(VIDEO) Liebherr electrifies two crawler cranes, drill rigs, and piling rigs
Liebherr is extending the unplugged series with six new machines which include two new piling rigs, two drill rigs, and two crawler cranes.
Zero emissions technology is a positive of the unplugged machines. They do not produce any exhaust fumes and are quiet while operating. This is beneficial in noise-sensitive regions and is favourable to construction site personnel and residents. So far, the concept has already been successfully applied in London, Paris, and Oslo.
The battery is charged using a conventional job site electric supply. The operation can continue as normal while charging. In order to change to battery operation, operators just need to pull out the charging plug. Whether attached to the electric supply or not, the performance and range of applications remain unchanged.
All six models are available in both conventional and battery-operated versions and have identical performance specifications.
Liebherr's LRH 100.1 unplugged and LRH 200 unplugged piling rigs
The LRH 200 has been completely newly developed and closes the gap between the LRH 100 and LRH 600 in the series of piling rigs.
A 200-kWh battery pack ensures that the unplugged models can operate in battery mode for four to five hours in average pile driving applications. Optionally, it can be upgraded to 400 kWh for eight to 10 hours of operation.
The design of the LRH 200 extends the range of applications and makes it more versatile in use. In addition to piling, the machine can be used for continuous flight auger, full displacement, and down-the-hole drilling, as well as for soil mixing work. The machine has a torque of 250 kNm.
When equipped with Liebherr's H 6 hydraulic hammer, the LRH 200 and the LRH 200 unplugged can lift piles up to 24.5 metres long and weighing up to 16 tonnes. The machine excels with its large working range. A radius of up to 8.7 metres allows the machine to not have to be constantly moved.
The design of the leader enables inclinations of up to 18 degrees in all directions. Furthermore, it is also possible to raise or lower the leader by 6.5 metres (e.g., when working in a foundation pit).
The Ground Pressure Visualization of the new LRH model calculates the current ground pressure and compares it with the specified safety limits of the respective construction site. The ground pressure is displayed in the operator's cabin. This allows the operator to be permanently aware of whether the machine is situated in, or is approaching, a critical area.
The operation of the new LRH 200 piling rig is based on the concept of the LRH 100. The integrated data recording makes the analysis of the pile data easy and saves time.
Liebherr's LB 25 unplugged and LB 30 unplugged drill rigs
The LB 25 and LB 30 drill rigs have proven themselves in the conventional version. The new battery-operated unplugged versions are identical with regard to application possibilities, weight, or transport; however, they have the additional advantage of zero emissions. The drilling rigs can be used for all common applications in the field of deep foundations.
Due to the optional extension of the drilling axis, the machines can be deployed for drilling diameters of up to 3.4 metres. The optional rear support and the new design of the modular rear counterweight ensure higher stability and longer service life.
In addition to the standard design, both machines are available in a low head version with a total height of 14.1 metres, or as an ultra-low head with only 7.7 metres.
The machine automatically starts to run on battery power when disconnected from a power source. The battery is designed for a working time of 4 hours in Kelly operation. Whether in battery or plugged-in operation, the drilling performance remains unchanged.
Liebherr's LR 1130.1 unplugged and LR 1160.1 unplugged crawler cranes
The new machines LR 1130.1 unplugged and LR 1160.1 unplugged extend the range of crawler cranes from Liebherr-Werk Nenzing GmbH.
The electro-hydraulic drive of the new cranes has the same performance specifications as the conventional version. Both versions are operated in the same way.
The capacity of the battery is designed for an average lifting operation of eight hours. Alternatively, the main boom with luffing jib can be completely erected. The battery can be recharged within only 2.5 to 4.5 hours. As an option, the performance can be increased by 20 to 60 percent using additional batteries.
In idling mode, the sound pressure level of three unplugged cranes is equivalent to that of a normal conversation on the job site. This corresponds to a value of only 60 dB.
The designers of the crane emphasize safety. The new battery-operated models are also available with all proven assistance systems.
The latest system is the Gradient Travel Aid for the safe negotiation of slopes and inclines. The crane's control system automatically calculates the centre of gravity and warns the operator before the crane leaves the safe area. While travelling, the operator receives information about the permissible and actual gradient, and the crane's overall centre of gravity at all times.
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