吊重起重机  hoist crane

二自由度起重机机架模型  two-degree-of-freedom crane system

发动机起重机  engine hoist

滚轮起重杆  bobbin derrick

起重机机体  hauler body

起重机链  elevator chain; crane chain

起重机起升机构  hoisting mechanism of crane; crane lifting mechanism

起重机升降机卷扬机起重机司机  Hoister

塔式起重机机  tower crane

应急起重机机车起重机  breakdown crane

轮重调整  wheel load adjustment

支重轮滚轮总成  bogie roller assembly

摇臂式凸轮滚轮机构  arm type cam roller mechanism

车架滚轮调整步骤  carriage roller adjustment procedure

码速调整-调整  junction temperature

提升主架承载滚轮调整检查  mast load roller adjustment check

1100t门式起重机  1100t frame crane

125/32起重机  Crane

2000kN坝顶门式起重机  2 000 kN dam－ crest portal c rane