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在走访用户中，发现一台轮式装载机车架铰接部位发生故障数次：铰接销偏磨换销轴两次；关节轴承碎裂换轴承一次；后车架铰接孔已磨成椭圆。为根治故障，我们对车架铰接部位结构及故障原因进行了分析研究，提出了结构修理方案，现叙述如下。 该装载机为折腰转向铰接式车架，中心
Visiting users, found a wheel loader frame hinge failure occurred several times: the hinge pin partial wear off the pin twice; joint bearing fragmentation change bearings once; rear frame hinge hole has been ground into an ellipse. In order to cure the fault, we analyzed and researched the structure of the frame hinge and the cause of the fault, and proposed the structural repair scheme. The description is as follows. The loader is hinged to articulated frame, center