FR2322319A1 - Soupape de detente reliant les deux verins d'un etancon hydraulique telescopique a deux etages - Google Patents

Soupape de detente reliant les deux verins d'un etancon hydraulique telescopique a deux etages

Info

Publication number
FR2322319A1
FR2322319A1 FR7625142A FR7625142A FR2322319A1 FR 2322319 A1 FR2322319 A1 FR 2322319A1 FR 7625142 A FR7625142 A FR 7625142A FR 7625142 A FR7625142 A FR 7625142A FR 2322319 A1 FR2322319 A1 FR 2322319A1
Authority
FR
France
Prior art keywords
cylinders
relief valve
telescopic hydraulic
valve connecting
stage telescopic
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.)
Granted
Application number
FR7625142A
Other languages
English (en)
French (fr)
Other versions
FR2322319B1 (enExample
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.)
Saarbergwerke AG
Original Assignee
Saarbergwerke AG
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 Saarbergwerke AG filed Critical Saarbergwerke AG
Publication of FR2322319A1 publication Critical patent/FR2322319A1/fr
Application granted granted Critical
Publication of FR2322319B1 publication Critical patent/FR2322319B1/fr
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Control Of Presses (AREA)
  • Safety Valves (AREA)
FR7625142A 1975-08-23 1976-08-16 Soupape de detente reliant les deux verins d'un etancon hydraulique telescopique a deux etages Granted FR2322319A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752537715 DE2537715C3 (de) 1975-08-23 1975-08-23 Druckminderventilanordnung und -ausbildung für die Verbindung der beiden Druckräume eines zweistufigen teleskopischen Grubenstempels

Publications (2)

Publication Number Publication Date
FR2322319A1 true FR2322319A1 (fr) 1977-03-25
FR2322319B1 FR2322319B1 (enExample) 1982-05-14

Family

ID=5954757

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7625142A Granted FR2322319A1 (fr) 1975-08-23 1976-08-16 Soupape de detente reliant les deux verins d'un etancon hydraulique telescopique a deux etages

Country Status (3)

Country Link
DE (1) DE2537715C3 (enExample)
FR (1) FR2322319A1 (enExample)
GB (1) GB1553682A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0367461A1 (en) * 1988-11-01 1990-05-09 Sun Hydraulics Corporation Pressure control valve

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA804072B (en) * 1979-08-07 1981-06-24 Dobson Park Ind Telescoping jack
GB2176845B (en) * 1985-06-21 1989-04-26 600 Group Plc The Improvements in telescopic devices such as crane jibs

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2359017A (en) * 1942-03-04 1944-09-26 Landis Tool Co Relief valve
DE932784C (de) * 1949-12-28 1955-09-08 Doering G M B H Hydraulischer Grubenstempel mit Pressluftbedienung
FR1112062A (fr) * 1954-04-12 1956-03-08 Klockner Bergbau Victor Ickern Installation pour le soutènement progressif à l'avancement de travaux souterrains ou analogues
GB882802A (en) * 1958-09-09 1961-11-22 Bwg Bergwerk Walzwerk Improvements in and relating to telescopic hydraulic pit-prop
FR78068E (fr) * 1960-06-11 1962-06-01 Gutehoffnungshuette Sterkrade étançon de mine télescopique hydraulique en plusieurs parties
CH452356A (de) * 1965-03-02 1968-05-31 May Pressenbau Gmbh Hydraulische Überlastungssicherung für Pressen
FR2129538A5 (enExample) * 1971-03-11 1972-10-27 Bergwerksverband Gmbh
FR2152589A1 (enExample) * 1971-09-17 1973-04-27 Gewerk Eisenhuette Westfalia
FR2264462A7 (en) * 1974-02-18 1975-10-10 Midi Houilleres Loire Hou Cent Safety valve for hydraulic mine prop - has truncated conical spring loaded piston and radial outlets
FR2286943A1 (fr) * 1974-10-04 1976-04-30 Hemscheidt Maschf Hermann Soupape de commande pour un soutenement de taille hydrauliquement marchant

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2359017A (en) * 1942-03-04 1944-09-26 Landis Tool Co Relief valve
DE932784C (de) * 1949-12-28 1955-09-08 Doering G M B H Hydraulischer Grubenstempel mit Pressluftbedienung
FR1112062A (fr) * 1954-04-12 1956-03-08 Klockner Bergbau Victor Ickern Installation pour le soutènement progressif à l'avancement de travaux souterrains ou analogues
GB882802A (en) * 1958-09-09 1961-11-22 Bwg Bergwerk Walzwerk Improvements in and relating to telescopic hydraulic pit-prop
FR78068E (fr) * 1960-06-11 1962-06-01 Gutehoffnungshuette Sterkrade étançon de mine télescopique hydraulique en plusieurs parties
CH452356A (de) * 1965-03-02 1968-05-31 May Pressenbau Gmbh Hydraulische Überlastungssicherung für Pressen
FR2129538A5 (enExample) * 1971-03-11 1972-10-27 Bergwerksverband Gmbh
FR2152589A1 (enExample) * 1971-09-17 1973-04-27 Gewerk Eisenhuette Westfalia
FR2264462A7 (en) * 1974-02-18 1975-10-10 Midi Houilleres Loire Hou Cent Safety valve for hydraulic mine prop - has truncated conical spring loaded piston and radial outlets
FR2286943A1 (fr) * 1974-10-04 1976-04-30 Hemscheidt Maschf Hermann Soupape de commande pour un soutenement de taille hydrauliquement marchant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0367461A1 (en) * 1988-11-01 1990-05-09 Sun Hydraulics Corporation Pressure control valve

Also Published As

Publication number Publication date
DE2537715C3 (de) 1980-11-06
GB1553682A (en) 1979-09-26
DE2537715A1 (de) 1977-03-03
FR2322319B1 (enExample) 1982-05-14
DE2537715B2 (de) 1980-03-13

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Legal Events

Date Code Title Description
ST Notification of lapse