GB1194139A - Improvements in Hydraulically-Operated Supporting Devices for Mines - Google Patents

Improvements in Hydraulically-Operated Supporting Devices for Mines

Info

Publication number
GB1194139A
GB1194139A GB4628768A GB4628768A GB1194139A GB 1194139 A GB1194139 A GB 1194139A GB 4628768 A GB4628768 A GB 4628768A GB 4628768 A GB4628768 A GB 4628768A GB 1194139 A GB1194139 A GB 1194139A
Authority
GB
United Kingdom
Prior art keywords
prop
piston
valve
mine roof
working chambers
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
GB4628768A
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 GB1194139A publication Critical patent/GB1194139A/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
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props

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)
  • Actuator (AREA)

Abstract

1,194,139. Mine roof supports. GEWERKSCHAFT EISENHUTTE WESTFALIA. 30 Sept., 1968 [21 Oct., 1967], No. 46287/68. Heading E1P. In a mine roof support comprising a doubleacting, fluid-pressure actuated prop 1 mounted on a piston-and-cylinder unit 7 likewise actuated, the lower and upper working chambers of the unit 7 are connected to the upper and lower working chambers of the prop 1 respectively through optional supply and exhaust lines 12, 16 having branch conduits provided with one-way valves 14, 14', 20 and relief valves 13, 19 arranged as shown. The above arrangement is such that the prop is first extended against the mine roof whereupon a given setting pressure opens the valve 13 to urge the piston 9 into the mine floor. Piston 9 is first retracted before the prop is robbed by pressure fluid fed through a relief valve 19 to act on a device 15 to open the valve 14'.
GB4628768A 1967-10-21 1968-09-30 Improvements in Hydraulically-Operated Supporting Devices for Mines Expired GB1194139A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1583094 1967-10-21

Publications (1)

Publication Number Publication Date
GB1194139A true GB1194139A (en) 1970-06-10

Family

ID=5679418

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4628768A Expired GB1194139A (en) 1967-10-21 1968-09-30 Improvements in Hydraulically-Operated Supporting Devices for Mines

Country Status (1)

Country Link
GB (1) GB1194139A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118603A (en) * 1982-04-06 1983-11-02 Gewerk Eisenhuette Westfalia Control apparatus
GB2184766A (en) * 1985-12-28 1987-07-01 Bergwerksverband Gmbh Finishing control for face supports
GB2205130A (en) * 1987-05-28 1988-11-30 Bauakademie Ddr Hydraulic lifting cylinder

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118603A (en) * 1982-04-06 1983-11-02 Gewerk Eisenhuette Westfalia Control apparatus
GB2184766A (en) * 1985-12-28 1987-07-01 Bergwerksverband Gmbh Finishing control for face supports
GB2184766B (en) * 1985-12-28 1989-03-30 Bergwerksverband Gmbh Finishing control for face supports
GB2205130A (en) * 1987-05-28 1988-11-30 Bauakademie Ddr Hydraulic lifting cylinder
FR2615844A1 (en) * 1987-05-28 1988-12-02 Bauakademie Ddr HYDRAULIC LIFTING JACK
GB2205130B (en) * 1987-05-28 1991-09-18 Bauakademie Ddr Hydraulic lifting cylinder

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee