NL298194A - - Google Patents
Info
- Publication number
- NL298194A NL298194A NL298194DA NL298194A NL 298194 A NL298194 A NL 298194A NL 298194D A NL298194D A NL 298194DA NL 298194 A NL298194 A NL 298194A
- Authority
- NL
- Netherlands
- Prior art keywords
- section
- arm
- return
- ducts
- coal
- Prior art date
Links
- 239000003245 coal Substances 0.000 abstract 2
- 239000012530 fluid Substances 0.000 abstract 2
- 238000013016 damping Methods 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
- E21F13/002—Crushing devices specifically for conveying in mines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/10—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member
- B02C4/12—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member in the form of a plate
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Crushing And Grinding (AREA)
- Feeding Of Articles To Conveyors (AREA)
Abstract
980,726. Coal &c. crushers. A. OELLRICH, [trading as MASCHINENFABRIK UND EISENGIESSEREI A. BEIEN]. Sept. 19, 1963 [Oct. 13, 1962], No. 36959/63. Heading B2A. [Also in Division F2] A through-feeding crusher for coal &c. comprises a crusher roll 3 mounted on a hinged arm 1 which is yieldably deflectable against the resistance of one or more double-acting damping cylinders 7 which each contain a piston 9 which divides the cylinder into two chambers filled with hydraulic fluid and communicating exclusively with one another through one or more connections containing a flowconstricting section. The piston 9 is traversed by one or more ducts 13, Fig. 3, to damp the movement of the arm 1 when it is forced upwards. Fluid is permitted to return through a larger cross-section so that the arm 1 can return very quickly. Alternatively, the ducts 13 may have a non-variable small cross-section, a by-pass pipe 14 being provided with a non- return valve 15 which preferably has an adjustable flow section.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1962M0042681 DE1876837U (en) | 1962-10-13 | 1962-10-13 | THROUGH CRUSHERS FOR COAL AND OTHER MINERALS, IN PARTICULAR FOR UNDERGROUND OPERATION. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL298194A true NL298194A (en) |
Family
ID=33146488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL298194D NL298194A (en) | 1962-10-13 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1876837U (en) |
| FR (1) | FR1378174A (en) |
| GB (1) | GB980726A (en) |
| NL (1) | NL298194A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1296938B (en) * | 1965-09-24 | 1969-06-04 | Stamicarbon | Impact roll crusher |
| GB2116875B (en) * | 1979-02-03 | 1984-03-21 | Mmd Design And Consultance Lim | Mineral breakers |
-
0
- NL NL298194D patent/NL298194A/xx unknown
-
1962
- 1962-10-13 DE DE1962M0042681 patent/DE1876837U/en not_active Expired
-
1963
- 1963-09-19 GB GB3695963A patent/GB980726A/en not_active Expired
- 1963-09-26 FR FR948798A patent/FR1378174A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1378174A (en) | 1964-11-13 |
| DE1876837U (en) | 1963-08-01 |
| GB980726A (en) | 1965-01-20 |
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