GB985401A - Improvements in advanceable mine roof support assemblies - Google Patents
Improvements in advanceable mine roof support assembliesInfo
- Publication number
- GB985401A GB985401A GB17443/62A GB1744362A GB985401A GB 985401 A GB985401 A GB 985401A GB 17443/62 A GB17443/62 A GB 17443/62A GB 1744362 A GB1744362 A GB 1744362A GB 985401 A GB985401 A GB 985401A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mine roof
- props
- roof
- roof support
- interconnected
- Prior art date
- 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
- 230000000712 assembly Effects 0.000 title 1
- 238000000429 assembly Methods 0.000 title 1
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
- E21D23/0017—Pile type supports
- E21D23/003—Pile type supports consisting of a rigid pile
-
- 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
- E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
- E21D23/0069—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices without essential advancing shifting devices
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)
- Bridges Or Land Bridges (AREA)
- Tents Or Canopies (AREA)
Abstract
985,401. Advancing mine roof supports. RHEINSTAHL WANHEIM G.m.b.H. May 7, 1962 [May 13, 1961], No. 17443/62. Heading E1E. In a mine roof support assembly comprising at least two hydraulic props 1 interconnected at a fixed spacing by roof and floor connections, the front and rear prop or props are adapted to be retracted in turn and suspended from the roof bar 3 to permit troughs in the floor to be levelled off prior to advancement of all of the said props by a shifting cylinder 2. The roofbar is made up of sections which are interconnected by a slotted joint connection 4, 5, 6 permitting limited angular and vertical adjustment. Each prop, see Fig. 2 (not shown), is provided with a retracting cylinder maintained under constant load.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER0030332 | 1961-05-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB985401A true GB985401A (en) | 1965-03-10 |
Family
ID=7403268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17443/62A Expired GB985401A (en) | 1961-05-13 | 1962-05-07 | Improvements in advanceable mine roof support assemblies |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3218812A (en) |
| GB (1) | GB985401A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2182704A (en) * | 1985-11-08 | 1987-05-20 | Dobson Park Ind | Pivotable forward extension on mine roof support canopy |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE649949A (en) * | 1963-07-02 | |||
| DE1289506C2 (en) * | 1963-08-29 | 1974-03-28 | HYDRAULIC SUPPORT ELEMENT | |
| US3333809A (en) * | 1965-07-27 | 1967-08-01 | Wild A G & Co Ltd | Hydraulic chocks |
| GB1206283A (en) * | 1967-07-28 | 1970-09-23 | Herbert Cotterill Ltd | Improvements in or relating to mine roof supports |
| JPS4812602B1 (en) * | 1967-09-22 | 1973-04-21 | ||
| LU56825A1 (en) * | 1968-09-05 | 1970-03-05 | ||
| DE8318615U1 (en) * | 1983-06-28 | 1983-11-03 | Klöckner-Becorit GmbH, 4620 Castrop-Rauxel | ALIGNMENT CYLINDER FOR SHIELD REMOVAL |
| DE3400771A1 (en) * | 1984-01-12 | 1985-07-18 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | EXTENSION FRAME, IN PARTICULAR SHIELD EXTENSION FRAME, WITH A LIFTING DEVICE FOR LIFTING THE RECESSED RUNNERS |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2795935A (en) * | 1952-09-30 | 1957-06-18 | Joy Mfg Co | Walking roof support |
| US3115754A (en) * | 1959-01-23 | 1963-12-31 | Dowty Mining Equipment Ltd | Mining shield |
-
1962
- 1962-05-07 GB GB17443/62A patent/GB985401A/en not_active Expired
- 1962-05-14 US US194386A patent/US3218812A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2182704A (en) * | 1985-11-08 | 1987-05-20 | Dobson Park Ind | Pivotable forward extension on mine roof support canopy |
Also Published As
| Publication number | Publication date |
|---|---|
| US3218812A (en) | 1965-11-23 |
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