NiTi合金自动均载传力垫在内燃机车缸盖螺栓上的应用研究

Application Study of NiTi Alloy Auto-even-load Washer on Cylinder Bonnet Bolt of Locomotive

为了解决内燃机车缸盖螺栓组的均载防断问题,利用NiTi合金的压缩拟弹性特性设计了一种自动均载传力垫。内燃机车柴油机台架试验结果表明:在内燃机车缸盖螺栓上加装NiTi合金自动均载传力垫,可使各螺栓间预紧力和动应力的不均匀程度得到改善,动应力和热应力明显降低,因而具有良好的自动均载防松防断效果。

In order to share alike the loads and prevent the breakdown of cylinder bonnet bolt of locomotive,an intelligent washer with auto-even-load and anti-break was researched and produced.The results of test in cylinder bonnet bolt of locomotive show that the intelligent washer can share alike the loads of the botls and reduce the dynamic stress and thermal stress.It has good function of auto-even load,anti-lossen and anti-break.So it can impove the safety and reliability of locomotive.