Study on test and preparation of load spectrum of hydraulic excavator

• Main Authors: Zhang, Hong, Feng, Guodi, Zhang, Haijun, Wang, Xiaofeng, Zhang, Yingzhi
• Format: Conference Proceeding
• Language: English
• Published: SPIE 23.01.2017
• ISBN: 1510610804; 9781510610804
• ISSN: 0277-786X
• DOI: 10.1117/12.2266910

Due to harsh working conditions, the components of hydraulic excavator are subject to large amount of alternating load and random load during the operation and they are seriously damaged. The test of load signal and preparation of load spectrum for the hydraulic excavator are studied in this paper. In the first place, pretreatment of filtering and noise reduction for load signal is conducted based on experimental test on site and experimental working condition analysis. After the load signal is processed in sections, distribution fitting is performed for information like mean amplitude after rain flow counting with the approach of probability statistics to get the probability distribution function for mean value and amplitude value. Finally the two dimensional load spectrum for mean amplitude is obtained and program spectrum loading solution of fatigue experiment is given. The study of load signal test and load spectrum preparation method for hydraulic excavator conducted in this paper is of great significance for clarification of load distribution of excavator and further reliability test of excavator.