GB936483A - Double-acting hydraulic shifting piston and cylinder for coal face conveyors - Google Patents
Double-acting hydraulic shifting piston and cylinder for coal face conveyorsInfo
- Publication number
- GB936483A GB936483A GB1759560A GB1759560A GB936483A GB 936483 A GB936483 A GB 936483A GB 1759560 A GB1759560 A GB 1759560A GB 1759560 A GB1759560 A GB 1759560A GB 936483 A GB936483 A GB 936483A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- face
- area
- cylinder
- double
- 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
- 239000003245 coal Substances 0.000 title 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)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
936,483. Hydraulic pushing jacks. GEWERKSCHAFT EISENHUTTE WESTFALIA. May 18, 1960 [May 26, 1959], No. 17595/60. Class 78 (3). The working chambers 12, 13 of an hydraulic pushing jack for advancing a coal-face conveyer are fed from the same pressure source through longitudinal ducts 17, 18 in the piston-rod 9. The diameter of the piston-rod 9 is so chosen that the area of the annular face of the piston 8 bounding chamber 13 is between one quarter and one fifth of the area of the full piston face bounding chamber 12. The ratio between the area of the annular piston face and the area of the full piston face is substantially the same as the ratio between the force necessary for drawing-up the cylinder 1 and trailing prop 7 and the force required for shifting the conveyer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG0027133 | 1959-05-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB936483A true GB936483A (en) | 1963-09-11 |
Family
ID=7123134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1759560A Expired GB936483A (en) | 1959-05-26 | 1960-05-18 | Double-acting hydraulic shifting piston and cylinder for coal face conveyors |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE591004A (en) |
| GB (1) | GB936483A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902336A (en) * | 2017-11-10 | 2018-04-13 | 中煤张家口煤矿机械有限责任公司 | A kind of chute and drag conveyor at adjustable shovel angle |
-
1960
- 1960-05-18 GB GB1759560A patent/GB936483A/en not_active Expired
- 1960-05-19 BE BE591004A patent/BE591004A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902336A (en) * | 2017-11-10 | 2018-04-13 | 中煤张家口煤矿机械有限责任公司 | A kind of chute and drag conveyor at adjustable shovel angle |
Also Published As
| Publication number | Publication date |
|---|---|
| BE591004A (en) | 1960-11-21 |
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