FR2257776B1 - - Google Patents

Info

Publication number
FR2257776B1
FR2257776B1 FR7400787A FR7400787A FR2257776B1 FR 2257776 B1 FR2257776 B1 FR 2257776B1 FR 7400787 A FR7400787 A FR 7400787A FR 7400787 A FR7400787 A FR 7400787A FR 2257776 B1 FR2257776 B1 FR 2257776B1
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.)
Expired
Application number
FR7400787A
Other languages
French (fr)
Other versions
FR2257776A1 (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.)
NORD PAS CALAIS HOUILLERES
Original Assignee
NORD PAS CALAIS HOUILLERES
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 NORD PAS CALAIS HOUILLERES filed Critical NORD PAS CALAIS HOUILLERES
Priority to FR7400787A priority Critical patent/FR2257776A1/fr
Priority to DE19752500150 priority patent/DE2500150A1/de
Publication of FR2257776A1 publication Critical patent/FR2257776A1/fr
Application granted granted Critical
Publication of FR2257776B1 publication Critical patent/FR2257776B1/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
    • E21D23/0004—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
    • E21D23/0017—Pile type supports
    • E21D23/0021—Pile type supports comprising two walking elements
    • 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
    • E21D23/0034—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 comprising a goaf shield articulated to a base member
    • 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
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/0409—Aligning or guiding means for the supports or for the constitutive parts of the supports

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)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
FR7400787A 1974-01-10 1974-01-10 Base frame for self advancing roof support - is fitted with two guide frames joined by longitudinal and lateral linkage Granted FR2257776A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7400787A FR2257776A1 (en) 1974-01-10 1974-01-10 Base frame for self advancing roof support - is fitted with two guide frames joined by longitudinal and lateral linkage
DE19752500150 DE2500150A1 (de) 1974-01-10 1975-01-03 Grundrahmen fuer schreitendes ausbauelement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7400787A FR2257776A1 (en) 1974-01-10 1974-01-10 Base frame for self advancing roof support - is fitted with two guide frames joined by longitudinal and lateral linkage

Publications (2)

Publication Number Publication Date
FR2257776A1 FR2257776A1 (en) 1975-08-08
FR2257776B1 true FR2257776B1 (da) 1982-08-13

Family

ID=9133308

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7400787A Granted FR2257776A1 (en) 1974-01-10 1974-01-10 Base frame for self advancing roof support - is fitted with two guide frames joined by longitudinal and lateral linkage

Country Status (2)

Country Link
DE (1) DE2500150A1 (da)
FR (1) FR2257776A1 (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2646563C3 (de) * 1976-10-15 1979-08-09 Bochumer Eisenhuette Heintzmann Gmbh & Co, 4630 Bochum Ausbau für den Saumbereich eines Strebs
DE3034645A1 (de) * 1980-09-13 1982-04-29 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Schreitwerk fuer einen schreitausbau, insbesondere fuer einen schild- oder bockausbau
FR2539810B1 (fr) * 1983-01-25 1985-08-30 Manche Atel Chantiers Pile mobile de soutenement a lemniscate a embase en deux elements pouvant etre ripes independamment l'un de l'autre

Also Published As

Publication number Publication date
DE2500150A1 (de) 1975-07-17
FR2257776A1 (en) 1975-08-08

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Legal Events

Date Code Title Description
ST Notification of lapse