| Patents for E21D 15 - Props; Chocks (3,432) |
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| 03/03/2015 | US8967593 Wheelset press |
| 02/11/2015 | CN204152531U 一种综采工作面双进双回环形供液管路 One kind of mechanized mining face double inlet fluid supply lines back to the ring |
| 02/11/2015 | CN103206232B 跟随掘进机同步预支护与锚护的装置 Follow TBM advance guard on bolt synchronization device |
| 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 |
| 02/04/2015 | CN204140114U 一种插装式单向锁 One kind of plug-way lock |
| 02/04/2015 | CN204140113U 一体机 One machine |
| 02/04/2015 | CN204140103U 液压支架大立柱穿销限位装置 Hydraulic support large column through pin stopper |
| 02/04/2015 | CN204140102U 可拆卸式悬移液压支架用阀架 Detachable Suspension Hydraulic valve frame bracket |
| 02/04/2015 | CN204140101U 液压支架换向阀锁定装置 Hydraulic valve bracket locking device |
| 02/04/2015 | CN204140100U 液压支架操纵阀组的闭锁装置 Operated valve hydraulic support locking device |
| 02/04/2015 | CN204140099U 一种插装式液压阀 One kind of hydraulic cartridge valves |
| 02/04/2015 | CN204140098U 一种组合式电磁先导换向阀 A modular solenoid pilot valve |
| 02/04/2015 | CN204140097U 一种重复使用的采场顶板机械支柱 Stope roof pillars of a reusable mechanical |
| 02/04/2015 | CN104329104A 一种液压支架压力监控装置 A hydraulic pressure monitoring device bracket |
| 02/04/2015 | CN103075613B 一种井巷工作面液压接顶装置 Roadway pick one kind of Hydraulic top devices |
| 01/28/2015 | CN204126659U 一种液压拆柱机 A hydraulic demolition column machine |
| 01/28/2015 | CN204126658U 一种矿井支护装置 Supporting device in mine |
| 01/21/2015 | CN204113313U 全液压式单体支柱自动拆卸装置 Prop automatic fully hydraulic demolition equipment |
| 01/21/2015 | CN204113312U 立柱外缸拆缸设备 Pillar outer cylinder cylinder demolition equipment |
| 01/21/2015 | CN204113311U 中缸立式拆缸设备 In-cylinder vertical cylinder demolition equipment |
| 01/21/2015 | CN204113310U 薄煤层自带液控支柱 Thin seam comes Pilot pillar |
| 01/21/2015 | CN204113309U 一种液压支架的采高指示装置 A hydraulic mining height bracket indicating device |
| 01/21/2015 | CN204113308U 一种液压支架底部连接横梁 A hydraulic transom bottom bracket |
| 01/21/2015 | CN204113307U 一种煤矿液压支撑装置 One kind of mine hydraulic support device |
| 01/21/2015 | CN204113306U 一种煤矿用的钢构支护 Steel support a coal mine guard |
| 01/14/2015 | CN204098939U 一种用于煤矿采煤工作面支柱回撤运输的柱船装置 Boat column apparatus for coal pillar coal face retracement of transport |
| 01/14/2015 | CN204098938U 多功能的液压支柱结构 Multifunction hydraulic pillar structure |
| 01/07/2015 | CN204082184U 回液自锁换向阀 Back to the liquid self-locking valve |
| 01/07/2015 | CN204082183U 单体液压支柱四用阀 Hydraulic prop four valves |
| 01/07/2015 | CN204082182U 单体液压支柱三用阀存放箱 Three valves hydraulic prop storage box |
| 01/07/2015 | CN204082181U 一种矿井支护 Support in mine |
| 01/07/2015 | CN204082180U 单体液压支柱 Hydraulic prop |
| 01/07/2015 | CN204082179U 轻型柱塞悬浮单体液压支柱 Light plunger suspension hydraulic prop |
| 01/07/2015 | CN104265335A 一种端头液压支架的侧护结构 An end side supporting structure of hydraulic support |
| 01/07/2015 | CN103104267B 软岩巷道整体掘护支架 Soft rock roadway excavation retaining overall stent |
| 01/07/2015 | CN102777194B 用于液压支架的防倾倒装置和液压支架 For hydraulic support of the anti-tip device and hydraulic support |
| 12/31/2014 | CN204060742U 一种拆柱机 One kind of demolition column machine |
| 12/31/2014 | CN204060741U 一种操纵阀组阀芯组件的密封结构 A seal structure valve spool assembly manipulation |
| 12/31/2014 | CN204060740U 一种安全阀 As a safety valve |
| 12/31/2014 | CN204060739U 一种大流量安全阀 One kind of high flow valve |
| 12/31/2014 | CN204060738U 一种大流量安全阀的密封结构 Sealing structure of a large flow safety valve |
| 12/31/2014 | CN204060737U 一种液控单向阀 One kind of check valve |
| 12/31/2014 | CN204060736U 煤矿液压支架用电液控制换向阀 Hydraulic support mine electric hydraulic control valve |
| 12/31/2014 | CN204060735U 增压型单体液压支柱 Supercharged hydraulic prop |
| 12/31/2014 | CN204060734U 用于隧道支护体系的加强型钢架 For reinforced steel tunnel support system |
| 12/30/2014 | US8919735 Scissor stack assembly |
| 12/24/2014 | CN204041071U 一种综掘机用液压上梁机 A mechanized digging machine with a hydraulic beam machine |
| 12/24/2014 | CN104234728A 一种全液压式单体支柱自动拆卸装置 Prop a fully automatic hydraulic demolition equipment |
| 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 |
| 12/11/2014 | US20140363241 Pumpable Crib |
| 12/10/2014 | CN204002867U 一种操纵阀组的阀芯组件 A manipulation of the spool valve assembly |
| 12/10/2014 | CN204002866U 一种通用型液控单向阀 A common type check valve |
| 12/10/2014 | CN204002865U 一种液控单向阀及与其配合的液压支架立柱柱头 One kind of check valve and hydraulic support column with its stigma |
| 12/10/2014 | CN204002864U 单向安全底阀及液压支架立柱 Bottom check safety valves and hydraulic support column |
| 12/10/2014 | CN204002863U 一种可调式大倾角掩护式液压支架安全行走梯 Steep cover an adjustable type hydraulic support safe walking ladder |
| 12/10/2014 | CN204002862U 特种单体液压支柱 Special hydraulic prop |
| 12/10/2014 | CN204002861U 一种矿用充气式可伸缩液压支柱 Ore with inflatable retractable hydraulic pillar |
| 11/27/2014 | US20140348596 Nested mine roof supports |
| 10/08/2014 | EP2787165A1 Support cylinder and formwork assembly with support cylinder |
| 10/07/2014 | US8851805 Telescopic mine roof support |
| 10/07/2014 | US8851804 Pumpable support with cladding |
| 10/07/2014 | US8850750 Rapidly-deployable lightweight load resisting arch system |
| 10/02/2014 | WO2014160253A1 Mining methods and equipment |
| 09/02/2014 | US8821075 Yieldable support prop and method |
| 08/28/2014 | WO2014018993A3 Mine roof support |
| 08/13/2014 | CN203769819U 箱型底座柱窝结构 Nest box base column structure |
| 08/13/2014 | CN203769813U 支架大销轴拆卸装置 Bracket big pin detaching device |
| 08/13/2014 | CN203769812U 可移式液压组装站 Portable hydraulic assembly station |
| 08/13/2014 | CN203769811U 一种含有液压增压器的液压支架立柱自助增压系统 Containing hydraulic booster of self-pressurized system hydraulic support column |
| 08/13/2014 | CN203769810U 用于煤矿井下液压支架的反冲洗过滤器 Backwash filter for coal mine hydraulic support |
| 08/13/2014 | CN203769809U 钢管混凝土支架让压装置 Concrete pipe bracket allow pressure device |
| 08/13/2014 | CN203769808U 坑道如意支撑组件 Hang wishful support assembly |
| 08/13/2014 | CN203763967U 一种管道式过滤装置 One kind ducted filter device |
| 08/13/2014 | CN103982209A 单体液压支柱安全保护装置 Hydraulic prop security devices |
| 08/13/2014 | CN103982208A 矿用内外翻转式抗让吸能防冲装置 Mine internal and external anti-flip-absorbing anti-red device to let |
| 08/13/2014 | CN103982207A 一种高工作阻力液压支架立柱 A high-resistance hydraulic support pillar work |
| 08/13/2014 | CN103982206A 一种地下工程井巷让压支护系统 An underground roadway project to Pressure Support System |
| 08/13/2014 | CN103982205A 拉行式单体液压支柱 Pull Line Prop |
| 08/13/2014 | CN102767383B 一种坑道支柱的加工方法 One kind of tunnel pillar of processing methods |
| 08/12/2014 | US8801338 Nested mine roof supports |
| 08/07/2014 | WO2014018992A3 Blast shield for mine roof supports |
| 08/06/2014 | CN203756227U 一种单体液压支柱手推车 One monomer hydraulic prop trolley |
| 08/06/2014 | CN203756200U 液压支架解体顶销装置 Hydraulic support disintegration ejector pin device |
| 08/06/2014 | CN203756199U 一种安全性能高的液压支架 High safety performance of a hydraulic support |
| 08/06/2014 | CN103967511A 一体机 One machine |
| 07/30/2014 | CN203742634U 一种可完成大力矩回转的组合回转支承 One kind to be completed by a combination of high torque rotary slewing ring |
| 07/30/2014 | CN203742633U 一种用油缸实现小行程大移距的平行四边形机构 One kind of stroke with a cylinder to achieve a small shift away from large parallelogram mechanism |
| 07/30/2014 | CN203742632U 悬移支架专用柱鞋 Suspended support special column shoes |
| 07/30/2014 | CN203742631U 单体液压支柱大流量水压三用阀 Hydraulic prop with three large flow pressure valve |
| 07/30/2014 | CN203742630U 一种液压支架的底座 A hydraulic support base |
| 07/30/2014 | CN203742629U 采煤工作面支架安撤专用滑板 Coal Face dedicated slide bracket Ann withdrawal |
| 07/30/2014 | CN203742628U 单体支柱防倒装置 Anti-fall device pillar monomer |
| 07/30/2014 | CN203742627U 矿用内注式单体液压支柱 Mine within the injection-type hydraulic prop |
| 07/30/2014 | CN103953372A 一种供煤矿综采液压支架使用的氮气安全阀 One kind of hydraulic support for the use of coal nitrogen valve |
| 07/30/2014 | CN103953371A 一种供煤矿综采液压支架使用的氮气安全阀 One kind of hydraulic support for the use of coal nitrogen valve |
| 07/30/2014 | CN103953370A 一种供煤矿综采液压支架使用的氮气安全阀 One kind of hydraulic support for the use of coal nitrogen valve |
| 07/30/2014 | CN103953369A 一种供煤矿综采液压支架使用的氮气安全阀 One kind of hydraulic support for the use of coal nitrogen valve |
| 07/23/2014 | CN203730450U 工程液压缸 Engineering hydraulic cylinder |
| 07/23/2014 | CN203730022U 液压支架操作阀保护装置 Hydraulic supports operating valve protection device |
| 07/23/2014 | CN203730021U 一种具有横拉及斜拉防倒装置的放顶煤液压支架组 Stayed having a horizontal pull and anti-down device caving hydraulic stent group |