Design & Capability Analysis On Safeguard Structure Of Road Roller Cab

The design of the cab of the engineering vehicle must consider the overall layout of the vehicle and the cab,the design of the structure,the structural performance requirements and the ergonomics.The cab safety structure used to ensure the safety of driver driving is an important composing unit of the cab,It mainly includes Roll-over Protective Structures and Falling Object Protective Structures.It is of great significance to study how to quickly design the cab safeguard structure to meet the safety performance.In this paper,a series of single-wheel vibratory roller cab safeguard structure design as the object of study.Based on the theory of Rapid Response Design,the cab Product Family Planning,the cab Module Division and the Interface Design are carried out,and the modular module of the cab is established.The parameterized variables that affect the performance of FOPS&ROPS are defined,and the module structure of the cab safeguard structure module is based on the parameterized variables.Based on CATIA and HyperMesh,the safety geometry and finite element analysis model of 28T roller cab are established respectively.Based on the nonlinear dynamics control equation and the explicit center differential algorithm,the Radioss solver is used to solve the explicit nonlinear problem.The deformation mode and the stress distribution of the structure are obtained after the initial lateral loading.The conclusion is that the initial structure is weak locally and the strengthening module is designed to enhance the overall strength and rigidity of the structure.The results show that the load and energy absorption capacity of the ROPS meet the standard requirements in the lateral,vertical and longitudinal loads respectively.The hammer impact of FOPS was simulated and the displacement curve and the stress and strain distributions of the falling hammer center were obtained.The thickness parameters of the roof were improved,and the impact resistance of FOPS was met.The safeguard structure of the cab is made into a physical prototype,and the performance of the FOPS&ROPS is evaluated.The performance is standard and the FOPS&ROPS is certified.Compare the simulation analysis and test data,evaluate the simulation model and analyze the causes of the error.In this paper,the design,performance simulation,improvement and laboratory test of the cab safety structure are carried out,and the design idea and method of the safety structure of the cab of the roller are formed.