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一台进口的750 t履带起重机,预装机身两边共28块配重时,由于没有第一块配重较准确的定位点,造成安装对位困难。而左、右两边的第一块配重安装是否到位,会直接影响左、右两边余下的各13块配重安装重心是否处在同一垂线上。这使得安装费时费力,试运行过程中,机身配重又出现局部晃动现象,给使用安全带来隐患。
An imported 750 t crawler crane, pre-installed on both sides of the fuselage with a total of 28 weights, because there is no more accurate positioning of the first counterweight, resulting in the installation of alignment difficulties. The left and right sides of the first weight of the installation is in place, will directly affect the left and right sides of the rest of the 13 weight center of gravity is installed in the same vertical line. This makes the installation time-consuming and laborious, during the test run, the body weight appears partial shaking phenomenon, to bring safety hazards.