Design And Analysis Of Frame And Suspension Of The Rail Go-kart

The track go-kart is a new type of electric entertainment vehicle.Its special track is equipped with tracks that can guide and power the vehicle at the same time.Compared with the traditional fuel Kart,the track Kart has better performance in terms of safety,economy and environmental friendliness,so it has a good development prospects.In this paper,according to the characteristics of the go-kart model,the foundation work of frame structure selection,frame space structure design,frame longitudinal and transverse critical dimensions calculation and material and processing mode selection are carried out.Secondly,the digital 3D model of the frame is constructed on the UG software platform.Finally,using the ANSYS Workbench tool to static load analysis of the frame model,it can be calculated that the maximum bending moment generated by gravity on a single beam is 161 N M,the maximum bending moment received at the turn is 145 N M,and the lateral inclination is 3.57 °.The displacement and stress cloud diagram of the frame can be analyzed by finite element simulation to check whether the strength and stiffness of the frame meet the requirements and provide a basis for the improvement and optimization of the frame structure.In this paper,the maximum displacement of the joint is 0.352 × 10-6m and 0.725 × 10-6m when the frame goes straight and turns,respectively,and the equivalent stress is less than that of the material and meets the relevant requirements.The force conditions of the frame under four working conditions,namely bending,torsion,bending combined torsion and emergency braking,were simulated respectively,and the joint displacement map and stress cloud map were obtained.Among them,the maximum deformation amounts of torsion,bending,torsion bending and emergency braking were 0.09 mm,0.14 mm,2.4 mm,and 0.14 mm,respectively.The maximum stress values were 14.23 MPa,47.4 MPa,and 147 MPa.And 49.2 MPa,which meet the relevant requirements.Compared with the existing suspension,the scheme is demonstrated.In this paper,the non-independent suspension form of steel spring is selected,the traditional multi-sheet steel spring with linear characteristics is used,and the vertical symmetrical arrangement method is adopted.The section of plate spring blade is selected.rectangular section,The end adopts a trapezoidal(piece end tangent)structure;The main film adopts the most common form of the upper ear,and the second piece does not use the form of Baoer;Self-lubricating spring pin structure is adopted on the suspension ear and spring pin structure,and the diameter of the center bolt is designed as 8mm.The digital design of the suspension system is carried out,the structure of the key parts of the suspension system is determined,and the assembly form of the frame and suspension is carried out.The frequency bias of the front and rear suspension was selected as 1.3 Hz and 1.5 Hz respectively.The non-reed load quality was set to 104 kg,the full load arc height was 15 mm,the total number of films was 3 pieces,the width of the front plate Reed was 45 mm,and the width of the rear plate was 66 mm.The thickness is 5mm;The lengths of the first,second,and third plate Springs are 560 mm,395mm,and 230 mm,respectively.The strength and stiffness of the steel spring are checked.In emergency braking conditions,the maximum stress σ Max of the front suspension spring is 802.6 MPa & lt;1000 MPa;At the start-up condition,the maximum stress σ Max of the rear suspension plate spring is 890.6 MPa & lt;1000 MPa,the results show that the expected indicators of the project are met.