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北京煤矿机械厂
北京煤矿机械厂
中煤北京煤矿机械有限责任公司
北煤机公司党委召开理论学习中心组学习（扩大）会议——赴北京市全面从严治党警示教育基地参观学习 中国中煤党委书记、董事长王树东到北煤机公司调研中煤北京煤矿机械有限责任公司（简称北煤机公司），前身为北京煤矿机械厂，始建于1958年10月。1998年4月隶属于中国中煤能源集团有限公司，2006年6月公司化改制，随中煤股份a+h股 中煤北京煤矿机械有限责任公司 公司简介 CHINACOAL中煤北京煤矿机械有限责任公司隶属于 中国中煤能源集团有限公司 ，是国内设计、制造综采 液压支架 最大的专业厂家之一，公司始建于1958年,现有职工3500余人，资产总额超过30亿元。中煤北京煤矿机械有限责任公司 百度百科2024年11月19日 中煤北京煤矿机械有限责任公司（简称北煤机公司），前身为北京煤矿机械厂，始建于1958年10月。 1998年4月隶属于中国中煤能源集团有限公司，2006年6月公司化改制，随中煤股份A+H股上市，归属中煤装备管理。中煤北京煤矿机械有限责任公司社招 北京本地宝
中煤北京煤矿机械有限责任公司 企查查
简介： 中煤北京煤矿机械有限责任公司（曾用名：北京煤矿机械厂）是⼀家成⽴于1981年01月24日的有限责任公司，也是中煤集团旗下企业，属于以从事制造业为主的企业。产业规模实力、技术装备水平、产品成套服务能力、综合竞争实力位居行业前列，承担国家重大科技专项40余项，省部级以上科技奖项140余项，在国内率先形成了煤矿综采综掘装备高端化、 中国中煤能源集团有限公司 装备制造 CHINACOAL2024年11月19日 中煤北京煤矿机械有限责任公司（简称北煤机公司），前身为北京煤矿机械厂，始建于 1958年10月。1998年4月隶属于中国中煤能源集团有限公司，2006年6月公司化改 中煤北京煤矿机械有限责任公司 通知公告 中煤北京 CNA CN79A CN7A CNA CN A CN A CN A CN 7 A CN7 A CN 7A CN A CN A CN A Authority CN China Prior art keywords valve body valve main valve valve core pressure Prior art date Legal status (The legal CNA Google Patents
CNB 一种环空压力井下控制阀 Google Patents
CNB CN72A CN7A CNB CN B CN B CN B CN 7 A CN7 A CN 7A CN B CN B CN B Authority CN China Prior art keywords coupling cavity pipe wall outer cylinder accommodating cavity Prior art date Legal CNC CNB96A CN9A CNC CN C CN C CN C CN B96 A CNB96 A CN B96A CN 9 A CN9 A CN 9A CN C CN C CN C Authority CN China Prior art keywords embedding part valve CNC 释放阀 Google PatentsCNA CN22A CN2A CNA CN A CN A CN A CN 2 A CN2 A CN 2A CN A CN A CN A Authority CN China Prior art keywords net flexible net wire rope flexible support Prior art date Legal status (The legal status CNA 大采高末采挂网工艺 Google PatentsKRB1 KR71A KRA KRB1 KR B1 KR B1 KR B1 KR 71 A KR71 A KR 71A KR A KR A KR A KR B1 KR B1 KR B1 Authority KR South Korea Prior art keywords large KRB1 릴리프 밸브 Google Patents
USB1 Relief valve Google Patents
USB1 US10/787,718 USA USB1 US B1 US B1 US B1 US A US A US A US B1 US B1 US B1 Authority US United States Prior art keywords fitting section diameter fitting larger diameter valve element larger Prior art date 2021年3月8日 종래보다 슬림형인 릴리프 밸브를 제공한다 본 발명의 릴리프 밸브에서는, 통형상의 아우터 스템의 내부에 통형상의 가동밸브체가 끼워맞추어지고, 그들 아우터 스템 및 가동밸브체의 내측을 함께 관통한 연통공간이 형성된다 이것에 의해, KRB1 릴리프 밸브 Google PatentsUSB1 US10/787,718 USA USB1 US B1 US B1 US B1 US A US A US A US B1 US B1 US B1 Authority US United States Prior art keywords fitting section diameter fitting larger diameter valve element larger Prior art date USB1 Relief valve Google PatentsUSB1 US10/787,718 USA USB1 US B1 US B1 US B1 US A US A US A US B1 US B1 US B1 Authority US United States Prior art keywords fitting section diameter fitting larger diameter valve element larger Prior art date USB1 Relief valve Google Patents
CNA 一种采煤工作面远距离收放网装置 Google
CNA CN7XA CN7A CNA CN A CN A CN A CN 7 A CN7 A CN 7A CN A CN A CN A Authority CN China Prior art keywords net coal hook metal mesh cylinder Prior art date Legal status (The legal status is an CNB CN65A CN6A CNB CN B CN B CN B CN 6 A CN6 A CN 6A CN B CN B CN B Authority CN China Prior art keywords net rolling net oil cylinder connecting rod bracket Prior art date Legal status (The legal CNB 临时支护与铺网装置 Google PatentsCNA CN72A CN7A CNA CN A CN A CN A CN 7 A CN7 A CN 7A CN A CN A CN A Authority CN China Prior art keywords box cupling control valve annular pressure accommodating chamber downhole control Prior art CNA 一种环空压力井下控制阀 Google PatentsCNB CN79A CN7A CNB CN B CN B CN B CN 7 A CN7 A CN 7A CN B CN B CN B Authority CN China Prior art keywords valve body valve core main valve automatic fluid valve Prior art date Legal status (The CNB Google Patents
CNA Large mining height endmining net Google
The invention relates to a coal mining technology, in particular to a large mining height endmining net hanging process The problem of flexible net roll hanging in the large mining height last phase in coal mine mining work is solved The large mining height endmining net hanging process comprises the steps that a flexible net roll and a support set are arranged in parallel, all CNA CN77A CN7A CNA CN A CN A CN A CN 7 A CN7 A CN 7A CN A CN A CN A Authority CN China Prior art keywords frame net networking unit net volume Prior art date Legal status (The legal status is an CNA Google PatentsCNA CNA96A CN9A CNA CN A CN A CN A CN A96 A CNA96 A CN A96A CN 9 A CN9 A CN 9A CN A CN A CN A Authority CN China Prior art keywords embedding part valve CNA 释放阀 Google PatentsThe invention discloses a safety valve, which comprises a valve shell, a valve body, a valve sleeve, a valve core and a filter, wherein a liquid inlet hole is formed in the valve body; an accommodating cavity is formed in the valve sleeve; the valve core is arranged in the accommodating cavity of the valve sleeve; and the filter is arranged in the valve body and is CNA Safety valve Google Patents
DE4B4 Entlastungsventil Google Patents
Entlastungsventil, das arbeitet, wenn ein Innendruck auf oder über einen vorgegebenen Wert ansteigt, wobei ein komprimiertes Fluid im Inneren zur Außenseite abgegeben wird, enthaltend: einen äußeren zylindrischen Schaft (37, 62), der zwei offene Enden aufweist, wobei der äußere Schaft einen Abschnitt (66, 98) größeren Innendurchmessers und einen Abschnitt (28) The invention discloses a kind of pressure balance type dual control water injection valves, including valve body, the core assembly being arranged inside is connected by valve chamber with inlet and water jet, core assembly includes be spirally connected connected valve pocket and valve seat, it respectively corresponds to offer on the outside of valve pocket and valve seat CNA Pressure balance type dual control Google CNC CNB96A CN9A CNC CN C CN C CN C CN B96 A CNB96 A CN B96A CN 9 A CN9 A CN 9A CN C CN C CN C Authority CN China Prior art keywords embedding part valve CNC 释放阀 Google PatentsThe invention discloses a longdistance net setting and drawing device at a coal face A roller is arranged in a rotary mode on a foreset and wound with a steel wire rope of which the free end is fixedly connected with a net hook for hooking a metal mesh to pull the metal mesh by the steel wire rope A net drawing rod is matched with the net hook of which one end is detachably fixed CNA Longdistance net setting and drawing device at
Three way type Pilot operated check valve Google Patents
A kind of Three way type Pilot operated check valve, comprise the valve gap connected with valve body, valve gap and valve body surround valve pocket jointly, piston and the push rod with spring is provided with in valve pocket, piston connects with one end of push rod, backing plate and the second cushion cover is also provided with in valve pocket, valve gap connects with one end CNB CN7XA CN7A CNB CN B CN B CN B CN 7 A CN7 A CN 7A CN B CN B CN B Authority CN China Prior art keywords valve cavity communicated liquid storage storage cavity Prior art date Legal status (The CNB 压力平衡式双控喷水阀 Google Patentsمصنع متنقل لتجهيز الفحم للبيع الفحم سحق آلة أو مصنع مصنعين سحق الفحم عملية عملية سحق خام ما يسمىcrystalpromotion关于我们The invention discloses a kind of hydraulic control oneway valve, including valve body, valve pocket, push rod, the valve seat being sheathed on push rod, the valve element being arranged inside valve pocket and the valve pad for being arranged on valve seat and being engaged with valve element, valve pocket is provided with and allows the first liquid pass hole that liquid CNA Hydraulic control oneway valve Google Patents
CNB Google Patents
CNB CN77A CN7A CNB CN B CN B CN B CN 7 A CN7 A CN 7A CN B CN B CN B Authority CN China Prior art keywords frame net networking unit net volume Prior art date Legal status (The legal status is an The invention discloses a steel wire rope splicing machine, which comprises a work table, a rope blocking vertical plate, a flat sharp cone and a rotating shaft support frame, wherein a sharp cone support frame is fixedly arranged on the work table, a shaft sleeve is connected onto the sharp cone support frame through a screw bolt, a sharp head of the flat sharp cone is sheathed into CNA Steel wire rope splicing machine Google Patents종래보다 슬림형인 릴리프 밸브를 제공한다 본 발명의 릴리프 밸브에서는, 통형상의 아우터 스템의 내부에 통형상의 가동밸브체가 끼워맞추어지고, 그들 아우터 스템 및 가동밸브체의 내측을 함께 관통한 연통공간이 형성된다 이것에 의해, 아우터 스템의 일단으로부터 연통공간(r)내에 흘러 KRA 릴리프 밸브 Google PatentsThe invention belongs to the technical field of a mine support device, and particularly relates to a steppedtype support of a top paving mesh laneway blast advancement face, which mainly solves the problem of lacking the blast advancement face support device in the process of coal mining The technical scheme provided by the invention is as follows: the support comprises an outer CNB Steppedtype support of top paving mesh
USB1 Relief valve Google Patents
USB1 US10/787,718 USA USB1 US B1 US B1 US B1 US A US A US A US B1 US B1 US B1 AuthorityEin Entlastungsventil enthält einen äußeren Schaft (21), der einen Einsatzabschnitt (26) größeren Durchmessers und einen Einsatzabschnitt (28) kleineren Durchmessers enthält, ein bewegbares Ventilelement (30), das in beide Einsatzabschnitte (26, 28) derart eingesetzt ist, daß es zwischen einer Öffnungsposition und einer Schließposition bewegbar ist, einen Verbindungsraum (20R), DE4A1 Entlastungsventil Google PatentsThe invention belongs to the technical field of a mine support device, and particularly relates to a steppedtype support of a top paving mesh laneway blast advancement face, which mainly solves the problem of lacking the blast advancement face support device in the process of coal mining The technical scheme provided by the invention is as follows: the support comprises an outer CNA Steppedtype support of top paving meshThe invention provides a temporary supporting and net laying device, which comprises a rack, a temporary supporting mechanism and an automatic net laying mechanism, wherein the rack is provided with a support frame; temporary support mechanism includes: the device comprises a lower stable support, a lower stable oil cylinder, a lifting oil cylinder, a connecting rod leveling Temporary support and lapping device Google Patents
USB1 Relief valve Google Patents
USB1 US10/787,718 USA USB1 US B1 US B1 US B1 US A US A US A US B1 US B1 US B1 Authority US United States Prior art keywords fitting section diameter fitting larger diameter valve element larger Prior art date The invention discloses a connecting device between a top beam and a height adjusting mechanism on a fullymechanized hydraulic support for an underground mining working face of a coal mine The connecting device comprises the top beam, a chassis and a strut, wherein the rear end of the top beam is connected with the upper end of the height adjusting mechanism; the CNA Connecting device Google PatentsThe invention discloses a kind of annular pressure downhole control valve, belong to oilgas well engineering technical field, designed extremely to solve annular pressure in Oil/gas Well, the outer barrel being connected including box cupling and with the box cupling, the box cupling and the outer barrel have cooperatively formed the first accommodating chamber and the second CNA A kind of annular pressure downhole control The invention discloses a kind of bottom plate of thick seam slicing system to spread interconnection device and method automatically, the device includes multiple hydraulic supports of parallel getting working face, the afterbody of each hydraulic support is provided with a back seat, net volume laying mechanism is respectively equipped with the back seat, slipping CNA A kind of bottom plate of thick seam Google
Howo truck part AZ Universal Joint Joint Assembly
HOWO Heavy Duty Truck Universal Joint Coupling DHL, TNT, UPS, or Fedex Company information China Heavy Duty Truck ImportExport Co,Ltd is one of the main exporters of Chinese trucks which is authorized by Ministry of Commerce