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    OUR MISSION IS BEING WITH YOU TILL BREAK THROUGH
    Project location : Iran, Mashhad
    Year of construction : 1396
    Application : Metro
    Employer : Mashhad Urban Train Organization
    Device type : EPB-MTU042
    Device diameter : 9.4 meters
    Manufacturer : NFM - NHI
    Year of construction : 2011
    TunnelSazMachine Company Activities

    – Full Dissembling of main drive,
    – Performing health tests of various components of main bearing of TBM
    – Accurate measurement of abrasion and permissible tolerance of main bearing,
    – Full Dissembling of sealing part of main drive,
    – Repair & refined of main drive ring speed and full amendment of wears and corrosion of sales seat place,
    – Complete disassembly, repair and assembly of main drive gearboxes and electro motors,
    – Performance test of bearings, pinions and main gear,
    – Complete main drive assembly and final rotation test,

    Cutter head basic changes consists of:
    – Redesigning some parts of the Cutter head and increase the Cutter head opening,
    – Changing and redesigning the layout of gauge cutting tools and buckets,
    – Designing and modifying the rotary coupling from 8 routes to 12,

    Re-designing and modifications of the foam system include:
    – Redesigning and changing the layout of foam piping paths and increase foam nozzles,
    – Designing of foam nozzles divider block
    – Designing a new foam generator

    Jet Wash system design to deal with cutter head blockage
    – Calculation and designing of circuit with complete specifications of required equipment,
    – Designing of Jet Sprayer Nozzles inside of chamber,

    Project Description

    Full Dissembling of main drive,
    Performing health tests of various components of main bearing of TBM,
    Accurate measurement of abrasion and permissible tolerance of main bearing,
    Full Dissembling of sealing part of main drive,
    Repair & refined of main drive ring speed and full amendment of wears and corrosion of sales seat place.