• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A longwall mineral mining installation has a conveyor and a plurality of roof support units positioned side-by-side on the goaf side of the conveyor. Each roof support unit has a roof shield having an advanceable shield extension. Each unit has a first hydraulic ram for extending its shield extension, and a second hydraulic ram for advancing the conveyor. The extension of each first ram is controlled in dependence upon the retraction of one of the second rams (either the second ram of the same unit or that of an adjacent unit). This control is effected by controlling the supply of pressurized hydraulic fluid to the first rams. In one embodiment this is carried out by a control valve which has a spring-loaded plunger which engages with a series of equispaced cams on the movable cylinder of the associated second ram. In another embodiment, the piston rods of the rams are provided with series of equispaced magnets. The cylinders of the rams are provided with sensors, which sense the magnets and generate control signals. A control box is provided to direct the control signals to control valves associated with the rams, so that the first rams are extended by the same distance as that through which the second rams are retracted.
    公开号:SU1132794A3
    申请号:SU802910801
    申请日:1980-04-21
    公开日:1984-12-30
    发明作者:Вайрих Вальтер；Розенберг Харри；Бекер Куниберт；Деттмерс Михаель
    申请人:Геверкшафт Эйзенхютте Вестфалия (Фирма)；
    IPC主号:
    专利说明:

    at
    17 - "- l-- th t" "
    with
    DK. G .. Shm
    I j i
    00
    Yu
    The invention relates to the mining industry and can be used in the extraction of minerals by the underground method using mechanized roof supports. Devices are known for simultaneous control of several hydraulic cylinders, for example, lining elements and a downhole conveyor, including distributors of feed cylinders controlled depending on the progress of the slide, movement control, coordinating the flow of some cylinders with advancing steps of others, contains controls that interact with the distributor feed cylinders and mounted on cylinders for relocation or on their rods, while the control bodies consist of camshafts, Interactions with cam probes 1. However, this device does not both bake a sufficiently reliable control Lenin. The closest to the present invention is a control device for hydraulic cylinders for mechanized supports, containing working cylinders, in the rods of which signal sensors of permanent magnets are embedded, and mounted on the cylinder body with the ability to interact with probing sensors, while the permanent magnets installed in elements of non-magnetic material, fixed in the grooves of the rod 2. However, fixing the permanent magnets in the piston by pouring does not allow for an immaculate coating of the rod The efficiency of the surface creates the premature destruction of the sensitive piston rod seals and does not reliably protect permanent magnets from corrosion. In addition, the forces arising in the rod are transmitted to the maits when the latter are rigidly fastened. The aim of the invention is to improve the protection of permanent magnets from the forces arising in the rod and to increase the effectiveness of corrosion protection. In order to achieve the installed target, in the control device of hydraulic cylinders for mechanized plugs, containing working cylinders, in the rods of which signal sensors made of permanent magnets are embedded, and on the cylinder body, probing elements are installed with the ability to interact with the sensors, while the permanent magnets are mounted in elements of non-magnetic material fixed in the grooves of the stem, the elements of the non-magnetic material are made in the form of a metal drop: sula, and an additional electroplating is applied to the surface of the stem esky metallic layer. The drawing schematically shows the proposed device. Permanent magnets 3, distributed along the length of the rod with an interval equal to the step of the shifter, are embedded in the rod 1 of cylinder 2 of the advancing. At the front end of the cylinder 2 of the advancing, there is fixed a probing body 4 consisting of an inductance coil, In the stem 5 of the feed cylinder 6, pivotally mounted between the main 7 and the cantilever 8 upper,. permanent-magnets distributed with equal intervals along the length are embedded. 9.. In addition, at the front end of the feed cylinder 6 is fixed probe body 10, made in the form of an inductor. The valve 11 contains an electromagnetic valve, communicates through the trunk 12 with the rod cavity of the shifting cylinder 2 and usually keeps the connection of the lines open, locks the highway 12 only when it is turned on via the electric control line 13. The corresponding valve 14 is installed in the pipeline 15 and communicates with the piston cavity 16 of the pump. cylinder 6. The distributor 14 is controlled via an electrical control line 17. The electrical control lines 17 and 13, as well as the electrical connecting lines 18 and 19 are connected to an electrical control device 20 comprising, for example, an amplifier and a transducer of measured values. The permanent magnets 3 and 9 are enclosed in capsules of a non-magnetic material, such as brass, and embedded in the grooves of the rods 1 and 5. The fastening of the brass capsules can be made by spike connections. After build in 3P
    ki capsules with magnets stocks cover. a layer of metal, such as chromium, nickel, etc.
    The device works as follows.
    In the initial position, the cantilever top to 8 is fully retracted and the cylinder 2 of the retraction is fully extended, the shield frame is moved to the conveyor. The distributor 14 is in the blocking position, since the inductor 10 is in the zone of action of the permanent magnet 9 and excited, while through the electrical control device 20 through the electric control line 17 the distributor 14 is connected to the current line. The other distributor 11 is open, since the inductor 4, with the fully extended cylinder 2, the advances is outside the zone of action of the permanent magnet 3. When the conveyor is moved, the first of the magnets 3 on the rod 1 of the advancing cylinder 2 also moves opposite the inductor 4, as a result The latter is activated and, through the electric control unit 20, the valve 11 switches to the blocking position, and at the same time the valve 14 opens. Cantilever top to 8 extends to those
    2794L
    pore until feed cylinder 6. the next of the permanent magnets 9 will not reach the inductance 10. Thus, the distributor 14 5 is again switched to the blocking position, and the distributor 11 is opened. The installation is ready for the next operation.
    Suspension support with the help of cylinder 2 advances and pushing the feed cylinder 6 can be carried out in the reverse sequence. The cantilever top to 8 is pushed or pushed onto that. however, the magnitude by which the cylinder is moved or pushed in by the shifter cylinder 2. Since the gap between the permanent magnets 9 on the slide 5 of the feed cylinder 6 corresponds to the gap between the constant magnets. 3, on the rod 1 of the cylinder 2, the advances, the steps of the cylinders which are precisely matched with each other are carried out.
    Placing the magnets in the capsules prevents the transfer of the loads acting on the rod to the magnets, improves the orientation of the magnets, and also prevents damage to the magnets during stem treatment and ensures a uniform and defect-free anti-corrosion. protection.
    权利要求:
    Claims (1)
    [1]
    HYDRAULIC CYLINDER CONTROL DEVICE FOR MECHANIZED FASTENERS, containing working cylinders, in the rods of which there are built-in signal sensors from permanent magnets, and probing bodies are installed on the cylinder body to interact with sensors, while the permanent magnets are installed in elements of non-magnetic material fixed in the grooves of the rod, characterized in that, in order to improve the protection of permanent. magnets from the forces arising in the rod, and increase the effectiveness of corrosion protection, elements of non-magnetic material are made in the form. metal capsule, and an additional galvanic metal layer is applied to the surface of the rod.
    SU <„, 1132794>
    1 1132794
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1132794A3|1984-12-30|Control device for powered support hydraulic cylinders
    Holdsworth et al.1997|The recognition of reactivation during continental deformation
    CN105588698A|2016-05-18|Seabed pipeline simulation impact test system
    ES462510A1|1978-07-16|Methods and apparatus for determining the stuck point of a conduit in a borehole
    US5936168A|1999-08-10|Dual injector cylinder automatic insertion device for use with high pressure pipelines
    JPS5941492A|1984-03-07|Method of forming anti-wear and corrosion resistant coating layer on piston rod of working cylinder used in underground mining work and working cylinder equipped with the coating layer
    US10533405B2|2020-01-14|Seismic wave generating tool, such as a spark gap of an electric arc generation device
    SU1671845A1|1991-08-23|Device for survey of cement stone contact zone
    US2980788A|1961-04-18|Welding process
    SU621887A1|1978-08-30|Device for controlling plough arrangement hydraulic system
    JPS58168712A|1983-10-05|Measurer for hardness of seabed
    SU1104266A1|1984-07-23|Arrangement for breaking rock
    SU1373809A1|1988-02-15|Front-loading unit
    RU2024744C1|1994-12-15|Device for mineral selective extraction
    CN209858251U|2019-12-27|In-situ confining pressure experimental device for rock-soil body in rock-soil drilling
    SU1260890A1|1986-09-30|Device for destruction of blastholes
    PL118233B1|1981-09-30|Apparatus for winning thick deposits of useful minerals skopaemogo
    SU1225898A1|1986-04-23|Hydraulic system of power support unit
    SU1097768A2|1984-06-15|Sliding forms
    FI78159B|1989-02-28|ANORDNING FOER BORRNING AV HAOL I STEN I SAMMA PLAN.
    RU2153537C2|2000-07-27|Method of performing deep anode grounding
    SU714023A1|1980-02-05|Filling-up machine
    SU1716161A1|1992-02-28|Support unit
    SU1224409A1|1986-04-15|Unit of power support
    SU1093827A1|1984-05-23|Dust suppression system of power mine support
    同族专利:
    公开号 | 公开日
    GB2048354A|1980-12-10|
    ZA802639B|1981-05-27|
    PL223902A1|1981-02-27|
    FR2499172A1|1982-08-06|
    US4307981A|1981-12-29|
    BE883062A|1980-08-18|
    FR2499172B1|1984-12-21|
    AU535741B2|1984-04-05|
    PL124607B1|1983-02-28|
    PL127479B1|1983-10-31|
    DE2917609C2|1985-12-19|
    FR2457963A1|1980-12-26|
    FR2457963B1|1984-02-17|
    GB2048354B|1983-08-03|
    AU5805880A|1980-11-06|
    DE2917609A1|1980-11-13|
    US4427321A|1984-01-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR89164E|1964-06-04|1967-05-19|Bergwerksverband Gmbh|Process for automatically and successively advancing and fixing the different units of a hydraulic support|
    FR1443048A|1964-08-20|1966-06-17|Hoesch Bergbautechnik Gmbh|Mine support trestle|
    US3412391A|1964-10-31|1968-11-19|Gullick Ltd|Pressure-fluid-operated devices and means for indicating the condition thereof|
    GB1088796A|1965-01-06|1967-10-25|Wild A G& Co Ltd|Means for effecting correct alignment of mine roof support units|
    DE1212473B|1965-06-03|1966-03-17|Bergwerksverband Gmbh|Procedure for the automatic backing and setting of extension frames|
    US3439706A|1966-03-02|1969-04-22|Edwin R Barrett|Remote valve actuation and indication system|
    DE1296592B|1966-10-20|1969-06-04|Bergwerksverband Gmbh|Expansion frame|
    GB1184437A|1966-10-26|1970-03-18|Wild A G& Co Ltd|Improvements in Fluid-Operable Mine Roof Supports|
    FR1525363A|1967-04-07|1968-05-17|Compteurs Et Moteurs Aster|Jack comprising a device for monitoring and controlling its position|
    GB1251968A|1968-02-01|1971-11-03|
    DE2348066A1|1973-09-25|1975-03-27|Schloemann Siemag Ag|Hydraulic cylinder with piston position determining device - piston rod used in dosing pumps has inlay of material different to that of rod|
    DE7635587U1|1976-11-11|1977-03-10|Festo-Maschinenfabrik Gottlieb Stoll, 7300 Esslingen|Pneumatic or hydraulic piston-cylinder unit|
    DE2806982C2|1978-02-18|1986-08-14|Gewerkschaft Eisenhütte Westfalia GmbH, 4670 Lünen|Striding extension for blow molding plants in inclined storage|DE3000866C2|1980-01-11|1982-06-16|Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal|Hydraulic control for a walking frame|
    DE3026837C2|1980-07-16|1983-09-08|Klöckner-Werke AG, 4100 Duisburg|Flexible route expansion for mine routes or the like.|
    DE3135026C2|1981-09-04|1985-05-15|Gewerkschaft Eisenhütte Westfalia, 4670 Lünen|Arrangement of permanent magnets on the piston rods of reciprocating piston gears and a method for manufacturing a piston rod with embedded permanent magnets|
    DE3137951C2|1981-09-24|1985-10-17|Gewerkschaft Eisenhütte Westfalia, 4670 Lünen|Hydraulic push-piston gear, in particular for use as a back and forth cylinder in underground mining operations, with permanent magnets arranged on the piston rod|
    DE3304982C2|1982-05-08|1984-09-13|Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal|Hydraulic control for a walking frame|
    DE3225342C2|1982-07-07|1985-04-11|Bergwerksverband Gmbh, 4300 Essen|Thrust piston gear with position transmitter for the expansion or for feed devices of extraction or conveyor systems in the mining industry|
    DE3241237C2|1982-11-09|1985-10-24|Gewerkschaft Eisenhütte Westfalia, 4670 Lünen|Thrust piston gear, in particular for use as a return cylinder in mining operations, with a permanent magnet system arranged on the piston rod|
    DE3318641A1|1982-12-22|1984-06-28|Gewerkschaft Eisenhütte Westfalia, 4670 Lünen|DEVICE FOR CONTROLLING THE SLIDING CAP CYLINDER HYDRAULIC SCREW REMOVAL UNITS|
    FR2576059A2|1982-12-22|1986-07-18|Gewerk Eisenhuette Westfalia|Device for controlling the jacks of sliding cappings of units for hydraulic self-advancing supports|
    DE3508479C2|1985-03-09|1989-07-27|Ruhrkohle Ag, 4300 Essen, De|
    DE3730711A1|1987-09-12|1989-03-23|Bochumer Eisen Heintzmann|ELECTRO-HYDRAULIC PROGRAM CONTROL|
    DE19636389B4|1996-09-07|2004-03-11|Dbt Automation Gmbh|Method and device for load monitoring of hydraulic shield removal frames for underground mining|
    JP5116576B2|2007-06-29|2013-01-09|メレクシステッセンデルロエヌヴィ|Magnetic structure for detecting relative motion between a magnetic structure and a magnetic field sensor|
    AU2008351272B2|2008-02-19|2013-01-10|Beijing Meike Tianma Automation Technology Co., Ltd|Method for controlling longwall mining operations|
    US8376467B2|2008-02-19|2013-02-19|Rag Aktiengesellschaft|Method for automatically producing a defined face opening in plow operations in coal mining|
    US8567871B2|2008-02-19|2013-10-29|RAG Aktiegesellschaft|Method for automatically creating a defined face opening in longwall mining operations|
    CN101952548B|2008-02-19|2014-01-08|拉格股份公司|Method for the controlled maintaining of a distance between the roof and the face in longwall mining operations|
    DE102015102444B4|2015-02-20|2017-01-12|Marco Systemanalyse Und Entwicklung Gmbh|Method and device for determining the pivoting position of a pre-mortar cap|
    CN106382127B|2016-11-24|2017-11-21|安徽理工大学|One species soil property coal working surface hydraulic support and seam mining means of defence|
    CN106437808B|2016-11-25|2017-12-08|安徽理工大学|Hydraulic support and hydraulic support control method|
    US10808533B2|2018-05-17|2020-10-20|Swanson Industries, Inc.|Mining rock deflector apparatus and method|
    CN111207123B|2020-03-16|2022-03-08|中国煤炭科工集团太原研究院有限公司|Synchronous control method for pushing oil cylinder of side mining transportation unit|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2917609A|DE2917609C2|1979-05-02|1979-05-02|Device for controlling the pre-pledging caps of a walking support depending on the progress of the dismantling|
    [返回顶部]