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介绍了一种无砟轨道道岔用硫化垫板。该垫板的结构属压缩型,在胶料配方上以天然胶为主体,采用碳黑原位接枝改性技术,能在满足刚度要求的前提下有效降低胶料硬度,并大幅度提高定伸应力。在产品设计上应用有限元分析,通过计算确定最佳型面,并提出双刚度设想,确保了扣件系统在受到冲击荷载或超载情况下的二次刚度保护,保证道岔中扣件节点刚度与轨道刚度匹配以及岔区刚度均匀。
A kind of vulcanization plate for ballastless rail switch is introduced. The structure of the pad is a compression type. In the rubber compounding formula, natural rubber is the main part, and the carbon black in situ grafting modification technology can effectively reduce the hardness of the rubber compound under the premise of meeting the rigidity requirement, Tensile stress. Finite element analysis is applied to the product design to determine the best profile by calculation and to propose a double stiffness assumption to ensure the secondary stiffness protection of the fastener system under shock load or overloading and to ensure the rigidity of the fastener node Track stiffness matching and evenness in the turnout area.