Main technical features of Wuxin three-arm rock drilling jumbo
1. Accuracy: Fully controlled with the computer, the drilling system is capable of automatic positioning and drilling, accurately controlling the propulsion beam's angle and hole depth to minimize the over-excavation.
2. Safety: Only 3 persons are required to operate one drilling jumbo, so the workers can stay far away from the tunnel face, which makes the construction safer.
3. High-efficiency: The construction progress can be sped up as it features automatic drilling, automatic sticking prevention and high-speed single hole drilling.
4. Stability: The rock drills, main hydraulic components and chassis transmission systems are all imported well-known brands.
5. Operator-friendliness: Equipped with the fully enclosed cab, it is operator-friendly as the personal injury due to noise and dust can be minimized.
Technical parameters (subject to the latest operation manual)
Overall parameters | Model | WD310I |
Weight of whole machine (kg) | 47000 | |
Dimensions (mm) | 17060*2930*3700 | |
*Operation range (width × height, m) | 16×11 | |
Turning radius (mm) | Outer 11900/inner 6300 | |
*Maximum coverage area (m2 ) | 195 | |
Minimum tunnel height (m) | 4.5 | |
Rock drill | Model × quantity | YHD210×3 |
System pressure (bar) | 180MAX | |
*Impact power (kW) | 18.4 | |
Impact hydraulic oil pressure (bar) | 180 | |
Impact frequency (BPM) | 2500 | |
Rotary hydraulic oil pressure (bar) | 150 | |
Rotating torque (N·m) | 540 | |
Rotating speed (r/min) | 100～180 | |
Flushing water pressure (bar) | 8～15 | |
Mass (kg) | 180 | |
Drill arm | Model × quantity | TB6125×3 |
Control mode | Full computer | |
Coverage area (m2) of single arm | 154 | |
Telescopic stroke (mm) (drill arm + propulsion beam) | 2500 | |
Rotation and elevation angle (°) | Left and right ±45°/Pitch -30° ~ +60° | |
*Lubrication mode | Automatic lubrication | |
Propulsion beam | Model × quantity | TF7124×3 |
Propulsion type | Cylinder-Wire rope | |
Total length of propulsion beam (mm) | 7180 | |
Maximum propulsion (kN) | 20 | |
Drill pipe length (mm) | 5525 | |
Diameter of drill pipe (mm) | Drilling diameter: 33~43, model of drill pipe: H25; Drilling diameter: 43~108, model of drill pipe: H35 | |
*Drilling depth of primary propulsion (mm) | 5200 | |
*Maximum drilling depth for connecting rod drilling (m) | 30 | |
Flip angle (°) | 380° | |
Swing angle (°) | 270° | |
Lifting angle (°) | 90° | |
Working platform | Model × quantity | MB7177 |
Working range (width x height,mm) | 20×12 | |
Lifting force (KN) | 500 | |
Control mode | Computer control | |
Telescopic length (mm) | 7700 | |
*Roof | FOPS protection | |
*Lubrication mode | Automatic lubrication | |
Chassis | Model/Manufacturer | Wuxin |
Travel speed (km/h) | 15 | |
*Gradeability (%) | 26.8 | |
Ground clearance (mm) | 400mm | |
Maximum ground pressure in motion (MPa) | 0.5 | |
Maximum ground pressure in operation (MPa) | 0.6 | |
Minimum inner radius of gyration (mm) | 6300 | |
Minimum outer radius of gyration (mm) | 11900 | |
Wheelbase of front and rear wheels (mm) | 4400 | |
Front/rear track (mm) | 2080/2300 | |
Front/rear tire model × quantity | 14.00-R24×6 | |
Capacity of fuel tank (L) | 120L | |
Maximum width of extended outriggers (mm) | 4550 | |
Outrigger cylinder bore-rod diameter (mm) | 125/100 | |
Travel camera | Available | |
*Lubrication mode | Automatic lubrication | |
Hydraulic system | Hydraulic control mode for drilling | Electric proportional load sensitivity |
Model/manufacturer of motor | YE2-250M-4 | |
Motor power (kW) × quantity | 55×3 | |
Model/manufacturer of main hydraulic oil pump | Rexroth | |
Rated pressure of main hydraulic oil pump (bar) | 210 | |
Rated pressure of auxiliary hydraulic oil pump (bar) | 210 | |
Capacity of hydraulic oil tank (L) | 800 | |
Air system | Type of air compressor | Screw type |
Model/manufacturer of air compressor | VS/Suteng MATTEI | |
Displacement (m3/min)/pressure (bar) | 2/0.8 | |
Air consumption (L/min) | 200 | |
Oil consumption at bit shank (g/min) | 2 | |
Water system | Model/manufacturer of booster pump | KQDP/KAIQUAN |
Booster pump power (kW) | 11 | |
Rated displacement (L/min) | 80～150 | |
Rated pressure (bar) | 10 | |
Water pressure during drilling (bar) | 8～15 | |
Electrical system | Models/manufacturers of main electrical components | IFM |
Total input power (kW) | 220 | |
Voltage (V)/frequency (Hz) | 380V/55Hz | |
Start mode | Star Delta | |
Protection system | Phase sequence and overload protection | |
Control system | Control type of rig system | Computer controlled/computer based |
Control type of drill arm | Manual/semi-automatic/automatic |