Patents for E21C 29 - Propulsion of machines for slitting or completely freeing the mineral from the seam (839) |
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10/02/2012 | US8276990 Drive station for an underground plough system and method for repairing recovery ploughs |
10/02/2012 | US8276882 Wire bundle pull tool |
09/26/2012 | CN202451153U Entry-driving machine and auxiliary walking system thereof |
09/19/2012 | EP2499334A2 Drive transmission method in a longwall shearer loader |
09/19/2012 | CN102678111A Efficient blocking coal shoveling device |
09/19/2012 | CN102678110A Cutting-head type short-wall large-mining-height coal winning machine and comprehensive mechanized coal mining process |
09/19/2012 | CN102678109A Cutting part protective device for continuous mining machine and continuous mining machine |
09/18/2012 | CA2699396C Foldable or detachable feed rail for rock drill |
09/12/2012 | CN202431271U Supporting sliding shoe of coal mining machine and coal mining machine |
09/11/2012 | US8262169 Rack bar haulage system with an improved rackbar to line pan connection |
09/05/2012 | CN202417497U Contraposition structure for traveling part and traction part of crawler, coal mining machine and heading machine |
08/29/2012 | CN202402031U T-shaped guide slot plug-in sliding shoe rack |
08/29/2012 | CN102650209A Tunneling machine |
08/22/2012 | CN202391426U Up-down swinging propulsion device of rock-roadway tunneling machine |
08/22/2012 | CN202391425U Rotary-percussion coal mining machine |
08/22/2012 | CN202391424U Supporting type comprehensive bolter miner |
08/15/2012 | EP2486238A2 Feed system for an underground winning machine, rack bar and drive sprocket therefor |
08/15/2012 | CN102635353A Double-cantilever hard rock coal roadway heading and anchoring device |
08/15/2012 | CN102108864B Coal mining machine and guiding skid shoe component |
08/09/2012 | US20120198950 Feed system for an underground winning machine, rack bar and drive sprocket therefor |
08/08/2012 | CN202370514U Chainless traction walking mechanism for coal mining machine |
08/01/2012 | CN202360093U High-efficiency clumpy coal shovel |
07/25/2012 | CN102606158A Novel low coal seam coal mine underground mining complete equipment |
07/25/2012 | CN102606156A Vibrating shovel type coal mining machine |
07/18/2012 | CN202338343U 一种铲掘式全液压采煤机 One kind of shovel-type hydraulic shearer |
07/18/2012 | CN102587904A Comprehensive mechanical rock lane tunneling machine |
07/11/2012 | CN202325506U pin rail for coarse-pitch scraper conveyor |
07/11/2012 | CN202325505U 大坡度掘进机 Large slope boring machine |
07/11/2012 | CN202325501U 短壁大采高采煤机 Short wall with large mining height Shearer |
07/11/2012 | CN102575518A Feed system for an underground winning machine, rack bar and drive sprocket therefor |
07/11/2012 | CN102575517A Rack and pinion arrangement for a mining extraction machine and rack and pinion rod therefor |
07/11/2012 | CN102562061A Roller coal mining machine |
07/11/2012 | CN102562059A Non-contact monitoring device and non-contact monitoring method for load process of coal-mine excavating mechanical track walking system |
07/11/2012 | CN102562058A Overload protecting device for running wheel of coal mining machine and coal mining machine provided with overload protecting device |
07/10/2012 | US8214987 Remote vacuum or pressure sealing device and method for critical isolated systems |
07/04/2012 | CN202300387U 掘进机行走机构 TBM travel agencies |
07/04/2012 | CN202300386U 大坡度掘进机 Large Slope boring machine |
07/04/2012 | CN102536235A T-shaped guide groove plug-in-type slip shoe frame |
07/04/2012 | CN102536231A Rapid propulsion system of drill mounted unit for coal mine |
07/04/2012 | CN102536230A Drive mechanism for a longwall mining machine |
07/04/2012 | CN102535269A Adjustable coal mining machine rail |
07/04/2012 | CN101595275B Guide shoe for a roller-type loader and wear inserts for guide shoes |
06/27/2012 | CN101881163B Continuous miner and running part thereof |
06/21/2012 | DE102010054594A1 Shearing unit for extraction machine used in mining industry, has four leg portions that are arranged in machine portion such that two leg portions are driven by rack and pinion while other two leg portions are driven by skid plate |
06/20/2012 | CN102505941A Tunneling machine |
06/07/2012 | WO2011029111A3 Tunneling machine or extraction machine |
05/30/2012 | EP2456953A2 Rack and pinion arrangement for a mining extraction machine |
05/30/2012 | CN202250084U Toothed rail pin limit device of coal mining machine |
05/30/2012 | CN202250074U Outside oil-charging lubricating traveling mechanism |
05/30/2012 | CN202250073U Coal mining machine rack rail fixing device |
05/23/2012 | CN202228076U Coal mining machine and supporting device thereof |
05/10/2012 | WO2011105906A3 Launch vehicle for a mining system, a mining system and a method for mining |
05/10/2012 | WO2011010258A3 Rack and pinion arrangement for a mining extraction machine |
05/10/2012 | US20120111133 Rack and pinion arrangement for a mining extraction machine and rack and pinion rod therefor |
04/26/2012 | WO2012052496A1 Excavating deposits from an underground formation layer |
04/26/2012 | CA2815146A1 Excavating deposits from an underground formation layer |
04/18/2012 | CN101737043B 巷道掘进机辅助侧行走机构 Roadheader auxiliary side travel agencies |
04/18/2012 | CN101737042B 巷道掘进机辅助顶行走机构 Roadheader auxiliary top travel agencies |
04/11/2012 | CN202187764U 整体移动式砂矿采选机组 Overall mobile sand ore mining unit |
04/11/2012 | CN202187761U High-power heavy type low seam mining machine |
04/11/2012 | CN102410017A 支护式综合掘锚机 Supporting style integrated dig windlass |
04/04/2012 | CN102400685A 行走部涨紧装置及连续采煤机 Walking Ministry tensioner device and continuous miner |
04/04/2012 | CN102400682A 高效成块铲煤机 Efficient shovel coal into blocks |
03/28/2012 | CN102395756A Mining plough for plough systems and plough system for inclined formation |
03/20/2012 | US8136546 Pressure relief valve |
03/07/2012 | CN102367733A Coal mining machine and support device thereof |
02/29/2012 | EP2422046A2 Mining plough for plough systems and plough system for inclined formation |
02/29/2012 | CN102364048A Comprehensive mechanized rock roadway tunneling machine |
02/23/2012 | US20120043802 Bit arrangement for a mining plough, and mining plough for plough systems |
02/21/2012 | US8118282 Method and device for installing cable into cable guide tubing |
02/15/2012 | EP2286064B1 Chain guide for a driving chain of a mining machine |
02/09/2012 | US20120032495 Mining plough for plough systems and plough system for inclined formation |
02/09/2012 | US20120031210 Rack arrangement for underground winning installations and bearing bracket therefor |
02/08/2012 | CN202140086U Rocker coal mining machine with double cutting motors |
02/08/2012 | CN102345457A Large-gradient continuous coal mining machine |
02/01/2012 | CN102337889A Coal mining machine and supporting device thereof |
02/01/2012 | CN102337888A Large-gradient development machine |
02/01/2012 | CN102337887A Overpass chain cutting tower type lump extraction support protection conveying type combined lump coal machine |
01/25/2012 | CN202125295U Rod linked linear impact coal-shoveling machine |
01/18/2012 | CN102322260A Waterproof and explosion-proof digital control type multifunctional unmanned mining machine |
01/11/2012 | CN202108510U Horizontal advancing regulating and controlling device for conveyor or coal planer |
01/04/2012 | CN102305067A Development machine mechanism |
12/28/2011 | CN202090917U 回转移动式撬毛车 Rotary Mobile pry gross vehicle |
12/28/2011 | CN102296952A 连采机分体式行走架体 Continuous Mining Machine Split walking frame body |
12/21/2011 | CN202081891U 用于采煤机行走机构的位移检测装置 Shearer displacement detection device for walking mechanism |
12/21/2011 | CN102287185A 一种大功率重型薄煤层采煤机 One kind of high-power heavy thin seam Shearer |
12/21/2011 | CN101105127B 辊式装料机驱动部件及其导向卡块 Roll loader drive assembly and guide the card block |
11/30/2011 | CN202055822U 一种切割头式短壁采煤机 A cutting-head short wall Shearer |
11/30/2011 | CN1609472B 链条 Chain |
11/29/2011 | US8066260 Cable pulling system |
11/24/2011 | WO2011144223A1 Face equipment set up for inertial navigation, and method for operating said equipment |
11/09/2011 | CN202031591U Fully mechanized coal face complete equipment and coal mining machine thereof |
11/09/2011 | CN101660409B Driving speed reducing device |
10/27/2011 | WO2011042871A3 Feed system for an underground winning machine, rack bar and drive sprocket therefor |
10/19/2011 | CN202012347U Coal mining machine with automatic centralized lubricating function |
10/13/2011 | WO2011059348A3 Drive transmission method in a longwall shearer loader |
10/06/2011 | US20110239896 Rack bar haulage system with an improved rackbar |
10/05/2011 | CN202001011U Self-lubricating walking mechanism for coal mining machine |
09/28/2011 | CN201991527U 步进式行走掘进机 Stepping walking roadheader |
09/28/2011 | CN102200011A Cutting head type short wall coal mining machine |