The Analysis And Optimization Of Steering System For The Steering Wheel Type Tricar

Along with tricar of gradually universal in the village, and the customer lives continuously raising of the quality, the request of the customer to the tricar function is also more and more high, at the time of acquiring good power and economy, also start paying attention to manipulate a stability and drive going smoothly, especially drive a safety. The traditional tricar steering system designs already hard satisfy a tricar and drive a comfort, safety and manipulate the request of stability etc., as a result the 3D graphics software UG(Unigraphics) and many body dynamics adopting a forerunner analyzes software ADAMS(Automatic Dynamic Analysis of Mechanical System) and combines together to the steering system of studying the tricar is very necessary.The UG is that UGS is a style of underneath important CAD software, it is to gather CAD/CAE/the 3D parameter of CAM integral whole turn software, is one of the world's most advanced calculator assistance design, analysis and manufacturing software nowadays, extensively Be applied to industrial realms such as aviation, aerospace, car, shipbuilding, in general use machine and electronics etc..The machine system is analytical software ADAMS is an applied extensive machine system dynamics to imitate true analysis software in the world. Among them, the most extensive in the application in the car industry, have become each main car company in the world currently and it the main dynamics of zero parts suppliers imitate true software.This text outlined that the tricar is in the position of car industry currently and in the future several years of development trend, the necessity of steering wheel type tricar steering system research, develop trend, and take into simple introduction to the steering system of steering wheel type tricar; briefness said a calculator assistance design and lend support to analytical advantage, development and application present condition; Designed an UG of software to do simple introduction to the second to none calculator assistance, and explained its the characteristics of use circumstance and software oneself in each realm; Elaborated many body dynamics that the applied circumstance being medium designing in the car and it development history, and analyzed software ADAMS to do to many body theories and many body dynamics simple introduction, as to it's characteristics and calculate way carried on elucidation.This text carried on detailed analysis and elucidation to the steering framework of steering wheel type tricar on the foundation of briefness said tricar the whole car structure, and for canning attain the purpose of analyzing the steering framework, make use of have been already known of the parameter , in the UG environment, build up the steering wheel type tricar the whole car in detail 3D model, and will build up in the UG of the whole car the 3D model leads as Parasolid format(.x_t), then pass the ADAMS software connects a people mold piece from the sketch taking and duct into the Parasolid format to the ADAMS. In the ADAMS environment, for raising to transport speed, under the premise that not influence analytical result, carried on the simplification of certain degree to the whole car 3D model, and build up 10 to revolve a pair to the whole car model, 14 ball pair, 5 ambulation pair, 8 fix pair, a tiger gram ten thousand to stanza pair, a point-noodles controls a pair, a consociation pair waits stipulation and finally established many body dynamics of the whole car of the steering wheel type tricar model. Then according to the whole car of above establishment many body dynamics analysis model, make use of ADAMS/View software imitate true front round top and bottom jump about in the middle of the process car wheel, lord sell, the variety circumstance of steering system, hang a direction to fasten, change direction a pole to fasten and the mutual influence of the of the whole car, and reduce to flap a being subjected to of machine dint circumstance, attain the purpose of the function of evaluating the original car steering framework thus, discover an existent problem, and put forward to improve a project, then according to the characteristics of the steering wheel type tricar steering framework, the foundation analyzing from the kinetics of steering framework sets out, adoption establishment change to measure more, much control, list target of excellent turn the method carried on to the steering framework of the steering wheel type tricar excellent turn a design.This text is mainly imitating to do the following work in the true analysis:1) pass to up and down jump about(-100~100 mm) in the car wheel to the original steering system in of imitate to really exercise, output caster angle, caster monment arm and wheelbase and front axle to the Y that reduces to flap a machine to the variety curve of the dint in cent, then as to it's analytical, discover the existent problem in the original steering wheel type tricar steering framework. Discovered in this text that the caster angle and the wheelbase variety in the original steering system has great capacity and before axle to the Y that reduces to flap a machine to the dint value of the dint in cent is bigger.2) the problem aiming at detection, design according to the car, foundation theory with theoretical car and working experience, propose four kinds of solutions, namely: Adjust the initial value of caster angle as 16.5°;Adjust the initial value of caster angle as 17.5°, will reduce the length of flapping the machine to adjust to 595 mm; Adjust the initial value of caster angle as 17.5°, front round the center sell with lord of the distance adjusts for the 75 mm, will reduce the length of flapping the machine to adjust to 590 mm ;Adjust the initial value of caster angle as 17.5°, front round the center sell with lord of the distance adjusts for the 85 mm, will reduce the length of flapping the machine to adjust to 590 mm.3) one by one in order carry on imitating to the project for putting forward really, analysis, study above various adjustment project to the caster angle, caster monment arm and wheelbase and front the axle finally make sure a project to the Y that reduces to flap a machine to the influence of the dint in cent three superior, will soon the initial value of caster angle adjust to 17.5°, front round the center sell with lord of the distance adjusts for the 75 mm, will reduce the length of flapping the machine to adjust to 590 mm.4) Adjust the whole car of the steering wheel type tricar 3D model in the UG according to the superior project of assurance, and lead as Parasolid format (.x_t), and then pass the ADAMS software connects a people mold piece from the sketch taking and duct into the Parasolid format to the ADAMS. Many body kinetics that re- build up the steering wheel type tricar in ADAMS model, and carry on imitating true analysis, analysis result with excellent turn a project unanimously.Use ADAMS/View mold piece build up 3D parameter to turn steering system model, so, the value that can pass change importation parameter can expediently carry on a modification to the steering system and re- imitate really, can contrast the variety circumstance of an each function of steering system with front and back adjustment parameter very conveniently thus. The each pole piece in this text model is all applied ideal of just body to replace; The tire in the model is also seen as just body, so analyze the result was opposite to physically have certain discrepancy, but this text in of basically was a qualitative analysis to the analysis of the steering system, so the influence wasn't very big. But need to consider these impact factors in the work of next moveThis text is production, study and research to combine, use theory and experience analytical, research problem, directly combine together with production fulfillment, can guide production fulfillment, provide a theory for the improvement of the steering system of steering wheel type tricar basis. The whole car building up in the text imitates the design, development and function evaluation of steering wheel type tricar steering system of true analysis model to modern to contain important instruction meaning and makes design, develops, solution of function problem, production, experiment etc. All even have to aim at sex.This text is 3D graphics software the UG analyze software ADAMS to combine together with many body dynamics, and apply to a steering wheel type tricar steering system for the first time of excellent turn a design in, this is trying of a brave, lay certain foundation for the analysis design of aftertime's steering wheel type tricar steering system.