Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21C - Mining or quarrying › E21C 29 - Propulsion of machines for slitting or completely freeing the mineral from the seam
Patents for E21C 29 - Propulsion of machines for slitting or completely freeing the mineral from the seam (839)
10/2012
10/02/2012US8276990 Drive station for an underground plough system and method for repairing recovery ploughs
10/02/2012US8276882 Wire bundle pull tool
09/2012
09/26/2012CN202451153U Entry-driving machine and auxiliary walking system thereof
09/19/2012EP2499334A2 Drive transmission method in a longwall shearer loader
09/19/2012CN102678111A Efficient blocking coal shoveling device
09/19/2012CN102678110A Cutting-head type short-wall large-mining-height coal winning machine and comprehensive mechanized coal mining process
09/19/2012CN102678109A Cutting part protective device for continuous mining machine and continuous mining machine
09/18/2012CA2699396C Foldable or detachable feed rail for rock drill
09/12/2012CN202431271U Supporting sliding shoe of coal mining machine and coal mining machine
09/11/2012US8262169 Rack bar haulage system with an improved rackbar to line pan connection
09/05/2012CN202417497U Contraposition structure for traveling part and traction part of crawler, coal mining machine and heading machine
08/2012
08/29/2012CN202402031U T-shaped guide slot plug-in sliding shoe rack
08/29/2012CN102650209A Tunneling machine
08/22/2012CN202391426U Up-down swinging propulsion device of rock-roadway tunneling machine
08/22/2012CN202391425U Rotary-percussion coal mining machine
08/22/2012CN202391424U Supporting type comprehensive bolter miner
08/15/2012EP2486238A2 Feed system for an underground winning machine, rack bar and drive sprocket therefor
08/15/2012CN102635353A Double-cantilever hard rock coal roadway heading and anchoring device
08/15/2012CN102108864B Coal mining machine and guiding skid shoe component
08/09/2012US20120198950 Feed system for an underground winning machine, rack bar and drive sprocket therefor
08/08/2012CN202370514U Chainless traction walking mechanism for coal mining machine
08/01/2012CN202360093U High-efficiency clumpy coal shovel
07/2012
07/25/2012CN102606158A Novel low coal seam coal mine underground mining complete equipment
07/25/2012CN102606156A Vibrating shovel type coal mining machine
07/18/2012CN202338343U 一种铲掘式全液压采煤机 One kind of shovel-type hydraulic shearer
07/18/2012CN102587904A Comprehensive mechanical rock lane tunneling machine
07/11/2012CN202325506U pin rail for coarse-pitch scraper conveyor
07/11/2012CN202325505U 大坡度掘进机 Large slope boring machine
07/11/2012CN202325501U 短壁大采高采煤机 Short wall with large mining height Shearer
07/11/2012CN102575518A Feed system for an underground winning machine, rack bar and drive sprocket therefor
07/11/2012CN102575517A Rack and pinion arrangement for a mining extraction machine and rack and pinion rod therefor
07/11/2012CN102562061A Roller coal mining machine
07/11/2012CN102562059A Non-contact monitoring device and non-contact monitoring method for load process of coal-mine excavating mechanical track walking system
07/11/2012CN102562058A Overload protecting device for running wheel of coal mining machine and coal mining machine provided with overload protecting device
07/10/2012US8214987 Remote vacuum or pressure sealing device and method for critical isolated systems
07/04/2012CN202300387U 掘进机行走机构 TBM travel agencies
07/04/2012CN202300386U 大坡度掘进机 Large Slope boring machine
07/04/2012CN102536235A T-shaped guide groove plug-in-type slip shoe frame
07/04/2012CN102536231A Rapid propulsion system of drill mounted unit for coal mine
07/04/2012CN102536230A Drive mechanism for a longwall mining machine
07/04/2012CN102535269A Adjustable coal mining machine rail
07/04/2012CN101595275B Guide shoe for a roller-type loader and wear inserts for guide shoes
06/2012
06/27/2012CN101881163B Continuous miner and running part thereof
06/21/2012DE102010054594A1 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
06/20/2012CN102505941A Tunneling machine
06/07/2012WO2011029111A3 Tunneling machine or extraction machine
05/2012
05/30/2012EP2456953A2 Rack and pinion arrangement for a mining extraction machine
05/30/2012CN202250084U Toothed rail pin limit device of coal mining machine
05/30/2012CN202250074U Outside oil-charging lubricating traveling mechanism
05/30/2012CN202250073U Coal mining machine rack rail fixing device
05/23/2012CN202228076U Coal mining machine and supporting device thereof
05/10/2012WO2011105906A3 Launch vehicle for a mining system, a mining system and a method for mining
05/10/2012WO2011010258A3 Rack and pinion arrangement for a mining extraction machine
05/10/2012US20120111133 Rack and pinion arrangement for a mining extraction machine and rack and pinion rod therefor
04/2012
04/26/2012WO2012052496A1 Excavating deposits from an underground formation layer
04/26/2012CA2815146A1 Excavating deposits from an underground formation layer
04/18/2012CN101737043B 巷道掘进机辅助侧行走机构 Roadheader auxiliary side travel agencies
04/18/2012CN101737042B 巷道掘进机辅助顶行走机构 Roadheader auxiliary top travel agencies
04/11/2012CN202187764U 整体移动式砂矿采选机组 Overall mobile sand ore mining unit
04/11/2012CN202187761U High-power heavy type low seam mining machine
04/11/2012CN102410017A 支护式综合掘锚机 Supporting style integrated dig windlass
04/04/2012CN102400685A 行走部涨紧装置及连续采煤机 Walking Ministry tensioner device and continuous miner
04/04/2012CN102400682A 高效成块铲煤机 Efficient shovel coal into blocks
03/2012
03/28/2012CN102395756A Mining plough for plough systems and plough system for inclined formation
03/20/2012US8136546 Pressure relief valve
03/07/2012CN102367733A Coal mining machine and support device thereof
02/2012
02/29/2012EP2422046A2 Mining plough for plough systems and plough system for inclined formation
02/29/2012CN102364048A Comprehensive mechanized rock roadway tunneling machine
02/23/2012US20120043802 Bit arrangement for a mining plough, and mining plough for plough systems
02/21/2012US8118282 Method and device for installing cable into cable guide tubing
02/15/2012EP2286064B1 Chain guide for a driving chain of a mining machine
02/09/2012US20120032495 Mining plough for plough systems and plough system for inclined formation
02/09/2012US20120031210 Rack arrangement for underground winning installations and bearing bracket therefor
02/08/2012CN202140086U Rocker coal mining machine with double cutting motors
02/08/2012CN102345457A Large-gradient continuous coal mining machine
02/01/2012CN102337889A Coal mining machine and supporting device thereof
02/01/2012CN102337888A Large-gradient development machine
02/01/2012CN102337887A Overpass chain cutting tower type lump extraction support protection conveying type combined lump coal machine
01/2012
01/25/2012CN202125295U Rod linked linear impact coal-shoveling machine
01/18/2012CN102322260A Waterproof and explosion-proof digital control type multifunctional unmanned mining machine
01/11/2012CN202108510U Horizontal advancing regulating and controlling device for conveyor or coal planer
01/04/2012CN102305067A Development machine mechanism
12/2011
12/28/2011CN202090917U 回转移动式撬毛车 Rotary Mobile pry gross vehicle
12/28/2011CN102296952A 连采机分体式行走架体 Continuous Mining Machine Split walking frame body
12/21/2011CN202081891U 用于采煤机行走机构的位移检测装置 Shearer displacement detection device for walking mechanism
12/21/2011CN102287185A 一种大功率重型薄煤层采煤机 One kind of high-power heavy thin seam Shearer
12/21/2011CN101105127B 辊式装料机驱动部件及其导向卡块 Roll loader drive assembly and guide the card block
11/2011
11/30/2011CN202055822U 一种切割头式短壁采煤机 A cutting-head short wall Shearer
11/30/2011CN1609472B 链条 Chain
11/29/2011US8066260 Cable pulling system
11/24/2011WO2011144223A1 Face equipment set up for inertial navigation, and method for operating said equipment
11/09/2011CN202031591U Fully mechanized coal face complete equipment and coal mining machine thereof
11/09/2011CN101660409B Driving speed reducing device
10/2011
10/27/2011WO2011042871A3 Feed system for an underground winning machine, rack bar and drive sprocket therefor
10/19/2011CN202012347U Coal mining machine with automatic centralized lubricating function
10/13/2011WO2011059348A3 Drive transmission method in a longwall shearer loader
10/06/2011US20110239896 Rack bar haulage system with an improved rackbar
10/05/2011CN202001011U Self-lubricating walking mechanism for coal mining machine
09/2011
09/28/2011CN201991527U 步进式行走掘进机 Stepping walking roadheader
09/28/2011CN102200011A Cutting head type short wall coal mining machine
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