| 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) |
|---|
| 11/09/2011 | CN202031618U Novel shield-type fully mechanized hydraulic support for thin seam |
| 11/09/2011 | CN202031611U Automatic telescopic sealing device of hydraulic support |
| 11/09/2011 | CN102235174A Improvements in and relating to long wall hydraulic supply systems |
| 11/09/2011 | CN102235173A Locking device of hydraulic bracket side guard plate |
| 11/08/2011 | US8052353 System and method for mine roof counter bore and cable bolt head securement therein |
| 11/02/2011 | CN202023577U Several piece replacement mechanism for hydraulic support |
| 11/02/2011 | CN202023576U Controller of electrohydraulic control device for mining intrinsic safety type hydraulic support |
| 11/02/2011 | CN202023575U Hinging structure used for top beam of hydraulic bracket |
| 11/02/2011 | CN202023574U Big-drop transition bracket |
| 11/02/2011 | CN202023573U Device for preventing reversed loader from floating upwards |
| 11/02/2011 | CN202023559U Comprehensive dig-anchor machine |
| 11/02/2011 | CN102230387A Movable anti-falling rack canopy guard device and tip bracket |
| 11/02/2011 | CN101725366B Position detecting device for coal winning machine on integrated excavating coal face |
| 10/26/2011 | EP2304180B1 Shield support assembly for underground mining and supporting surface element therefor |
| 10/26/2011 | CN202017508U Powerful crest truncating bracket for both mechanical mining and blast mining |
| 10/26/2011 | CN202017507U Steep-dip hydraulic bracket group for thin coal layer |
| 10/26/2011 | CN102226410A Hydraulic support advancing mechanism and thin coal seam hydraulic support |
| 10/26/2011 | CN102226409A Stepped-type support of top paving mesh laneway blast advancement face |
| 10/19/2011 | EP2378060A1 Improvements in and Relating to Long Wall Hydraulic Supply Systems |
| 10/19/2011 | EP2378059A1 Improvements in and relating to long wall hydraulic supply systems |
| 10/19/2011 | CN202012365U Hydraulic support with prepositioned positive four bar linkage |
| 10/19/2011 | CN202012364U Onboard advance support device for cantilever excavator |
| 10/19/2011 | CN202012363U Waste filling mining hydraulic bracket |
| 10/19/2011 | CN102221832A Coal mine unmanned workface development system |
| 10/19/2011 | CN102220874A Machine-mounted tunneling working surface head-on temporary support device |
| 10/19/2011 | CN102220873A Walking type anchor protecting all-in-one machine of front and rear gantry frame |
| 10/13/2011 | US20110248548 Method of Setting an Automatic Level Control of the Plow in Plowing Operations of Coal Mining |
| 10/12/2011 | CN202007679U Slider for moving long steel beam underground in coal mine |
| 10/12/2011 | CN101737072B Hydraulic support end socket electro-hydraulic controller |
| 10/12/2011 | CN101718204B Electrohydraulic control device used for frame controller of hydraulic support |
| 10/05/2011 | CN202001044U Hinging device and hydraulic support |
| 10/05/2011 | CN202001043U Split top beam combined suspended hydraulic support |
| 10/05/2011 | CN202001042U Novel telescopic tail compression leg |
| 10/05/2011 | CN202001041U Locking device for side protection plate of hydraulic support |
| 10/05/2011 | CN202001031U Plug-in mounting type small-flow hard sealing reversing valve |
| 10/05/2011 | CN102207003A Advance support bracket set special for conveyor gateway on fully-mechanized coal mining working surface |
| 10/05/2011 | CN101358532B Shield support |
| 09/28/2011 | CN201991543U 一种轻型掘进机用托梁器 Boring machine with a lightweight device joists |
| 09/28/2011 | CN201991542U 一种液压支架抬底装置及液压支架 A hydraulic lift bottom bracket unit and hydraulic support |
| 09/28/2011 | CN201990432U Hydraulic propelling jack and hydraulic support |
| 09/28/2011 | CN102200021A Floating adjustable base lifting device and thin coal seam hydraulic support |
| 09/28/2011 | CN101818649B Hydraulic supporting device for fully-mechanized coal driving workface |
| 09/22/2011 | WO2010149315A3 Method for the automated production of a defined face opening by means of slope-assisted radar navigation of the roller of a roller cutter loader |
| 09/21/2011 | EP2366059A1 Method for adjusting an automatic level control of the plane in planing operations in hard coal mining |
| 09/21/2011 | CN201982129U 抽拉式移动顶梁 Pull-top beam moves |
| 09/21/2011 | CN201982128U 伸缩式掘进及时支护装置 Heading timely support telescopic device |
| 09/21/2011 | CN201982127U 多级插接连杆式充填液压支架 Multi-level plug-link filling hydraulic support |
| 09/21/2011 | CN201982126U 门式巷道支护支架 Gantry roadway bracket |
| 09/21/2011 | CN201982125U 综放工作面端头尾超前支护支架 Comprehensive Face Touwei advance support bracket |
| 09/21/2011 | CN201982120U 插装式手动换向阀 Cartridge manual valve |
| 09/21/2011 | CN101749042B Top adjusting mechanism of tunneling immediate support device |
| 09/21/2011 | CN101353966B Assembled support |
| 09/14/2011 | CN201972721U 液压支架及其抬底装置 Hydraulic support and lift the bottom device |
| 09/14/2011 | CN201972720U 可伸缩柔性掩护支架 Scalable Flexible Shield |
| 09/14/2011 | CN102182487A 流体充填液压支架 Fluid filled hydraulic support |
| 09/14/2011 | CN102182486A Great-drop transition support |
| 09/14/2011 | CN102182485A Vehicle-mounted advance support device of cantilever type excavator |
| 09/14/2011 | CN101705833B Human-computer interface control panel of hydraulic support frame controller |
| 09/07/2011 | CN201963323U 液压支架伸缩梁 Telescopic hydraulic support beams |
| 09/07/2011 | CN101418688B Intelligent full automatic combine coal mining system |
| 08/31/2011 | CN201953393U 具有压实功能的反四连杆式充填液压支架 Has the function of anti-compacted fill hydraulic four-link bracket |
| 08/31/2011 | CN201953392U 一种可调节水平工作阻力的液压支架 An adjustable hydraulic support working resistance level |
| 08/31/2011 | CN201953391U 综合机械化充填采煤工作面端头液压支架 Mechanized coal mining face filled with hydraulic support ends |
| 08/31/2011 | CN201953390U 液压迈步式超前支护装备 Hydraulic swing-style advance support equipment |
| 08/31/2011 | CN201953389U 急倾斜煤层工作面轻型架间挡矸装置 Steeply inclined coal seam Face Light shelf unit block Refuse |
| 08/31/2011 | CN102168573A Equipment matching method for fully mechanized mining working surface with large mining height |
| 08/31/2011 | CN102168572A Waste filling supporting bracket |
| 08/31/2011 | CN102168571A Basic bracket for filing support |
| 08/31/2011 | CN102168570A Hydraulic support |
| 08/31/2011 | CN101555800B Compound front beam hydraulic support and applications thereof |
| 08/25/2011 | DE102010000481A1 Verfahren zur Bestimmung der Position oder Lage von Anlagekomponenten in Bergbau-Gewinnungsanlagen und Gewinnungsanlage Method for determining the position or location of plant components in mining production equipment and production plant |
| 08/24/2011 | CN201943732U 一种临时支护机护顶板 Retaining a temporary roof support machines |
| 08/24/2011 | CN201943731U 一种液压支架底座腔体结构 A hydraulic support base cavity structure |
| 08/24/2011 | CN201943730U Double-stage side protecting device for comprehensive mechanized coal mining and large mining height working face transition supports |
| 08/24/2011 | CN201943729U Single-grade side protecting device for transition support of comprehensive large-mining high working surface |
| 08/24/2011 | CN201943728U 一种液压支架底座腔体结构 A hydraulic support base cavity structure |
| 08/24/2011 | CN201943727U 一种液压支架前连杆的改造结构 A hydraulic transformation of the structure of the front linkage bracket |
| 08/24/2011 | CN201943726U 一种具有充填防漏功能的液压支架 A leak of hydraulic support functions have filled |
| 08/24/2011 | CN201943719U 一种液控单向阀 One kind of check valve |
| 08/24/2011 | CN201943715U 一种液压支架及其脚踏板装置 A hydraulic device holder and pedals |
| 08/24/2011 | CN102165139A Longwall equipment having a cutter loader guided on the longwall conveyor in a height adjustable manner |
| 08/24/2011 | CN102162366A Device for preventing transferring machine from floating upwards |
| 08/24/2011 | CN101705834B Operation panel of hydraulic support frame controller |
| 08/18/2011 | US20110198914 Method and device for working rock |
| 08/17/2011 | CN201934118U 电磁先导阀驱动器 Solenoid pilot valve drive |
| 08/17/2011 | CN201934117U 一种工作面液压支架电液控制系统 A worktop hydraulic support electro-hydraulic control system |
| 08/17/2011 | CN201934116U 一种矿用先导式手动支架反冲洗过滤器 Ore bracket with the pilot manual backwash filter |
| 08/17/2011 | CN201934115U 特大采高液压支架 Large mining height hydraulic support |
| 08/17/2011 | CN201934114U 一种滑柱式自移液压支架 Strut one kind of self-moving hydraulic support |
| 08/17/2011 | CN201934111U 插装式平衡千斤顶双向锁 Cartridge jack balanced two-way lock |
| 08/17/2011 | CN201934110U 电液控换向阀 Electro-hydraulic control valve |
| 08/17/2011 | CN201934108U 一种液控单向阀 One kind of check valve |
| 08/17/2011 | CN102155222A Device and control method for automatically aligning scraper conveyor body for fully-mechanized surface |
| 08/17/2011 | CN102155219A Comprehensive dredging machine |
| 08/17/2011 | CN101451439B Hydraulic support |
| 08/10/2011 | CN201924956U 一种新型支架喷雾降尘装置 A new stent spraying device |
| 08/10/2011 | CN201924952U 一种双行程液压支架 A two-stroke hydraulic support |
| 08/10/2011 | CN201924951U 薄煤层炮采垛式支架 Shallow seams crib bracket |
| 08/10/2011 | CN201924950U Thin seam four-column paste filling and supporting integral hydraulic support |
| 08/10/2011 | CN201924949U Bottom lifting mechanism for hydraulic support of thin coal seam |