Investigation of dynamic behaviour of four-leg hydraulic support under double-impact load

Xie, Yunyue (author), Zeng, Qingliang (author), Jiang, Kao (author), Meng, Zhaosheng (author), Li, Qinghai (author), Zhang, Junming (author)

Hydraulic support is the key support equipment for underground coal mining. The frequent impact load during the mining process easily causes damage to the hinge joints and reduces the stability of the hydraulic support. To improve the stability of the hydraulic support, a rigid-flexible coupling numerical model of the support has been developed. The validity of the model is verified through the static loading test. Next, the impact loading test of the hydraulic support is carried out. The force response characteristics of the hinge joints and the vibration response characteristics of the leg system are discussed when both the canopy and goaf shield bear impact load. The results indicate that when only the canopy bears the impact load, the hinge joint of the front leg is the most sensitive (up to 139.4 %). When the impact load acts both on the canopy and goaf shield, the dynamic response of each hinge joint of the hydraulic support (except the rear leg) reaches the peak value. With the backward movement of the impact load on the goaf shield, the hinge joint force presents different pressure-relief characteristics.

• Language: English
• Keywords: impact load, four-leg hydraulic support, double-impact, force transmission, numerical simulation
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Publication date: 25.04.2022
• Year: 2022
• Number of pages: 10 str.
• Numbering: Vol. 68, no. 6
• PID: 20.500.12556/RUL-138109
• UDC: 621.22:004.02
• ISSN on article: 0039-2480
• DOI: 10.5545/sv-jme.2022.54
• COBISS.SI-ID: 114857475
• Publication date in RUL: 11.07.2022

Record is a part of a journal

• Title: Strojniški vestnik
• Shortened title: Stroj. vestn.
• Publisher: Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
• ISSN: 0039-2480
• COBISS.SI-ID: 762116

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 25.04.2022

Secondary language

• Language: Slovenian
• Title: Preiskava dinamičnega vedenja štirinožnega hidravličnega podporja pod vplivom dvojnih udarnih obremenitev
• Keywords: udarna obremenitev, štirinožno hidravlično podporje, dvojni udarci, prenos sil, numerična simulacija, dinamične lastnosti, zveza brez zračnosti