Research On Micro-Power Activation Mechanism

Dispersed individual combat or small-scale conflict wars are the main characteristics of modern warfare.Most of these wars are carried out based on various complex bunkers and buildings on the battlefield.For example,urban warfare is suitable for this type of warfare.The development of light weapons has become an important direction of weapons research in various countries.The miniature fuze and the fuze power activation mechanism directly determine the damage capability of this type of ammunition.Therefore,low-overload,miniaturized fuze power activation mechanism has become a design difficulty for light ammunition.Taking a certain type of grenade as the research background,in view of the shortcomings of traditional fuzes and fuze power activation mechanisms,such as high overload,large space volume,and low perception of the environment,this paper designs a miniature with low overload and high perception of environmental incentives.Power activation mechanism.The activation mechanism integrates the mechanical activation device and the chemical power source,which greatly reduces the overall volume of the activation mechanism;the displacement of the inertial spring-inertia ring is used as the basis for the release of the mechanical activation device to achieve Activate the organization’s ability to accurately perceive environmental incentives in a low-overload environment.In order to provide a theoretical basis for the design of the low-overload micro-miniature power activation mechanism,this paper analyzes the force of the movable parts of the micro-miniature power activation mechanism,and establishes mathematical models for the inertia ring,mass and other moving parts;The collision between the ampoule and the buffer spring establishes a basic dynamic model.The simulation calculation of the micro power activation mechanism is carried out.Use Adams dynamics simulation software to perform dynamics simulation calculation with 2000 g recoil acceleration impact as the environmental force that activates the mechanism,and then obtain the displacement,velocity and acceleration dynamics characteristics of movable parts such as inertia ring,mass,safety ball,etc.;By simplifying the model,the maximum collision force between the ampoule and the buffer spring is 213.455 N.The workbench finite element analysis software was used to calculate the stress analysis of the ampoule under the firing overload.The calculation results show that the ampoule can be broken reliably under the impact of213.455 N,and the activation mechanism can reliably activate the battery.The prototype was tested and verified.The activation mechanism was hammered with a Marschet hammer.It was verified that the activation mechanism can be reliably released when the launch overload is not less than 2000g;the impact test on the impact table verifies that the activation mechanism is in vibration and shock.The ampoule and the mass block can be closely connected without falling off;the power activation mechanism is dropped from a drop test to verify that the activation device is not released from a height of 1.5m,which verifies the safety of the power activation mechanism;static discharge test verification Improve the reliability of chemical batteries.