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AT Series Patio Drilling Rig
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AT Series Patio Drilling Rig

The AT series includes AT1000 (depth 150 m, aperture 1 m); AT1500 (depth 200 m, aperture 1.5 m); AT2000 (depth 400 m, aperture 2 m); AT3000 (200 m depth, aperture 3 m).

AT Series Reverse Drilling Rigs :
The AT series reverse rig was developed based on the experience of domestic, internal and external reverse pit (patio) rigs, and the technical achievements of China's vertical well drilling. It is technically at the domestic leading level and reached the same type of foreign machines in the 1990s. Type of advanced level.
AT series reverse rig specifications:
ZFY1.2 / 30/150 (AT1200), ZFY1.4 / 40/200 (AT1400),
ZFY1.5 / 35/200 (AT1500), ZFY1.8 / 40/250 (AT1800),
ZFY2.0 / 50/200 (AT2000), ZFY2.5 / 105/200 (AT2500),
ZFY3.0 / 120/200 (AT3000), ZFY3.5 / 150/400 (AT3500)
And other specifications, have been mass-produced.
ZFY series reverse well drilling rigs (AT series patio drilling rigs) are the national “seven and five” key scientific and technological research projects, won the first prize of the Ministry of Coal Science and Technology Progress Award, and were approved by the National Quality Review Committee in 1991, and won the “National "Quality Award", and was listed as "National Top 100" projects of new technology and new products.
ZFY1.2 / 30/150 (AT1200), ZFY1.4 / 40/200 (AT1400), ZFY1.8 / 40/250 (AT1800), ZFY2.5 / 105/200 (AT2500) type backwell drilling rig (AT series Patio drilling rigs) have passed the national "Coal Mine Product Safety Mark" certification and obtained a certificate issued by the National Mine Product Safety Mark Center.
The products have been widely used in coal mines, metal mines, water conservancy and hydropower projects, etc., and have been well received by customers, and have achieved good economic and social benefits.
Structure and working principle of ZFY series reverse well drilling rig (AT series patio drilling rig)
Structure of ZFY series reverse well drilling rig (AT series patio drilling rig)
ZFY series reverse well drilling rigs (AT series patio drilling rigs) generally include two major parts: host part and drilling tool part.
Host part
The main part includes the frame, hydraulic pump station and operation control system. The frame is a frame structure with a power water faucet inside. The power water faucet moves up and down along the slide rail in the frame under the action of a hydraulic oil cylinder. The hydraulic pump station and operation control system are used to drive the rig and control the working conditions of the rig. In order to achieve different conditions, different drilling process requirements.
Drilling part
The drilling tool part includes a hole drill pipe, a stable drill pipe, an ordinary drill pipe, a pilot drill bit and a reaming drill bit.
The working principle of ZFY series reverse rig (AT series patio rig):
The main drive of the drilling rig is transmitted to the drilling tool system through the power water faucet, which drives the pilot drill or reaming drill to rotate. The roller on the pilot bit or the hob on the reamer bit impacts, squeezes, and shears the rock under the effect of weight on the rock to break the rock. Broken rock cuttings are discharged out of the hole by positively circulating water or mud during the drilling of the pilot hole. The rock cuttings during the reaming fall directly into the lower horizontal roadway, and are loaded into the transportation means or transport vehicle by the loading and unloading machinery, and are removed from the slagging site . The pilot hole is drilled from the upper level to the lower level, and the enlarged hole is pulled from the lower level to the upper level.

ZFY and AT series patio drilling rigs are mainly used for underground drilling and expansion of ventilation shafts, filling wells, pipeline wells, etc., and can also be used for large cross-section patios and slip shafts in underground mining of mines. Among them, AT2000 and ZFY 1500 patio roller rigs won provincial and ministerial first and second prizes respectively.
ZFY and AT series patio drilling rigs are driven by full liquid, and various drilling parameters can be adjusted steplessly, with good impact resistance and stable work; compact structure, simple and convenient installation.
The main structural features and technical advantages of this rig are:
• The drilling rig adopts the drilling method of drilling down the pilot hole, reaming upward, cutting in full cross-section, and directly forming a well. The patio can be directly drilled through, and the reaming cutter head is taken out from the upper level;
• The entire set of equipment adopts a full hydraulic drive control series. Each drilling parameter (axle pressure, revolutions, torque, etc.) can be adjusted steplessly according to rock conditions and drilling depth, with good impact resistance and work balance
• Adopt dual-cylinder propulsion system, large propulsion force and good balance;
• Slewing system adopts NJM-2 / 4FB low-speed large-torque hydraulic motor, ordinary spur gear transmission, and machine head with axial floating and universal swing angle mechanism;
• The main engine, pumping station and drill rod truck adopt rail wheel moving mode, which is convenient to move;
• The hydraulic system adopts the main and auxiliary pump dual circuit systems to make the slewing system and the propulsion system non-interfering with each other. It is equipped with a decompression drilling system for deep well drilling, which can realize the special function of drilling with a drill pipe
• Equipped with a manipulator that can directly extract the drill pipe from the ground and send it to the axis of the rig, reducing labor intensity;
• Equipped with anti-stick control mechanism, which can effectively prevent the occurrence of drill hold failure.


ZFY series reverse rig working diagram

Main technical parameters of ZFY series reverse well drilling rig

Rig model

Basic parameters

ZFY1.2 / 30
/ 150

(AT1200)

ZFY1.4 / 40
/ 200

(AT1400)

ZFY1.5 / 35
/ 250

(AT1500)

ZFY1.8 / 40
/ 250

(AT1800)

ZFY2.0 / 50
/ 200

(AT2000)

ZFY2.5 / 105
/ 200

(AT2500)

ZFY3.0 / 120
/ 200

(AT3000)

ZFY3.5 / 150
/ 400

(AT3500)

Guide hole diameter

(mm)
244 216 250 250 250 270 270 311

Reaming diameter

(m)
1.2 1.4 1.5 1.8 2.0 2.5 3.0 3.5

Drilling depth

(m)
150 200 200250 250 250 200 200 400

Out shaft speed

(rpm)
5-33 5-33 5-33 5-33 5-33 5-33 5-33 5-21

Rated torque

(KN m)
15 20 18 25 25 42 60 75

Torque

(KN m)
30 40 35 40 50 105 120 150

Thrust

(KN)
350 350 700 700 700 15000 15020 2000

Reaming force

(KN)
850 850 1250 1250 1250 2500 2500 3000

Drilling inclination

()
60-90 60-90 60-90 60-90 60-90 60-90 60-90 60-90

Host weight

(T)
6 7.2 7.5 7.5 8 10.5 11.5 12.5

Host transport size (length, width, height)

(Mm)

2290 * 1110

* 1430

2950 * 1370 *

1700

2670 * 1380 *

1560

2670 * 1380

* 1560

2700 * 1400

* 1600

3000 * 1450 *

1650

3000 * 1480

* 1650

3000 * 1750 *

1750

Host working size
(Length width height)

(Mm)

2977 * 1422

* 3277

3230 * 1770 *

3448

3350 * 1650 *

3940

3350 * 1650

* 3448

3350 * 1650

* 3980

3350 * 1720

* 3950

3350 * 1750

* 4000

4850 * 1900 *

5250

Drill pipe diameter *
Effective length

(Mm)

φ176 * 1000

φ182 * 1000
φ182 * 1000 φ200 * 1000 φ200 * 1000 φ200 * 1000

φ200 * 1000

φ230 * 1000
φ230 * 1000 φ254 * 1000

Drilling deviation

(%)
≤1 ≤1 ≤1 ≤1 ≤1 ≤1 ≤1 ≤1

Motor Power

(KW)
68 86 86 86 93.5 128.5 168.5 168.5
Driving method Full hydraulic drive
Adapt to lithology Unidirectional compressive strength of rock ≤1600MPa
AT series: non-coal enterprise type ZFY series: coal enterprise explosion-proof type


Product tags for this article: AT1200 AT1400 AT2000 AT1500 AT2500 AT3000

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