自锁式高温防松螺栓的设计开发

Design and Development of Self-lock-type High-temperature Anti-loosening Bolt

排气管、增压器、EGR等零件是发动机上工作条件最恶劣的零部件之一,工作过程中承受从常温到近千摄氏度的高温变化,同时还要满足振动与密封的要求,由于工作条件恶劣,容易出现松脱、断裂等故障,导致连接零件间的密封失效而漏气,影响发动机的性能,严重时可能导致发动机无法正常运转。为了解决上述故障,设计了一种具有机械自锁功能的高温螺栓组件,用于解决高温连接件的紧固问题,以减少发动机的故障,提升可靠性。

The exhaust pipe,supercharger,EGR system ect are the worst working conditions on the engine.Under the high temperature change from normal temperature to nearly one thousand degrees celsius,these parts also meet the requirements of vibration and sealing.Due to the poor working conditions,the loose and fracture of these parts,the sealing failure between the connecting parts may affect the engine performance.In order to solve the above faults,a high temperature bolt assembly with mechanical self-locking function is designed to solve the tightening problem of the high temperature connector,so as to reduce the engine failure and improve the reliability.