GB1425186A - Hydraulic control systems for mineral mining installations - Google Patents
Hydraulic control systems for mineral mining installationsInfo
- Publication number
- GB1425186A GB1425186A GB2128473A GB2128473A GB1425186A GB 1425186 A GB1425186 A GB 1425186A GB 2128473 A GB2128473 A GB 2128473A GB 2128473 A GB2128473 A GB 2128473A GB 1425186 A GB1425186 A GB 1425186A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conveyer
- unit
- props
- tension
- pressure
- 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
- 238000005065 mining Methods 0.000 title abstract 2
- 229910052500 inorganic mineral Inorganic materials 0.000 title 1
- 238000009434 installation Methods 0.000 title 1
- 239000011707 mineral Substances 0.000 title 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
- E21D23/006—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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/10—Anchorings for conveyors
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)
- Mechanical Engineering (AREA)
- Framework For Endless Conveyors (AREA)
- Clamps And Clips (AREA)
Abstract
1425186 Mining conveyers GEWERKSCHAFT EISENHUTTE WESTFALIA 4 May 1973 [5 May 1972 15 July 1972] 21284/73 Heading B8A Hydraulically operated tension means 21-25 is attached by a bracket 26 to a channel section 10 of a longwall conveyer but the tension means operates only when roof props 12 to which the means is connected, reach a predetermined setting pressure. The tension means includes a piston-cylinder unit 22 and is connected to an anchor beam 17 movable transversely of the length of the conveyer by a ram 18 which is controlled by a sensing element 20 whose head 75 engages the conveyer. The props 12 are associated with a further pair of props 14, each pair being mounted on a support frame I, II. Assuming that frame I has been advanced, the props 12 are extended and, when the setting pressure has built up, a valve (63, Fig. 2, not shown) in an hydraulic interlock circuit opens and the piston-cylinder unit 22 is energized thus exerting tension in the direction P and consequentially tensioning the remainder of the conveyer. If the pressure in the props 12 drops, or is lowered to permit advancement of the frame I, pressure to the unit 22 is automatically reduced and no tensioning force acts on the conveyer. A further valve (64) ensures that the unit 22 remains pressurized while support frame II is advancing. A double-acting hydraulic ram of a guiding and shifting means 11 enables the frames I, II to be advanced alternately. When the conveyer advances, the sensor 20 causes the ram 18 to be energized and by extending the anchor beam 17, the tension unit 22 is maintained parallel to the conveyer. In a modified arrangement, (Figs. 4, 5, not shown) a control unit (100) is mounted on the piston-rod of the tension unit (22) and includes three interlocking servo control valves (112, 114, 113) which, unless operated in sequence by sufficient pressure in the props 12, prevent actuation of the unit (22). In the event of pressure drop in the fluid supply, the tensioning means remains in operation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722222018 DE2222018C3 (en) | 1972-05-05 | 1972-05-05 | Control for a face conveyor partial anchoring |
DE19722234964 DE2234964C3 (en) | 1972-07-15 | 1972-07-15 | Control for a face conveyor partial anchoring |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1425186A true GB1425186A (en) | 1976-02-18 |
Family
ID=25763210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2128473A Expired GB1425186A (en) | 1972-05-05 | 1973-05-04 | Hydraulic control systems for mineral mining installations |
Country Status (3)
Country | Link |
---|---|
CS (1) | CS212289B2 (en) |
FR (1) | FR2183662B1 (en) |
GB (1) | GB1425186A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105781602A (en) * | 2016-03-18 | 2016-07-20 | 西安科技大学 | Simulating hydraulic support applicable to coal face |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2924395C2 (en) * | 1979-06-16 | 1986-10-09 | Gewerkschaft Eisenhütte Westfalia GmbH, 4670 Lünen | Fastening bridge for attachment to the trough sections of a chain conveyor for underground mining operations |
CN110331996B (en) * | 2019-07-09 | 2020-07-14 | 山东科技大学 | Purely-mechanical semi-automatic movable temporary roadway support device and working method |
-
1973
- 1973-01-19 FR FR7301926A patent/FR2183662B1/fr not_active Expired
- 1973-05-03 CS CS316073A patent/CS212289B2/en unknown
- 1973-05-04 GB GB2128473A patent/GB1425186A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105781602A (en) * | 2016-03-18 | 2016-07-20 | 西安科技大学 | Simulating hydraulic support applicable to coal face |
Also Published As
Publication number | Publication date |
---|---|
FR2183662A1 (en) | 1973-12-21 |
CS212289B2 (en) | 1982-03-26 |
FR2183662B1 (en) | 1977-04-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |