公开(公告)号：US11703431B2

公开(公告)日：2023-07-18

申请号：US17585960

申请日：2022-01-27

Applicant: Taiyuan University of Technology

Inventor： Guorui Feng ,  Xudong Shi ,  Jinwen Bai ,  Xinyu Yang ,  Boqiang Cui ,  Xianjie Du

IPC: G01N3/10 ,  G01N3/06 ,  G01N3/02 ,  G01N3/08

CPC classification number: G01N3/10 ,  G01N3/06 ,  G01N3/02 ,  G01N3/08 ,  G01N2203/0003 ,  G01N2203/0017 ,  G01N2203/0048 ,  G01N2203/04 ,  G01N2203/06

Abstract: A device and a method for testing tensile resistance of multiple-row grouped pillars in an inclined goaf are provided. The bottoms of stands of the device are connected with a testing machine base, and the tops of the stands of the device are connected with a transverse frame; an upper slideable clamping seat and a lower slideable clamping seat are semi-cylindrical blocks, multiple lower loading jaws that are positioned to have a same central line are arranged on the lower slideable clamping seat, each of the lower loading jaws is opposite to a corresponding one of the upper loading jaws, the lower loading jaws are welded to the lower slideable clamping sea to test the tensile resistance of samples together; the upper part of the upper slideable clamping seat is connected with an upper pressure disk, and the lower slideable clamping seat is connected with a lower pressure disk.