Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21F - Safety devices, transport, filling-up, rescue, ventilation, or drainage in or of mines or tunnels › E21F 17 - Methods or devices for use in mines or tunnels, not covered elsewhere
Patents for E21F 17 - Methods or devices for use in mines or tunnels, not covered elsewhere (4,758)
04/2014
04/09/2014CN103711520A Underground local ventilator power supply system
04/09/2014CN102392687B Vehicle-mounted, ground and mine beam tube emergency rescue command system and usage thereof
04/08/2014CA2594529C Method to increase storage capacity of natural gas storage caverns with a refrigeration system
04/02/2014CN203515660U Underground coal mine remote monitoring system based on ZigBee technology
04/02/2014CN203515659U Coal mine underground moving target positioning instrument
04/02/2014CN203515658U Automatic closed remote-control fire protection device for coal mining area
04/02/2014CN203515651U Mine escape information booting system
04/02/2014CN103696808A Location system and method for underground mine workers
04/02/2014CN103696807A Centralized and distributed wireless sensor network environment monitoring and control system for coal mine emergency shelters
04/02/2014CN103696806A Gas tunnel control method and system thereof
04/02/2014CN103696805A Method for conveying and installing down-hole beam tubes
04/02/2014CN103692446A Moving and flying multi-robot system used for gallery detection and search-and-rescue
04/02/2014CN102644482B Rock burst predicting and warning method
04/02/2014CN102536295B Intelligent local ventilation system
03/2014
03/26/2014CN203499727U Gas detecting and warning device
03/26/2014CN203499726U Drilling stress sensor circuit board
03/26/2014CN203499725U Filling slurry stope height accurate indicator
03/26/2014CN203499724U Improved bracket for coal mine air-water pipelines
03/26/2014CN103687092A Mining flameproof and intrinsic safety type integrated substation
03/26/2014CN103684642A Communication system of cable tunnel patrol inspection robot
03/26/2014CN103676861A Underground coal mine hydraulic anti-reflection operation remote monitoring and control system
03/26/2014CN103670516A Identification method for rockburst disaster micro-seismic monitoring and early-warning key points
03/26/2014CN103670515A Underground coal mine air-door fault early warning system
03/26/2014CN103670514A Coal mine safety monitoring and controlling system
03/26/2014CN103670513A Positioning system for mine cars in mine
03/26/2014CN103670512A Underwater continuous automatic dredging system of underground oversized water sump of mine
03/26/2014CN103670511A Roof strata fracture degree analysis and calculation method
03/26/2014CN103670474A Thin coal seam hydraulic support system with alignment device
03/26/2014CN103670473A Anchor bolt fastening force status indication washer
03/26/2014CN103670371A Mining explosion-proof detecting device
03/26/2014CN102665072B Intrinsically safe helmet type miner lamp pickup and monitoring system for mining
03/19/2014CN203492143U A coal mine belt inspection tour apparatus
03/19/2014CN203488215U Underground emergency acousto-optic warning system
03/19/2014CN203488214U Mine level gauge monitoring system
03/19/2014CN203488213U Novel smoke transducer for mine
03/19/2014CN203488212U Mining general type monitoring substation
03/19/2014CN203488211U System capable of guiding mobile people and devices to avoid disaster
03/19/2014CN203488210U Novel inclined air shaft explosion door
03/19/2014CN203488209U Mounting structure of protective isolation door for tunnel
03/19/2014CN103648077A Zigbee-based coal mine underground personnel positioning and information transmission system
03/19/2014CN103643997A Method for computing gas emission quantity of low-wind-speed coal tunneling face
03/19/2014CN103643996A Graphic method based driving work face gas outburst prediction method
03/19/2014CN103643995A Protective airtight partition door for subway district
03/19/2014CN103643994A Method for controlling water inrush and sand inrush under coal mine
03/19/2014CN103643990A Air treatment system of underground coal mine
03/19/2014CN102705013B System and method for real-time monitoring of folding type earthwork transport machine
03/19/2014CN102434210B Method and system for monitoring underground engineering portrait information and monitoring information safely
03/19/2014CN102338792B Remote detection system for coal mine disaster area environment
03/19/2014CN102080569B Distributed optical fiber temperature measurement-based fire early warning method for belt conveyor
03/19/2014CN101915115B Protective device for mine drilling construction
03/12/2014CN203476397U Underground coal self-ignition prediction integrated alarm device based on internet of things
03/12/2014CN203476396U Potential safety hazard preventing and controlling system for gas extraction
03/12/2014CN203476395U Warning device of coupling of tubular column
03/12/2014CN203476376U Underground coal mine local ventilator wind direction adjusting device
03/12/2014CN103628922A Intelligent gas transmission pipeline monitoring system and monitoring method
03/12/2014CN103628921A Monitoring and controlling system for conveying safety of low-concentration gas
03/12/2014CN103628920A Early-warning and prediction method for sedimentation nearby tunnel construction working face
03/12/2014CN103628919A Large slide-rail-type perpendicular plugging device
03/12/2014CN103628918A Construction method of road tunnel lighting engineering
03/12/2014CN103628917A Upper corner gas blocking device of coal mining working face
03/12/2014CN103622188A Intelligent waist belt applicable to operators in underground tunnel
03/12/2014CN102562155B Automatic isolating door for poison gas generated after gas explosion of mine
03/12/2014CN102536310B Emergent danger avoiding system under shaft of coal mine
03/05/2014CN203466977U Coal mine staff life security management system based on RFID and ZigBee wireless sensor network
03/05/2014CN203463153U Mine danger reminding device
03/05/2014CN203463152U Ground pressure detection device for non-coal mines
03/05/2014CN203463151U Novel power-off monitor used for coal mine
03/05/2014CN203463150U Automatic power-off protective device for mine raking machine
03/05/2014CN203463149U Intelligent flame-retardant corrosion-resistant inorganic-fiber mining door system
03/05/2014CN203463148U Air type locking double-leaf ventilation door
03/05/2014CN203463147U Laneway plugging airbag
03/05/2014CN203463146U Flame-retardant and heat-insulation apparatus for laneway
03/05/2014CN203463145U Explosive-proof water tank suspension device
03/05/2014CN103619063A Coal mine personnel positioning terminal based on CSS technology and ZigBee technology
03/05/2014CN103616491A Gas and dust mixed explosion simulation testing device
03/05/2014CN103615290A Mining safety monitoring and control substation for voice intercom and online intrinsic safety power supply monitoring
03/05/2014CN103615289A Mine gas bundle pipeline monitoring system
03/05/2014CN103615288A Single-open type metro section protection sealing partition door device
03/05/2014CN103615287A Busbar sealing device in metro section protection sealing partition door
03/05/2014CN103615286A Working face roof-cutting depressurizing method
03/05/2014CN103615232A Data monitoring system and method based on drilling parameter instrument
03/05/2014CN103615178A Metro inter-zone protection closed partition door device
02/2014
02/26/2014CN203457379U Gas alarm miner's lamp with camera
02/26/2014CN203457246U Downwell visible monitoring system based on machine vision
02/26/2014CN203452853U Three-dimensional electromagnetic radiation induction detection device for outburst monitoring of coal and methane gas
02/26/2014CN203452852U Mine dynamic disaster integrated early warning device
02/26/2014CN203452851U Underground micro-vibration signal collector for metal mine
02/26/2014CN203452850U Alarm system based on gas monitoring
02/26/2014CN203452849U Mine explosive-proof and intrinsic safety communication acoustic-optical signaling device
02/26/2014CN203452848U Bolt pipeline hook for tunnel
02/26/2014CN203452847U Pendant pipeline hook for channel
02/26/2014CN203452846U Disc-shaped gasket for installing tunnel hook
02/26/2014CN203452839U Automatic dustproof water curtain device for adhesive tape transportation roadway
02/26/2014CN203452827U Electric cable tunnel heat radiation structure
02/26/2014CN203451147U Anti-collision early warning device of inclinometry winch
02/26/2014CN103607792A Mining comprehensive service communication management system
02/26/2014CN103604914A Coal-mine gas movement detection data processing method of mine Internet of Things
02/26/2014CN103603691A Mine ventilation dynamic resolving and analysis early warning method and system
02/26/2014CN103603690A Method for roof separation detecting and accident prewarning through geological radar
02/26/2014CN103603669A Unfavorable geology forecasting device for shield tunnel and tunnel construction method
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