arm crane

First, we can obtain boom amplitude angle and tower crane basement angle of two cranes by means of absolute encoder. Then, we use projection method for establishment of two-dimensional projection model of crane, and so as to analysis four-quadrant double-arm anti-collision problem.

通过绝对编码器我们可以获得两台起重机的臂架幅度角与塔基旋转角度，然后，运用投影法建立起重机的二维投影模型，分析四象限双臂防碰撞的问题。

The diversity of the boom combination of the large tonnage all-terrain crane boom and uncertainties of the site make challenge for the control of main arm telescopic with the tower arm condition.

大吨位全地面起重机臂架组合的多样性以及现场存在各种不确定因素，给塔臂工况下的主臂伸缩控制带来了挑战。

In this paper, the hexagonal two-arm telescopic boom, for example, a general theoretical model was established. It is also suitable for the multi-objective optimization design of a variety of cross-section telescopic arm of crane.

文中以六边形二节伸缩臂为例，建立了一般性的理论模型，故对各种截面多节臂的伸缩臂多目标优化设计，也具有普遍的适用价值。

The arm is the most important job components of heavy-duty construction machinery and truck crane. The arm belongs to metal structure parts. It is the important part in the force, and the main work units are installed in the arm.

吊臂是重型工程机械汽车起重机最重要的工作部件，吊臂是属于金属结构部分，是除机身外重要受力部分，而且主要的工作单元都安装在吊臂上。

To avoid the dangerous working conditions, improve reliability and operational safety of the all-terrain crane, the main arm telescopic with the tower arm condition uses manual control at construction site.

为了减少危险工况带来的事故，提高全地面起重机的可靠性和作业安全性，一般施工现场对于塔臂工况下的主臂伸缩采用手动控制。