PL90941B1 - - Google Patents

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Publication number
PL90941B1
PL90941B1 PL1974169066A PL16906674A PL90941B1 PL 90941 B1 PL90941 B1 PL 90941B1 PL 1974169066 A PL1974169066 A PL 1974169066A PL 16906674 A PL16906674 A PL 16906674A PL 90941 B1 PL90941 B1 PL 90941B1
Authority
PL
Poland
Prior art keywords
box
base plate
stands
excavation
group
Prior art date
Application number
PL1974169066A
Other languages
English (en)
Polish (pl)
Original Assignee
Becorit Grubenausbau Gmbh 4350 Recklinghausen
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 Becorit Grubenausbau Gmbh 4350 Recklinghausen filed Critical Becorit Grubenausbau Gmbh 4350 Recklinghausen
Publication of PL90941B1 publication Critical patent/PL90941B1/pl

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
    • E21D23/0043—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 two or more rows 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
    • E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
PL1974169066A 1973-02-27 1974-02-25 PL90941B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2309670A DE2309670C2 (de) 1973-02-27 1973-02-27 Mit einer Versatzabschirmung versehenes Ausbaugestell für den Strebausbau im untertägigen Grubenbetrieb

Publications (1)

Publication Number Publication Date
PL90941B1 true PL90941B1 (de) 1977-02-28

Family

ID=5873203

Family Applications (1)

Application Number Title Priority Date Filing Date
PL1974169066A PL90941B1 (de) 1973-02-27 1974-02-25

Country Status (7)

Country Link
US (1) US3908389A (de)
JP (1) JPS547487B2 (de)
CS (1) CS202030B2 (de)
DE (1) DE2309670C2 (de)
GB (1) GB1418432A (de)
PL (1) PL90941B1 (de)
ZA (1) ZA74423B (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1516637A (en) * 1974-11-23 1978-07-05 Gullick Dobson Ltd Mine roof supports
DE2850073A1 (de) * 1978-11-18 1980-05-29 Fletcher Sutcliffe Wild Ltd Grubenausbau, insbesondere strebausbau
GB2136040B (en) * 1983-03-08 1986-06-11 Dobson Park Ind Pivotal linkage of a mine roof support
CN104213929A (zh) * 2014-08-21 2014-12-17 四川省华蓥山煤业股份有限公司李子垭南煤矿 一种大倾角煤层综采支架及支护方法
CN105065046B (zh) * 2015-07-13 2017-07-18 辽宁工程技术大学 一种液压支架邻架间柔性防护装置
CN106761870A (zh) * 2016-11-19 2017-05-31 无锡市洗选设备厂 洗砂机支架组件
CN106499425A (zh) * 2016-11-19 2017-03-15 无锡市洗选设备厂 洗砂机的液压支护组件

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1036663A (en) * 1964-04-03 1966-07-20 Gullick Ltd Improvements in or relating to mine roof and like supports
GB1124665A (en) * 1966-04-29 1968-08-21 Gullick Ltd Improvements in or relating to mine roof supports
BE789390A (fr) * 1971-10-02 1973-01-15 Gewerk Eisenhuette Westfalia Chassis de soutenement a boucliers

Also Published As

Publication number Publication date
GB1418432A (en) 1975-12-17
CS202030B2 (en) 1980-12-31
DE2309670C2 (de) 1974-09-05
US3908389A (en) 1975-09-30
DE2309670B1 (de) 1974-02-14
JPS547487B2 (de) 1979-04-07
DE2309670A1 (de) 1974-02-14
ZA74423B (en) 1974-11-27
JPS49117302A (de) 1974-11-09

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