Atlas Copco Blasthole Drills
Pit Viper 311
Rotary and DTH drilling Hole diameter 9 in – 12 ¼ in (229 ( 229 – 311 mm) Maximum hole depth 135 ft (41 m)
Built for performance Designed for comfort With a 110,000 lb (50 tonnes) bit load capacity, the Pit Viper 311 can add unsurpassed productivity to your mining operations. The heavy, durable, ergonomically designed Pit Viper 311 can drill a 65 ft (19.8 m) clean hole in a single-pass. By utilizing a high proportion of proven technology from previous rigs in the Pit Viper series, the progress towards greater energy efciency, safety and productivity continue. The hydraulic top-head drive rotary head that our customers have always preferred is retained, as well as the automatically tensioned hydraulic cable feed system, and the hydraulic powered break out tools. The elevated cabin is l arger than that used on PV-351 and has been further improved over the PV-235 cabin. The live tower is capable of single-pass drilling of a 65 ft (19.8 m) clean holes, with bit changing above deck. Single-pass drilling yields higher drilling efciencies (up to 25% when drilling in soft material) by eliminating rod change time and allowing more time for drilling. Development of the PV-316 multi-pass model and high pressure compressor options for DTH drilling are well advanced and expected to be launched during 2013.
RCS as standard
Rotary or DTH drilling
Atlas Copco’s Rig Control System (RCS) comes standard on the PV-311. RCS provides a number of safety and interlock features, as well as provides a foundation to build in more technology options if desired in the future. There are optional RCS packages available including: AutoLevel, AutoDrill, high precision GPS, and teleremote control. A benefit of the RCS system is that new functionality/options can be added later without major rebuilding of the machines. Visit www.rcspitviper.com for more information
The Pit Viper 311 is designed to handle 7 5 ⁄ 8" to 10 ¾" drill pipe. For the low pressure version, 110 psi (7.6 bar) can be used for rotary drilling of blastholes up to 12 ¼" in diameter. The standard diesel fuel tank has a capacity of 700 U.S. gallons and provides sufficient fuel for 12 operating hours. In conjunction with the optional 1,200 gallons fuel tank it will be possible to drill up to 24 hours before refueling. Alternative fuel/water tank combinations are available, as well as the optional fuel saving ”Hydraulic clutch”.
Compressor range Low pressure rotary
3000 CFM @ 110 psi
Atlas Copco Patented feed system
Low pressure rotary
3800 CFM @ 110 psi – Altitude (SCFM 3000)
The PV-311 offers a dual-feed system with dual hydraulic feed cylinders that raise and lower the rotary head smoothly and positively by way of cables for both pulldown and pullback. In addition large diameter sheaves are designed to further increase cable life.
High Pressure DTH
Under development
Operator comfort The new PV-311 ergonomically designed cab compliments Atlas Copco’s state-of-the-art Rig Control System, offering you a platform for autonomy and operator safety. Designed and tested to the same Falling Object Protective Structure (FOPS) standards as dozers, the cab protects against falling objects. Built to withstand bitter cold and excessive heat, the new PV-311 cab design offers unmatched operator comfort. With improved pressurization, door sealing and the insulation of the new cab, outside drilling noise is greatly reduced. Our new cab is climate controlled with a large A/C package, dedicated trainee seat with seatbelt, and plenty of room for storage. There are also options for a refrigerator, microwave, and a heated operator’s seat. Large cab windows and an excavator style chair sits on an elevated platform to increase visibility with the assistance of integrated lights, and a large back lit electrical cabinet enhances serviceability.
Excellent serviceability The Pit Viper 311 is designed to be a maintenance friendly machine, with an optional 360-degree walk around access that allows for safe, easy movement with unsurpassed access to service points. Equipped with tower access and fall restraint system, emergency stops, accessible staircases and spacious enclosures for components, the PV-311 offers easy accessibility for service. The valve stand is centrally located above the deck for auxiliary hydraulic components and I/O modules, and air lters are located at the non-drill end of the rig. There’s an open access on both sides to service the air compressor and engine, as well as easy access to the hydraulic system. A consolidated lter rack is offered providing ease of access to all uid lters on the machine.
Sturdy, powerful, efficient To ensure long frame life without rebuilds, the design and testing process followed the concept used for the PV-351. The PV-311 tower offers a slide wrench similar to the 351, but with an improved deck bushing. An upgraded model of the DM-M3 rotary head has been installed with larger motors (13,800 lbf-ft @ 140 RPM), a dedicated lubrication pump and improved rotary head guides. A hydraulic central grease system, auto-cable tensioning and an improved hands free breakout wrench come standard on the PV-311. The power system setup for the PV-311 includes a choice of matched engines and compressors for rotary or down-the-hole drilling. The power pack consists of a diesel engine (Tier IV available) that is directly coupled to an air compressor on one end and a six-hole hydraulic pump drive gear-box on the other end, with the option to add in the patent pending air compressor clutch. The complete power pack assembly is mounted on its own sub base and then isolation mounted to the rig’s main frame.
Standard features • Insulated, pressurized, air conditioned cab with tinted glass and excavator style platform • RCS Basic, Rig Control System • Central lube system • Ground level fast service • Ground level drain • Cab activated horn
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Ground level cable horn actuation 12 V power outlet Tow hooks Component drain system Strobe lights for the tower and cab Buddy/trainee seat Filter rack
• • • • •
24 HID lights are standard Auto-tension Central hydraulic test station 8k winch for loading drill rod Ground level battery isolation and jump start • Valve rack
A selection of features on Pit Viper 311 Series For a more comprehensive options list, pl ease contact your local Atlas Copco Customer Center.
Enclosure
Camera system
Hydraulic clutch
Cold weather
The enclosure option reduces noise and provides coldweather protection. The full length doors provide easy access for service and maintenance.
An optional four-camera system is available to increase visibility around the rig. A wide angle camera will be installed on the non-drill end for a tramming view. A color display will be mounted inside the cab.
This optional patent-pending hydraulically operated automatic wet clutch is a feature that can be congured variously to perform a variety of rotary or DTH drilling operations, and is designed to signicantly save on fuel costs. It’s available on both high-and-low pressure airends.
The cold weather package allows for warm start-up and drill operation, while operating in extremely cold, ambient conditions. Several options are available that, if fully utilized, allow the drill to operate in arctic conditions.
Technical data PV-311 Engine (Tier II)
Technical data Drilling Method
Rotary or DTH - single pass
Caterpillar
C32
1125 HP / 839 kW@1800RPM
Hole Diameter
9 in - 12 1/4 in
229 - 311 mm
Cummins
QSK 38
1260 HP / 940 kW @1800RPM
Hydraulic Pulldown
100,000 lbf
445 kN
MTU
16V2000
1205 HP / 899 kW@1800RPM
Weight on bit
110,000 lb
49,895 kg
Engine (Tier IV)
Hydraulic Pullback
50,000 lbf
222 kN
Single pass depth
65 ft
19.8 m
Maximum hole depth
135 ft
41.1 m
Rotary head, torque - speed 0-140 RPM - speed 0-240 RPM
13,800 Ibf ft 7,800 lbf ft
17.5 kNm 10.2 kNm
Esti mated wei ght
310,000 lb
140 tonnes
Length
48 ft
14.6 m
Height
100 ft 6 in
30.6 m
Width
25 ft 4 in
7.7 m
•
•
Dimensions tower up
Dimensions tower down Length
99 ft
30.2 m
Height
29 ft
8.8 m
Caterpillar
C32
1125 HP / 839 kW
MTU
16V2000
1300 HP / 969 kW
Drill pipe specification 35 ft (10.67 m) Drill pipe diameter 7 5/8"
(194 mm)
Bit diameters
Thread
9" - 9 7/8"
5 1/4" BECO
8" (203 mm)
9 7/8" - 10 5/8"
5 1/4" BECO
8 5/8"
(219 mm)
10 5/8" - 11"
5 6" BECO
9 1/4"
(235 mm)
11" - 12 1/4"
6" BECO
9 3/4" (248 mm)
12 1/4"
7" BECO
10 3/4" ( 273 mm)
12 1/4"
8" BECO
*Maximum hole depth only achieved with certain pipe si zes and wall thickness
www.atlascopco.com /blastholedrills
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