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Crowd cylinder type
The piling rig MBG 12 is the first model of a new generation of rotary kelly drilling rigs. The key features are:
• compact unit with ideal modular dimensions and weight for simple transport
• optimum weight - power ratio
• easy maintenance and repair
• main winch at the rear of thr rig (reduction of weight)
• kinematic system: stiff connection, mast adjustment in 2 separate operations in x-y direction
• bottom of the mast is bolted to a horizontally movable frame (horizontal movability 400 mm )
Chain guided crowd system
Optional: chain guided crowd system
Two chains are fixed along the mast. Two drive motors for moving the unit along the chain, are mounted on the sledge of the rotary drive.
The chain guided crowd system allows the use of 4 m casing sections when Kelly drilling (with a Kelly bar 3/15).
It is required for CFA drilling and for FDP (full displacement) piling.
Technical specifications Drilling unit
|
Kettenvorschub |
Overall height |
14.500 mm |
Operating weight approx. |
34.500 kg |
Rotary drive |
MDK 132 |
Torque at 300 bar |
125 kNm |
Speed of rotation max |
35 U/min (RPM) |
Crowd system |
|
Crowd pressure / pull* |
105 / 90 kN |
* values measured at casing drive adapter |
|
Speed (down/up) |
7,5 / 7,5 m/min |
Fast speed (down/up) |
35 / 35 m/min |
Stroke of sledge |
9.300 mm |
Main winch |
|
winch classification M6 / L3 / T5 |
|
Single line pull ( 1 st layer effective / nominal) |
100 / 125 kN |
Rope diameter / Length |
20 mm / 50 m |
Line speed max. |
60 m/min |
Auxiliary winch |
|
winch classification M5 / L2 / T5 |
|
Single line pull (1st layer effective / nominal) |
30 / 38 kN |
Rope diameter / Length |
13 mm / 30 m |
Line speed max. |
45 m/min |
Mast inclination |
|
Backward / forward / lateral |
15° / 5° / +- 3° |
Standard equipment
• Main winch with hydraulically operated freewheeling
• Auxiliary winch with hydraulic load sensing
• Hoist limit switch on main and auxiliary winches
• Rotary drive MDK 132
• Swivel for main rope
• Hydraulically tiltable masthead
• Crowd in fast or slow mode
Measuring and control equipment
• Bauer monitor unit for displaying relevant operation and system data
• Analog display of pump pressures (3 pressure gauges)
• Mast inclination measurement on x/y axes (digital/analog display)
• Automatic vertical alignment of mast
• Depth and load measuring device main winch
• Swivel alignment function on main winch
• Speed measuring device on rotary drive
Technical specifications
Technical specifications Base carrier
Engine |
CAT 3056 E |
Rated output ISO 3046-1 |
129 kW @ 2.000 U/min (RPM) |
Engine conforming to |
|
Diesel tank |
250 l |
Ambient air temperature (at full power) |
- 20° C bis (up to) 40° C |
Sound pressure level in cabin (EN 791, Annex A) |
L PA 74 dB(A) |
Sound power level |
L WA 104 dB(A) |
Hydraulic System |
Zweikreisbohrhydraulik |
Hydraulic power |
91 kW |
Hydraulic pressure |
300 bar |
Flow rates (main circuits + auxiliary circuit) |
2 x 150 l/min + 1 x 80 l/min |
Hydraulic oil tank capacity |
180 l |
Undercarriage |
UW 25M |
Retractable crawlers |
FL 6 |
Track width |
2.000 / 2.800 mm |
Overall width of crawlers |
2.500 / 3.300 mm |
Triple bar track shoes |
500 mm |
Overall length of crawler units |
4.200 mm |
Traction force (effective) |
210 kN |
Travel speed |
2 km/h |
Optional equipment
Base carrier
• Radio / CD player
• Preinstallation for pressurised air conditioning
• Pressurised air conditioning
• Catwalk on side of operator´s cab
• Cab movable sideways
• Independent cab heater
• Air conditioning system
• Tempered safety glass panels
Drilling equipment
• Chain drive crowd system
• Masthead for continuous flight auger drilling
• Upper kelly guide
• Folding mastkhead
Measuring and control equipment
• Data storage system
• Data transmission system
