Dynamics Simulation And Analysis Of Hoisting And Rotary System For Crawler Crane

With the development of crane industry, crawler crane is becoming huger and more complicated, its rising height, radius and weight are increasing. As a result, more advanced design method is acquired. Crane in the course of their work (such as cargolifting, drop process) dynamic load the metal structure will have a strong impact vibration, fatigue calculations are greatly and braking work or other status suddenly changes affected. So, the paper begins the dynamics study of the crawler crane.Based on the virtual prototype technology, this paper builds the model and simulates the dynamics of QUY150, it main stuys the vibration rules of system when the status of starting,braking and others suddenly changed accordingly, to determine the dynamic response of the system,gets the pull force of lifting rope, gets the rules of swing and deflection, gets the Dynamic Coefficient of hoist and impact Coefficient of the system with different conditions.In this paper, the dynamic model of crawler crane use ADAMS, PRO/E and Ansys modeling methods to establish flexible boom and other rigid body modeling; use the mothod of bushing force to establish the rope model, on the basis of this use ADAMS/View's simulation function for the model to build a dynamic simulation; At the same time, using the experimental design methods to enhance the system to optimize the experimental design.With the dynamics simulation analysis of the upgrade system and the rotary system for crawler crane, get the Dynamic Coefficient of hoist,impact Coefficient and curve of swing of the maximum rated operating conditions, provide a basis gist and reference for boom's dynamic design. Using ADAMS/Insight to crane hoisting system for the experiments design, gets a better combination of parameters, in order to provide a reference for the hoist system of parameter setting.