GB1349657A - Advancing roof supports for mine workings - Google Patents
Advancing roof supports for mine workingsInfo
- Publication number
- GB1349657A GB1349657A GB3805271A GB3805271A GB1349657A GB 1349657 A GB1349657 A GB 1349657A GB 3805271 A GB3805271 A GB 3805271A GB 3805271 A GB3805271 A GB 3805271A GB 1349657 A GB1349657 A GB 1349657A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frame
- advancement
- aug
- roof supports
- circuit
- 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
- 230000003245 working effect Effects 0.000 title 1
- 125000006850 spacer group Chemical group 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Body Structure For Vehicles (AREA)
- Actuator (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
1349657 Advancing mine roof supports K M GROETSCHEL 13 Aug 1971 [13 Aug 1970] 38052/71 Heading E1P In an advancing mine roof support assembly, Fig. 1, comprising an inner frame B adapted for selective advance relative to an outer frame A and having lateral clearance therebetween at least at the level of their superstructures, at least one of the clearance spacers has a tilt controlling member 1 therein which member is pivotally mounted on one of the frames about an axis extending longitudinally thereof and is operative by fluidactuating means to re-position the inner frame relative to the outer frame. The fluid-activating means may comprise a unit 11 having twin chambers with associated portions 14, 15, see Fig. 6, and is connected in the circuit of the advancement ram 44 as shown under the control of valves V1, V2, V3. The arrangement is such that either chamber of the unit 11 can be energised concurrently with advancement of the frame A or the frame B. For minor details of circuit, modus operandi and tilt controlling member 1, which may be spring retracted, the Specification and remaining figures (not shown) should be referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702040179 DE2040179C (en) | 1970-08-13 | Hydraulically operated device for laterally resetting the caps of traveling support units advancing in two steps for steep storage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1349657A true GB1349657A (en) | 1974-04-10 |
Family
ID=5779589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3805271A Expired GB1349657A (en) | 1970-08-13 | 1971-08-13 | Advancing roof supports for mine workings |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3800545A (en) |
| AU (1) | AU464341B2 (en) |
| GB (1) | GB1349657A (en) |
| PL (1) | PL77790B1 (en) |
| RO (1) | RO61311A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3141040C1 (en) * | 1981-10-15 | 1983-03-31 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal | Hydraulic expansion frame |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3490243A (en) * | 1966-11-16 | 1970-01-20 | Karl Maria Groetschel | Roof supports for mine workings |
| BE727824A (en) * | 1968-03-12 | 1969-07-16 | ||
| GB1287096A (en) * | 1968-10-17 | 1972-08-31 | Karl Maria Groetschel | Improvements relating to advancing roof supports for mine workings |
-
1971
- 1971-08-10 AU AU32201/71A patent/AU464341B2/en not_active Expired
- 1971-08-11 PL PL1971149969A patent/PL77790B1/pl unknown
- 1971-08-12 RO RO67959A patent/RO61311A/ro unknown
- 1971-08-13 GB GB3805271A patent/GB1349657A/en not_active Expired
- 1971-08-13 US US00171703A patent/US3800545A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| RO61311A (en) | 1976-12-15 |
| PL77790B1 (en) | 1975-04-30 |
| AU464341B2 (en) | 1975-08-21 |
| AU3220171A (en) | 1973-02-15 |
| DE2040179B1 (en) | 1971-08-05 |
| US3800545A (en) | 1974-04-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |