| Patents for E21D 23 - Mine roof supports for step-by-step movement, e.g. in combination with provisions for shifting of conveyers, mining machines, or guides therefor (3,544) |
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| 02/06/2013 | CN102913265A Circularly self-moving forepoling hydraulic support |
| 02/06/2013 | CN102242638B Back pulley fixing device of scraper loader |
| 01/30/2013 | DE202013100048U1 Hydraulischer Schildausbau Hydraulic roof supports |
| 01/30/2013 | CN202707114U Visible support control system and coal extraction support with the same |
| 01/30/2013 | CN202707113U Tail adjustment device for lower end of large inclination bracket |
| 01/30/2013 | CN202707112U Connecting structure for hydraulic bracket displacement frame and connector |
| 01/30/2013 | CN202707111U Bottom raising device of hydraulic support |
| 01/30/2013 | CN202707110U Crossheading front support carrier |
| 01/30/2013 | CN202707109U Bottom lifting device of hydraulic support in ultrathin coal seam |
| 01/30/2013 | CN202707108U Hydraulic support alignment device |
| 01/30/2013 | CN202707107U Handlebar zero adjuster of hydraulic support |
| 01/30/2013 | CN202707106U Combined mining hydraulic support plunger coating protective sleeve |
| 01/30/2013 | CN202707105U Top beam structure and hydraulic support |
| 01/30/2013 | CN202707104U Retaining wall support |
| 01/30/2013 | CN202707103U Hydraulic support with foldable rear tail beam for extraction of thin coal bed |
| 01/30/2013 | CN202707102U Supporting-type hydraulic support |
| 01/30/2013 | CN202707101U Combined hydraulic rack with guiding mechanism |
| 01/30/2013 | CN202707100U Coal retaining device for blasting mining face of thin coal bed |
| 01/30/2013 | CN202707099U Roadway mechanized operation machine |
| 01/30/2013 | CN102900450A Caving coal hydraulic support with large swing beam structure |
| 01/24/2013 | WO2013010206A1 Coal caving cycle |
| 01/23/2013 | CN202690102U Folding hanging and moving hydraulic support equipment |
| 01/23/2013 | CN202690101U Hydraulic support thrust gear and hydraulic support |
| 01/23/2013 | CN202690100U Diamond-shaped hydraulic support for pitching oblique mining working face in steeply inclined seams |
| 01/23/2013 | CN202690099U Novel ended support for fully mechanized caving face |
| 01/23/2013 | CN202690098U Hexastyle supporting type split combination ended hydraulic support |
| 01/23/2013 | CN202690097U Advance support device of comprehensive mechanization stone drift heading machine group |
| 01/23/2013 | CN202690044U Comprehensive mechanized rock roadway tunneling unit |
| 01/23/2013 | CN102889090A Rigidity adjustable waste rock stopping device for large-tilt-angle working face support |
| 01/16/2013 | CN202673318U Underground hydraulic support device for coal mine |
| 01/16/2013 | CN202673317U Onboard temporary support machine |
| 01/16/2013 | CN202673316U Step-shaped tunnel self-moving supporting shed |
| 01/16/2013 | CN202673315U Three-beam support device |
| 01/16/2013 | CN202673314U End support of fully-mechanized coal mining face |
| 01/16/2013 | CN202673313U Coal caving mechanism for suspension movable support |
| 01/16/2013 | CN202673312U Round-link chain double ear chain annular clamp for sublevel caving coal hydraulic support |
| 01/16/2013 | CN102877877A Up-mounted advancing mechanism and thin coal seam hydraulic support |
| 01/16/2013 | CN102877876A Dynamic cycling hydraulic system for advancing mechanism and dynamic cyclic loading method for dynamic cycling hydraulic system |
| 01/16/2013 | CN102877875A Thin coal seam support bottom raising mechanism and thin coal seam support |
| 01/16/2013 | CN102877874A Bottom adjusting mechanism for fully mechanized coal mining face hydraulic bracket |
| 01/16/2013 | CN102877873A Hydraulic support assembly device and hydraulic support assembly system |
| 01/16/2013 | CN102877872A Heavy large-mining-height full-protection large-dip-angle long-wall fully mechanized caving face automatic control supporting equipment |
| 01/16/2013 | CN102877840A Coal mining equipment |
| 01/09/2013 | EP2542760A2 Method for locating persons and/or mobile machines in mine caverns using rfid technology, and longwall face extraction installation for carrying out the method |
| 01/09/2013 | CN202659269U Mine conveyor hoisting device |
| 01/09/2013 | CN202659268U Oil cylinder and component arrangement frame thereof |
| 01/09/2013 | CN202659267U Integral graded spanning-type walking bracket |
| 01/09/2013 | CN202659266U Controller for working face support |
| 01/09/2013 | CN202659257U Single-control spray water valve for coal mine hydraulic support |
| 01/09/2013 | CN102865091A Hydraulic support remote control method and system |
| 01/09/2013 | CN102865090A Track traveling forepoling support with side shifter |
| 01/09/2013 | CN102865089A Full-hydraulic self-moving type advancing temporary support and using method thereof |
| 01/02/2013 | CN202645610U Hydraulic support and engineering machinery |
| 01/02/2013 | CN202645609U Dual-stabilizer-bar light type hydraulic bracket |
| 01/02/2013 | CN202645608U Column beam connecting device |
| 01/02/2013 | CN202645607U Fully mechanized coal mining face end self-moved support |
| 01/02/2013 | CN202645606U Cantilever type heading machine vehicle-mounted matched supporting and anchoring system |
| 01/02/2013 | CN202645605U Filling coal mining direct feed type buffer gangue stop device |
| 01/02/2013 | CN102852542A Automatic control system and automatic control method used for protecting face guard of coal mine underground fully mechanized coal face support |
| 01/02/2013 | CN102852541A Bottom lifting device for bracket |
| 01/02/2013 | CN102852540A Protector |
| 12/26/2012 | EP2536918A2 Method for determining the position of plant components in mining extracting plants |
| 12/26/2012 | CN202628177U Gangue-coal ash two-column shield-type hydraulic filling support |
| 12/26/2012 | CN202628153U Crawler type hydraulic bracket withdrawing machine |
| 12/26/2012 | CN202628152U Lower end hydraulic support for high-inclination-angle and high-dipping fully mechanized mining surface |
| 12/26/2012 | CN202628151U Follow-up end support |
| 12/26/2012 | CN202628150U Self-moving type follow-up end bracket |
| 12/26/2012 | CN202628149U Filling hydraulic support |
| 12/26/2012 | CN202628148U Scalable hydraulic support during simulation |
| 12/26/2012 | CN202628147U Six-column type filling hydraulic support |
| 12/26/2012 | CN202628146U High-grade conventional mining pusher |
| 12/26/2012 | CN202628145U Hydraulic support for gentle dip thick coal seam mining |
| 12/26/2012 | CN202628144U Hydraulic support for inclination angle coal bed |
| 12/26/2012 | CN202628143U Four-column suspension swinging beam type gangue filling hydraulic bracket |
| 12/26/2012 | CN202628142U Excavation laneway hydraulic walking type multistage temporary supporting equipment |
| 12/26/2012 | CN102839985A Fore-poling equipment of underground driving working face of coal mine |
| 12/26/2012 | CN101852084B Forepoling with large inclination working surface and four transverse connecting rods |
| 12/20/2012 | US20120319453 Method for determining the position or location of plant components in mining extracting plants and extracting plant |
| 12/20/2012 | US20120319452 Apparatus and method for mining coal |
| 12/19/2012 | CN202611736U Foot lifting device for thin coal seam hydraulic support |
| 12/19/2012 | CN202611735U Connecting rod bottom lifting device for thin seam support |
| 12/19/2012 | CN202611734U Crow plate type bottom lifting mechanism |
| 12/19/2012 | CN202611733U Automatic pressurizing device used for support |
| 12/19/2012 | CN202611732U Trapezoid-shaped slideway guiding device of telescoping beam of mine hydraulic support |
| 12/19/2012 | CN202611731U Safety protection device for downhole operation |
| 12/19/2012 | CN202611726U Hydraulic support locating machine turntable mechanism |
| 12/19/2012 | CN202611695U Novel rectangular coal roadway quick driving and bolting all-in-one machine |
| 12/19/2012 | CN102828764A ZDL powerful topping thin seam bracket |
| 12/19/2012 | CN102828763A Hydraulic support automatic control system with memory function on fully mechanized coal face |
| 12/19/2012 | CN102828762A Backstop gangue beam suspension swinging beam type gangue filing hydraulic support frame with side protection plate |
| 12/12/2012 | CN202596764U Thin-coal-seam hydraulic bracket bottom-lifting device |
| 12/12/2012 | CN202596763U Fully-mechanized hydraulic support for steep coal face crossing fault |
| 12/12/2012 | CN202596762U Baffle-type filling hydraulic bracket |
| 12/12/2012 | CN102817626A Hydraulic support roping rigging and roping system |
| 12/12/2012 | CN102817610A Tunneling, anchoring and supporting integrated machine |
| 12/12/2012 | CN102128041B Bottom uplifting device for hydraulic support and hydraulic support |
| 12/12/2012 | CN102128040B Hydraulic striding-type advanced-support equipment |
| 12/06/2012 | WO2012162720A1 Coal saver |
| 12/05/2012 | CN202580407U Hose assembly for coal mining hydraulic support |
| 12/05/2012 | CN202578743U Electro-hydraulic control system of full-automatic hydraulic support |