公开(公告)号：US20210198046A1

公开(公告)日：2021-07-01

申请号：US17057112

申请日：2018-10-29

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY

Inventor： Nong ZHANG ,  Zhengzheng XIE ,  Junyao ZHOU ,  Qun WEI

IPC: B65G15/48 ,  B65G41/00

Abstract: A steel belt conveying apparatus includes upper and lower horizontal conveying portions, left and right inclined conveying chains, a connecting rod frame, an inclined frame, a drive portion, and a height adjustment cylinder. The left inclined conveying chain is separately connected to the upper and lower horizontal conveying portions. The right inclined conveying chain is separately connected to the upper and lower horizontal conveying portions. A top portion of the connecting rod frame is hingedly connected to an upper horizontal frame of the upper horizontal conveying portion. A bottom portion is hingedly connected to a lower frame of the lower horizontal conveying portion. A top portion of the inclined frame is hingedly connected to an upper horizontal drive shaft of the upper horizontal conveying portion, and a bottom portion is hingedly connected to a lower horizontal drive shaft of the lower horizontal conveying portion.

公开(公告)号：US20210404337A1

公开(公告)日：2021-12-30

申请号：US16616603

申请日：2018-11-02

Applicant: China University of Mining and Technology

Inventor： Nong ZHANG ,  Zhengzheng XIE ,  Junyao ZHOU ,  Yanpei AN

IPC: E21C41/18 ,  E21F15/00 ,  E21F1/04 ,  E21F13/06

Abstract: A synergistic mining method for underground mining, separation and filling for a close distance coal seam group is applicable to the mining engineering field. Full-mechanized caving mining is carried out for a close distance coal seam group, an underground coal gangue separation system and a filling face are designed according to the yield of gangue in the production process; the gangue produced in the mining process is transported centrally into an underground coal gangue separation chamber, and the separated gangue is transported to the filling face for filling and mining; the gangue produced at the filling face is transported back to the filling face for backfilling after underground washing separation. The method separates nearby and filling at selected locations, reduces the damage and disturbance to the underground rock mass that may be caused by a conventional mining method, and solves problems in treatment of strong dynamic pressure in advance.

公开(公告)号：US20210270134A1

公开(公告)日：2021-09-02

申请号：US17257239

申请日：2018-10-29

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY

Inventor： Nong ZHANG ,  Zhengzheng XIE ,  Qun WEI ,  Junyao ZHOU

IPC: E21D23/08 ,  E21C25/10 ,  E21D23/00

Abstract: A method for operating a continuous mining machine having a device continuously providing provisional roof support, wherein the mining machine a rolling roof-protection portion which is fixed on a main machine frame of the continuous mining machine via a front column structure and a rear column structure. While the machine is cutting, the roof-protection device performs continuous load holding on a roof, and after cutting, performs support operations, thereby achieving simultaneous performance of cutting and support operations, and improving tunneling efficiency. Different support strengths are configured according to the hardness, completeness, and quality indicators of rock on a mine roof, such that the device is able to effectively support the roof.

公开(公告)号：US20210285857A1

公开(公告)日：2021-09-16

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：US20210222553A1

公开(公告)日：2021-07-22

申请号：US17059219

申请日：2018-10-29

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY

Inventor： Nong ZHANG ,  Zhengzheng XIE ,  Qun WEI ,  Junyao ZHOU

IPC: E21D19/00 ,  E21D20/00

Abstract: An apparatus for controllably unfolding a flexible mesh for a continuous miner includes a mesh roll storage rack, a height adjustment post, a mesh rolling shaft and a flexible mesh. The flexible mesh includes a mesh roll and an unfolded mesh. The mesh roll and the unfolded mesh are an integrated structure. The mesh roll is located on the mesh roll storage rack. The unfolded mesh is clamped on the mesh rolling shaft, and is pressed on a cut un-supported tunnel roof via a roof bolt. The mesh rolling shaft is rotatably connected to a top portion of the height adjustment post. The mesh roll storage rack and the height adjustment post are both mounted on the continuous miner. The mesh rolling shaft is located at a back end of the mesh roll storage rack. A limit mechanism and a damping mechanism are disposed on the mesh rolling shaft.