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1台D9N型推土机在经过10多年使用后,台车架后端安装引导轮的支承座严重磨损。经研究制定了2个修复方案:一是将引导轮支撑部位的前端整体割除后重新制作,但焊接时找正定位比较困难;二是修复连接螺栓孔,制作轴盖、轴套和校正轴,此法优点是找正定位精确,缺点是制作难度大。比较分析后,决定采用可靠、稳妥的第二方案。首先,将新制作的轴套(轴套孔径为65 mm)沿轴线切割一分为二,并将2个半圆形轴套外圆周依照磨损部位仿形切割;其次,依据轴套尺寸制作出2个轴盖和1
After a Taiwan D9N-type bulldozer after 10 years of use, the rear frame mounting bracket guide bearing serious wear and tear. After the study developed two repair programs: First, the front end of the guide wheel support cut off the whole after re-production, but the welding is to find a positive positioning more difficult; the second is to repair the connection bolt hole, the production of shaft cover, shaft sleeve and shaft, The advantage of this method is to find the correct positioning, the disadvantage is the difficulty of making. After comparative analysis, decided to adopt a reliable, secure second program. First, the newly made sleeve (sleeve bore diameter of 65 mm) along the axis cut into two, and the outer circumference of the two semicircular sleeves in accordance with the wear parts of the copy cutting; secondly, according to the sleeve size to produce 2 shaft covers and 1