查询词典 jib crane

Based on the multi-body dynamic theory,the generalized coordinates that include the jib rotating,the jib elastic deformation and the payload pendulum are used to form the crane multi-body dynamic model.

基于柔性多体动力学理论，选取包含吊臂转动，吊重摆动及吊臂弹性变形的广义坐标，构建了起重机的多体动力学模型。

If that more than two tower crane are working, as the working specialty, notice the position of them, adopt the different level, so as to avoid the collision from jib of the tower crane, counter-jib and the building.

8.3.7 有两台以上塔机工作时，要根据工作特点，注意相互之间的位置，并采用不同标高的方法，以避免塔机的起重臂，平衡臂相互碰撞，以及与建筑物碰撞。

In a word,virtual prototype study of double link jib system of portal crane is a trial that apply advanced design analysis, emulation techniques in design of portal crane and offers efficient tool and method to design portal crane that is economic, credible stable and high performance.

总之，门座起重机组合臂架系统的虚拟样机研究，是先进的设计、分析、仿真技术应用于门座起重机设计中的初步尝试，为起重机虚拟设计、动态设计和结构分仿真分析提供了有力的工具和实现方法。

To simplify the finite element analysis process of tower crane jib, the parameters modeling created by the rapid input to the key parameters to complete the tower crane jib analysis and calculation.

目的 利用参数化设计系统简化塔式起重机臂架有限元分析过程，创建参数化模型，通过对关键参数的输入快速完成塔机臂架的分析计算。

Point to take MQ2535 portal crane jib system as to research object, take finite element and mechanical kinetics as to theoretical fundamental, make use of ansys8.1 to emulate jib systemic at the course of luffing in dynamics , obtain luffing procedural dynamics data of rigid body and elastic body of the jib system , according to those data,which is to improve these system designs beneficial conclusion henceforth.

针对以上问题，本文以MQ2535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，借助ANSYS8.1对臂架系统的变幅过程进行了动力学仿真，得到了臂架系统刚体和弹性体变幅过程的动力学数据，从数据中得到了对今后改善该系统设计的有益结论。

The jib system of portal crane is considered to be elastomer in this paper. Besides, taking finite element as basic theory and mechanical dynamics as analysis method,the paper simulates the virtual luffing process of jib system and seeking the relationship between plane movement and dynamic pressure condition of jib system using ANSYS8.1. By analyzing ,the paper gives some advice on structure optimizing.

针对以上问题，本文以MQ2535门座起重机臂架系统为研究对象，将门座起重机整个臂架系统视为弹性体，以机械动力学和有限元为理论基础和分析手段，运用有限元软件ANSYS8.1模拟臂架系统的实际变幅过程，探寻物品在变幅过程中水平移动与臂架系统结构动态受力之间的关系；通过分析其受力情况，对其结构的优化提出了一些建议。

This article mainly includes: taking lowest weight as optimization goal, criterionrequest as restrict, optimization programme on jib arm structure of giant floatingcrane design is written based on genetic algorithm;according to jib arm structure ofgiant floating crane which is being designed and other former ones, size and structureform of jib arm are deeply discussed, furthermore, relatively reasonable jib armstructure scheme is proposed.

课题主要内容：以结构重量最轻为优化目标、以规范要求为约束条件、使用遗传算法编制了起重机臂架优化设计计算程序，根据目前正在设计建造的和国内已有的起重臂架结构，在对拔杆式臂架的尺寸及结构形式进行了充分讨论研究的基础上，提出相对合理的臂架结构设计方案和设计思路。

According to records, the first tower crane used in construction-related patents issued in 1900. Emerged in 1905 with fixed jib tower crane, made in 1923 the modern prototype of the tower crane, the same year the first complete modern tower crane. At that time, Germany in 1930 has begun mass production of tower cranes, and used for building construction. In 1941, the tower crane industry standard DIN8770 Germany announced.

据记载，第一项有关建筑用塔机专利颁发于1900年。1905年出现了塔身固定的装有臂架的起重机，1923年制成了近代塔机的原型样机，同年出现第一台比较完整的近代塔机。1930年当时德国已开始批量生产塔机，并用于建筑施工。1941年，有关塔机的德国工业标准DIN8770公布。

In addition, oil fields at sea frequently require installation work, which is why the 3,000 short ton crane was developed. With its 90-meter jib, a 100-ton hoisting block, a total crane weight of over 2,200 tons and its height of over 75 meters, this crane is truly a 'big guy', even by Huisman standards.

另外，海底油田常常需要进行安装工作，这也是开发3000短吨级起重机的原因。90米长的起重悬臂，100吨中的起重滑轮，全重超过2200吨，高度超过75米，即便按照豪氏威马的标准，这台起重机也是一个真正的"大家伙"。

Bottom-slewing crane with luffing jib and towel' with backstays,- Bottom slewmg saddle jih cranes with out backstays, Bottom-slewing cranes with luffing jib

与俯仰运动三角帆的底部旋转与后牵索的起重机和towel，-与后牵索的底下slewmg马鞍jih起重机，与俯仰运动三角帆的底部旋转起重机

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。