EP0014188A1 - Cale - Google Patents

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Publication number
EP0014188A1
EP0014188A1 EP19800890002 EP80890002A EP0014188A1 EP 0014188 A1 EP0014188 A1 EP 0014188A1 EP 19800890002 EP19800890002 EP 19800890002 EP 80890002 A EP80890002 A EP 80890002A EP 0014188 A1 EP0014188 A1 EP 0014188A1
Authority
EP
European Patent Office
Prior art keywords
shield
struts
stand according
frame
extension
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.)
Granted
Application number
EP19800890002
Other languages
German (de)
English (en)
Other versions
EP0014188B1 (fr
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3491720&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0014188(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0014188A1 publication Critical patent/EP0014188A1/fr
Application granted granted Critical
Publication of EP0014188B1 publication Critical patent/EP0014188B1/fr
Expired legal-status Critical Current

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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

  • 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. If the height of the seam now exceeds the height of the usual expansion frame, a layer of coal remains above the expansion frame, the so-called hanging coal, which is also to be extracted from the high field.
  • a conveyor is also arranged on the side of the old man and a sign is pivotably articulated on the rear cap, which guides the extracted coal to this conveyor arranged on the side of the old man.
  • the invention now relates to such a trestle, in which the rear cap is supported by a stamp against a floor frame, and on the rear cap a pivot is articulated, which is held by struts in its pivoted position, for a case of extraction, in which the hanging coal is extracted and is directed across the sign to a conveyor located on the old man's side.
  • the hanging coal which either breaks down by itself or has to be loosened by shooting, can accumulate in large pieces and you have to be there Protect the conveyor from the direct impact of the coal, otherwise the conveyor can be damaged or get stuck if the amount of coal 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.
  • the invention now aims to provide a trestle for the above-mentioned extraction case, which, in addition to being highly stable, should also be distinguished by the fact that the coal can be removed safely without overloading the conveyor.
  • the training according to the invention consists essentially in the fact that the shield is supported in its pivoted position by struts against the floor frame, which are pivotably articulated both on the shield and on the floor frame and that at least one slide which can be extended in the direction of the shield is guided in the shield is by 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 largely as a supporting force for the roof can be exploited 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 with respect 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 falling 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.
  • the slide can be extended and retracted 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 support frame, the pivoting 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 with one comparatively short and therefore safe to store slider to find enough.
  • the slide which is extended at the same time, is naturally safely introduced into the strut and absorbed by it.
  • 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 floor frame, which is connected via a traction element, for example a chain, to the conveyor arranged on the side of the old man, so that, in accordance with the dismantling at the dismantling front, when the trestles to the dismantling-side funding, the conveyor arranged on the side of the old man is hydraulically pulled up.
  • a traction 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 frame 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 slider 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.
  • Fig. 2 one half of the adjacent trestle is also shown.

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)
  • Lining And Supports For Tunnels (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Tents Or Canopies (AREA)
EP19800890002 1979-01-23 1980-01-14 Cale Expired EP0014188B1 (fr)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=3491720

Family Applications (1)

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

Country Status (10)

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

Cited By (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
CN102704975A (zh) * 2012-06-29 2012-10-03 中国矿业大学 一种放顶煤工作面选煤液压支架

Families Citing this family (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

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2170295A5 (fr) * 1971-11-18 1973-09-14 Alacchi Georges
DE2448367A1 (de) * 1973-10-18 1975-04-24 Dowty Mining Equipment Ltd Grubendeckenstuetze
DE7616114U1 (de) * 1976-05-20 1976-10-14 Bochumer Eisenhuette Heintzmann Gmbh & Co, 4630 Bochum Schildausbaugestell
DE2710718A1 (de) * 1976-03-13 1977-09-15 Dowty Mining Equipment Ltd Schildausbaugestell
US4065929A (en) * 1976-03-08 1978-01-03 Atlantic Richfield Company Mine roof support and method in longwall mining of thick mineral seams
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
DE2808487A1 (de) * 1978-02-28 1979-09-06 Gewerk Eisenhuette Westfalia Abbaueinrichtung fuer den abbau floezartiger lagerstaetten, insbesondere grosser maechtigkeit

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2170295A5 (fr) * 1971-11-18 1973-09-14 Alacchi Georges
DE2448367A1 (de) * 1973-10-18 1975-04-24 Dowty Mining Equipment Ltd Grubendeckenstuetze
US4065929A (en) * 1976-03-08 1978-01-03 Atlantic Richfield Company Mine roof support and method in longwall mining of thick mineral seams
DE2710718A1 (de) * 1976-03-13 1977-09-15 Dowty Mining Equipment Ltd Schildausbaugestell
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
DE2808487A1 (de) * 1978-02-28 1979-09-06 Gewerk Eisenhuette Westfalia Abbaueinrichtung fuer den abbau floezartiger lagerstaetten, insbesondere grosser maechtigkeit

Cited By (3)

* 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
CN102704975A (zh) * 2012-06-29 2012-10-03 中国矿业大学 一种放顶煤工作面选煤液压支架
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

Also Published As

Publication number Publication date
EP0014188B1 (fr) 1982-10-27
PL221456A1 (fr) 1980-09-22
JPS55126700A (en) 1980-09-30
DE3060979D1 (en) 1982-12-02
ES487915A1 (es) 1980-10-01
HU184230B (en) 1984-07-30
IN153639B (fr) 1984-08-04
AU5480780A (en) 1980-07-31
YU9880A (en) 1983-04-30
AT361430B (de) 1981-03-10
ATA48079A (de) 1980-08-15

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