Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21D - Shafts; Tunnels; Galleries; Large underground chambers › E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection
Patents for E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377)
12/2012
12/19/2012CN202611729U Steel strand anchor rod
12/19/2012CN102828761A Full-thread glass fiber composite hollow grouting anchor rod
12/19/2012CN102828760A Pre-stress spiral rib hollow grouting anchor rope
12/18/2012CA2631477C Friction tube anchor and inflation adapter for the latter
12/16/2012CA2775548A1 Anchor screw
12/13/2012WO2012167308A1 Improvements in self-drilling rock bolts
12/12/2012CN202596761U Shoulder protecting type steel belt
12/12/2012CN202596760U Multi-stage sectioned grouting-free self-anchoring ratchet type anchor rod
12/12/2012CN202596759U Multi-stage subsection grouting-free self-swelling tight type anchoring rock bolt
12/12/2012CN202596758U Safety protection device of anchor cable
12/12/2012CN202596757U Tube seam type anchor rod tension gauge connector
12/12/2012CN202596756U Shell-expanding high-strength grouting bolt
12/12/2012CN102817625A Anchor cable loader transporter
12/12/2012CN102816971A Ultra high strength anchor pile with impact energy more than 100 J and manufacturing process thereof
12/12/2012CN102182481B Anchor rope grouting-stop plug
12/12/2012CN102146797B Short-section temporary gob-side entry retaining method
12/11/2012CA2543755C Detachable anchor bolt mixing head for use in mine roof support systems and method of using same
12/08/2012CA2777995A1 An adhesive containing tubular rock anchor
12/06/2012WO2012012401A3 Anchoring device
12/06/2012US20120308310 Friction bolt
12/05/2012CN202578735U Anti-flaming fiber reinforced plastic anchor rod with film
12/05/2012CN202578734U Flame-retardant fiber reinforced plastic anchor rod
12/05/2012CN202578733U Fiber reinforced plastic anchor rod with joint
12/05/2012CN202578732U Full-thread fiber reinforced plastic anchor rod
12/05/2012CN202578731U Antistatic fiber reinforced plastic anchor rod with film
12/05/2012CN202578730U Eccentric composite tray
12/05/2012CN1922386B Coated mining bolt
12/05/2012CN102808647A Split full-automatic disaster prevention device of coal mine
12/05/2012CN102808646A Upward-opening full-automatic disaster prevention device of coal mine
12/05/2012CN102808645A Enhanced fully-automatic disaster plugging and preventing device for mine
12/05/2012CN102808641A Compression resistant air door in underground mine
12/05/2012CN102808636A Supporting method of large-section tunnel in water-rich complicated geological mass
12/05/2012CN102808635A Expanding shell type inner anchor head pre-stressed anchor rod and installation using method thereof
12/05/2012CN102808634A Hydraulic coupling anchor bolt
11/2012
11/29/2012US20120301228 Rock Bolt
11/28/2012EP2527589A2 Rock bolt
11/28/2012CN202560277U Antistatic fiber reinforced plastic anchor
11/28/2012CN202560276U Pipe seam type anchor rod sleeved with aerogel pipe for supporting
11/28/2012CN202560275U B-shaped steel belt for anchorage
11/28/2012CN202560274U Anchor bolt plate capable of assisting in mine pressure observation
11/28/2012CN202560273U Anchor bolt/anchor cable fall-off preventing frame
11/28/2012CN202560272U Flexible anchor pole
11/28/2012CN202559349U Metal wire composite type fiber reinforced plastic anchor rod
11/28/2012CN202559348U Full-thread fiber reinforced plastic hollow anchor rod
11/28/2012CN202559347U Inflaming retarding type hollow fiber reinforced plastic anchor rod with film
11/28/2012CN1840924B Torque nut having an injection molded breakaway insert
11/28/2012CN102803654A Nchoring bolt having an extruding piston
11/28/2012CN102797491A System and method for monitoring dynamic disaster of coal mine with fiber bragg gratings
11/28/2012CN102797487A Anchor bolt
11/28/2012CN102140924B Double-shell coupling supporting method of deep soft rock tunnel
11/28/2012CN101967984B Deep well tunnel cable anchor rigid-flexible coupling support and surrounding rock overall reinforced support method
11/27/2012CA2677759C An elongate element tensioning member
11/27/2012CA2525458C Controlled expansion of rock bolt
11/22/2012US20120294680 Device and method for anchoring a cable bolt
11/21/2012CN202544884U Simple, quick and reliable anchor rod
11/21/2012CN202544883U Self-boring full thread hollow grouting anchor rod
11/21/2012CN202544882U Self-adaption crush anchor rod tray
11/21/2012CN202544881U Grouting pipe for grouting anchor cable
11/21/2012CN202544880U Anchor rope clamping piece
11/21/2012CN202544879U High-strength roadway support device
11/21/2012CN202544878U Spiral rib grouting anchor cable
11/21/2012CN202544873U Front canopy type temporary supporting suspension device for anchor pole supporting tunnel construction
11/21/2012CN102787856A Permanent supporting method of weak cementation soft rock roadway
11/21/2012CN102787855A Excavating and supporting method of roadway containing quicksand layer
11/21/2012CN102787854A Forepoling method used in tunneling of weak cemented soft rock roadway
11/20/2012CA2677760C An elongate element tensioning member
11/14/2012CN202531200U Three-blade anchor bolt drilling tool
11/14/2012CN102777197A Overall cementation type anchor rod with tensioning pull rod
11/14/2012CN102777196A Complementary supporting method of zoom backstopping roadway
11/14/2012CN102777195A Single steel strand anchor cable unit and orifice yielding device thereof
11/14/2012CN102777126A Drilling apparatus, method, and system
11/14/2012CN101845959B Anchor rod
11/13/2012CA2740183A1 Device and method for anchoring a cable bolt
11/07/2012CN202520750U Conversion nut and coarse-pitch threaded rod, anchor rod and anchor rod steel bar comprising same
11/07/2012CN202520346U Novel high-intensity constant-resistance large-deformation anchor rod
11/07/2012CN202520345U High-strength constant resistance extending device for anchor cable
11/07/2012CN202520344U Anchoring force enhancing device for anchor rod
11/07/2012CN202520343U Anchor rope with stirring spring
11/07/2012CN202520342U Automatic anchor rod production line
11/07/2012CN202520341U Rapid anchor rod supporting platform matched with tunneling machine
11/07/2012CN102767386A Anchor rod scour-prevention yielding component and processing and usage method of component
11/07/2012CN102767385A Tension self-locking device for grouting anchor cable
11/07/2012CN102108874B Tensile cross grouting anchor rod device
11/07/2012CN101784752B Rock bolt with mechanical anchor
11/01/2012WO2012146062A1 Construction method for indirectly heating recoverable anchors and cavity anchor and high-pressure heater used in the same
10/2012
10/31/2012DE102011017665A1 Ankerstange Anchor rod
10/31/2012CN202510149U Anchor cable end protecting bush
10/31/2012CN202510148U Shoulder protector type W-type steel band
10/31/2012CN202510030U Vehicle multipurpose roofbolter
10/31/2012CN102094675B Safe moving and withdrawing method of complex-structured thick coal seam fully mechanized heavy equipment
10/31/2012CN101982644B Continuously progressive yielding anchor plate
10/25/2012DE102011018241A1 Method for manufacturing anchor setting process with capsule-sleeve mill, involves pushing capsule pipe together with capsule-sleeve mill on anchor head, with rotation movement of anchor head into anchor bore
10/24/2012CN202500592U Novel vertical-load deformed steel bar
10/24/2012CN202500591U Resistance-increasing and yielding anchor pole
10/24/2012CN202500590U Preliminary anchor pipe
10/24/2012CN202500589U Ladder beam for anchor rod support
10/24/2012CN202500581U Three-dimension asymmetric supporting system
10/24/2012CN202500580U Spraying anchorage structure
10/24/2012CN102748048A Hole wall grouting anchor cable
10/24/2012CN102748047A Expansion-shell anchor rope
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