The necessity, purpose, method and content of study for tractor roll-over protective structures (ROPS) are discussed. The current state and problems are analyzed. The further study is forecasted.

• 摘要论述了研究翻车防护装置的必要性、目的、方法和内容，分析了研究现状和存在的问题，并对进一步的研究进行了展望。