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GB693038A - Improvements relating to hydraulic pit props - Google Patents

Improvements relating to hydraulic pit props

Info

Publication number
GB693038A
GB693038A GB819650A GB819650A GB693038A GB 693038 A GB693038 A GB 693038A GB 819650 A GB819650 A GB 819650A GB 819650 A GB819650 A GB 819650A GB 693038 A GB693038 A GB 693038A
Authority
GB
United Kingdom
Prior art keywords
prop
valve
pin
pressure
arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB819650A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Publication of GB693038A publication Critical patent/GB693038A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/58—Devices for setting props or chocks
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/002—Auxiliary devices in which the prop type is not essential
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/517—Extension elements
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/58—Devices for setting props or chocks
    • E21D15/585—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/58—Devices for setting props or chocks
    • E21D15/585—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
    • E21D15/586—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/60—Devices for withdrawing props or chocks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y10T137/87925—Separable flow path section, valve or closure in each
    • Y10T137/87965—Valve- or closure-operated by coupling motion

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Check Valves (AREA)
  • Press Drives And Press Lines (AREA)
  • Earth Drilling (AREA)
GB819650A 1949-04-07 1950-03-31 Improvements relating to hydraulic pit props Expired GB693038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP39236A DE830181C (de) 1949-04-07 1949-04-07 Hydraulischer Grubenstempel sowie Vorrichtung zum Setzen und Rauben desselben

Publications (1)

Publication Number Publication Date
GB693038A true GB693038A (en) 1953-06-24

Family

ID=6603986

Family Applications (1)

Application Number Title Priority Date Filing Date
GB819650A Expired GB693038A (en) 1949-04-07 1950-03-31 Improvements relating to hydraulic pit props

Country Status (6)

Country Link
US (1) US2816728A (xx)
BE (1) BE495010A (xx)
DE (1) DE830181C (xx)
FR (2) FR989335A (xx)
GB (1) GB693038A (xx)
NL (2) NL73035C (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1061271B (de) * 1957-11-15 1959-07-16 Tecalemit Ges M B H Deutsche Fuellarmatur fuer hydraulische Grubenstempel

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1010032B (de) * 1955-02-14 1957-06-13 Dobson Ltd W E & F Abstuetzvorrichtung
DE1043252B (de) * 1956-04-27 1958-11-13 Guenther W Hammer Grundplatte fuer Grubenstempel
US2961839A (en) * 1956-08-28 1960-11-29 Fausto A Aresti Hydraulic compression member
US3148714A (en) * 1959-09-28 1964-09-15 Dowty Mining Equipment Ltd Liquid charging devices for hydraulic pit props
CN103224205B (zh) * 2013-04-01 2015-09-23 永城煤电控股集团有限公司 手拉葫芦升降装置
CN106499421B (zh) * 2016-11-03 2019-01-08 中国矿业大学 一种机械式恒阻单体支柱回撤工艺与回收方法
CN114017051B (zh) * 2021-10-11 2023-10-20 煤炭科学研究总院有限公司 支架安装车

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1208162A (en) * 1915-03-25 1916-12-12 Henry Jungjohann Pressure-recording valve.
US1544777A (en) * 1923-12-10 1925-07-07 Harry B Robinson Air coupling for pipe and hose lines
DE574822C (de) * 1931-04-19 1933-04-20 Dorstener Drahtwerke H W Brune Nachgiebiger Grubenstempel
GB453560A (en) * 1935-05-27 1936-09-14 Wilhelm Fehlemann Yieldable prop for mines
US2247843A (en) * 1937-01-18 1941-07-01 Italiana Magneti Marelli Socie Conduit coupling
BE482083A (xx) * 1947-04-24
GB636568A (en) * 1953-07-20 1950-05-03 George Herbert Dowty Improvements in pit props and other telescopic struts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1061271B (de) * 1957-11-15 1959-07-16 Tecalemit Ges M B H Deutsche Fuellarmatur fuer hydraulische Grubenstempel

Also Published As

Publication number Publication date
BE495010A (xx) 1950-08-01
FR989335A (fr) 1951-09-11
FR59692E (fr) 1954-06-29
DE830181C (de) 1952-03-27
US2816728A (en) 1957-12-17
NL73035C (xx) 1953-08-15
NL152226B (nl)

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