Design And Analysis On Mechanical System Of Lift-type Non-avoiding Double-deck Parking Equipment

With the rapid development of the automobile manufacturing industry,the number of cars is increasing,and the problem of difficult parking appears.In this context,mechanical parking equipment arises at the historic moment.The simple lift type mechanical parking equipment has the characteristics of small area and flexible layout,so this problem can be alleviated very well by it,however,the existing simple lift type mechanical parking equipment hinders the development of itself because it has the defects of avoiding and waiting for each other to access the upper and lower parking spaces.In this paper,a kind of lift-type non-avoiding double-deck parking equipment is designed,it not only saves space,but also does not need to consider the order of vehicles entering and leaving the upper and lower parking spaces,and it does not need the driver to reverse the car into the warehouse,which reduces the parking difficulty.It is of great significance to alleviate the problem of parking difficulty.In this paper,firstly,the TRIZ innovation theory is used to analyze the problem of the simple lift type mechanical parking equipment,the problems are converted into the corresponding technical contradictions and the contradiction matrices are listed.Accorging to the analysis of the seven innovation principles recommended by TRIZ theory,the principle of transition to another dimension is applicable to solve this problem.On this basis,combined with the parameter requirements of the mechanical parking equipment,an innovative lift-type non-avoiding double-deck parking equipment is proposed,and the overall design scheme of it is determined.Secondly,according to the overall scheme of the design,combined with the relevant principles of mechanical design,the structure design,force analysis and calculation of the carrier plate,translation frame,slider and column of the lift-type non-avoiding double-deck parking equipment are carried out.Through the relevant theory of material mechanics,the theoretical strength of translation frame,slider and column is calculated,and it is concluded that the designed translation frame,slider and column structure meet the strength requirements.According to the design parameters of the lift-type non-avoiding double-deck parking equipment and the load of each part,the hydraulic drive device in the translation device,the chain drive device in the lifting device and the wire rope anti-overturning device in the safety device are selected,designed and checked,and the translation,lifting and safety guarantee devices that meet the design requirements of the lift-type non-avoiding double-deck parking equipment are obtained.Finally,the motion simulation of the lift-type non-avoiding double-deck parking equipment is carried out through the Motion Simulation module in the UG NX software.The results show that the motion of each part is stable and there is no interference between the parts.The finite element analysis of the key components of the equipment is carried out through the Advanced Simulation module,and the results show that the strength and stiffness of each part can meet the normal working requirements of the equipment;the dynamic modal analysis of the key components of the equipment is carried out,and the natural frequencies and vibration modes of each part are obtained,which provides a research basis for avoiding resonance.The topology optimization of the translation frame,slider and column is carried out respectively,the mass of the optimized translation frame,slider and column is reduced by 23.80%,6.60%and 7.92%respectively,and the total mass of the optimized components is reduced by 20.22%.The finite element analysis of the model after topology optimization is carried out,and the result show that the optimized key components not only meet the product design requirements,but also achieve lightweight.