Abstract: in order to raise the safety of the gantry crane for operation and maintenance, a moveable handle control system has been manufactured.
摘要：为了提高场桥操作和检查维修的安全性，建立了一个可移动式手柄控制系统。
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。
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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