The Main Parameters Design And Kinematics Analysis On A New Open-Shield TBM Excavation Device

From the history, current status and future trends of urban development around the world, demanding resources and expanding space by underground mining is a modern urban current and long-term sustainability developing general direction.The Open-Shield TBM excavation device as a mechanical, electrical, fluid, light, water, gas and other one of the new high-tech machinery products, integrated the current advantage tunneling technique, abandoned the drawbacks of the single method, broke the current market shield ability to adapt to special geological bottleneck.Therefore, the study of its main structure parameters and dynamic characteristics is imperative.This paper uses experimental methods, theoretical analysis and simulation analysis tools, studied aroundthe new Open-Shield TBM excavation devicestratum adaptation, the main structural parameter design and dynamics characteristics, and other aspects to provide a theoretical basis and method of support for the subsequent structural optimization and independent research and development.Specific research works are as follows:(1)From the geological point of view by the use of sieve analysis and other Rock and Soil Mechanics and engineering experiments around the good self-reliance and relatively low water level clay and pebbles stratums and other typical geological formations conducted in-depth research, clearedthe various strata levels, and on this basis derived digging resistance calculation method.(2) From the structure and adaptability to specific geological conditions, analyzedthe closed chest shield machine and the new Open-Shield TBM excavation device comparatively, clearedthebetter stratum adaptability and stability of the new Open-Shield TBM excavation device, explained the relevant technical feasibility and solutions andconducted related structures’ type design.(3) Based on the TBM excavation device’s main structure parameters built and assembled its three-dimensional model by UG software, detail arrangements of the soil mining processes,broke-down each procedure movement properties of the typical process, analyzed the entire device movement cycle. Based on the simplified mechanical model,using mechanisms method, studied the excavation device by kinematic analysis and dynamic analysis, theoretical derived the relative geometry relationship and the objective function and using the empirical formula calculated maximum bucket digging resistance, provided load boundary conditions for dynamics simulation analysis.(4)Based on the UG-software simulation module, processed excavation device analysis of inverse kinematics, forward kinematics simulation analysis and dynamics simulation analysis, accessed the connecting hinge points’displacements, velocities, accelerations time-varying parameters curves and key hinge pointstime-loading curvesduring the simulation.cleared structure weak links, and laid the foundation for further optimization analysis.