Research On Screw Distributor Structure Based On Mixture Movement Uniformity And Filling Stability Of Room For Paver

The asphalt mixtures segregation problem is caused by uneven road surface of the main reasons and is to reduce the deadly disease of pavement performance. In the paving process, the mixture in the screw conveyors distributor will be to the ends of the movement and follow the helical axis, which resulting in mixed-grain mixing of transition and the phenomenon of segregation. The most serious asphalt paving segregation appears in the scene. Especially, because fabric's structure mismacths with the helical screw shaft speed, paver speed, the speed of scraper plate interaction in construction.In the paper, spiral distributor asphalt paver asphalt mixture movement within uniformity and filling on the basis of the stability of in-depth analysis to fully explore the fabric's structure which influences the movement of the mixture from the spiral distributor paving tablets material problems in the process of starting, in ensuring uniform aggregates and stable conditions, establishes variable bore variable pitch design of the screw axis parameters of the calculation model. The analysis which is under the variable pitch reducing the movement of aggregates uses screw axis parameter design engineering application examples to design the screw shaft driven by three-dimensional material flow analysis model and the function based on area weighted average mix of theory. By numerical analysis and simulation to study the work of screw shaft speed, screw diameter/pitch ratio of the three-dimensional particle flow and mixing of effect explore the screw shaft speed, material handing performance of the relationship between the axial field which is the weighted average function of the size distribution of cloud and the related conclusions for reducing variable pitch screw axis. It provides a theoretical basis for the structural design. In addition, the significance of this study can guide the distributor of the improvements and give the construction enterprises in the process of paving the road to reduce the segregation of asphalt mixture.