车载炮底盘载荷分离设计技术

Launch Load Separation Design Principle of Truck-Mounted Howitzer Chassis

发射载荷的传递控制是车载炮轻量化高机动设计的关键,一直是火炮研究领域的热点问题。为了控制发射载荷的传递,依据车载炮的构型特点,提出了发射载荷作用下底盘的载荷分离设计技术,构建了发射载荷分离满足的约束条件;基于车载炮的拓扑结构,建立了车载炮发射的动力学模型,给出了边界条件、放列协调条件和约束条件;通过对比车载炮发射过程关键部件的受力和响应的计算结果和试验测试结果,验证了所建立模型的正确性;不同支撑结构条件下轮胎受力以及射击稳定性分析结果表明:车载炮的载荷分离设计不仅可免除车载炮发射载荷对底盘轮桥系统的影响,为车载炮具有与底盘相同的可靠性提供了保障;此外,载荷分离设计对车载炮性能提升也有很好的作用,由此验证了载荷分离分析原理的有效性,可实现车与炮功能上的一体化、性能上的解耦设计。车载炮载荷分离设计实现了轻质底盘承受发射强冲击载荷的功能,是远程火炮高机动发射的理想方法。

Launch load transfer control is key to the lightweight and high maneuverability design of truck-mounted howitzers, and has always been a hot issue in the field of artillery research. To control launch load transfer, according to the configuration characteristics of truck-mounted howitzers, the presented work puts forward the basic principle of launch load separation design for chassis subjected to launch load, and constructs the constraint conditions for launch load separation. Based on the topological structure of a truck-mounted howitzer, its dynamic launch model is established, and the boundary conditions, the release coordination conditions as well as the constraint conditions are given. The correctness of the model is verified by comparing the calculation results and experimental data of the load and response of the key components in the launching process of the truck-mounted howitzer. In addition, through the analysis of the load on tires with different support structures and the firing stability, the results show that the load separation design for the truck-mounted howitzer can not only avoid the influence of the launch load on the chassis wheel bridge system, but also guarantee that the truck-mounted howitzer has the same reliability as the chassis. Moreover, the load separation design also plays a positive role in improving the performance of the truck-mounted howitzer, which verifies the effectiveness of the load separation principle and realizes the functional integration and performance decoupling design of the vehicle and the howitzer. The load separation design for truck-mounted howitzers realizes the requirements of a light chassis to bear the strong impact load from launch. It is an ideal method for highly mobile launch of long-range artillery.