| Patents for E21C 31 - Driving means incorporated in machines for slitting or completely freeing the mineral from the seam (738) |
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| 07/04/2012 | CN202300389U Closed type height-adjusting system and coal mining machine |
| 07/04/2012 | CN202300388U 掘进机截割机构 Roadheader cutting mechanism |
| 07/04/2012 | CN102537221A Transmission device and coal mining machine |
| 07/04/2012 | CN102536233A Combined height-adjustable coal cutting machine with small roller and large mining height, as well as coal cutting process of combined height-adjustable coal cutting machine |
| 07/04/2012 | CN102536232A Double-row rack rail type multi-driving traction system for roller type coal mining machine |
| 07/04/2012 | CN102536230A Drive mechanism for a longwall mining machine |
| 07/04/2012 | CN102536226A Superposition arm three-roller large-mining-height coal mining machine |
| 07/04/2012 | CN101985879B Integrated compact type high-power hydraulic power unit for novel heading machine |
| 06/27/2012 | CN1880724B Driving device for rotating tools with superimposed oscillatory movement and tool therefore |
| 06/20/2012 | CN202280458U Coal mining machine and rocker arm thereof |
| 06/13/2012 | CN202273676U 一种滚筒式采煤机截割部 A drum type shearer cutting unit |
| 06/13/2012 | CN202273167U 破碎滚筒及自行式破碎采矿机 Broken Drum and self-crusher mining machine |
| 06/06/2012 | CN202266258U 一种两臂顶帮锚杆锚索施工钻车的液压锚杆钻机 One kind of arms anchor bolt in the top of the car's hydraulic bolt construction drilling rig |
| 05/30/2012 | CN202250094U Square-box tunnel boring machine |
| 05/30/2012 | CN202250077U Clutch handle hydraulic controlled device of coal-winning machine |
| 05/30/2012 | CN202250076U Development machine and cutting part thereof |
| 05/30/2012 | CN202250075U Rocker arm of coal mining machine as well as cooling device for same |
| 05/23/2012 | CN202228077U Cutting speed reducer special for continuous miner |
| 05/23/2012 | CN202228073U Tunnel boring machine for rock roadway |
| 05/23/2012 | CN102465702A 块煤采割机 Lump tapping machine |
| 05/23/2012 | CN101881165B Coal-mining machine hydraulic system |
| 05/16/2012 | CN202220604U Transmission device without idle wheel or with few idle wheels at cutting part of rotary drum type coal mining machine |
| 05/16/2012 | CN202220603U Power split type dead axle transmission gear train for traction box of coal m ining machine |
| 05/16/2012 | CN202220602U Split type cutting device of coal mining machine |
| 05/02/2012 | CN102434155A Coal cutter and rocker arm transmission system thereof |
| 04/25/2012 | CN102425413A 一种采煤机 One kind Shearer |
| 04/18/2012 | CN202195008U Cutting speed reducer of excavation machine for lane |
| 04/18/2012 | CN202194660U 一种掘进机及其回转装置 A tunneling machine and rotary device |
| 04/18/2012 | CN202194659U 挖掘宽度可调的连接架 Mining width adjustable connecting frame |
| 04/11/2012 | CN202187761U High-power heavy type low seam mining machine |
| 04/04/2012 | CN102400438A 破碎铣刨滚筒 Broken milling drum |
| 03/21/2012 | CN202170794U Development machine and cutting part thereof |
| 03/21/2012 | CN102383799A High pressure resistant internal-leakage-free cutting device of tunnel boring machine |
| 03/21/2012 | CN102383796A Rotating mechanism and excavating machine |
| 03/21/2012 | CN102383792A Cutting type remote control coal mining machine |
| 03/14/2012 | CN202165079U 一种矿用液压挖掘机分动箱的固定装置 A hydraulic excavator for mining division fixtures transfer case |
| 03/14/2012 | CN102373925A Double height adjusting system for coal cutter |
| 03/14/2012 | CN102373924A Entry-driving machine and cutting part thereof |
| 03/14/2012 | CN101798926B Angle regulator with rocker arm connected with power arm |
| 03/07/2012 | CN202160050U 安装在薄煤层采煤机摇臂中的水冷截割电机 Water-cooled mounted rocker in thin seam shearer cutting motor |
| 03/07/2012 | CN202158145U 一种动力传达装置 A power transmission device |
| 02/29/2012 | CN102364048A Comprehensive mechanized rock roadway tunneling machine |
| 02/29/2012 | CN101915095B Drill loader |
| 02/22/2012 | CN102359374A Retracting device of cutting arm of roadheader |
| 02/22/2012 | CN102359373A Drum shearer cutting part |
| 02/15/2012 | CN102352755A Square box shield machine |
| 02/15/2012 | CN102352750A Heading machine and star wheel external-teeth driving device for heading machine |
| 02/08/2012 | CN202140530U 液压缸曲轴旋转机构 Hydraulic cylinder crankshaft rotation mechanism |
| 02/08/2012 | CN202140086U Rocker coal mining machine with double cutting motors |
| 02/08/2012 | CN102345458A Drilling-milling-beam installation integrative machine for coal road |
| 02/01/2012 | CN202132040U 掘进机铲板及其星轮驱动装置 TBM shovel and star wheel drive |
| 01/18/2012 | CN202117671U Driving circuit board for exciting power of main control unit of coal cutter |
| 01/18/2012 | CN202117670U Self-traveling lifting fully-hydraulic coal auger |
| 01/18/2012 | CN102322260A Waterproof and explosion-proof digital control type multifunctional unmanned mining machine |
| 01/11/2012 | CN202108511U Floor-based coal mining unit with anti-skid device |
| 01/04/2012 | CN102305070A Cutting speed regulating system and development machine |
| 01/04/2012 | CN102305068A Development machine |
| 01/04/2012 | CN102305066A Coal mining machine and cutting roller device |
| 01/04/2012 | CN101887273B Automatic height-adjusting test device of coal mining machine roller and control method |
| 01/04/2012 | CN101793149B Speed reducer and development machine comprising same |
| 12/21/2011 | CN102287186A 一种采煤机自主定位系统及其自主定位方法 An autonomous and self-positioning method Positioning System Shearer |
| 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 |
| 12/14/2011 | CN202073563U 用于薄煤层采煤机的截煤机构 Cut for thin seam coal shearer agency |
| 12/14/2011 | CN202073562U 采煤机截割装置 Shearer cutting device |
| 12/14/2011 | CN102278424A 巷用掘进机截割减速机 Roadway with roadheader cutting gear |
| 12/14/2011 | CN102278111A 一种掘进机星轮驱动装置和掘进机 One kind of boring machine star wheel drive and boring machines |
| 12/07/2011 | CN202065454U 采煤机摇臂减速箱体外冷却循环系统 Shearer rocker gear box outside the cooling system |
| 12/07/2011 | CN202064948U Ultra-low surface full hydraulic drilling type coal mining machine |
| 12/07/2011 | CN102268991A 动力变速掘进机 Power shift roadheader |
| 11/30/2011 | CN202055822U 一种切割头式短壁采煤机 A cutting-head short wall Shearer |
| 11/23/2011 | CN202047818U Small-power coal mine tunneling machine cutting speed reducer |
| 11/16/2011 | CN202039849U Electrodynamic impulse type cutting device of excavating machine |
| 11/16/2011 | CN202039847U Hydraulic impulse type cutting device |
| 11/09/2011 | CN202031597U Development machine and slewer thereof |
| 11/09/2011 | CN202031594U Roadheader and slewing gear thereof |
| 11/09/2011 | CN202031593U Hydraulic motor driven mining underground coal plough |
| 11/09/2011 | CN202031587U Rocker arm of double cutting motors of coal mining machine |
| 10/26/2011 | CN202017488U Electric traction coal mining machine powered by using high voltage of 6,000V |
| 10/19/2011 | CN202012349U Block coal cutting machine |
| 10/19/2011 | CN202012346U Coal mining device and roller electric speed control system thereof |
| 10/13/2011 | WO2011059349A3 Method for mounting a ranging arm on a body of a longwall shearer loader |
| 10/12/2011 | CN102213097A Self-propelled surface milling machine with electrical mill roll drive |
| 09/28/2011 | CN201991528U 一种硬岩掘进机伸缩装置 One kind of TBM telescopic device |
| 09/28/2011 | CN102200011A Cutting head type short wall coal mining machine |
| 09/22/2011 | US20110227397 Mining machine with driven disc cutters |
| 09/21/2011 | CN201982094U 一种无键联接液压回转气动冲击凿岩机 A non-pneumatic shock coupling hydraulic rotary drilling machine |
| 09/21/2011 | CN201982093U 一种采煤机液压系统 One kind shearer hydraulic system |
| 09/21/2011 | CN201982092U 电牵引采煤机调高液压系统 Electrical Traction Shearer Hydraulic System |
| 09/14/2011 | CN201972703U 带有凿岩机的新型挖掘装载机 The new backhoe loader with rock drill |
| 09/14/2011 | CN102182816A Connecting structure and connecting process of gear ring and housing of speed reducer of cutting part of coal excavator |
| 09/09/2011 | WO2011109050A2 Electric drive vehicle, system and method |
| 08/31/2011 | CN102168698A Valve plug of height adjustment reversing valve and girth welding process thereof for height adjustment system of coal mining machine |
| 08/31/2011 | CN102168558A Self-walking lifting full-hydraulic auger coal mining machine |
| 08/31/2011 | CN102168557A Spinning coal mining machine |
| 08/31/2011 | CN102168555A Ultralow surface full-hydraulic drill type coal mining machine |
| 08/24/2011 | CN102162266A Numerically controlled three-degree-of-freedom coordinated control electric drive system for large-sized mining excavator |
| 08/17/2011 | CN201934099U 一种连续采煤机及其截割减速器 A continuous Shearer and cutting reducer |
| 08/03/2011 | CN201915961U 单滚筒爬底板采煤机牵引部的传动装置 Single drum climbing gear plate shearer traction unit |
| 08/03/2011 | CN201915960U 综合采煤设备及其采煤机 Integrated mining equipment and Shearer |
| 07/27/2011 | CN201908654U Cutting part of single-roller floor-based shearer |