Patents Assigned to China University of Mining and Technology
  • Patent number: 11305946
    Abstract: The present invention discloses a drive system of a scraper conveyor and a control method. The drive system includes a nose sprocket, a tail sprocket, a nose sprocket drive mechanism, and a tail sprocket drive mechanism, where the nose sprocket drive mechanism is a hydraulic motor I, and the tail sprocket drive mechanism is a hydraulic motor II; and a hydraulic system that drives the hydraulic motor I and a hydraulic system that drives the hydraulic motor II include same hydraulic elements, and both include a three-position four-way solenoid directional valve, a two-position two-way solenoid directional valve, a two-position three-way solenoid directional valve, an accumulator, and an oil supplement valve group. The present invention is applicable to rapid starting and stopping of the scraper conveyor in a heavy load status while adjusting chain tension in real time, thereby resolving a power imbalance problem in a dual-drive system, and has a simple structure and a long service life.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: April 19, 2022
    Assignees: China University of Mining and Technology, JIANGSU TIANMING MACHINERY GROUP CO., LTD.
    Inventors: Gang Shen, Zhencai Zhu, Kaiyu Dai, Yu Tang, Xiang Li, Yuxing Peng, Hao Lu, Guohua Cao, Gongbo Zhou, Wei Li, Fan Jiang
  • Patent number: 11299954
    Abstract: Provided is a fracturing relief method for stress concentration of remaining ore pillars in an overlying goaf, including first, performing directional fracturing on a roof to optimize the stress of the roof and reduce the source of force; secondly, performing pulse fracturing on a coal pillar to produce a crack network, weaken the stiffness of the coal pillar and reduce the bearing capacity of the coal pillar; and finally, performing pulse fracturing on a floor strata of the coal pillar to reduce the ability of transferring stress concentration thereof. A drilling machine is used for separately constructing fracturing drill holes in a roadway to a set depth at an interval in a direction oblique to the coal pillar in an upper goaf. The roof, the coal pillar and the floor can be fractured by an oblique fracturing hole in a sublevel retreating manner. The position of the directional fracturing of the roof is approximately 1 m above the middle of a main roof above the coal pillar.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: April 12, 2022
    Assignees: China University of Mining and Technology, XUZHOU USURE MINING TECHNOLOGY CO., LTD
    Inventors: Bingxiang Huang, Luying Shao, Xinglong Zhao, Shuliang Chen
  • Patent number: 11286774
    Abstract: Disclosed is an interference protection device and method for a hydraulic support and a cutting part of a shearer. The device includes: a plurality of dust-proof cases evenly and fixedly provided on a surface of one side of a hauling part of the shearer that faces away from a coal wall, and a dust-proof housing fixed on the hydraulic support. A first ultrasonic transducer and a flash lamp are fixedly provided in each dust-proof case, and a second ultrasonic transducer, a receiver, and a data processing module are fixedly provided in the dust-proof housing. The data processing module is electrically connected to the second ultrasonic transducer and the receiver separately, the first ultrasonic transducers and the flash lamps are all electrically connected to an external single-chip microcomputer, and the data processing module is electrically connected to a hydraulic support control computer.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: March 29, 2022
    Assignees: China University of Mining and Technology, XUZHOU GOLDFLUID HYDRAULIC TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Zhongbin Wang, Honglin Wu, Chao Tan, Xuliang Lu, Bowen Liu, Xiaoyu Li, Yue Wu, Hongya Zhou
  • Patent number: 11280195
    Abstract: A single-anchor centrally grouted full-length anchored steel wire bundle and a supporting method thereof are described herein. The steel wire bundle consists of parallel steel wires and a central pipe, wherein multiple strands of parallel steel wires are arranged around the central pipe, the central pipe is provided with a slurry output bracket which divides the parallel steel wires into a front part and a rear part, the front part is provided with large stirring jackets, and the rear part is provided with a threaded casing on its tail end. After the coal is cut by a tunneling machine and a roadway is formed, the steel wire bundle is anchored at the ends, and the roadway tunneling speed is increased; central grouting is carried out for the steel wire bundle so as to anchor the steel wire bundle in full length and ensure long-time stability of the roadway.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: March 22, 2022
    Assignee: China University of Mining and Technology
    Inventors: Nong Zhang, Zhengzheng Xie, Junyao Zhou, Qun Wei
  • Publication number: 20220073283
    Abstract: A frictional force monitoring system for middle troughs of a scraper conveyor, comprising a scraper conveyor system and a sensing detection system. The scraper conveyor system consists of a machine body, middle troughs, thrust lugs, scrapers, a double chain, a sprocket, a speed reducer, an electric motor and a frequency converter. The sensing monitoring system consists of force receiving modules, a three-dimensional force sensor, and a pre-embedded temperature sensor. The frictional force monitoring system is able to monitor impact loads, frictional forces, friction coefficients, temperature, etc. between an annular chain, coal bulk, and middle troughs of the scraper conveyor under complex and severe operating conditions, and to provide the technical means for the design, safety early-warning and health evaluation of the scraper conveyor, and can provide a data basis for studying friction wear and fatigue breaking mechanism of middle troughs of a scraper machine.
    Type: Application
    Filed: November 26, 2019
    Publication date: March 10, 2022
    Applicant: China University of Mining and Technology
    Inventors: Dagang WANG, Ruixin WANG, Zhencai ZHU, Huilong ZHU, Gang SHEN, Xiang LI, Yu TANG
  • Publication number: 20220063927
    Abstract: The present invention discloses a drive system of a scraper conveyor and a control method. The drive system includes a nose sprocket, a tail sprocket, a nose sprocket drive mechanism, and a tail sprocket drive mechanism, where the nose sprocket drive mechanism is a hydraulic motor I, and the tail sprocket drive mechanism is a hydraulic motor II; and a hydraulic system that drives the hydraulic motor I and a hydraulic system that drives the hydraulic motor II include same hydraulic elements, and both include a three-position four-way solenoid directional valve, a two-position two-way solenoid directional valve, a two-position three-way solenoid directional valve, an accumulator, and an oil supplement valve group. The present invention is applicable to rapid starting and stopping of the scraper conveyor in a heavy load status while adjusting chain tension in real time, thereby resolving a power imbalance problem in a dual-drive system, and has a simple structure and a long service life.
    Type: Application
    Filed: April 10, 2020
    Publication date: March 3, 2022
    Applicants: China University of Mining and Technology, JIANGSU TIANMING MACHINERY GROUP CO., LTD.
    Inventors: Gang SHEN, Zhencai ZHU, Kaiyu DAI, Yu TANG, Xiang LI, Yuxing PENG, Hao LU, Guohua CAO, Gongbo ZHOU, Wei LI, Fan JIANG
  • Patent number: 11215046
    Abstract: Disclosed are a wellbore inspection system and method for an ultra-deep vertical shaft. The wellbore inspection system includes a wire rope moving system, inspection robots, a visual image acquisition system, a wireless communication module, a central control system, and an image post-processing system of an upper computer. The wire rope moving system includes a surface wire rope guide rail, an underground wire rope guide rail, a surface wire rope moving device, an underground wire rope moving device, and a wire rope. The visual image acquisition system includes explosion-proof cameras. After image information acquired by the explosion-proof cameras is processed by a lower computer, the processed image is transmitted by a wireless image transmission module to the image post-processing system of the upper computer. The central control system is connected to the inspection robots and the wire rope moving system, and the inspection robots are connected to the central control system.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: January 4, 2022
    Assignee: China University of Mining and Technology
    Inventors: Gongbo Zhou, Chaoquan Tang, Zhencai Zhu, Hongwei Tang, Zhenzhi He, Gang Zhang, Wei Li, Fan Jiang
  • Patent number: 11209415
    Abstract: A discrete element method for modelling fracture evolution of roadway surrounding rock is provided, which includes: taking rock cores from a coal seam in the field and recording RQD values, observing roadway deformation, and making a statistical analysis on distribution characteristics of fractures in the coal seam; testing mechanical parameters of coal-rock samples indoors, and calculating strength of a rock mass according to the RQD values; creating a numerical model by using a UDEC-Trigon module to adjust the parameters to match the strength of the rock mass, and correcting model parameters; and creating a numerical model of an engineering scale to adjust the parameters to match field deformation characteristics, and finally simulating fracture evolution of the roadway surrounding rock. The present invention provides accurate and basic mechanical parameters for discrete-element numerical simulation of roadway deformation, guaranteeing realistic and reliable simulation results.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: December 28, 2021
    Assignees: China University of Mining and Technology, China Mining & Civil New Material Science and Technology Ltd., BOXIA MINING TECHNOLOGY LTD.
    Inventors: Xiangyu Wang, Jianbiao Bai, Junwu Xia, Shuai Yan
  • Publication number: 20210390736
    Abstract: The present disclosure discloses an intelligent position sensing system based on spatial three-dimensional model image matching, which realizes three-dimensional precise positioning and target orientation positioning of closed spaces, such as a coal mine. The position sensing system includes a three-dimensional GIS server, a position matching server, a wireless camera, and a wireless access device. Position sensing is realized by comparing an image collected by the wireless camera with a two-dimensional image generated by rendering.
    Type: Application
    Filed: May 6, 2021
    Publication date: December 16, 2021
    Applicant: China University of Mining and Technology, Beijing
    Inventor: Yi LIU
  • Patent number: 11199484
    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).
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: December 14, 2021
    Assignee: China University of Mining and Technology
    Inventors: Nong Zhang, Zhengzheng Xie, Junyao Zhou, Yuxin Yuan, Xinyue Li
  • Patent number: 11199092
    Abstract: The present invention discloses a hard rock roadway and tunnel boring machine with actively rotating hobs, including a rack provided with a crawler track unit. The rack is provided with a hydraulic power unit and a high-pressure abrasive jet generation system connected therewith. A transmission box is fixedly arranged at one of ends of the rack. The transmission box is provided with two input shafts and one output shaft. The input shafts are connected with planetary reduction mechanisms. Input ends of the planetary reduction mechanisms are connected with cantilever disc driving motors. A cantilever disc is fixed to the output shaft. Four cantilevers are hinged to the cantilever disc. Cantilever driving motors are further arranged on the cantilever disc. Actively rotating hob devices are arranged at ends of the cantilevers away from the cantilever disc. The transmission box is further provided with rotary sealing devices.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: December 14, 2021
    Assignee: China University of Mining and Technology
    Inventors: Hongxiang Jiang, Songyong Liu, Zhencai Zhu, Changlong Du
  • Patent number: 11174722
    Abstract: The present invention provides an inversion calculation method of coal-bed gas parameters of fast test while-drilling. The technical solution is that an inversion calculation method of coal-bed gas parameters of fast test while-drilling includes: during drilling in a coal bed, testing a gas flow and a gas concentration of an orifice in real time while-drilling, calculating drilling gas discharge amounts of the orifice, inversely calculating a coal-bed gas pressure at a drill bit based on borehole and coal-bed permeability parameters, and calculating a coal-bed gas content according to a gas content and gas pressure relational expression. The present invention has the beneficial effects that the present invention does not occupy the drilling and drill rod replacement time, is accurate, convenient, real-time and fast, and can test and calculate the coal-bed gas parameters of each section along the whole borehole length.
    Type: Grant
    Filed: October 12, 2019
    Date of Patent: November 16, 2021
    Assignees: China University of Mining and Technology, XUZHOU FUAN TECHNOLOGY CO., LTD.
    Inventors: Enyuan Wang, Hao Wang, Jianchun Ou, Rongxi Shen, Xiyuan Wang, Baolin Li, Zhonghui Li, Xiaofei Liu
  • Publication number: 20210348471
    Abstract: Provided is a fracturing relief method for stress concentration of remaining ore pillars in an overlying goaf, including first, performing directional fracturing on a roof to optimize the stress of the roof and reduce the source of force; secondly, performing pulse fracturing on a coal pillar to produce a crack network, weaken the stiffness of the coal pillar and reduce the bearing capacity of the coal pillar; and finally, performing pulse fracturing on a floor strata of the coal pillar to reduce the ability of transferring stress concentration thereof. A drilling machine is used for separately constructing fracturing drill holes in a roadway to a set depth at an interval in a direction oblique to the coal pillar in an upper goaf. The roof, the coal pillar and the floor can be fractured by an oblique fracturing hole in a sublevel retreating manner. The position of the directional fracturing of the roof is approximately 1 m above the middle of a main roof above the coal pillar.
    Type: Application
    Filed: November 2, 2018
    Publication date: November 11, 2021
    Applicants: China University of Mining and Technology, XUZHOU USURE MINING TECHNOLOGY CO., LTD.
    Inventors: Bingxiang HUANG, Luying SHAO, Xinglong ZHAO, Shuliang CHEN
  • Publication number: 20210346740
    Abstract: The present invention discloses a vehicle-mounted large-flow fire-fighting foam fluid mixing system, including a supply kit, a mixing kit, a control kit, and a pipeline kit. The supply kit includes an auxiliary gas supply device, a fire pump, an integrated foam pump, a fire pump main motor, and a coupling. The mixing kit includes a fire monitor interface, a foam generating device, and a fluid mixing device. The control kit includes a foam mixing proportion single-chip microcomputer control system, an alarm module, a power module, an auxiliary air compressor switch module, a frequency converter, and a central control display screen. The pipeline kit includes an air drainage tube, a fire hose, a foam liquid pipe, and a pipeline valve. For the problems of flow fluctuation and low foam foaming efficiency, the present invention optimizes the design and adopts a new control policy, thereby implementing precise mixing under the large-flow condition.
    Type: Application
    Filed: May 14, 2019
    Publication date: November 11, 2021
    Applicant: China University of Mining and Technology
    Inventors: Ziyi JIANG, Wei LI, Jinsong ZHU, Fan JIANG, Ge ZHAO, Xiumei LIU, Beibei LI
  • Patent number: 11155275
    Abstract: Disclosed in the present invention are a rope climbing robot capable of surmounting an obstacle and an obstacle surmounting method thereof. The rope climbing robot includes a robot body. The robot body includes a shell, a drive module and a guide module. The shell is longitudinally cut into an even number of shell segments, and is laterally cut into a corresponding drive housing segment and a corresponding guide housing segment according to mounting positions of the drive module and the guide module in the shell. There is at least one guide module and at least one guide housing segment, and a shell opening mechanism is further mounted in the shell. The shell opening mechanism includes a first shell opening mechanism configured to open/close the guide housing segment and a second shell opening mechanism configured to open/close the drive housing segment.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: October 26, 2021
    Assignee: China University of Mining and Technology
    Inventors: Gongbo Zhou, Hongwei Tang, Chaoquan Tang, Zhencai Zhu, Zhenzhi He, Wei Li, Fan Jiang
  • Patent number: 11155419
    Abstract: The present invention discloses a dynamic reliability evaluation method for coupling faults of a middle trough of a scraper conveyor. Approximation precision of a moment-based saddlepoint approximation method and a function attribute of dynamic t-copula are fully utilized, and the dynamic reliability evaluation method for the coupling faults of the middle trough of the scraper conveyor is provided, so that dynamic correlation between failure modes of the middle trough of the scraper conveyor under a small sample condition is more accurately described, and accuracy of dynamic reliability evaluation of the coupling faults of the middle trough of the scraper conveyor is improved.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: October 26, 2021
    Assignee: China University of Mining and Technology
    Inventors: Hao Lu, Zhencai Zhu, Fan Jiang, Wei Li, Yuxing Peng, Gongbo Zhou, Gang Shen, Dagang Wang, Yu Tang, Xiang Li
  • Publication number: 20210316946
    Abstract: The present invention discloses a dynamic reliability evaluation method for coupling faults of a middle trough of a scraper conveyor. Approximation precision of a moment-based saddlepoint approximation method and a function attribute of dynamic t-copula are fully utilized, and the dynamic reliability evaluation method for the coupling faults of the middle trough of the scraper conveyor is provided, so that dynamic correlation between failure modes of the middle trough of the scraper conveyor under a small sample condition is more accurately described, and accuracy of dynamic reliability evaluation of the coupling faults of the middle trough of the scraper conveyor is improved.
    Type: Application
    Filed: July 26, 2019
    Publication date: October 14, 2021
    Applicant: China University of Mining and Technology
    Inventors: Hao LU, Zhencai ZHU, Fan JIANG, Wei LI, Yuxing PENG, Gongbo ZHOU, Gang SHEN, Dagang WANG, Yu TANG, Xiang LI
  • Patent number: 11143025
    Abstract: A mine exploitation method based on stoping, separation and filling control is disclosed herein. The method includes deploying a gangue-less coal mining system; choosing a suitable coal and gangue separation method according to a separation requirement; choosing a suitable filling method according to mine geology, production conditions and rock stratum control requirement; reversely calculating a filling rate according to gangue discharge requirement and control indexes by utilizing theoretical calculation, simulation and experiment; determining a filling process and a separation process according to the filling rate; and feeding back and adjusting the filling process and separation process parameters by monitoring filling and control effect indexes.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: October 12, 2021
    Assignees: China University of Mining and Technology, Xuzhou Zhongkuang Backfilling & Mining Technology Co. Ltd.
    Inventors: Jixiong Zhang, Qiang Zhang, Zhongyu Wu, Feng Ju, Jiaqi Wang, Yang Chen
  • Patent number: 11136878
    Abstract: A movement-synchronized wellbore inspection system and a movement-synchronization control method thereof are disclosed. The wellbore inspection system comprises a rope-climbing robot, a wire rope, a ground wire rope moving device, a ground wire rope moving track, an underground wire rope moving device, an underground wire rope moving track, an inertial sensor and a control device. An upper end of the wire rope is connected to the ground wire rope moving device, and an lower end of the wire rope passes through the rope-climbing robot and is then connected to the underground wire rope moving device. The control device controls the underground and ground wire rope moving devices to move in synchronization, and then the inertial sensor carried on the rope-climbing robot detects posture data of the wire rope and transmits the data to the control device.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: October 5, 2021
    Assignee: China University of Mining and Technology
    Inventors: Chaoquan Tang, Gongbo Zhou, Hongwei Tang, Zhenzhi He, Gang Zhang, Wei Li, Fan Jiang
  • Patent number: 11131172
    Abstract: A method for extracting gas by fracturing a coal seam through a combination of hydraulic slotting and multi-stage combustion impact wave comprises cutting slots in an impact borehole using a hydraulic slotting equipment to perform pressure relief and permeability enhancement on a coal seam and enlarge a N2 (nitrogen gas) or CO2 (carbon dioxide gas) storage space, injecting a large amount of N2 or CO2 into the borehole by means of a high pressure gas cylinder and a pressure reducing valve through a gas injection and extraction pipe, then injecting a certain amount of methane and dry air into a high-temperature and high-pressure combustion chamber by means of the high pressure gas cylinder and the pressure reducing valve, so that the gases are mixed and combusted to form high-temperature and high-pressure impact wave to push a piston to compress the N2 or CO2, thereby generating a large number of factures on the coal seam around the impact borehole under guiding action of the slots.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: September 28, 2021
    Assignees: China University of Mining and Technology, Xuzhou Boan Science & Technology Development Co., Ltd
    Inventors: Baiquan Lin, Yang Zhao, Wei Yang, Qingzhao Li