NL6607724A - - Google Patents

Info

Publication number
NL6607724A
NL6607724A NL6607724A NL6607724A NL6607724A NL 6607724 A NL6607724 A NL 6607724A NL 6607724 A NL6607724 A NL 6607724A NL 6607724 A NL6607724 A NL 6607724A NL 6607724 A NL6607724 A NL 6607724A
Authority
NL
Netherlands
Application number
NL6607724A
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 filed Critical
Publication of NL6607724A publication Critical patent/NL6607724A/xx

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
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0073—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices with advancing shifting devices connected therewith
    • 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
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • 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
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F13/00—Transport specially adapted to underground conditions
    • E21F13/08—Shifting conveyors or other transport devices from one location at the working face to another
    • E21F13/086—Armoured conveyors shifting devices

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)
  • Control Of Conveyors (AREA)
  • Framework For Endless Conveyors (AREA)
NL6607724A 1965-06-10 1966-06-03 NL6607724A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG43831A DE1239649B (de) 1965-06-10 1965-06-10 Rueckvorrichtung fuer Strebfoerderer

Publications (1)

Publication Number Publication Date
NL6607724A true NL6607724A (xx) 1966-12-12

Family

ID=7127285

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6607724A NL6607724A (xx) 1965-06-10 1966-06-03

Country Status (5)

Country Link
US (1) US3381586A (xx)
BE (1) BE682366A (xx)
DE (1) DE1239649B (xx)
GB (1) GB1131356A (xx)
NL (1) NL6607724A (xx)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958495A (en) * 1972-08-31 1976-05-25 Koehring Company Air-oil amplifier
US3968732A (en) * 1972-11-10 1976-07-13 Fitzgerald William Maurice Bar Hydraulic power transmission system
US3855808A (en) * 1973-09-12 1974-12-24 G Alacchi Shifting system for walking supports
DE2803907C3 (de) * 1978-01-30 1982-09-23 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Lösbare Gelenkverbindung für den untertägigen Bergbau und ihre Verwendung an einem Strebausbaugestell
FR2501765A1 (fr) * 1981-03-10 1982-09-17 Mecanismes Comp Ind De Serrure, notamment pour portiere de vehicule automobile
CN104894929A (zh) * 2015-06-13 2015-09-09 安徽圣力达电器有限公司 复合型水泥道板地滚托架
CN109026112B (zh) * 2018-10-12 2024-03-08 辽宁威跃集团机械制造有限公司 煤矿液压支架调向回收装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2593039A (en) * 1949-07-26 1952-04-15 Bendix Aviat Corp Valve for sequential operation of hydraulic motors
DE1191777B (de) * 1962-03-21 1965-04-29 Salzgitter Maschinen Ag Hydraulischer Ausbaurahmen fuer Strebabbaue unter Tage

Also Published As

Publication number Publication date
BE682366A (xx) 1966-12-12
US3381586A (en) 1968-05-07
GB1131356A (en) 1968-10-23
DE1239649B (de) 1967-05-03

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