The Structure Improvement And Performace Simulation Of Non-Linear Seat-Suspension

Tractor and truck usually produces strong vibration when they are working,this vibration badly affects the driver's health and control stability. To solve theproblem one of efficient way is use seat-suspension, but most of seat-suspensionis linear, this style of seat can hardly meet both vibration stroke and therequirement of human-body riding comfort simultaneously, while the non-linearcharacteristic's seat-suspension can overcome this problem. So researches onnon-linear seat-suspension are very important and have significant meaning inboth theory and practice.According to the random vibration theory, the article simplifies thebody-seat system model. Though the acceleration power spectrum, the authoroptimizes the academic elasticity characteristic curve.Following the machine connection, the author designs two styles ofseat-suspensions, and calculates the figure of the curve-plate which is the mostimportant part of the second style of seat-suspension by using Matlab software.Further more the author designs the wring-spring assembly and weight-adjustingassembly for both seat-suspensions. The movement of two seat-suspensions isanalyzed by using I-DEAS software and draws the moving curve. The finiteelement model of wring-spring assembly is established and solved the fatiguelife.Base on the design drawing, two seat-suspension entities is manufactured.The article exerts force test to seat-suspensions and following the academicelasticity characteristic curve amends two curve-plates. The first seat-suspensionis placed on NJ6596AEF car and the date of road driving easement is tested andgetting the conceived result.