1. CCTEG
CCTEG-Xian Technology Communication
Xian Research Institute of China Coal
Technology & Engineering Group
Owen Ji
ZDY4300LF Serial Drill Rig

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1.Introduction
2.Technical Specification
3. Technical Features
4. Applications
ZDY4300LF Serial Drill rig

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Underground
drill rigs
All hydraulic splitting rig
All hydraulic crawler rig
Hard to be moved in the
tunnel and roadway
Mature serial products
Drill depth range from 75m-
1000m
lower cost, cheaper
Easy to change sites
Integrated crawler
design
Large dimension
increases space require
of the roadway and
drill sites
1. Introduction

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1. Introduction
Destressing
boreholes from floor
Drivage covering borehole
Gas drainage (drill
boreholes from the
roadway under seam floor)

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1. Introduction
Drill rig requirement
 Small dimension in size especial in width
 Extensive azimuth and inclination angle adjustment
 High drill capacity (torque, feed/pull force) and efficiency
Solution
 Using splitting crawler structure to reduce each unit’s
dimension
 Special designed structure to achieve wide range of azimuth/
inclination adjustment
 Rated torque of the rig should reach 4300 Nm
 Rated pull force should reach 120kN
 High quality hydraulic components, Rexroth and Sauer

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1. Introduction
ZDY4300LF splitting crawler mounted drill rig
ZDY4300LF（A） splitting crawler mounted drill rig

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2.Technicial Specification
ZDY4300LF ZDY4300LF（A）
Rated torque 4300Nm 4300Nm
Rotary speed 60~200r/min 60~200r/min
Inclination of
the main axis
-30°~80° -90°~90°
Rated feed/pull
force
90/120kN 90/120kN
Rated power 55kW 55kW
Dimension (m)
2.17×0.85×2.1（drill unit）
2.63×0.85×1.8（pump unit）
2.30×0.85×2.1（drill unit）
2.63×0.85×1.8（pump unit）
Weight
3950kg（drill unit）
3075kg（pump unit）
4200kg（drill unit）
3075kg（pump unit）
Main technical parameters
Wonderful drill applicability
Suitable for narrow roadway/drill site
Strong drill capacity

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3.Technical Features
ZDY4300LF ZDY4300LF（A）
2.17m×0.85m×2.1m 2.30m×0.85m×2.1m
Competitive small dimension in width (drill unit)

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3.Technical Features
Competitive small dimension in width (pump station)

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electromagnetic starter tank main control panel
assistant control panel electric motor
cooler caterpillar band
3.Technical Features
Competitive small dimension width
2.63×0.85×1.8（pump unit）

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3.Technical Features
Climbing experiment
Excellent climbing ability
Rig can climb hills as slope as 15°

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3.Technical Features
①Mature Constant pressure variable displacement control system
② High quality hydraulic components（Rexroth and Sauer）
maintain system reliability
③ Linkage system and optimized pressure/flow rate control lead to
simple operation
Reliably hydraulic system

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3. Technical Features
Reliable steadiness
On the base, four hydro-cylinders
can be extended to increase the stability
On the top, two hydro-
cylinders push the roof

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3.Technical Features
Extensive adjustment range of drill azimuth, height and inclination
Drill height adjustment Drill azimuth adjustment
Drill height ranges from 1.3-2.3m
Azimuth angle ranges from -90 to +90

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3.Technical Features
Drill inclination adjustment
ZDY4300LF: ranges from -30° to +80°
ZDY4300LF(A): ranges from -90° to +90°
Extensive adjustment range of drill azimuth, height and inclination

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4. Application
(1). Luling Coal Mine, Anhui, China
Hole
No.
Azimuth
angle/°
Inclination
angle/°
Depth/
m
1# 0 40 45
2# 0 70 33
4# 0 61 36
5# 0 53 39
6# 0 46 42
8# 0 35 42
9# 0 30 59
10# 0 26 73
8 boreholes, 385m are drilled in just 4
days in experiment. Drill efficiency was
increased by more than 35% compare with
other rigs.
On-site designed borehole profile

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4. Application
(2).Huangling Coal Mine, Shaanxi, China
Hole
No.
Azimuth
angle/°
Inclination
angle/°
Depth/m Total/m
1# 75 1 140
612
2# 75 3 52.5
3# 75 -1 73.5
4# 90 -2.5 66
5# 90 0 280
Inner seam borehole drilling
5 boreholes, 612m were drilled in experiment.
The large depth reached 280m

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4. Application
(2).Huangling Coal Mine, Shaanxi, China
Hole
No.
Azimuth
angle/°
Inclination
angle/°
Depth
/m
Total
drill/m
6# 29 20 144
924
7# 25 20 132
8# 20 16 132
9# 21 14 132
10# 17 8 132
11# 15 12 132
12# 17 8 120
Roof borehole drlling
Hole
No.
Azimuth
angle/°
Inclination
angle/°
Depth
/m
Total
drill/m
13# -10 45 87
714
14# -6 52 81
15# -7 52 126
16# -6 60 153
17# -4 63 117
18# -3 69 150
Cross seam borehole drilling
Average drilling rate reaches to 30m/h

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Conclusion
Features and benifits
 Competitive small dimension in width
 Wide range of azimuth/ inclination adjustment
 Strong drill capacity (rated torque, speed and drill depth)
 Rated pull force should reach 120kN
 Excellent climbing ability
 High quality hydraulic components, Rexroth and Sauer

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Thanks for your time！
Have a good day！
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