公开(公告)号：US20230332991A1

公开(公告)日：2023-10-19

申请号：US17920553

申请日：2019-09-18

Applicant: Northeastern University

Inventor： Xiating FENG ,  Xiaojun YU ,  Jun TIAN

IPC: G01N3/12 ,  G01N3/06

CPC classification number: G01N3/12 ,  G01N3/066 ,  G01N2203/0256

Abstract: The invention relates to a one-way rapid electromagnetic unloading device suitable for a true triaxial testing machine, comprising a first electromagnet, a second electromagnet, a first electromagnet mounting base, a second electromagnet mounting base and a restraining disc. A frame of the true triaxial testing machine is provided with a mounting hole for the unloading device. The first electromagnet mounting base is fixedly mounted in the mounting hole for the unloading device, and the first electromagnet is fixedly mounted on the first electromagnet mounting base. The restraining disc is fixedly mounted at an opening of the mounting hole for the unloading device, and the second electromagnet mounting base is located between the restraining disc and the first electromagnet. The second electromagnet is fixedly mounted on the second electromagnet mounting base and is opposite to the first electromagnet.