FR2265971A1 - Hydraulic prop for mine working - has arm between flexible base and head plate vertically adjusted by hydraulic cylinders - Google Patents

Hydraulic prop for mine working - has arm between flexible base and head plate vertically adjusted by hydraulic cylinders

Info

Publication number
FR2265971A1
FR2265971A1 FR7411882A FR7411882A FR2265971A1 FR 2265971 A1 FR2265971 A1 FR 2265971A1 FR 7411882 A FR7411882 A FR 7411882A FR 7411882 A FR7411882 A FR 7411882A FR 2265971 A1 FR2265971 A1 FR 2265971A1
Authority
FR
France
Prior art keywords
arm
hydraulic
head plate
base
hydraulic cylinders
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
FR7411882A
Other languages
French (fr)
Other versions
FR2265971B3 (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.)
Bennes Marrel SA
Original Assignee
Bennes Marrel SA
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 Bennes Marrel SA filed Critical Bennes Marrel SA
Priority to FR7411882A priority Critical patent/FR2265971A1/en
Priority to DE19752513612 priority patent/DE2513612A1/en
Publication of FR2265971A1 publication Critical patent/FR2265971A1/en
Application granted granted Critical
Publication of FR2265971B3 publication Critical patent/FR2265971B3/fr
Granted legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D23/0039—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 and supported by a strut or by a row of struts parallel to the working face
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D23/0427—Shield operating devices; Hinges therefor

Abstract

Hydraulic prop for mines includes a base resting on the floor to which is attached an arm pivoted in vertical plane by hydraulic cylinders and pivotably supporting with its top free end a head plate for supporting the roof. The arm and the head plate are comparatively wide and the arm which is freely mounted in bearings of the base is vertically adjusted by two hydraulic cylinders. The base consists of two parts flexibly joined together of which each is supporting one hydraulic cylinder. The bearings by which the arm is attached to the base are so formed that they allow relative displacement of the flexibly joined parts of the base.
FR7411882A 1974-03-28 1974-03-28 Hydraulic prop for mine working - has arm between flexible base and head plate vertically adjusted by hydraulic cylinders Granted FR2265971A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7411882A FR2265971A1 (en) 1974-03-28 1974-03-28 Hydraulic prop for mine working - has arm between flexible base and head plate vertically adjusted by hydraulic cylinders
DE19752513612 DE2513612A1 (en) 1974-03-28 1975-03-27 HYDRAULIC STAMP

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7411882A FR2265971A1 (en) 1974-03-28 1974-03-28 Hydraulic prop for mine working - has arm between flexible base and head plate vertically adjusted by hydraulic cylinders

Publications (2)

Publication Number Publication Date
FR2265971A1 true FR2265971A1 (en) 1975-10-24
FR2265971B3 FR2265971B3 (en) 1976-04-09

Family

ID=9137269

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7411882A Granted FR2265971A1 (en) 1974-03-28 1974-03-28 Hydraulic prop for mine working - has arm between flexible base and head plate vertically adjusted by hydraulic cylinders

Country Status (2)

Country Link
DE (1) DE2513612A1 (en)
FR (1) FR2265971A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2753059A1 (en) * 1976-12-07 1978-06-08 Charbonnages De France POST, WHICH CAN BE TRAVELED BY OUR OWN DRIVE MECHANISM
CN109026094A (en) * 2018-07-20 2018-12-18 河北充填采矿技术有限公司 A kind of auxiliary shoring device and method for protecting support that back inclination angle is adaptive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2753059A1 (en) * 1976-12-07 1978-06-08 Charbonnages De France POST, WHICH CAN BE TRAVELED BY OUR OWN DRIVE MECHANISM
CN109026094A (en) * 2018-07-20 2018-12-18 河北充填采矿技术有限公司 A kind of auxiliary shoring device and method for protecting support that back inclination angle is adaptive

Also Published As

Publication number Publication date
DE2513612A1 (en) 1975-10-02
FR2265971B3 (en) 1976-04-09

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