起重机

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。

By analyzing several currently-used visual displaying schemes for cranes simulation training, a display concept based on enhanced virtuality is proposed and some key issues in it are discussed. Manipulation based human-computer interaction technology is studied and two typical virtual controller are realized by associating the time or the location parameter of modeling with its movement parameters. A implement method of physical controller is presented based on virtual keyboard mapping technology and a compact and flexible control box prototype is obtained. Using it, users can operate the virtual crane conveniently.

分析了目前起重机模拟培训常用的几种视景显示方案，提出了一种基于增强现实的显示概念，并对其中若干问题的实现方法进行了探讨；研究了基于操纵的人机交互技术，通过时间或造型位置与起重机运动参数之间建立的联系，实现了两种典型的虚拟控制器；提出了一种基于虚拟键盘映射技术的物理控制器解决方案，设计了一个小巧、灵活的控制盒原型，可以方便地操作虚拟起重机并实现有关运动。

There is no any successful experience to use for reference in home. After analyzing research and application in this domain in foreign countries, and through self-thinking, practice and creativity, project group of SMU developed two type of container crane training simulator to meet our teaching: one is hardware-in-the-loop training simulator of container crane, the other is digital training simulator of container crane.

在国内尚无任何成功经验借鉴的情况下，上海海运学院课题组在分析了国外同行在该领域的研究及应用情况的基础上，通过独自摸索、实践创新，开发出了适合自身教学需要的两套集装箱起重机仿真训练器：半实物集装箱起重机仿真训练器和全数字集装箱起重机仿真训练器。

The briachial-bridge luffing mechanism and curve slideway live control weight gravity balance system are the core technology. The result of system design affects the mechanism performance directly.

臂桥架起重机结合了桥式起重机和门座起重机的优点，装卸效率高、工作范围大，而且造价和基础土建费用低，其优越性非常显著。

This thesis is based on crane dynamic theory and finite element theory, and utilized software platform of ANSYS. It realizes model analysis and transient analysis of steel rope and bridge structure. The data and conclusion offered effective method to bridge crane design. The thesis mainly includes:According to crane dynamic theory, established relevant dynamic model, and analyzed the dynamic properties of the bridge structure of the bridge crane, including the natural frequency, the model shape and the dynamic stress. A way to analyse the dynamic response of the bridge structure of the bridge crane which takes into account the dynamic properties of the steel rope pulley block has been explored successfully.

本文基于有限元理论和起重机动力学理论，以有限元分析软件ANSYS为平台，实现了计算机对钢丝绳系统和桥架的模态分析和瞬态动力学分析，得到的分析数据和结论对桥式起重机动态设计提供了有效的手段，论文主要内容包括：根据起重机动力学理论，建立了相关动力学模型，并对桥架结构进行动态性能分析(包括固有频率、振型以及动应力)的分析，探索出一种考虑钢丝绳滑轮组的动态特性在内的桥式起重机桥架结构动态应力分析的方法。

The thesis mainly includes: According to crane dynamic theory, established relevant dynamic model, and analyzed the dynamic properties of the bridge structure of the bridge crane, including the natural frequency, the model shape and the dynamic stress. A way to analyse the dynamic response of the bridge structure of the bridge crane which takes into account the dynamic properties of the steel rope pulley block has been explored successfully.

本文基于有限元理论和起重机动力学理论，以有限元分析软件ANSYS为平台，实现了计算机对钢丝绳系统和桥架的模态分析和瞬态动力学分析，得到的分析数据和结论对桥式起重机动态设计提供了有效的手段，论文主要内容包括：根据起重机动力学理论，建立了相关动力学模型，并对桥架结构进行动态性能分析（包括固有频率、振型以及动应力）的分析，探索出一种考虑钢丝绳滑轮组的动态特性在内的桥式起重机桥架结构动态应力分析的方法。

For the construction industry the extensive product program comprises construction cranes, truck and mobile cranes, crawler cranes, hydraulic excavators and hydraulic rope excavators, wheel loaders, crawler tractors and loaders, mining trucks, concrete mixing plant and truck mixers; liebherr''s products for cargo handling include ship, offshore, container and mobile dock cranes; the machinery and plant range encompasses machine tools, material flow technology and engineering projects; the aircraft equipment comprises landing gear, actuation and air-management systems; transport technology equipment comprising air conditioner for tran rapid in shanghai and other trains; in the domestic appliances area, liebherr specializes in refrigerators and freezers, with a range of more than 300 principal models.

用于建筑工业的产品有塔式起重机、轮胎式和汽车式起重机、履带式起重机、液压挖掘机和液压钢绳式挖掘机、轮式装载机、履带式推土机和履带式装载机、矿用自卸车、混凝土搅拌站和搅拌运输车等；利勃海尔用于货物转运的产品包括船用、钻井平台、集装箱式起重机；机械加工和工厂建设方面有机床、物流设备和工程项目；航空设备包括起落架、作动器和空气调节与管理系统、运输技术准备主要包括上海磁悬浮列车和其他火车用的空调器等；家用电器方面，利勃海尔专业生产基本型号达300余种的冷冻与冷藏设备。

For the construction industry the extensive product program comprises construction cranes, truck and mobile cranes, crawler cranes, hydraulic excavators and hydraulic rope excavators, wheel loaders, crawler tractors and loaders, mining trucks, concrete mixing plant and truck mixers; Liebherrs products for cargo handling include ship, offshore, container and mobile dock cranes; the machinery and plant range encompasses machine tools, material flow technology and engineering projects; the aircraft equipment comprises landing gear, actuation and air-management systems; transport technology equipment comprising air conditioner for Tran rapid in Shanghai and other trains; in the domestic appliances area, Liebherr specializes in refrigerators and freezers, with a range of more than 300 principal models.

用于建筑工业的产品有塔式起重机、轮胎式和汽车式起重机、履带式起重机、液压挖掘机和液压钢绳式挖掘机、轮式装载机、履带式推土机和履带式装载机、矿用自卸车、混凝土搅拌站和搅拌运输车等；利勃海尔用于货物转运的产品包括船用、钻井平台、集装箱式起重机；机械加工和工厂建设方面有机床、物流设备和工程项目；航空设备包括起落架、作动器和空气调节与管理系统、运输技术准备主要包括上海磁悬浮列车和其他火车用的空调器等；家用电器方面，利勃海尔专业生产基本型号达300余种的冷冻与冷藏设备。

All over the word, the name liebherr stands for a technically advanced, benefit-oriented range of products and services.for the construction industry the extensive product program comprises construction cranes, truck and mobile cranes, crawler cranes, hydraulic excavators and hydraulic rope excavators, wheel loaders, crawler tractors and loaders, mining trucks, concrete mixing plant and truck mixers; liebherr's products for cargo handling include ship, offshore, container and mobile dock cranes; the machinery and plant range encompasses machine tools, material flow technology and engineering projects; the aircraft equipment comprises landing gear, actuation and air-management systems; transport technology equipment comprising air conditioner for tran rapid in shanghai and other trains; in the domestic appliances area, liebherr specializes in refrigerators and freezers, with a range of more than 300 principal models.

在全世界范围内，利勃海尔这一名词代表着先进的技术、高性能的产品和优质的服务。n用于建筑工业的产品有塔式起重机、轮胎式和汽车式起重机、履带式起重机、液压挖掘机和液压钢绳式挖掘机、轮式装载机、履带式推土机和履带式装载机、矿用自卸车、混凝土搅拌站和搅拌运输车等；利勃海尔用于货物转运的产品包括船用、钻井平台、集装箱式起重机；机械加工和工厂建设方面有机床、物流设备和工程项目；航空设备包括起落架、作动器和空气调节与管理系统、运输技术准备主要包括上海磁悬浮列车和其他火车用的空调器等；家用电器方面，利勃海尔专业生产基本型号达300余种的冷冻与冷藏设备。

The main body can be stationary mounted, it can be hung with the aid of trolley on an l-steel track for straight and curved reciprocation, it can also be fixed on various cranes, such as single-beam bridge cranes, hanging cranes, arm cranes and gantry cranes, makes the operating range extended and the occasion increased.

其主体可固定安装或通过小车悬挂在工字钢轨道上作直线或曲线的运行，还能配用在单梁起重机、龙门起重机、悬挂起重机、悬臂起重机等多种起重机上，使作业面积扩大，使用场合增多。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。