GB983551A - An advancing mine roof support - Google Patents
An advancing mine roof supportInfo
- Publication number
- GB983551A GB983551A GB9537/61A GB953761A GB983551A GB 983551 A GB983551 A GB 983551A GB 9537/61 A GB9537/61 A GB 9537/61A GB 953761 A GB953761 A GB 953761A GB 983551 A GB983551 A GB 983551A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jack
- acting
- locked
- modification
- pivoted
- 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
- 230000004048 modification Effects 0.000 abstract 4
- 238000012986 modification Methods 0.000 abstract 4
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
- E21D23/006—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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/006—Caps for supporting mine roofs characterised by the material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/0206—Hydraulically operated extension devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/02—Cantilever extension or similar protecting devices
- E21D17/08—Cap joints for obtaining a coal-face free of pit-props
- E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type
-
- 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
- E21D23/0073—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 with advancing shifting devices connected therewith
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)
- Actuator (AREA)
- Paper (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
983,551. Mine roof supports. K. M. GROETSCHEL. March 15, 1961 [April 1, 1960; June 11, 1960; July 28, 1960], No. 9537/61. Heading E1E. Cantilever extensions (not shown) are locked to articulated roof bars 1, 4, Fig. 2, by elements 2, 2<SP>1</SP> displaced by a jack 6, 7, 7<SP>1</SP> arranged as shown, by jacks 6<SP>1</SP>, 6<SP>11</SP> acting on projections 8<SP>1</SP> or 8 or by a jack 6 acting through the linkage shown in chain lines or Fig. 4 (not shown). In a modification the projections 8 are coupled to a single jack or a jack provided with two plungers, see Figs. 3 and 5 (not shown), respectively. In another modification, Fig. 6, the cantilever extensions 3 are spaced apart by a centre piece 17 and are locked to the roof bars 1, 4 by a jack 6, 7, 7<SP>1</SP> acting through a linkage 2, 12. In a further modification, Fig. 9, the bar 42 incorporates a telescopic extension 44 which is advanced by a plunger 43 and locked to a pivoted advance bar 49 by a wedge 51 pivoted to a jack 52 or 52<SP>1</SP>, the wedge acting through the medium of a rider element 55 or roller, see Fig. 11 (not shown). Further minor modifications of the above embodiments are given for which Figs. 7, 8, 12 and 13, (not shown), should be referred to.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEG29358A DE1149679B (en) | 1960-04-01 | 1960-04-01 | Device for automatic locking and unlocking of self-supporting caps to be plucked |
DEG29853A DE1152982B (en) | 1960-04-01 | 1960-06-11 | Device for the mechanical locking and unlocking of one or more of a support element from a support element by means of locking elements cantilevered caps |
DEG30180A DE1158467B (en) | 1960-07-28 | 1960-07-28 | Device for the hydraulic actuation of the locking of a retractable support element for longwall construction self-supporting pre-fixed caps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB983551A true GB983551A (en) | 1965-02-17 |
Family
ID=27210584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9537/61A Expired GB983551A (en) | 1960-04-01 | 1961-03-15 | An advancing mine roof support |
Country Status (5)
Country | Link |
---|---|
US (1) | US3217498A (en) |
AT (1) | AT239727B (en) |
BE (1) | BE602123A (en) |
DE (2) | DE1149679B (en) |
GB (1) | GB983551A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2208676A (en) * | 1987-08-13 | 1989-04-12 | Dowty Mining Equipment Ltd | Roof supports with tiltable cantilever extension |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1069100B (en) * | 1959-11-19 | |||
US1469360A (en) * | 1920-07-23 | 1923-10-02 | Niles Bement Pond Co | Clamp and grip chuck |
US2749712A (en) * | 1949-11-25 | 1956-06-12 | Gerlach Karl | Mine supporting structure for working mines |
DE1022992B (en) * | 1951-05-15 | 1958-01-23 | Gutehoffnungshuette Sterkrade | Pit support cap with articulated connection |
DE199149C (en) * | 1954-01-29 | |||
US2884272A (en) * | 1955-01-19 | 1959-04-28 | Hans Gerlach | Roof support structure for mine workings |
GB950451A (en) * | 1959-02-28 | 1964-02-26 | Wilfrid George Reid | Improvements in the jointing of plaster board and like structural materials |
-
1960
- 1960-04-01 DE DEG29358A patent/DE1149679B/en active Pending
- 1960-06-11 DE DEG29853A patent/DE1152982B/en active Pending
-
1961
- 1961-03-07 AT AT186561A patent/AT239727B/en active
- 1961-03-15 GB GB9537/61A patent/GB983551A/en not_active Expired
- 1961-03-21 US US97264A patent/US3217498A/en not_active Expired - Lifetime
- 1961-03-31 BE BE602123A patent/BE602123A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2208676A (en) * | 1987-08-13 | 1989-04-12 | Dowty Mining Equipment Ltd | Roof supports with tiltable cantilever extension |
GB2208676B (en) * | 1987-08-13 | 1991-12-04 | Dowty Mining Equipment Ltd | Roof supports |
Also Published As
Publication number | Publication date |
---|---|
DE1152982B (en) | 1963-08-22 |
DE1149679B (en) | 1963-06-06 |
US3217498A (en) | 1965-11-16 |
AT239727B (en) | 1965-04-26 |
BE602123A (en) | 1961-10-02 |
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