转鼓式无链供弹液压系统设计研究

Analysis on Hydraulic System of Drum Chainless Ammunition Feeding System

转鼓式无链供弹系统大转动惯量的弹鼓在极短间歇周期内需要快速频繁起停,推弹马达存在速度为零的堵转工作特点,需要动力源瞬间提供大功率输出和具有保压功能。提出了采用蓄能装置的多路复合并联液压节能动力驱动方案。同时基于系统一个工作循环的瞬时油量变化,研究了泵容量、蓄能器及系统压力等参数的匹配方法并进行了相应的试验验证。结果表明,该液压系统响应快,易于控制,适应供弹系统的工作特点和要求,并且节能效果显著,较好地解决了高速供弹瞬间大功率输出要求与系统分配的小功率电源之间的矛盾,为火炮供弹动力源的设计提供了新的思路。

A drum magazine with large rotary inertia must start and stop rapidly and frequently in the short resting period and ammunition feeding system must provide the zero velocity to apply to high-speed ammunition feeding during the operation process of automat mechanism. Thus he power system should have the capability to supply momentary large power and to maintaining pressure. Therefore, a multi-loop combined parallel hydraulic system based on the energy-saving technology was designed for a drum chain less ammunition feeding system by means of adding a kind of accumulator inside the power supply. Based on the momentary flow variable in one working cycle of the hydraulic system, the parameter matching method of the pump capacity, volume and prepresure of accumulator and system pressure were studied, and a verification experiment was carried out. The test results indicated that the response of the hydraulic power system is rapid, it is easy to control, and it is suitable for the working features and requirements of high-speed ammunition feeding system, and it also has an obvious effect of energy saving, The hydraulic power system can preferably solvethe antinomy between instantaneous large power output and small power assignment of the system, and it can provide a new thinking for the design of the power supply of rapidfiring gun.