XR320D rotary drilling rig is a kind of construction machinery suitable for pore forming work of the cast-in-place concrete pile in construction of foundation works, which is widely applied in the foundation construction of ports, highways, railways, bridges and high-rise buildings. It is composed of crawler chassis and drilling upper structure. On basis of different formation, different drilling tools can be selected for drilling together with the friction-type or machine-locking type drill rod in combination with pressurization force of combining pressurization rod. It employs single-rope main winch technology and carries imported Cummins EFI engine with strong power. It also adopts luffing mechanism of large triangle form with ultrastrong construction stability, and is provided with extended function such as sleeve driving to improve the efficiency.
Technical Parameter XR320D
| S/N |
Description |
Unit |
Parameter value |
| 1 |
Max. drilling diameter |
mm |
2,500 |
| Max. drilling diameter |
| 2 |
Max. drilling depth (height of drill bit barrel: 0.8m) |
m |
90 |
| Max. drilling depth (height of drill bit barrel: 0.8m) |
| 3 |
Allowable luffing scope (from center of drill rod to slewing center) |
mm |
4,100-4,400 |
| Allowable luffing scope (from center of drill rod to slewing center) |
| 4 |
Drilling rig dimension in working condition (L × W × H) |
mm |
10,282×4,800×25,155 |
| Drilling rig dimension in working condition (L × W × H) |
| 5 |
Drilling rig dimension in transportation condition (L × W × H) |
mm |
17,615×3,500×3,500 |
| Drilling rig dimension in transportation condition (L × W × H) |
| 6 |
Weight of overall unit (standard configuration, excluding drilling tool) |
T |
92.8 |
| 7 |
Engine |
Model |
/ |
CUMMINS QSM11-C400 |
| Rated power/speed |
kW |
298 /(2,100r/min) |
| 8 |
Hydraulic system |
Max. working pressure of main pump |
Mpa |
35 |
| Max. working pressure of auxiliary pump |
Mpa |
30 |
| 9 |
Unit head |
Max. torque |
kN.m |
320 |
| Rotational speed |
rpm |
7-21 |
| 10 |
Pressurization cylinder (standard configuration) |
Max. pressurization force |
kN |
250 |
| Max. lifting force |
kN |
250 |
| Travel |
mm |
6,000 |
| 11 |
Pressurization winch (optional ) |
Max. pressurization force |
kN |
250 |
| Max. lifting force |
kN |
250 |
| Travel |
mm |
16,000 |
| 12 |
Main winch |
Lifting force |
kN |
280 |
| Max. single-rope speed |
m/min |
75 |
| 13 |
Crawler |
Width |
mm |
800 |
| External width (min.-max.) |
mm |
3,500-4,800 |
| Center distance between two longitudinal wheels |
mm |
5,052 |
|
