Crane modernization in concrete plant: 20 t double-girder overhead crane replaces old system
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Customer & Initial Situation
Contern, a concrete company in Luxembourg, commissioned the HPS-Group to renew a double-girder overhead crane (20 t) built in 1979. The previous system was increasingly causing production downtimes due to a lack of spare parts availability and rising repair costs. The goal was to increase efficiency in material handling and permanently reduce downtime.
Project Requirements
The following requirements were defined for the modernization:
- Optimal use of space through customized crane architecture
- Additional lifting height for processing larger concrete elements
- Use of frequency-controlled control technology for precise and low-sway load movements
Process in Three Phases
- Analysis & Planning
Assessment of structural conditions, decision for a raised construction with a lowered trolley (additional 700 mm lifting height), design for 40 m/min travel speed to optimize cycle times - Design & Pre-assembly
Manufacturing and pre-assembled components on the ground, integration of HERLiner frequency inverter technology for infinitely variable travel and minimized load sway - Assembly & Commissioning
Installation of the system via lifting process, final assembly, and commissioning including safety and functional testing
Result
- 700 mm additional lifting height enables larger concrete elements
- 40 m/min travel speed optimizes production processes
- Reduced downtime and maintenance times thanks to modern components
Contern evaluates the project as successful, particularly the combination of price, expertise, and consulting.
Bruno Marx, Operations Manager of the pipe plant: “We are completely satisfied with the new crane systems.”
Date:
15/08/2025
