ES362787A1 - Improvements in or relating to hydraulically-advanceable roof-supports, particularly for use in mines - Google Patents

Improvements in or relating to hydraulically-advanceable roof-supports, particularly for use in mines

Info

Publication number
ES362787A1
ES362787A1 ES362787A ES362787A ES362787A1 ES 362787 A1 ES362787 A1 ES 362787A1 ES 362787 A ES362787 A ES 362787A ES 362787 A ES362787 A ES 362787A ES 362787 A1 ES362787 A1 ES 362787A1
Authority
ES
Spain
Prior art keywords
block
mines
hydraulically
relating
supports
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
ES362787A
Other languages
Spanish (es)
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.)
FIMA HERMANN HEMSCHEIDT MASCHI
Original Assignee
FIMA HERMANN HEMSCHEIDT MASCHI
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
Priority claimed from DE19681583800 external-priority patent/DE1583800A1/en
Application filed by FIMA HERMANN HEMSCHEIDT MASCHI filed Critical FIMA HERMANN HEMSCHEIDT MASCHI
Publication of ES362787A1 publication Critical patent/ES362787A1/en
Expired 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
    • E21D23/006—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
    • E21D23/0078—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 individual 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)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Support Of The Bearing (AREA)

Abstract

An advancing mine roof support is provided with an advancing ram 1 which is mounted in a spherical bearing 2 and pivotably connected to a bearing block 5. The block 5 is connected by a pair of pivotal thrust rods, see Fig. 2 (not shown), to the conveyor 7 whilst an elastically flexible guide rod 10 mounted on the conveyor passes through a friction bearing 14 in the block 5 and is guided in lugs 15, 16 to accommodate misalignment and relieve the ram of undesirable stresses, see also Fig. 4 (not shown).
ES362787A 1968-02-29 1969-01-21 Improvements in or relating to hydraulically-advanceable roof-supports, particularly for use in mines Expired ES362787A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681583800 DE1583800A1 (en) 1968-02-29 1968-02-29 Back device for hydraulic expansion units

Publications (1)

Publication Number Publication Date
ES362787A1 true ES362787A1 (en) 1970-11-16

Family

ID=5679560

Family Applications (1)

Application Number Title Priority Date Filing Date
ES362787A Expired ES362787A1 (en) 1968-02-29 1969-01-21 Improvements in or relating to hydraulically-advanceable roof-supports, particularly for use in mines

Country Status (4)

Country Link
BE (1) BE725517A (en)
ES (1) ES362787A1 (en)
FR (1) FR1597857A (en)
GB (1) GB1248967A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112597677B (en) * 2020-12-11 2022-12-27 重庆大学 Method for judging maximum control jacking distance of coal mine tunneling working face

Also Published As

Publication number Publication date
GB1248967A (en) 1971-10-06
BE725517A (en) 1969-05-29
FR1597857A (en) 1970-06-29

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