铰接式无轨胶轮车全液压转向系统研究
[Abstract]:As one of the important auxiliary transportation equipment, hinged trackless rubber wheel vehicle has been widely used in various coal mines. Considering the special conditions of underground roadway, trackless rubber wheel vehicle needs frequent steering. In this process, the steering system is the decisive factor, so it is particularly important to carry out in-depth research on the steering system. In this paper, the hinged trackless rubber wheel vehicle is taken as the research object. Firstly, the working principle and steering load of the full hydraulic steering system are analyzed. Secondly, the dynamic and kinematic analysis of the steering process of the hinged trackless rubber wheel vehicle is carried out. After simplifying the hinged trackless rubber wheel car studied in this paper, it is mainly composed of the front car body, the rear car body, the steering cylinder and the tire and so on. The vehicle model of the hinged trackless rubber wheel vehicle is established by using the 3D modeling software Pro/E, and all the parts are assembled with its own assembly function, and some simple constraints are defined between the mechanisms. After converting it into the intermediate format, it is introduced into ADAMS to further define the attributes of the rigid body. Impose reasonable constraints and drive. By adding different drivers to the dynamic model, the effects of vehicle body deflection angle, internal and external wheel speed ratio, steering cylinder flow rate, load and speed on steering radius and steering transition process of trackless rubber wheel vehicle are analyzed respectively, which provides a theoretical reference for the design research of bonded trackless rubber wheel vehicle and the design of mine roadway in the future. After that, the change of the position of the joint point in the process of in situ steering and the relationship between the expansion of the left and right cylinders in the steering process are analyzed. Finally, the steering characteristics of the hinged trackless rubber wheel vehicle are analyzed, and the factors that can affect the insufficient steering characteristics are found and verified. Through the research of this paper, the turning process of the bonded trackless rubber wheel vehicle is simulated, the factors affecting the turning radius are found, and the steering characteristics are analyzed, which provides a theoretical basis for the design and performance analysis of the steering system of the hinged trackless rubber wheel vehicle.
【学位授予单位】:西安科技大学
【学位级别】:硕士
【学位授予年份】:2015
【分类号】:TD525
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