A trolleybeam is provided for engine and component removal.
吊车横梁用于拆卸引擎或组件。
2
The extension is spliced to the trolleybeam at one end, and is supported by a floor-standing posts at the other end.
在吊车横梁的一端有扩展来加固，由另一端的地轴架来支撑。
3
This paper describes general structure design and structure load test of girder type railway bridge erecting machine with single simple supported beam and overhead transversely travelling trolley.