Design And Stability Analysis Of Oblique Bearing Support System

The support system has been widely used in defense and engineering.As an important part of heavy-duty bearing and transport tools,it can provide a stable bearing function.Since the traditional engineering machinery’s support system mostly bear the vertical gravity and external load,it is difficult to meet the needs of oblique bearing.Therefore,taken a heavy load carrying vehicle as the research object,a hydraulic automatic support system which can withstand oblique impact is designed.The stability analysis of dynamic characteristics of the support system under the impact force is carried out.This thesis analyzes the characteristics of vehicle support system,support modes,transmission modes and control mode types.The oblique support system is designed,built up and analyzed.The specific research content are as follows:(1)According to the demands of a heavy-duty vehicle support system,the overall design of the oblique support system is completed.The oblique support system’s transmission mode,support mode,control mode are chosen.Based on the theory of multi-body dynamics,the stability analysis scheme of support system under load is established.(2)The topology and physical model of oblique support system,including geometric model,motion constraints and load elements,are established.The ground support forces’ load elements are established using the IMPACT contact function.The iMPact load is established by Gaussian fitting method.The equivalent linear spring-damping load element is established by analyzing the stiffness of hydraulic cylinder.(3)By simulating and calculating the dynamic characteristics of the oblique supporting system under different working conditions,the amount of beating of the post-support and the leg,the forces of the post-support and the leg are obtained.The work stability of the vehicle support system is analysed.(4)The hydraulic and electronic control system are designed.A oblique support control system software based on PLC is developed.The host computer software andPLC programming is completed.The logical control of oblique support and communication between the the PC and PLC are achieved.(5)The post-support module and the leg module of the vehicle oblique support system are designed.Using the finite element analysis method,the key components are analyzed and checked.The manufacturing and assembly of the oblique bearing support system platform is completed.The joint debugging and experiments of machine,electric and liquid are carried out.The functional requirements of the oblique support system are realized.