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秦皇岛煤码头三期工程，共有地面胶带输送机17条，胶带宽2m，带速4．8m／s，输送机最长1013m，配重最重50t。由于空间的限制，粘补维修等需起配重时～直是靠人力同时起3台千斤顶，修复完成后再同步落下。不仅每次起升需半天时间，而且由于起升落下不完全同步，曾造成工伤事故c
Qinhuangdao coal terminal three projects, a total of 17 ground conveyor belt, tape width 2m, belt speed 4.8m / s, conveyor maximum 1013m, the heaviest weight 50t. Due to space constraints, repair and other sticky to take up when the weight ~ straight from 3 people at the same time by the jack, repair and then resumed after the completion of the fall. Not only for each half a day to rise, but also due to the rise and fall is not fully synchronized, has caused accidents C