起重机

Standard equipment includes: crane with telescopic jib that can lift a maximum load of 15 tons, front mounted stabilizing dozer blade, main and secondary winch.

标准配备包括：起重机，伸缩臂，可以解除最大载荷为15吨，正面安装稳定推土机刀片，主要和次要绞车。

Bottom slewing crane with luffing jib and tower without backstavs.

与俯仰运动三角帆的底下旋转没有backstavs的起重机和塔。

The numerical simulation results show that the calculated stress value of gate crane jib exceeds the allowable structural strength in certain observation points, but less than ultimate strength of the metal materials.

由数值仿真结果表明：门座起重机臂架系统某些观测点的计算应力值已超过结构强度许用应力，但是小于金属结构材料强度极限。

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。

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。

Hoisting the jib assembly by motor crane.

4.2.12.5 用汽车起重机将吊臂总成平稳提升。

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。

With cranes working with speed and the weight of rising right jib system for dynamic analysis is necessary.

随着起重机工作速度和起重量的不断提高，对臂架系统进行动力特性分析非常必要。

In this article,a simplification of the entire bridge lattice into a "Plate Girder Frame" whose solution can be found by means of the force method is used instead.

在现有计算双梁桥架的内力的方法中，都是将桥式起重机的主梁简化成简支梁来计算的。

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。