A study on force transmission in a hydraulic support under impact loading on its canopy beam

作者：Liang, Li Chuang; Tian, Jia Jin; Zheng, Hui; Jiao, Su Juan^*

来源：Journal of China Coal Society, 2015, 40(11): 2522-2527.

DOI：10.13225/j.cnki.jccs.2015.7021

• Adaptive Control
• Elastic structures
• Force transmission
• Hydraulic cylinders
• Hydraulic support
• Impact response
• Multibody dynamics model
• Strength design

To study the force transmission in a hydraulic support under impact loading, a multi-body dynamics model of hydraulic support was established by using ADAMS®. Its column hydraulic cylinders, balancing hydraulic cylinder, canopy beam, front link, rear link and cover shield beam were modeled as elastic structures. A specified preloading was applied on the support to represent the static load under normal working conditions, and the impact force on the support caused by possible basic roof fracture or collapse was considered as a step load. Based on this numerical simulation model, the force transfer coefficient of the hinge point of hydraulic support was calculated considering that the impact loading was applied on the different locations of its canopy beam. Meanwhile, the sensitivity of the force of the hinge point to the positions of the impact loading was evaluated. The results show that the force transmissions of the hydraulic support via all hinge points vary with the positions of impact loading, and the sensitivity of the force to impact loading position is hinge point-dependent. The results are useful for the adaptive control and strength design of hydraulic supports.

• 出版日期2015
• 单位上海交通大学