bar iron crane [机] 铁条起重机
bar steel suspension crane 型悬挂行车
bar r crane 杆式起重机
Four-bar linkage of portal crane 门座起重机四连杆结构
Normally, loader crane dealers custom-fit a frame of steel bar on top of a truck chassis to mount the crane.
通常， 装载起重机经销商随俗地在卡车底盘顶部设置铁杆梯架登上起重机。
It is pointed out that adding column for truss can strength the cantilever, and adding attached bar can reduce unfavorable load of tower crane to cantilever truss.
指出可以通过对桁架增加立柱的方式对悬臂进行加固；另外，附着杆的增加可以降低起重机对下部悬臂桁架的不利荷载。
On these cranes, the hydraulic RAMS that extend to raise up the crane do not push on the boom, but instead on a pivoting link-bar.
这些起重机，液压冲力并不是作用于吊杆上，而是作用于一个铰链连接杆。
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