NiTi合金在内燃机车缸盖螺栓上的应用研究

Applied Study of NiTi Alloy 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，从而提高了内燃机车的安全性和可靠性。

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 is researched and produced. The result of the practive test in cylinder bonnet bolt of locomotive show that the intelligent washer can share alike the loads of the bolts, and reduce the dynamic stress and thermal stress. It has the good function of auto-even-load,anti-lossen and anti-break. So it can impove the safety and reliability of locomotive.