Structural Design Of Hydraulic Crane And Static And Dynamic Analysis Of The Key Parts

Hydraulic crane is a loading and unloading equipment on a ship, which can achievehoisting, luffing and slewing in the rated load. It has many advantages, such as compactstructure, simple operation and high efficiency of loading and unloading. The article did adesign for35t/30m hydraulic crane used on bulk carriers. On the basis of overall design,the article made the static analysis and modal analysis of crane boom, then finished thedynamics simulation about the slewing mechanism. These can provide guidance for thedevelopment of similar products.The main research work contains:1. According to the design parameters of the hydraulic crane, we decided the overallprogramme. Then we carried out a detailed structural design of hydraulic crane’s hoistingmechanism, luffing mechanism and slewing mechanism. Besides we established the threedimensional model of the hydraulic crane by Solidworks.2. The boom’s static analysis in the maximum and minimum working radiusconditions was finished by ANSYS, we got the distributional regularities of stress anddisplacement under two work conditions. The results showed that the boom’s strength andstiffness met the requirements.3. The boom’s modal anaysis was finished by ANSYS. We extracted foremost10-order type vibrational frequency and reaction of the boom. Then we calculated theworking frequencies caused by the engine’s vibration, the cargo’s deflection and so on. Thecomparing result proved that the resonance phenomenon won’t happen.4. The dynamics simulation about the crane’s slewing mechanism was finished byADAMS. We studied the dynamic load’s variation in the condition of the maximumworking radius and lifting the rated load. The simulation result can provide theoretical basisfor the design of slewing mechanism.