The KG420B down the hole drill rig for open use is an improved device in compliance with national regulations on diesel engine emissions. Equipped with the Yuchai four-cylinder engine (China III), the drill rig meets national standards for emissions and environment.
The folding frame track, four-wheel drive and tramming motor of plunger piston improve
the working pressure and climbing
capacity. The expanded pitch and lifting-arm hydraulic cylinder enable it to meet the
requirements on extreme position.
The double-motor rotation increases the rotary torque and revolving speed; and the
lifting hydraulic cylinder and chain
are expanded to promote the lifting force and reliability.
The thickened profile folder is used for the housing, thus improving its level of
intensity and rigidity; and the
additional ring makes handling and lifting convenient.
Powerful Rotary Head, Cycloid rotation double motor for powerful rotation torque. Bigger
and stronger designed rotation
head for smooth high torque output and less drill tool jamming with seamless speed
regulation.
Hydraulic System, The hydraulic system is upgraded,the hydraulic cylinder is more
reliable, the system flow is
increased, and the rotary drilling speed is increased.
Enlarged Dry Type Dust Collector, KG420BH, KG420TH is with Dust Collector. It is
Hydraulic Cyclonic Laminar Flow. Reduce
dust and protect workers health. Reduce air pollution and protect the atmospheric
environment.
Control Panel, All controls integrated on the control panel for convenient operation by
single operator, higher work
efficiency and lower drilling cost, safer and more comfortable operation.
Walking Hydraulic Motor, Dual-speed tramming plunger hydraulic motor. Low noise, high
efficiency, long service-life,
high power, easy maintenance.
Construction Steel Crawler, Equipped with speed reduction tramming system and standard
excavator track for compact
structure. Excellent off-road performance with powerful two-speed hydraulic tramming
system for extreme low failure
rate.
| Model | KG420B | KG420BH |
|---|---|---|
| Transport dimension (mm) | 5500x2250x2350 | 5600x2450x2350 |
| Weight (kg) | 4150 | 4350 |
| Rock hardness | f=6-20 | |
| Drilling diameter (mm) | 90 to 130 | |
| Depth of economical drilling (m) | 25 | |
| Roatory speed (rpm) | 0 to 140 | |
| Rotary torque (Max) N.m | 2000 | |
| Lifting force (KN) | 25 | |
| Propulsion way | Oil cylinder + flat chain | |
| Feed stroke | 3780mm | |
| Travelling speed (km/h) | 0 to 2.5 | |
| Climbing capacity | ≤30 degree | |
| Ground clearance (mm) | 280 | |
| Tilt angle of beam | Down 135 degree, up 50 degree, total 185 degree | |
| Swing angle of boom | Left 100 degree, Right 45 degree, total 145 degree | |
| Pitch angle of drill boom | down 50 degree, up 25 degree, total 75 degree | |
| Swing angle of drill boom | Left 44 degree, Right 45 degree, total 89 degree | |
| Leveling angle of track | ±10 degree | |
| Compensation length of beam | 900 mm | |
| Supporting power | Yuchai YC4DK80-T302 | |
| Rated power | 58 KW | |
| Rated revolving speed | 2200 rpm | |
| DTH hammer | 3 inch, 4 inch | |
| Drilling rod | ф64*3 m, ф76*3 m | |
| Air consumption | 10 to 17 cubic meter/min | |
| Maximum height of horizontal hole | 2750 mm | |
| Minimum height of horizontal hole | 350 mm | |