FR1600845A - - Google Patents
Info
- Publication number
- FR1600845A FR1600845A FR1600845DA FR1600845A FR 1600845 A FR1600845 A FR 1600845A FR 1600845D A FR1600845D A FR 1600845DA FR 1600845 A FR1600845 A FR 1600845A
- Authority
- FR
- France
- 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
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
- E21D23/0004—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
- E21D23/0039—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 a strut or by a row of struts parallel to the working face
-
- 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
- E21D23/0427—Shield operating devices; Hinges therefor
-
- 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
- E21D23/066—Pivoted cantilever extensions therefor
-
- 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
- E21D23/08—Advancing mechanisms
- E21D23/081—Advancing mechanisms forming parts of the roof supports
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)
- Vibration Prevention Devices (AREA)
- Jib Cranes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR69050193 | 1968-07-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1600845A true FR1600845A (en) | 1970-08-03 |
Family
ID=9695482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1600845D Expired FR1600845A (en) | 1968-07-08 | 1968-07-08 |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1934376B2 (en) |
FR (1) | FR1600845A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2159535C3 (en) * | 1971-12-01 | 1979-01-04 | Thyssen Industrie Ag, 4300 Essen | Shield support frame |
DE2164365C3 (en) * | 1971-12-23 | 1984-03-15 | Klöckner-Becorit GmbH, 4620 Castrop-Rauxel | Retractable shield extension unit |
GB1428256A (en) * | 1972-05-18 | 1976-03-17 | Bochumer Eisen Heintzmann | Roof support with a shield for a longwall working in a mine |
FR2253143B1 (en) * | 1973-11-30 | 1978-11-03 | Alsace Mines Potasse |
-
1968
- 1968-07-08 FR FR1600845D patent/FR1600845A/fr not_active Expired
-
1969
- 1969-07-07 DE DE19691934376 patent/DE1934376B2/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE1934376A1 (en) | 1970-03-05 |
DE1934376B2 (en) | 1974-08-01 |