Liebherr launches new deep foundation machine
Compact piling and drilling rig type LRB 23, part of a three-pronged launch, can withstand high torque for Kelly drilling, rare for its size
In a new launch spree done through virtual presentations, Liebherr has unveiled a group of new machines, which comprise a deep foundation machine, a new duty cycle crane and the world’s first battery powered crawler crane, all in a new design.
The innovations are all from the Liebherr-Werk Nenzing GmbH in Austria and MECN.com will be serialising the news about them, starting with the new deep foundation machine in this story. The LRB 23 deep foundation machine, which Liebherr calls the “continuation of a success story”, is a compact piling and drilling rig type that closes the gap between its existing LRB 16 and LRB 355.2/6 models.
“The new all-rounder for deep foundation work offers an impressive engine output of 600kW and so delivers the necessary capacity for all common deep foundation work, such as drilling with a Kelly drill, double rotary drill, full displacement equipment and continuous flight auger, as well as soil mixing and applications with a vibrator or hydraulic hammer,” said Liebherr’s statement.
“Its compact design allows for transportation of the LRB 23 in one piece, so simplifying mobilisation between jobsites. The remote control simplifies the loading process for transportation as well as the assembly of the machine.”
According to Liebherr, the “advantages of the rigid leader are proven in operation”. As it can withstand high torques even Kelly drilling is possible, which is rare for a machine of this size. The rotary drive BAT 300 delivers a maximum torque of 300kNm.
Locking of the Kelly bar’s telescopic sections is made significantly easier with the aid of the Kelly visualisation system in the LRB 23. Thanks to the real time display of the Kelly bar’s locking recesses on the cabin monitor, the operator is permanently informed about the actual distance to the next locking recess. Colour indications inform when the bar can be locked. Furthermore, false positioning of the Kelly bar during the shake-off process is indicated through a warning signal.
During continuous flight auger drilling the concreting process is automated thanks to the drilling assistant. All assistance systems contribute to time savings, higher availability of the machine and a significant increase in safety during operation. The newly designed piling and drilling rig convinces through precision, high performance and a long service life.
