ZA74423B - Improvements in or relating to a mine roof support - Google Patents
Improvements in or relating to a mine roof supportInfo
- Publication number
- ZA74423B ZA74423B ZA740423A ZA74423A ZA74423B ZA 74423 B ZA74423 B ZA 74423B ZA 740423 A ZA740423 A ZA 740423A ZA 74423 A ZA74423 A ZA 74423A ZA 74423 B ZA74423 B ZA 74423B
- Authority
- ZA
- South Africa
- Prior art keywords
- relating
- roof support
- mine roof
- mine
- support
- Prior art date
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
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 |
---|---|
ZA74423B true ZA74423B (en) | 1974-11-27 |
Family
ID=5873203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA740423A ZA74423B (en) | 1973-02-27 | 1974-01-21 | Improvements in or relating to a mine roof support |
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)
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)
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 |
-
1973
- 1973-02-27 DE DE2309670A patent/DE2309670C2/de not_active Expired
-
1974
- 1974-01-11 US US441485*A patent/US3908389A/en not_active Expired - Lifetime
- 1974-01-21 ZA ZA740423A patent/ZA74423B/xx unknown
- 1974-01-30 GB GB423374A patent/GB1418432A/en not_active Expired
- 1974-02-05 CS CS74790A patent/CS202030B2/cs unknown
- 1974-02-22 JP JP2130174A patent/JPS547487B2/ja not_active Expired
- 1974-02-25 PL PL1974169066A patent/PL90941B1/pl unknown
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 |
PL90941B1 (de) | 1977-02-28 |
JPS49117302A (de) | 1974-11-09 |
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