Design And Kinematic Analysis Of Arch Installation Equipment Working Mechanism

In tunnel construction,in order to realize the stability of surrounding rock,the IV and V grade rock generally use the arch as the initial support of an important component.At present domestic tunnel construction,the arch is generally installed by artificial and with the aid of the auxiliary platform,the labor intensity is larger,safety is poor and the work efficiency is lower.With the development of society and economy,labor costs is increasing,mechanized construction has become a trend.Therefore,there is an urgent need for developing arch installation equipment for the complex tunnels environment in China to realize the mechanized operation of arch installation.In this dissertation,through the research analysis of the domestic arch installation equipment,foreign arch installation equipment and the construction technology of arch installation,proposed the design requirements arch installation equipment which adapt to the bench method tunnel construction technology at home,then completed the overall scheme design,and the main technical parameters are determined.According to the characteristics of step construction method,the arch installation arm which is one of the key components of the equipment was designed.Through the analysis about the work requirements of the arch installation arm,determined the the risk conditions of structure and realized the strength check of this component based on the finite element analysis software ANSYS-Workbench.The kinematic model of the working mechanism is established.According to the D-H method,listed the kinematics equations,calculated the working space,and drawn the projection map.The results show that the equipment working space meets the requirements of the tunnel construction design.Finally,based on the virtual prototyping technology,used the kinematics and dynamics analysis software SIMPACK to do motion simulation of the work mechanism,to get the displacement,velocity and acceleration curves of the detection point,which provides theoretical basis for product technology design.