetrates the upper connecting plate, the rubber shock insulation member and the lower connecting plate in sequence; a rubber protective layer is connected to the sidewall of the rubber shock insulation member.

[0011] Optionally, the rubber shock insulation member includes an inner rubber layer and a stiffened steel plate, the inner rubber layer and the stiffened steel plate are both provided with a plurality of layers, and the inner rubber layer and the stiffened steel plate are arranged in sequence and cross-laminated; the stiffened steel plate is parallel to the upper connecting plate.

[0012] Optionally, recesses are provided on the outer sides of the upper connecting plate and the lower connecting plate, the positions of the recesses correspond to the positions of the through holes, cover plates for protecting the polyurethane elastomer are installed in the recesses, and the thickness of the cover plates corresponds to the opening depth of the recesses.

[0013] Optionally, the polyurethane elastomer includes NDI type polyurethane elastomer, TDI type polyurethane elastomer and MDI type polyurethane elastomer.

[0014] Compared with the prior art, the utility model has the beneficial technical effects that:

[0015] The utility model uses NDI type, TDI type or MDI type polyurethane elastomer to replace the lead core in the traditional lead core rubber shock insulation support, which can effectively solve the problems of high cost and heavy metal pollution of the existing lead core rubber shock insulation support.

[0016] The elastic modulus range of the polyurethane elastomer is wider than that of the lead core, and the person skilled in the art can select a suitable type of polyurethane elastomer according to specific requirements and adjust the formula of the polyurethane elastomer to have a suitable elastic modulus, so as to better meet the deformation requirements of the rubber shock insulation support and improve the flexibility of the rubber shock insulation support when facing complex load conditions.

[0017] The polyurethane elastomer has good damping performance and can effectively absorb and dissipate seismic energy to reduce the vibration amplitude of the building or bridge structure. In contrast, the lead core mainly dissipates energy through shear deformation in the rubber support, and the internal molecular chain friction mechanism of the polyurethane elastomer can also increase energy dissipation in addition to shear deformation.

[0018] The chemical structure of the polyurethane elastomer has good aging resistance, can resist ultraviolet radiation, ozone corrosion and chemical corrosion, can improve the aging resistance of the rubber shock insulation support as a whole to some extent, and prolong the service life of the rubber shock insulation support. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be further described in connection with the drawings.

[0020] Fig. 1 It is a structure schematic view of the polyurethane elastomer composite rubber shock insulation support of the utility model.

[0021] Fig. 2 It is a top view of the polyurethane elastomer composite rubber shock insulation support of the utility model.

[0022] The reference signs are explained as follows: 1, rubber shock insulation support body; 2, polyurethane elastomer; 3, cover plate; 11, through hole; 12, rubber shock insulation part; 13, upper connecting plate; 14, lower connecting plate; 15, rubber protective layer; 121, inner rubber layer; 122, stiffened steel plate. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical schemes and beneficial effects of the utility model clearer and more apparent, the utility model will be further described in detail in connection with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and do not limit the utility model.

[0024] As shown in the drawings, Figs. 1-2 A polyurethane elastomer composite rubber shock insulation support comprises a rubber shock insulation support body 1, at least one through hole 11 for setting a polyurethane elastomer 2 is arranged in the rubber shock insulation support body 1, and the polyurethane elastomer 2 is arranged in the through hole 11.

[0025] The shape of the through hole 11 comprises a round hole, a square hole, a triangular hole or other shapes, and liquid polyurethane elastomer raw materials are poured into the through hole 11 and wait for solidification into solid polyurethane elastomers 2.

[0026] The number, position and size of the through hole 11 can be set according to actual needs.

[0027] The vertical cross section of the rubber shock insulation support body 1 is rectangular, and the horizontal cross section is circular.

[0028] Specifically, the rubber shock insulation support body 1 comprises a rubber shock insulation piece 12, the top and bottom of the rubber shock insulation piece 12 are connected with an upper connecting plate 13 and a lower connecting plate 14 respectively, the upper connecting plate 13 is parallel to the lower connecting plate 14; the through hole 11 penetrates the upper connecting plate 13, the rubber shock insulation piece 12 and the lower connecting plate 14 in sequence; a rubber protective layer 15 is connected to the side wall of the rubber shock insulation piece 12.

[0029] The upper connecting plate 13 and the lower connecting plate 14 are connected with the rubber shock insulation piece 12 through vulcanization.

[0030] Specifically, the rubber shock insulation piece 12 comprises an internal rubber layer 121 and a stiffened steel plate 122, the internal rubber layer 121 and the stiffened steel plate 122 are provided with a plurality of layers and are arranged in sequence, and the stiffened steel plate 122 is parallel to the upper connecting plate 13.

[0031] Specifically, the outer side of the upper connecting plate 13 and the lower connecting plate 14 is provided with a groove, the position of the groove corresponds to the position of the through hole 11, a cover plate 3 for protecting the polyurethane elastomer 2 is installed in the groove, and the thickness of the cover plate 3 corresponds to the opening depth of the groove.

[0032] Before pouring the polyurethane elastomer 2, the cover plate 3 on the lower connecting plate 14 is installed first, and then the cover plate 3 on the upper connecting plate 13 is installed after the polyurethane elastomer 2 is poured and formed.

[0033] In the traditional lead core rubber shock insulation support, the lead core needs to be manually hammered into the support body, while in the rubber shock insulation support of the present application, the polyurethane elastomer core only needs to be poured and formed, which can save manpower.

[0034] Specifically, the polyurethane elastomer 2 comprises an NDI type polyurethane elastomer, a TDI type polyurethane elastomer and an MDI type polyurethane elastomer.

[0035] The polyurethane elastomer 2 is formed by the reaction of oligomer polyol, polyisocyanate and chain extender, and different structures and types are formed according to different raw materials, proportions, reaction methods and conditions, which has the advantages of high hardness, good strength, high elasticity, high wear resistance, tear resistance, aging resistance, ozone resistance and puncture resistance.

[0036] It is to be noted that terminology such as first and second, and the like, is merely used to differentiate one entity or action from another, and does not necessarily require or imply any such actual relationship or order between such entities or actions. Moreover, the terms "comprising", "including", or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0037] The above-described embodiments are merely preferred ways of the present application, and are not intended to limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope of the present application as defined by the claims.

Claims

1. A polyurethane elastomer composite rubber seismic isolation bearing, characterized by: The rubber shock isolation support body (1) is internally provided with at least one through hole (11) for setting polyurethane elastomer (2), and the polyurethane elastomer (2) is arranged in the through hole (11).

2. The polyurethane elastomer composite rubber seismic isolation bearing according to claim 1, characterized by: The rubber shock isolation support body (1) comprises a rubber shock isolation piece (12), the top and bottom of the rubber shock isolation piece (12) are respectively connected with an upper connecting plate (13) and a lower connecting plate (14), the upper connecting plate (13) is parallel to the lower connecting plate (14), the through hole (11) penetrates the upper connecting plate (13), the rubber shock isolation piece (12) and the lower connecting plate (14) in sequence, and a rubber protective layer (15) is connected to the side wall of the rubber shock isolation piece (12).

3. The polyurethane elastomer composite rubber seismic isolation bearing according to claim 2, characterized in that: The rubber shock isolation piece (12) comprises an internal rubber layer (121) and a stiffened steel plate (122), the internal rubber layer (121) and the stiffened steel plate (122) are provided with a plurality of layers and are arranged in a cross-laminated manner, and the stiffened steel plate (122) is parallel to the upper connecting plate (13).

4. The polyurethane elastomer composite rubber seismic isolation bearing according to claim 2, characterized by: The outer side of the upper connecting plate (13) and the lower connecting plate (14) is provided with a groove, the groove is arranged at a position corresponding to the position of the through hole (11), a cover plate (3) for protecting the polyurethane elastomer (2) is arranged in the groove, and the thickness of the cover plate (3) corresponds to the opening depth of the groove.

5. The polyurethane elastomer composite rubber seismic isolation bearing according to claim 1, wherein: The polyurethane elastomer (2) comprises an NDI type polyurethane elastomer, a TDI type polyurethane elastomer and an MDI type polyurethane elastomer.

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