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Bridge shock-absorption support

A shock-absorbing bearing and bridge technology, which is applied in the direction of bridges, bridge parts, bridge construction, etc., can solve the problems of not being able to apply cold-resistant basin rubber bearings, poor cold resistance of rubber blocks, and elastic loss, etc., to achieve Improve low temperature resistance, improve low temperature performance, and meet the needs of mechanical properties

Active Publication Date: 2019-03-19
温州市龙湾大地绿化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the north where the weather is cold, the rubber block needs to be used under low temperature compression for a long time. If the cold resistance of the rubber block is poor, it will easily lead to loss of elasticity
Since the mechanism of each factor of rubber aging is different, this rubber material is not suitable for cold-resistant pot rubber bearings and needs to be improved

Method used

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  • Bridge shock-absorption support
  • Bridge shock-absorption support

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A bridge shock-absorbing bearing, such as figure 1 As shown, it includes a top plate 1, a stainless steel plate 2, a polytetrafluoroethylene plate 3, a middle steel plate 4, a rubber block 5 and a bottom basin 6 from top to bottom. The rubber block 5 is placed at the bottom of the bottom basin 6, the middle steel plate 4 is partly placed in the bottom basin 6, and a sealing ring 7 is arranged between the rubber block 5 and the middle steel plate 4.

Embodiment 2

[0052] The rubber block in embodiment one comprises the following components by weight:

[0053] 60 parts of natural rubber;

[0054] 30 parts of rare earth butadiene rubber, model Nd45, purchased from Korea LG Chem;

[0055] 3 parts of zinc oxide;

[0056] 1 part stearic acid;

[0057] Anti-aging agent BLE 1 part;

[0058] Carbon black N330 15 parts;

[0059] 0.5 parts of microcrystalline wax;

[0060] 2 parts sulfur;

[0061] Accelerator DM 0.5 parts;

[0062] 3 parts of plant extract;

[0063] 10 parts of calcium carbonate whiskers, model NP-CW2, purchased from Shanghai Fengzhu Composite New Material Technology Co., Ltd.;

[0064] 3 parts of dimethyldivinylsilane;

[0065] 2 parts of dibutyl sebacate.

[0066] The preparation process of plant extract is as follows:

[0067] Step 1, taking larch bark and placing it in a cool and ventilated place to dry, then pulverizing to powder, passing through a 100-mesh sieve to obtain the pulverized product;

[0068] Step 2, m...

Embodiment 3

[0080] The rubber block in embodiment one comprises the following components by weight:

[0081] 70 parts of natural rubber;

[0082] 40 parts of rare earth butadiene rubber, model Nd45, purchased from Korea LG Chem;

[0083] 5 parts of zinc oxide;

[0084] 3 parts of stearic acid;

[0085] Anti-aging agent BLE 2 parts;

[0086] Carbon black N330 25 parts;

[0087] 1.5 parts of microcrystalline wax;

[0088] 3 parts sulfur;

[0089] Accelerator DM 1 part;

[0090] 5 parts of plant extract;

[0091] 15 parts of calcium carbonate whiskers, model NP-CW2, purchased from Shanghai Fengzhu Composite New Material Technology Co., Ltd.;

[0092] 6 parts of dimethyldivinylsilane;

[0093] 5 parts of dibutyl sebacate.

[0094] The preparation process of plant extract is as follows:

[0095] Step 1, taking larch bark and placing it in a cool and ventilated place to dry, then pulverizing to powder, passing through a 100-mesh sieve to obtain the pulverized product;

[0096] Step ...

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Abstract

The invention discloses a bridge shock-absorption support. The bridge shock-absorption support successively comprises a top plate, a stainless steel plate, a polytetrafluoroethylene plate, an intermediate steel plate, a rubber block and a bottom basin, wherein the rubber block is arranged in the bottom basin, a sealing ring is arranged between the rubber block and the intermediate steel plate, therubber block comprises the following components in parts by weight: 60 to 70 parts of natural rubber, 30 to 40 parts of rare-earth cis-polybutadiene, 3 to 5 parts of zinc oxide, 1 to 3 parts of stearic acid, 1 to 2 parts of anti-aging agent, 15 to 25 parts of filler, 0.5 to 1.5 parts of microcrystalline wax, 2 to 3 parts of sulfur, 0.5 to 1 part of accelerant, 3 to 5 parts of plant extract, and 10 to 15 parts of calcium carbonate whisker. After the surface of the calcium carbonate is modified by the plant extract, the calcium carbonate whiskers can be uniformly dispersed among macromoleculesof the rubber, the glass-transition temperature of the natural rubber is shifted to a low-temperature trend, and the low-temperature application performance of the rubber block can be improved.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a bridge damping bearing. Background technique [0002] Bridges are generally composed of superstructure, substructure, bearings and auxiliary structures. The bridge bearing is an important component that connects and restrains the upper and lower structures of the bridge, and is an indispensable part for the load-bearing of the bridge. There are various bridge bearing structures, among which the basin rubber bearing is the most common and has excellent shock absorption effect. The rubber material in the pot rubber bearing is an important part, and its life affects the quality of the rubber bearing, which in turn affects the service life of the bridge. However, rubber materials will age due to their own or external factors, so how to improve the service life of rubber materials is a very important issue at present. [0003] The Chinese patent with the notification number CN1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08L91/06C08K13/06C08K9/02C08K9/04C08K3/22C08K5/09C08K3/04C08K5/11C08K7/08C08K5/5425B29C35/02E01D19/00E01D19/04
CPCB29C35/02C08K2003/2213C08L7/00C08L2205/03E01D19/00E01D19/04C08L9/00C08L91/06C08K13/06C08K9/02C08K9/04C08K3/22C08K5/09C08K3/04C08K5/11C08K7/08C08K5/5425
Inventor 吴桦杰陈颖何春平
Owner 温州市龙湾大地绿化有限公司
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