| Patents for E21D 15 - Props; Chocks (3,432) |
|---|
| 04/04/2012 | CN102400695A 智能防冲击支架装置 Intelligent anti-shock stent device |
| 03/29/2012 | DE102010046390A1 Mine roof support for long wall of coal mining, has screw spindle that is formed without self locking structure such that rotation torque of hydraulic motor of screw spindle is controlled between minimum and maximum supporting forces |
| 03/28/2012 | CN202176347U 一种矿用电液控全自动反冲洗过滤器 Ore electric hydraulic control automatic backwash filter |
| 03/28/2012 | CN202176346U 导向环过焊缝大缸底双伸缩立柱 Bottom guide ring is too large weld Double Telescoping |
| 03/28/2012 | CN102392660A Three-dimensional pressure-relieving supporting method for prolonging service lives of deep soft rock supports |
| 03/28/2012 | CN102392640A Close-range thin coal layer simultaneous mining and parallel transporting method |
| 03/28/2012 | CN101979833B Hydraulic support loading platform |
| 03/28/2012 | CN101526004B Large inclination-angle low-position top coal hydraulic bracket |
| 03/21/2012 | EP2430351A1 Length adjustable member |
| 03/21/2012 | CN202170800U 煤矿液压支架平衡千斤顶用浮动双向锁 Mine hydraulic support jack with floating two-way lock balance |
| 03/21/2012 | CN202170799U 液压支架辅助增压降柱装置 Hydraulic support auxiliary booster drop column device |
| 03/21/2012 | CN102383812A Movable clamping seat for connecting U-shaped steel bracket with individual hydraulic prop |
| 03/21/2012 | CN102383811A Hydraulic valve group protecting device for hydraulic bracket |
| 03/21/2012 | CN101864973B Method and apparatus for safety protection of temporary roof support |
| 03/21/2012 | CN101644155B Hydraulic drill loader |
| 03/21/2012 | CN101526005B Skid shoe type bottom raising mechanism of hydraulic support |
| 03/14/2012 | CN202165100U 煤矿液压支架用三位四通换向阀 Mine hydraulic support with three way valve |
| 03/14/2012 | CN202165099U 矿用液压支柱压力变动警报装置 Mine changes Hydraulic strut pressure warning device |
| 03/14/2012 | CN202165098U 矿用设有通风气道的支架 Mine has a ventilation air channel bracket |
| 03/14/2012 | CN102373933A Resistance-increasing pressure-resisting roadway support |
| 03/07/2012 | EP2425097A2 Pressure relief valve |
| 02/29/2012 | CN102364052A Tubular connected high-flow hydraulic control one-way valve |
| 02/29/2012 | CN102364051A High-flow hydraulic control one-way valve |
| 02/29/2012 | CN101052773B Auxiliary unloading apparatus for supporting element |
| 02/22/2012 | CN202148911U 矿用隔爆兼本安变频恒压智能乳化液泵站 Constant Smart emulsion pump mine explosion-proof and intrinsically safe frequency |
| 02/22/2012 | CN202148910U 一种矿用单体柱支架防倒器 Ore monomers post holder anti-down device |
| 02/22/2012 | CN101906979B 沿空留巷支护方法及其注巷滑模 Supporting method roadways along its left lane Sliding Notes |
| 02/22/2012 | CN101749038B 单体支柱自动卸阀装置 Prop automatic unloading valve device |
| 02/15/2012 | CN202144748U 一种矿用高端液压支架井下装车平台 One kind of high-end hydraulic support underground mining loading platform |
| 02/15/2012 | CN102352760A Increasing and decreasing hydraulic support for mechanized mining working face of thin coal seam |
| 02/15/2012 | CN102352759A Emulsion recovery system |
| 02/15/2012 | CN102022128B 一种气液支柱 A gas-liquid pillar |
| 02/09/2012 | WO2012016272A1 An improved prop for mining, construction and the like |
| 02/08/2012 | CN102345467A U-shaped fastener |
| 02/08/2012 | CN102345466A Telescopic support arm for upper beam |
| 02/08/2012 | CN101718206B 本邻架操作先导换向阀 O The valve operation pilot planes |
| 02/02/2012 | US20120027529 Mine Support Having a Linearly Moveable and/or Pivoting End Plate |
| 02/01/2012 | CN102337910A Fast assembling and disassembling device for support carrier |
| 02/01/2012 | CN102337909A Socket |
| 02/01/2012 | CN102337908A Hydraulic bracket posture detecting method and device based on multi-sensor data fusion |
| 02/01/2012 | CN101560883B 沿空留巷作业模架 Gob - Job mold |
| 01/25/2012 | CN102330560A Mine hydraulic support stand column with tight-pressing resistance device |
| 01/18/2012 | CN202117692U Safety valve with 160L/min rated flow |
| 01/18/2012 | CN202117691U One-way push lock with 500 L/min rated flow |
| 01/18/2012 | CN102322279A Impact resistant mining hydraulic prop cap base and preparation method thereof |
| 01/12/2012 | WO2011063433A3 A pressure indicating device |
| 01/11/2012 | CN202108528U Protection locking device of operation handle for hydraulic support operation valve |
| 01/11/2012 | CN202108527U Floating reversible lock |
| 01/11/2012 | CN202108526U Reversible lock of balance jack |
| 01/11/2012 | CN202108525U Upright post quick release safety valve |
| 01/11/2012 | CN202108524U Safety valve with rated flow being 320L/min |
| 01/11/2012 | CN202108523U Corrosion-proof hydraulic device and corrosion-proof cylinder, plunger of the same |
| 01/11/2012 | CN102312676A Construction method for high face mining support removing passage under complicated geological condition |
| 01/11/2012 | CN101660422B Single hydraulic prop |
| 01/04/2012 | CN202100267U Anti-impact hydraulic support cap shoe for mining |
| 01/04/2012 | CN202100266U Bidirectional lock with secondary protecting side |
| 01/04/2012 | CN202100265U Suspended hydraulic prop easy to load and unload and detaching device thereof |
| 01/04/2012 | CN202100264U Supporting device for supporting engineering of underground narrow tunnels |
| 01/04/2012 | CN101775988B Method for constructing from inclined shaft to main tunnel in weak surrounding rock |
| 12/28/2011 | CN202090935U 液压双向锁 Bidirectional hydraulic lock |
| 12/28/2011 | CN102296973A 单体液压支柱 Hydraulic prop |
| 12/21/2011 | CN202081899U 一种新型端头掩护支架 A new tip Shield Support |
| 12/21/2011 | CN202081898U 液压支架操作手柄闭锁装置 Hydraulic support operating handle locking device |
| 12/21/2011 | CN202081897U 具有警示功能的易拆装矿用单体液压支柱 With a warning function of easy disassembly mine hydraulic prop |
| 12/21/2011 | CN101906982B Two-stage side guard transition bracket for large height mining face |
| 12/21/2011 | CN101660423B 单体液压支柱浮动式导向套 Hydraulic prop floating guide sleeve |
| 12/14/2011 | CN202073579U 锻造柱窝及液压支架 Nest and forging hydraulic support column |
| 12/14/2011 | CN202073578U 液压支架柱窝 Hydraulic support column nest |
| 12/14/2011 | CN202073577U 整体式拉后溜链盒及液压支架 After pulling slip integral chain box and hydraulic support |
| 12/14/2011 | CN202073576U Zy3400/14/32型支架底座挡煤板 Zy3400 / 14/32-type pedestal base block coal board |
| 12/14/2011 | CN202073575U 综采工作面液压支架的可调式防滑踏板 Longwall Face bracket adjustable non-slip pedals |
| 12/14/2011 | CN202073574U 一种插装式大流量硬密封立柱液控单向阀 One kind of hard Cartridge large flow check valve seal column |
| 12/14/2011 | CN1573014B 液压掩护支架 Hydraulic Shield Support |
| 12/08/2011 | WO2011151687A1 Grout pack restraining envelope |
| 12/07/2011 | CN202064972U 矿用可调定向支撑机构 Mine directional adjustable support mechanism |
| 12/07/2011 | CN202064971U 一种插装式中流量立柱液控单向阀 One kind of plug-in check valve flow column |
| 12/07/2011 | CN202064970U 一种大流量安全阀 One kind of high flow valve |
| 12/07/2011 | CN202064969U 多级受力、蜗杆传动式矿用螺旋支柱 Multi-level force, worm drive type spiral pillar mining |
| 12/07/2011 | CN202064968U 工字钢支柱系统 Beam pillar system |
| 12/07/2011 | CN102269000A 膏体充填支护一体化液压支架的前架 Supporting the integration of paste filling hydraulic support the front frame |
| 12/06/2011 | US8070394 Versatile grout bag type of underground support |
| 11/30/2011 | CN202055849U 用于液压立柱的拆柱机 Column hydraulic demolition column machine |
| 11/30/2011 | CN202055848U 用于煤矿井下液压支架的截止阀 Shut-off valves for hydraulic support coal mine |
| 11/30/2011 | CN202055847U 大流量安全阀 High flow valve |
| 11/30/2011 | CN202055846U 单体液压支架的活柱 Single hydraulic plunger bracket |
| 11/30/2011 | CN202055845U 一种单体液压支柱 One monomer hydraulic prop |
| 11/30/2011 | CN202055844U 无线监控综采液压支架 Wireless monitoring of hydraulic support |
| 11/30/2011 | CN202055843U 矿用单体液压支柱 Mine hydraulic prop |
| 11/30/2011 | CN101899987B 一种煤矿巷道深层支护施工方法 One kind of deep mine roadway support construction method |
| 11/23/2011 | CN202047848U One-way lock |
| 11/23/2011 | CN202047847U Single action water spray valve |
| 11/23/2011 | CN202047846U Inserted hard-sealed manual reversing valve with automatic resetting device |
| 11/23/2011 | CN202047845U Dual hydraulic control one-way valve |
| 11/23/2011 | CN202047844U Telescopic girder unidirectional lock |
| 11/23/2011 | CN202047843U Alternating bidirectional control valve |
| 11/23/2011 | CN202047842U Side-wall protection bidirectional lock |
| 11/23/2011 | CN202047841U Floating reversible lock |
| 11/23/2011 | CN202047840U Plug-in type hard seal manual reversing valve |
| 11/23/2011 | CN202047839U Floating reversible lock with pressure |
| 11/23/2011 | CN202047838U Liquid return shut-off valve |