Author:
Ren Zhigui,Li Jiahao,Pang Xiaoping,Liu Jurong,Li Tianyu,Yu Songsong
Abstract
AbstractThe theoretical digging force is the maximum digging resistance that an excavator can overcome, which is an important measure of its digging capacity. To study the matching of the digging capacity with the actual demand and the matching of the working device mechanism, a 36.5 t backhoe hydraulic excavator is used as an example to analyse the distributions of the digging resistance under two different normal digging area working conditions and the maximum digging resistance characteristics of the tool. An appropriate digging postures are selected, based on limit digging force and compound digging force models, the theoretical digging forces under the two working conditions are obtained and matched with the measured digging resistance force values and the limiting factors affecting the digging force. The results show that the average percentage of theoretical digging forces greater than the measured digging resistance under both calculation models is 84.06% rather than 100%. The results of different digging methods all indicate that small chamber locking of the boom cylinder is too often the limiting factor for the digging force, resulting in poor matching of the working device. This study provides guidance for the improvement of the theoretical digging force model and the evaluation of the matching characteristics of the working device.
Funder
Shaanxi Provincial Technology Innovation Guidance Special Fund
Shaanxi Provincial Department of Science and Technology General Project
Publisher
Springer Science and Business Media LLC
Reference25 articles.
1. McKyes, E. Soil Cutting and Tillage 192–221 (Elsevier, 1985).
2. Park, B. Development of a Virtual Reality Excavator Simulator: A Mathematical Model of Excavator Digging and a Calculation methodology, Virginia Polytechnic Institute and State University (2002).
3. Wei, B. & Gao, F. Output force capacity polytope approach for actuator forces selection of three degrees of freedom excavating manipulator. Proc. Inst. Mech. Eng. C J. Mech. Eng. Sci. 228, 2007–2017 (2014).
4. Wang, T. J. et al. Performance analysis of hydraulic excavator based on DEM-MBD co-simulation. J. Jilin Univ. 10, 10–11. https://doi.org/10.13229/j.cnki.jdxbgxb20200953 (2022).
5. Bi, Q. S. et al. Excavation resistance simulation and experiment of mechanical excavator based on discrete element and multi-body dynamics co-simulation. J. Jilin Univ. 49, 106–116. https://doi.org/10.13229/j.cnki.jdxbgxb20170866 (2019).
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献