Study of Movement Reliability for Hoisting Jack under a Rocket Launcher Vehicle

• 来源期刊: 国际设备工程与管理：英文版
• 学科: 交通运输
• 关键词: 运动可靠性 火箭发射器 千斤顶 可靠性设计 传导机制 传输机制 复杂机械系统 动力学方程
• 年，卷（期）: 2011,（3）
• 页码范围: 157-162
• 页数: 6页
• 分类号: TH211.1|U469.110.3
• 语种: 英文

摘要

The transmission mechanism of a jack is required to support the combat vehicle reliably within a very short time. So reliability research is very important because the mechanism completes motions required under the conditions within limited time. If the transmission mechanism of the jack supports the rocket launcher steadily, it needs to go through several stages as follows ： unlocking, starting, operating, braking, stopping, fixing position and locking. The transmission mechanism of the jack is a complicated and single degree of freedom mechanical system; it can be considered an imaginary mechanical model that has an equivalent moment of inertia and equivalent torque. According to the characteristics of each supporting stages, dynamics equations of the mechanism are established. At the stages of starting and operating, a driving moment and resistance moment are dealt with for a Normal distribution. The design principles for movement reliability of completing action are established and the design principles for time reliability of completing action within a limited time are established. Finally, movement reliability of the transmission mechanism of the jack is 0. 9 852, according to our calculation. Reliability of time to complete action is 0. 9 943.