GB1507311A - Mine roof supports - Google Patents
Mine roof supportsInfo
- Publication number
- GB1507311A GB1507311A GB3973374A GB3973374A GB1507311A GB 1507311 A GB1507311 A GB 1507311A GB 3973374 A GB3973374 A GB 3973374A GB 3973374 A GB3973374 A GB 3973374A GB 1507311 A GB1507311 A GB 1507311A
- Authority
- GB
- United Kingdom
- Prior art keywords
- props
- canopy
- equipment
- skids
- bar
- 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
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
- E21D23/0021—Pile type supports comprising two walking elements
-
- 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
- E21D23/0418—Positioning devices and stabilizing means for the props
-
- 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
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)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
1507311 Self aligning props in mine roof supports GULLICK DOBSON Ltd 13 June 1975 [12 Sept 1974] 39733/74 Heading E1P A mine roof support comprises two spaced parallel skids 4 and a canopy 1 supported by extensible props 5, the canopy carrying the equipment for controlling an articulated front roof bar 2 and also the equipment 6 for controlling alignment of the props 5. A bifurcated rear roof bar may be hingedly or retractably mounted on the canopy, and it may be in two parts foldable one upon the other to allow it to be folded down parallel to the props 5 in low seams. The rear roof bar may be supported by a pair of inclined props in line with the skids 4 which can be connected together by a plate or bar to enable them to be advanced together. The equipment for aligning the props 5, Fig. 4, comprises a rubber collar 13 which tends to align the prop on its part-spherical seating 10 when any load is removed, the props being pivotally connected at 20, 21 to the canopy and skids respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3973374A GB1507311A (en) | 1974-09-12 | 1974-09-12 | Mine roof supports |
| DE19752503765 DE2503765C3 (en) | 1974-09-12 | 1975-01-30 | Extension frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3973374A GB1507311A (en) | 1974-09-12 | 1974-09-12 | Mine roof supports |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1507311A true GB1507311A (en) | 1978-04-12 |
Family
ID=10411174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3973374A Expired GB1507311A (en) | 1974-09-12 | 1974-09-12 | Mine roof supports |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1507311A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2436765A1 (en) * | 1978-09-25 | 1980-04-18 | Woellner Werke | METHOD OF INSULATING BY SPRAYING OBJECTS, AND DEVICE FOR CARRYING OUT SAID METHOD |
| GB2197678A (en) * | 1986-11-21 | 1988-05-25 | Gullick Dobson Ltd | Combined forepole and sprag on mine roof support canopy |
| CN114087003A (en) * | 2021-11-17 | 2022-02-25 | 中国矿业大学 | Temporary support combined moving device and method for self-adaptive tunneling roadway empty-roof distance |
-
1974
- 1974-09-12 GB GB3973374A patent/GB1507311A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2436765A1 (en) * | 1978-09-25 | 1980-04-18 | Woellner Werke | METHOD OF INSULATING BY SPRAYING OBJECTS, AND DEVICE FOR CARRYING OUT SAID METHOD |
| GB2197678A (en) * | 1986-11-21 | 1988-05-25 | Gullick Dobson Ltd | Combined forepole and sprag on mine roof support canopy |
| GB2197678B (en) * | 1986-11-21 | 1990-04-11 | Gullick Dobson Ltd | Mine roof supports |
| CN114087003A (en) * | 2021-11-17 | 2022-02-25 | 中国矿业大学 | Temporary support combined moving device and method for self-adaptive tunneling roadway empty-roof distance |
| CN114087003B (en) * | 2021-11-17 | 2024-04-26 | 中国矿业大学 | Temporary support combined moving device and method for self-adaptive tunneling roadway overhead distance |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2503765A1 (en) | 1976-04-01 |
| DE2503765B2 (en) | 1977-02-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |