DE3715781C2 - - Google Patents

Info

Publication number
DE3715781C2
DE3715781C2 DE19873715781 DE3715781A DE3715781C2 DE 3715781 C2 DE3715781 C2 DE 3715781C2 DE 19873715781 DE19873715781 DE 19873715781 DE 3715781 A DE3715781 A DE 3715781A DE 3715781 C2 DE3715781 C2 DE 3715781C2
Authority
DE
Germany
Prior art keywords
cylinder
pressure
line
annular space
piston chamber
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 - Lifetime
Application number
DE19873715781
Other languages
German (de)
English (en)
Other versions
DE3715781A1 (de
Inventor
Walter 4600 Dortmund De Weirich
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.)
Caterpillar Global Mining Europe 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
Priority to DE19873715781 priority Critical patent/DE3715781A1/de
Priority to DE8717811U priority patent/DE8717811U1/de
Publication of DE3715781A1 publication Critical patent/DE3715781A1/de
Application granted granted Critical
Publication of DE3715781C2 publication Critical patent/DE3715781C2/de
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
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F13/00—Transport specially adapted to underground conditions
    • E21F13/10—Anchorings for conveyors

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)
  • Fluid-Pressure Circuits (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
DE19873715781 1987-05-12 1987-05-12 Abspanneinrichtung Granted DE3715781A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19873715781 DE3715781A1 (de) 1987-05-12 1987-05-12 Abspanneinrichtung
DE8717811U DE8717811U1 (de) 1987-05-12 1987-05-12 Abspanneinrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873715781 DE3715781A1 (de) 1987-05-12 1987-05-12 Abspanneinrichtung

Publications (2)

Publication Number Publication Date
DE3715781A1 DE3715781A1 (de) 1988-11-24
DE3715781C2 true DE3715781C2 (enrdf_load_stackoverflow) 1991-09-12

Family

ID=6327340

Family Applications (2)

Application Number Title Priority Date Filing Date
DE8717811U Expired - Lifetime DE8717811U1 (de) 1987-05-12 1987-05-12 Abspanneinrichtung
DE19873715781 Granted DE3715781A1 (de) 1987-05-12 1987-05-12 Abspanneinrichtung

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE8717811U Expired - Lifetime DE8717811U1 (de) 1987-05-12 1987-05-12 Abspanneinrichtung

Country Status (1)

Country Link
DE (2) DE8717811U1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19937252B4 (de) * 1999-08-06 2007-04-19 Dbt Gmbh Abspanneinrichtung für Förder- und/oder Gewinnungsanlagen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114060330B (zh) * 2021-11-15 2024-04-30 中铁工程装备集团有限公司 盾构机液压推进装置及液压推进系统

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2712388C2 (de) * 1977-03-22 1986-04-10 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Abspanneinrichtung für Förder- und/oder Gewinnungsanlagen in untertägigen Gewinnungsbetrieben

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19937252B4 (de) * 1999-08-06 2007-04-19 Dbt Gmbh Abspanneinrichtung für Förder- und/oder Gewinnungsanlagen

Also Published As

Publication number Publication date
DE8717811U1 (de) 1990-04-12
DE3715781A1 (de) 1988-11-24

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8125 Change of the main classification

Ipc: E21F 13/10

D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: WESTFALIA BECORIT INDUSTRIETECHNIK GMBH, 4670 LUEN

8327 Change in the person/name/address of the patent owner

Owner name: DBT DEUTSCHE BERGBAU-TECHNIK GMBH, 45128 ESSEN, DE

8327 Change in the person/name/address of the patent owner

Owner name: DBT GMBH, 44534 LUENEN, DE

8339 Ceased/non-payment of the annual fee