Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21C - Mining or quarrying › E21C 35 - Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups , or
Patents for E21C 35 - Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups , or (6,127)
12/2012
12/05/2012CN202578752U Control device of automatic spraying system of coal mining machine
12/05/2012CN202578698U Novel thin seam coal mine downhole mining complete equipment
12/05/2012CN202578697U High-power automatic coal cutter with memory cutting function for thin coal layers
12/05/2012CN202578696U Rocker arm inner spraying device of coal mining machine and coal mining machine
12/05/2012CN202578695U U-shaped connection device of heading machine shovel board portion
12/05/2012CN202578694U Double-arm waste rock discharging system
12/05/2012CN202578693U Multi-tooth tool of coal mining machine
12/05/2012CN202578692U Protecting structure of hard alloy for conical bits
12/05/2012CN202578691U Pedal device and mechanical equipment equipped with same
12/05/2012CN202578690U Heading machine and anchor protection platform thereof
12/05/2012CN202578685U Coal plough and plough head adjusting system thereof
12/05/2012CN202578682U Heading machine second conveyer rotation structure and heading machine
12/05/2012CN202578681U Comprehensive rock roadway driving system
12/05/2012CN202578678U Heading machine provided with winch
12/05/2012CN102812206A Bit, In Particular A Round Shaft Bit
12/05/2012CN102808620A Heading machine control system based on STM (Synchronous Transmission mode) 32
12/05/2012CN102808617A Comprehensive mechanical stone drift digging anchor machine
12/05/2012CN102031968B Tunnelling and shoring integrated machine and telescopic boom thereof
12/05/2012CN101975069B Automatic telescopic crushing device for tunnelling machine
12/04/2012US8322796 Seal with contact element for pick shield
12/04/2012US8322795 Miner cutting bit holding apparatus
11/2012
11/29/2012WO2012072786A3 Chisel holder
11/29/2012WO2012072785A3 Chisel holder
11/29/2012WO2012072783A3 Chisel holder and lower tool part for a chisel holder
11/29/2012DE102010033733B4 Vorrichtung zur Konvergenzerfassung in Strebbetrieben des untertätigen Steinkohlenbergbaus Apparatus for detecting convergence in longwall operations under the active coal industry
11/28/2012EP2525930A2 Pick tool and method for making same
11/28/2012CN202560308U Respirator for heading machine
11/28/2012CN202560230U High-pressure spraying dust elimination system of excavation device
11/28/2012CN202560229U Transshipment machine
11/28/2012CN202560228U H-key connection structure of tunneling machine
11/28/2012CN202560227U Rotary harrowing device
11/28/2012CN202560226U Composite cutting tooth with alloy cylinders inserted in shoulder portion
11/28/2012CN202560225U Cutting tooth holder with clamping groove
11/28/2012CN202560224U Special guider for coal mining machine
11/28/2012CN202560223U Locking suspending connection structure of main side shoveling plate of tunneling machine
11/28/2012CN202560222U Post-stabilization device for split-type roadheader unit
11/28/2012CN202560221U Main body of entry driving machine and the entry driving machine
11/28/2012CN202560220U Water-cooling system monitoring device and heading machine provided with the same
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
11/28/2012CN102797463A Method for determining automatic coal cutting trajectory of coal cutter with working surface passing arc fold
11/28/2012CN102797462A Automatic cutting control system and automatic cutting control method for coal cutter
11/28/2012CN102797461A Method and system for monitoring the operation of cable shovel machine
11/28/2012CN102795449A Transfer machine middle groove and transfer machine
11/28/2012CN101532391B In-hole drilling tool integrating drilling, slotting and punching coal seam and using method thereof
11/22/2012WO2012155163A2 Arrangement for fixing a cutter
11/22/2012WO2012072802A3 Chisel holder, and chisel holder system comprising a chisel holder and a base part
11/22/2012WO2012072801A3 Chisel holder, and chisel holder system comprising a chisel holder and a base part
11/22/2012CA2835183A1 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
11/21/2012CN202544847U Cutting pick
11/21/2012CN202544846U Auger bit with polygonal shoulder and shank with convex plates
11/21/2012CN102787842A Connecting device and complete equipment of scrapper conveyer
11/21/2012CN102785962A Novel height-adjustable towing device
11/21/2012CN101778998B Method and device for monitoring a cutting extraction machine
11/21/2012CN101684730B Rotary cutting bit
11/20/2012US8313153 Rotatable cutting tool and tool holder assembly
11/15/2012WO2012151624A1 Drive system
11/15/2012US20120286559 Streamlining bit assemblies for road milling mining and treching equipment
11/15/2012US20120285293 Composite sintered powder metal articles
11/14/2012CN202531172U Adjustable spraying support used for dust control on shaft mechanized excavation face
11/14/2012CN202531171U Hydraulic dinting cleaning and transporting machine
11/14/2012CN202531170U Drive device for conveyor of tunneling machine
11/14/2012CN202531169U Guide wheel protection device for scraper bucket rock loader
11/14/2012CN202531168U Inner spraying system in cutting head of heading machine
11/14/2012CN202531167U Novel coal mining machine cutting pick
11/14/2012CN202531166U Heading machine support leg
11/14/2012CN1701161B Rotary cutting bit with material-deflecting ledge
11/14/2012CN102782253A Extraction system for a mineral cutter pick
11/14/2012CN102778271A Flexible oil pointer for mining coal cutter
11/14/2012CN102777184A Mining system and method of mines
11/14/2012CN102777178A Manned bin of thin seam coal mining machine
11/14/2012CN102777177A Cantilever type coal cutter rocking arm
11/14/2012CN102777173A Cantilever type electric traction coal cutter
11/13/2012CA2554654C Rotary cutting bit
11/08/2012WO2011144194A3 Nozzle for a water-mist sprayer
11/08/2012WO2011144193A3 Device for water-mist sprinkling
11/08/2012US20120280559 Casing Block
11/08/2012US20120280558 Foam Configured to Suppress Dust on a Surface to be Worked
11/07/2012CN202520312U Novel slag-raking machine with belt transferring machine
11/07/2012CN202520310U Connecting structure for tunneling machine and transferring machine
11/07/2012CN202520307U Automatic electric traction device of coal mining machine
11/02/2012CA2775868A1 Straight taper dipper
11/01/2012WO2011116405A3 Arrangement for detecting the load of a chisel of cutting machines
11/01/2012US20120274123 Mineral Winning Pick, Pick Box and Combination
10/2012
10/31/2012CN202510120U Automatic integrated control system for thin coal seam shearer working surface
10/31/2012CN202510119U Hoop for fastening shaft ends of electric shovel push big shaft
10/31/2012CN102758628A Passive wireless operation keyboard and operating method for mine mining machinery
10/31/2012CN102758627A Chute following mechanism of first conveyer of heading machine
10/31/2012CN102758626A Low-height redirection mechanism ultra-thin conveying rolling-raking loader
10/31/2012CN102758625A Material rolling-raking loader and material rolling-raking loading method
10/31/2012CN102758624A Material rolling and raking device
10/31/2012CN102200011B Cutting head type short wall coal mining machine
10/26/2012WO2012143153A2 Cutting bit and bit holder
10/25/2012US20120267940 Material guide assembly
10/24/2012EP2514918A1 Cutting bit and bit holder
10/24/2012CN202500566U Strip mine shovel mining dust fall device
10/24/2012CN202500565U Stabilizer of comprehensive mechanized stone drift heading machine
10/24/2012CN202500563U Rear-support rotation mechanism of second conveyor of heading machine and engineering machine
10/24/2012CN202500561U Mine driving loader
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