US3367117A - Mine roof support - Google Patents

Mine roof support Download PDF

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Publication number
US3367117A
US3367117A US429779A US42977965A US3367117A US 3367117 A US3367117 A US 3367117A US 429779 A US429779 A US 429779A US 42977965 A US42977965 A US 42977965A US 3367117 A US3367117 A US 3367117A
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US
United States
Prior art keywords
props
mine
mine roof
arms
roof support
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 - Lifetime
Application number
US429779A
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English (en)
Inventor
Weirich Walter
Watermann Willy
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.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
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 Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
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Publication of US3367117A publication Critical patent/US3367117A/en
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Expired - Lifetime 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
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof 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
    • E21D23/0052—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
    • 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

Definitions

  • the structure includes opposed pairs of telescopable props between which a horizontally extending power cylinder is positioned.
  • the power cylinder includes telescopable members provided with oppositely extending brackets which, in turn, include arms that cooperate with the telescopable props. By reason of the brackets and arms and the manner in which they are connected to the support structure, the telescopable props may be folded over the power cylinder for transport.
  • the present invention relates to improvements in mining apparatus and, more particularly, to means for su-pporting mine roofs during the course of underground excavating.
  • a walking mine roof support which comprises elongated horizontal advancing means arranged to move the support progressively stepwise toward the mine face in an underground excavation, a pair of extensible and contractible leading pit props which are located at the opposite sides of the advancing means, a pair of extensible and contractible trailing pit props which also are located at the opposite sides of the advancing means, a floor-engaging sole plate articulately connected to the lower end portion of each prop, and a novel articulate connection between the props, sole plates and advancing means.
  • connection comprises two laterally extending hinges which are connected to the advancing means and include links or levers adapted to pivot about the axes which are parallel with the longitudinal extension of the advancing means, and such links carry detachable resilient elements in the form of suitably configurated leaf springs which are assembled into two groups of packages, one at each side of the advancing means and each including an upper package and a lower package.
  • the packages have forwardly and rearwardly extending arms and the arms of each upper package are articulately and detachably connected to median portions of the props at a level above the respective hinge.
  • the arms of the lower packages are articulately and detachably connected with such sole plates which are located at the same side of the advancing means.
  • the sole plates and the packages are free to move relative to each other as well as relatively to the advancing means.
  • the props are free to move not only with reference to the advancing means but also with reference to each other as well as with reference to the sole plates whereby their roof bars can yield to unexpected obstructions when the mine roof support is caused to advance toward the mine face,
  • the mine support props For the purpose of counteracting the inclination of the mine support props in a dip, it already has been suggested that they can be supported from an erected frame associated with the same truss in a definite position with regard to the skid by means of at least one supporting spring secured to the frame. Preferably, in such an arrangement the props are given a bias counteracting the dip.
  • the support truss has two parallel upright alternately advancing prop means between which is disposed the longitudinal advancing means which, in turn, includes guide means, one located inside of the other, that transmit the twisting forces without hindrance.
  • the outer and inner guide means are detachably connected by hinge means to respective ones of the prop means.
  • the connection between the prop means and the guide means is made detachable by using a linkage arrangement which, in further explanation of the invention, is made positively or tensionally adjustable by means of an eccentric bolt and a key.
  • This construction makes it possible for both prop means to accommodate for local characteristics, particularly the degree and the direction or stretch of the dip, and it lends to the props or to the prop anchorages, a corresponding preferably biased, position with respect to the dip.
  • the proposed steps have the further advantage that the trusses, after having been taken apart at the hinged connections, very simply can be collapsed, with or without the prop, for transporting or storing as spare parts; or by uncoupling all connections, it can be reduced to a convenient group of small parts.
  • a known walking support frame has the feature that the support frames can be collapsed, for transporting, down to the piston rod of the feed cylinder located therebetween.
  • the forces in an advantageous manner can be transmitted by the proposed hinged coupling located between the guide means and the frame and by the adjustability of the positively connected hinge coupling.
  • the truss accommodates each and every dip and yet in a simple manner can be folded up or separated into a number of individual components.
  • the proposed embodiment assures a simple interchangeability of worn out or damaged parts and, because of the tensioning means used, offers a compensation for working tolerances or for the amount of Wear.
  • no great demand is placed upon manufacturing precision; and, because of the sturdy, simple and reliable embodiment, the rough underground operations are largely provided for.
  • the principal object of the invention is to provide a linkage means which will permit opposed pairs of prop means to be folded crosswise over a longitudinally extending means disposed therebetween into an inoperative position.
  • Another object of the invention is to provide an eccentric pin means which cooperates with a wedge means to hold the truss components together during operation as well as to facilitate the separation thereof into individual components.
  • FIG. 1 is a front elevational view of the support truss of the present invention
  • FIG. 2 is a partial plan view showing the linkage means extending from opposite sides of the longitudinally disposed advancing means
  • FIG. 3 is a partial front elevational and sectional view of the linkage means taken on line HI-III of FIG. 2;
  • FIG. 4 shows the linkage means folded for storage or shipment.
  • FIG. 1 there is illustrated an apparatus which is known as a mobile or walking mine roof support which comprises a pair of telescopable hydraulic pit props 2 and 3, each of which is adapted to support at its upper extremity a cap 2a and 3a, respectively, which may be raised and lowered relative to the roof of the mine as the apparatus is caused to progress through the mine.
  • a mobile or walking mine roof support which comprises a pair of telescopable hydraulic pit props 2 and 3, each of which is adapted to support at its upper extremity a cap 2a and 3a, respectively, which may be raised and lowered relative to the roof of the mine as the apparatus is caused to progress through the mine.
  • each of the aforesaid props are provided with sole plates which are associated therewith by means of suitable ball and socket joints thereby permitting the props 2 and 3 to slide along an uneven mine floor F, all of which will be readily understood from an examination of the aforementioned earlier application Ser. No. 391,149, filed Aug. 21, 1964.
  • a longitudinally extending power means 1 adapted for advancing the props 2 and 3 relative to one another through the mine, said means including longitudinally slidable telescopable elements 1a and 1b, each of which is provided with complemental IU-sh'aped brackets 4a and 4b, respectively, the end portions of each of which being provided with aligned apertures 1010 into which are inserted eccentric pins 8 that include. lever means 8a that facilitate operation of the apparatus as will be understood as the description progresses.
  • arms 5 and 6 are pivotally mounted relative to the brackets 4a and 411, respectively, by means of the pins 8 which are projected through means defining elongated openings 10a in the opposed depending flanges carried by said arms.
  • a transversely extending stop means 11 is affixed between the depending flanges carried at the inner end of this arm (both arms 5 and 6 are constructed in this manner) and is thereby adapted to receive a Wedge-shaped headed key means 9 which is inserted through a perforation provided in the top wall of the pivotal arm and is brought into engagement with said stop means and the eccentric pin 8.
  • the pivotal arms 5 and 6 ' are firmly secured to position the associated props 2 and 3 in an upright position and for use on a relatively flat surface.
  • a further locking of the pivotal arms 5 and 6 to prevent movement out of a position such as exemplified in FIG. 3 may be accomplished by inserting a suplemental key means (not shown) between the rear face of stop means 11 and the confronting wall of bracket 13.
  • a suplemental key means (not shown) between the rear face of stop means 11 and the confronting wall of bracket 13.
  • the aforementioned surfaces may also be complementally formed into various configurations so that when they are brought into juxtaposed relation a rigid assembly is provided when the key 9 is introduced between the stop means 11 and the eccentric pin 8.
  • FIG. 4 there is shown a collapsible or foldable arrangernent of the arms 5 and 6 which is easily achievable through the relative simplicity of construction of this apparatus and whereby storage or transportation may be accomplished by lowering opposed pairs of posts 2 and 3 crosswise over the longitudinally extending means 1 thereby considerably reducing the area thereof.
  • the eccentric pin 8 is removed from perforation 10, whereupon the arms are swung upwardly until they are 'brought into contact with the inner wall 13 of the bracket and thereafter the pin 8 is reinserted into the aperture provided, but from the opposite side, thereby securing the arms in an inoperative position as previously explained.
  • the resulting triangular form permits the room neded for storage or transportation to be very considerably reduced.
  • the trusses even when the props and frames remain connected together, do not exceed the width of whatever conveys the truss.
  • a mobile mine roof support including opposed pairs of prop means and telescopable longitudinally extending power means interposed therebetween and associated therewith for progressive alternate advancement thereof
  • the combination comprising, longitudinally reciprocable transversely disposed bracket means carried by said telescopable longitudinally extending power means and arm means pivotally supported by said bracket means associated with means extending between each pair of prop means whereby said opposed pairs of prop means may be folded crosswise over said longitudinally extending means into an inoperative position.
  • eccentric pin means includes a lever means for actuation thereof.
  • wedge means are installed in means defining an opening in said pivotal arm means for adjustment thereof relative to said bracket means.
  • bracket has a U-shaped configuration including a surface area complemental to a transversely extending means carried by said pivotal arm means.

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  • 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)
  • Tents Or Canopies (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Body Structure For Vehicles (AREA)
US429779A 1964-02-04 1965-02-02 Mine roof support Expired - Lifetime US3367117A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH0051579 1964-02-04

Publications (1)

Publication Number Publication Date
US3367117A true US3367117A (en) 1968-02-06

Family

ID=7157744

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Application Number Title Priority Date Filing Date
US429779A Expired - Lifetime US3367117A (en) 1964-02-04 1965-02-02 Mine roof support

Country Status (5)

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US (1) US3367117A (de)
BE (1) BE656723A (de)
DE (1) DE1252159B (de)
GB (1) GB1036710A (de)
NL (1) NL6500566A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435620A (en) * 1965-09-20 1969-04-01 Gewerk Eisenhuette Westfalia Walking mine roof support
DE2622887A1 (de) * 1976-05-21 1977-11-24 Bochumer Eisen Heintzmann Schildausbaugestell
US4348138A (en) * 1979-07-06 1982-09-07 Charbonnages De France Sliding supporting gallery
WO2006130918A1 (en) * 2005-06-10 2006-12-14 William John Sutton Roof support for mines
CN116753008A (zh) * 2023-08-11 2023-09-15 北京科技大学 一种大断面巷道柔性支护设备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB896098A (en) * 1958-04-03 1962-05-09 Gewerk Eisenhuette Westfalia Advancing roof support frame assembly for mining operations
DE1178813B (de) * 1963-08-23 1964-10-01 Hoesch Bergbautechnik G M B H Elastische Aufhaengung zur Verbindung von Ausbaurahmen
US3174289A (en) * 1960-02-08 1965-03-23 Gewerk Eisenhuette Westfalia Travelling hydraulic development frame for mining operations

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB896098A (en) * 1958-04-03 1962-05-09 Gewerk Eisenhuette Westfalia Advancing roof support frame assembly for mining operations
US3174289A (en) * 1960-02-08 1965-03-23 Gewerk Eisenhuette Westfalia Travelling hydraulic development frame for mining operations
DE1178813B (de) * 1963-08-23 1964-10-01 Hoesch Bergbautechnik G M B H Elastische Aufhaengung zur Verbindung von Ausbaurahmen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435620A (en) * 1965-09-20 1969-04-01 Gewerk Eisenhuette Westfalia Walking mine roof support
DE2622887A1 (de) * 1976-05-21 1977-11-24 Bochumer Eisen Heintzmann Schildausbaugestell
US4348138A (en) * 1979-07-06 1982-09-07 Charbonnages De France Sliding supporting gallery
WO2006130918A1 (en) * 2005-06-10 2006-12-14 William John Sutton Roof support for mines
CN116753008A (zh) * 2023-08-11 2023-09-15 北京科技大学 一种大断面巷道柔性支护设备
CN116753008B (zh) * 2023-08-11 2023-10-27 北京科技大学 一种大断面巷道柔性支护设备

Also Published As

Publication number Publication date
NL6500566A (de) 1965-08-05
DE1252159B (de) 1967-10-19
GB1036710A (en) 1966-07-20
BE656723A (de) 1965-04-01

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