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某探测器的电连接器强脱装置拉绳组件在进行地面功能试验时发生钢丝绳断裂。从试验件状态、故障树原因分析、断裂机理等方面进行原因分析,准确定位钢丝绳发生断裂主要原因是钢丝绳刚度系数大、承载力设计与拔销器输出载荷不匹配,使电连接器分离过程中钢丝绳产生较大张力,超出钢丝绳承载极限后钢丝绳断裂。采用强度高、弹性好的芳纶编织绳替代钢丝绳,以有效降低电连接器强脱分离过程中钢丝绳的冲击载荷,延长了作用时间。通过对材料和工艺改进,再次进行功能试验验证,试验结果符合设计功能要求,为后续采用钢丝绳连接的产品设计提供参考价值。
Electrical connector of a detector Strong pull-off device The pull-rope assembly breaks a wire rope during a ground functional test. From the aspects of the condition of the test piece, the reason of the fault tree, the fracture mechanism and other reasons, the main reason for the occurrence of the wire rope rupture is that the rigidity coefficient of the steel wire rope is large, the bearing capacity design does not match with the output load of the pin puller, and the electrical connector is separated Wire rope to produce greater tension, beyond the limit of rope load wire rope rupture. The use of high strength, good elasticity aramid braided rope instead of wire rope, in order to effectively reduce the strength of the electrical connector rope stripping during the impact load, to extend the action time. Through the improvement of materials and process, the functional test is again conducted to verify that the test results meet the design functional requirements and provide reference value for subsequent product design with wire rope connection.