The Mechanical Structure Design, Analysis And Optimization Of Combinational Dynamic LED Display Wall

With the universal application of intelligent technology and information technology, new dynamic display systems show a trend of diversified development, they attract more and more people and shine in the exhibition industry. A mount of professional companies and research institutions give up the traditional form of exhibition, and make deep study on the patterns of exhibition with intelligent control and multimedia projector technology. The large LED screens, presented for the new patterns, bring customers unique and innovative visual impact and spiritual enjoyment.This paper puts dynamic display wall as research direction, and designs a dynamic LED screen display unit which can move linearly and rotate at defined angle. A mount of display units arrange in order to form the large LED display wall. Combining with control system and fusion technology, the display units take actions to transform the shape of the whole display wall, at the same time, the display screens form a complete image with seamless splicing technology. Through changing the shape of wall and images on the LED screen, the display system can realize true and accurate three-dimensional dynamic display scenes, and shows the beauty of mechanical and art.First of all, this paper compares the advantages and disadvantages of different transmission modes about linear motion mechanism, and determines the optimal transmission way to complete the mechanical structure of display unit, then manufacture some unit sample for testing, the results prove that display units meet the requirements. Secondly, this paper makes use of Pro/E software to accomplish the solid model of display units, and import the model to ANSYS Workbench software, then complete static and dynamic finite element analysis of the telescopic belong to telescopic arm, The results show that the telescopic finite model is correct and dynamic load applied on telescopic do not affect the display effects of units. Finally, to achieve lightweight design, this paper completes multi-objective optimization and topology optimization of the telescopic arm. The results show that not only the quality of telescopic arm has reduced, but also the performances of display unit have improved. Through designing the display unit of LED display wall, and analyzing its telescopic arm with finite element methods, we verify the rationality of mechanical structure design of display units, and realize the lightweight design with optimization methods, this achievements will have an important guiding significance on the development of LED screen wall as well as dynamic display systems.