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)
03/2013
03/13/2013CN202788835U Transmission system of variable frequency speed-regulating chainless electric traction coal mining machine
03/06/2013CN202768612U Coal cutter cutting motor torque shaft
03/06/2013CN202767987U Heading machine and internal oil cylinder for rotation of heading machine
03/06/2013CN202767986U Roadheader and slewing device thereof
03/06/2013CN202767985U Rotating platform structure and heading machine with same
03/06/2013CN102953728A Split type cutting device of coal cutter
02/2013
02/28/2013WO2013028558A2 All electric powered mobile jumbo drill machine
02/28/2013CA2844104A1 All electric powered mobile jumbo drill machine
02/27/2013CN202755973U Height-adjusting device of coal cutter
02/14/2013WO2013020384A1 Cutting speed regulating system and boring machine
02/14/2013WO2013020382A1 Boring machine and cutting unit therefor
02/13/2013CN202731915U Guide key type double-stretch balancing mechanism of heading machine
02/13/2013CN202731914U Power head and excavating machinery including the same
02/13/2013CN102927208A Cutting reducer for continuous miner
01/2013
01/30/2013CN202708025U Cutting reduction box of heading machine and heading machine provided with same
01/30/2013CN202707050U Novel mine entry-driving machine auxiliary cutting device
01/30/2013CN102900435A Coal plough
01/24/2013DE102011108016A1 Selbstfahrender Oberflächenfräser Self-propelled surface cutter
01/23/2013CN202690897U Planetary reducer of cutting unit and coal mining machine
01/23/2013CN202690062U Diesel powered full hydraulic continuous stripping machine
01/23/2013CN202690054U Hinged amplitude variable moveable arm mechanism for mining grooving machine
01/23/2013CN202690053U Composite height-adjusting small-roller large-mining height coal cutter
01/23/2013CN202690052U Composite height-adjusting device of composite height-adjusting small-roller large-mining height coal cutter
01/23/2013CN202690051U Self-adapting speed regulating device for heading machine
01/23/2013CN202690050U Cutting part of heading machine
01/23/2013CN202690044U Comprehensive mechanized rock roadway tunneling unit
01/23/2013CN102889081A Combined rotary cut mining machine
01/16/2013CN102877841A Drum-type coal cutter rocker arm
01/09/2013CN202659233U Oil cylinder protection device of all-in-one machine of drilling, crushing, digging and loading
01/09/2013CN102865288A Torque axis of cutting motor of coal mining machine
01/09/2013CN102865072A Eight-meter large-mining-height coal mining machine
01/02/2013CN202645561U Clipping motor fastening device for coal mining machine
01/02/2013CN202645555U Fully-sealed coal roadway heading-anchoring synchronizer
01/02/2013CN202645553U Built-in type cutting transmission device for anchor all-in-one machine
12/2012
12/26/2012CN202628092U Control system for cutting device of driving anchor machine
12/19/2012CN202611698U Main height adjusting arm for composite-height-adjusting-type coal mining machine with small rotary drum and large mining height
12/19/2012CN102828749A Swing rod transmission direct-impact coal shoveling machine
12/05/2012CN202578689U Full-automatic real-time height adjusting device for rocker arm of coal mining machine
12/05/2012CN202578688U Cutting motor mounting structure of coal mining machine and coal mining machine
12/05/2012CN102808619A Twin-motor cutting mechanism of small-sized boring machine
12/05/2012CN102808617A Comprehensive mechanical stone drift digging anchor machine
12/05/2012CN102168558B Self-walking lifting full-hydraulic auger coal mining machine
11/2012
11/28/2012CN202561053U Thrust cylinder of slurry shield heading machine
11/28/2012CN202560219U Coal mining machine swinging arm
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
11/28/2012CN202560215U Large mining height coal mining machine having superposed arms and three drums
11/28/2012CN102797459A Cutting mechanism of excavating machine and excavating machine
11/22/2012CA2835292A1 Apparatus for the milling cutting of rock, minerals or other materials
11/22/2012CA2835172A1 Mining installation for extracting seam-type or mass-deposit mineral materials, and mining machine for the same
11/15/2012WO2012151624A1 Drive system
11/14/2012CN202531165U Digging-loading and breaking device
11/14/2012CN102777177A Cantilever type coal cutter rocking arm
11/14/2012CN102777173A Cantilever type electric traction coal cutter
11/07/2012CN202520307U Automatic electric traction device of coal mining machine
10/2012
10/31/2012CN202510118U Rotary device and drilling loader provided with the same
10/31/2012CN102200011B Cutting head type short wall coal mining machine
10/24/2012CN202500564U Rotatable and height-adjustable heading machine type cutting device of three-rotary-drum large-mining-height coal mining machine
10/24/2012CN202500559U Compact type composite height-regulating coal cutter with small drum and large mining height
10/24/2012CN102748459A Cutting reducer for heading machine, as well as heading machine with cutting reducer
10/24/2012CN102748335A Hydraulic system and heading machine
10/17/2012CN102733807A Diesel-power full-hydraulic continuous stripping machine
10/10/2012CN202483571U Automatic height adjusting device of coal mining machine
10/10/2012CN102720491A Self-adapting speed regulating device for tunnel boring machine
10/03/2012CN202467837U Anti-interference hydraulic cylinder for heading machine
10/03/2012CN202467835U Chain-free alternating-current traction coal mining machine
10/03/2012CN102713146A Method for mounting a ranging arm on a body of a longwall shearer loader
10/03/2012CN102704930A Mechanical power bucket mechanism of coal mining robot
10/03/2012CN102704928A Rotatable retractable cutting device for comprehensive mechanized stone head tunneling machine set
10/03/2012CN102704927A Comprehensive mechanization stone drift heading machine set
10/03/2012CN102116151B Continuous miner and cutting speed reducer thereof
09/2012
09/26/2012CN202451154U Coal cutter
09/26/2012CN102691501A Tunneling machine and cutting part thereof
09/19/2012EP2499335A2 Method for mounting a ranging arm on a body of a longwall shearer loader
09/19/2012CN202441374U Transmission mechanism of traction part of coal cutter
09/19/2012CN102678110A Cutting-head type short-wall large-mining-height coal winning machine and comprehensive mechanized coal mining process
09/05/2012CN202418567U Oil anti-leakage structure for rocker arm shaft of coal mining machine
09/05/2012CN102108862B Coal mining equipment and roller electrical speed regulating system
08/2012
08/22/2012CN202391425U Rotary-percussion coal mining machine
08/15/2012CN202381092U Coal cutter
08/15/2012CN202381091U Deflectable cutting device for coal mining machine
08/15/2012CN102635355A Cutting part of tunneling machine
08/08/2012EP1794414B1 A drive for a cutting or grinding machine
08/08/2012CN202370516U Mine heading machine
08/08/2012CN202370515U Positioning device of cutting motor of hard rock heading machine
08/01/2012CN202360722U Combined sealing device of continuous shearer cutting speed reducer
08/01/2012CN202360094U Sliding heading machine
08/01/2012CN202360089U rocker arm and coal mining machine with cutting motor arranged longitudinally
07/2012
07/25/2012CN102606157A Crossbeam device for anchor driving and supporting integrated machine and anchor driving and supporting integrated machine
07/25/2012CN102606155A Method of controlling a miner to cause wobble in the cutting heads
07/25/2012CN102162266B Numerically controlled three-degree-of-freedom coordinated control electric drive system for large-sized mining excavator
07/18/2012CN102587905A Mine tunneller
07/18/2012CN102108865B Hydraulic system of coal mining machine
07/11/2012CN202325507U Automatic oiling device for hydraulic system of coal mining machine
07/11/2012CN102562062A Mining device
07/11/2012CN102003179B Saw blade type cave development machine
07/11/2012CN101709642B Track-type four-arm rock drilling jumbo
07/04/2012CN202300392U 悬臂式掘进机泵站 Roadheader Pumping
07/04/2012CN202300391U Roadheader and rotating device thereof
07/04/2012CN202300390U 悬臂式掘进机回转机构 Roadheader rotating mechanism
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