摘要
磨损是链条损坏的主要因素。对远距离输送链的各链段静、动载荷进行计算,通过分析理论公式,得出链条节距磨损不仅影响静载荷值而且会产生附加动载荷,对链传动过程中的振动激励力有较大的影响。对此,在输送链的静载荷逐点分析模型和链条、链轮啮合模型的基础上,得出每链段的载荷理论计算式,确立载荷和链条节距伸长量之间的公式化关系。为了分析验证理论结果,应用动力学软件RecurDyn进行数值模拟,得出了链条和链轮的载荷分布曲线,说明了每链段的总张力是静载荷和相应比例动载荷之和,验证得出了合理预紧张力的施加可以有效地降低磨损伸长引起的振动。
Wear is the major factor of chain damage. The static and dynamic load calculation of the long-distance transmission roller chain is carried out. Through the analysis of theory formula, a con- clusion which has a larger impact the wear of chain pitch on the excitation force in the transmission vi- bration in the process of chain transmission is obtained. As to this, the theoretical calculation formula of each chain load and the formulaic relationship between load and elongation of chain pitch are ob- tained based on the point-by-point static load model and chains/sprockets meshing model. For the analysis and verification of the theoretical results using RecurDyn software for numerical simulation, the distribution curve of the load on the chains and sprockets is obtained, and it concludes that the to- tal tension of every chain is the sum of the static load and the corresponding proportion of dynamic load, and that imposing tension force can effectively reduce the vibration caused by the elongation of the chain wear.
出处
《机械传动》
CSCD
北大核心
2014年第2期25-29,共5页
Journal of Mechanical Transmission
关键词
磨损
节距伸长
静载荷
动载荷
Wear Pitch elongation Static load Dynamic load
