DE2616964A1 - Mine support linkage between roof and floor members - acts with telescopic ram to ensure balance between forward forces - Google Patents

Mine support linkage between roof and floor members - acts with telescopic ram to ensure balance between forward forces

Info

Publication number
DE2616964A1
DE2616964A1 DE19762616964 DE2616964A DE2616964A1 DE 2616964 A1 DE2616964 A1 DE 2616964A1 DE 19762616964 DE19762616964 DE 19762616964 DE 2616964 A DE2616964 A DE 2616964A DE 2616964 A1 DE2616964 A1 DE 2616964A1
Authority
DE
Germany
Prior art keywords
roof
supports
lemniscate
end cap
acts
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.)
Pending
Application number
DE19762616964
Other languages
German (de)
Inventor
Hans Ing Grad Buell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hemscheidt Hermann Maschinenfabrik GmbH and Co
Original Assignee
Hemscheidt Hermann Maschinenfabrik GmbH and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hemscheidt Hermann Maschinenfabrik GmbH and Co filed Critical Hemscheidt Hermann Maschinenfabrik GmbH and Co
Priority to DE19762616964 priority Critical patent/DE2616964A1/en
Publication of DE2616964A1 publication Critical patent/DE2616964A1/en
Pending legal-status Critical Current

Links

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
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/0418—Positioning devices and stabilizing means for the 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
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E21D23/0013—Frame type supports
    • 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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices

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)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The mine roof support has two floor supports and roof supports interconnected by telescopic hydraulic rams. An advancing system is mounted on the floor supports behind a scraper conveyor, with the front part of the roof supports overhanging the conveyor. A set of swinging arms are between a lower pillar and a telescopic ram controlling the position of the roof supports. These arms describe an elliptical path to ensure the correct alignment of the roof supports as they are moved forwards or backwards, or angled. This control ram is divided into compartments interconnected with the hydraulic circuit so that the horizontal force component on the roof supports is always greater than on the floor supports during advance.

Description

Titel: Hydraulischer StrebausbauTitle: Hydraulic longwall mining

Die Erfindung betrifft einen hydraulischen Strebausbau, bestehend aus einem Ausbaubock mit je zwei seitlichen, zwischen Liegendschiene und Hangendkappe angeordneten Stempeln, einer unteren mittleren Vorschreiteinrichtung und einer der Stabilisierung des Ausbaubocks dienenden mittleren Lemniskatenverbindung zwischen Liegendschiene und Hangendkappe.The invention relates to a hydraulic longwall construction, consisting from an extension frame with two side rails between the horizontal rail and the hanging end cap arranged punches, a lower middle advancing device and one of the Stabilization of the extension frame serving the middle lemniscate connection between Horizontal rail and hanging end cap.

Die Lemniskatenverbindung dient bekanntermaßen der Aufgabe, den Ausbaubock beim Vorschreiten zu stabilisieren, das heißt, die Stempel über ihren gesamten Hub stets bankrecht zu halten.As is known, the lemniscate connection serves the purpose of supporting the support frame to stabilize while advancing, that is, the punch over its entire stroke always to comply with banking law.

Beim Auftreten starker Horizontalkräfte am Hangenden besteht, wenn die Lemniskate nicht unangemessen überdimensioniert werden würde, die Gefahr der Zerstörung der Lemniskate. Durch eine Überdimensionierung wird aber der ganze Ausbau schwerfällig und praktisch unverwendbar, so daß ein anderer Weg gefunden werden muß, um eine normal ausgelegte Lemniskatenverbindung vor Uberbelastung zu sichern.If strong horizontal forces occur on the hanging wall, if the lemniscate would not be inappropriately oversized, the risk of being Destruction of the lemniscate. However, oversizing the entire expansion cumbersome and practically unusable, so that another way to be found must in order to secure a normally designed lemniscate connection from overload.

Die Aufgabe der Erfindung besteht somit darin, einer Überbelastung der Lemniskate zu begegnen, wenn ein Hangendschub in Richtung auf den Kohlenstoß oder in Richtung auf die Versatzseite auftritt.The object of the invention is thus to avoid overload to counter the lemniscate when a hillside thrust in the direction of the coal face or occurs toward the offset side.

Erfindungsgemäß ist der Aufgabe entsprechend die Lemniskate am oberen Ende mit einem an der Hangendkappe angreifenden, kardanisch aufgehängten hydraulischen Ausgleichszylinder ausgerüstet, der so ausgebildet ist, daß er durch unterschiedliche Kolbenflächen und mechanische Anschläge innerhalb des Zylinders zum Zwecke der Stabilisierung immer eine bestimmte Grundstellung hat, und der in seinen Dimensionen so ausgelegt ist, daß die Horizontalkräfte am Hangenden immer etwas größer sind als die Horizontalkräfte beim Schreiten am Liegenden.According to the invention, the task is the lemniscate at the top End with a hydraulic gimbal attached to the hanging end cap Compensating cylinder equipped, which is designed so that he due to different piston surfaces and mechanical stops within the cylinder always has a certain basic position for the purpose of stabilization, and the in its dimensions are designed so that the horizontal forces on the hanging wall always are slightly greater than the horizontal forces when walking while lying down.

Durch diese Lösung wird erreicht, daß die Lemniskatenverbindung normal dimensioniert werden kann und eine Zerstörung der Lemniskate beim Auftreten starker Horizontalkräfte am Hangenden auf einfache Weise verhindert werden kann.This solution ensures that the lemniscate connection is normal can be dimensioned and a destruction of the lemniscate when it occurs stronger Horizontal forces on the hanging wall can be prevented in a simple manner.

Die Zeichnung zeigt eine beispielsweise Ausbildung des Ausbaubocks, und zwar zeigt Fig. 1 einen derartigen Ausbaubock in seitlicher Draufsicht, und Fig. 2 den hydraulischen Ausgleichszylinder der Lemniskate im Längsschnitt.The drawing shows an example of the construction of the supporting frame, namely Fig. 1 shows such a trestle in a side plan view, and 2 shows the hydraulic compensating cylinder of the lemniscate in longitudinal section.

Mit 1 ist die Liegendschiene bezeichnet, die beidseitig mit je zwei hydraulischen Stempeln 2 und 3 die Hangendkappe 4 trägt. Diese ist in bekannter Weise mit durch Zylinder 5 und 6 anstellbare schwenkbare Vorderkappen 7 und Hinterkappen 8 ausgerüstet. Zur Stabilisierung des so ausgebildeten Ausbaubocks ist zwischen Liegendschiene und Hangendkappe 4 eine mittlere Lemniskatenverbindung 9 eingeschaltet, die oberhalb der unteren mittleren Vorschreiteinrichtung 10 auf der Liegendschiene 1 aufgebaut ist und an ihrem oberen Ende mit einem hydraulischen Ausgleichszylinder 11 ausgerüstet ist, der an der Hangendkappe 4 angreift und dort kardanisch auf gehängt ist.1 with the lying rail is referred to, the two on both sides hydraulic rams 2 and 3, the hanging end cap 4 carries. This is known in Way with adjustable by cylinder 5 and 6 pivotable front caps 7 and rear caps 8 equipped. To stabilize the support frame designed in this way is between Lying rail and hanging end cap 4 a middle lemniscate connection 9 switched on, the one above the lower middle advancing device 10 on the prone rail 1 is constructed and at its upper end with a hydraulic compensating cylinder 11 is equipped, which engages the hanging end cap 4 and gimbaled there is.

Der hydraulische Ausgeleichszyinder 11 besitzt unterschiedliche Kolbenflächen 12 und 13 und mechanische Anschläge 14 und 15 innerhalb des Zylinders, so daß er zum Zwecke der Stabilisierung immer eine bestimmte Grundstellung hat. Er ist in seinen Dimensionen so ausgelegt, daß die Horizontalkräfte am Hangenden immer etwas größer sind als die Horizontalkräfte beim Schreiten am Liegenden.The hydraulic balancing cylinder 11 has different piston areas 12 and 13 and mechanical stops 14 and 15 within the cylinder so that he always has a certain basic position for the purpose of stabilization. He is in its dimensions designed so that the horizontal forces on the hanging wall always something are greater than the horizontal forces when walking while lying down.

Anspruch: Leerseite Claim: Blank page

Claims (1)

Patentanspruch: Hydraulischer Strebausbau, bestehend aus einem Ausbaubock mit je zwei seitlichen zwischen Liegendschiene (1) und Hangendkappe (4) angeordneten Stempeln (2,3), einer unteren mittleren Vorschreiteinrichtung (10) und einer der Stabilisierung des Ausbaubocks dienenden mittleren Lemniskatenverbindung (9) zwischen Liegendschiene (1) und Hangendkappe (4), dadurch gekennzeichnet, daß die Lemniskate (9) am oberen Ende mit einem an der Hangendkappe (4) angreifenden, kardanisch aufgehängten hydraulischen Ausgleichszylinder (11) ausgerüstet ist, der so ausgebildet ist, daß er durch unterschiedliche Kolbenflächen (12, 13) und mechanische Anschläge (14, 15) innerhalb des Zylinders zum Zwecke der Stabilisierung immer eine bestimmte Grundstellung hat, und der in seinen Dimensionen so ausgelegt ist, daß die Horizontalkräfte am Hangenden immer etwas größer sind als die Horizontalkräfte beim Schreiten am Liegenden.Claim: Hydraulic longwall construction, consisting of a support frame each with two side rails arranged between the horizontal rail (1) and the hanging end cap (4) Stamping (2,3), a lower middle advancing device (10) and one of the The middle lemniscate connection (9) between Horizontal rail (1) and hanging end cap (4), characterized in that the lemniscate (9) at the upper end with a gimbal attached to the hanging end cap (4) hydraulic compensating cylinder (11) is equipped, which is designed so that different piston surfaces (12, 13) and mechanical stops (14, 15) always has a certain basic position within the cylinder for the purpose of stabilization has, and which is designed in its dimensions so that the horizontal forces on Hanging walls are always slightly larger than the horizontal forces when walking on a lying person.
DE19762616964 1976-04-17 1976-04-17 Mine support linkage between roof and floor members - acts with telescopic ram to ensure balance between forward forces Pending DE2616964A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19762616964 DE2616964A1 (en) 1976-04-17 1976-04-17 Mine support linkage between roof and floor members - acts with telescopic ram to ensure balance between forward forces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762616964 DE2616964A1 (en) 1976-04-17 1976-04-17 Mine support linkage between roof and floor members - acts with telescopic ram to ensure balance between forward forces

Publications (1)

Publication Number Publication Date
DE2616964A1 true DE2616964A1 (en) 1977-10-27

Family

ID=5975622

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762616964 Pending DE2616964A1 (en) 1976-04-17 1976-04-17 Mine support linkage between roof and floor members - acts with telescopic ram to ensure balance between forward forces

Country Status (1)

Country Link
DE (1) DE2616964A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2721381A1 (en) 1977-05-12 1978-11-16 Kloeckner Werke Ag Advancing hydraulic mine support - has two independent stabilising linkages between floor and roof members and clamping jaws
DE2808487A1 (en) * 1978-02-28 1979-09-06 Gewerk Eisenhuette Westfalia Mine support and conveyor system - has roof member overhanging face conveyor and rear shield diverting roof material onto rear conveyor
FR2534311A1 (en) * 1982-10-06 1984-04-13 Gewerk Eisenhuette Westfalia Bulk back-filled steep deposit mine support frame
FR2560284A1 (en) * 1983-12-20 1985-08-30 Voest Alpine Ag MOBILE SUPPORT BRIDGE FOR ROOF SUPPORT IN UNDERGROUND CAVITIES

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2721381A1 (en) 1977-05-12 1978-11-16 Kloeckner Werke Ag Advancing hydraulic mine support - has two independent stabilising linkages between floor and roof members and clamping jaws
DE2808487A1 (en) * 1978-02-28 1979-09-06 Gewerk Eisenhuette Westfalia Mine support and conveyor system - has roof member overhanging face conveyor and rear shield diverting roof material onto rear conveyor
FR2534311A1 (en) * 1982-10-06 1984-04-13 Gewerk Eisenhuette Westfalia Bulk back-filled steep deposit mine support frame
FR2560284A1 (en) * 1983-12-20 1985-08-30 Voest Alpine Ag MOBILE SUPPORT BRIDGE FOR ROOF SUPPORT IN UNDERGROUND CAVITIES

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