Lub teeb yuag tsim ntawm Fishplates thiab Adaptation Technology rau txawv Rail Joints
Dab tsi yog cov qauv tsim cov ntsiab lus ntawm lub teeb ntses daim hlau rau lub teb chaws tus qauv 60kg / m rails?
Lub hauv paus ntawm kev tsim lub teeb ci ntses daim hlau rau lub teb chaws tus qauv 60kg / m rails yog los txhim kho tus ntoo khaub lig-sectional duab ntawm qhov chaw ntawm kev ua kom lub zog tensile. Ua ntej, qhov sib txawv ntawm tus ntoo khaub lig-section tsim tau txais, txo qhov nruab nrab tuab ntawm cov ntses phaj los ntawm cov tsoos 28mm mus rau 22mm thaum khaws cov thickness ntawm ob qho tag nrho ntawm 28mm, uas tsis tsuas yog txo qhov hnyav tab sis kuj ua kom lub zog ntawm qhov kev ntxhov siab ntawm qhov sib koom ua ke. Qhov thib ob, qhov txo qhov hnyav tau qhib rau hauv qhov tsis yog - qhov hnyav ntawm cov ntses phaj. Txoj kab uas hla ntawm qhov txo qhov hnyav yog 30 hli, thiab 4 qhov sib npaug qhov hnyav txo qhov tau qhib ntawm txhua lub phaj ntses, uas tuaj yeem txo cov khoom noj ntau dua 15%. Txoj hauj lwm ntawm cov ntsia liaj qhov rooj ntawm cov ntses phaj yuav tsum tau ua raws li qhov sib koom ua ke bolt qhov ntawm lub teb chaws tus qauv 60kg / m rail, nrog rau qhov sib txawv ntawm qhov sib txawv ntawm ± 0.2 hli los xyuas kom meej installation raug. Q345B alloy steel yog xaiv raws li cov khoom siv, nrog lub zog tensile Ntau dua lossis sib npaug ntawm 510MPa thiab lub zog tawm los Ntau dua lossis sib npaug rau 345MPa tom qab quenching thiab tempering, ua tau raws li qhov xav tau ntawm kev sib koom ua ke. Tsis tas li ntawd, qhov saum npoo ntawm cov ntses phaj yuav tsum tau chamfered nrog lub chamfer vojvoog ntawm 5 hli kom tsis txhob khawb cov rail sib koom nto nrog cov npoo ntse thiab txhim kho kev ua haujlwm kev nyab xeeb thaum lub sijhawm teeb tsa.
Dab tsi yog qhov tshwj xeeb adaptation yuav tsum ntawm lub teeb yuag ntses daim hlau rau txawv teb chaws tus qauv UIC60 rails?
Qhov kev hloov pauv tseem ceeb ntawm cov phaj ntses sib sib zog nqus rau txawv teb chaws tus qauv UIC60 rails yog kom phim tus ntoo khaub lig-sectional size thiab bolt layout standard of its joints. Ua ntej, qhov ntev ntawm cov ntses phaj yuav tsum tau tsim raws li 800 hli raws li UIC cov qauv, 50 hli ntev tshaj cov ntses phaj rau lub teb chaws tus qauv 60kg / m rails, hloov mus rau qhov sib tshooj ntev ntawm UIC60 ntsia. Qhov thib ob, tus naj npawb thiab qhov sib nrug ntawm lub qhov ntsia hlau yuav tsum ua raws li UIC cov qauv. Txhua lub phaj ntses yog muab nrog 6 lub qhov ntsia hlau nrog lub qhov sib nrug ntawm 140mm kom ntseeg tau tias kev sib txuas nrog UIC tus qauv bolts. Rau lub teeb yuag tsim, ib tug hollow qauv yog saws es tsis txhob ntawm cov tsoos khoom qauv. Qhov dav ntawm thaj tsam hollow yog 40mm thiab qhov ntev yog 300mm, uas tuaj yeem txo qhov hnyav ntau dua 20%. Cov khoom siv yog European tus qauv S355JR weathering steel, yoog rau cov huab cua ntub hauv qee qhov chaw hauv Tebchaws Europe thiab tiv thaiv cov ntses phaj los ntawm xeb thiab cuam tshuam rau kev sib koom ua ke. Tsis tas li ntawd, qhov chaw sib cuag ntawm cov ntses phaj thiab cov tsheb ciav hlau yuav tsum tau txhuam hniav, nrog qhov tob ntawm 0.5 hli thiab qhov sib nrug ntawm 2 hli, ua rau muaj kev sib txhuam quab yuam ntawm qhov chaw sib cuag thiab txhim kho kev tiv thaiv kev sib tw ntawm kev sib koom tes, nrog rau kev tiv thaiv - plam coefficient ntau dua los yog sib npaug rau 0.4.
Dab tsi yog lub zog lav ntsuas rau lub teeb yuag ntses daim hlau hauv hnyav -haul kab tsheb ciav hlau pob qij txha?
Rail pob qij txha hauv hnyav- cov kab tsheb thauj khoom hnyav hnyav, thiab lub zog lav ntawm lub teeb yuag ntses daim hlau yuav tsum pib los ntawm ob qho tib si qauv thiab txheej txheem. Ua ntej, siab - cov khoom siv zog yog xaiv, siv 42CrMo alloy steel. Tom qab quenching thiab tempering, nws lub zog tensile ntau dua los yog sib npaug rau 1080MPa thiab lub zog tawm los yog ntau dua los yog sib npaug rau 930MPa, uas yog ntau tshaj 1 zaug siab dua li cov khoom siv ntses zoo tib yam. Thib ob, ntxiv cov ribs ntxiv nyob ib ncig ntawm lub qhov ntsia liaj qhov rooj ntawm cov ntses phaj, nrog rau qhov siab ntawm 8 hli thiab qhov dav ntawm 10 hli, uas tuaj yeem txhim kho lub zog tiv thaiv ntawm lub qhov ntsia hlau qhov chaw thiab tsis txhob bolt qhov deformation nyob rau hauv hnyav - thauj khoom. Rau kev tsim lub teeb yuag, lub hauv paus thinning yog saws es tsis txhob qhib qhov hnyav txo qhov: qhov tuab ntawm qhov tsis yog - qhov kev ntxhov siab ntawm cov ntses phaj yog txo kom 18 hli, thiab lub thickness ntawm qhov kev nyuab siab yog khaws cia ntawm 30mm kom ntseeg tau tias lub zog tsis cuam tshuam. Tsis tas li ntawd, qhov saum npoo ntawm cov ntses phaj yuav tsum tau carburized, nrog carburized txheej thickness ntawm 0.8-1.2mm thiab nto hardness ncav cuag HRC55-60, txhim kho hnav tsis kam thiab tsis txhob thickness txo los ntawm kev sib txhuam. Thaum lub sij hawm installation, high-strength bolts ntawm qib 10.9 yuav tsum tau siv los xyuas kom meej tias tag nrho cov tensile lub zog ntawm kev sib koom ua tau raws li qhov yuav tsum tau ntawm hnyav-haul kab.
Dab tsi yog qhov nthuav dav adaptation thev naus laus zis ntawm lub teeb yuag ntses daim hlau rau cov pob qij txha hauv kev sib txuas txuas txuas ntxiv?
Rail pob qij txha nyob rau hauv tsis tu ncua welded rails muaj kub expansion thiab contraction deformation, thiab cov tub ntxhais ntawm expansion adaptation ntawm lub teeb yuag ntses daim hlau yog txais yuav elastic structural tsim. Ua ntej, elastic expansion seem yog teem rau ntawm ob qho kawg ntawm cov ntses phaj, nrog ib tug tuab ntawm 15 hli thiab ib tug ntev ntawm 100 hli, uas muaj ib tug tej yam elastic deformation muaj peev xwm thiab hloov mus rau lub expansion thiab contraction ntawm ± 5 hli ntawm rail pob qij txha. Qhov thib ob, elastic roj hmab gaskets nrog ib tug tuab ntawm 3 hli thiab ua los ntawm nitrile roj hmab yog ntsia rau ntawm qhov chaw sib cuag ntawm cov ntses phaj thiab cov tsheb ciav hlau, uas tsis tsuas yog txhim khu lub sealing kev ua tau zoo ntawm kev sib koom tes tab sis kuj tsis cuam tshuam lub load tshwm sim los ntawm kub expansion thiab contraction. Rau lub teeb yuag tsim, ib tug honeycomb nyob rau hauv cov qauv yog saws, nrog ib tug honeycomb qhov txoj kab uas hla ntawm 10 hli, uas yuav txo tau qhov hnyav los ntawm ntau tshaj 25% thaum ua kom tag nrho nruj ntawm cov ntses phaj. Tsis tas li ntawd, elastic anti{10}}loosing ceev yog siv rau cov ntses phaj bolts los xyuas kom meej tias cov bolts tsis loosen thaum lub sij hawm nthuav thiab contraction deformation ntawm txoj kev tsheb ciav hlau, kom ntseeg tau tias kev sib txuas ruaj khov ntawm kev sib koom tes. Thaum lub sij hawm installation, lub preload ntawm cov ntses phaj yuav tsum tau tswj ntawm 25-30kN, uas tsis tsuas yog ua kom lub anti-slip kev ua tau zoo ntawm kev sib koom tes tab sis kuj reserves qhov chaw rau expansion thiab contraction deformation ntawm txoj kev tsheb ciav hlau.
Dab tsi yog qhov ntsuas ntsuas kev ua tau zoo thiab cov qauv kev lees paub rau cov phaj sib sib zog nqus ntses?
Cov ntsuas kev ua tau zoo ntawm cov phaj ntses sib sib zog nqus feem ntau suav nrog lub zog tensile, tiv thaiv - nplawm coefficient, qhov hnyav txo qis thiab qaug zog lub neej. Lub zog tensile raug kuaj pom los ntawm lub tshuab ntsuas tensile: lub zog tensile ntawm cov ntses daim hlau rau hnyav - cov kab yuav tsum siab dua lossis sib npaug rau 1080MPa, thiab rau cov kab zoo tib yam - cov kab nrawm dua lossis sib npaug rau 510MPa; lub anti-slip coefficient yog kuaj pom los ntawm lub tshuab kuaj shear: lub anti- plam coefficient ntawm kev sib cuag ntawm cov ntses phaj thiab cov tsheb ciav hlau yuav tsum siab dua los yog sib npaug rau 0.4; Tus nqi txo qhov hnyav yog xam los ntawm qhov hnyav: qhov hnyav ntawm cov phaj ntses sib sib zog nqus yuav tsum yog 15%-25% sib dua li cov phaj ntses tsoos; Kev qaug zog lub neej raug kuaj pom los ntawm lub tshuab ntsuas kev qaug zog: tus naj npawb ntawm cov voj voog qaug zog nyob rau hauv simulated hnyav-haul loads yuav tsum ntau dua los yog sib npaug rau 2 × 10⁶ zaug. Cov qauv kev lees paub yog: 10 daim phiaj ntses yog kuaj los ntawm txhua pawg rau kev sim, thiab txhua qhov ntsuas yuav tsum ua raws li cov qauv. Yog tias 1 lub phaj ntses tsis tsim nyog, yuav tsum tau kuaj ob npaug; yog tias tseem muaj cov khoom tsis tsim nyog nyob rau hauv ob chav sampling, lub batch raug txiav txim tsis tsim nyog. Tom qab dhau qhov kev lees paub, cov qauv khoom, cov khoom siv thiab cov khoom siv kuaj yuav tsum tau muab cim rau ntawm qhov chaw ntawm cov ntses phaj kom pab txhawb kev ua tau zoo tom qab.