GB870486A - Improvements in pushing devices for shifting mining machinery - Google Patents
Improvements in pushing devices for shifting mining machineryInfo
- Publication number
- GB870486A GB870486A GB3405157A GB3405157A GB870486A GB 870486 A GB870486 A GB 870486A GB 3405157 A GB3405157 A GB 3405157A GB 3405157 A GB3405157 A GB 3405157A GB 870486 A GB870486 A GB 870486A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strut
- ram
- mining machinery
- oct
- shifting
- 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 3
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 239000011435 rock Substances 0.000 abstract 1
Classifications
-
- 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
- E21F13/08—Shifting conveyors or other transport devices from one location at the working face to another
- E21F13/086—Armoured conveyors shifting 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)
- Framework For Endless Conveyors (AREA)
Abstract
870,486. Pushing jacks. DOWTY MINING EQUIPMENT Ltd. Oct. 27, 1958 [Oct. 31, 1957], No. 34051/57. Class 78 (3). In a device for moving mining machinery, such as conveyers, a reaction strut 1-6, pivoted at 8 to a base frame 11, is forced into engagement with a mine roof on initial extension of an hydraulic ram 22 which is attached at one end to the conveyer through a lug 23 and is connected at its other end to strut leg 6 by a link 25. Shroud 28 protects the ram from damage by falling debris. The base frame 11 comprises a pair of spaced plough-shaped side members connected by bars 12, 19 and 20, and is so constructed that it moves freely over the mine floor without collecting debris beneath the strut. In a modification (Fig. 5, not shown), the lower ends of base side plates are shaped to rock on the mine floor as the ram is extended and contracted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3405157A GB870486A (en) | 1957-10-31 | 1957-10-31 | Improvements in pushing devices for shifting mining machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3405157A GB870486A (en) | 1957-10-31 | 1957-10-31 | Improvements in pushing devices for shifting mining machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB870486A true GB870486A (en) | 1961-06-14 |
Family
ID=10360756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3405157A Expired GB870486A (en) | 1957-10-31 | 1957-10-31 | Improvements in pushing devices for shifting mining machinery |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB870486A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3240022A (en) * | 1961-10-02 | 1966-03-15 | Dowty Mining Equipment Ltd | Roof supports |
| US3324664A (en) * | 1964-04-03 | 1967-06-13 | Gullick Ltd | Resilient biasing device for mine roof support props |
| US3830456A (en) * | 1972-12-22 | 1974-08-20 | Fletcher J & Co | Mining apparatus |
-
1957
- 1957-10-31 GB GB3405157A patent/GB870486A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3240022A (en) * | 1961-10-02 | 1966-03-15 | Dowty Mining Equipment Ltd | Roof supports |
| US3324664A (en) * | 1964-04-03 | 1967-06-13 | Gullick Ltd | Resilient biasing device for mine roof support props |
| US3830456A (en) * | 1972-12-22 | 1974-08-20 | Fletcher J & Co | Mining apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB870486A (en) | Improvements in pushing devices for shifting mining machinery | |
| ES307315A1 (en) | Roof supporting systems for mine workings | |
| GB950066A (en) | Improvements in or relating to advancing roof supporting means for mines | |
| GB1516637A (en) | Mine roof supports | |
| GB858011A (en) | Improvements in pushing devices for shifting mining machinery | |
| FR1417111A (en) | Method and device for supporting mine galleries combining a load bearing, sliding and articulated support, with a support by anchoring | |
| US3084920A (en) | Pushing devices for mine conveyors | |
| GB1383920A (en) | Apparatus for conveying broken rock material | |
| GB881364A (en) | Improvements in or relating to hydraulic ram devices, particularly applicable to mine roof supports | |
| GB1213019A (en) | Improvements in or relating to underground roof support systems | |
| GB1111715A (en) | Mine roof supports | |
| GB1259029A (en) | ||
| GB1027584A (en) | Conveyor anchoring and advancing apparatus | |
| GB865922A (en) | Mine roof supports | |
| GB998336A (en) | Improvements in or relating to mine roof and like supports | |
| GB932455A (en) | Plough type coal-wiring equipment | |
| GB982024A (en) | Improvements relating to advancing mine roof supports | |
| GB1072893A (en) | Apparatus for shoring up mining galleries | |
| GB597484A (en) | Belt conveyors | |
| GB874435A (en) | Advancing mine roof support structure for mine working faces | |
| GB742244A (en) | Improvements in or relating to conveyors | |
| GB1124096A (en) | Hydraulically operated telescopic props | |
| GB1013470A (en) | Roof supports suitable for use in mines | |
| GB1059557A (en) | Mine roof support assembly | |
| GB947078A (en) | Self-advancing roof support |