Design And Research On Lifting Device For Capping Of Bulk Tank Truck

With the rapid development of highways in China,bulk tankers for transporting dry small powder materials have been widely used.However,currently,the capping operation of bulk tankers in the canning process still requires workers to climb to the top of the tanker by manual labor to complete the capping operation.This not only seriously affects the efficiency of the operation,but also poses significant safety hazards.Therefore,in order to improve the mechanization level of the filling process of bulk tank trucks,improve the efficiency of capping operations,and ensure the safety of workers,this article designs a special lifting device for the capping operation during the filling process of bulk tank trucks,and through theoretical calculation and finite element analysis,mechanical analysis,verification,and structural optimization were conducted on the mechanism of the lifting device.Finally,verification was conducted through experiments,including:(1)The background and significance of this topic were elaborated,and the types of lifting platform mechanisms,as well as the current research status of mechanical analysis and optimization design,were introduced in detail.The main research content of this topic was summarized.(2)Based on the characteristics of the capping operation of bulk tank trucks,the working conditions were analyzed,and the problems to be solved and corresponding design requirements were summarized.Two design schemes,folding arm lifting device and mixed arm lifting device,were proposed.The characteristics and advantages of each scheme were compared and analyzed,and a more suitable mixed arm lifting device scheme was selected.Finally,the mechanism was designed and force calculation was carried out,Identified the existing hazardous conditions.(3)Based on the dangerous working conditions of the lifting device of bulk tank trucks,finite element analysis software ANSYS was used to conduct finite element simulation on the lifting mechanism,telescopic mechanism,and detailed structure of the lifting device.The simulation results were analyzed and verified,indicating that the structure of the lifting device basically meets the design requirements,and the structural part with large redundancy in design dimensions was determined.(4)The corresponding finite element models of components with large design dimension redundancy are established respectively,and topology optimization is carried out based on statics analysis.Finally,according to the optimization results and the assembly requirements of each structure,a new structure model is established,and the new model is analyzed by finite element method,which verifies the rationality of the optimized model structure.(5)To verify the accuracy of the finite element model of the lifting device of bulk tank trucks,a local structural stress testing test plan for the lifting device is proposed.The specific process of the test,including the selection of experimental equipment,measurement points,and testing process,is explained.In addition,a corresponding finite element simulation model was established based on the testing conditions,and the simulation results were analyzed and compared with the measured stress data,verifying the effectiveness and accuracy of the finite element simulation results.Finally,summarize and summarize the main content of this paper,and provide prospects for future research.This thesis has 83 figures,27 tables,and 96 references.