Energy-efficient Luffing Gear Hydraulics for Mobile Harbour Cranes
Challenge
Automatically operated hydraulic luffing jibs of mobile harbour cranes consume large amounts of fuel.
Conditions
- Due to the high handling capacity of luffing gear hydraulics, high dynamic forces act during the boom movement.
- The luffing gear hydraulic system is the main energy consumer of the mobile harbour crane.
- Changes to this system are often time-consuming and cost-intensive, checking of changes is typically based on performing new measurements on the actual system.
Scope
To increase energetic efficiency and reduce fuel consumption of mobile harbour cranes.
Task
- Development of a new hydraulic system for the luffing cylinder to reduce energy consumption
- Investigation of the requirements on the components for a typical load cycle
- Comparison of the new hydraulic system with a simulation model of the previous hydraulic system in terms of energy efficiency
Solution
- Derivation of the kinematic and dynamic relations for the calculation of the force acting on the cylinder
- Development of control strategies
- Incorporation of a representative load cycle into both simulation models
- Evaluation of component requirements
- Comparison of energy efficiency
Detailed Information
Detailed questions regarding the above-mentioned projects or possible solutions to specific problems will be answered directly by our engineering team.
