| Patents for E21D 19 - Provisional protective covers for working space (559) |
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| 02/19/2015 | US20150050088 Tunneling or extraction machine with an anchor-setting device and support manipulator or supporting device |
| 02/11/2015 | CN204152428U 一种窄机身四臂锚杆锚索钻车 A narrow fuselage four drill arm bolt and cable cars |
| 02/11/2015 | CN102493823B 矿用可回收钢筒填料墩柱及构筑法和用于沿空留巷的方法 Mine recyclable steel tube filler pier and construction method and Gob - method for |
| 01/14/2015 | CN204098940U 一种用于液压支架的帮顶支护装置 An apparatus for supporting Bangding hydraulic support |
| 01/07/2015 | CN104265337A 掘进临时支护装置 Driving temporary support device |
| 01/07/2015 | CN104265336A 煤矿井下用无卤阻燃抗静电聚酯网假顶及其制备方法 Coal mine with flame retardant antistatic polyester mesh roof off its preparation method |
| 01/07/2015 | CN104265166A 一种配套连续采煤机使用的八臂全液压锚杆锚索钻车 Supporting the continuous miner to use one kind of eight-arm hydraulic drill bolt and cable cars |
| 12/31/2014 | CN204060743U 采煤掘进巷道气垛式前探梁临时支护装置 Former coal mining roadway gas exploration Crib temporary support beam device |
| 12/31/2014 | CN204059405U 一种正压式组合工棚 One kind of a combination of positive pressure shed |
| 12/30/2014 | US8920074 Underground mining apparatus |
| 12/24/2014 | CN204040898U 一种配套连续采煤机使用的八臂全液压锚杆锚索钻车 Supporting the continuous miner to use one kind of eight-arm hydraulic drill bolt and cable cars |
| 12/24/2014 | CN102704927B 一种综合机械化岩巷掘进机组 An integrated mechanized units Rock Roadway |
| 12/17/2014 | CN204024682U 假顶带抖带装置 Shake off the top with a belt device |
| 12/17/2014 | CN204024470U 一种窄机身六臂全液压锚杆锚索钻车 A narrow fuselage six-arm hydraulic drill bolt and cable cars |
| 12/17/2014 | CN204024469U 一种配套连续采煤机使用的六臂全液压锚杆锚索钻车 Supporting the continuous miner to use one kind of six-arm hydraulic drill bolt and cable cars |
| 12/17/2014 | CN103061806B 一种复合顶板薄煤层综采工作面沿空留巷方法 A composite roof Thin Seam Mining Face method for Gob |
| 12/10/2014 | CN204002873U 矿用前探支护装置 Supporting device before mining exploration |
| 12/10/2014 | CN204002872U 顶板临时支护及防片帮支架装置 Temporary roof support and anti-spalling stent device |
| 12/10/2014 | CN104196446A 一种配套连续采煤机使用的六臂全液压锚杆锚索钻车 Supporting the continuous miner to use one kind of six-arm hydraulic drill bolt and cable cars |
| 12/10/2014 | CN104196443A 一种窄机身六臂全液压锚杆锚索钻车 A narrow fuselage six-arm hydraulic drill bolt and cable cars |
| 08/06/2014 | CN203756201U 一种钢筋网联网器 A reinforcement mesh networking device |
| 08/06/2014 | CN203756199U 一种安全性能高的液压支架 High safety performance of a hydraulic support |
| 07/30/2014 | CN103953373A 巷道顶板高冒区临时支护装置 Roof Caving Region temporary support device |
| 07/23/2014 | CN203730025U 迎面安全推手 Head security push hands |
| 07/23/2014 | CN203729992U 一种用于掘进机的载有锚护装置的截割部 Cutting unit contains anchor retaining device for a roadheader |
| 07/16/2014 | CN102635353B 双悬臂硬岩煤巷掘锚装备 Double cantilever hard rock coal roadway excavation equipment anchor |
| 06/25/2014 | CN203669905U 一种液压自动带网与上木料装置 A hydraulic automatic device with network and on wood |
| 06/25/2014 | CN203669899U 一种用于隔离工作面后方巷道与采空区的条带钢筋网 A Face in isolation behind bars and goaf roadway with steel mesh for |
| 06/25/2014 | CN203669898U 滑移式超前支护结构 Skid advance support structure |
| 06/11/2014 | CN203640749U 矿用单轨液压临时支护装置 Hydraulic mining monorail temporary support device |
| 06/11/2014 | CN103850693A Method for controlling high ground stress roadway heaving floor |
| 06/11/2014 | CN102383795B Comprehensive mechanical rock drift excavating process |
| 06/04/2014 | CN203626863U 铺网上绳专用工具 Shop Online rope special tools |
| 06/04/2014 | CN103835736A Head-on safe pushing handle |
| 05/28/2014 | CN203614116U 一种架棚巷道临时支护用防护网装置 One kind of shelf Roadways temporary support device with a safety net |
| 05/14/2014 | CN103790602A 单轨液压临时支护装置 Monorail hydraulic temporary support device |
| 04/30/2014 | CN103758547A Sliding type advanced support structure |
| 04/30/2014 | CN102171412B Method and apparatus for lining tunnel walls or ceilings with protective nets |
| 04/23/2014 | CN203559911U Device for protecting heading face from rib spalling |
| 04/23/2014 | CN103742181A Hydraulic automatic net up-putting and timber loading device |
| 04/23/2014 | CN102587922B Oblique-crossing inclined shaft upper arc guide top brushing construction method for soft crushed rock layer |
| 04/16/2014 | CN102777182B Rapid end extracting method of large mining height working face |
| 04/09/2014 | CN203531931U Underground coal mine excavation working face temporary supporting device |
| 04/09/2014 | CN203531926U Tunnel construction cross support reinforcing device |
| 04/09/2014 | CN103711506A Three-level protective device of large-inclination conveyor for coal mines |
| 04/09/2014 | CN102606159B Medium thick heavy-pitch crushed ore body frame type artificial top downward segmenting cemented filling method |
| 04/09/2014 | CN102465706B Digging method for vein-following developing roadway of inclined stratified rock body |
| 04/03/2014 | WO2014047721A1 Drill and blast method and apparatus for the same |
| 04/02/2014 | CN103696788A Abandoned roadway timbering device and construction method of fully mechanized coal mining face passed through abandoned roadway |
| 03/26/2014 | CN203499708U Self-propelled coal mine tunnel temporary supporting anchor protecting machine |
| 03/26/2014 | CN203499695U Reinforcing structure for shallow-buried tunnel in bustling urban area |
| 03/26/2014 | CN103670465A Supporting frame of roadway surrounding rock |
| 03/26/2014 | CN103670464A Roadway interlocking reinforced type U-shaped shed |
| 03/19/2014 | CN102518452B Rapid and safe arch supporting method in process of passing through top-coal caving region |
| 03/12/2014 | CN203476366U Novel temporary mining supporting device |
| 03/12/2014 | CN203476365U Air duct cloth stitching polyester fiber false roof flexible net for coal mine |
| 03/12/2014 | CN203476364U Colliery steel wire rope reinforced polyester fiber flexible composite net |
| 03/12/2014 | CN203476363U Triangular mesh type stereoscopic steel reinforcement mesh for coal mine tunnel shotcreting layer support |
| 03/05/2014 | CN203463122U Temporary support equipment for tunneling face in underground coal mine |
| 03/04/2014 | US8662796 Method and apparatus for lining tunnel walls or tunnel ceilings with protective nets |
| 02/27/2014 | WO2013110104A3 Tunnelling or extraction machine with an anchor-setting device and support manipulator or supporting device |
| 02/20/2014 | WO2014028924A1 Mesh handling apparatus and related methods |
| 02/12/2014 | CN103573278A Gantry self-traveling type anchor supporting machine |
| 02/12/2014 | CN103572761A Protection method for existing line nearby construction by using brook protective screenings |
| 01/22/2014 | CN103527228A Self-propelled type temporary support and anchor support machine for coal mine roadway |
| 01/22/2014 | CN103527226A Steeply inclined seam working face shielding and retracing method |
| 01/15/2014 | CN203394552U Roadway support protecting net and support system |
| 01/15/2014 | CN103510973A Triangular grid type three-dimensional steel bar mesh for supporting coal mine tunnel spraying layer |
| 01/15/2014 | CN102562098B Tunnel steel temporary inverted arch with rapid assembly and disassembly |
| 01/01/2014 | CN203374291U Flexible protective device of lapping support |
| 01/01/2014 | CN103485807A Sliding net bag with width adjustable of support with mesh laying device |
| 01/01/2014 | CN103485791A Construction method for in-situ maintenance or extension of road tunnel |
| 01/01/2014 | CN103485717A Fully-hydraulic four-arm anchor rod/anchor cable drill carriage |
| 12/25/2013 | CN103470286A Gob-side entry retaining method realizing support by intercepting self-slip gangue through strip reinforcing steel bar mesh |
| 12/25/2013 | CN103470285A Construction device for in-situ maintenance or extension of highway tunnel |
| 12/25/2013 | CN103470284A Method for producing polyester fiber integral flexible false roof net for fully-mechanized mining withdrawing of coal mine |
| 12/11/2013 | CN203335101U Hook type temporary support for U-shaped steel frame shed roadway of coal mine |
| 12/04/2013 | CN203321552U Temporary support system during tunneling of laneway |
| 12/04/2013 | CN103422870A Roof supporting method for full super-high seam mining |
| 11/20/2013 | CN203296792U Safe supportive false roof for mining |
| 11/20/2013 | CN103397893A Roadway supporting protective net and supporting system |
| 11/13/2013 | CN203285462U Eight-twisted protective net for mine |
| 11/13/2013 | CN102128038B Quick construction method for tunnel pipe shed |
| 11/06/2013 | CN203271783U Hinged spray type front canopy |
| 11/06/2013 | CN102418528B End ore-drawing caving mining technology with steel concrete composite man-made false roofs |
| 10/30/2013 | CN203257437U Damping protective screen used for underground supporting operation of mine |
| 10/30/2013 | CN102505949B Support method for coal seam roadway to cross gob |
| 10/23/2013 | CN102296974B Rapid maintaining method for broken roof in stope |
| 10/02/2013 | CN103334778A Construction technology of step temporary support and partial double side walls |
| 09/25/2013 | CN203214077U Edge supporting device for blasting driving surface of coal mine |
| 09/25/2013 | CN102278128B High-stress poor rock roadway supporting process |
| 09/18/2013 | CN103306720A Inclined separated layer solid filling coal mining method for super thick coal seam |
| 09/18/2013 | CN103306694A Cantilever support method and device for heavy-pitch soft coal seam in roadway excavation |
| 09/11/2013 | CN103291305A Quick and low-cost artificial fake roof construction method for ground mine |
| 09/11/2013 | CN102305091B Support structure for hard rock large-section tunnel construction, and construction method for support structure |
| 08/28/2013 | CN103266904A Anchor bolt support device and heading machine with same |
| 08/28/2013 | CN103266903A Supporting method capable of preventing roof and wall falling accidents |
| 08/21/2013 | CN203145970U Device for preventing coal wall caving |
| 08/14/2013 | CN203130124U Underground coal mine tunnel excavation temporary protection assisting structure |
| 08/07/2013 | CN203114308U Gantry self-propelled anchoring and supporting machine |