Tower Crane Effective Life Assessment Based on Tower Crane Fleet Monitoring System

Abstract

How to obtain and make full use of reliable working information of tower crane fleet effectively is still a problem. Here, a monitoring system was built to help acquire tower crane working parameters and assess effective life. Firstly, based on Visual Basic and SQL Server technology, parameters were collected through wireless transmission, and then classified, saved and processed to get applicable load spectrum. Secondly, effective life was assessed and displayed directly through calling daemons. By using nominal stress method, effective life of dangerous points was calculated and real-time effective life assessment was realized, which could be taken as a reliable reference to take measures. Finally, an effective life calculation example of tower crane hoisting mechanism was provided. Results show that the system is accurate and reliable. The main advantage of the new method is its simplicity of implementation, with no need of extensive knowledge of load spectrum and nominal stress.

This work is partially supported by National Key Science and Technology R&D Program in the Eleventh Five-Year Plan Grant #2008BAJ09B02-2 to Zeguang Han and Xijian Zheng.