转向架轴箱钢弹簧端部结构对使用性能的影响分析
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摘要
以某动车组转向架轴箱钢弹簧断裂故障调查处理为例,通过模拟仿真及台架试验发现,该钢弹簧采用碾尖制造工艺,减小支撑圈数,以及优化钢弹簧组下端绝缘垫刚度,在相同的载荷工况下,极大地改善了钢弹簧的受力状态,有效降低了钢弹簧的应力水平.同时提出了机车车辆转向架轴箱钢弹簧设计时应考虑校核的内容,并建议转向架轴箱钢弹簧在疲劳试验时应考虑的载荷工况.
Steel spring end structure used in bogie axlebox affects the length of contact line and the structure of the transition area of the spring, which directly affects the spring work status. In this paper, the investigation and treatment of the axlebox spring crack on an EMU bogie is taken as an example, simulation and bench test show that under the same load condition, adopting the rolling tip manufacturing process, decreasing the number of supporting rings and optimizing the stiffness of the nether insulated pad of the steel spring group can improve the stress state of the steel spring greatly and reduce the stress level of the steel spring effectively. The article also gives the proposal in design and fatigue test phase of the axlebox spring.
Steel spring end structure used in bogie axlebox affects the length of contact line and the structure of the transition area of the spring, which directly affects the spring work status. In this paper, the investigation and treatment of the axlebox spring crack on an EMU bogie is taken as an example, simulation and bench test show that under the same load condition, adopting the rolling tip manufacturing process, decreasing the number of supporting rings and optimizing the stiffness of the nether insulated pad of the steel spring group can improve the stress state of the steel spring greatly and reduce the stress level of the steel spring effectively. The article also gives the proposal in design and fatigue test phase of the axlebox spring.
引文
[1]严隽耄. 车辆工程[M].北京:中国铁道出版社,1999.
[2]张英会.弹簧手册[M].北京:机械工业出版社,2008.
[3]肖绯雄,樊光建. 机车车辆中螺旋弹簧刚度计算[J]. 内燃机车,2006(4):10- 11,14.
[4]BSI.EN 13906- 1:2002 Cylindrical helical springs made from round wire and bar-Calculation and design-Part 1:Compression springs[S].British:BSI Standards Limited,2002.
[5]BS EN 13298:2003 Railway applications-Suspension components-Helical suspension springs,steel[S].British:BSI Standards Limited,2003.
[6]中华人民共和国铁道部.TB/T 2211- 2010机车车辆悬挂装置钢制螺旋弹簧[S].北京:中国铁道出版社,2010.
[2]张英会.弹簧手册[M].北京:机械工业出版社,2008.
[3]肖绯雄,樊光建. 机车车辆中螺旋弹簧刚度计算[J]. 内燃机车,2006(4):10- 11,14.
[4]BSI.EN 13906- 1:2002 Cylindrical helical springs made from round wire and bar-Calculation and design-Part 1:Compression springs[S].British:BSI Standards Limited,2002.
[5]BS EN 13298:2003 Railway applications-Suspension components-Helical suspension springs,steel[S].British:BSI Standards Limited,2003.
[6]中华人民共和国铁道部.TB/T 2211- 2010机车车辆悬挂装置钢制螺旋弹簧[S].北京:中国铁道出版社,2010.