EP0014188B1 - Ausbaubock - Google Patents

Ausbaubock Download PDF

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Publication number
EP0014188B1
EP0014188B1 EP19800890002 EP80890002A EP0014188B1 EP 0014188 B1 EP0014188 B1 EP 0014188B1 EP 19800890002 EP19800890002 EP 19800890002 EP 80890002 A EP80890002 A EP 80890002A EP 0014188 B1 EP0014188 B1 EP 0014188B1
Authority
EP
European Patent Office
Prior art keywords
shield
supporting structure
struts
floor frame
mine roof
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
Application number
EP19800890002
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0014188A1 (de
Inventor
Heinrich Süssenbeck
Alfred Zitz
Andreas Dipl. Ing. Pakh
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.)
Voestalpine AG
Original Assignee
Voestalpine AG
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
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Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0014188A1 publication Critical patent/EP0014188A1/de
Application granted granted Critical
Publication of EP0014188B1 publication Critical patent/EP0014188B1/de
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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
    • E21D23/0004—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
    • E21D23/0034—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 comprising a goaf shield articulated to a base member
    • 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

Definitions

  • the invention relates to a jack, in which the rear cap is supported by a stamp against a floor frame and a shield is pivotally hinged to the rear cap, which is held in its pivot position by struts, for use in powerful seams in which the above Hanging coal is removed from the trestle and passed over the sign to a retractable conveyor arranged on the offset side (DE-A-2 705 460).
  • a conveyor is arranged on the front of the construction frame, in which the coal extracted by a cutting tool on the front of the construction frame is conveyed away.
  • a conveyor is also arranged on the side of the offset (of the old man) and a sign is pivotably articulated on the rear cap, which directs the extracted coal to this conveyor arranged on the side of the old man.
  • the hanging coal which either breaks down by itself or has to be loosened by shooting, can accumulate in large pieces and the conveyor must therefore be protected from the direct impact of the coal, since otherwise the conveyor can be damaged or get stuck when the coal quantity is too large.
  • the shield must therefore absorb the impact of the coal and carry the layer of coal.
  • the shield articulated on the rear cap is supported against the rear cap by a hydraulic cylinder-piston unit and can be adjusted in its pivoting position by this.
  • the shield can be brought into the correct position in order to guide the coal correctly and to protect the conveyor against the direct impact of the coal, but now the entire load and strain on the shield must be absorbed by the stamps. This means that the force of the punches cannot be fully used as a support force for the roof.
  • an extension stand which has a break plate which is held in its pivoted position by struts (handlebars) and is supported on the lying surface by means of drag stamps.
  • the conveyor on the offset side is pulled by a hydraulic cylinder.
  • the invention now aims to provide an extension bracket for the above-mentioned extraction case which, in addition to being highly stable, should also be distinguished by the fact that the hanging coal can be removed safely without overloading the conveyor.
  • the training according to the invention consists essentially in that the shield is supported in its pivoted position only by the struts against the floor frame, which are pivotally articulated both on the shield and on the floor frame and that in the shield at least one extendable in the direction of the shield Slider is guided through which the effective length of the shield for guiding the hanging coal can be changed.
  • the forces acting on the shield are introduced directly into the base frame of the trestle, so that the force of the stamp can largely be used as a supporting force for the roof and the rear cap is relieved of most of the forces acting on the shield.
  • these struts serve to ensure the stable mounting of the movable slide.
  • the fact that the effective length of the sign can be changed by the extendable slide means that the ejection end of the sign can be brought into the precisely correct position in relation to the conveyor in every position of the sign.
  • Such a slide would be a significant risk of stability in the known designs of the support frame, in which the shield is only hinged to the hanging end cap, and a stable and secure construction is only created in combination with the struts supporting the shield.
  • the arrangement is such that the struts supporting the shield against the floor frame are rigid.
  • This achieves a very high degree of rigidity in the support of the shield, so that the shield is able to absorb very large loads and strains caused by supporting coal.
  • the training with rigid struts makes it possible to reduce the weight of the construction while maintaining stability. But precisely because with such a construction there is a different overhang of the shield over the conveying device when the shield is pivoted, the measure of arranging an extendable cap on the shield is of essential importance in such a design.
  • an oblique strut is preferably at the articulation point of a strut supporting the shield on the base frame side articulated, the other end of which is articulated on the shield-side articulation point of the other strut.
  • the slide can be extendable and retractable by at least one hydraulic piston-cylinder unit.
  • the articulation points of the handlebars on the shield and the base frame are preferably selected such that when the extension sinks in, the shield cannot collide with the conveyor in order to avoid damage to the conveyor. Avoiding a collision is made possible in the design according to the invention, since the strut-in of the shield is precisely determined.
  • the sign can also end at a relatively large distance from the conveyor, so that the sign does not come into dangerous proximity of the conveyor even if the support frame sinks completely.
  • the design according to the invention is such that, at the different height positions of the trestle, the swivel positions of the struts lie between a position inclined downward by approximately 30 ° to the horizontal in the direction of the mounting frame and a horizontal position.
  • This arrangement of the struts has the advantage that when the shield is pivoted at different height positions of the trestle, there is only a relatively small difference in the overhang of the shield facing the old man, and this kinematics allows the slightest corrections by the extendable slide, so that there is the slightest change in the introduction of the forces to be supported. This relatively small change makes it possible to find what is needed with a comparatively short and therefore securely stored slide. At the same time, the forces that are of course much more difficult to control when the slide is fully extended are safely introduced into and absorbed by the strut.
  • the struts articulated on the base frame and on the shield, but supporting the shield can also be designed as hydraulically settable telescopic struts. This has an advantage if the cap is to be adjusted over large height ranges, and it can be adjusted by the hydraulically settable struts in conjunction with the retractable and extendable slide, the throwing end of the shield at all heights in the correct position for the funding, including the most favorable inclination of the shield can be chosen.
  • a hydraulic piston-cylinder unit can be arranged in the base frame, which is connected via a pulling element, for example a chain, to which the conveyor arranged on the old man's side is connected, so large in accordance with the dismantling at the dismantling front when the Removal bridge to the dismantling-side funding is pulled forward, the conveyor arranged on the side of the old man is pulled hydraulically.
  • a pulling element for example a chain
  • the rear cap 1 is supported by four punches 2 against the floor frame 3.
  • a shield 5 is pivoted about a pivot point 4.
  • the shield 5 is held in its pivoted position by rigid struts 6, which are articulated at 7 and at 8 on the base frame.
  • a slide 9 is guided displaceably in the longitudinal direction thereof, through which the shield 5 can be changed in length.
  • the discharge end of this slide 9 is designated 10.
  • 11 is a conveyor arranged on the side of the old man 12. This funding is protected by the shield 5 or the slide 9 so far that the falling coal does not directly hit the conveyor 11 and does not damage this conveyor 11. It is also avoided that the charge of the conveyor 11 is so large that it gets stuck.
  • the shield is shown in dashed lines in its lowest position 5 ', the slide being in position 9' and the struts in position 6 '. 7 'denotes the position of the joint and 4' the articulation point of the shield in this lowest position.
  • a cylinder-piston unit 14, 15 is articulated on the shield at 13, the piston of which is articulated at 16 on the slide 9, so that the position of the slide 9 can be changed hydraulically.
  • the usual conveyor 17 is shown on the front of the trestle, which is connected to the base frame 3 via a piston-cylinder unit 18, 19.
  • the conveyor 11 is connected via a chain 20 to a cylinder-piston unit 21, 22 which is articulated on the floor frame 3 and through which the conveyor 11 can be pulled over the chain 20.

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)
  • Lining And Supports For Tunnels (AREA)
  • Tents Or Canopies (AREA)
EP19800890002 1979-01-23 1980-01-14 Ausbaubock Expired EP0014188B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT48079A AT361430B (de) 1979-01-23 1979-01-23 Ausbaubock
AT480/79 1979-01-23

Publications (2)

Publication Number Publication Date
EP0014188A1 EP0014188A1 (de) 1980-08-06
EP0014188B1 true EP0014188B1 (de) 1982-10-27

Family

ID=3491720

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800890002 Expired EP0014188B1 (de) 1979-01-23 1980-01-14 Ausbaubock

Country Status (10)

Country Link
EP (1) EP0014188B1 (xx)
JP (1) JPS55126700A (xx)
AT (1) AT361430B (xx)
AU (1) AU5480780A (xx)
DE (1) DE3060979D1 (xx)
ES (1) ES487915A1 (xx)
HU (1) HU184230B (xx)
IN (1) IN153639B (xx)
PL (1) PL221456A1 (xx)
YU (1) YU9880A (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4016929C1 (en) * 1990-05-25 1991-09-26 Hermann Hemscheidt Maschinenfabrik Gmbh & Co., 5600 Wuppertal, De Roof support for mine - has canopy with bar hinged to floor skids by extendable props

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1052526C (zh) * 1996-10-03 2000-05-17 中国矿业大学北京研究生部 轻型低位放顶煤液压支架
CN102704975B (zh) * 2012-06-29 2015-08-19 中国矿业大学 一种放顶煤工作面选煤液压支架

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2170295A5 (xx) * 1971-11-18 1973-09-14 Alacchi Georges
GB1477136A (en) * 1973-10-18 1977-06-22 Dowty Mining Equipment Ltd Mine roof support
US4065929A (en) * 1976-03-08 1978-01-03 Atlantic Richfield Company Mine roof support and method in longwall mining of thick mineral seams
GB1557814A (en) * 1976-03-13 1979-12-12 Dowty Mining Equipment Ltd Mine roof support
DE7616114U1 (de) * 1976-05-20 1976-10-14 Bochumer Eisenhuette Heintzmann Gmbh & Co, 4630 Bochum Schildausbaugestell
FR2369414A1 (fr) * 1976-10-29 1978-05-26 Bennes Marrel Pile a bielles de soutirage, pour un soutenement marchant utilisable dans les mines
DE2705460A1 (de) * 1977-02-10 1978-08-17 Hemscheidt Maschf Hermann Gewinnungsverfahren fuer maechtige lagerstaetten
DE2808487C2 (de) * 1978-02-28 1986-10-02 Gewerkschaft Eisenhütte Westfalia GmbH, 4670 Lünen Abbaueinrichtung für den Abbau flözartiger Lagerstätten, insbesondere großer Mächtigkeit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4016929C1 (en) * 1990-05-25 1991-09-26 Hermann Hemscheidt Maschinenfabrik Gmbh & Co., 5600 Wuppertal, De Roof support for mine - has canopy with bar hinged to floor skids by extendable props

Also Published As

Publication number Publication date
AT361430B (de) 1981-03-10
DE3060979D1 (en) 1982-12-02
EP0014188A1 (de) 1980-08-06
YU9880A (en) 1983-04-30
PL221456A1 (xx) 1980-09-22
JPS55126700A (en) 1980-09-30
IN153639B (xx) 1984-08-04
HU184230B (en) 1984-07-30
AU5480780A (en) 1980-07-31
ES487915A1 (es) 1980-10-01
ATA48079A (de) 1980-08-15

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