管架是通过一个装在支架框和下摇动臂之间的液压缸往返于其贮存位置的。
The pipe racks are moved to and from their stored position by a hydraulic cylinder attached between the mast frame and the lower swing arm.
传统的液压步进式脚手架的同步系统采用简单的同步缸进行控制，同步精度较低且设备可扩展性不足。
The former synchronization system of the hydraulic step-by-step scaffold was a simple synchronous cylinder, the synchronization accuracy of which was low and the expansibility was not yet enough.
各 液压缸的下支点与横向行走机架固定，液压缸的顶端与承重架底平面 连接。
The lower fulcrum of each hydraulic cylinder is fixed with the transverse walk frame; the top of the hydraulic cylinder is connected with the bottom plane of the bearing frame.
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