基于動力學(xué)的立井剛性罐道導(dǎo)向平順性若干問題研究
[Abstract]:With the development and progress of mining industry, more and more attention has been paid to the safe and efficient operation of shaft hoisting system. The ride comfort of the rigid tank path guidance system is the main factor that limits the performance of the system, and has attracted the attention of domestic and foreign experts. The whole structure of shaft hoisting system is complicated and various performance factors are coupled. In order to study the ride comfort, we must start with the overall structure of the system that affects the ride comfort, understand its structural characteristics, and model and analyze the key factors reasonably. This paper takes ride comfort as the starting point and dynamics as the research method, and develops the problem: 1 from the following three aspects. Taking friction wheel, wire rope and lifting vessel as the main research contents, a dynamic model of vertical vibration system is established, which is a linear multi-degree-of-freedom time-varying system model. The model is discretized into a series of instantaneous systems and solved numerically, and the transient response of the model is analyzed by incorporating the velocity curve equation into the specific working conditions of a mine. At the same time, the vibration of different working conditions and running to different positions were compared and analyzed. 2. 2. In this paper, the typical fault excitation information of tank track equipment for vertical shaft track is analyzed, and the surface quality information of tank track is summed up as surface quality, bad joint and insufficient stiffness, and so on. The horizontal dynamic model of rigid tank tunnel, roller ear and lifting vessel is established. Several kinds of typical incentive information which affect ride comfort are put into simulation analysis, and the influence degree is compared quantitatively. 3. The key component of ride comfort was optimized, and the statics and dynamics models were established. The nonlinear curve of its overall stiffness is obtained by static modeling. A two-degree-of-freedom dynamic model of roller ear is established around the problems of dynamic stiffness and natural frequency, and the general random signals reflecting the surface characteristics of the tank track are simulated. The material and structure of roller can are further optimized. Based on the dynamic model and simulation analysis in this paper, the influence of various factors on the steering comfort of vertical shaft rigid tank track is analyzed, and the method of preventing and controlling these factors is provided, which can provide the theoretical basis for the related engineering design.
【學(xué)位授予單位】:合肥工業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2016
【分類號】:TD262.4
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