有两台１０７５联合收割机在麦收作业中，多次发生半链轨大减速齿壳和外接支撑套损坏的故障。其原因是：整机质量较大，运行中半链轨压在凸凹不平的局部硬支点上，使总成外倾（“大脚”外张），将支撑套固定螺栓拉断。预防措施：在左右半链轨台车顺梁里侧的内支座中上部（... There are two 1075 combine harvester in the wheat harvest operation, many times the occurrence of half-link rail slowdown tooth shell and external support sleeve damage failure. The reason is: the whole machine is bigger in quality, and the half-chain rail in operation is pressed on the uneven local hard fulcrum so as to make the assembly camber (“big foot” outer Zhang) and pull off the supporting sleeve fixing bolt. Preventive measures: in the left and right half-rail trolley carriages in the inner side of the upper bearing (...