The dissertation works on machinery house, fixed tie link and boom, which vibrate most severely on the container crane.
论文针对集装箱起重机振动现象较为严重的三处：机房、斜拉杆、前大梁进行了振动分析和抗振研究。
Four-link portal crane using the best combination of optimized boom system, with horizontal small gap, amplitude stable, low power consumption.
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。
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。
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