ZQLC2 Pneumatic Rotary Drilling Rig for Coal Mine

Upgraded Air-Powered Drilling Machine with Enhanced Performance

Product Overview

The ZQLC2 Pneumatic Rotary Drilling Rig is an upgraded version of the ZQLC series, designed for high-efficiency drilling operations in underground coal mines.

Powered by compressed air, the machine ensures explosion-proof safety while delivering enhanced torque, higher efficiency, and improved durability. It is widely used for gas drainage, roof bolting, and geological exploration.

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The ZQLC2 Pneumatic Rotary Drilling Rig is a new generation of self-propelled crawler drilling rig, mainly used for geological structure exploration of coal seams, water exploration and drainage, gas drilling, coal seam water injection, and pressure release drilling.

This drilling rig uses compressed air as power to achieve functions such as overall machine movement, main unit support, lifting, feeding, and drill rod rotation. The pneumatic drilling rig's rotary support structure allows the main unit to rotate 360° in the horizontal plane, and the lifting cylinder allows the main unit to drill at different heights. Dual power heads can drill simultaneously, improving work efficiency.

This drilling rig features explosion-proof safety, high torque, high speed, high efficiency, simple structure, convenient operation, and time, labor, and manpower savings. Therefore, this drilling rig offers high operating efficiency, good support quality, low labor intensity for workers, and low drilling costs, making it an essential piece of equipment in the coal mining industry.

Our company's dual-arm pneumatic crawler drilling rig uses compressed air as power, operating in a purely pneumatic mode during drilling. It boasts high drilling efficiency, explosion-proof safety, and convenient operation. During movement and drilling, a pneumatic motor drives a hydraulic pump station to provide power for the tracked movement, slewing bearing, hydraulic cylinders, and other hydraulic components. The drilling rig has a central sliding rail, allowing for multiple drilling operations with a single movement. It also features two independent columns and drilling heads, enabling simultaneous drilling and improving work efficiency. The drilling rig's movement, drilling stability, and adjustments to drilling height and angle are all automated, making operation simple and quick, reducing worker fatigue, and significantly improving work efficiency.

Key Features

1. Upgraded Pneumatic Drive System (Core Advantage)

Optimized air circuit design
Higher power output
Improved energy efficiency

2. Explosion-Proof & High Safety

No electrical components
Eliminates spark risk
Ideal for high-gas underground environments

3. Higher Efficiency & Output

Increased torque and rotation speed
Faster drilling performance
Suitable for continuous operation

4. Compact & Portable Design

Lightweight structure
Easy to handle and transport
Suitable for narrow working spaces

5. Stable and Reliable Performance

Smooth operation
Durable components
Long service life

Applications

Gas drainage drilling
Roof bolting hole drilling
Geological exploration
Underground borehole operations

Typical Technical Specifications

Items			Unit	ZQLC2-700/11.7S			ZQLC2-550/11.2S
Working Pressure			MPa	0.40	0.50	0.63	0.40	0.50	0.63
Rated Torque			N · m	680	700	800	500	550	600
Rated Speed			r/min	155	160	165	190	195	200
Rated Power			kW	11.0	11.7	13.8	9.9	11.2	12.5
Maximum Load Torque			N · m	1000	1100	1200	700	800	900
Power Starting Torque			N · m	1100	1200	1300	750	850	950
Power Stall Torque			N · m	1200	1300	1400	800	900	970
Air Consumption			m³/min	13	14	15	10	11	12
No-Load Speed			r/min	350	400	450	400	410	420
Guide Rail Length			mm	2020±20
Guide Rail Stroke			mm	1200±20
Thrust Force			kN	25
Maximum Working Height			mm	1560±20
Minimum Working Height			mm	1210±20
Flushing Water Pressure			MPa	0.6-1.2
Machine Weight			kg	2700
Drilling Speed			Mm/min	300
Dimensions			mm	3350×900×2150（±50）
Traveling Mechanism	Traveling Method		—	Tracked
	Drive Mechanism Type		—	hydraulic motor
	Traveling Speed		m/min	13
	Climbing Ability		（°）	±16
	Braking Method		—	Built-in friction pads; fail-safe type
	Hydraulic System Working Pressure		MPa	10
	Track Shoe Width		mm	250
	Air Motor	Working Pressure	MPa	0.5
		Air Consumption	m3/min	10
	Oil Pump	Type	—	Gear oil pump
		Rated Pressure	MPa	16
		Displacement	ml/r	40
Operating Table	Dimensions		mm	（420×480×550）±20
	Weight		kg	30

Key Advantages for Buyers

✔ Upgraded performance over standard ZQLC
✔ Explosion-proof and safe
✔ Higher drilling efficiency
✔ Lightweight and easy to operate

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We provide reliable and cost-effective bolting solutions for global mining customers.

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