Hom thiab Compatibility ntawm High -Speed Railway Fastening Systems
Dab tsi yog qhov txawv ntawm WJ-7 thiab WJ-8 fasteners?
Lub WJ-7 hom yog ib qho elastic sib cais fastener uas bears lateral zog los ntawm thauj tog rau nkoj bolts, thaum lub WJ-8 hom yog ib tug elastic non{15}}sib cais fastener uas cia siab rau txoj kev khiav slab lub xub pwg nyom rau dais lateral quab yuam, uas yog lub feem ntau core structural sib txawv ntawm ob. Nyob rau hauv cov nqe lus ntawm kev ntsuas kev hloov kho ntau yam, WJ-7 hom muaj kev hloov pauv tsis tu ncua ntawm -12-+12mm, thiab WJ-8 hom muaj kev hloov pauv hloov pauv ntawm -10-+10mm, nrog rau qhov sib txawv ntawm kev hloov kho qhov tseeb thiab ntau yam. Lawv haum rau ntau hom kev khiav: hom WJ-7 sib haum rau CRTS Ⅰ hom ballastless khiav, thiab WJ-8 hom yog haum rau CRTS Ⅱ hom thiab nws tus kheej tsim CRTS Ⅲ hom khiav slabs. Nyob rau hauv cov nqe lus ntawm daim ntawv thov scenarios, WJ-7 hom yog siv nyob rau hauv kab xws li Wenfu thiab Harbin-Dalian, thaum lub WJ-8 hom yog dav siv nyob rau hauv high-ceev railways xws li Beijing-Shanghai thiab Zhengzhou-Xi'an. Qhov sib txawv ntawm cov kabmob hom thiab cov yam ntxwv hloov kho ua rau lawv ua kom raug raws li cov qauv tsim cov qauv ntawm cov kab sib txawv.
Dab tsi yog qhov hloov ceev thiab taug qab hom elastic bar hom Ⅳ fastener?
Lub elastic bar hom Ⅳ fastener yog haum rau Ⅲb hom shoulderless prestressed pob zeb ballasted khiav nrog lub siab tshaj plaws ceev ntawm 250km / h, uas yog ib tug optimized thiab txhim kho cov khoom raws li elastic bar hom Ⅲ fastener. Nws qhov chaw tsim qauv yog ib qho tshwj xeeb fastener rau nruab nrab thiab siab - ceev ballasted lem, uas bears lateral force los ntawm pre-cov rooj zaum hlau thiab belongs rau ib qho elastic non- cais cov qauv. Qhov ntsuas kev hloov kho ntau yam yog -8-+4mm nrog qib kev hloov kho ntawm 1mm, thiab qhov siab hloov kho qhov siab kuj tau muab qhab nia los ntawm 1mm, ua tau raws li qhov xav tau hloov kho geometric ntawm nruab nrab thiab siab - kab nrawm. Lub fastener no tau ua tiav nyob rau hauv Xiamen{11}}Shenzhen High- kev tsheb ciav hlau ceev, thiab nws qhov kev ua tau zoo yoog raws li kev vibration thiab load yam ntxwv ntawm 250km / h qib kab. Piv nrog rau WJ series fasteners haum rau 350km / h, nws tsom ntau dua rau kev yooj yim installation thiab tus nqi sib npaug ntawm ballasted lem.
Dab tsi yog qhov sib txawv ntawm kev quab yuam-cov yam ntxwv ntawm kev sib cais elastic thiab tsis yog- sib cais fasteners?
Elastic sib cais fasteners ntawm nws tus kheej dais lateral zog los ntawm thauj tog rau nkoj bolts, nrog ntau ncaj qha quab yuam, uas yuav txo tau lub quab yuam quab yuam ntawm cov khiav slab thiab yog haum rau lub xub pwg nyom khiav. Elastic non-sib cais fasteners cia siab rau txoj kev khiav slab los yog pw tsaug zog lub xub pwg nyom rau sab nraud quab yuam, nrog ib tug yooj yim qauv thiab ntau dua installation efficiency, haum rau lub xub pwg nyom -nrog taug kev designs. Cov fasteners sib cais yog hloov tau yooj yim dua hauv kev kho qhov ntsuas thiab tuaj yeem ua tiav qhov kev hloov pauv tsis tu ncua, thaum tsis yog- cov fasteners sib cais feem ntau yog hloov kho nrog cov kev hloov kho kom raug. Nyob rau hauv cov nqe lus ntawm kev faib quab yuam, hom sib cais tuaj yeem zam qhov cuam tshuam ntawm lub xub pwg nyom ntawm kev ua haujlwm ntawm lub xub pwg, thaum tsis yog - hom sib cais yuav tsum tau ua kom lub zog thiab flatness ntawm lub xub pwg nyom. Lub zog tsim ntawm ob lub qauv yog nqa tawm nyob ib ncig ntawm txoj kev khiav thiab kev khiav hauj lwm ceev los xyuas kom meej lub zog sib npaug thiab ntev - lub sij hawm stability.
Yuav ua li cas xaiv qhov tsim nyog fastener raws li hom slab?
Ua ntej, nws yog ib qho tsim nyog yuav tsum tau qhia meej txog hom kev khiav slab (xws li CRTS Ⅰ / Ⅱ / Ⅲ hom) thiab cov yam ntxwv ntawm cov qauv (nrog lossis tsis muaj lub xub pwg), uas yog lub hauv paus tseem ceeb rau kev xaiv cov fasteners. CRTS Ⅰ hom shoulderless taug qab slabs yuav tsum tau sib phim nrog elastic cais fasteners (xws li WJ-7 hom), uas siv thauj tog rau nkoj bolts los dais lateral rog thiab hloov mus rau lub xub pwg nyom tsim. CRTS Ⅱ/Ⅲ hom lub xub pwg nyom-nrog taug kev slabs yog haum rau elastic non- cais fasteners (xws li WJ-8 hom), uas kis lateral quab yuam los ntawm lub xub pwg nyom nrog ib tug ntau matched qauv. Nyob rau tib lub sijhawm, tus tsim kev ceev ntawm txoj kab yuav tsum raug txiav txim siab: WJ series high-end fasteners yog nyiam rau 350km / h high-ceev kab, thiab elastic bar hom Ⅳ / V fasteners tuaj yeem xaiv rau 250km / h kab. Nws kuj tseem yuav tsum tau kuaj xyuas qhov kev hloov pauv ntawm cov fasteners kom ntseeg tau tias lawv tuaj yeem ua tau raws li qhov kev xav tau ntawm kev kho cov duab geometric ntawm kev saib xyuas tom qab, thiab thaum kawg ua tiav qhov kev hloov pauv ntawm cov fasteners thiab cov slab.
Dab tsi yog daim ntawv thov scenarios thiab technical zoo ntawm elastic bar hom V fastener?
Lub elastic bar hom V fastener yog haum rau Ⅲa hom lub xub pwg nyom- nruab nrog prestressed pob zeb ballasted khiav nrog ib tug siab tshaj plaws ceev ntawm 250km / h, thiab tau ua tiav nyob rau hauv tej yaam num xws li Nanning Line thiab Wuhan -Guangzhou Intercity Railway. Nws dais lub zog sab nraud los ntawm lub xub pwg pw tsaug zog, belongs rau ib qho elastic non- cais cov qauv, muaj cov qauv yooj yim thiab yooj yim installation, thiab tuaj yeem txo cov nqi tsim kho thiab kev mus ncig. Qhov ntsuas kev hloov kho yog -8-+4 hli, qhov siab hloov kho qhov siab yog 10 hli, thiab qhov kev hloov kho theem sib txawv yog 1 hli, uas tuaj yeem ua tau raws li kev tu txhua hnub ntawm qhov nruab nrab thiab siab - kab ceev. Lub fastener no muaj kev qaug zog zoo heev, tuaj yeem hloov mus rau cov tsheb ciav hlau tsis tu ncua dynamic load cuam tshuam, thiab txuas ntxiv lub neej kev pab cuam. Piv nrog rau cov elastic bar hom Ⅳ, nws yog qhov tsim nyog rau Ⅲa hom pw tsaug zog, tsim kom muaj kev sib haum xeeb hauv kev hloov kho ntawm ntau hom kev tsheb ciav hlau thiab ua kom cov kev xaiv fastener rau nruab nrab thiab siab -ceev ballasted lem.