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A bridge shock absorber

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: 2021-03-30
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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  • A bridge shock absorber
  • A bridge shock absorber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A bridge shock absorbing support, such as figure 1 As shown, from top to bottom, the top plate 1, the stainless steel plate 2, the polytetrafluoroide 3, the intermediate steel plate 4, the rubber block 5, and the bottom basin 6 are sequentially included. The rubber block 5 is placed at the bottom of the bottom basin 6, and the intermediate steel sheet 4 is disposed in the bottom basin 6, and the rubber block 5 and the intermediate steel plate 4 are provided with a seal ring 7.

Embodiment 2

[0052] The rubber block in Example No. 1 includes components of the following weight:

[0053] 60 parts of natural rubber;

[0054] 30 copies of rare earth relief rubber, model ND45, purchased from South Korea LG Chem;

[0055] 3 copies of zinc oxide;

[0056] 1 stearic acid;

[0057] Anti-aging agent BLE 1;

[0058] Carbon black N330 15 copies;

[0059] 0.5 microcrystalline wax;

[0060] Sulfur 2 parts;

[0061] Accelerator DM 0.5 parts;

[0062] 3 parts of plant extract;

[0063] Calcium carbonate, 10 parts, model NP-CW2, purchase from Shanghai Fengzhu Composite New Material Technology Co., Ltd.

[0064] 3 parts of dimethylphthylsylsilane;

[0065] 2 parts of dibutyl sebacate.

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

[0067] Step 1, take the larch bark and put it in a cool and ventilated ventilation, then crush until the end, over 100 mesh sieve, get crushing;

[0068] Step 2, mixing the crushed material and a 75% ethanol solution of 10 times the weight o...

Embodiment 3

[0080] The rubber block in Example No. 1 includes components of the following weight:

[0081] 70 natural rubber;

[0082] 40 parts of rare earth relief rubber, model ND45, purchased from Korea LG Chem;

[0083] Zinc oxide 5 copies;

[0084] 3 copies of stearic acid;

[0085] 2 copies of the aging agent BLE;

[0086] Carbon black N330 25 copies;

[0087] 1.5 parts of microcrystalline wax;

[0088] 3 parts of sulfur;

[0089] Promotive DM 1;

[0090] 5 parts of plant extract;

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

[0092] 6 parts of dimethylphthylsylsilane;

[0093] 5 parts of dibutyl sebacate.

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

[0095] Step 1, take the larch bark and put it in a cool and ventilated ventilation, then crush until the end, over 100 mesh sieve, get crushing;

[0096] Step 2, mixing the crushed material with a 75% ethanol solution of 15 times the ...

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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 present invention relates to the field of bridge construction, and more particularly to a bridge shock absorbing support. Background technique [0002] The bridge is typically constructed of an upper structure, a lower structure, a support, and an accessory structure. The bridge support is an important component of the connection, constraint bridge, and is an indispensable part of the load of the bridge. The bridge holder has a variety of structures, with the most common, and excellent damping effects. The rubber material in the basin rubber support acts as an important part, and its life affects the quality of the rubber support, which in turn affects the service life of the bridge. The rubber material will have aging due to its own or external factors, so how to improve rubber material use life is a very important topic. [0003] Chinese patents for CN105175911B discloses a rubber material for weather resistant anti-aging plate rubber support, which c...

Claims

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Application Information

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Patent Type & Authority Patents(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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