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本文主要目的是提出一种计算滚子链疲劳寿命的实用方法。为此,根据链条的帐蓬曲线把链条的使用工况划分成五个区域。除第一区域链条不能正常运转外,在其它区域中,滚子链的疲劳寿命取决于链板或滚子,套筒的疲劳寿命。文中,给出了各种使用工况下链板与滚子、套筒疲劳寿命的计算方法。文章指出,滚子链的疲劳寿命是根据链条零件的疲劳特性计算的,因此,链条制造厂不仅应该提供滚子链的帐蓬曲线,而且应该提供链板与滚子、套筒的疲劳特性。最后,文章根据疲劳寿命的计算,讨论了各种使用工况下滚子链的选用原则。
The main purpose of this paper is to propose a practical method of calculating the fatigue life of a roller chain. To this end, according to the curve of the chain tent chain usage conditions divided into five regions. In addition to the first regional chain can not be normal operation, in other regions, roller chain fatigue life depends on the chain plate or roller, sleeve fatigue life. In this paper, the calculation methods of the fatigue life of chain plate, roller and sleeve under various operating conditions are given. The article points out that the fatigue life of roller chain is calculated according to the fatigue characteristics of chain parts. Therefore, the chain manufacturer should not only provide the curve of roller chain tent, but also provide the fatigue characteristics of chain plate, roller and sleeve. Finally, based on the calculation of fatigue life, the paper discusses the principle of selection of roller chains under various operating conditions.