Pre-Tunnelling Equipment

YQC7000 Center Shaft Pre-Tunnelling Machine

YQC7000 Center Shaft Pre-Tunnelling Machine

YQC7000 center shaft Pre-tunnelling Machine is one of core equipments used in tunnel construction. It consists of cutter assembly, arch assembly, travel assembly, concrete injection assembly, back-up system, electric system and hydraulic system, together with pre-tunnelling, synchronous injection, self-travel, rotating, adjusting of cutting in angle & radius & depth and self-diagnoses. It operates in equipped with special cutter to shape a groove in certain thick and depth, meanwhile, by means of jet sprayer to form a concrete shell in supporting the tunnel face. And the construction of excavation work, muck transport, arch inverting, lining and waterproof can be safely executed under the intensified shell. The equipment is excellent of safety, anti-settlement, anti-vibration, productivity and lower cost.





ItemsUnitsSpecificationsItemsUnitsSpecifications
Depth of pre-cuttingmm0-8000Ground distance to central axlemm2190-2780
Thickness of groovingmm350Stroke in cable boxm100
Cutting ratem/min0-85Distance to track centermm4100
Max. deflect angle of cutterº0-7Length of track on groundmm5090
Rock compressive resistanceMPa≤40Width of track padmm900
Axle rotating angleº0-210Grade abilityº0-5
Axle rotating speedr/min0-0.11Traveling speedKm/h0-1.4
Cutting radiusmm5650-7320Power ratekW500
Travel ground pressurekpa212Work ground pressurekpa84
Operating Voltagev10000/400Hydraulic powerMPa35
Dimensions (LxWxH)m24.5x7.5x7.2Total weightkg195000
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