Research On Vibration Characteristics Of Roadheader Cutting Unit Based On Virtual Prototype Technology

When the roadheader is tunnelling the hard rock, the working conditions is bad and the load is complex, allowing the pilot risk based on the physical prototype large and expensive, while useing virtual prototyping technology for modeling and simulation can get the full performance of the product assessment before the physical prototype be produced and gain system-level optimization products.Through the construction to ADAMS virtual prototype technology as the core environment, and establish the rigid - flex coupled virtual prototype vibration model of roadheader cutting unit working under the complex conditions of coal seam; use Matlab software to simulate the frequency-domain signal load curve similar to actual working conditions in the various frequency components, and add to the virtual prototype model; through the imposition of harmonic signal and random vibration signal , using ADAMS / Vibration module to do the vibration simulation analysis for prototype model and Extract the low-order modal parameters of the rotary bed-type ; predict the vibration characteristics of the roadheader, put forward in the excitation frequency that should be paid attention to in practical work.This study provides a clear quantitative basis for the optimization of the system of roadheader cutting unit , and recommends optimization solutions to improve the design, will help in the complete control of the product's performance before the physical prototype is manufactured , greatly reduces the new product R & D costs, provides a new method and means for design and research of large industrial and mining equipment working under the complex environment , it has great application prospect.