The influence of load hoisting acceleration on dynamic forces is obvious, especially on dynamic bending moment of the main boom.
结论吊重起升加速度对起重机动载荷的影响较大，特别对主臂内的动弯矩的激励更加明显。
It also analyzes stress condition of two important components of the device, dipper handle and boom, supplying load basis for subsequent static analysis.
分析了机构中两个重要部件斗杆与动臂的受力状况，为后续静力学分析提供荷载依据。
Present paper takes a tubular boom as an example to prove that it is precise enough to use energy method to find buckling load of a boom.
本文以管形变截面臂架为例，证明用能量法求臂架的屈曲载荷相当准确。
Model RT550 wheel type off-road crane; Load carry and travel; Boom telescoping with load; Lift operation;
RT550型越野轮胎起重机； 吊运行驶； 带载伸缩； 起重作业；
Through the modal analysis, it is found that main vibration modes of floating crane structure are swing of rope-load system and vibration of boom, and the vibration frequencies are low;
通过模态分析发现，浮吊结构的振型主要表现为主钩钢丝绳-吊重系统摆动和臂架振动，振动频率都很低；
Through the modal analysis, it is found that main vibration modes of floating crane structure are swing of rope-load system and vibration of boom, and the vibration frequencies are low;
通过模态分析发现，浮吊结构的振型主要表现为主钩钢丝绳-吊重系统摆动和臂架振动，振动频率都很低；
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