Automatic Machine Start And Stop Of An Artillery Shot Agencies Analysis

Based on the research of a firing start-stop mechanism for antiaircraft automatic gun, this thesis analyzes the force of a firing start-stop mechanism system. In order to determine the validness of the firing start-stop mechanism, its dynamic characteristics are studied and simulated.Firstly, the force of a firing start-stop mechanism is analyzed and calculated to determine the system driving load. At the same time, the simulated result of the driving system is compared with experimental data, and the comparison results indicate that the design of the driving system can meet the requirement of the firing start-stop mechanism.Secondly, the firing start-stop mechanism system model is established according to the multi-body dynamics theory, and the firing start-stop mechanism system's simulation is equivalent to releasing simulation,recoiling simulation and cocking simulation in accordance with the relevance movement of automat. The simulation results are compared with experimental data, and it is found that the simulation results and experimental data are more consistent, which indicates that the establishment of multi-body dynamic model is valid. At the same time, the influence of hammer catch and pushing slider to the releasing and cocking performance of the firing start-stop mechanism is studied by different angles.Finally, the stiffness and strength of important parts of the firing start- stop mechanism are analyzed through the static and explicit algorithm dynamic method of finite element method. The analyzed data are compared with the experimental results, and the results indicate that the data achieved by the finite element method are more close to experimental data. At the same time, adapted methods are proposed to improve the firing start-stop mechanism, and the methods are verified through computation. This thesis has reference value for the design and improvement of the similar firing start- stop mechanisms.