60mm Automatic Light Mortar Recoil Buffer And Traversing Mechanism Design And Research

Mortar is an indispensable weapon in today’s battlefield, one of which has a small size, light weight, strong firepower and other advantages and then it still occupies a place in modern war. With the development of military science and technology, there is a trend that automatic mortars are replacing and will substitute for the traditional types. The main researches of this work are recoil buffer and traversing mechanism design.Referring to large artillery recoil mechanism and hydraulic shock absorber in industry, this thesis carries perforated bar type recoil brake design and analyzes the influence of parameters to the corresponding performance in cushioning process. In order to make the recoil mechanism provide stable damping force, this thesis derives formulas with orifice area changing with buffer stroke and then discretises orifice area. Concerning hydraulic cushioning dynamic process, this thesis establishes three mathematical models:incompressible fluid dynamic buffer model, dynamic buffer model concerning elastic modulus and dynamic buffer model of a recoil mechanism with an accumulator. While adding an accumulator is intended to supplement leaks and keeping recoil mechanism reset. In dynamic simulation, this thesis utilizes Matlab/Simulink software to compare and analyze damping force, recoil speeds, working chamber pressures and the amount of compressed fluid in three mathematical models.Traversing mechanism design adopts servo valve motor model, steering precise control for angle. In valve-motor mathematical modeling, nonlinear mathematical model is transformed into linear one by Laplace Transformation with analyzing dynamic performance of linear model in Matlab/Simulink. Meanwhile, this thesis also simulates the recoil mechanism in Simhydraulic module and finally makes the comparison.