ES487915A1 - Chock. - Google Patents
Chock.Info
- Publication number
- ES487915A1 ES487915A1 ES487915A ES487915A ES487915A1 ES 487915 A1 ES487915 A1 ES 487915A1 ES 487915 A ES487915 A ES 487915A ES 487915 A ES487915 A ES 487915A ES 487915 A1 ES487915 A1 ES 487915A1
- Authority
- ES
- Spain
- Prior art keywords
- shield
- struts
- supported
- supporting structure
- rear cap
- 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
- 239000003245 coal Substances 0.000 abstract 2
- 238000009412 basement excavation Methods 0.000 abstract 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
- E21D23/0034—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
-
- 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
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)
- Excavating Of Shafts Or Tunnels (AREA)
- Lining And Supports For Tunnels (AREA)
- Tents Or Canopies (AREA)
Abstract
1. Mine roof supporting structure, in which the rear cap (1) is supported by means of props (2) on a floor frame (3) and in which a shield (5) is pivotally linked to the rear cap and is maintained in its pivotal position by means of struts, for use in thick seams, in which the roof coal above the mine roof supporting structure is excavated and fed via the shield to a movable conveyor (11) arranged at the site of the old excavation, characterized in that the shield (5) is supported in its pivotal position against the flor-frame (3) by means of struts (6) pivotally linked to the shield (5) as well as to the floor frame (3), and in that at least one slide member (9) is guided within the shield (5) for being protruded in the direction of the shield, said slide allowing to vary the effective length of the shield (5) for guiding the roof coal.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT48079A AT361430B (en) | 1979-01-23 | 1979-01-23 | EXTENSION BLOCK |
Publications (1)
Publication Number | Publication Date |
---|---|
ES487915A1 true ES487915A1 (en) | 1980-10-01 |
Family
ID=3491720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES487915A Expired ES487915A1 (en) | 1979-01-23 | 1980-01-22 | Chock. |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0014188B1 (en) |
JP (1) | JPS55126700A (en) |
AT (1) | AT361430B (en) |
AU (1) | AU5480780A (en) |
DE (1) | DE3060979D1 (en) |
ES (1) | ES487915A1 (en) |
HU (1) | HU184230B (en) |
IN (1) | IN153639B (en) |
PL (1) | PL221456A1 (en) |
YU (1) | YU9880A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4016929C1 (en) * | 1990-05-25 | 1991-09-26 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co., 5600 Wuppertal, De | Roof support for mine - has canopy with bar hinged to floor skids by extendable props |
CN1052526C (en) * | 1996-10-03 | 2000-05-17 | 中国矿业大学北京研究生部 | Light low-level hydraulic prop for caving coal-mining method |
CN102704975B (en) * | 2012-06-29 | 2015-08-19 | 中国矿业大学 | A kind of top-coal caving face coal separation hydraulic support |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2170295A5 (en) * | 1971-11-18 | 1973-09-14 | Alacchi Georges | |
GB1477136A (en) * | 1973-10-18 | 1977-06-22 | Dowty Mining Equipment Ltd | Mine roof support |
US4065929A (en) * | 1976-03-08 | 1978-01-03 | Atlantic Richfield Company | Mine roof support and method in longwall mining of thick mineral seams |
GB1557814A (en) * | 1976-03-13 | 1979-12-12 | Dowty Mining Equipment Ltd | Mine roof support |
DE7616114U1 (en) * | 1976-05-20 | 1976-10-14 | Bochumer Eisenhuette Heintzmann Gmbh & Co, 4630 Bochum | SHIELD STRUCTURE |
FR2369414A1 (en) * | 1976-10-29 | 1978-05-26 | Bennes Marrel | Advancing mine roof support - has box-section rear link with variable size opening to allow passage of material from rear of face |
DE2705460A1 (en) * | 1977-02-10 | 1978-08-17 | Hemscheidt Maschf Hermann | Mine gallery roof drilling protective support - has overhead sloping plate with opening for drill between front and rear supports |
DE2808487C2 (en) * | 1978-02-28 | 1986-10-02 | Gewerkschaft Eisenhütte Westfalia GmbH, 4670 Lünen | Extraction facility for the extraction of seam-like deposits, especially of great thickness |
-
1979
- 1979-01-23 AT AT48079A patent/AT361430B/en not_active IP Right Cessation
- 1979-12-29 IN IN1359/CAL/79A patent/IN153639B/en unknown
-
1980
- 1980-01-14 EP EP19800890002 patent/EP0014188B1/en not_active Expired
- 1980-01-14 DE DE8080890002T patent/DE3060979D1/en not_active Expired
- 1980-01-16 YU YU9880A patent/YU9880A/en unknown
- 1980-01-19 PL PL22145680A patent/PL221456A1/xx unknown
- 1980-01-22 ES ES487915A patent/ES487915A1/en not_active Expired
- 1980-01-22 HU HU12880A patent/HU184230B/en unknown
- 1980-01-22 AU AU54807/80A patent/AU5480780A/en not_active Abandoned
- 1980-01-22 JP JP626180A patent/JPS55126700A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
IN153639B (en) | 1984-08-04 |
AT361430B (en) | 1981-03-10 |
EP0014188A1 (en) | 1980-08-06 |
YU9880A (en) | 1983-04-30 |
ATA48079A (en) | 1980-08-15 |
HU184230B (en) | 1984-07-30 |
DE3060979D1 (en) | 1982-12-02 |
PL221456A1 (en) | 1980-09-22 |
EP0014188B1 (en) | 1982-10-27 |
JPS55126700A (en) | 1980-09-30 |
AU5480780A (en) | 1980-07-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1572241A (en) | Support assemblies for mine workings | |
GB1418075A (en) | Self advancing support device for coal and ore extraction works | |
FR2528108B1 (en) | ||
ES8302184A1 (en) | Mining equipment, mainly for extraction of heavy beds | |
GB1491743A (en) | Shield-type roof support unit for mines | |
ES487915A1 (en) | Chock. | |
GB1470436A (en) | Mineral mining installations | |
US4041714A (en) | Mine roof supports | |
GB1532875A (en) | Underground roadway support equipment | |
US3949563A (en) | Mine roof shield | |
GB1487702A (en) | Shield roof supports | |
US3216202A (en) | Roof supporting means for mines | |
GB1492586A (en) | Roof support systems for underground mine workings | |
ES8105816A1 (en) | Coal planer control device | |
GB1133099A (en) | Improvements relating to roof supports for mine workings | |
GB773407A (en) | Improvements in or relating to chocks, props and like roof supporting structures formines | |
ES8505761A1 (en) | Circular heading machine. | |
GB1493584A (en) | Mine equipment | |
GB1443081A (en) | Mine roof supports | |
ES476528A1 (en) | Roof support unit | |
GB862393A (en) | Roof support with goaf screen in mines | |
GB1269866A (en) | Roof support for use in mines | |
GB1219908A (en) | Improvements in or relating to advancing mine roof supports | |
ES456824A1 (en) | Messer sheet pile system shield supproting holding | |
GB1536400A (en) | Roof supports |