Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21C - Mining or quarrying › E21C 31 - Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
Patents for E21C 31 - Driving means incorporated in machines for slitting or completely freeing the mineral from the seam (738)
07/2011
07/27/2011CN102134995A Mining machine with driven disc cutters
07/20/2011CN101705978B Shipping device reducer of continuous miner
07/20/2011CN101705817B Subaerial comprehensive winning machine
07/06/2011CN102116151A Continuous miner and cutting speed reducer thereof
06/2011
06/29/2011CN201884028U Coal cutter with internal three-ring deceleration transmission mechanism
06/29/2011CN102108865A Hydraulic system of coal mining machine
06/29/2011CN102108862A Coal mining equipment and roller electrical speed regulating system
06/22/2011CN201874571U Hydraulic oil tank structure for continuous miner
06/15/2011CN201865668U Novel coal cutting machine
06/01/2011CN201851120U Integrated compact high-power hydraulic pump station for novel tunneling machine
06/01/2011CN201851119U Hydraulic device for electric traction coal mining machine
05/2011
05/25/2011CN102071938A Coal cutter with internal three-ring reducing transmission mechanism
05/25/2011CN102071935A Cutting part of heading machine
05/18/2011CN201835829U Cutting part of road header
05/18/2011CN102061914A Method for steering a mining machine cutter
05/11/2011CN201826846U Continuous miner and dust collector thereof
05/11/2011CN201826840U Double-heightening system of coal-winning machine
05/04/2011CN201818309U Double-circulation lubricating and cooling device of cutting speed reducer of roadheader for coal mines
05/04/2011CN201818308U Cutting head driving device of heading machine
05/03/2011US7934776 Mining machine with driven disc cutters
04/2011
04/27/2011EP2235325B1 Roof cutter holder adjustment device and securing element therefor
04/27/2011CN201810313U Driving assembly for conveying materials for excavating machine
04/27/2011CN201810310U Modular alternating current traction coal mining machine
04/20/2011CN201802405U Diesel engine type drum open continuous miner
04/13/2011CN201794588U Welding traction box of coal mining machine with replaceable speed-reducing box
04/13/2011CN102011586A Integrated coal mining facility and coal mining machine thereof
04/06/2011CN201786358U Longitudinal-axis type double-cutting-head hydraulic welding cutting arm
04/06/2011CN102003183A Intelligent type heading machine
04/06/2011CN102003179A Saw blade type cave development machine
03/2011
03/23/2011CN201771499U Angle modulation device for connection of rocker arm and power arm
03/23/2011CN101270661B Mine explosion-proof coal rock full hydraulic pulverizing development machine
03/17/2011US20110062766 Drive for a cutting or grinding machine
03/16/2011CN201763333U Electric traction shearer for ultra thin coal seam
03/16/2011CN101985879A Integrated compact type high-power hydraulic power unit for novel heading machine
03/16/2011CN101985878A Tunnel mining machine
03/16/2011CN101251011B Rack-and-pinion type slewing equipment of coal-excavating development machine
01/2011
01/19/2011CN201714383U Compact continuous coal miner
01/19/2011CN201714382U Walking control system for hydraulic traction coal mining machine
01/05/2011CN201696044U Hydraulic system of coal winning machines
12/2010
12/15/2010CN201671629U Dynamic system of excavating loader
12/15/2010CN101915095A Drill loader
12/08/2010CN101910559A Roof cutter holder adjustment device and securing element therefor
12/08/2010CN101906969A Coal mining device and crushing mechanism thereof
12/01/2010CN201661296U C-shaped coal mining machine cutting part
11/2010
11/24/2010CN201650286U Speed reducer and development machine comprising same
11/24/2010CN201650285U Coal mining loader
11/24/2010CN201650280U Integrated open cast coal mining machine
11/24/2010CN201650105U Hydraulic travel motor
11/17/2010CN101887273A Automatic height-adjusting test device of coal mining machine roller and control method
11/10/2010CN201627581U Cutting head short-wall coal mining machine
11/10/2010CN101881165A Coal-mining machine hydraulic system
11/03/2010CN201620891U Variable frequency closed type hydraulic traction system of shearer
10/2010
10/06/2010EP2235325A2 Roof cutter holder adjustment device and securing element therefor
10/06/2010CN201599033U 一种悬臂式掘进机的液压驱动装置 A hydraulic drive system of roadheader
09/2010
09/01/2010CN201568435U Motor torque shaft of thin coal-bed winning machine
08/2010
08/25/2010CN201560761U Open-driving hydraulic traction coal mining machine
08/25/2010CN101812984A Idler-free transmission device for slicing portion of drum shearer
08/11/2010CN201546721U Mining scraping plate conveying chain
08/11/2010CN101798926A Angle regulator with rocker arm connected with power arm
08/04/2010CN101793149A Speed reducer and development machine comprising same
07/2010
07/28/2010CN101787886A Coal mine machinery and transmission system thereof
07/21/2010CN201531566U Two-way output decelerator
07/21/2010CN101250289B Flame-resistant anti-static V belt under glue and preparation technique thereof
07/07/2010CN201521301U Heading machine single motor transfer case
06/2010
06/16/2010CN201507308U Hydraulic hauled shearer with remote operation
06/09/2010CN201502373U On-vehicle frequency changing and speed regulating electric traction thin coal-bed coal mining machine
06/02/2010CN101250291B Flame-resistant anti-static V belt swathe fractioning and preparation technique thereof
05/2010
05/19/2010CN101709642A Track-type four-arm rock drilling jumbo
05/19/2010CN101709641A External traction apparatus of thin coal seam shearer
05/19/2010CN101215966B Tunneling machine cutting feed volume automatic control method
05/19/2010CN101059162B Speed reducer of continuous coal cutter
05/19/2010CN101050703B Underground continuous tunnelling machine
05/12/2010CN201460887U Motor embedded coal mining machine
05/12/2010CN201460884U Steeply sloping seam coal mining machine
05/12/2010CN101705978A Shipping device reducer of continuous miner
05/12/2010CN101705817A Subaerial comprehensive winning machine
05/05/2010CN201450484U Special water cooling variable frequency speed controlling device for coal mining machine
04/2010
04/28/2010CN201443401U Height-adjustable oil cylinder of coal winning machine
04/28/2010CN201443397U Mine stone sawing machine
03/2010
03/24/2010CN201428454Y Low coal seam coal cutter capable of cutting ferric sulfide concretion
02/2010
02/24/2010CN201412151Y Motor transmission mechanism used for hydraulic rock drill
02/24/2010CN201412150Y Drilling machine integration hydraulic control system
02/17/2010CN201407067Y Coal mine underground explosion-proof multifunctional vehicle
02/03/2010CN201396157Y Automatic rocker arm height displaying and adjusting system of coal mining machine
02/03/2010CN201396156Y Rocker arm height-adjustment structure of coal mining machine
01/2010
01/20/2010CN201386563Y Excavator and driving wheel thereof
01/20/2010CN201386562Y Development machine
01/06/2010CN100577985C Shortwall mining forklift in underground mine
12/2009
12/09/2009CN201358784Y Mine arm-hammer type tunnel digging loader
12/09/2009CN100567701C Coal mining and digging machine
12/02/2009CN201354638Y Cutting speed reducer of coal mine development machine
12/02/2009CN201354637Y Cutting speed reducer of coal mine development machine
12/02/2009CN100564798C Roadheader
11/2009
11/25/2009CN201351493Y Gyrator for crawler type down-hole drill jumbo
09/2009
09/24/2009WO2009087078A3 Roof cutter holder adjustment device and securing element therefor
08/2009
08/26/2009CN100532784C Driving head for entry-driving machine
08/12/2009CN201288561Y Conveying groove driving apparatus and digging machine
08/05/2009CN201284650Y Creeping baseboard chain hauled shearer
07/2009
07/29/2009CN101493010A Incision speed reducer for development machine of coal mine
07/22/2009CN101487391A Cutting speed reducer of coal mine development machine
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