| 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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| 01/05/2011 | DE19982183B4 Maschinensteuerung Machine control |
| 01/05/2011 | CN201696072U Mining intrinsically safe electronic-hydraulic-control backwashing filter |
| 01/05/2011 | CN201696071U Hydraulic support with hard connecting device for preventing conveyor from sliding down |
| 01/05/2011 | CN201696041U Double-platform four-arm drilling, loading, conveying and anchoring integrated machine for coal roadways |
| 01/05/2011 | CN101936176A Hydraulic bracket assembling machine |
| 01/05/2011 | CN101936164A Very soft thick coal seam forepoling hold top coal caving mining method and hydraulic support structure |
| 01/05/2011 | CN101514633B Non-roadside supporting gob-side entry retaining process |
| 12/29/2010 | CN201687503U Cantilever support mounting frame |
| 12/29/2010 | CN201687502U Push framework hinge structure used for hydraulic support base |
| 12/29/2010 | CN201687501U Balance structure for an integrated hydraulic bracket of a plaster filling support |
| 12/29/2010 | CN201687500U Front frame of filling and supporting integration hydraulic support for paste body |
| 12/29/2010 | CN201687499U Rear frame of paste filing and supporting integrative hydraulic support |
| 12/29/2010 | CN201687498U Tail end gangue discharge structure for paste filled and supported integrated hydraulic holder |
| 12/29/2010 | CN201687497U Quick wire mesh laying device for shield supports in last cutting stope of fully mechanized mining face |
| 12/29/2010 | CN201687496U Four-column straight-guidebar wall retaining type filling hydraulic bracket |
| 12/29/2010 | CN201687491U Tail end paste filling structure of integrated hydraulic support supported and filled by paste |
| 12/29/2010 | CN101929348A Coal removal device of crawler walking hydraulic support |
| 12/29/2010 | CN101929173A Repairer for broken loading roadway |
| 12/23/2010 | WO2010125500A3 Pressure relief valve |
| 12/23/2010 | US20100320827 Method for the Controlled Maintaining of a Distance Between the Top Canopy and the Coal Face in Longwall Mining Operations |
| 12/22/2010 | CN101498224B Fully-mechanized mining working surface hydraulic support transport vehicle |
| 12/22/2010 | CN101205811B Hydraulic bracket electrohydraulic control system as well as valve control device and control method thereof |
| 12/16/2010 | WO2010075947A9 Method for adjusting an automatic level control of the plane in planing operations in hard coal mining |
| 12/15/2010 | CN201671650U Extremely-thin seam mining hydraulic support |
| 12/15/2010 | CN201671649U 液压支架 Hydraulic support |
| 12/15/2010 | CN201671648U Bracket special for safety exit of coal face |
| 12/15/2010 | CN201671647U Horizontal reverse four-bar fore support with high inclination angle working surface |
| 12/08/2010 | CN101907887A Mineral hydraulic bracket controller, bracket control system and communication method |
| 12/08/2010 | CN101907107A Oil tank of caterpillar track travelling hydraulic support |
| 12/08/2010 | CN101906985A Method for remotely monitoring and controlling hydraulic support on underground working surface |
| 12/08/2010 | CN101906984A Landing beam sliding hydraulic support system for coal mine |
| 12/08/2010 | CN101906983A Tilting prevention device for fully mechanized mining hydraulic support |
| 12/08/2010 | CN101906982A Two-stage side guard transition bracket for large height mining face |
| 12/08/2010 | CN101457652B Overlarge mining height hydraulic support |
| 12/08/2010 | CN101148990B Down-hole tunnel suspended stepping self-moving advance timbering |
| 12/08/2010 | CN101070761B Digging-protecting integrated digging-protecting machine |
| 12/01/2010 | CN201661310U Waste rock roadside filling extruded formwork |
| 12/01/2010 | CN201661308U Basic stand of filling support |
| 12/01/2010 | CN201661307U Filling supporting barrier bracket |
| 12/01/2010 | CN201661306U Hydraulic support frame |
| 12/01/2010 | CN101899986A Hydraulic control one-way valve |
| 12/01/2010 | CN101519973B Hydraulic bracket with interconnected top and bottom |
| 11/24/2010 | CN201650360U Rear tail boom subsidiary pushing device |
| 11/24/2010 | CN201650334U Hydraulic support electro-hydraulic control system |
| 11/24/2010 | CN201650333U Auxiliary support device and hydraulic support |
| 11/24/2010 | CN201650332U Hydraulic supporting device for fully-mechanized coal winning working face |
| 11/24/2010 | CN201650331U Onboard temporary supporting device |
| 11/24/2010 | CN201650330U Special advanced supporting support set for conveyor gateway on fully-mechanized coal mining faces |
| 11/24/2010 | CN201650329U Cross-connecting structure |
| 11/24/2010 | CN201650328U Self-advancing advance timbering hydraulic support in roadway |
| 11/24/2010 | CN201650327U Guide rod type fore support for high inclination angle working surface |
| 11/24/2010 | CN201650326U Goaf dam type filling hydraulic support frame |
| 11/24/2010 | CN201650325U Mined out region bag type filling hydraulic rack |
| 11/24/2010 | CN201650324U Hydraulic rack with auxiliary push unit |
| 11/24/2010 | CN101892856A Special hydraulic support for underground filling coal mining of coal mine |
| 11/24/2010 | CN101289939B Integrated suspension device for retaining a lane for next sublevel |
| 11/17/2010 | CN201635755U Leak-proof waste rock structure of hydraulic bracket |
| 11/17/2010 | CN201635747U Advancing jack trunnion positioning device |
| 11/17/2010 | CN201635656U Side-propping anchor rod-anchor cable construction drill carriage with three movable arms |
| 11/17/2010 | CN201635655U Side-propping anchor rod-anchor cable construction drill carriage with two movable arms |
| 11/17/2010 | CN101886547A Two-pier shielding type large mining height lapping hydraulic bracket |
| 11/10/2010 | EP2247826A1 Method for the controlled maintaining of a distance between the roof and the face in longwall mining operations |
| 11/10/2010 | EP2247825A1 Method for automatically creating a defined face opening in plow operations in coal mining |
| 11/10/2010 | EP2247824A1 Method for automatically creating a defined face opening in longwall coal mining operations |
| 11/10/2010 | EP2247823A1 Method for controlling longwall mining operations |
| 11/10/2010 | CN201627597U Flexible hydraulic shield support for coal mine |
| 11/10/2010 | CN201627596U Transverse self-advancing combined suspension hydraulic support |
| 11/04/2010 | US20100276981 Shield control device for carrying out the longwall function of a longwall unit in the longwall face working in a mine |
| 11/03/2010 | CN201620903U Combined coal mining support frame transportation tensioning device |
| 11/03/2010 | CN101876248A Method and apparatus for maintaining longwall face alignment |
| 10/27/2010 | EP2242900A1 Method for controlling longwall mining operations by identifying boundary layers |
| 10/27/2010 | CN101871355A Four post support shield type large mining height mesh-placement hydraulic support |
| 10/27/2010 | CN101871354A Large-step continuous supporting type forepole and forepole moving method thereof |
| 10/27/2010 | CN101519972B One-way sequence valve and bracket hydraulic sequence control system using same |
| 10/27/2010 | CN101429867B Major cycle slanting extraction method for coal mining work surface |
| 10/27/2010 | CN101344007B Hydraulic system for supplying work medium with different filter fineness to different elements of hydraulic support |
| 10/21/2010 | US20100266349 Impact Resistant Lagging, Method For Designing Impact Resistant Lagging, and Apparatus for Testing Impact Resistant Lagging |
| 10/20/2010 | CN101864977A Control system of coal mine underground hydraulic support frame reversing mechanism |
| 10/20/2010 | CN101864976A Airborne hydraulic multifunctional temporary support machine |
| 10/20/2010 | CN101864975A Rear frame-to-front frame type continuous supporting advanced frame and frame moving method thereof |
| 10/13/2010 | CN201606099U 组合式悬移支架 Modular Suspended support |
| 10/13/2010 | CN201606098U 一种充填支护基本支架 One kind of filling supporting basic scaffold |
| 10/13/2010 | CN201606097U 矸石充填支护支架 Supporting bracket waste filling |
| 10/13/2010 | CN201606096U 用于液压支架顶梁的防矸结构 Anti parting structure for the top beam of the hydraulic support |
| 10/13/2010 | CN201606075U 一种掘护机械 One kind of digging machinery protection |
| 10/13/2010 | CN101858216A Method for recovering stagnant coal pillars left by breast type coal mining method |
| 10/13/2010 | CN101858213A Drilling, loading, transporting and anchoring integrated machine with dual platforms and four arms for coal roadway |
| 10/12/2010 | US7810424 Device for increasing pressure in cylinders with control unit |
| 10/06/2010 | CN101852085A Bracket special for safety exit of coal face |
| 10/06/2010 | CN101852084A Forepoling with large inclination working surface and four transverse connecting rods |
| 10/06/2010 | CN101852083A Quick supporting method for large-deformation roadway easy to fall, break and loosen and apparatus thereof |
| 09/29/2010 | CN201593438U Lateral protective plate hydraulic control system of hydraulic support |
| 09/29/2010 | CN201593437U Connecting device of pushing rod of hydraulic support |
| 09/29/2010 | CN201593436U File leader bracket of fully mechanized working surface |
| 09/29/2010 | CN201593435U Safety protection device of coal mining support |
| 09/22/2010 | EP2229505A1 An apparatus for forming an underground tunnel |
| 09/22/2010 | CN201588648U Joist device of coal loader |
| 09/22/2010 | CN201588647U Horizontal type end head support with safeguard structure for inclined top alley way |
| 09/22/2010 | CN201588646U Top caving coal bracket for tunnel end of full-mechanized caving face of coal mine |
| 09/22/2010 | CN201588645U High-end hydraulic support suitable for small drift |