Credibility and Security of Weighing System for Large Structure Object

作     者：章青 周延兴 

作者机构：School of Mechanical Engineering Tianjin UniversityTianjin 300072China 

出 版 物：《Transactions of Tianjin University》 (天津大学学报（英文版）)

年 卷 期：2006年第12卷第2期

页      码：92-95页

摘      要：The weighing system designed for large structure object is mainly composed of three parts. The part of hydraulic system is made up of hydraulic cylinders, high pressure hydraulic hoses and electric pumps; the part of computer controlling system comprises pressure sensors, displacement sensors, data acquisitions, RS 485 network and the computer controlling model; the part of loading system is composed of the fulcrum structure and the concrete girder. The measurement principle and composition of the weighing system are discussed in this paper. Credibility and security of the weighing system are fully considered during the design phase. The hydraulic system is controlled by pilot operated check valves in case of the sudden loss of system pressure. The states of all gauges and RS485 network are monitored by computer controlling system functioning in different modules. When the system is running incorrectly, it will be switched to manual mode and give alarm. The finite element method is employed to analyze fulcrum structure so that the system has enough intensity to be lifted. Hence the reliability of the whole system is enhanced.

主 题 词：weighing system hydraulic system computer controlling loading system reliability and security 

学科分类：08[工学] 080401[080401] 0804[工学-材料学] 081102[081102] 0811[工学-水利类] 

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