齿轮传动装置的损坏是经常发生的。在后果严重的各种车辆和机器事故中,齿轮早期失效的原因占首位。航空中若发生这样的事就是严重的灾难。因此在新项目设计时,必须使齿轮副在它所承受的工况下有足够的寿命;另一方面,若设计过好又会造成过分保守。齿轮设计内容丰富,涉及面广,试验费用有时又高昂,因此我们必须不断地完善和补充自己的理论知识。 Damage to gear drives is a common occurrence. In the aftermath of a variety of vehicles and machine accidents, the cause of the early failure of gears in the first place. Such a thing in aviation is a serious catastrophe. Therefore, when designing a new project, the gear pair must have a sufficient life expectancy under the conditions it is subjected to. On the other hand, if the design is too good, it will cause excessive protection. Gear design rich in content, involving a wide range of test costs sometimes high, so we must continue to improve and supplement their theoretical knowledge.