CS241518B2 - Hydraulic cylinder especially mining raker with combined function - Google Patents
Hydraulic cylinder especially mining raker with combined function Download PDFInfo
- Publication number
- CS241518B2 CS241518B2 CS829142A CS914282A CS241518B2 CS 241518 B2 CS241518 B2 CS 241518B2 CS 829142 A CS829142 A CS 829142A CS 914282 A CS914282 A CS 914282A CS 241518 B2 CS241518 B2 CS 241518B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- cylinder
- space
- hydraulic
- inner cylinder
- mine
- Prior art date
Links
- 238000005065 mining Methods 0.000 title claims description 5
- 230000007423 decrease Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000011068 loading method Methods 0.000 abstract description 3
- 238000013016 damping Methods 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 239000012528 membrane Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 8
- 206010052428 Wound Diseases 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- 239000011796 hollow space material Substances 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Fluid-Damping Devices (AREA)
- Actuator (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Prostheses (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU813767A HU183739B (en) | 1981-12-15 | 1981-12-15 | Hydraulic cylinder of combination operation particularly prop |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS914282A2 CS914282A2 (en) | 1985-08-15 |
| CS241518B2 true CS241518B2 (en) | 1986-03-13 |
Family
ID=10965396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS829142A CS241518B2 (en) | 1981-12-15 | 1982-12-14 | Hydraulic cylinder especially mining raker with combined function |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS58131401A (de) |
| AU (1) | AU9152682A (de) |
| CS (1) | CS241518B2 (de) |
| DE (2) | DE3246481A1 (de) |
| FR (1) | FR2518163A1 (de) |
| GB (1) | GB2111594B (de) |
| HU (1) | HU183739B (de) |
| PL (1) | PL239587A1 (de) |
| ZA (1) | ZA829170B (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3410269A1 (de) * | 1984-03-21 | 1985-09-26 | Ecker Maschinenbau GmbH, 6680 Neunkirchen | Hydraulischer grubenstempel |
| PL254324A1 (en) * | 1985-07-01 | 1987-03-09 | Katowickie Gwarectwo Weglowe K | Roof support for use in crumpable beds |
| AU2789895A (en) * | 1994-06-13 | 1996-01-05 | Contitech Luftfedersysteme Gmbh | Mine prop |
| WO1999007980A1 (en) * | 1997-08-12 | 1999-02-18 | Chengeta, Cuthbert | A pre-stressing device for a mine prop |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE968782C (de) * | 1949-05-10 | 1958-04-10 | Kronprinz Ag | Hydraulischer Grubenstempel |
| US2753036A (en) * | 1952-03-06 | 1956-07-03 | Joy Mfg Co | Mine roof support-equipped mining apparatus |
| NL251933A (de) * | 1959-07-03 | |||
| US3191506A (en) * | 1962-03-19 | 1965-06-29 | Ledeen Inc | Hydropneumatic prop |
| US3410549A (en) * | 1966-07-05 | 1968-11-12 | Edward G. Cheak | Vehicle suspension |
| DE1959109U (de) * | 1966-12-16 | 1967-04-27 | Kloeckner Werke Ag | Hydraulischer grubenstempel. |
| FR2181525B1 (de) * | 1972-04-27 | 1976-10-29 | Gratzmuller Jean Louis | |
| GB1436416A (en) * | 1972-08-11 | 1976-05-19 | Zaklady K Mechanizacyjne Przem | Mine support |
| FR2300894A1 (fr) * | 1975-02-12 | 1976-09-10 | Bennes Marrel | Dispo |
| AT339237B (de) * | 1975-09-09 | 1977-10-10 | Voest Ag | Hydraulischer grubenstempel |
-
1981
- 1981-12-15 HU HU813767A patent/HU183739B/hu not_active IP Right Cessation
-
1982
- 1982-12-13 FR FR8220860A patent/FR2518163A1/fr active Pending
- 1982-12-14 ZA ZA829170A patent/ZA829170B/xx unknown
- 1982-12-14 CS CS829142A patent/CS241518B2/cs unknown
- 1982-12-14 GB GB08235619A patent/GB2111594B/en not_active Expired
- 1982-12-14 AU AU91526/82A patent/AU9152682A/en not_active Abandoned
- 1982-12-15 DE DE19823246481 patent/DE3246481A1/de not_active Withdrawn
- 1982-12-15 DE DE8235289U patent/DE8235289U1/de not_active Expired
- 1982-12-15 JP JP57220014A patent/JPS58131401A/ja active Pending
- 1982-12-15 PL PL23958782A patent/PL239587A1/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE3246481A1 (de) | 1983-06-23 |
| PL239587A1 (en) | 1983-08-01 |
| CS914282A2 (en) | 1985-08-15 |
| ZA829170B (en) | 1983-10-26 |
| FR2518163A1 (fr) | 1983-06-17 |
| DE8235289U1 (de) | 1986-06-05 |
| AU9152682A (en) | 1983-06-23 |
| HU183739B (en) | 1984-05-28 |
| GB2111594B (en) | 1986-02-05 |
| GB2111594A (en) | 1983-07-06 |
| JPS58131401A (ja) | 1983-08-05 |
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