GB1184788A - Mine Roof Support Systems - Google Patents
Mine Roof Support SystemsInfo
- Publication number
- GB1184788A GB1184788A GB4717066A GB4717066A GB1184788A GB 1184788 A GB1184788 A GB 1184788A GB 4717066 A GB4717066 A GB 4717066A GB 4717066 A GB4717066 A GB 4717066A GB 1184788 A GB1184788 A GB 1184788A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frame
- valves
- mine roof
- pilot
- roof support
- 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 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 239000003245 coal Substances 0.000 abstract 1
- 239000012530 fluid Substances 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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/18—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms
- E21D23/20—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices of advancing mechanisms for sequential movement, e.g. one behind the other
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)
- Fluid-Pressure Circuits (AREA)
Abstract
1,184,788. Advancing mine roof support assemblies. COAL INDUSTRY (PATENTS) Ltd. 20 Oct., 1967 [21 Oct., 1966], No. 47170/66. Heading E1P, In an advancing mine roof support assembly consisting of support frames arranged along a longwall face in groups of say eight and which is divided in such a way that every third frame constitutes a "pusher" unit and every ninth frame a "master" unit, the conveyor advance may be stopped by operation of any stop valve 44 associated with any frame or restarted by operation by any of the start valves 40 thereof. Each frame includes three props 16, 17 and 18 and a double-acting jack 19 having a trigger valve 35. The control circuit of each frame has a power supply conduit 3, right- and left-hand, out-going, pilot lines 6, 7, an exhaust line 5 and advancing lines 8, 9. As shown, the circuit includes prop setting and release valves 33, 29, "push" and "pull" valves 20, 24 for the jack and "trigger", start and stop valves 35, 40 and 44 respectively. As the props reach setting pressure the start valve 40 is energised to feed fluid to a pilot line which is in communication with an adjacent frame. For pilot and manual operation, arrangement and function of "ramming" valves and "master" units together with other operational desiderata the Specification and Figs. 1 and 2 (not shown) should be referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4717066A GB1184788A (en) | 1966-10-21 | 1966-10-21 | Mine Roof Support Systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4717066A GB1184788A (en) | 1966-10-21 | 1966-10-21 | Mine Roof Support Systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1184788A true GB1184788A (en) | 1970-03-18 |
Family
ID=10443998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4717066A Expired GB1184788A (en) | 1966-10-21 | 1966-10-21 | Mine Roof Support Systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1184788A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4109472A (en) * | 1976-01-24 | 1978-08-29 | Dowty Mining Equipment Limited | Longwall mining apparatus |
-
1966
- 1966-10-21 GB GB4717066A patent/GB1184788A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4109472A (en) * | 1976-01-24 | 1978-08-29 | Dowty Mining Equipment Limited | Longwall mining apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |