门座式起重机的工作机构振动历程有特殊性。
The vibration course of the working mechanism of the portal crane has its particularity.
单臂架门座式起重机结构简单、起重量大自重轻。
Simple arm frame gantry crane structure, lifting large light weight.
最后作为复杂机械产品的应用实例，建立了港口门座式起重机的CAD系统模型。
As an example, we build the model of the portal crane CAD system to verify the above techniques and criterions.
四连杆门座式起重机采用最佳优化的组合臂架系统，具有水平落差小、变幅平稳、功耗低的特点。
Four-link portal crane using the best combination of optimized boom system, with horizontal small gap, amplitude stable, low power consumption.
随着变频器的日益普及，其在港口设备上得到了广泛的应用，门座式起重机也普遍采用了变频控制技术。
Along with popularizing of inverter increasingly, inverter is widely used in many harbour facilities such as portal crane.
对国内一种新兴的建筑机械——擦窗机进行基本介绍，并对比擦窗机和门座式起重机，阐述两者设计的异同点。
The article introduce a new construction machine gondola, and makes a comparison between the gondola and the gantry.
文章详细介绍了超大型高架门座式起重机液压同步预升设备的工作原理和液压系统组成，并对液压系统进行了较全面的分析。
The paper introduces in detail the working principle and make-up of the hydraulic synchronisation lifting device for lifting a high portal crane and gives an overall analysis of its hydraulic system.
门座式起重机分单臂架和四连杆两种类型，起重机的起升、变幅、回转和行走四大机构均采用交流变频调速，整机采用PLC控制，使用性能优越。
Portal crane sub frame and four-link arm two types, from the crane hoisting, luffing, slewing and walking four agencies ac frequency control, the machine USES PLC control, superior performance.
门座起重机是我国研制最早、具有重要代表性的一种旋转式有轨起重机。
The partially slewing crane is a kind of representative rotary rail crane, which is also the first developed type in our country.
门座起重机是我国研制最早、具有重要代表性的一种旋转式有轨起重机。
The partially slewing crane is a kind of representative rotary rail crane, which is also the first developed type in our country.
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