Duty-Cycle Crawler from Liebherr Works in Southern Germany

Enlarge Image Liebherr's HS 8300 HD with hybrid drive in dragline application

April 22, 2015 - Liebherr’s HS 8300 HD duty-cycle crawler crane recently made its first lift on a jobsite in Bavaria. The crane is the first Liebherr model equipped with the hybrid drive Pactronic.

 

Wanner & Märker has been using the new duty-cycle crawler crane for gravel excavation in one of its three quarries in southern Germany.

 

Weighing more than 350 tonnes, the machine operates on the site with a 44 m long main boom and a dragline bucket made by Rädlinger. The digging depth is approximately 26 m, and the unloading height about 15 m. Apart from the dimensions of the HS 8300 HD, the machines hybrid drive allows it to increase turnover at the jobsite by up to 25%.

 

The Pactronic hybrid system from Liebherr has a hydraulic-based drive that provides economic and ecological advantages. Surplus energy is stored and subsequently regenerated, so material-handling capacity is increased while fuel consumption is reduced.

 

Enlarge Image The hydraulic-based hybrid system provides economic and ecological advantages.

The hybrid drive has been used in Liebherr’s mobile harbor cranes since 2010. The proven technology of the hydraulic accumulator ensures low maintenance requirements and maximum reliability. The reduced energy consumption reduces emissions, therefore creating less environmental pollution.

 

In the development stage, special attention was paid to an extended service life of the duty-cycle crawler crane. Therefore, the steel fabrication of the basic machine is solid, and critical points were reinforced using extra high-quality materials such as carbon fiber. During production, the use of automated welding robots were used to increase the machine's service life even under extreme operational conditions.

 

Apart from dragline operation, the HS 8300 HD is suitable for various other material-handling jobs. The machine can also be equipped with an orange-peel grab and a clamshell.

 

The HS 8300 HD incorporates many components and system solutions developed by Liebherr, including the Litronic control system, which is based on CANBUS technology and includes all control and monitoring functions of the machine. The Litronic system works reliably even under extreme weather conditions and vibrations.