The valve axle must be on the horizontal position when installed . the transmission device cannot be hoisted and avoid damage when installed 安装的阀门阀轴应处于水平位置，传动装置不允许作起吊用，并严禁损伤。
Three points must be located in the roof hanging intersection nodes . roof lifting at 50 cm from the suspended after inspections continue lifting unmistakable 吊点必须设在屋架三汇交节点上.屋架起吊时离地50 ?时暂停,检查无误后再继续起吊
Careful consideration should be given to the weight of material and equipment to be lifted by cranes so that the safe working load of the crane is never exceeded 必须慎重考虑准备用吊车起吊的材料和设备的重量，决不可超过吊车的安全工作负荷。
A crane - vehicle scheduling model is suggested in a loading container process with a fleet of vehicles , several yard - cranes and a quay - crane 摘要针对集卡、堆场起吊设备和岸桥设备在集装箱船舶装卸作业时的规划问题提出了一个起吊设备车辆的规划模型。
Trial operation and pressure text is necessary for the valve . install the valve after there is no abnormal condition . the driving device cannot be hoisted and avoid damage when installed 安装前先试运行及进行压力试验，无异常现象可上线安装。传动装置不允许作起吊用并严禁损坏。
The equipment should not drop onto or come into contact with other objects duing the course of hoisting or transportation , so as to avoid the structural part or the interior anti - corrosion layer from breaking 起吊和运输过程中，不可掉落或碰到其他物体上，以免引起结构部分和内部耐蚀层开裂。
During cantilever construction of large span cable - stayed bridge steel box girder , the local relative deformation of steel box girder is obviously different between girder to be suspended and girder supporting crane 摘要大跨度斜拉桥主梁悬臂拼装匹配过程中，吊机作用梁段和被起吊梁段由于受力不同，相对变形存在较大差异。
The power is the travelling grane of 20 tons , and large and medium computer precision injection machines processing and making , together with strong technical force and complete equipments 主要的设备有立式、卧式、龙门式数控加工中心；多功能深孔加工机；大型立式、卧式合模机；大型的双头数控火花机；起吊行车20t ，并备有大、中、小型的注塑机。
The model is to plan quay - crane loading operation , to schedule yard - crane routing and to dispatch vehicles to containers , so as to minimize the totally idle time of the related equipment and yard - crane travel time 模型对岸桥装载规划、堆场起吊设备路径选择和集卡分配进行了系统的优化，其优化目标是相关设备的空闲和堆场起吊设备空驶时间的最小化。
These lever hoists show their ability in package binding and pulling tasks in the vertical , horizontal and diagonal directions suitable for transportation , construction and civil engineering work , we have a lineup of models with lifting capacities ranging from 250kg to 6 . 3t 起吊，平放，斜放及货物堆放作业各工序操作灵活。适用于搬运，建设，土木作业。载重范围为250kg6 . 3t 。
