Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21D - Shafts; Tunnels; Galleries; Large underground chambers › 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
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)
09/2010
09/22/2010CN201588644U Automatic leveling device of oblique and steep forward debris shields
09/22/2010CN101839134A Method for recovering irregular stagnant coal pillars left by room coal mining method
09/16/2010DE202009004753U1 Druckbegrenzungsventil Pressure relief valve
09/16/2010DE102009012570A1 Method for securing long-roadway building element in underground mine, involves reinforcing and/or stabilizing roof in transition area in front of roof support with back-filling building material by support system
09/15/2010CN201583264U Hydraulic bracket and detecting device for support height thereof
09/15/2010CN201581914U Slidable direction-changing mechanism
09/15/2010CN201581913U Hydraulic bracket for fully-mechanized mining of low coal seams
09/15/2010CN201581912U Hydraulic bracket and supercharging device thereof
09/15/2010CN101832150A Ultra thick coal bed fully mechanized underground mining protection process and special protection supporting frame
09/15/2010CN101832146A Transversal reverse-four-link-bar advance bracket of large-obliquity working surface
09/15/2010CN101832144A Narrow comprehensive mining hydraulic bracket
09/15/2010CN101832103A Movable two-arm hanging wall anchor rod and anchor cable construction drill carriage
09/15/2010CN101832102A Movable two-platform partitioned four-arm hanging wall anchor rod and anchor cable construction drill carriage
09/08/2010CN201574769U High-hanging supporting roof
09/08/2010CN201574768U Hydraulic support of composite mining of thin coal seam of large height-adjusting rate breaking machine
09/08/2010CN201574767U Spacing protection device for balance jack of mine-used hydraulic support
09/08/2010CN201574766U Duplex movable walking support
09/08/2010CN201574765U Secondary unloading hydraulic control one-way valve
09/08/2010CN1605714B Working face apparatus for excavation
09/08/2010CN101824995A Tunnel-dedicated trolley
09/08/2010CN101824986A Coal mining process of drilling, loading, conveying and anchoring integral machine
09/02/2010US20100221073 Engineered composite wooden crib for use as a mine support
09/01/2010CN201568068U Reversing valve for support
09/01/2010CN201568067U Integrated fully mechanized top-coal caving face end support frame
09/01/2010CN101818649A Hydraulic supporting device for fully-mechanized coal driving workface
09/01/2010CN101818648A Roadside extrusion forming template filled by gangue
08/2010
08/25/2010CN201560785U Top adjusting mechanism of timely support device of fully-mechanized roadheader
08/25/2010CN201560781U Gob-side entry retaining roadway support device for half coal rock
08/18/2010CN201554484U Hydraulic support and bottom lifting device thereof
08/18/2010CN201554483U Thin seam blasting mining movable coal baffle device and hydraulic support and conveyor thereof
08/18/2010CN201554482U Hexagonal support type coal mining and filling hydraulic support
08/18/2010CN201554481U Filling supporting hydraulic support
08/17/2010US7775748 Shield support
08/11/2010CN201546744U Bottom lifting device of hydraulic bracket of thin coal seam
08/11/2010CN201546743U Filling block for pillar socket of hydraulic support base
08/11/2010CN101798935A Transverse self-moving combined suspension hydraulic bracket
08/11/2010CN101372891B Strip filling integral backstopping coal mining method
08/04/2010CN201539274U Tank type filling hydraulic support
08/04/2010CN201539273U Suspension top beam hydraulic support anti-squeezing device
08/04/2010CN201539272U Lapping bracket waste rock stopping device
08/04/2010CN1550639B Apparatus for lifting cylinder
08/04/2010CN101793159A Dam-type filling hydraulic bracket in mined-out region
08/04/2010CN101793158A Semi-unload alternately push type razor-thin coal seam hydraulic support
07/2010
07/29/2010DE102009006191A1 Method for mining coal, involves carrying out mining by two separate mining equipments in steps perpendicular to tunneling direction, and assigning separate lower and upper conveyors to mining equipments
07/29/2010DE102007014662B4 Verfahren zum Betreiben eines Abbaugerätes, Strebausbau zur Durchführung des Verfahrens und Steuerung für einen solchen Strebausbau Method for operating a mining tool, face support for implementing the method and controller for such a longwall
07/28/2010CN201535175U 悬移顶梁液压支架用折叠式移溜器 Suspended Load top beam hydraulic support with folding shift running device
07/28/2010CN1932240B Full-seam cutting, retreating, separate moving and full-caving comprehensive mechanized coal mining method
07/28/2010CN101787894A Guide rod type foresupport with large inclined angle working surface
07/28/2010CN101787889A Comprehensive mechanized coal mining method through cantilever support
07/28/2010CN101787888A Method of mining coal
07/21/2010CN101782364A Device and method for detecting position deviation angle between coal cutter and hydraulic support
07/21/2010CN101781987A Tunneling and supporting machine
07/14/2010CN201526321U Fully-mechanized top coal caving coal mining equipment for advanced support and full mechanization of lengthened front beam of three-soft coal bed
07/08/2010WO2010075947A1 Method for adjusting an automatic level control of the plane in planing operations in hard coal mining
07/07/2010CN201521311U Hydraulic support
07/07/2010CN201521308U High flow capacity insertion type manual direction-changing valve for hydraulic supporting frame
07/07/2010CN101769159A Flexible shield-type hydraulic support for coal mine
07/07/2010CN101766927A High-pressure and high-precision backwashing filtration station
07/01/2010US20100164274 Shield Machine
06/2010
06/30/2010CN201517421U Hydraulic support and telescopic girder apparatus thereof
06/30/2010CN101761351A Active stop device and hydraulic support
06/23/2010CN201513191U Roadway temporary support self-advancing hydraulic support
06/23/2010CN201513190U Front support of stowing hydraulic support
06/23/2010CN201513189U Rear support of stowing hydraulic support
06/23/2010CN201513186U Multifunctional hydraulic control check valve
06/23/2010CN1550638B System composed of hydraulic assembly and actuator and/or sensor
06/23/2010CN101749042A Top adjusting mechanism of tunneling immediate support device
06/23/2010CN101333930B Double-fork type hyperstatic hydraulic support
06/22/2010US7740421 Arrangement for the admission of pressurized water to spray systems
06/17/2010WO2010066180A1 Filling and supporting hudraulic support with tamping mechanism
06/16/2010CN201507320U Light top caving coal support frame for front-single and rear-single positive four-connecting rod
06/16/2010CN101737072A Hydraulic support end socket electro-hydraulic controller
06/09/2010CN201502393U Human-computer interface control panel of hydraulic bracket controller
06/09/2010CN201502392U Automatic loading device of hydraulic bracket
06/09/2010CN201502391U Hydraulic bracket base with pavement railing device
06/09/2010CN201502390U Mechanical coal mining top plate crushing work surface hydraulic support
06/09/2010CN201502389U Comprehensive mechanized mining large tilt angle working surface hydraulic bracket pedestrian passage waste rock blocking device
06/09/2010CN201502388U Track gangue-blocking device of large dip angle working face hydraulic support
06/09/2010CN201502387U Side protecting plate of hydraulic bracket shield beam
06/09/2010CN201502386U Movable side protection plate of hydraulic support
06/09/2010CN101730786A Shield control device for carrying out the longwall function of a longwall unit in the longwall face working in a mine
06/09/2010CN101725366A Position detecting device for coal winning machine on integrated excavating coal face
06/09/2010CN101725365A Hexastyle supporting type coal mining and filling hydraulic bracket
06/09/2010CN101333933B Hyperstatic hydraulic support
06/09/2010CN101333929B Multiple layer double-fork type hyperstatic hydraulic support
06/09/2010CN101333928B Multiple layer double-fork type hyperstatic hydraulic support
06/02/2010CN201496089U Hydraulic bracket controller operation panel
06/02/2010CN201496088U Hydraulic bracket controller casing
06/02/2010CN201496087U Lift platform mechanism for hydraulic bracket with great mining height
06/02/2010CN101718204A Electrohydraulic control device used for frame controller of hydraulic support
06/02/2010CN101333932B Double layer hyperstatic hydraulic support
06/02/2010CN101333931B Multiple layer hyperstatic hydraulic support
06/02/2010CN101319613B Twin-beam twin-column stepping leading hydraulic support
06/02/2010CN101251022B Immediate support device for digging machine
05/2010
05/26/2010CN201486582U Flexible support
05/26/2010CN201486581U Flexible slipping hydraulic support system
05/26/2010CN101029273B Liquefied concentrate for hydraulic stand
05/19/2010CN201474717U Beam mover
05/19/2010CN201474716U Large mining height hydraulic bracket multilevel wall supporting mechanism
05/19/2010CN201474715U Stepping self-moving type cantilever timbering on integrated drilling working surface
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