Simulation Analysis And Experimental Research Of Aircraft Engine Transfer Platform Based On Omni-directional Movement

With the improvement of assembly line automation level,the mobile performance of delivery platform has an important impact on improving the production efficiency of factories and enterprises and reducing the demand for work sites.For workplaces with limited working space,large carrying capacity and high delivery accuracy,the mobility and operation accuracy of traditional platform have some disadvantages.The quality of docking largely determines the quality,manufacturing cost and cycle of aircraft.Nowadays,due to the problems of large volume,heavy weight and difficult installation of aircraft engine,it is difficult to achieve convenient and fast installation and disassembly of the disassembly vehicle of aircraft engine.Therefore,based on the specific requirement of aircraft engine transport and assembly,this paper takes the transfer platform of aircraft engine as the research object,mainly studies its motion characteristics and motion simulation.In this paper,a kind of aircraft engine transfer platform using universal wheel is studied,which realizes the all-direction movement of aircraft engine transfer platform.Firstly,based on the Omni-directional movement theory and the main technical parameters,this paper chooses the universal wheel as the travel mechanism of the aircraft engine transfer platform,and designs its steering driving strategy.At the same time,in order to achieve this strategy,this paper designs a driving universal wheel that can roll horizontally and rotate vertically,and makes a thorough study and analysis of its steering drive structure and motor selection.Secondly,based on the steering drive strategy,the kinematics model of the aircraft engine transfer platform is established,and the kinematics simulation analysis of different motion of the kinematics model is carried out by using ADAMS simulation software.The simulation results show that the aircraft engine transfer platform based on universal wheel structure can achieve longitudinal,lateral and in-situ rotational motion.Although there are some small deviations in motion,it has good motion stability and provides an ideal solution for the platform working in narrow space.Furthermore,based on the steering driving strategy,the dynamic model of the aircraft engine transfer platform is built,and the dynamic simulation analysis of the difxerent motion states of the center of gravity forward and center of gravity backward is carried out.It is concluded that the center of gravity offset of the aircraft engine transfer platform has certain influence on the motion,but within a reasonable range.Then,a prototype of an aircraft engine transfer platform is manufactured and tested,and the test trajectory is obtained.Compared with the simulation trajectory,it is proved that the test results of the prototype are consistent with the simulation results.The test results show that the proposed steering driving strategy can ensure that the aircraft engine transfer platform has good omnidirectional mobility performance,and the corresponding deviation is small,so it has good practical application potential.Finally,aiming at the existing problems of aircraft engine disassembly and assembly vehicle,varietious existing attitude adjusting mechanism and aircraft engine transfer platform are integrated to form an aircraft engine disassembly and assembly vehicle,which can achieve Omni-directional movement,and the performance test and analysis prove that it can achieve Omni-directional movement.The modified aircraft engine disassembly and assembly vehicle has strong adaptability,fast docking and low conversion cost,which has considerable practical significance.