Cov yam ntxwv ntawm tus yam ntxwv thiab Precision Requirements ntawm Ballastless Track Fastening System
Dab tsi yog qhov txawv ntawm qhov sib txawv ntawm ballastless track fasteners thiab ballasted track fasteners?
Ballastless track foundations yuav luag tsis muaj kev sib haum xeeb thiab tsis nqus kev co; Yog li ntawd, cov fasteners yuav tsum ua kom tiav tsib lub luag haujlwm tseem ceeb: siab - kev hloov kho qhov tseeb, elastic vibration damping, rwb thaiv tsev, tiv thaiv rau sab nraud, thiab ntev - lub sijhawm ruaj khov. Ballasted track fasteners feem ntau muab kev txhawb nqa elastic thiab kho, nrog cov kev xav tau qis dua rau kev hloov kho ntau yam thiab qhov tseeb ntawm qhov chaw. Ballastless track fasteners feem ntau siv ua ke ntawm cov hlau puag daim hlau, cov ntaub qhwv elastic, cov khoom siv rwb thaiv tsev, thiab qhov siab / rau pem hauv ntej / rov qab kho cov qauv, ua tiav qhov raug hloov mus rau millimeter lossis sub-millimeter qib. Ballasted track fasteners, ntawm qhov tod tes, feem ntau siv cov qauv elastic clamping yooj yim, tso siab rau cov ntaub qhwv roj hmab thiab ballast tamping rau kev hloov kho.
Yuav ua li cas qhov siab, pem hauv ntej / rov qab, thiab kev hloov kho sab nraud ntawm ballastless track fasteners siv?
Kev kho qhov siab feem ntau ua tiav los ntawm kev ntxiv qhov siab - kho shims ntawm txawv thicknesses nyob rau hauv lub hauv paus hlau phaj. Cov kev hloov kho feem ntau yog 0-20mm, nrog rau kev hloov kho kom haum raws li qhov kev tsim kho slab yuam kev thiab tom qab raug nplua -tuning. Longitudinal adjustment cia siab rau lub bolt qhov los yog tshwj xeeb zawv zawg pads kom haum raws li rail expansion thiab contraction thiab longitudinal rog. Kev hloov kho tom qab (gauge) yog ua tiav los ntawm kev ntsuas cov blocks, lub tes tsho eccentric, thiab kho tau qhov chaw thaiv, ua tiav qhov ntsuas qhov tseeb ntawm ± 0.5mm, ua tau raws li qhov ntsuas ntsuas qhov tseeb ntawm cov tsheb ciav hlau ceev. Tag nrho cov kev hloov kho tiav ua tiav qhov chaw ntawm qhov chaw ntawm cov ntsia hlau thaum tuav elasticity thiab rwb thaiv tsev.
Vim li cas cov kev ua tau zoo ntawm cov ntaub qhwv elastic nyob rau hauv ballastless track fasteners tshwj xeeb tshaj yog nruj?
Ballastless khiav muaj siab zuag qhia tag nrho. Yog hais tias qhov nruj ntawm cov txheej txheej fastener tsis tsim nyog, nws yuav ua rau muaj kev nce ntxiv hauv lub log -rail cuam tshuam quab yuam, muaj zog vibration thiab suab nrov, thiab ua kom lub cev muaj zog. Lub ncoo txheej yuav tsum tau ua raws li cov kev cai hauv qab no: tsim nyog zoo li qub thiab dynamic rigidness piv, me me dynamic deformation, tsis tshua muaj compressive mus tas li deformation, thiab zoo heev qaug zog tiv thaiv, kev laus tsis kam, thiab hydrolysis kuj. Nyob rau hauv lub sij hawm ntev - lub sij hawm siab - lub tsheb ciav hlau zaus loads, lub ncoo txheej yuav tsum tsis txhob qhia tseem ceeb softening, hardening, cracking, los yog spalling; txwv tsis pub, nws yuav ua rau txo qis kev tsheb ciav hlau nto smoothness, xoob fasteners, thiab kev ntxhov siab tsis sib xws ntawm txoj kab slab. Yog li ntawd, hloov kho cov roj hmab, polyurethane, thiab lwm yam siab - cov ntaub ntawv elastic ua tau zoo yog feem ntau siv, thiab cov ntaub ntawv no tau raug txheeb xyuas los ntawm ntau lab qhov kev sim qaug zog.
Vim li cas kev rwb thaiv tsev ntawm ballastless track fasteners tseem ceeb dua li cov lem ballasted?
Ballastless lem yog tag nrho cov pob zeb ua vaj tse, nrog cov conductivity deb tshaj li cov ballasted lem. Yog hais tias lub rwb thaiv tsev fastener tsis ua hauj lwm, cov dej xau ntawm txoj kev tsheb ciav hlau thiab cov tsheb ciav hlau tuaj yeem tshwm sim tau yooj yim, cuam tshuam ncaj qha rau cov kab hluav taws xob, cov khoom siv hluav taws xob, thiab tsheb ciav hlau tswj cov ntaub ntawv xa mus, ua rau muaj qhov tshwm sim loj xws li lub teeb liab flashes, lub tsheb ciav hlau tsis zoo, thiab tsheb ciav hlau nres. Yog li ntawd, ballastless fasteners muaj ntau insulating Cheebtsam thiab ntau dua rwb thaiv tsev. Cov txheej txheem rwb thaiv tsev tseem ceeb siv ntau- txheej txheej rwb thaiv tsev, xav tau cov rwb thaiv tsev siab txawm tias nyob rau hauv cov xwm txheej hnyav xws li av noo, nag, plua plav, thiab roj paug, thiab xyuas kom lawv tsis muaj hnub nyoog lossis tawg ntev dua - siv sijhawm.
Dab tsi yog cov ntsiab lus tseem ceeb rau kev tsim kho thiab kev saib xyuas ntawm ballastless fasteners?
Cov ntsiab lus tseem ceeb thaum lub sij hawm tsim kho: Xyuas kom cov kab slab raug kho kom raug, qhov kev sib dhos sib dhos ua ke yog qhov tseeb, ntsia liaj qhov rooj torque nruj me ntsis raws li cov qauv, tsis txhob cuam tshuam cov insulating Cheebtsam nrog cov khoom tawv, thiab tiv thaiv mortar los yog pob zeb sib kis ntawm cov fasteners. Cov ntsiab lus tseem ceeb thaum lub sijhawm ua haujlwm thiab kev saib xyuas: Tsis tu ncua xyuas lub zog torque attenuation, elastic pad mob, rwb thaiv tsev tsis kam, thiab ntsuas qhov hloov pauv; tam sim ntawd ntxuav cov khib nyiab thiab cov dej ntau ntxiv; txwv tsis pub arbitrary hloov pads ntawm txawv specifications; ua kev ntsuam xyuas cov qauv rau cov ntu nrog kev kho qhov siab ntau dhau; thiab nce qhov zaus ntawm kev tshuaj xyuas nyob rau hauv cov cheeb tsam uas muaj kev ntxhov siab, xws li turnouts, kev hloov pauv, thiab txuas txuas txuas txuas txuas ntxiv, txhawm rau tiv thaiv kev ua tsis tiav ntxov ntawm lub kaw lus fastener.