查询词典 jib boom

The metal structure of crane telescopic boom is analyzed and optimized by structure analysis and the combinatorial optimization based on topology and size optimization methods, and structure integrated design of telescopic boom is achieved by the development of visual software system in this paper.

本文应用结构初级分析和基于拓扑优化、尺寸优化的组合优化分析方法对起重机的伸缩臂金属结构进行优化设计，同时开发可视化软件系统实现伸缩臂结构的集成设计。

The davit shall have maximum capacity of 500 lbs at a 5-6 boom extension and 1000 lbs at a 3'-0 boom extension.

并且其最大起吊重量为延伸臂长5英尺6英寸时为500磅，延伸臂长3'英尺时为1000磅。

The boom should possess enough strength, rigidity and stability. Among other things, the deftness of the boom appears to be more important.

吊臂除了具备足够的强度、刚度和稳定性外，还必须力求轻巧。

This arrangement allows the crane to raise the second boom section beyond the horizontal,compensating for boom deflection when the crane is loaded,and also allowing for greater extension when headroom is limited.

这种设计安排可让起重机推动第二吊杆部分超越水平面补偿吊臂负载时吊杆偏转，也允许在余量有限的情况下作更大的程度扩展。

You call in that snake and nape|and get us some boom-boom now!

快给我呼叫蛇颈导弹，来点轰炸！

Using guyed tower middle line insulator string as an object, through analyzing of distance between cross arm and boom guy plumb plane, and projecting insulator string length, angle, conductor wind inclined angle, and sag to boom guy plumb plane, middle line insulator string tracking equations can be established.

以拉线塔中线绝缘子串为分析对象，通过对横担、拉线铅锤面间的距离分析，再将绝缘子的串长、角度，导线风偏角、弧垂投影至拉线铅锤面，在拉线铅锤面建立中线绝缘子串的轨迹方程，以带电体与拉线间的距离为限制条件，从不同角度计算出第1、2、3极限风偏角，取其中的最小值为极限风偏角。

Therefore, the in-depth research on the process of dynamic loads when braking ,the analysis about the causation and influence factor of the dynamic loads" emergence is necessary to the design of the circumgyrate machinery Aim at above problems, this text treats the portal crane"s boom system as a research object ,using finite element analysis and mechanism kinetics as theories foundation and analysis means ,utilizing ANSYS8.1 to research the dynamic effect of the crane boom under the circumstance of braking.

针对以上问题，本文以MQ4033门座起重机臂架系统为研究对象，以有限元和机械动力学为理论基础，运用ANSYS8.1对臂架系统在回转制动时的工况进行动力学分析，获得了臂架系统的模态特征以及在回转制动时的动力响应。

Professional persons analysis, the rate of increase in domestic orders in unstable conditions, this level does not Daibiao level of economic boom, even Ke Yi said that the absolute value of orders for new Jixie still small in absolute terms the level of economic boom, Germany Gong Ye still in the recovery period.

有专业人士分析，在国内订单年升率不稳定的状况下，此水平并不代表着经济繁荣时期水平，甚至可以说新增机械订单的绝对值仍旧小经济繁荣时期水平的绝对值，德国工业仍旧处于复苏时期。

The two stage telescopic lattice frame is composed of three boom sections sleeve-mounted together, tail end of the outmost basic boom frame is pivot-connected respectively with slewing mechanism and luffing mechanism on the chassis; the inner two section booms can telescope freely like a retractive antenna to change the delivering distance of the conveyor and the operating radius.

两级伸缩臂架由套装在一起的三节臂架组成，最外层的基础节臂架尾部和底盘的回转机构、变幅机构分别铰接，固定于底盘上；内层的两节臂架可如拉杆天线一般自由伸出和缩回，改变输递机的输送距离，从而改变施工半径。

You see im doing a similar secuence, but in fact i did not draw the tings on the toom boom studio, i do it on pencil an skcaned it , then clin it an import them onto Toon Boom in diferents layes an vectorise them, but the problem is that i ca not see the drawing below, i men if i habe the thorse hands an legs , i can just see the torso the legs an arms on separete, how i can do to get them to show together?

你看到图像做了类似的secuence ，但事实上我并没有提请tings对南通繁荣工作室，我做的铅笔一个skcaned ，然后蛋白是一种进口到香椿的繁荣diferents layes一个vectorise他们，但问题是，钙没有看到下面的绘图，我男人如果我波部的thorse手中的腿，我只能看到腿部躯干的武器separete ，我怎么才能让他们显示在一起？

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。