FR2265971B3 - - Google Patents
Info
- Publication number
- FR2265971B3 FR2265971B3 FR7411882A FR7411882A FR2265971B3 FR 2265971 B3 FR2265971 B3 FR 2265971B3 FR 7411882 A FR7411882 A FR 7411882A FR 7411882 A FR7411882 A FR 7411882A FR 2265971 B3 FR2265971 B3 FR 2265971B3
- 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
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)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Forklifts And Lifting Vehicles (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7411882A FR2265971A1 (en) | 1974-03-28 | 1974-03-28 | Hydraulic prop for mine working - has arm between flexible base and head plate vertically adjusted by hydraulic cylinders |
DE19752513612 DE2513612A1 (de) | 1974-03-28 | 1975-03-27 | Hydraulikstempel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7411882A FR2265971A1 (en) | 1974-03-28 | 1974-03-28 | Hydraulic prop for mine working - has arm between flexible base and head plate vertically adjusted by hydraulic cylinders |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2265971A1 FR2265971A1 (en) | 1975-10-24 |
FR2265971B3 true FR2265971B3 (de) | 1976-04-09 |
Family
ID=9137269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7411882A Granted FR2265971A1 (en) | 1974-03-28 | 1974-03-28 | Hydraulic prop for mine working - has arm between flexible base and head plate vertically adjusted by hydraulic cylinders |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2513612A1 (de) |
FR (1) | FR2265971A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2753059C2 (de) * | 1976-12-07 | 1986-06-19 | Charbonnages De France, Paris | Fahrbare Grubenausbaueinheit |
CN109026094A (zh) * | 2018-07-20 | 2018-12-18 | 河北充填采矿技术有限公司 | 一种巷道顶板倾角自适应的辅助支护装置及支护方法 |
-
1974
- 1974-03-28 FR FR7411882A patent/FR2265971A1/fr active Granted
-
1975
- 1975-03-27 DE DE19752513612 patent/DE2513612A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE2513612A1 (de) | 1975-10-02 |
FR2265971A1 (en) | 1975-10-24 |