Lub cutterhead yog ib qho tseem ceeb ntawm lub tshuab tiv thaiv; Thaum lub sij hawm tunneling txheej txheem, nws ua haujlwm ntawm crushing pob zeb thiab av, ua kom yooj yim rau cov av nkos, thiab muab kev txhawb nqa rau lub ntsej muag tunnel.
Mechanical Structure
Tam sim no, shield tshuab cutterhead cov qauv feem ntau poob rau hauv peb pawg: hais-hom, disc- hom, thiab cov qauv sib xyaw ua ke ua ke ob qho tib si spokes thiab discs. Loj thiab nruab nrab- qhov loj me me shield tshuab cutterheads feem ntau siv lub hauv paus kev txhawb nqa. Tus nqi dhau ntawm tus nqi- qhov feem ntawm cov cutterhead qhib cheeb tsam- yog kwv yees li 67% rau kev hais lus- hom cutterheads thiab 33% rau disc- hom cutterheads.
Cov khoom siv txiav thiab cov cuab yeej tseem ceeb
Cov "cov hniav" ntawm lub tshuab tiv thaiv yog cov cutters mounted rau nws pem hauv ntej -kawg cutterhead. Ntawm qhov chaw ua hauj lwm ntawm cov cutters no - qhov twg ncaj qha "kev sib cav" nrog pob zeb yuav tsum tau siv - tawv alloys yog siv; cov ntaub ntawv no muaj ib tug hardness thib ob tsuas yog cov pob zeb diamond. Shield tshuab cutters yuav tsum muaj cov hardness txaus los xyuas kom meej hnav tsis kam, muaj zog txaus los tiv thaiv kev puas tsuaj, thiab txaus toughness los tiv thaiv cov quab yuam. Ib qho tseem ceeb ntawm qhov kev txiav txim siab no lub zog thiab toughness yog kev tswj xyuas meej ntawm cov nplej loj thaum npaj cov hmoov tungsten carbide. Advanced technologies nyob rau hauv daim teb no tso cai rau zus tau tej cov WC (tungsten carbide) nplej nrog loj npaum li cas zoo li 9 micrometers. Lwm yam tseem ceeb tshaj technologies muaj xws li tshiab multi- teb, multi- nplai tswj brazing cov tswv yim featuring ultrasonic thiab nano{11}} hloov kho cov khoom siv ntxiv, nrog rau cov txheej txheem tshiab laser additive manufacturing rau siab - carbon, siab - hardness disc cutters.
Pab txhawb thiab txawj ntse Systems
Lub nplhaib ntawm hydraulic jacks yog nyob tom qab lub taub hau ntawm lub tshuab tiv thaiv. Kev sib xyaw ua npuas dej yog txhaj tshuaj los pab txhawb lub taub hau kev ntxhov siab ntawm pob zeb thiab ua kom cov av soften, yog li txo qhov nyuaj ntawm kev ua haujlwm tunneling. Niaj hnub nimno cutterhead configurations feem ntau feature designs optimized rau hauv av mos, incorporating lub peev xwm rau atmospheric-pressure cutter hloov. Lub cutterhead yog txawm peem rau nrog sensing ntsiab muaj peev xwm saib xyuas cov kev ua hauj lwm ntawm cov cutters nyob rau hauv lub sij hawm. Los ntawm kev ua kom lub taub hau qhib qhov sib piv, kev sib koom ua ke siab - siab, siab - ntws hauv nruab nrab cov dej ntws tawm, thiab siv lub taub hau "muck-caking" ceeb toom ntxov- ntxiv los ntawm cov cuab yeej siv lub koob yees duab retractable- nws muaj peev xwm soj ntsuam cov xwm txheej nyob rau hauv lub cutterhead's chamber ua hauj lwm nyob rau hauv lub siab.
