There are hoisting mechanism of crane, slewing mechanism, the luffing mechanism and metal structure selection in this article.
设计主要包括起重机的起升机构、回转机构，变幅机构及金属结构的选择。
The hoisting, derricking and slewing mechanism, the extension and contracting of booms, the setting down and back of outriggers, all are driven hydraulically.
该机的起升、变幅、回转、吊臂伸缩及支腿收放等机构，全部采用液压驱动。
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