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对于任何工艺先进的链条厂生产出来的链条都会使链条的初期应用有较大的伸长,于是对链传动会带来中心距需要调整变动等麻烦。文章叙述了这方面的原因和道理。为了消除上述不合理的出厂状况,许多先进工业国家的链条标准都规定了在检验链条总长时,需在预拉后进行。文中述及了链条自然长度、测量长度等关系;并对预拉后测量的科学性进行了论述。预拉工艺和出厂跑合工艺是二种不同的要求,后者代替不了前者。文章从四个方面阐明了其原因,并对预拉设备的选择提出了建议。
For any chain of advanced production technology chain will make the initial application of the chain have greater elongation, so the chain will bring center distance need to adjust the adjustment and other troubles. The article describes the reasons for this and truth. In order to eliminate the above unreasonable factory conditions, many advanced industrial countries have provided for the chain of the chain length in the test, the need to pre-pull carried out. The article mentioned the relationship between the natural length of the chain and the length of the measurement, and discussed the scientific nature of pre-tension measurement. Pre-pull process and the factory run-in process are two different requirements, the latter can not replace the former. The article clarifies the reasons from four aspects and puts forward suggestions on the selection of pre-tensioning equipment.