公开(公告)号：US11199484B2

公开(公告)日：2021-12-14

申请号：US16487425

申请日：2018-09-13

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY

Inventor： Nong Zhang ,  Zhengzheng Xie ,  Junyao Zhou ,  Yuxin Yuan ,  Xinyue Li

IPC: G01N3/10

Abstract: A device and method for testing the working performance of an anchor rod cable by simulating stratum fracture and separation on the basis of electromagnetic action, applicable to the technical field of testing working performance of anchor rod cables by simulating a tunnel field. The device comprises a top base (1) and a bottom base (2); a plurality of hydraulic vertical columns (3) are provided between the top base (1) and the bottom base (2); the plurality of hydraulic vertical columns (3) are provided thereon with clamping devices, and an electromagnetic block (9) is disposed between two groups of drawing block-shaped clamp holders (4). Using the attraction and repulsion forces of the electromagnetic block (9), the laminated electromagnetic block generates the separating or fracturing effect in a loading process so as to simulate the interaction between surrounding rock and an anchor rod cable test piece (8) in the field and accurately record various performance parameters of a working status of the anchor rod cable test piece (8), thereby providing positive guidance for directing field work.

公开(公告)号：US20200319069A1

公开(公告)日：2020-10-08

申请号：US16607351

申请日：2018-09-13

Applicant: China University of Mining and Technology

Inventor： Nong Zhang ,  Zhengzheng Xie ,  Junyao Zhou ,  Zhe Xiang ,  Xinyue Li

IPC: G01N3/10 ,  B21C1/02 ,  G01N3/04

Abstract: Disclosed are an integral clamping steel strand drawing test apparatus, and a method for using same, wherein same are suitable for use in a steel strand mechanical property test. The apparatus comprises a rectangular lower base (13) and a rectangular upper base (14), with a hydraulic telescopic mechanism being provided between the lower base (13) and the upper base (14), the hydraulic telescopic mechanism being provided with an integral clamping mechanism, a steel strand test piece (4) to be tested being provided in the integral clamping mechanism, the steel strand test piece (4) to be tested being provided with a plurality of binding protective devices (2), and a safety protection door (16) being provided outside the hydraulic telescopic mechanism. During a steel strand drawing test, the property of a steel strand itself is fully brought into play, and the integrity of the steel strand test piece (4) is maintained, thereby being able to accurately reflect various mechanical properties of the drawn steel strand while preventing damage to the device and injuring an operator caused by a fracture in a single strand or a plurality of strands of the steel strand during the test. The device is simple and easy to operate, and has good practicability and promotional and application value.

公开(公告)号：US11162882B2

公开(公告)日：2021-11-02

申请号：US16607351

申请日：2018-09-13

Applicant: China University of Mining and Technology

Inventor： Nong Zhang ,  Zhengzheng Xie ,  Junyao Zhou ,  Zhe Xiang ,  Xinyue Li

IPC: G01N3/10 ,  B21C1/02 ,  G01N3/04

Abstract: Disclosed are an integral clamping steel strand drawing test apparatus, and a method for using same, wherein same are suitable for use in a steel strand mechanical property test. The apparatus comprises a rectangular lower base (13) and a rectangular upper base (14), with a hydraulic telescopic mechanism being provided between the lower base (13) and the upper base (14), the hydraulic telescopic mechanism being provided with an integral clamping mechanism, a steel strand test piece (4) to be tested being provided in the integral clamping mechanism, the steel strand test piece (4) to be tested being provided with a plurality of binding protective devices (2), and a safety protection door (16) being provided outside the hydraulic telescopic mechanism. During a steel strand drawing test, the property of a steel strand itself is fully brought into play, and the integrity of the steel strand test piece (4) is maintained, thereby being able to accurately reflect various mechanical properties of the drawn steel strand while preventing damage to the device and injuring an operator caused by a fracture in a single strand or a plurality of strands of the steel strand during the test. The device is simple and easy to operate, and has good practicability and promotional and application value.