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Rubber gasket used for pot bearing and capable of making force measurement precise and pot bearing thereof

A technology of rubber pads and supports, applied in the direction of measuring force, measuring devices, instruments, etc., can solve the problems of bias, rotational bias, etc., and achieve the effect of reducing manufacturing cost, solving local bias, and reducing structural strength allowance.

Active Publication Date: 2019-03-29
CHENGDU XINZHU ROAD & BRIDGE MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the rotation bias problem of the existing basin-type support, adopt a new material that can reliably transmit the compressive stress as the rubber pad, and the compressive stress still transmits evenly when the support rotates, which not only maintains the The existing function of the support also solves the problem of partial bias

Method used

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  • Rubber gasket used for pot bearing and capable of making force measurement precise and pot bearing thereof
  • Rubber gasket used for pot bearing and capable of making force measurement precise and pot bearing thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]The raw material of the rubber pad of this embodiment includes 100 parts of chloroprene rubber, 5 parts of zinc oxide, 2 parts of stearic acid, 20 parts of carbon black, 0.5 part of accelerator NA-22, 2 parts of accelerator DM, 2 parts of antioxidant 4010NA, 2 parts of anti-aging agent ODA, 2 parts of paraffin, 15 parts of plasticizer DOP, 4 parts of magnesium oxide, 2 parts of anti-scorch agent CR-X, 2 parts of HVA-2.

[0036] Add the synthetic rubber and the above-mentioned additives into the internal mixer for mixing, then preform, and then install the mold for vulcanization. The vulcanization temperature is 140 ° C, the vulcanization compressive stress is 15 MPa, and the vulcanization time is 2 to 5 hours. The required size is directly produced. rubber mat. Wherein, the IRHD hardness of the rubber pad prepared in this embodiment is 30, the tensile strength is 20 MPa, and the elongation at break is 650%.

[0037] The above-mentioned rubber pad is assembled with the b...

Embodiment 2

[0039] The raw materials of the rubber pad in this embodiment include 100 parts of natural rubber, 5 parts of zinc oxide, 2 parts of stearic acid, 20 parts of carbon black, 1 part of accelerator DM, 2 parts of accelerator CZ, 2 parts of anti-aging agent 4010NA, 2 parts of anti-aging agent RD 2 parts, 2 parts paraffin, 15 parts engine oil, 1 part sulfur.

[0040] Add natural rubber and the above-mentioned additives into the internal mixer for mixing, then preform, and then mold and vulcanize. The vulcanization temperature is 140°C, the vulcanization compressive stress is 15MPa, and the vulcanization time is 2 to 5 hours. The required size is directly produced. rubber mat. Wherein, the IRHD hardness of the rubber pad prepared in this embodiment is 32, the tensile strength is 23 MPa, and the elongation at break is 660%.

[0041] The above-mentioned rubber pad is assembled with the bottom basin 1, the middle steel plate 2 and the compressive stress sensor 4. The rubber pad 3 is a...

Embodiment 3

[0043] The raw materials of the rubber pad in this embodiment include 100 parts of EPDM rubber, 5 parts of zinc oxide, 2 parts of stearic acid, 20 parts of carbon black, 4 parts of accelerator EM-35, 1 part of anti-aging agent 4010NA, and 1 part of anti-aging agent RD. 50 parts of paraffin oil, 1 part of sulfur.

[0044] Add EPDM rubber and the above-mentioned additives into an internal mixer for mixing, then preform, and then mold and vulcanize. The vulcanization temperature is 140 ° C, the vulcanization compressive stress is 15 MPa, and the vulcanization time is 2 to 5 hours. Rubber pads of the desired size. Wherein, the IRHD hardness of the rubber pad prepared in this embodiment is 29, the tensile strength is 21 MPa, and the elongation at break is 655%.

[0045] The above-mentioned rubber pad is assembled with the bottom basin 1, the middle steel plate 2 and the compressive stress sensor 4. The rubber pad 3 is arranged between the bottom basin 1 and the middle steel plate ...

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Abstract

The invention discloses a rubber gasket used for a pot bearing and capable of making force measurement precise and the pot bearing thereof. Raw materials of the rubber gasket comprise (by weight): 90-110 parts of natural raw rubber or synthetic rubber, 4-7 parts of zinc oxide, 1-3 parts of stearic acid, 10-30 parts of carbon black, 0-1.5 parts of sulphur, 2-5 parts of a promoter, 2-5 parts of an anti-aging agent, 10-50 parts of a plasticizer and 0-10 parts of a processing aid. The pot bearing comprises a bottom pot, an intermediate steel plate, a rubber gasket and a compressive stress sensor.The rubber gasket is arranged between the bottom pot and the intermediate steel plate; the compressive stress sensor is disposed inside the rubber gasket or on bottom wall and sidewall of the bottom pot and / or at the bottom of the intermediate steel plate; and the rubber gasket is the above rubber gasket. According to the invention, the problem of unsymmetrical pressure during rotating of existingpot bearing can be solved. By using the new material capable of reliable transfer of compressive stress as the rubber gasket, compressive stress applied on the bearing during rotation is still transferred evenly. Thereby, existing functions of bearings are maintained, and the problem of local unsymmetrical pressure is also solved.

Description

technical field [0001] The invention relates to the technical field of bridge supports, and more specifically, relates to a rubber pad used for a basin-type support and capable of accurate force measurement and the basin-type support thereof. Background technique [0002] At present, basin-type rubber bearings are used for highway bridges and railway bridges. The pressure-bearing rubber pads used in the steel basins have a hardness of about IRHD 60, which mainly transmits vertical pressure and buffers the vibration of the upper structure, and is suitable for the beam body during bridge operation. rotation etc. [0003] The compressive stress carried by the rubber pad is about 25MPa to 30MPa. When the bridge does not rotate, the vertical compressive stress is relatively evenly distributed, but when the upper beam body rotates, it will push the middle steel plate of the basin rubber bearing to rotate. , the rubber pad will be subject to a relatively obvious bias, and the loca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L11/00C08L7/00C08L23/16C08L91/06C08L91/00C08K13/02C08K3/22C08K5/09C08K3/04G01L1/00
CPCC08K2003/222C08K2003/2296C08L7/00C08L11/00C08L23/16C08L2205/02C08L2205/03G01L1/00C08L91/06C08K13/02C08K3/22C08K5/09C08K3/04C08L91/00
Inventor 夏玉龙游珏涛黄菲张松骆明成黄杰王润滋
Owner CHENGDU XINZHU ROAD & BRIDGE MASCH CO LTD
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