| Patents for E21D 15 - Props; Chocks (3,432) |
|---|
| 05/04/2011 | CN101586465B Construction method of large-diameter coal bunker flat-topping lid |
| 05/04/2011 | CN101333927B High pressure setting system without high-pressure pump and its method for controlling high pressure setting |
| 04/27/2011 | CN201810325U Solid filling end bracket |
| 04/27/2011 | CN102031979A Assembling mechanism of guide sleeve of column of hydraulic support |
| 04/27/2011 | CN101245708B Magnetic rheologic pilot-operated reversing valve for hydraulic support |
| 04/20/2011 | CN201802419U Safety valve with pressure balancing cavity |
| 04/20/2011 | CN201802418U Fixing device for roadway support I-steel supporting plate back leg falling prevention device |
| 04/20/2011 | CN201802417U Anti-fall device for adjusting columnar legs of U-shaped steel bracket plate of roadway support |
| 04/20/2011 | CN201802416U Mining anticorrosion single hydraulic prop |
| 04/20/2011 | CN201802415U Suspended individual hydraulic prop with split handle valve body |
| 04/20/2011 | CN102022128A Gas and liquid strut |
| 04/20/2011 | CN102022122A Support-type comprehensive tunneler |
| 04/13/2011 | CN201795249U Hydraulic leg guide pillar structure |
| 04/13/2011 | CN201794597U Pillar with protective tube and auxiliary handlebar |
| 04/13/2011 | CN102011595A Coal rock tunnel impact retraction energy-absorbing support device |
| 04/13/2011 | CN101550834B Automatic boost-type setting load guaranteeing device |
| 04/06/2011 | CN201786366U Hydraulic support for upper end head of coal face with large inclination angle |
| 04/06/2011 | CN201786365U Hydraulic telescopic bracket for borehole coal mine |
| 04/06/2011 | CN201786041U Steel support |
| 04/06/2011 | CN201785879U Steel support fixed end |
| 04/06/2011 | CN102003188A Method for supporting triangular area in coal mine support-dismantling process |
| 03/30/2011 | CN201778831U Prop extractor for individual hydraulic prop |
| 03/30/2011 | CN201778830U Disassembling and assembling machine for hydraulic support |
| 03/30/2011 | CN201778829U Hydraulic bracket disassembly and assembly vehicle |
| 03/30/2011 | CN201778828U Rotary disk type hydraulic bracket mounting machine |
| 03/30/2011 | CN201778827U Hydraulic support mounting truck |
| 03/30/2011 | CN201778826U Double-splint butting type high-resistant high-compressible connector |
| 03/30/2011 | CN101994728A Manual pilot combined operating valve for hydraulic support |
| 03/30/2011 | CN101994515A Anti-impact box for supporting pole of mine |
| 03/30/2011 | CN101994514A Bidirectional hydraulic landing leg rod |
| 03/24/2011 | WO2011032525A1 Pressure limiting valve for large connection widths |
| 03/23/2011 | EP2299032A2 Pressure-applying telescopic spacer |
| 03/23/2011 | CN201771531U Push rod adjusting jack for inclined and steeply inclined fully mechanized mining hydraulic bracket |
| 03/23/2011 | CN201771521U Connecting and positioning device of upright post and top beam |
| 03/23/2011 | CN201771520U Remote monitoring high-pressure water injection system |
| 03/23/2011 | CN201771519U Hydraulic control one-way valve with pressurization function |
| 03/23/2011 | CN201771518U Stair specialized for single column of fully mechanized coal mining face |
| 03/22/2011 | US7909542 Mine support |
| 03/16/2011 | CN201763369U Hydraulic support automatic spraying dust suppression system |
| 03/16/2011 | CN201763363U Portable pneumatic emulsion pump station |
| 03/16/2011 | CN201763362U Single hydraulic prop for mining use |
| 03/16/2011 | CN201763361U Antislip base-type support |
| 03/16/2011 | CN201763360U Long stroke strut |
| 03/16/2011 | CN101985885A Traction machine for removing coal-mine hydraulic support |
| 03/09/2011 | CN201756972U Single shield type hydraulic brace |
| 03/09/2011 | CN201756971U Single hydraulic brace with easy detachment of base and handgrip |
| 03/09/2011 | CN101984221A Suspended hydraulic column |
| 03/09/2011 | CN101984220A Double flexible suspension hydraumatic upright column |
| 03/09/2011 | CN101984219A Suspended multi-telescopic hydraulic column |
| 03/09/2011 | CN101984218A Floated single hydraulic strut with protective cover |
| 03/03/2011 | US20110052334 Apparatus and method for supporting a mine rib |
| 03/02/2011 | CN201753608U Oil cylinder in mine excavating and fully mechanized support |
| 03/02/2011 | CN201753607U Span-reducing pier column structure of large-section underground chamber |
| 03/02/2011 | CN101982629A Assembly-type self-compaction steel tube and concrete composite structure |
| 03/01/2011 | CA2714191A1 Apparatus and method for supporting a mine rib |
| 02/23/2011 | CN101979833A Hydraulic support loading platform |
| 02/16/2011 | CN201747391U Two-stage lateral protection transition bracket of large mining height working surface |
| 02/16/2011 | CN201747388U Middle injection single body hydraulic support |
| 02/16/2011 | CN201747387U Roadway supporting bracket |
| 02/16/2011 | CN201747386U Periphery-protecting small four-bar mechanism |
| 02/16/2011 | CN101975072A Recovery method of common combined mining working face hydraulic support |
| 02/09/2011 | CN201738938U Binding type pressure box used for U shaped steel rack in mines |
| 02/09/2011 | CN201738937U Portable single hydraulic prop pumping station system |
| 02/02/2011 | CN201730631U Multi-purpose single prop hydraulic dismounting machine |
| 02/02/2011 | CN201730630U Welding-free I-shaped steel column cap |
| 02/02/2011 | CN201730629U Split type handle valve body |
| 01/26/2011 | CN201723234U Underground work surface hydraulic support frame dismounting and installing work station for mines |
| 01/26/2011 | CN201723233U Mine ground pressure indicating device |
| 01/26/2011 | CN201723232U Three-dimensional contractible roadway metal combined support |
| 01/26/2011 | CN101956559A Four-purpose valve for single hydraulic prop |
| 01/19/2011 | CN201714405U Cylinder with inner hole having corrosiveness resistance |
| 01/19/2011 | CN201714404U Large-flow safety valve |
| 01/19/2011 | CN201714403U High-flow rigid-seal plug-in type hydraulic control one-way valve |
| 01/19/2011 | CN201714402U Large-flow liquid supply valve |
| 01/19/2011 | CN201714401U Thin seam hydraulic support spraying device |
| 01/19/2011 | CN201714400U Anticorrosion prop |
| 01/19/2011 | CN201714399U Single hydraulic prop |
| 01/19/2011 | CN201714398U Rapidly-lifting single hydraulic prop |
| 01/19/2011 | CN201714397U Mine screw type shield-support scaffold |
| 01/19/2011 | CN101566066B High-intensity hydraulic support pipe with wall thickness of 60mm-70mm |
| 01/13/2011 | US20110006586 Longwall mining roof supports |
| 01/12/2011 | CN201705376U Special hydraulic support for underground coal mine filling and production |
| 01/12/2011 | CN201705371U Tractor for withdrawing support on fully mechanized mining face |
| 01/12/2011 | CN201705370U Paste baffle structure for paste filling and supporting integrated hydraulic support |
| 01/12/2011 | CN1619105B Apparatus for safety protection of temporary roof support |
| 01/12/2011 | CN101943010A Remote-monitoring high pressure water injection system |
| 01/12/2011 | CN101943009A Plate-typed draw ring used for connecting draw rods on tunnel metal support |
| 01/12/2011 | CN101943008A Pillar reinforcement method of reclaim residual mine |
| 01/05/2011 | CN201696064U Hydraulic support assembling machine |
| 01/05/2011 | CN201696063U Hard-soft energy-absorbing coupling monomer bracket device |
| 01/05/2011 | CN201696062U Novel brace for suspended top beam hydraulic support |
| 01/05/2011 | CN201696061U Novel mine monomer hydraulic prop |
| 01/05/2011 | CN201696060U Small support point full protection type roadway support |
| 01/05/2011 | CN201696059U Mining plunger type upright column |
| 01/05/2011 | CN201696058U Interlocker of anti-falling device |
| 01/05/2011 | CN101936176A Hydraulic bracket assembling machine |
| 01/05/2011 | CN101936172A Governance method of floor heave of mine roadway during mining |
| 01/05/2011 | CN101936171A Hydraulic support and surrounding rock coupling three-dimensional dynamic design method |
| 01/05/2011 | CN101514633B Non-roadside supporting gob-side entry retaining process |
| 12/29/2010 | CN201687499U Rear frame of paste filing and supporting integrative hydraulic support |