DE2708929A1 - Three section telescopic mine support actuator - has tubes covered with thin stainless steel wear and corrosion resistant sleeves - Google Patents
Three section telescopic mine support actuator - has tubes covered with thin stainless steel wear and corrosion resistant sleevesInfo
- Publication number
- DE2708929A1 DE2708929A1 DE19772708929 DE2708929A DE2708929A1 DE 2708929 A1 DE2708929 A1 DE 2708929A1 DE 19772708929 DE19772708929 DE 19772708929 DE 2708929 A DE2708929 A DE 2708929A DE 2708929 A1 DE2708929 A1 DE 2708929A1
- Authority
- DE
- Germany
- Prior art keywords
- cylinder
- stainless steel
- protective jacket
- protective
- corrosion resistant
- 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.)
- Withdrawn
Links
- 230000007797 corrosion Effects 0.000 title claims abstract description 7
- 238000005260 corrosion Methods 0.000 title claims abstract description 7
- 239000010935 stainless steel Substances 0.000 title claims abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 230000000750 progressive effect Effects 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 241001669679 Eleotris Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Coating By Spraying Or Casting (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
Teleskopzylinder für den untertägigen SchildausbauTelescopic cylinder for underground shield support
Die vorliegende Erfindung betrifft einen Teleskopzylinder aus Stahl zum Abstützen des Hangend- oder Bruchschildes beim untertägigen schreitenden Schildausbau, mit wenigstens einem Innen- und Außenzylinder.The present invention relates to a steel telescopic cylinder to support the hanging or breakage shield during underground shield support, with at least one inner and one outer cylinder.
Teleskopzylinder dieser Art sind bekannt, die zur Erhöhung der Korrosionsbeständigkeit vernickelte Oberflächen besitzen.Telescopic cylinders of this type are known to increase corrosion resistance have nickel-plated surfaces.
Ein derartiges Vernickeln der einzelnen Zylinder ist jedoch teuer und aufwendig.Such nickel-plating of the individual cylinders is expensive, however and laborious.
Aufgabe der vorliegenden Erfindung ist es daher, einen Teleskopzylinder der eingangs genannten Art zu schaffen, der einfacher und billiger herzustellen ist.The object of the present invention is therefore to provide a telescopic cylinder to create the type mentioned, which is easier and cheaper to manufacture is.
Diese Aufgabe wird dadurch gelöst, daß der Innenzylinder einen äußeren Schutzmantel und der Außenzylinder einen inneren Schutzmantel aus verschleiß- und korrosionsbeständigem Metall aufweisen.This object is achieved in that the inner cylinder has an outer one Protective jacket and the outer cylinder have an inner protective jacket made of wear and tear have corrosion-resistant metal.
Hierbei ist es besonders zweckmäßig, wenn der Schutzmantel auf dem Innenzylinder auf diesen aufgeschrumpft ist.It is particularly useful if the protective jacket on the Inner cylinder is shrunk onto this.
Ferner kann der Außenzylinder auch an seiner Außenseite einen Schutzmantel aus verschleiß- und korrosionsbeständigem Metall besitzen, während der innere Schutzmantel des Außenzylinders zweckmäßigerweise mit einem Boden versehen ist. Dies gilt auch für diejenigen Innenzylinder, die einen weiteren Innenzylinder aufnehmen, wenn der Teleskopzylinder aus mehr als zwei Zylindern gebildet wird.Furthermore, the outer cylinder can also have a protective jacket on its outside made of wear-resistant and corrosion-resistant metal, while the inner protective sheath of the outer cylinder is expediently provided with a bottom. this is also valid for those inner cylinders that accommodate another inner cylinder when the Telescopic cylinder is formed from more than two cylinders.
FUr die SchutzmAntel kommen als Material Kupferlegierungen wie Messing oder Bronze, Titan oder dergleichen infrage, jedoch werden Schutzmantel aus Edelstahlrohren bevorzugt. Letztere können eine Dicke von o,2 bis 1 mm besitzen.Copper alloys such as brass are used as the material for the protective sheaths or bronze, titanium or the like, but protective sheaths are made of stainless steel tubes preferred. The latter can have a thickness of 0.2 to 1 mm.
Die Erfindung wird im folgenden anhand der beigefügten Abbildung naher erläutert, in der ein schreitender Schildausbau dargestellt ist.The invention is explained in more detail below with reference to the attached figure explained, in which a progressive shield expansion is shown.
Das Schildausbaugestell besteht aus der auf dem Liegenden angeordneten Liegendschwelle 1, an deren rückwärtigem Ende ein Bruchschild 2 gelenkig angeordnet ist. Der Bruchschild 2 ist mit einem Hangendschild 3 über ein Gelenk 4 verbunden, wobei in diesem Ausführungsbeispiel der Hangendschild 3 durch einen Teleskopzylinder 5 am Gelenk 4 abgestützt wird, wobei der Teleskopzylinder 5 gelenkig mit der Liegendschwelle 1 verbunden ist.The shield support frame consists of the one arranged on the horizontal plane Lying threshold 1, at the rear end of which a fracture shield 2 is articulated is. The breakage shield 2 is connected to a hanging shield 3 via a joint 4, in this embodiment, the hanging shield 3 by a telescopic cylinder 5 is supported on the joint 4, the telescopic cylinder 5 being articulated with the lying sleeper 1 is connected.
Im dargestellten Ausführungsbeispiel besteht der Teleskopzylinder 5 aus einem Außenzylinder 6 und zwei Innenzylindern 7, 8.In the illustrated embodiment, there is the telescopic cylinder 5 from an outer cylinder 6 and two inner cylinders 7, 8.
Entsprechend der Schnittdarstellung für den mittleren Zylinder 7 des Teleskopzylinders 5 weist dieser einen äußeren aufgeschrumpften Schutzmantel 9 sowie einen inneren Schutzmantel 1o auf. Entsprechendes gilt für den Außenzylinder 6, während der Innenzylinder 8 lediglich einen äußeren Schutzmantel 9 aufweist.According to the sectional view for the middle cylinder 7 of the Telescopic cylinder 5, this has an outer shrunk-on protective jacket 9 as well an inner protective jacket 1o. The same applies to the outer cylinder 6, while the inner cylinder 8 only has an outer protective jacket 9.
Die SchutzmAntel 9 besitzen hierbei zweckmäßigerweise einen Boden 11.The protective cover 9 here expediently have a bottom 11.
Claims (7)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19772708929 DE2708929B2 (en) | 1977-03-02 | 1977-03-02 | Telescopic ram for underground shield support |
| GB736078A GB1592090A (en) | 1977-03-02 | 1978-02-23 | Cylinders |
| HURE000624 HU179571B (en) | 1977-03-02 | 1978-03-01 | Corrosion-proof cylindrical steel piece particularly cyllindrical steel member of hydraulic prop |
| JP2343578A JPS53107547A (en) | 1977-03-02 | 1978-03-01 | Cylinder for highhcorrosive load |
| PL20499978A PL117774B1 (en) | 1977-03-02 | 1978-03-01 | Cylinder resistant to strong corrosive action |
| FR7806034A FR2382600A1 (en) | 1977-03-02 | 1978-03-02 | HYDRAULIC CYLINDER OR SEAL INTENDED TO BE USED IN A VERY CORROSIVE ENVIRONMENT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19772708929 DE2708929B2 (en) | 1977-03-02 | 1977-03-02 | Telescopic ram for underground shield support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2708929A1 true DE2708929A1 (en) | 1978-09-07 |
| DE2708929B2 DE2708929B2 (en) | 1980-04-17 |
Family
ID=6002519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19772708929 Withdrawn DE2708929B2 (en) | 1977-03-02 | 1977-03-02 | Telescopic ram for underground shield support |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE2708929B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4640650A (en) * | 1983-06-09 | 1987-02-03 | Bochumer Eisenhutte Heintzmann Gmbh & Co. Kg | Hydraulically operated unit for roof support |
| CN114320390A (en) * | 2022-01-20 | 2022-04-12 | 山西路桥第八工程有限公司 | Highway tunnel engineering is with preventing square device that collapses |
-
1977
- 1977-03-02 DE DE19772708929 patent/DE2708929B2/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4640650A (en) * | 1983-06-09 | 1987-02-03 | Bochumer Eisenhutte Heintzmann Gmbh & Co. Kg | Hydraulically operated unit for roof support |
| CN114320390A (en) * | 2022-01-20 | 2022-04-12 | 山西路桥第八工程有限公司 | Highway tunnel engineering is with preventing square device that collapses |
| CN114320390B (en) * | 2022-01-20 | 2023-06-16 | 山西路桥第八工程有限公司 | Collapse prevention device for expressway tunnel engineering |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2708929B2 (en) | 1980-04-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| 8230 | Patent withdrawn |