FR2401308A1 - Multiple cutting drum coal cutting machine - has swinging arm at each end, with each arm carrying two contra-rotating cutting drums - Google Patents
Multiple cutting drum coal cutting machine - has swinging arm at each end, with each arm carrying two contra-rotating cutting drumsInfo
- Publication number
- FR2401308A1 FR2401308A1 FR7726386A FR7726386A FR2401308A1 FR 2401308 A1 FR2401308 A1 FR 2401308A1 FR 7726386 A FR7726386 A FR 7726386A FR 7726386 A FR7726386 A FR 7726386A FR 2401308 A1 FR2401308 A1 FR 2401308A1
- Authority
- FR
- France
- Prior art keywords
- arm
- cutting
- drums
- contra
- rotating
- 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.)
- Pending
Links
- 239000003245 coal Substances 0.000 title abstract 2
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/02—Machines which completely free the mineral from the seam solely by slitting
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)
- Nonmetal Cutting Devices (AREA)
Abstract
The rotary drum coal cutting machine (1) mounted on slides (4) to travel above a face conveyor (5), has a swinging arm (10) at each end, carrying the cutting drums (13). Each arm tilts about a horizontal axis (16), and a drum is mounted each end of the arm, rotating about an axis (14) parallel to this axis. Each drum has a spiral cutting groove on its cutting face. The two drums on an arm rotate in opposite directions to each other (17, 18). These two arms are swung by a double acting hydraulic ram. Alternatively, each arm may be mounted in turn on an intermediate arm, attached at the other end to a pivot spindle on the end of the machine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7726386A FR2401308A1 (en) | 1977-08-24 | 1977-08-24 | Multiple cutting drum coal cutting machine - has swinging arm at each end, with each arm carrying two contra-rotating cutting drums |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7726386A FR2401308A1 (en) | 1977-08-24 | 1977-08-24 | Multiple cutting drum coal cutting machine - has swinging arm at each end, with each arm carrying two contra-rotating cutting drums |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2401308A1 true FR2401308A1 (en) | 1979-03-23 |
Family
ID=9194890
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7726386A Pending FR2401308A1 (en) | 1977-08-24 | 1977-08-24 | Multiple cutting drum coal cutting machine - has swinging arm at each end, with each arm carrying two contra-rotating cutting drums |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2401308A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB810413A (en) * | 1957-06-13 | 1959-03-18 | Arnold Glenn Wilcox | Improvements in or relating to mineral mining machines |
US2981527A (en) * | 1957-10-21 | 1961-04-25 | Gelsenkirchener Bergwerks Ag | Mining machine having cutting and breaking rolls and suction transporting means |
FR2107795A5 (en) * | 1970-09-18 | 1972-05-05 | Anderson Mavor Ltd | |
DE2633544A1 (en) * | 1975-07-26 | 1977-02-10 | Summit Mining | EXTRACTION MACHINE |
US4027918A (en) * | 1975-06-30 | 1977-06-07 | Taiheiyo Engineering Incorporated | Longwall coal mining machine with plural cutters on sub-ranging arm |
FR2400108A1 (en) * | 1977-08-11 | 1979-03-09 | Summit Mining | Driving head for coal face cutting machine - has front mounted pivoting lever on which spiral grooved cutting rollers are mounted |
-
1977
- 1977-08-24 FR FR7726386A patent/FR2401308A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB810413A (en) * | 1957-06-13 | 1959-03-18 | Arnold Glenn Wilcox | Improvements in or relating to mineral mining machines |
US2981527A (en) * | 1957-10-21 | 1961-04-25 | Gelsenkirchener Bergwerks Ag | Mining machine having cutting and breaking rolls and suction transporting means |
FR2107795A5 (en) * | 1970-09-18 | 1972-05-05 | Anderson Mavor Ltd | |
US4027918A (en) * | 1975-06-30 | 1977-06-07 | Taiheiyo Engineering Incorporated | Longwall coal mining machine with plural cutters on sub-ranging arm |
DE2633544A1 (en) * | 1975-07-26 | 1977-02-10 | Summit Mining | EXTRACTION MACHINE |
FR2400108A1 (en) * | 1977-08-11 | 1979-03-09 | Summit Mining | Driving head for coal face cutting machine - has front mounted pivoting lever on which spiral grooved cutting rollers are mounted |
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