GB846730A - Improvements in or relating to hydraulic mine supporting devices - Google Patents
Improvements in or relating to hydraulic mine supporting devicesInfo
- Publication number
- GB846730A GB846730A GB837957A GB837957A GB846730A GB 846730 A GB846730 A GB 846730A GB 837957 A GB837957 A GB 837957A GB 837957 A GB837957 A GB 837957A GB 846730 A GB846730 A GB 846730A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- pressure
- disc
- relating
- supporting devices
- 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
- 239000007788 liquid Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 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
- E21D15/46—Telescopic props with load-measuring devices; with alarm devices
- E21D15/465—Telescopic props with load-measuring devices; with alarm devices with essential hydraulic or pneumatic details
-
- 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
- E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
- E21D15/22—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with member, pin, cross- piece, or the like, ruptured, sheared through, or permanently deformed upon excessive pressure
-
- 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)
- Actuator (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
846,730. Hydraulic pit props. EGGEMANN, W., and CAMPENHAUSEN von, E. [trading as SCHWARZ, KOMM.-GES., H.]. March 14, 1957 [March 23, 1956], No. 8379/57. Class 20(2) Excessive pressure in the pressure chamber 26 of a telescopic hydraulic pit prop, fractures a disc 12 and releases a small quantity of the pressure liquid to a chamber 13 forcing a piston rod 15 out by a piston 14 as an indication of this pressure release and the piston 14 opens a pipe 17 to a further piston and cylinder with a disc 121 which fractures at a higher pressure and makes a similar connection to a further disc 1211 and piston and cylinder 111. In a modification Fig. 3 (not shown) the cylinders may all be connected to a common pipe.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH19818A DE1000315B (en) | 1956-03-23 | 1956-03-23 | Multi-part hydraulic support element for excavation work |
Publications (1)
Publication Number | Publication Date |
---|---|
GB846730A true GB846730A (en) | 1960-08-31 |
Family
ID=7428586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB837957A Expired GB846730A (en) | 1956-03-23 | 1957-03-14 | Improvements in or relating to hydraulic mine supporting devices |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1000315B (en) |
GB (1) | GB846730A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2636791A1 (en) * | 1975-09-09 | 1977-03-17 | Voest Ag | HYDRAULIC PIT STAMP |
CN101864972A (en) * | 2010-06-04 | 2010-10-20 | 中煤北京煤矿机械有限责任公司 | Small supporting point full-protection-type tunnel bracket and supporting method thereof |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1078516B (en) * | 1956-07-17 | 1960-03-31 | Bwg Bergwerk Walzwerk | Compliant hydraulic pit ram |
NL251933A (en) * | 1959-07-03 | |||
CN106884668A (en) * | 2017-03-14 | 2017-06-23 | 苏州蓝王机床工具科技有限公司 | A kind of structure of hydraulic pressure breaking-off timber |
-
1956
- 1956-03-23 DE DESCH19818A patent/DE1000315B/en active Pending
-
1957
- 1957-03-14 GB GB837957A patent/GB846730A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2636791A1 (en) * | 1975-09-09 | 1977-03-17 | Voest Ag | HYDRAULIC PIT STAMP |
CN101864972A (en) * | 2010-06-04 | 2010-10-20 | 中煤北京煤矿机械有限责任公司 | Small supporting point full-protection-type tunnel bracket and supporting method thereof |
Also Published As
Publication number | Publication date |
---|---|
DE1000315B (en) | 1957-01-10 |
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