AU514972B2 - Tracked mine roof support - Google Patents
Tracked mine roof supportInfo
- Publication number
- AU514972B2 AU514972B2 AU31270/77A AU3127077A AU514972B2 AU 514972 B2 AU514972 B2 AU 514972B2 AU 31270/77 A AU31270/77 A AU 31270/77A AU 3127077 A AU3127077 A AU 3127077A AU 514972 B2 AU514972 B2 AU 514972B2
- Authority
- AU
- Australia
- Prior art keywords
- tracked
- roof support
- mine roof
- mine
- 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
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
- E21D23/08—Advancing mechanisms
- E21D23/081—Advancing mechanisms forming parts of the roof supports
- E21D23/087—Advancing mechanisms forming parts of the roof supports acting directly on the walls of the seam
- E21D23/088—Advancing mechanisms forming parts of the roof supports acting directly on the walls of the seam by means of wheels, rollers, caterpillars, belts or worm screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/10—Bogies; Frames
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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7626768A FR2323377A1 (en) | 1975-09-09 | 1976-09-06 | BENZYLOXYALKYL DERIVATIVES |
| FRFR7626768 | 1976-12-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU3127077A AU3127077A (en) | 1979-06-14 |
| AU514972B2 true AU514972B2 (en) | 1981-03-12 |
Family
ID=9177398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU31270/77A Expired AU514972B2 (en) | 1976-09-06 | 1977-12-06 | Tracked mine roof support |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU514972B2 (en) |
-
1977
- 1977-12-06 AU AU31270/77A patent/AU514972B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AU3127077A (en) | 1979-06-14 |
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