The system enables equipment to be changed from inside the cab. As well as being available for Liebherr hydraulic excavators, it is available for wheeled loaders in the mid-sized series, L 524 to L 542. Liebherr said that it is the only construction machine manufacturer worldwide to offer an automatic hydraulic coupling system for wheel loaders combined with a hydraulic quick-change system.
The operator simply pushes a button to change between multiple mechanical and hydraulic attachment tools - in the case of wheel loaders, for example, between high-dump buckets, screener crusher buckets, pipe grabbers or concrete mixer buckets.
“We are very satisfied with Likufix. The system is robust, safe and reliable,” said Axel Schupp, head of machine technology at Feickert. Sewer, water pipe and development work accounts for more than 60% of the work of the construction specialist based in Weilburg in Hesse, Germany.
A wide range of sewer construction work is required for a new housing development in Friedrichshofen. Feickert is using two Liebherr A 900 C Litronic wheeled excavators and a Liebherr L 538 wheel loader, all fitted with the system.
Both wheeled excavators work with a range of attachment tools that can be switched in using the Likufix controls. They use the back hoe to excavate the trenches and load the material into a dumper. They lay the sewer pipes using a pipe grabber. A tilt bucket is required in order to correctly backfill the sewer trench. Feickert uses a compactor attachment in order to compress the filled material.
The L 538 fitted with Likufix can swap between an Allu screener crusher bucket and excavation bucket in a matter of seconds in an equipment change that is repeated up to 20 times per day. In some cases, Feickert mixes lime into the processed material. The wheel loader collects the lime from a separate storage area, which requires another equipment change.
Schupp said: “Likufix enables our Liebherr wheel loader to process and handle material on-site - that is, to do the work of two machines.”