ES407051A1 - Unidad de entibacion de escudo susceptible de ser avanzada. - Google Patents

Unidad de entibacion de escudo susceptible de ser avanzada.

Info

Publication number
ES407051A1
ES407051A1 ES407051A ES407051A ES407051A1 ES 407051 A1 ES407051 A1 ES 407051A1 ES 407051 A ES407051 A ES 407051A ES 407051 A ES407051 A ES 407051A ES 407051 A1 ES407051 A1 ES 407051A1
Authority
ES
Spain
Prior art keywords
shield
mines
supported
shield support
roof head
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
ES407051A
Other languages
English (en)
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.)
Banyaszati Kutato Intezet
Original Assignee
Banyaszati Kutato Intezet
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 Banyaszati Kutato Intezet filed Critical Banyaszati Kutato Intezet
Publication of ES407051A1 publication Critical patent/ES407051A1/es
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
    • E21D23/04—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
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
    • E21D23/063—Retractable cantilever extensions therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/082—Cap joints for obtaining a coal-face free of pit-props of sliding type

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)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
ES407051A 1971-09-28 1972-09-27 Unidad de entibacion de escudo susceptible de ser avanzada. Expired ES407051A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUBA002649 HU176912B (hu) 1971-09-28 1971-09-28 Peredvizhnoj mekhanizm kreplenija hhita

Publications (1)

Publication Number Publication Date
ES407051A1 true ES407051A1 (es) 1975-11-16

Family

ID=10993334

Family Applications (1)

Application Number Title Priority Date Filing Date
ES407051A Expired ES407051A1 (es) 1971-09-28 1972-09-27 Unidad de entibacion de escudo susceptible de ser avanzada.

Country Status (11)

Country Link
JP (1) JPS565920B2 (ja)
AT (1) AT320565B (ja)
BE (1) BE789315A (ja)
CS (1) CS157005B2 (ja)
DE (2) DE2244911C3 (ja)
ES (1) ES407051A1 (ja)
GB (1) GB1381198A (ja)
HU (1) HU176912B (ja)
PL (1) PL78410B1 (ja)
RO (1) RO60607A (ja)
YU (1) YU35181B (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833532B2 (ja) * 1975-02-26 1983-07-20 キヤノン株式会社 ダイコウケイズ−ムレンズ
DE2634014C3 (de) * 1976-07-29 1981-03-26 Gewerkschaft Eisenhütte Westfalia GmbH, 4670 Lünen Schildausbaugestell
JPS53131852A (en) * 1977-04-22 1978-11-17 Nippon Chemical Ind Tele zoom lens
JPS60419A (ja) * 1984-04-20 1985-01-05 Nippon Kogaku Kk <Nikon> 望遠ズ−ムレンズ
JPH0629907B2 (ja) * 1985-08-22 1994-04-20 キヤノン株式会社 大口径比のズ−ムレンズ
CN101943016A (zh) * 2010-08-17 2011-01-12 天地科技股份有限公司 极薄煤层新型掩护式综采液压支架
CN104858007B (zh) * 2015-06-04 2017-08-18 中煤张家口煤矿机械有限责任公司 综采工作面输送卸载区电直驱齿辊式连续破碎装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1257722B (de) * 1966-02-16 1968-01-04 Hansjoachim Von Hippel Dr Ing Unter Last rueckbarer Stempelausbau
FR1503990A (fr) * 1966-10-11 1967-12-01 Bennes Marrel Perfectionnements aux piles de soutènement, notamment pour les mines ou pour les chantiers souterrains

Also Published As

Publication number Publication date
CS157005B2 (ja) 1974-08-23
PL78410B1 (en) 1975-06-30
YU35181B (en) 1980-09-25
YU244872A (en) 1979-12-31
DE7233741U (de) 1982-07-15
RO60607A (ja) 1976-10-15
GB1381198A (en) 1975-01-22
DE2244911C3 (de) 1981-08-20
JPS565920B2 (ja) 1981-02-07
BE789315A (fr) 1973-01-15
DE2244911B2 (de) 1980-10-02
AT320565B (de) 1975-02-25
JPS4841902A (ja) 1973-06-19
HU176912B (hu) 1981-06-28
DE2244911A1 (de) 1973-04-05

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