Lifting operation hydraulic system should be no-load operation, adjust the lifting sleeve frame roller and the mast section clearance, hoisting torque and balance torque balance;
顶升作业时液压系统应进行空载运转，调整顶升套架滚轮与塔身标准节的间隙，使起重力矩与平衡力矩保持平衡；
The frame of mast derrick that is designed for hydraulic wheel tractor hoist adopt welding of armor plate, its section is oblong armor plate, and its material is HG60.
为满足液压轮式通井机的使用要求而设计的桅杆式井架采用板焊结构，主体截面为长方形的方形钢，材料为HG60。
The Superstructure took over 2 years to build. It was overhauled in 2006. Over 200 sections comprises a single radar mast glued one section at a time.
上了2年多的建设。它是在2006年大修。超过200的部分包括一个单一的雷达桅杆粘在一次。
Do not tape the matching section to a metal mast or pole.
不要带匹配的部分，以一个金属桅杆或极。
Do not tape the matching section to a metal mast or pole.
不要带匹配的部分，以一个金属桅杆或极。
应用推荐