FR2152589A1 - - Google Patents

Info

Publication number
FR2152589A1
FR2152589A1 FR7230906A FR7230906A FR2152589A1 FR 2152589 A1 FR2152589 A1 FR 2152589A1 FR 7230906 A FR7230906 A FR 7230906A FR 7230906 A FR7230906 A FR 7230906A FR 2152589 A1 FR2152589 A1 FR 2152589A1
Authority
FR
France
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.)
Granted
Application number
FR7230906A
Other languages
French (fr)
Other versions
FR2152589B1 (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 FR2152589A1 publication Critical patent/FR2152589A1/fr
Application granted granted Critical
Publication of FR2152589B1 publication Critical patent/FR2152589B1/fr
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
    • E21D15/50—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
    • E21D15/512—Arrangement of valves

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)
  • Safety Valves (AREA)
  • Control Of Presses (AREA)
FR7230906A 1971-09-17 1972-08-31 Expired FR2152589B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2146502A DE2146502C3 (en) 1971-09-17 1971-09-17 Valve arrangement for setting hydraulic pit rams with high setting force

Publications (2)

Publication Number Publication Date
FR2152589A1 true FR2152589A1 (en) 1973-04-27
FR2152589B1 FR2152589B1 (en) 1974-08-19

Family

ID=5819839

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7230906A Expired FR2152589B1 (en) 1971-09-17 1972-08-31

Country Status (4)

Country Link
US (1) US3776098A (en)
DE (1) DE2146502C3 (en)
FR (1) FR2152589B1 (en)
GB (1) GB1409751A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2322319A1 (en) * 1975-08-23 1977-03-25 Saarbergwerke Ag RELIEF VALVE CONNECTING THE TWO CYLINDERS OF A TWO-STAGE TELESCOPIC HYDRAULIC SEAL
FR2408031A1 (en) * 1977-11-04 1979-06-01 Gewerk Eisenhuette Westfalia CONTROL DEVICE FOR HYDRAULIC SUPPORT IN THE FORM OF STREAKS OR SIMILAR ASSEMBLY
FR2455673A2 (en) * 1979-04-12 1980-11-28 Gewerk Eisenhuette Westfalia CONTROL DEVICE FOR HYDRAULIC SUPPORT IN THE FORM OF STANDARDS OR THE LIKE

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007826A (en) * 1976-04-02 1977-02-15 Stephens-Adamson, Inc. Dual pressure take-up apparatus and system for dual belt conveyor-elevator
US4089171A (en) * 1976-05-24 1978-05-16 Webster Electric Company, Inc. Four position valve assembly
DE2724264C2 (en) * 1977-05-28 1985-12-19 Robert Bosch Gmbh, 7000 Stuttgart Follow-up adjustment device for a hydraulic machine
DE2830510C3 (en) * 1978-07-12 1981-07-23 Bergwerksverband Gmbh, 4300 Essen Method and valve arrangement for setting the stamps of a walking support
DE3015411C2 (en) * 1980-04-22 1982-10-28 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Stamp control
DE3123278C1 (en) * 1981-06-12 1982-12-16 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Control for a hydraulic prop of a self-advancing support assembly
GB2137314B (en) * 1983-03-26 1986-07-23 Dobson Park Ind Valve for mine support
GB2214988A (en) * 1988-02-13 1989-09-13 Gullick Dobson Ltd Control system for hydraulic mine roof support
DE10328286B4 (en) * 2003-06-23 2015-05-13 Caterpillar Global Mining Europe Gmbh Hydraulic shield removal
CN110716591A (en) * 2019-11-20 2020-01-21 南理工泰兴智能制造研究院有限公司 Pressure regulating device of mine working environment and safety artificial intelligence simulation equipment

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1103036A (en) * 1912-06-07 1914-07-14 Bridgeport Brass Co Controlling mechanism for hydraulic presses and the like.
US1428998A (en) * 1921-04-25 1922-09-12 Buckeye Iron & Brass Works Valve for cake-forming presses
US1805367A (en) * 1929-04-18 1931-05-12 Ronald T King Automatically operated press
US2391930A (en) * 1942-12-01 1946-01-01 Albert R Stone Power transmission system
DE1135849B (en) * 1958-05-22 1962-09-06 Kronprinz Ag Process and filling device for setting and loading purely hydraulic pit punches

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2322319A1 (en) * 1975-08-23 1977-03-25 Saarbergwerke Ag RELIEF VALVE CONNECTING THE TWO CYLINDERS OF A TWO-STAGE TELESCOPIC HYDRAULIC SEAL
FR2408031A1 (en) * 1977-11-04 1979-06-01 Gewerk Eisenhuette Westfalia CONTROL DEVICE FOR HYDRAULIC SUPPORT IN THE FORM OF STREAKS OR SIMILAR ASSEMBLY
FR2455673A2 (en) * 1979-04-12 1980-11-28 Gewerk Eisenhuette Westfalia CONTROL DEVICE FOR HYDRAULIC SUPPORT IN THE FORM OF STANDARDS OR THE LIKE

Also Published As

Publication number Publication date
FR2152589B1 (en) 1974-08-19
GB1409751A (en) 1975-10-15
DE2146502A1 (en) 1973-03-22
US3776098A (en) 1973-12-04
DE2146502C3 (en) 1982-04-29
DE2146502B2 (en) 1979-08-30

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Legal Events

Date Code Title Description
ST Notification of lapse