Crane Span Structure的意思|示意

Manual Single-beam crane is configured by crane span structure, cart driving device and manual monorail car and other major parts.

手动单梁起重机系由桥梁，大车传动机构，手动单轨行车等主要部分组成。

To install the crane span before installation, camber, level of metal structure of main girder bending, trolley rail height difference, gauge deviation, diagonal bridge survey.

安装前要对起重机安装跨度，金属结构主梁的拱度、水平旁弯，小车轨道高低差、轨距偏差，桥架对角线等进行测量。