水平井爬行器驅(qū)動機構結(jié)構優(yōu)化
[Abstract]:With the continuous application and understanding of horizontal wells, the economic benefits of horizontal wells are becoming more and more obvious. In horizontal well technology, horizontal well crawlers have emerged as a very efficient tool, and have been used in various kinds of logging now. Perforation, looking for water, is generally welcomed by people, with a good trend of development. The crawler has many advantages. It can carry its own power source, does not need external power, and its own quality is very light, easier to transport, and easier to operate when in use. In addition, the crawler can reach the detection position accurately when dragging the testing instrument, and the cost of logging is greatly reduced because of the advantages of the crawler. By studying the working principle of the traditional crawler and combining with the basic theory of dynamics, this paper puts forward an optimized scheme to design the crawler driving mechanism, and carries on the optimization design and analysis to the crawler drive mechanism. The virtual prototyping technology is applied to the research of crawler, which mainly includes the following aspects: (1) domestic and foreign literature, patent investigation and research. This paper analyzes the technical data and field application of horizontal well crawler, understands the present situation and advanced technology of horizontal well crawler at home and abroad, points out the shortcomings of existing products, and clarifies the development trend of horizontal well crawler. In this paper, the characteristics of virtual prototyping technology and its development status at home and abroad are investigated, and the application of horizontal crawler is clarified. (2) the mechanical model of driving mechanism is established. Based on the basic working principle of the crawler drive mechanism, the mechanical model of the drive mechanism is established, and the various parameters to adjust the traction force are obtained. In the actual operation, under the condition of satisfying the enough traction force, the mechanical model of the drive mechanism is established, and the mechanical model of the drive mechanism is established. The spring force of the crawler should be reduced. (3) the parameterized modeling of the crawler driving mechanism is carried out. Through the optimization of the design variables, the optimum value of each component of the crawler driving mechanism can meet the objective function is obtained. Through comprehensive analysis, the optimal combination of crawler size is obtained. (4) the virtual prototype of the crawler driving mechanism is established, the virtual prototype is assembled, and the kinematics constraint equation of the drive mechanism is established by using the dynamics theory. Through the dynamic simulation of the virtual prototype, the relationship between the diameter of different driving wheel and the different pipe size is obtained, and according to the obtained relationship, The optimum dimension of the diameter of the crawler drive wheel is determined. (5) the gear shape of the crawler drive wheel is optimized by using finite element simulation software, and the optimum parameters of the gear shape are obtained. By optimizing the structure of the crawler driving mechanism and synthetically analyzing, the optimum size of the drive mechanism is obtained, which provides a reference for the improvement and design of the crawler structure in the future.
【學位授予單位】:西南石油大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TE927
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