FR2263370B3 - - Google Patents
Info
- Publication number
- FR2263370B3 FR2263370B3 FR7407886A FR7407886A FR2263370B3 FR 2263370 B3 FR2263370 B3 FR 2263370B3 FR 7407886 A FR7407886 A FR 7407886A FR 7407886 A FR7407886 A FR 7407886A FR 2263370 B3 FR2263370 B3 FR 2263370B3
- 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
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- 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
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)
- Jib Cranes (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7407886A FR2263370A1 (en) | 1974-03-04 | 1974-03-04 | Mine gallery roof support - has top member connected to swinging boom by cylinder operated intermediate arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7407886A FR2263370A1 (en) | 1974-03-04 | 1974-03-04 | Mine gallery roof support - has top member connected to swinging boom by cylinder operated intermediate arm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2263370A1 FR2263370A1 (en) | 1975-10-03 |
| FR2263370B3 true FR2263370B3 (ro) | 1976-04-09 |
Family
ID=9136004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7407886A Granted FR2263370A1 (en) | 1974-03-04 | 1974-03-04 | Mine gallery roof support - has top member connected to swinging boom by cylinder operated intermediate arm |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2263370A1 (ro) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1581336A (en) * | 1976-07-07 | 1980-12-10 | Dowty Mining Equipment Ltd | Mine roof support |
| GB2048355A (en) * | 1979-05-08 | 1980-12-10 | Gewerk Eisenhuette Westfalia | Mine roof supports |
| CN114104969A (zh) * | 2021-11-12 | 2022-03-01 | 郑州合新智能装备有限公司 | 一种巷道架棚机 |
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1974
- 1974-03-04 FR FR7407886A patent/FR2263370A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2263370A1 (en) | 1975-10-03 |