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DTH hammer with TONE's original design being popularly used and licensed in overseas
DTH hammer is a percussion system driving a piston inside hammer body with up and donw motion by compressed air and transmitting an intensive percussion energy to the bit to enable the drilling by crushing the rock. Drilling method by DTH hammer exerts high drilling performance especially for drilling hard rock and contributes for shortening work schedule. Hence, this method is widely utilized for foundation work, landslide prevention work, quarrying services, marine civil work, etc.
DTH hammer is called as Down-the-Hole hammer and is the technology applied for the method (Plan B) of rescue hole construction for mining accident in Chile, 2010.
DTH hammer is called as Down-the-Hole hammer and is the technology applied for the method (Plan B) of rescue hole construction for mining accident in Chile, 2010.
Product introduction
| Application | Series of Model |
Features | Model Name | ||||
|---|---|---|---|---|---|---|---|
| DTH Hammer | MACH | Large Hole Diameter Vertical hole drilling for rock |
MACH-50M | MACH-80M | MACH-137M | MACH-145M | MACH-183M |
| HHD | Multi-DTH Hammer System Horizontal hole drilling for rock |
HHD-400 | HHD-600 | ||||
| Bit for DTH hammer | SUPER JAWS |
Retractable Bit | 15 Standard Models ( 2 - 4 wings) | ||||
MACH
MACH system composed of multi-DTH hammers is suitable for vertical hole drilling with large hole diameter. Features of MACH system with TONE's original technology are shown as below.
- Applicable of operation with reverse circulation system
- By means of stand pipe installation, MACH system is applicable to drilling for rock, highly collapsing formation and on off-shore.
- Since stand pipe is filled with reverse circulation fluid, drilling by DTH hammer can be carried out with less noise and vibration.
- As the actuated air passes through air pipes to the ground without flushing into the hole, drilled hole can be kept stable.
| Model Name | MACH-50M | MACH-80M | MACH-137M | MACH-145M | MACH-183M | |
|---|---|---|---|---|---|---|
| Drilling diameter（mm） | 500 | 800 | 1370 | 1450 | 1830 | |
| Hammer | Model Name | AD-150M | AD-250M | |||
| Quantity | 2 | 2 | 6 | 6 | 6 | |
| Air consumption （m3） |
0.69 MPa | 15 | 30 | 90 | 90 | 120 |
| 0.98 MPa | 25 | 50 | 150 | 150 | 200 | |
| Reverse diameter（mm） | 150 | 200 | ||||
HHD
HHD is multi-DTH hammer system with a mechanism for correcting the deflection of drilled hole by adjusting air pressure for horizontal hole drilling. Feature of HHD system with TONE's original technology are shown as below.
- HHD system is composed of three DTH hammers which are independently actuated and enables to correct at any drilling direction.
- By monitoring the target located at hammer case center at real time, the need of correction of hole deflection can be checked.
- Retractable bits are equipped as standard.
- Applicable to collapsing formation by adjusting percussive energy.
| Model Name | HHD-400 | HHD-600 | |
|---|---|---|---|
| Drilling diameter | Expanded diameter（mm） | 425 | 630 |
| Retracted diameter（mm） | 384 | 580 | |
| Applicable hammer | Air consumption （1.03MPa） |
20.1m3/min | 32.7m3/min |
| Air consumption （1.72MPa） |
35.4m3/min | 55.5m3/min | |
| Applicable steel pipe | φ406.9×t7.9mm | φ609.6×t9.5mm | |
| Overall length（mm） | 1350 | 1700 | |
| Weight（kg） | 833 | 2219 | |
SUPER JAWS
SUPER JAWS has bit structure as to that the drilling for main area is done by bit body while only reaming is done by wing bit, unlike slide type retractable bit or eccentric type retractable bit, and is a remarkable retractable bit with transmission efficieny of percussinve energy to the maximum.
Features of SUPER JAWS with TONE's original technology are shown as below.
Features of SUPER JAWS with TONE's original technology are shown as below.
- By pursueing the simplification of bit structure, the durability of component parts and bits is remarkably improved.
- The bit with symmetrical structure distributes the bit load uniformly, resulting in high vertical accuracy of drilled hole.
- Bit structure allows a smooth removal of cuttings.
- The bit can be used for wide ground formation from overburden to hard rock.
| Model Name | No. of Wing | Bit Diameter（mm） | Applicable casing size（mm） | ||
|---|---|---|---|---|---|
| At expanding | At retracting | Inner diameter | Outer diameter | ||
| T115 | 2 | 148.0 | 115.0 | 130.8 | 139.8 |
| T140 | 2 | 185.0 | 141.0 | 155.2 | 165.2 |
| T190 | 3 | 237.0 | 191.0 | 204.7 | 216.3 |
| T280 | 3 | 341.0 | 282.0 | 301.7 | 318.5 |
| T315 | 3 | 373.0 | 315.0 | 336.6 | 355.6 |
| T365 | 4 | 430.0 | 365.0 | 387.4 | 406.4 |
| T410 | 4 | 478.0 | 412.0 | 435.0 | 457.2 |
| T455 | 3 | 530.0 | 455.0 | 482.6 | 508.0 |
| T510 | 4 | 581.0 | 506.0 | 533.4 | 558.8 |
| T560 | 4 | 632.0 | 556.0 | 584.2 | 609.6 |
| T610 | 3 | 682.0 | 605.0 | 635.0 | 660.4 |
| T660 | 4 | 733.0 | 656.0 | 685.8 | 711.2 |
| T710 | 4 | 784.0 | 707.0 | 736.6 | 762.0 |
| T760 | 4 | 835.0 | 758.0 | 787.4 | 812.8 |
| T810 | 4 | 886.0 | 809.0 | 838.2 | 863.6 |
