Research On The Dynamics Of The Airborne Roof Bolter On EBJ-160 Roadheader

With the development of the industry, the priority position of coal promotes unceasingly in national economy, the scale of production also expands unceasingly. Since the 20th century, the mining coal mechanization and the synthesizes mechanized technology have been gradually traced by the major coal-mining country in the world. With the application of high production and high efficiency coal-mining machine in the coal mine production, the mining rate of the underground working surface enhances greatly, the working surface advancement speed is also becoming quicker and quicker, This requires to speed up completing roadway in order to achieve the extraction of balance. The domestic and foreign production practice has been proved: only achieve boring and bolting integration to meet this requirement. Therefore, researching and manufacturing new types of efficient roadway bolterminer, achieving boring and bolting integration to speed up completing roadway technology has become the main direction of the heading mechanization development.Based on the analysis and the research of the development of the existing domestic and foreign bolterminer, the machine-type characteristic and the working condition of EBJ-160 roadheader have been analyzed, and the dynamics of roof bolter on EBJ-160 roadheader at work has been researched. Simplified mechanical and mathematical models of the drillstring longitudinal vibration of roof bolter on EBJ-160 roadheader were built,which used two methods of differential equations and the finite element at the same time.Lagrange formulation has been used to build the vibration math model of the roof bolter on EBJ-160 roadheader. Simplified 3D model of the roof bolter on EBJ-160 roadheader was finished by CAD software SolidWorks. Simplified 3D model was simulated by ADAMS,Some simulation datas were gotten and they were analysised and discussed. The result indicated: The vibration of the drill tower and the bracket of roof bolter on EBJ-160 are most affected.This article optimized the structure of the roof bolter on EBJ-160 roadheader finally, the rail-mounted the axial float joint way were used by the optimized drill tower and the column. The flexibility connection way of installing the lead-rubber isolation bearings was used between roof bolter and EBJ-160 roadheader, thus to realize boring and bolting integration to provide the powerful guarantee.