Research On The Dynamic Property Of The Drive System Of Transverse Roadheader's Cutting Unit

The hard vibration during the roadheader working impacts the working efficiency and the stability very serious because of the bad and complex working environment. The drive system of roadheader's cutting unit is often impacted by impulsive load, arousing torsional vibration. For the elements are satisfied with static torque, their dynamic stress will be very bigger than the static stress because of vibration. Result in the element's endurance life inducing sharply. Even damage them at work. The force on the dynamic property of drive system about roadheader's cutting unit. The following are the main contents:The paper summery the development of loadheader at home and abroad. The calculation method about force on a single cutting and roadheader had been found according the recording in relation literature. It has been used to determine the load of drive system about roadheader's cutting unit. Take as EBH-120 roadheader for the prototype, the torsinal vibration model have been built by the transfer matrix way. Through programming in the MATLAB software, obtained the every nature frequency and fundamental mode with which the first two natural coincide and potential energy attribute rate of every elastic shaft and modal flexibility.In addition, another model has been built with ADAMS software. Through applied the torque of impulse and sine loading, simulated the model, get the curve of every elastic shaft's deformation, then drawed the curve of every elastic shaft's potential energy. Through this, two weak elastic shafts have been founded which their potential energy is extraordinary bigger than others. Then, utilizing the optimizational function of the ADAMS software, I have optimized the two elastic shaft's torsional stiffness, made the every elastic shaft's potential energy sharply reducing and potential energy's attribute becoming more uniform.The result of research can provide the theory for improving torsional dynamic property of the drive system of roadheader's cutting unit. Above mutuality analysis and research provide method and theory reference for improving working efficiency and design and improvement of decreasing vibration of roadheader.