The Research And Design Of A Safety Monitoring And Performance Evaluation System For Bridge Crane

Crane is one kind of special equipments. It plays an important role in modern industry activities. Crane accidents can lead to serious consequences. According to related statistics, most crane accidents were caused for lack of sufficient management and surveillance. It will be of great significance to develop a crane safety monitoring system to reduce crane accidents and to help the normal process of industry activities.While the safety monitoring is one side of the management and surveillance of crane, performance evaluation is the other. Residual life and energy consumption are the two important items of crane characteristics. Residual life estimation can tell the fatigue state of a crane and helps to conduct timely maintenance which can guarantee the safe operation and maximizing utilization of a crane. Energy assessment can tell the energy consumption of a crane during its operation and is also the base of the research of testing method of energy efficiency of a crane. The methods of residual life estimation and energy assessment of a crane have been researched in this article. And the performance evaluation of a crane has been combined together with safety monitoring in this system, which can manage and surveille cranes more comprehensively.A universal bridge crane has been taken as the research object in this article. A safety monitoring and performance evaluation system for bridge crane has been designed and developed, which can both monitor the state of a crane and estimate the residual life and energy consumption of the crane. The specific research contents of this article include:1. Analyzed the working process of a bridge crane and picked out the dangerous working states. With reference to the national standard GB/T 28264-2012, determined the contents to be monitored and the signals to be acquired.2. Studied metal fatigue life theory. Analyzed the steps to estimate the residual life of a bridge crane with nominal stress method in detail. Determined the related signals to be acquired.3. Starting from considering each mechanism separately and researching by every working cycle, analyzed the energy efficiency of the mechanisms of a bridge crane during its working process. Built up an evaluation indicator of energy efficiency for bridge crane. Determined the signals to be acquired to assess the energy consumption.4. Determined the methods to acquire the signals for safety monitoring, residual life estimation and energy consumption assessment for a bridge crane. Designed and developed a safety monitoring and performance evaluation system for bridge crane.The safety monitoring and performance evaluation system for bridge crane designed by this article has been proved to work well by field experiments. It is of great significance in engineering to apply this system to enhance the management and surveillance of cranes.