| In recent years,China’s industrial technology has developed rapidly,and the technological level and research scale of the equipment manufacturing industry have also been continuously improving.For the domestic transportation machinery industry,improving the competitiveness of products has become the key to development.The mobile telescopic stacker is an emerging model in the stacker product series,filling the industry with new vitality for progress.Compared to previous stacker models,mobile telescopic stacker machines have many excellent features,including flexible and convenient mobility;Not limited by the workplace,it can significantly reduce the floor area and improve the actual utilization rate of work space;A convenient form of operation for operation;Efficient and stable material handling capacity,as well as low maintenance costs.However,due to the current industry difficulties,the research and development progress of such emerging models in China is slow,and there is a lack of sufficient design experience and technical reserves.Therefore,this article will analyze the truss structure of a small stacker prototype based on the actual situation of the enterprise,and explore the development of new models.Firstly,theoretical calculations and parameter modeling are conducted based on design indicators,and then mechanical performance simulation is conducted using Ansys Workbench to evaluate the stress strain concentration location.Subsequently,optimization design is carried out and structural reinforcement is added to verify the structural stiffness and strength,and improvement plans are proposed;Then,based on the primary and secondary truss structures of the prototype,the boom structure was topology optimization to obtain the corresponding special-shaped structure,and then the overall truss part of the new model was designed in combination with the requirements of the enterprise for ease of transportation,structural stability and lightweight.Next,this article designs and calculates the conveying capacity and related components of the new stacker material system,analyzes and determines appropriate belt parameters.Then,based on material properties and operating data,the discrete element software EDEM is used to simulate the material conveying performance and verify the passing capacity of the stacker.Further change the conveying capacity parameters and related processing data,explore the impact of input parameter changes on the stacking capacity of the entire machine,analyze the state of materials on the belt and the situation of stacking and dropping,and reasonably select efficient and highly adaptable operating parameters.Finally,the overall scheme design and simulation of the new stacker’s pitch mechanism are carried out,and the loading conditions of the arm frame under different working conditions are analyzed and calculated.Then calculate and select the relevant parameters of the hydraulic cylinder to achieve the overall design of the hydraulic system of the pitch mechanism,and then apply the hydraulic simulation software Fluid SIM for pitch performance simulation.Based on the results,analyze the operation of the hydraulic system and further optimize it.By adding relevant hydraulic components,improve the stability and safety of the system.This article provides theoretical support and technical guarantee for the development of the next generation of large-scale mobile telescopic stacker by studying the truss structure,the conveying capacity of the stacker,and the hydraulic system of the pitch mechanism. |
