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Dando - Model Terrier -Multipurpose Rotary Drilling Rig
This addition to the Dando Terrier extends the rig’s range of use to include continuous flight augering, tricone and drag bits and rotary core drilling as well as DTH hammers. The Dando Terrier can now offer versatility of a multi-purpose drill rig - and remain small enough to fit through a standard doorway.
Comprising:
Hydraulic Rotary Drilling Head
Driven by hydraulic motor fitted with a 7:1 ratio gearbox with manual gear change providing full controlled power and rotational speeds in forward or reverse with integral side inlet water swivel with BW Rod connection fitted to travelling carriage plate with bolts.
High Range
Maximum Torque: 125 ft/lbs 170Nm
Maximum Spindle Speed: 312 r.p.m.
Low Range
Maximum Torque: 780 ft/lbs 1059Nm
Maximum Spindle Speed: 50 r.p.m.
Mast and Carriage Assembly
Fabricated welded steel box section construction fitted with a pair of rubber wheels and two levelling jacks. Hydraulically raised and lowered by single double acting ram on the main Terrier undercarriage and attached when required to main Terrier undercarriage via Pivot Frame Assembly.
Overall length/height: 2.4m - 3.5m
Guide Ring: 160mm effective ID
Feed and Hoist System
Provided by single double acting ram transmitting adjustable hydraulic load to the rotary head.
Stroke: 2.3m to accommodate 2.0m effective length drill rods
Stroke: 1.6m to accommodate 1.0m effective length drill rods
Feed force: 1000Kgf
Hoist force: 7000Kgf
Controls and Hydraulic Power
Hydraulic functions of hoist/feed and rotation are controlled from main hydraulic control valve on the Terrier and hydraulic power is supplied via PTO from the main Terrier hydraulic power pack.
Weight of Dando Terrier base assembly: 754kg
Weight of rotary head mast assembly attachment:
Long Mast 2.3 Stroke: 359kg
Short Mast 1.6 Stroke: 265kg