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41.发明申请公开(公告)号：US20210198046A1
公开(公告)日：2021-07-01
申请号：US17057112
申请日：2018-10-29
发明人： Nong ZHANG , Zhengzheng XIE , Junyao ZHOU , Qun WEI
摘要： 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.
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公开(公告)号：US11034054B2
公开(公告)日：2021-06-15
申请号：US17043686
申请日：2019-10-08
申请人： China University of Mining and Technology , China Mining & Civil New Material Science and Technology Ltd. , BOXIA MINING TECHNOLOGY LTD.
发明人： Hong Chang , Junwu Xia , Xiaofang Xiang , Xia Bai
摘要： A prefabricated stair modular assembly mold comprises a base, a step standard module, an upside module of a lower platform, an underside rotating module of a lower platform, an upside module of an upper platform, an underside rotating module of an upper platform, an underside common module, and an underside adjustment modules. Prefabricated stair molds of different dimensions are formed by means of locating holes provided in the assembling modules, and are then fixed by means of sliding holes at two ends. Further disclosed is a mounting method for said assembly mold. Said assembly mold has high positioning accuracy, and small accumulated error, improving the mounting efficiency of the prefabricated staircase mold.
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公开(公告)号：US20210172319A1
公开(公告)日：2021-06-10
申请号：US16763788
申请日：2019-04-18
发明人： Jixiong ZHANG , Meng LI , A.J.S.(Sam) Spearing , Baiyi LI , Guohao MENG , Hao YAN
摘要： A multilevel deep well cooling and geothermal utilization system and process. The system has a deep well heat harnessing system, a shallow part heat-exchanging system, and a high-temperature water lifting system. The deep well heat harnessing system has a heat absorbing pipe, a thermally-conductive fluid lifting pipe, a thermally-conductive fluid lowering pipe, temperature sensors, and a water pump. The shallow part heat-exchanging system has a heat-dissipating pipe, a heat-storing water pool, a water intake pump, a water intake valve, a temperature sensor and a liquid level meter. The high-temperature water lifting system has a water discharging pump, a flowmeter, a water discharging valve, and a high-temperature water lifting pipe.
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公开(公告)号：US20210148228A1
公开(公告)日：2021-05-20
申请号：US16626328
申请日：2019-04-01
申请人： China University of Mining and Technology , XUZHOU ZHONGKUANG BACKFILLING & MINING TECHNOLOGY CO.,LTD
发明人： Jixiong ZHANG , Qiang ZHANG , Wenyue QI , Meng LI , Jianfeng SUN , Guohao MENG
摘要： The present invention discloses a mine exploitation, separation and filling and X exploitation mode, including four “exploitation, separation and filling and X” exploitation modes, namely an “exploitation, separation and filling and retaining” exploitation mode, an “exploitation, separation and filling and treatment” exploitation mode, an “exploitation, separation and filling and extraction” exploitation mode, and an “exploitation, separation and filling and control” exploitation mode. The selection of the “exploitation, separation and filling and X” exploitation mode is determined by actual engineering needs. A goaf filling rate is designed to meet the actual engineering needs of the mine, solve the technical problems in mine resource exploitation, and realize the objective of green, harmonious and safe exploitation of coal resources. Compared with an original “exploitation, separation and filling” exploitation mode, the “exploitation, separation and filling and X” exploitation mode is more systematic and comprehensive and is beneficial to engineering promotion and application.
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公开(公告)号：US20210148205A1
公开(公告)日：2021-05-20
申请号：US16759733
申请日：2018-10-29
申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY , XUZHOU BOAN SCIENCE & TECHNOLOGY DEVELOPMENT CO.,LTD
发明人： Baiquan LIN , Yang ZHAO , Wei YANG , Qingzhao LI
IPC分类号： E21B43/247 , E21B43/00 , E21B43/16 , E21B43/26
摘要： The disclosure provides a method for extracting gas by fracturing a coal seam through a combination of hydraulic slotting and multi-stage combustion impact wave, comprising first 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 or CO2 storage space, then 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. The impact wave is repeatedly generated to form a multi-stage impact, and the impact of the next stage is based on the impact of the previous stage, so that the fractures on the coal seam around the borehole are further expanded and run through. After the N2 or CO2 is compressed by means of the multi-stage impact, more fracture networks are formed on the coal seam around the borehole under the guiding action of the slots and the fractures, thereby enhancing the borehole-based efficient gas extraction.
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公开(公告)号：US10989695B2
公开(公告)日：2021-04-27
申请号：US16760040
申请日：2019-07-01
发明人： Zhencai Zhu , Hao Lu , Shuang Cao , Yuxing Peng , Gongbo Zhou , Guohua Cao , Gang Shen , Wei Li , Dagang Wang , Fan Jiang
摘要： Disclosed are an online monitoring system for a crack on a hoist spindle and an operation method thereof. The system comprises: a rope power part, a crack detection part, a wireless transmission part, and a computer. The rope power part comprises two traction ropes, two guide wheels, two stepper motors, and two stepper motor drivers. The crack detection part comprises a spiral tube guide rail, a sliding body, and an ultrasonic generator. The wireless transmission part comprises three zigbee wireless sensing modules. The zigbee wireless sensing modules receive instructions from the computer and transmit the instructions to the stepper motor drivers to control the motors to rotate. The stepper motors drive the guide wheels to rotate to realize the winding of the ropes, so as to pull the sliding body to slide on the spiral tube guide rail. The ultrasonic generator clamped on the sliding body monitors the rotating spindle along the spiral tube guide rail. The zigbee wireless sensing modules transmit the detected data to the computer in real time. The present invention can effectively monitor a hoist spindle in time before a failure occurs, thereby avoiding safety accidents.
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公开(公告)号：US20210094045A1
公开(公告)日：2021-04-01
申请号：US15733895
申请日：2019-04-22
发明人： Xiahui GUI , Min LIU , Yaowen XING , Yangchao XIA , Yijun CAO , Jiaqian LUO , Peikun LIU , Zhigang WANG
摘要： Disclosed is an underground coal preparation process adopting a water medium, comprising: feeding raw coal into a special underground compact jigging machine to discharge overflow clean coal being dewatered through a φ1 mm fixed screen and screened through a φ13 mm classifying screen, and dewatering powder clean coal with a particle size less than 13 mm to obtain powder clean coal and a centrifugate; grading jigging middling coal by means of a φ13 mm classifying screen into block middling coal and powder middling coal, and dewatering the powder middling coal to obtain powder middling coal and a centrifugal liquid; and sending produced coal slime water to a water medium classifying and separation cyclone, and the obtained coarse middling coal slime and coarse clean coal slime respectively passing through a coarse middling and clean coal slime sieve bends, and then being dewatered.
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公开(公告)号：US10941659B2
公开(公告)日：2021-03-09
申请号：US16745650
申请日：2020-01-17
发明人： Renliang Shan , Haochen Zhang , Xiangsong Kong
IPC分类号： E21F17/103 , E21F17/16
摘要： The present invention discloses an I-shaped water-retaining dam for an underground reservoir in a coal mine. The I-shaped water-retaining dam is located between coal pillar dams to isolate an underground reservoir from a corresponding coal roadway. The I-shaped water-retaining dam includes an upper flange plate, a web plate, and a lower flange plate from top to bottom, where a vertical face of a dam body is of an I shape; the upper flange plate extends into a roadway roof; two ends of the web plate are embedded into the coal pillar dams; and the lower flange plate extends into a floor. The I-shaped water-retaining dam is located in an underground coal roadway, and bears complex surrounding rock stress. The present invention effectively overcomes water seepage of a weak part at an upper part of a conventional I-shaped water-retaining dam.
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公开(公告)号：US10935084B2
公开(公告)日：2021-03-02
申请号：US16095242
申请日：2017-12-12
申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY , XUZHOU ZHIRUN MINING EQUIPMENT SCIENCE AND TECHNOLOGY CO., LTD.
发明人： Qingrui Meng , Fan Jiang , Zuzhi Tian , Chenghao Zhao , Xin Zhang
IPC分类号： F16D25/10 , F16D25/12 , F16D43/284 , F16D43/30
摘要： A hydro-viscous speed regulating device for heavy-load start of a belt conveyor is provided. An input shaft and an output shaft are connected through a spline tube, an inner friction plate set, and an outer friction plate set. The inner and outer friction plate sets are controlled by an inner oil cylinder and an outer oil cylinder respectively. Oil inlet and oil return of the inner oil cylinder and the outer oil cylinder are controlled by an oil inlet valve core and an oil return valve core automatically. During starting process, pressure oil enters into the outer oil cylinder, and pushes the outer friction plate set to be engaged to provide torque required by the output shaft. After the starting process is completed, the revolving speed of the output shaft rises; the oil inlet valve core and the oil return valve core move outward under the effect of a centrifugal force; the pressure oil enters into the inner oil cylinder and pushes the inner friction plate set to be engaged to provide torque required by the output shaft, and at the same time, oil returns to the outer oil cylinder. That is, during starting process, the outer friction plate set provides large torque required for start, and the inner friction plate set provides small torque during normal operation. The present invention achieves automatic switching between different torque required for start and normal operation. Moreover, the present invention has a compact structure, reliable performance, and low costs, and is applicable in a wide range.
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公开(公告)号：US20210010373A1
公开(公告)日：2021-01-14
申请号：US16766712
申请日：2019-06-18
申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY , XUZHOU GOLDFLUID HYDRAULIC TECHNOLOGY DEVELOPMENT CO., LTD.
发明人： Zhongbin WANG , Xuliang LU , Chao TAN , Haifeng YAN , Lei SI , Xingang YAO
摘要： A hydraulic support monitoring a support pose in real time based on an inertia measurement unit (IMU) and a detection method thereof. In the hydraulic support, IMU sensors are separately mounted on a roof beam, a rear linkage, and a base, and an auxiliary support pose monitoring system is disposed. Each IMU sensor measures movement states of the roof beam, the rear linkage, and the base of the support in real time, and the support pose monitoring system processes the movement states to monitor a support pose of the hydraulic support in real time. Especially, it can be technically determined whether the hydraulic support is adequately lowered, moved or raised, thereby effectively reducing the labor intensity of workers and improving the working efficiency of the hydraulic support.
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