| 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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| 12/05/2012 | CN202578742U Supporting structure for dismounting fully-mechanized-mining working surface walking support |
| 12/05/2012 | CN202578741U End hydraulic bracket with rotatable top beam |
| 12/05/2012 | CN202578740U Drivage staggered type support device |
| 12/05/2012 | CN202578739U Fixed mechanism for hydraulic support side-thrusters and hydraulic support |
| 12/05/2012 | CN202578738U Bottom lifting mechanism and hydraulic bracket with bottom lifting mechanism |
| 12/05/2012 | CN202578737U Lateral wall supporting-protecting device and supporting-protecting frame including the same |
| 12/05/2012 | CN202578736U Virtual 3D (three dimensional) linkage display dispatching system on coal mine working face |
| 12/05/2012 | CN202578698U Novel thin seam coal mine downhole mining complete equipment |
| 12/05/2012 | CN102808639A Thin-shell hydraulic support |
| 12/05/2012 | CN102808638A Insertion plate for tail beam of sublevel caving coal hydraulic bracket |
| 12/05/2012 | CN102808637A Reverse four-connecting-rod filling hydraulic support with compaction function |
| 12/05/2012 | CN102121390B Telescopic tunneling immediate support device |
| 12/05/2012 | CN102116164B Temporary supporting device for roadway drifting |
| 11/29/2012 | DE102010033733B4 Vorrichtung zur Konvergenzerfassung in Strebbetrieben des untertätigen Steinkohlenbergbaus Apparatus for detecting convergence in longwall operations under the active coal industry |
| 11/28/2012 | CN202560282U Anti-wounding device of electrohydraulic control hydraulic support |
| 11/28/2012 | CN202560281U Hydraulic support dragging rigging and dragging system |
| 11/28/2012 | CN202560280U Multifunctional filling hydraulic support |
| 11/28/2012 | CN202560279U Coal planer unit end socket supporting frame with auxiliary push device |
| 11/28/2012 | CN202560278U Gangue-blocking device between steep fully mechanized mining hydraulic support manual frames |
| 11/28/2012 | CN202560262U Plug-in cone seal hand-directional valve |
| 11/28/2012 | CN202560258U 200 L/min reversing valve for colliery hydraulic support |
| 11/28/2012 | CN202560255U Inserting type hard sealing bidirectional lock |
| 11/28/2012 | CN202558578U Dedicated manually operated lifting device for support |
| 11/28/2012 | CN102803655A Shield canopy for a shield-type support |
| 11/28/2012 | CN102797496A Integrative machine for transshipping and supporting gangues in tunnel of coal mine |
| 11/28/2012 | CN102797489A Propping plate pressure graphical displaying and analyzing method based on thrusting degree of coal face |
| 11/28/2012 | CN102797488A Hydraulic support filled with bag-type clapboard |
| 11/21/2012 | CN202544889U Self-rotation type shipping frame in-place machine |
| 11/21/2012 | CN202544888U Flexible digitalized hydraulic support |
| 11/21/2012 | CN202544887U Tunnel self-moving supporting shed |
| 11/21/2012 | CN202544886U Self-moving type tunnel advance support bracket |
| 11/21/2012 | CN202544885U Hydraulic bracket pedal leveling device |
| 11/21/2012 | CN202544872U Sealing manual reversing valve with spring resetting cartridge valve pad |
| 11/21/2012 | CN202544871U Manual change valve with spring return plug-in hard seal |
| 11/21/2012 | CN102787859A Hydraulic support with protection function |
| 11/21/2012 | CN102787858A Hydraulic support for heading face |
| 11/21/2012 | CN102787857A Hydraulic support caving shield and hydraulic support |
| 11/21/2012 | CN101967975B Fully-mechanized caving mining process technology with large mining height in super-high seam (14-20m) |
| 11/14/2012 | CN202531204U Green and environment-friendly high water filling bracket |
| 11/14/2012 | CN202531203U Mechanical and blasting mining bracket |
| 11/14/2012 | CN202531202U Connected support used for thin seam coal mining working surface |
| 11/14/2012 | CN202531201U Upright post protective device of hydraulic bracket |
| 11/14/2012 | CN102777200A Hydraulic support pushing mechanism and hydraulic support |
| 11/14/2012 | CN102777199A Automatic coal carving control device with memory function for fully-mechanized carving mining face of coal mine underground and coal carving method thereof |
| 11/14/2012 | CN102777198A Chute device |
| 11/14/2012 | CN101899986B Hydraulic control one-way valve |
| 11/07/2012 | CN202520350U Sectional retractable suspension top beam tunnel fore support |
| 11/07/2012 | CN202520349U Downhole U-shaped beam support connecting frame used together with side discharging car |
| 11/07/2012 | CN202520348U Modified type suspended hydraulic support |
| 11/07/2012 | CN202520347U Combined mining hydraulic support with lengthening beam |
| 11/07/2012 | CN202520334U Reversible lock with safety valve |
| 11/07/2012 | CN102042024B Advanced support bracket for sliding top beam |
| 10/31/2012 | CN202510150U Hydraulic support for thin-seam coal mine down hole |
| 10/24/2012 | CN202500594U Double buffering type pushing non-return valve |
| 10/24/2012 | CN202500593U End support wind screen device |
| 10/24/2012 | CN202500562U Excavating, supporting and anchoring parallel operating system |
| 10/24/2012 | CN102753785A Method for determining the position or location of plant components in mining extracting plants and extracting plant |
| 10/24/2012 | CN102748056A Large-inclination blasting mining light top coal caving bracket set |
| 10/24/2012 | CN102748055A Circulation advancing type forepoling support |
| 10/24/2012 | CN102748054A Hydraulic bracket pushing mechanism and hydraulic bracket |
| 10/24/2012 | CN102748053A Top beam structure and hydraulic bracket |
| 10/24/2012 | CN102748052A Combined mining rail crossheading circulating forward type forepoling system |
| 10/24/2012 | CN102748051A Onboard temporary support machine |
| 10/24/2012 | CN102748050A Supporting and filling integrated six-column hydraulic bracket |
| 10/24/2012 | CN102748049A Mechanical operating machine in roadway |
| 10/24/2012 | CN102748041A Nitrogen safety valve for hydraulic support in coal mine fully mechanized mining |
| 10/17/2012 | CN102736929A Remote on-line upgrade method for terminal controller software of hydraulic support electrohydraulic control system |
| 10/10/2012 | CN202483625U Suspension type waste filling mechanism |
| 10/10/2012 | CN202483624U Inclusive waste filling and tamping swing beam |
| 10/10/2012 | CN202483605U Multi-adaptability spile type end head bracket |
| 10/10/2012 | CN202483604U Hydraulic support for pitched-roof roadway forepoling |
| 10/10/2012 | CN202483603U Novel light hydraulic support |
| 10/10/2012 | CN202483602U Self-moving roadway hydraulic support |
| 10/10/2012 | CN202483601U Large clearance floating whole top beam combination suspended hydraulic support |
| 10/10/2012 | CN202483600U Protecting side locking mechanism |
| 10/10/2012 | CN102720517A Advance support, advance support set and advance supporting device |
| 10/10/2012 | CN102720516A End head support frame of fully mechanized mining face |
| 10/10/2012 | CN102168572B Waste filling supporting bracket |
| 10/03/2012 | EP2504528A2 Shield canopy for a shield-type support |
| 10/03/2012 | CN202467886U Hydraulic U-shaped steel bracket supporting loader |
| 10/03/2012 | CN202467885U Auxiliary mounting device for hydraulic bracket upright post |
| 10/03/2012 | CN202467884U Four-column supporting stack type hydraulic bracket for integrated base of split top beam |
| 10/03/2012 | CN202467883U Light-duty hydraulic support for bistable reverse four-link mechanism |
| 10/03/2012 | CN202467882U End bracket with three frames of one set |
| 10/03/2012 | CN202467881U Telescopic rear outrigger beam for group of two alley forepole top beams |
| 10/03/2012 | CN202467880U Thin seam blast mining solid waste filling hydraulic support |
| 10/03/2012 | CN202467879U Antiskid structure for three-machine matching equipment in fully-mechanized coal mining face of steeply-inclined coal seam |
| 10/03/2012 | CN202467878U Medium-thick coal layer two-column-shield type large-center-distance ultrahigh working resistance hydraulic support |
| 10/03/2012 | CN202467877U Fore support for roadway provided with one group of two frames |
| 10/03/2012 | CN202467876U Light hydraulic bracket with split ceiling girders and split bases |
| 10/03/2012 | CN202467843U Comprehensive coordinated mode of fully mechanized mining face on bow pseudo-oblique running direction long wall of steeply inclined coal seam |
| 10/03/2012 | CN1550941B Control device for underground mining |
| 10/03/2012 | CN102713149A Hydraulic circuit for longwall mining |
| 10/03/2012 | CN102713148A Method for producing a face opening using automation systems |
| 10/03/2012 | CN102704978A High fully mechanized filling, mining and screening hydraulic support |
| 10/03/2012 | CN102704977A Universal-type statically indeterminate hydraulic support |
| 10/03/2012 | CN102704976A Full-mechanized filling and coal-mining hydraulic support |
| 10/03/2012 | CN102704975A Coal-dressing hydraulic bracket for caving coal working face |
| 10/03/2012 | CN102704974A Hydraulic bracket and method for drawing, filling and mining at high position |
| 10/03/2012 | CN102704973A High-grade conventional mining chute pushing device |