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)
10/2013
10/02/2013CN103334748A Lifting travelling device and reversed loader using lifting travelling device
10/01/2013US8544960 Chain guide for a driving chain of a mining machine
09/2013
09/25/2013CN203214060U Coal wall side rack-type chainless traction device of climbing floor coal cutter
09/25/2013CN203214057U Bidirectional lump coal impact-cutting machine
09/25/2013CN203214056U Vertical lift lump coal cutting machine
09/24/2013US8540215 Wire grip
09/18/2013CN103314182A Planing device
09/17/2013US8534765 Method for introducing a vertical shaft and shaft driving machine
09/11/2013CN203189014U Vertical shearer with large inclination angle
08/2013
08/28/2013CN102016229B Chain guide for a driving chain of a mining machine
08/27/2013US8517344 System and method for installing fiber optic cable
08/20/2013US8511756 Continuous surface mining system
08/14/2013CN203130084U Running mechanism of thin seam coal shearer
08/13/2013US8505878 Apparatus and method for enhancing the reconductoring of overhead electric power lines
08/07/2013CN203114308U Gantry self-propelled anchoring and supporting machine
08/07/2013CN203114287U Chainless traction and braking device for thin seam coal mining machine
07/2013
07/31/2013CN203097893U Traveling assisting device of tunneling machine
07/24/2013CN203081440U Walking type coaxial coal mining machine
07/24/2013CN103216226A Water-jet cutting and impacting mining machine
07/18/2013WO2013104024A1 Mining machine and shaft assembly for a mining machine
07/17/2013CN101688444B Drive station for underground plough system and method of repairing recovery ploughs
07/10/2013CN203050701U Traction part with bridge-type structure for low-seam coal-mining machine
07/10/2013CN203050699U Coal cutter with auxiliary support
07/10/2013CN203050698U Feed mechanism for mine drilling tunnelling
07/10/2013CN103195896A Traveling reducer and mining machinery
06/2013
06/26/2013CN203022740U Traveling wheel device of drum shearer
06/26/2013CN103174416A Multi-point driving electric traction coal mining machine
06/26/2013CN103174415A Coal mining machine with double-motor-driven traction section
06/19/2013CN203008901U Connecting piece between roadheader body and walking part as well as roadheader
06/19/2013CN203008900U Rack device for underground mining equipment and bearing support for the rack device
06/12/2013CN202991033U Improved electric traction device of low seam mining machine
06/12/2013CN202991032U Structure of walking frame of heading machine
06/12/2013CN202991031U Split type track frame
06/12/2013CN202991027U Mining tire-type hydraulic excavating drill carriage
06/11/2013US8459611 System for the simultaneous introduction of two items into a conduit
06/05/2013CN103132996A Large inclination angle vertical shearer
06/05/2013CN102116152B Guiding sliding shoe of coal cutter walking part
05/2013
05/29/2013CN202954815U Travelling mechanism of heading machine
05/22/2013CN202946155U Heading machine and auxiliary running device thereof
05/15/2013CN103104257A Coal mining machine and travel unit overload protective device thereof
05/14/2013US8439332 Apparatus and method for stringing aerial cables using aircraft
05/07/2013US8434741 Powered cable puller
05/07/2013US8434740 Apparatus (sheave) for guiding cable in and out of manholes and conduits
04/2013
04/24/2013CN202900274U Longitudinal and transverse cutting type thin coal seam lump coal mining machine
04/17/2013CN103046928A Heading machine
04/17/2013CN101772619B Extraction device, particularly for mining, and method for controlling the extraction device
04/09/2013US8413964 Fiber drop installation device
04/03/2013CN202850994U Novel thrust wheel walking mechanism of tunneling machine
04/02/2013US8408520 Apparatus for pushing conductors into conduit and other structures
03/2013
03/27/2013CN202832533U Traction walking mechanism of drum shearer
03/27/2013CN102116153B Coal mining machine and guide gliders thereof
03/27/2013CN101466917B System and method for controlling pipe pressurization of cable installation
03/13/2013CN202788842U Hauling part transmission system of variable frequency speed chainless electrically-hauled shearer
03/12/2013US8393687 Rack bar haulage system with an improved rackbar
03/06/2013CN202767984U Travelling wheel stop pin
03/06/2013CN202767983U Travel unit of roadheader
03/06/2013CN202767982U Auxiliary climbing device of large-gradient tunneling machine
03/05/2013US8387954 System for the simultaneous introduction of two items into a conduit
02/2013
02/20/2013CN202745871U Anti-back device of coal cutter axle
02/13/2013CN102926751A Split four-wheel drive traveling mechanism for heading machine
02/13/2013CN102926748A Double-cutterhead double-transverse-cylinder full-face tunneller
02/13/2013CN102022122B Support-type comprehensive tunneler
01/2013
01/30/2013CN202707065U Tracked all-hydraulic drill for coal mines
01/30/2013CN202707049U Trolley propulsion compensation clamp plate
01/30/2013CN102900436A Cylinder stepping type thin seam coal mining machine
01/23/2013CN202690062U Diesel powered full hydraulic continuous stripping machine
01/23/2013CN102889080A Dragging part of torque shunting thin coal layer mining machine
01/07/2013DE202011051567U1 Antriebs- oder Umkehrstation an einer Gewinnungs- oder Fördereinrichtung Drive or reverse station in a production or conveyor
01/02/2013CN202645560U Mechanical self-traveling device
01/02/2013CN202645559U Adjustable coal cutter track
01/02/2013CN202645555U Fully-sealed coal roadway heading-anchoring synchronizer
01/02/2013CN102852519A Guiding piston shoe and coal mining machine
12/2012
12/26/2012CN102839975A Hardrock tunneling machine
12/19/2012CN202611697U Comprehensive mechanical rock roadway heading machine
12/19/2012CN102828749A Swing rod transmission direct-impact coal shoveling machine
12/19/2012CN102828748A Swing rod link direct-impact coal shoveling machine
12/12/2012CN102817609A Anti-withdrawing device for wheel axle of coal mining machine
12/05/2012CN202578698U Novel thin seam coal mine downhole mining complete equipment
12/05/2012CN202578687U Track beam of mining mechanical crushing sieving machine of traction vehicle structural member
12/05/2012CN202578686U Quick propelling system of drill loader set for coal mine
12/05/2012CN102808618A Traction travelling mechanism for drum shearer
11/2012
11/28/2012CN202560217U Cutting head type short wall large mining height coal cutter loading device
11/28/2012CN202560216U Cutting head type short wall large mining height coal mining machine
11/22/2012WO2012113380A3 Planing device
11/22/2012DE102011050425A1 Rundstahlkette Steel chain
11/14/2012CN102777184A Mining system and method of mines
11/14/2012CN102777176A Propelling device of heading machine and full-section heading machine
11/07/2012CN202520311U Coal mining machine with vibrating shovel
11/07/2012CN202520308U Mechanical single arm type hydraulic anchor rod drilling machine
11/07/2012CN102770621A Launch vehicle for a mining system, a mining system and a method for mining
11/07/2012CN102767370A Integrated high-pressure abrasive jet joint-cutting and drilling coal seam tunnel boring machine
10/2012
10/31/2012CN102200011B Cutting head type short wall coal mining machine
10/24/2012CN102748023A Supporting device for coal cutter and coal cutter
10/17/2012CN102733807A Diesel-power full-hydraulic continuous stripping machine
10/17/2012CN102733805A Coal mining machine
10/10/2012CN202483570U Oscillating bar transmission linear-impact type coal shovel
10/10/2012CN102720493A Guide support device and coal cutter
10/03/2012CN102713145A Drive transmission method in a longwall shearer loader
10/03/2012CN102704931A Shockproof mechanism of coal mining robot
10/02/2012US8276991 Guide shoe for a roller-type loader and wear inserts for guide shoes
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