This paper theoretically analyzes the critical force in metal hoisting boom structure of lattice type and variable section.
本文对格构式变截面吊臂金属结构的临界力计算作了理论分析。
Considering the boom cross section as a whole, a parametric finite element model and a parametric optimization model for local stability calculation of a boom structure were established.
将吊臂截面作为整体考虑，建立了吊臂结构局部稳定性计算的参数化有限元模型和参数优化模型。
Taking a boom with box section as an example, this paper introduces some accessorial methods that are different to the routine welding technique.
以箱形截面吊臂为例，介绍其焊接工艺及焊接前后的辅助处理方法。
When the box section design boom and a reasonable cross-section are put in danger of partial reinforcement, the arm can have good stiffness, strength, vibration stability.
当箱型臂截面设计合理且在危险截面处实施局部补强后，可使臂架具有良好的刚度，强度，振动稳定性。
Based on the structure of the force, and established fuel tank and wire rope mathematical model of the structure of arbitrary section telescopic boom.
本文基于伸缩臂结构受力状态，建立了任意节伸缩臂结构油缸及钢丝绳设备数学模型。
Boom crane often has a boom with varying cross section. Boom weight, its construction and main dimension significantly affects the crane performance.
臂架式起重机常采用变截面的臂架，臂架的自重、结构型式与主要尺寸对起重机的性能有重要的影响。
Box section telescopic boom; Telescopic mechanism; Pinless boom; Single cylinder pin type;
箱型伸缩臂； 伸缩机构； 无销式；单缸插销式；
Results of destructive test on hexagon section boom show that the test resu...
对六边形臂进行破坏试验，试验结果与计算值相当吻合。
Results of destructive test on hexagon section boom show that the test resu...
对六边形臂进行破坏试验，试验结果与计算值相当吻合。
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