农业机械学报2025，Vol.56Issue(12)：59-68,10.DOI:10.6041/j.issn.1000-1298.2025.12.004
大马力拖拉机典型行驶工况轮耦合试验方法研究
Coupled Wheel Testing Method under Typical Driving Conditions of High-horsepower Tractors
摘要
Abstract
Tractors are the most widely used power machinery in agricultural production.Conducting durability simulations of tractors under real-world operating conditions through laboratory test benches is of great significance for improving their reliability.A four-column wheel coupling test bench was utilized to explore the whole-machine durability testing methodology for tractors.An operational load acquisition system was established to collect load data under actual working conditions.Accelerated life testing was conducted by using three different identification methods:the time-domain damage retention identification method,the time-frequency analysis-based cumulative power spectral density identification method,and the wavelet transform-based envelope identification method.The effectiveness of these acceleration methods was validated through wheel coupling bench testing.The results indicated that,within the application scenarios and iterative approaches adopted,the time-frequency analysis-based cumulative power spectral density identification method demonstrated superior performance in signal compression,achieving a reduction ratio of 36.37％.The drive load spectra for the wheel coupling test bench were iteratively derived from both the original signal and the three accelerated signals.The loading results demonstrated that when the chassis and cab were selected as test targets,the damage reproduction tendency at designated measurement points was effectively achieved.Under the same test conditions but with different acceleration identification methods,the time-frequency analysis-based cumulative power spectral density identification method showed superior consistency in reproducing chassis damage,while the time-domain damage retention identification method performed better in replicating cab damage.关键词
拖拉机/轮耦合试验/耐久性/加速编辑Key words
tractor/wheel coupling test/durability/acceleration editor分类
农业科技引用本文复制引用
GUO Zhiqiang,SONG Zhenghe,XIANG Lingfang,YANG Zihan,HUANG Shengcao,LIN Hengchu,HE Huawei..大马力拖拉机典型行驶工况轮耦合试验方法研究[J].农业机械学报,2025,56(12):59-68,10.基金项目
国家自然科学基金项目(52472462) （52472462）
