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- Orbital portal crane 轨道式门座起重机
- A brand-new jib-bridge luffing system of crane is brought out based on analysis of the limitation to handle containers of the portal crane. 摘要在分析门座起重机用于集装箱装卸作业的局限性的基础上，提出一种新型的起重机变幅系统。
- This paper discusses creative long-distance slippage and dragging technology based on the success in extra-wide, extra-high and extra-weight large portal crane transferring. 根据超宽、超高、超重的大型龙门起重机整机搬迁工程的成功实例，分析其具有原创意义的超长距离滑移拖曳工艺。
- If the lower support bearing of the slewing mechanism in M10-25 portal crane occurs failue, the protal crane occurs vibration, unusual sound and strenuous rotation during slewing. 2 5门机回转机构下支承轴承出现故障时,使门机回转时产生振动、异响和回转吃力等现象。
- Gantry crane, loading/unloading bridge, portal crane and tower crane are big lifting appliances with large windward area, usually working in open air and subject to wind lead. 门式起重机、装卸桥、门座起重机和塔式起重机等大型设备一般都在露天工作,迎风面积大,承受较大的风载荷。
- This paper introduces the structure and technical characteristic of special track container on large con- tainer stack portal crane which is fitted for high density stack. 介绍适用于高密度堆存的大型集装箱堆场专用轨道式集装箱门式起重机的结构和技术特点。
- This paper introduces rebuilding electric control system of portal crane drived by DC and the application of digital DC speed controller,PLC and touchable industrial graphic monitoring system. 简要介绍直流驱动的门机电控系统改造,包括数字式直流调速器、PLC和触摸式工业图形监控系统的应用。
- Except the basic characters of ZS2,ZS5187 container spreaders own the following characteristics:1.Equipped dual-rotating head,it is applicable to the floating crane and portal crane;2. 集装箱吊具系列：ZS5187吊具具有ZS2系列吊具的基本特征，还有以下特点：1配置了双吊点旋转头，适用于浮式起重机和门式起重机;
- Combining the design of portal crane luffing mechanism, this paper sets up the math model of the luffing system of the brachial-bridge container crane with combined compensating pulley. 本文以新型的臂桥架岸边集装箱起重机变幅机构组合式货物水平位移补偿系统的模型为研究对象，建立了吊重水平落差最小的数学模型。
- By using I-DEAS, we realize the automatic and parametic design of the portal crane, and improve the design efficiency greatly, which provide a practical methods for the automatic drawing. 以I-DEAS为支撑平台,运行软件的内嵌语言，实现了门座式起重机的自动参数化设计，大大提高了设计效率，为工程设计的自动出图提供了一条可借鉴的技术途径。
- Design Method for Portal Crane with Single Boom 单臂架门机的设计方法
- The optimization design of portal cranes' luffing system is justa real world problem. 门机变幅系统优化设计是将优化设计方法应用于工程设计中的产物。
- Repair of the Slewing Device in Portal Crane 门座起重机回转传动装置故障修理
- Analysis of broken jib of portal crane with grab 抓斗门座起重机断臂分析
- Method for Reducing Wheel Load of Portal Crane 降低门机轮压的办法
- Improvement for cabl rolling set of portal crane 门座式起重机电缆卷线器改造
- The spacecraft is in orbit around the moon. 该航天器在绕月球轨道运行。
- Calculation of leg pressure for portal crane 门座起重机门腿压力计算
- Stand clear of the swinging boom of the crane. 不要走近转动的超重机吊杆。
- The space shuttle will orbit a weather satellite. 太空梭将把一个气象卫星送入运行轨道。
