FR1126394A - étançon de mine hydraulique en plusieurs pièces - Google Patents

étançon de mine hydraulique en plusieurs pièces

Info

Publication number
FR1126394A
FR1126394A FR1126394DA FR1126394A FR 1126394 A FR1126394 A FR 1126394A FR 1126394D A FR1126394D A FR 1126394DA FR 1126394 A FR1126394 A FR 1126394A
Authority
FR
France
Prior art keywords
mine prop
piece hydraulic
hydraulic mine
piece
prop
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
Application number
Other languages
English (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.)
Gutehoffnungshutte Sterkrade AG
Original Assignee
Gutehoffnungshutte Sterkrade 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 Gutehoffnungshutte Sterkrade AG filed Critical Gutehoffnungshutte Sterkrade AG
Application granted granted Critical
Publication of FR1126394A publication Critical patent/FR1126394A/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
    • E21D15/58—Devices for setting props or chocks
    • E21D15/585—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
    • E21D15/586—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded
    • E21D15/587—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded by means of power accumulators to be pre-charged by rock pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
FR1126394D 1954-06-26 1955-06-24 étançon de mine hydraulique en plusieurs pièces Expired FR1126394A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1126394X 1954-06-26

Publications (1)

Publication Number Publication Date
FR1126394A true FR1126394A (fr) 1956-11-21

Family

ID=7725142

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1126394D Expired FR1126394A (fr) 1954-06-26 1955-06-24 étançon de mine hydraulique en plusieurs pièces

Country Status (1)

Country Link
FR (1) FR1126394A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930582A (en) * 1957-08-26 1960-03-29 Walter W Foster Vertical load suspension and adjusting mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930582A (en) * 1957-08-26 1960-03-29 Walter W Foster Vertical load suspension and adjusting mechanism

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