The vibration mechanical model of gantry and bridge crane is established by means of structural analysis.
通过对门桥式起重机的结构分析，建立了其振动力学模型。
Resorting to a simplified mechanical model, this paper makes a theoretical analysis of the dynamic response of the gantry crane and loading bridge when their their trolleys collide with buffers.
本文用简化的力学模型对龙门起重机和装卸桥小车撞击缓冲器时的动力响应进行理论分析。
A scale model of an 8.0ton bridge crane based on "similar theory" has been made.
在相似理论基础上设计了一个桥式吊车的缩尺摸型，并对它进行了试验。
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