In the realm of crane design, accurately calculating design loads is crucial. According to DIN1055 Part 1 and the DASt Guideline 008, crane design loads are categorized into main loads (H) and additional loads (Z). Main loads encompass permanent loads, live loads from crane running wheels including vibrations, and horizontal lateral loads in special circumstances. Additional loads cover transverse loads to the runway, horizontal lateral loads from crane-way girders, and horizontal loads along the runway due to starting up or braking.
- Main loads are an indispensable part of crane design as they are permanent and require special attention. Limitations on live loads and the treatment of snow loads are also critical in design considerations. While calculating the live loads of crane running wheels, the combination of permanent and hoist loads in the most unfavorable position must be considered.
- The vibration coefficient ρ is used to calculate the impact of vibrations on the crane-way when cranes and trolleys are in motion. Furthermore, when multiple cranes operate simultaneously, the largest vibration coefficient ρ*R is used for stress calculations.
- Additional loads include all non-permanent forces that affect the structure. For example, horizontal loads along the runway due to starting or braking, as well as potential tilting or collision forces.
- Special attention also needs to be paid to loads under special circumstances, such as altered wheel loads due to tilting of trolleys with rigidly guided hoist loads when traveling against obstructions and buffer end forces during crane collisions with stops.
- Lastly, safety verification is an integral part of the process. Whether verifying main or additional loads, it's essential to ensure that structural components can withstand the stresses and have adequate safety margins.
By meticulously analyzing these design loads, we can ensure the stability and safety of cranes during operation, thus protecting personnel and equipment from harm.
For detailed information, please refer to the attached PDF document.
Contact Kinocranes today to have our team of experts accurately calculate your crane design loads, ensuring the safety and efficiency of your equipment.