Elastomer Bearings: Daim Ntawv Qhia Txog EN 1337-3: 2005
Elastomeric bearingsyog cov khoom tseem ceeb hauv kev tsim choj thiab kev tsim vaj tsev engineering, ua rau kev txhais lus thiab kev sib hloov txav thaum xa cov khoom thauj khoom nyab xeeb. Rau cov engineers thoob ntiaj teb, cov neeg cog lus, thiab cov chaw tsim khoom, nkag siab txog ob tus qauv tseem ceeb-Tebchaws EuropeTS EN 1337-3: 2005thiab Suav tebGB / T 20688 series-yog qhov tseem ceeb los xyuas kom meej tias kev ua raws cai, kev ua tau zoo, thiab hla-kev ua lag luam sib raug.
1. Kev Taw Qhia rau EN 1337-3: 2005 - Tebchaws Europe tus qauv rau Elastomeric Bearings
TS EN 1337-3: 2005 European Committee for Standardization (CEN) tus qauv tseem ceeb rauelastomeric yam ntxwv bearings, tau pom zoo nyob rau hauv 2004 thiab tau tswj hwm thoob plaws EU/EEA cov tswvcuab hauv xeev txij li xyoo 2005. Nws tswj hwm tus qauv tsim, cov khoom siv, kev tsim khoom, kev sim, thiab kev ua raws li cov bearings siv nyob rau hauv cov txuas hniav thiab cov qauv zoo sib xws nrog cov kev txhawb nqa zoo sib xws.
★Key Scope & Application
Yam khoom: Covlaminated bearings(Type A/B/C),laminated zawv zawg bearings(Hom D / E nrog PTFE zawv zawg qhov chaw), thiabPlain ncoo / sawb bearings(Hom F).
Dimensions & Khoom siv: Npaj qhov ntev txog li 1200 × 1200 mm; txwv rau cov roj hmab ntuj (NR) lossis chloroprene roj hmab (CR) (tsis muaj roj hmab rov qab tso cai).
Qhov kub thiab txias: -25℃rau +50℃(short-term mus txog +70℃); Tsis tshua muaj kub (-40 degree) daim ntawv thov yuav tsum tau ntxiv shear modulus validation.
★Core Technical Requirements
Shear Modulus0.7 MPa, 0.9 MPa, los yog 1.15 MPa (23 degree, nrog kam rau ua ± 0.10 MPa rau ± 0.20 MPa); qis-kub (-25 degree) thiab hnub nyoog (70℃rau 3 hnub) qhov sib txawv yuav tsum ua raws li cov kev txwv nruj.
Bond Strength: Steel-elastomer thiab PTFE-elastomer interfaces yuav tsum tiv taus shear strain mus txog 2 yam tsis muaj cracking lossis delamination.
Compression Performance: Rov ua dua compression (2 lab lub voj voog) tso cai tsawg dua lossis sib npaug li 12% modulus nce; tsis muaj kev cuam tshuam los yog phaj misalignment.
Manufacturing Tolerances: Plan size ±2/+4 mm; elastomer layer thickness tolerances ±10%–±15% (depending on layer thickness); total bearing thickness tolerances ±2 mm (≤100 mm) to ±4 mm (>150 mm).
★ Kev Ua Tau Zoo & CE Marking
Kev ua raws cai yuav tsum muaj kev tswj hwm lub Hoobkas tsim khoom (FPC) ib qho Annex N thiab ob txoj kev ntsuas kev ua raws li:
System 1: Rau cov ntawv thov tseem ceeb (piv txwv li, choj lub ntsiab bearings) - suav nrog thib peb-kev xeem hom, kev tshuaj xyuas lub Hoobkas, thiab kev soj ntsuam tsis tu ncua.
CE marking (raws li Annex ZA) mandates nthuav tawm cov ntsiab lus tseem ceeb (xws li, shear modulus, steel yield zog, kev khiav hauj lwm kub).
2. Tuam Tshoj tus GB/T 20688 Series - Sib npaug cov qauv rau kev sib tw thoob ntiaj teb
Suav tebGB / T 20688 series(GB/T 20688.3-2006 thiab GB/T 20688.4-2006) yog technically ua raws li EN 1337-3: 2005 tab sis haum rau hauv zos engineering xav tau. Nws yog qhov yuav tsum tau ua rau cov haujlwm hauv Suav teb thiab dav lees paub rau kev sib koom tes thoob ntiaj teb.
Kev sib raug zoo rau EN 1337-3: 2005
|
Feature |
TS EN 1337-3: 2005 |
GB/T 20688 Series |
|
Core Product Coverage |
Laminated, zawv zawg, tiaj tiaj / sawb bearings |
GB/T 20688.3 (zoo ib yam bearings)=EN Hom A/B/C/F; GB/T 20688.4 (sliding bearings)=EN Hom D/E |
|
Cov ntaub ntawv xav tau |
NR/CR, tsis muaj roj hmab rov qab |
Tib yam khoom txwv; Zoo tib yam lub cev / cov cuab yeej cuab tam (lub zog tensile Ntau dua lossis sib npaug rau 14 MPa rau cov qauv coj, compression teeb tsawg dua lossis sib npaug li 15% rau CR) |
|
Shear Modulus |
0.7 / 0.9 / 1.15 MPa |
Sib piv cov nqi tsim nyog; ncua qis -kub (-40 degree) validation rau cov cheeb tsam txias |
|
Sliding Nto |
PTFE thickness 1.5-2.5 hli |
PTFE thickness 1.5-3 hli; Qhov zoo tib yam lubrication dimple cheeb tsam (20% -30%) thiab ntim (10% -20%) yuav tsum |
|
Txoj Kev Xeem |
Shear modulus (Annex F), compression (Annex H), bond zog (Annex G) |
Kev ntsuas sib npaug (GB / T 528 rau lub zog tensile, GB / T 7759 rau compression set) ua raws li ISO cov qauv siv hauv EN 1337-3 |
3. Kev taw qhia tswv yim rau cov neeg koom nrog European & Asmeskas
Thaum twg yuav siv tus qauv twg?
EU/EEA Projects: Txoj Cai EN 1337-3: 2005 nrog CE cim; xyuas kom ua raws li CEN cov tswvcuab hauv lub xeev cov ntaub ntawv ntxiv hauv tebchaws (piv txwv li, ib feem ntawm kev nyab xeeb).
Suav Projects: Siv GB/T 20688.3/4; rau kev siv seismic.
Ntiaj teb no tej yaam num: Ua ntej ua raws li ob txoj cai - feem ntau cov kev xav tau sib tshooj, tab sis txheeb xyuas qhov kub thiab txias, kev ua siab ntev, thiab cov qauv ntsuas (piv txwv li, GB / T 20688's stricter low-temperature validation).
Kev txiav txim siab tseem ceeb rau Hla-Kev sib koom ua lag luam
Cov khoom sib xwsNR / CR yog universal, tab sis paub meej tias GB / T 20688 lub polymer sib xyaw txwv (tsawg dua lossis sib npaug rau 5% cov polymer theem nrab) phim EN 1337-3
Kev Ntsuas Kev Ntsuas: Siv ISO-txoj kev xeem sib npaug (piv txwv li, ISO 37=GB/T 528, ISO 1431-1=GB/T 7762)) kom tsis txhob muaj kev sim rov ua dua.
Marking & Cov ntaub ntawv: Rau CE cim, siv EN 1337-3; rau cov haujlwm hauv Suav teb, suav nrog GB / T 20688 daim ntawv pov thawj kev ua raws cai thiab cov ntaub ntawv tshuaj xyuas lub Hoobkas.
Xaus
TS EN 1337-3: 2005 thiab GB / T 20688 yog cov qauv sib xyaw ua ke uas tsim cov qauv ntsuas thoob ntiaj teb rau elastomeric kabmobkev ua tau zoo. Cov kws tshaj lij nyob sab Europe thiab Asmeskas tuaj yeem siv lawv cov kev sib koom ua ke los ua kom yooj yim hla- cov haujlwm ciam teb, thaum nkag siab txog kev hloov pauv hauv cheeb tsam (xws li Tuam Tshoj qhov qis- qhov kub thiab txias thiab seismic) ua kom muaj kev ua raws thiab kev ntseeg tau.
Rau tej yaam num uas yuav tsum muaj dual - kev nkag mus rau hauv kev ua lag luam, ua kom muaj kev sib raug zoo ntawm cov ntaub ntawv tseem ceeb, cov txheej txheem sib koom ua ke, thiab cov ntaub ntawv ua kom pom tseeb. Los ntawm kev paub txog cov qauv no, engineers thiab manufacturers tuaj yeem xa cov kabmob muaj kev nyab xeeb, ruaj khov rau cov txuas hniav thiab kev tsim vaj tse thoob ntiaj teb.
