Design And Kinematics Analysis Of Abdominal Amplitude Synchronous-Swing Mechanism Of The Large Caliber Naval Gun

The combat environment in the future that contains land, sea and air combat together,higher and much more requirements for the large caliber naval gun system are proposed, such as improving the mobility of rapid response, improving the compatible shelling and firing capacity for multiple types of bombs, and with the stealth and lightweight performance. Due to the restrictions on the ammunition process for the traditional turret shell-feeding system,the problem about the higher rotating mass and the larger turret volume will be raised, and what’s more is that the improvement of fire rate is hampered seriously. Abdominal shell-feeding technology uses center shell-feeding mode, to avoid effectively the too much large of the rotary inertia when adjusting the direction angle, and have to drive the drum magazine at the same time on the turret shell-feeding system, so improves the overall mobility of the artillery system. And center shell-feeding mode also shortens the shell-feeding process effectively, that is much more conducive to the realization of lightweight and stealth of the naval gun system.In this paper, according to the parallel timing method as the theoretical basis, the timing analysis diagrams of the launch system for the turret shell-feeding system and abdominal shell-feeding system are established, based on comprehensive analysis of shell-feeding system of the domestic large-caliber naval guns on active service, and the weaknesses on the firing and feeding process are compared and analyzed; And on this basis, integrating the ideal shell-feeding timing diagram, compatible shell-feeding technology that compatible with both whole standard projectile and separate guided projectile, and with the premise of achieve the compatible firing, the overall scheme design of the compatible shell-feeding platform about abdominal shell-feeding system.Choose inclined loading model of the compatible shell-feeding platform as the analysis object, using the features of a cam in mechanism design, the requirements of any angel feeding on shell-feeding drive system are met, namely mechanical amplitude synchronous-swing mechanism; Applying the numerical solution function of Matlab, the cam curve can be solved by writing M-file; Then based on the kinematic of machinery, carry out the kinematic analysis of mechanical amplitude synchronous-swing mechanism, and velocity curves of positive solution about the rack and pinion in the end of mechanism are completed,the advantages and disadvantages between amplitude synchronous-swing mechanism and control system on realizing synchronize are analyzed, which provide a theoretical basis on the reliability for the shell-feeding.Dynamic analysis of mechanical amplitude synchronous-swing mechanism is carried out according to completed the kinematic analysis, based on D’Alembert principle and Movement law,the mechanism is separated,and depended upon the stress analysis of every separated component, the force and moment equilibrium equations are established, and the constraining forces between components are solved.By using the method of computer-aided simulation techniques, these are graphical method and analytical method,the cam curves are solved and drew, and compared with the curve got from the theoretical analysis method, so that the correctness of the theory of analytic solutions are verified; A physical model of mechanical amplitude synchronous-swing mechanism are established depending on computer-aided analytical method, the velocity curves of amplitude synchronous-swing when the angle of depression is at -10 deg and +30 deg are simulated and analyzed.