公开(公告)号：US20190024460A1

公开(公告)日：2019-01-24

申请号：US15757681

申请日：2016-07-11

Applicant: SHANDONG UNIVERSITY

Inventor： Shucai LI ,  Qingsong ZHANG ,  Guangming PAN ,  Rentai LIU ,  Xiao ZHANG ,  Lei YANG ,  Kai WANG ,  Zhaofeng LI ,  Haitong SUI ,  Teng YANG ,  Chunguo LIU

IPC: E21B10/60 ,  E21B33/13 ,  E02D3/12

Abstract: An anti-collapse jet grouting drill bit with bi-directional rib wings, and a grouting consolidation including: a grouting pump connected to a high-pressure pipeline, which connects to an underground drill rig; an outer flat drill rod, connected with the underground drill rig; a sealing device, sheathed on the outer flat drill rod at the orifice of a drill hole, ensuring the outer flat drill rod is sealed with the orifice of the drill hole which connects to a jet grouting drill bit with bi-directional rib wings. The grouting pump jets slurry into the drill hole in a static osmotic manner through the jet rib wing drill bit, while the underground jet drill rig is rotated by the force of outer flat drill rod. The rotation of the jet slurry and the rib wings, repairs the hole wall by cutting chippings or squeezing the chippings back into the hole wall.

公开(公告)号：US20220380133A1

公开(公告)日：2022-12-01

申请号：US17752968

申请日：2022-05-25

Applicant: Shandong University of Science and Technology ,  Wisdom Technology & Industry (Qingdao) Co., Ltd.

Inventor： Hongyu SUN ,  Xingguo YUAN ,  Xiao ZHANG ,  Geng CHEN ,  Yinjing GUO ,  Xiang LU ,  Lijun BI ,  Qingan DING ,  Jie GAO

IPC: B65G43/00 ,  B65G19/28 ,  E21F17/18

Abstract: The present invention relates to the technical field of mining instruments, and discloses a sensing method for collecting multivariate information at a goaf side of chutes based on scraper conveyors, wherein gesture sensors are provided at a goaf side of the chutes of a scraper conveyor; building an equivalent model of the chutes, fusing constants and variants of relative information and distance measurements methods, determining collection of multivariate information of detection bodies of the gesture sensors of the chutes and combinational logic algorithms thereof; and sensing gesture changes of the chutes by the detection bodies of the gesture sensors of the chutes and conducting collection of the multivariate information and analyzing relative changes and trends of gestures between the chutes. The present invention can further improve detection real time properties, accuracy, coverage, reliability and environment adaptability compared with other measurement methods.