GB1235353A - Improvements in or relating to longwall mineral mining installations - Google Patents
Improvements in or relating to longwall mineral mining installationsInfo
- Publication number
- GB1235353A GB1235353A GB303368A GB303368A GB1235353A GB 1235353 A GB1235353 A GB 1235353A GB 303368 A GB303368 A GB 303368A GB 303368 A GB303368 A GB 303368A GB 1235353 A GB1235353 A GB 1235353A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conveyor
- plough
- motor
- cause
- mining
- 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
- 238000009434 installation Methods 0.000 title abstract 4
- 238000005065 mining Methods 0.000 title abstract 4
- 229910052500 inorganic mineral Inorganic materials 0.000 title abstract 3
- 239000011707 mineral Substances 0.000 title abstract 3
- 239000003245 coal Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/04—Safety devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
1,235,353. Mining installations. COAL INDUSTRY (PATENTS) Ltd. 14 Jan., 1969 [19 Jan., 1968], No. 3033/68. Heading E1F. A longwall mineral mining installation includes a mining machine mounted for reciprocal movement along a mineral face, and a buffer assembly having a first part attached to an abutment of the installation and a second part adapted to be contacted by the machine, when the latter is moving, to decelerate it at a predetermined rate. The machine is formed by a plough 2 loading a conveyor 3 driven by a motor 6, the plough being driven by motor 7 through an endless chain 8. The motors 6 and 7 may be duplicated at the other end of the conveyor 3. Self-advancing roof supports 10 and conveyor-advancing rams 11 are provided. The buffer assembly 13 is formed by a piston 14 and a cylinder 15 and a similar assembly may be disposed at the other end of the conveyor 3. The fluid from each cylinder 15 passes through a hydraulic yield valve or a variable orifice to a hydraulic accumulator 16, and a pressure responsive switch provided in the circuit is operable upon a predetermined pressure being reached to cause the plough motor 7 to be stopped. The switch may also cause sequence valves to operate the conveyor advancing rams 11, and cause the motor 7 to be reversed for return movement of the plough. The pressure responsive switch may be replaced by a switch actuated by movement of the piston 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB303368A GB1235353A (en) | 1968-01-19 | 1968-01-19 | Improvements in or relating to longwall mineral mining installations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB303368A GB1235353A (en) | 1968-01-19 | 1968-01-19 | Improvements in or relating to longwall mineral mining installations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1235353A true GB1235353A (en) | 1971-06-16 |
Family
ID=9750696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB303368A Expired GB1235353A (en) | 1968-01-19 | 1968-01-19 | Improvements in or relating to longwall mineral mining installations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1235353A (en) |
-
1968
- 1968-01-19 GB GB303368A patent/GB1235353A/en not_active Expired
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