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Kaishan KT20 integrated surface DTH drilling rig is a new drilling device which is carefully designed for large open-pit mine based on our development and production of DTH drilling rigs for many years. The drilling rig is hydraulically driven to complete walking, propelling, rotation and angle adjustment with strong power; The drilling rig is equipped with high pressure screw compressor head and high pressure pneumatic hammer to generate high drilling efficiency; it is also equipped with hydraulic dry type dust collector to collect dust, so as to reduce pollution to the environment; The drilling rig features good integrity, high level of automation, high drilling performance, environmental protection and energy saving, easy operation, flexibility and safe driving, etc.

1. Disc type auto rod-loading system is used and auto rod-loading can reach the depth of 35m.

2. Equipped with amplitude mechanism, the carriage has total swing angle of 130° (97° to the right and 33° to the left) to freely complete horizontal and vertical holes transition without changing pivot. The lowest elevation horizontal hole is 550mm and the highest elevation is 4,200mm.

3. It adopts Caterpillar electronic fuel injection engine to provide high power and reliable performance.

4. Single engine with two-end output is configured to provide compact structure and convenient maintenance.

5. High wind pressure large-Capacity air compression system (22m³/min, 20bar) guarantees fast drilling of the hammer.

6. Automatic leveling function of the travelling mechanism enables the drilling rig to be more adapted to rugged mountain roads in the mine.

7. Double rod lifting mechanism guides the rig all the way to prevent deflection in the drilling process (It guides the hammer during trepanning and the drill rod during drilling).

8. The drilling rig adopts imported hydraulic parts and electric appliance.

Technical Parameters of KT20 Integrated Surface DTH Drilling Rig

Rock rigidity	f=6-20
Drilling diametermm	135-190
Economic drilling depth(Auto Post Depth)m	35
Travel speed Km/h	3.0
Climbing capacity	25°
Ground clearancemm	430
Total Power kW	287
Diesel	卡特C11
Capacity of screw compressor m3/min	22
Discharge pressure of screw compressor bar	20
Dimensions (long×width×high)mm	11500×2716×3600
Weight Kg	23000
Rotation speed r/min	0-118
Rotary torque N*m	4100
Max. feed force N	65000
Guide tilt	125°
Guide swing	Right97° left33°
Boom swing	Right42° left15°
Boom lift	Up42° down20°
Frame balance angle	Up10° down10°
Feed length mm	4500
Compensation length mm	1200
Hammer	55A/65A
Drill rod	φ102×5000mm
Dust catching method	Dry / wet (optional)
Rod loading method	Auto rod-loading
Automatic anti-sticking method	Electro-hydraulic control to prevent sticking
Lubrication method of drill rod	Automatic splash lubrication
Drill rod thread protection	Equipped with float joint to protect the drill rod thread
Drilling display	Real-time display of drilling angle and depth