| 2. | Tower crane has following characteristics : discontinuous working , starting & braking frequently ; there are noticeable vibration and impulsion in running ; high lifting height and extend rang , heavy lifting moment , etc . with the advent of more and more high - rise and large - scale buildings , requirements for the efficiency , lifting height , lifting moment , and safety features are becoming higher and higher
塔式起重机具有下述工作特点:断续工作、频繁启动、制动;运行过程中有明显的振动和冲击;起升高度和工作幅度较大,起重力矩大。随着社会中各类高层建筑和大型工程的出现,使其对塔机的工作效率、起升高度、起重力矩和安全性等工作性能提出了更高的要求。 |
