KT8 integrated surface DTH drilling rig is efficient and energy-saving advanced drilling equipment which is developed carefully for small and medium opencast mining, quarry and infrastructure construction project. It both inherits advantages of KT7 drilling rig and injects new design philosophy.

1. The overall layout is more reasonable, easy to maintain.

2. Using Cummins 6CTA8.3-260 diesel engine replaced Yuchai YC6A260Z-20, big Capacity and torque reserve can provide more power support in harsh environments.

3. Hydraulic use a relatively independent multi-pump system, cancel diverter valve, more stable.

4. Equiped 13/17 single-stage high-pressure compression screw system by Dr. Tang Yan, compared with mieda wind pressure interated drilling rig made by other manufacturers, it has an overwhelming advantage.

5. Using rocker - link boom system increases the luffing angle, to meet the various needs of different stations working conditions, low level of play hole; carriage arranged laterally to make work better field of vision.

6. Cylinder - plate chain propulsion system consisting of a two-speed motor and two-speed dual circulator to meet different application requirements.

7. The drilling rig is low center of gravity and balanced distribution, with heavy "Four Wheels" and there are 19 ° and automatic leveling device can be independently controlled double locking system, and the frame has a ± 10 ° automatic leveling device, walking safe and stable.

8. 8.The drilling rig equiped a high efficiency two-stage dry dust collection system, greatly improve the working environment, meets the energy saving, environmental protection concept.

Technical Parameters of KT8 Integrated Surface DTH Drilling Rig

Rock rigidity	f=6-20
Drilling diametermm	90-105
Economic drilling depth (m)	30
Travel speed Km/h	2．5
Climbing capacity	25°
Ground clearancemm	430
Total Power kW	194
Diesel	Cummins6CTA8.3-C260-Ⅱ
Capacity of screw compressor m3/min	13
Discharge pressure of screw compressor bar	17
Dimensions (long×width×high)mm	8000×2300×3000
Weight Kg	9600
Rotation speed (Two-Speed)r/min	0-60, 0-120
Rotary torque N*m	1900
Max. feed force N	25000
Boom lift	Up54° down26°
Guide tilt	147°
Guide swing	Right47° left47°
Lateral horizontal guide swing	Right-19°～97°
Boom swing	Right53° left53°
Frame balance angle	Up10° down9°
Feed length at a timemm	3000
Compensation lengthmm	900
Hammer	35A
Drill rod	φ64×3000mm
Dust catching method	Dry-type (hydraulically driven whirlwind layer flow type)

	KT8	KT7	Remark
Power	Cummins6CTA8.3-260	YuchaiYC6A260Z-20	Large Capacity and torque reserve
Guide	Lining plate reinforced carriage Wear reducing press plate Double rotary motor	Steel channel guide Single rotary motor	Reinforced rigidity and reduced wear
Drill boom	Drill boom system of rocker and connecting rod		Larger amplitude angle Wider view
Hydraulic system	Multi-pump independent system	Double pump+ flow divider	More stable