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我公司一台日立公司生产的ＫＨ１８０－ ３履带起重机大修时，发现分动箱的输入花键啮合部位严重磨损。花键轴上的外花键被挤压得严重变形，分动箱输入齿轮上的内花键磨损得只剩下２ｍｍ高的小三角，发动机上的飞轮输出花键毂也磨损严重，已不能使用。该花键轴是连接发动机和分
When a KH180-3 crawler crane manufactured by a Hitachi company was overhaul, it was found that the input spline engagement portion of the transfer case was severely worn. Spline shaft on the external spline is severely deformed extrusion, the input gear on the transfer case on the internal spline wear only 2mm high triangular small, the engine flywheel output spline hub is also severely worn, it can not use. The spline shaft is connected to the engine and points