TBM滾刀軸承力學(xué)分析與結(jié)構(gòu)優(yōu)化
[Abstract]:In the construction of tunnels and underground projects, the full-section rock tunneling machine (TBM) has the characteristics of high automation, safety and efficiency and continuous operation in super-long tunnels, which represents the development direction of modern tunneling technology. In TBM construction, the main rock breaking tool is disc hob. It is proved by a large number of engineering practices that the tool damage is the most important factor affecting the tunneling efficiency. In tool damage, hob bearing damage is the most common form of damage. In this paper, the structure and rock breaking mechanism of disc hob are introduced briefly, and then the basic performance of hob bearing is analyzed by using the mechanical formula of hob force in Colorado Institute of Mining and Technology. On this basis, I carry out an internal-to-outside structural optimization design for hob bearings. Firstly, the main structure parameters of hob bearing are optimized by data optimization software. The basic rated dynamic load of the bearing is selected as the optimization objective, and the main parameters are optimized by using the existing constraints. Then under the condition of loading, the different arc degree and convex metric of hob bearing roller are analyzed, and the optimum arc degree and convex metric of roller under different loads are obtained, which provides a certain basis for the design of hob bearing. Finally, by using Ansys Workbench software, the influence of interference on the initial clearance of hob bearing is analyzed, and the influence of working clearance on friction moment and life of hob bearing is obtained. For hob bearings in the design clearance and assembly to provide certain reference and help.
【學(xué)位授予單位】:大連理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2012
【分類(lèi)號(hào)】:TH133.33
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