Design And Study On Buffer Seat System Of Toll Booth

With the rapid development of highway construction and the growing number ofhighway toll station, more and more attention has been paid to the highway toll boothsinternal security for the staff.For Staff’s passive safety protection of the the toll boothssecurity system, internal buffer seat system plays a vital role.The goal of this project is to study a security buffer seat based on damping principle of asix degree of freedom platform.When there is a toll booths collision accident, as vibration istransmitted to the buffer through the toll booth floor, the elastic elements of the buffer seatsuspension system absorb and stored energy, delaying the energy transfer to the seatsurface,at the same time,damping elements of the suspension system consume energy,reducing the intense movement of the seat surface which achieves the protection purpose forthe staff.First, estabalish the general mechanical model and the mathematical model for thestaff-seat suspension system. Through derivation and calculation for suspension system’sinertia matrix, stiffness matrix, and damping matrix, the dynamic differential equation of thestaff seat suspension system is gotten.Then, based on the buffer seat performance requirements and technical indicators, bycomprehensive analysis and comparison for the chosen six degree freedom platform, select asuitable buffer seat suspension structure considering the following aspects:reasonablestructure, coupling degree of the natural frequency, the damping effect simulation for sixdirections and so on.On the basis of the theoretical study of the buffer seat suspension system, the buffer seatoverall structure is designed. Emphasize on designing shock absorption deviced, rotationallink device and the horizontal auxiliary platform device.To study response of buffer seat under impact and verify the structure of the design,analyzes the impact acceleration and displacement response of a seat in a different direction,and calculated to have the greatest impact on the human body frequency by using the finiteelement method, in order to avoid the resonance frequency and the frequency is close to the seat modal analysis to obtain the natural frequencies and modes of seat. Finally, on the seatstatic analysis, to test whether the design structure up to standard requirements.