Kev sib xyaw thiab kev sib haum xeeb Cov Ntsiab Cai ntawm Rail Fastening Systems
Dab tsi yog cov khoom tseem ceeb muaj pes tsawg leeg thiab kev ua haujlwm ntawm kev khiav ceev?
Txoj kev khiav ceev yog tsim los ntawm tsib pawg ntawm cov khoom: elastic bars, bolts, spikes, siab daim hlau thiab nyob rau hauv -rail pads, thiab qee qhov xwm txheej kuj muaj xws li cov khoom siv xws li xauv txiv ntseej thiab lub caij nplooj ntoos hlav ntxhua khaub ncaws. Elastic tuav dais lub elastic compression muaj nuj nqi los xyuas kom meej lub tsheb ciav hlau txuas nrog rau lub sleeper thiab cia expansion qhov chaw. Bolts / spikes yog cov tub ntxhais txuas uas txhim kho cov phaj siab thiab cov hlua khi ntawm cov neeg pw tsaug zog thiab xa cov khoom ntsug thiab kab rov tav. Cov phaj siab yog lub luag haujlwm rau kev txwv tsis pub txav mus rau sab nraud ntawm txoj kev tsheb ciav hlau, tiv thaiv kev tsheb ciav hlau sib txawv thiab txhim kho kev ruaj ntseg. Hauv qab -rail pads ua lub luag haujlwm ntawm buffering kev co txo qis thiab kev thauj khoom tsis sib xws, txo qhov kev puas tsuaj ntawm lub log- kev tsheb nqaj hlau cuam tshuam rau txoj kev khiav, thiab txhua yam khoom siv sib koom ua ke los xyuas kom meej qhov kev ua haujlwm ntawm txoj hlua khi.
Dab tsi ntawm cov txheej txheem fastening tuaj yeem muab faib ua raws li hom kab, thiab cov xwm txheej twg lawv haum rau?
Lub fastening system feem ntau muab faib ua peb pawg: railway main line fastening system, metro light rail fastening system thiab industrial thiab mining lifting fastening system, haum rau cov haujlwm sib txawv. Txoj kev tsheb ciav hlau txoj kab tseem ceeb fastening yog tsim rau kev ceev ceev thiab siab - txoj kab tsheb ciav hlau ceev, txais yuav elastic bar hom fastening, yuav tsum muaj siab elasticity thiab siab qaug zog lub neej, thiab sib tw 50/60kg / m lub teb chaws tus qauv rails. Txoj kev tsheb ciav hlau metro tsheb ciav hlau ceev ceev tsom rau kev vibration thiab suab nrov txo, ntxiv cov roj hmab kev co txo cov khoom, hloov mus rau hauv nroog tsheb ciav hlau, thiab ua tau raws li qhov tsawg - suab nrov yuav tsum ua haujlwm. Kev lag luam thiab mining lifting fastening system yog siab phaj hom fastening nrog lub zog compressive ntau dua los yog sib npaug rau 500MPa, haum rau QU70 / QU120 lifting rails, ua tau raws li qhov hnyav -load haujlwm xav tau ntawm lub Hoobkas cranes. Cov kab sib txawv muaj qhov sib txawv ntawm kev thauj khoom thiab ceev, uas txiav txim siab qhov sib txawv ntawm kev xaiv ntawm fastening systems.
Dab tsi yog qhov tseem ceeb ntawm kev hloov pauv ntawm cov txheej txheem fastening rau cov qauv tsheb ciav hlau?
Lub kaw lus fastening yuav tsum raug sib raug zoo nrog lub cev hnyav ntawm txoj kev tsheb ciav hlau, 50/60kg / m lub teb chaws tus qauv rails yog haum rau hom Ⅱ / Ⅲ elastic bar fastening systems, thiab 75kg / m rails yog haum rau hnyav - lub luag hauj lwm fastening systems. Txawv teb chaws tus qauv UIC60 rails yuav tsum tau raws li European tus qauv SKL15 / SKL30 fastening systems, thiab AREMA rails yog haum rau American standard fastening accessories, thiab hla - txheem sib tov yog nruj me ntsis txwv tsis pub. Lub zog nias ntawm lub elastic bar yuav tsum sib npaug ntawm txoj kab tsheb ciav hlau -section kom tsis txhob rail loosening vim tsis txaus nias quab yuam los yog rail deformation vim muaj zog ntau dhau. Cov qauv phaj siab yuav tsum sib haum rau txoj kab dav dav, QU80 rails tau nruab nrog QU80 siab daim hlau, thiab 60kg / m rails tau nruab nrog tshwj xeeb lub teb chaws tus qauv siab daim hlau kom haum. Cov specifications ntawm spikes / bolts yuav tsum tau tsim raws li lub load ntawm lub fastening system, thiab siab -lub zog bolts ntawm qib 8.8 thiab siab dua yuav tsum tau xaiv rau hnyav- cov kab ua haujlwm kom ntseeg tau tias muaj zog txuas.
Dab tsi yog qhov sib txawv ntawm qhov siab - txoj kev tsheb ciav hlau ceev thiab txoj kev tsheb ciav hlau zoo tib yam?
Lub siab -kev ceev railway fastening system txais tshwj xeeb elastic tuav rau ballastless lem, xws li hom Ⅴ elastic bars, nrog ib tug zoo li qub stiffness ntawm 60 ± 10kN / mm thiab ib tug dynamic - zoo li qub stiffness ratio Tsawg dua los yog sib npaug rau 2.0, uas muaj elasticity zoo dua thiab txo lub log - rail kev co Txoj kev tsheb ciav hlau zoo tib yam feem ntau siv hom Ⅲ elastic tuav nrog me ntsis qis elastic ntsuas, ua kom haum rau lub hauv paus deformation ntawm ballasted lem thiab pheej yig dua. Lub bolts ntawm lub siab -kev ceev railway fastening system yog 10.9 qib siab- lub zog bolts nrog lub zog tswj qhov tseeb ntawm ± 5% thiab muaj zog tiv thaiv- txo kev ua haujlwm, ua tau raws li qhov xav tau ntawm kev vibration siab - tsav tsheb. Txoj kev tsheb ciav hlau zoo tib yam tuaj yeem siv 8.8 qib bolts nrog cov kev xav tau xoob xoob, ua kom haum rau cov yam ntxwv ntawm kev tsav tsheb ceev. Lub siab - kev tsheb ciav hlau ceev ceev muaj xws li kev co tshwj xeeb - damping nyob rau hauv - tsheb ciav hlau pads, thaum lub tsheb ciav hlau zoo tib yam tsom rau lub hauv paus buffering, thiab kev vibration -damping thiab fastening precision ntsuas ntawm ob yog qhov sib txawv.
Dab tsi cuam tshuam qhov kev txhim kho zoo ntawm lub fastening system muaj rau kev khiav haujlwm?
Tsis txaus bolt torque thaum lub sij hawm installation ntawm lub fastening system yuav ua rau tsis txaus elastic bar nias quab yuam, longitudinal txav ntawm txoj kev tsheb ciav hlau, ntsuas qhov sib txawv, thiab cuam tshuam rau kev tsav tsheb smoothness. Skewed installation ntawm cov phaj siab yuav ua rau tsis sib xws rau sab nraud ntawm txoj kev tsheb ciav hlau, ua rau lub taub hau hnyav hnyav thiab ua rau lub neej ua haujlwm luv luv. Kev tsis sib xws ntawm kev tso rau hauv qab -rail pads yuav ua rau muaj kev thauj khoom hnyav, ua rau cov neeg pw tsaug zog tawg thiab ballast txaj deformation, thiab nce cov nqi kho kab. Kev sib txawv ntawm lub kaum sab xis ntawm lub elastic bar yuav txo qhov elastic buffering nyhuv, ua rau kom lub suab nrov thaum lub tsheb ciav hlau hla, thiab cuam tshuam rau cov neeg caij tsheb. Tsis ruaj tsis khov ntswj anchoring yuav ua rau tag nrho loosening ntawm lub fastening system, thiab txawm rail hloov nyob rau hauv huab mob, hnyav hem kev nyab xeeb tsav tsheb, yog li installation zoo yog tus yuam sij rau lub fastening system ua hauj lwm.