Dynamic Response Analysis of a Novel Anti-Impact Pressure Balance Jack

Lirong Wan, Xuehui Yu, Dejian Ma, Zhaosheng Meng, Qingliang Zeng and Guoqing Qi
Additional contact information
Lirong Wan: College of Mechanical and Electrical Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Xuehui Yu: College of Mechanical and Electrical Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Dejian Ma: College of Mechanical and Electrical Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Zhaosheng Meng: State Key Laboratory of Mining Disaster Prevention and Control Cofounded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
Qingliang Zeng: College of Mechanical and Electrical Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Guoqing Qi: College of Mechanical and Electrical Engineering, Shandong University of Science and Technology, Qingdao 266590, China

Energies, 2022, vol. 15, issue 14, 1-15

Abstract: Coal resources perform an important role in China’s energy structure. Hydraulic support is the main supporting equipment of fully mechanized mining face in coal mines. Because the hydraulic support frequently bears the impact pressure from the working face, it is very easy to cause failure of the balance jack. In order to solve the problem that the balance jack easily damaged by impact and improve the impact resistance of the hydraulic support, an improved fast response balance jack with multiple adaptive buffers was proposed in this paper. The energy dissipation characteristics of the balance jack were analyzed by establishing the mathematical model of the multiple buffering process of it. Based on ADAMS, the dynamic simulation model of the hydraulic support was constructed, and the mechanical response characteristics of the proposed balance jack and the traditional balance jack under different impact loads were compared and analyzed. By changing the equivalent stiffness of the novel balance jack system, the influence of different initial inflation pressure and length of the buffer cavity on the dynamic performance of the novel balance jack was discussed. The results show that compared with the traditional balance jack, the multi-adaptive response balance jack proposed in this paper can reduce the peak force of the hinge point by about 24.6% and the fluctuation frequency was also significantly reduced under the ultimate load condition at the front end of the top beam, which has better impact resistance. When the initial inflation pressure of the buffer cavity is 40~45 MPa and the initial length is less than 105 mm, a better buffer effect can be achieved. This study provides a new solution to solve the failure problem of the balance jack under the underground impact pressure and improve the safety and reliability of hydraulic support.

Keywords: mining machinery; shield hydraulic support; balance jack; impact of underground pressure; buffer (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/14/5236/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/14/5236/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:14:p:5236-:d:866455

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().