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LDJ400 Series Multifunction Tunnel Boring Machine

A specialized piece of equipment designed for 5.8 to 8-meter tunnel excavation, integrating high-frequency rock breaking, fast excavation in soft soil, contour trimming, and dust suppression via spraying. During operation, it uses a high-frequency hammer or breaker hammer for rock breaking, bucket teeth or chisels to wedge into the surrounding rock for prying, and utilizes the gravity effect on the free face below the surrounding rock for automatic rock breaking. This effectively controls over- and under-excavation and reduces occurrences of collapses.

Description

  Excavation efficient: Comprehensive excavation efficiency for grade IV and V surrounding rocks up to 50m³/h;

  Slight turbulence to surrounding rock: Non-explosive excavation method causes little disturbance to surrounding rock;

  Precise over- and under-excavation control: The movement of the entire machine is accurately controlled, with over- and under-excavation of the contour surface

controllable to within 20 centimeters;

  Spray dust removal: The entire machine is equipped with dust removal spray  system to effectively control dust and ensure a safe construction environment;

  High-frequency rock breaking: Patented three-toothed base or two -toothed base and a high-frequency breaker hammer to achieve fast rock breaking speed and strong impact;

  Remote control: All movements of the entire machine are controlled remotely, making it easy and convenient to operate. The operator can flexibly adjust the   position for more convenient operation;

  Diesel-electric dual power system: Diesel-powered emergency and transmission, and electric construction are supported, minimizing construction costs; no exhaust gas pollutes the air in the tunnel and heat accumulation is kept to a minimal level    during construction;

  Slag discharge efficient : Some models are equipped with slag collecting and slag    discharging devices, with a slag discharge capacity of 180m³/h, which can meet the    needs of small-section equipment for rapid slag discharging without leaving the site.

LDJ400A

 

Model LDJ400A-1 LDJ400A-2 LDJ400A-3 LDJ400A-4
Transport dimensions     (length × width × height) 16000×3000×3600mm 16000×3000×3600mm 16000×3000×3600mm 16000×3000×3600mm
Total weight 82t 82t 82t 82t
Engine power 176kW 176kW 176kW 176kW
Installed electrical power 400kW 400kW 400kW 400kW
Operating mode Electric construction +diesel-powered emergency Electric construction +diesel-powered emergency Electric construction +diesel-powered emergency Electric construction +diesel-powered emergency
Control mode Wireless remote control + manual control Wireless remote control + manual control Wireless remote control + manual control Wireless remote control + manual control
Operating voltage 1140V 1140V 1140V 1140V
Operating range  (width × height) 12×10m 12×10m 12×10m 12×10m
Slag discharge function / / / /
High frequency hammer model H5 H8 H10 H12
Operating speed 1.5km/h 1.5km/h 1.5km/h 1.5km/h
Adjustable cross-section height 6~9.5m 6~9.5m 6~9.5m 6~9.5m
Adjustable cross-section width ≥6m ≥6m ≥6m ≥6m
Excavation efficiency 0~35m³/h 0~50m³/h 0~60m³/h 0~70m³/h
Slag discharge efficiency / / / /

LJD400B

LDJ400B series
Model LDJ400B- 1 LDJ400B- 2
Transport dimensions  (length × width × height) 16000×3000×3200mm 16000×3000×3200mm
Total weight 82t 90t
Engine power 410kW 410kW
Installed electrical power / 400kW
Operating mode Diesel-powered construction Electric construction + diesel-powered construction
Control mode Wireless remote control + manual control Wireless remote control + manual control
Operating voltage / 1140V
Operating range (width × height) 12×10m 12×10m
Slag discharge function / /
High frequency hammer model H8 H8
Operating speed 1.5km/h 1.5km/h
Adjustable cross-section height 6~9.5m 6~9.5m
Adjustable cross-section width ≥6m ≥6m
Excavation efficiency 0~50m³/h 0~50m³/h
Slag discharge efficiency / /

LDJ400C

 

Model LDJ400C
Transport dimensions  (length × width × height) 16000×2800×3200mm
Total weight 95t
Engine power 210kW
Installed electrical power 400kW
Operating mode Electric construction + diesel powered emergency
Control mode Wireless remote control + manual control
Operating voltage 1140V
Operating range (width ×height) 12×10mm
Slag discharge function
High frequency hammer model H8
Operating speed 1.5km/h
Adjustable cross-section height 6~9.5m
Adjustable cross-section width ≥6m
Excavation efficiency 0~50m³/h
Slag discharge efficiency 180m³/h

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