| 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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| 05/30/2012 | CN202250131U Intermediate rail of circulating and automatic-moving hydraulic support for advanced supporting |
| 05/30/2012 | CN202250130U Waste rock blocking device |
| 05/30/2012 | CN202250129U Hydraulic bracket with special stretchable waste rock stopping screen |
| 05/30/2012 | CN202250115U Cartridge type hard-seal bidirectional lock |
| 05/30/2012 | CN102482941A 用于在辊子采煤机中通过辊子的倾斜支撑的雷达导航自动化地制造限定的工作面开口的方法 Methods roller Shearer in automated manufacturing defined by rollers radar navigation Face inclined support for opening |
| 05/30/2012 | CN101824986B Coal mining process of drilling, loading, conveying and anchoring integral machine |
| 05/30/2012 | CN101182777B Valve cell |
| 05/23/2012 | CN202228099U End socket hydraulic support with upper beam capable of rotating and roll steering in side direction |
| 05/23/2012 | CN202228098U Combined hydraulic support with coal loading/unloading and self-moving functions |
| 05/23/2012 | CN102472104A 迈步装置和具有迈步装置的有动力的掩护支架 Moving device and move the device has motivated Shield Support |
| 05/23/2012 | CN102465707A 大倾角液压支架 Large angle hydraulic support |
| 05/23/2012 | CN101858216B Method for recovering stagnant coal pillars left by breast type coal mining method |
| 05/23/2012 | CN101852085B Bracket special for safety exit of coal face |
| 05/16/2012 | EP2452047A2 Gob shield for shield support and method for the production thereof |
| 05/16/2012 | EP2315916B1 Shield cap for a shield-type mining support |
| 05/16/2012 | CN202220614U Integrated self-shift hydraulic support for placing top coal in steeply inclined roadway |
| 05/16/2012 | CN102454410A Timbering equipment for coal mines |
| 05/09/2012 | CN202215292U Double-guiding waste rock filling mechanism for hydraulic support |
| 05/09/2012 | CN202215273U Front-arranged single oscillating bar type end hydraulic support |
| 05/09/2012 | CN202215272U Support beam assembly used for circulating self-moving forepoling hydraulic support |
| 05/09/2012 | CN202215271U Front-end track used for circulating self-moving forepoling hydraulic support |
| 05/09/2012 | CN202215270U Circulating self-moving forepoling hydraulic support |
| 05/09/2012 | CN202215269U Anti-settling device of slipping top beam hydraulic support |
| 05/09/2012 | CN102444416A Fully mechanized mining face hydraulic support beam-type retracting device |
| 05/09/2012 | CN102444415A Tip bracket for solid filling |
| 05/03/2012 | US20120104829 Hydraulic Circuit For Longwall Mining |
| 05/02/2012 | EP2446207A2 Method for determining the position of installation components in mining installations |
| 05/02/2012 | CN102439261A Method for determining the position or situation of installation components in mineral mining installations and mining installation |
| 05/02/2012 | CN102434182A Filling hydraulic bracket with automatic bag overturning mechanism |
| 05/02/2012 | CN102434181A Data conversion module |
| 05/02/2012 | CN101906984B Landing beam sliding hydraulic support system for coal mine |
| 04/26/2012 | WO2011004296A3 Gob shield for shield support and method for the production thereof |
| 04/25/2012 | CN202202883U 井下支架装卸装置 Underground bracket handling device |
| 04/25/2012 | CN202202882U 液压支架控制器 Hydraulic support controller |
| 04/25/2012 | CN202202881U 用于架后充填的液压支架 After filling for aircraft hydraulic support |
| 04/25/2012 | CN102428253A 泄压阀 Pressure relief valve |
| 04/25/2012 | CN102425440A 液压支架及其升降装置 Hydraulic supports and lifting devices |
| 04/25/2012 | CN101818648B 矸石充填巷旁挤压成型模板 Lane beside waste filling extruded template |
| 04/19/2012 | WO2011006461A3 Hydraulic circuit for longwall mining |
| 04/19/2012 | US20120091782 Method for determining the position or situation of installation components in mineral mining installations and mining installation |
| 04/18/2012 | CN202194677U 一种液压支架抬底装置及液压支架 A hydraulic lift bottom bracket unit and hydraulic support |
| 04/18/2012 | CN202194676U In-support protection device for hydraulic support |
| 04/18/2012 | CN102418543A Wired man-machine interface device for support controller |
| 04/18/2012 | CN102418542A 一种用于液压支架的支架控制装置 A hydraulic control unit bracket bracket |
| 04/18/2012 | CN102418541A 一种刨煤机液压支架自动移架方法、装置及系统 One kind Plow hydraulic support automatic sliding frame method, apparatus and system |
| 04/11/2012 | CN202187786U Rail component for circulatory automatic moving of advanced support hydraulic support |
| 04/11/2012 | CN202187785U 悬吊式巷道掘进临时支护装置 Suspended roadway excavation temporary support device |
| 04/11/2012 | CN102410035A 用于综采工作面的超前支护履带式液压支架 Mechanized mining face advance support for retaining crawler hydraulic support |
| 04/11/2012 | CN102410034A 一种连接装置 A connection device |
| 04/04/2012 | CN202181910U 双顶梁同轴铰接四连杆采充一体化液压支架 Double top hinged four-link beam coaxial hydraulic support integrated mining charge |
| 04/04/2012 | CN102400700A 移动式机械密封充填开采支架 Mobile mechanical seal backfill mining bracket |
| 04/04/2012 | CN101839134B 一种房式采煤法遗留的不规则呆滞煤柱回收方法 Irregular sluggish recovery method of coal pillar mining method left room type |
| 03/28/2012 | CN202176353U Two-stage stretching tamping mechanism for gangue filling hydraulic support |
| 03/28/2012 | CN202176352U Pusher dog subassembly for advance support hydraulic bracket capable of circularly and automatically moving |
| 03/28/2012 | CN202176351U Lifting hook assembly for circulatory self-moving advance timbering hydraulic support |
| 03/28/2012 | CN102392669A Economical and practical electro-hydraulic control system for hydraulic supports |
| 03/28/2012 | CN102392668A Electronic control system for coal extraction |
| 03/28/2012 | CN102392667A Fast installation method of ten-million-ton scale fully mechanized caving face equipment |
| 03/28/2012 | CN102392666A Protective profile |
| 03/28/2012 | CN102392665A Bracket remote-control device for protecting safety of operating personnel |
| 03/28/2012 | CN102392664A Hydraulic support with inclination sensors and height measurement method thereof |
| 03/28/2012 | CN102392663A Forward supporting hydraulic support and forward supporting hydraulic support system |
| 03/28/2012 | CN102392640A Close-range thin coal layer simultaneous mining and parallel transporting method |
| 03/28/2012 | CN101526004B Large inclination-angle low-position top coal hydraulic bracket |
| 03/21/2012 | CN202170801U 一种液压支架及其伸缩梁装置、综采工作面 A hydraulic bracket and telescoping beam device, mechanized mining face |
| 03/21/2012 | CN102383857A Gob-side entry retaining process for solid-filling, coal-mining and laying gangue wall |
| 03/21/2012 | CN102383819A Economical and practical controller for hydraulic support |
| 03/21/2012 | CN102383818A Folding type suspended mobile hydraulic support equipment |
| 03/21/2012 | CN102383817A Hydraulic bracket for top coal discharging in low position |
| 03/21/2012 | CN102383816A Hydraulic support, connection mechanism of push rod of hydraulic support and connector, and fully-mechanized mining surface |
| 03/21/2012 | CN102383815A Suspension type driftage temporary supporting device and use method thereof |
| 03/21/2012 | CN102383814A Dual-purpose powerful waste edge support for mechanical mining and blasting mining |
| 03/21/2012 | CN102383794A Cross side dumping arrangement coordinated mode of rear conveyer of fully mechanized working face and support structure |
| 03/14/2012 | CN202165102U 一种抬底机构 One kind of bottom lift mechanism |
| 03/14/2012 | CN102373940A Hydraulic support controller |
| 03/14/2012 | CN102373939A Light hydraulic bracket for shortwall face |
| 03/14/2012 | CN102373938A Electromagnetic valve driver |
| 03/14/2012 | CN102373937A Rhombic hydraulic support for pseudo-inclined down mining working surface of steep coal seam |
| 03/14/2012 | CN102373936A Hydraulic telescopic bracket for downhole coal mine and downhole coal mining method using same |
| 03/14/2012 | CN101956562B Self-advancing gate road advance support bracket |
| 03/07/2012 | EP2425097A2 Pressure relief valve |
| 03/07/2012 | CN202157816U Differential pressure cushion valve |
| 03/07/2012 | CN202157815U 岩巷炮掘网式柔性挡矸墙 Blasting rock roadway intensive flexible retaining wall gangue |
| 03/07/2012 | CN102367738A Hydraulic support control device |
| 03/07/2012 | CN102367737A Advance beam shed raising device for mechanical excavation roadway |
| 03/01/2012 | DE102011101087A1 Steuereinrichtung einer Ausbaueinheit im Streb eines Bergwerks Controller of the expansion unit at the face of a mine |
| 02/29/2012 | CN102364060A Split hydraulic support controller |
| 02/29/2012 | CN102364059A Wired human-machine interface device of hydraulic support controller |
| 02/29/2012 | CN102364058A Economical practical hydraulic support controller shell |
| 02/29/2012 | CN102364057A Mine hydraulic support electromagnetic pilot valve driver |
| 02/29/2012 | CN102364056A Human-machine interface information exchange device of hydraulic support controller |
| 02/29/2012 | CN102364055A Split hydraulic support controller shell |
| 02/22/2012 | CN202148911U 矿用隔爆兼本安变频恒压智能乳化液泵站 Constant Smart emulsion pump mine explosion-proof and intrinsically safe frequency |
| 02/22/2012 | CN102359545A Double-lug connection piece |
| 02/15/2012 | CN102352763A Working face hydraulic support control device with wireless communication function |
| 02/15/2012 | CN102352762A Low-position coal-caving hydraulic bracket |
| 02/15/2012 | CN102352756A Door arc steel frame reinforcing system |
| 02/09/2012 | US20120034037 Curved Mine Roof and Rib Support |
| 02/08/2012 | CN202140106U 薄煤层自移式联合支架 Since portable thin seam joint bracket |
| 02/08/2012 | CN202140105U 一种组合滑移顶梁液压支架 A sliding roof beams hydraulic bracket assembly |