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- Title
Design of Coal Conveying Belt Correction Device Based on FTA-QFD-TRIZ.
- Authors
Zhang, Xiufen; Wei, Zhanchao
- Abstract
The belt conveyor is a key piece of equipment for thermal power plants. Belt mistracking causes higher economic costs, lower production efficiency, and more safety accidents. The existing belt correction devices suffer from poor performance and high costs. Therefore, a design method for coal conveying belt correction devices is proposed in this paper based on fault tree analysis (FTA), quality function deployment (QFD), and inventive problem solving (TRIZ) theory. A user requirement mapping model was constructed to extract five user requirements based on the shortcomings of the existing belt correction devices. Moreover, the FTA model of product characteristics was established to obtain nine key product characteristics by dividing the minimum cut-set. Thus, a QFD model for the belt correction device design was constructed. The relationship matrix R–C relating the user requirements and the product characteristics was deduced based on the binary decision diagram theory to screen the key product characteristics. Furthermore, an innovative design model of the belt correction device was constructed, and the key design elements and contradiction matrix were determined. TRIZ theory was used to resolve the contradictions, and nine novel correction device design schemes were proposed. Finally, the correction performances of the schemes were compared and verified based on the experimental platform, and the final design scheme was determined. The test results showed that the device had good correction performances. The rationality and effectiveness of the innovative design method were verified.
- Subjects
QUALITY function deployment; FAULT trees (Reliability engineering); TRIZ theory; CONVEYOR belts; BELT conveyors
- Publication
Journal of Failure Analysis & Prevention, 2023, Vol 23, Issue 6, p2519
- ISSN
1547-7029
- Publication type
Article
- DOI
10.1007/s11668-023-01789-3