Dynamic Simulation Study On Cutting Gearbox Of EBZ160Boom-Type Of Roadheader

Roadheader is a kind of machine which is mainly used in crushing coal and rock. It can finish several functions such as cutting coal and rock, loading and transfer, automatic spray dusting and moving at the same time, The mining machinery was wildly used in mining coal, tunnels, subways and other fields. As an important component of cutting unit, the greatest features of planetary gear transmits rotating speed and torque which come from motor to the cutting head. Therefore, whether the planetary gear can run well decides whether the roadheader can work efficiently. Reducer should have a larger gear ratio and transmission efficiency, but also has a smaller volume and mass, as well as a good working stability on the condition that there are appropriate environment and enough work strength.In this paper, studying the every aspect of performances of the EBZ160type planetary reducer is the main task. With the combination of Pro/E, Adams and ANSYS software, the reducer was explored and designed. Then the paper studies the kinematics and dynamics simulation of the cutting speed reducer with the tool of virtual prototyping technology. At the same time, the key components inside the reducer was conducted to take a transient dynamic analysis, static analysis, modal analysis and fatigue life analysis, which means to ensure that tunneling machine to work properly. Meanwhile, such experiment result can provide a theoretical basis to optimize the design of the roadheader reducer. Firstly, the paper outlines the development of the current situation at home and abroad of the roadheader. In an exhaustive understanding all aspects of the situation of tunneling machine performance such as its performance, structural features and working principle, the paper analyze the roadheader reducer in the system-level analysis to expect to achieve the best results.Secondly, the paper builds a three-dimensional solid modeling to each part of roadheader reducer, and virtual assemblies them and takes interference checking after completion of the assembly. After ensuring no interference influence the assembly, the next work can be conducted.Then, the experiment imports virtual prototype model of the cutting reducer into the ADAMS to take kinematic simulation. Each parts of the transmission ratio levels obtained by simulation are compared with theoretical calculation values to check whether the movement of the reducer meets the actual situation. Considering the moving parts and the forces of the high speed reducer of given load by dynamics simulation is an important task to see whether the movement and the forces is correct. On this basis, the actual force of various parts of the reducer comes out in the course of their work, which is conducted at low speeds and varying load effect by dynamics simulation. What have been done provides sufficient data based for the subsequent finite element analysis.Finally, the key parts of the planetary gear unit is analyzed, namely application of ANSYS software for a planetary gear statics analysis, modal analysis and bending fatigue strength analysis and application of ANSYS-Workbench for two planetary gear mechanism transient dynamic analysis. The analysis is to verify whether all internal parts of cutting reducer meet the requirements and service requirements.