US3447327A - Movable face support - Google Patents

Movable face support Download PDF

Info

Publication number
US3447327A
US3447327A US610187A US3447327DA US3447327A US 3447327 A US3447327 A US 3447327A US 610187 A US610187 A US 610187A US 3447327D A US3447327D A US 3447327DA US 3447327 A US3447327 A US 3447327A
Authority
US
United States
Prior art keywords
parts
hinge
frame
coupling member
respect
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
US610187A
Other languages
English (en)
Inventor
Freerk J Fontein
Hendrik E Loonen
Frans H Creuels
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.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
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 Stamicarbon BV filed Critical Stamicarbon BV
Application granted granted Critical
Publication of US3447327A publication Critical patent/US3447327A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • E21D23/0052—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
    • E21D23/0409—Aligning or guiding means for the supports or for the constitutive parts of the supports

Definitions

  • MOVABLE FACE SUPPORT Filed Jan. 18, 1967 Sheet 2, of s June 3, 1969 Filed Jan. 18, 1967 F. J. FONTEIN ETAL MOVABLE FACE" SUPPORT Sheet L 015 United States Patent 3,447,327 MOVABLE FACE SUPPORT Freerk J. Fontein, Heerlen, Hendrik E. Loonen, Brunssum, and Frans H. Creuels, Hoensbroek, Netherlands, assignors to Stamicarbon N.V., Heerlen, Netherlands Filed Jan. 18, 1967, Ser. No. 610,187 Claims priority, application Netherlands, Jan. 19, 1966, 6600679; Aug. 6, 1966, 6611110 Int. Cl. E21d 11/00 US. Cl.
  • a face support consisting of two supporting frames which can be alternately advanced parallel to each other by means of an advancing device and a parallel gu de composed of guide rails and guide members cooperating with these rails and which are coupled by means of a bipartile coupling member the parts of which are so connected to each other and to the supporting frames that they can pivot on a shaft which is substantially parallel to the props.
  • the guide rails and the guide members cooperating therewith are so constructed that the guide members can turn with respect to the centerline on the guide rails.
  • the coupling member is sufficiently rigid that a released frame is kept upright by this coupling member, the parts of which are generally rectangular and consist of spring steel strips bent at right angles and provided with hinges, as described in the US. patent application 524,528 which has not yet been laid open to public inspection.
  • the foregoing abstract should not be construed as indicating the principles or scope of the invention disclosed in this document.
  • the guide rails and the guide members cooperating therewiih are constructed so that the guide members can turn with respect to the center line of the guide rails, and coupling means is provided between the pair of supporting frames which permits the usual advancing movements but which is made so rigid that a released frame is kept upright and parallel to the engaged frame irrespective of the seam inclination.
  • the parallel guide may consist of rods of circular cross-section and sleeves cooperating therewith so that the sleeves can turn with respect to the rods.
  • the coupling means comprises strips of spring steel the ends of which are bent at right angles and are pivotally interconnected. by hinges. This makes it possible to use hinges with a large height.
  • the parts of the coupling means may be given the shape of a frame by interconnecting the bent ends of the strips. If the coupling members are deflected, the props will move parallel to themselves. If the frames are moreover advanced by means of a pulling member extending from a point of a face conveyer to the leading sides of the frames, an aligning effect is produced on the frames when these are advanced.
  • a support remains in line with a given 3,447,327 Patented June 3, 1969 point of the conveyer as the coal face advances and will not shift towards the lower end of an inclined face gallery or assume an oblique position with respect to the conveyer.
  • the parts of the coupling member consists of leaf springs, this enables a certain displacement of the supporting frames with respect to each other in a direction normal to the floor, which is necessary to overcome irregularities in the floor when a released frame is advanced.
  • one demand made on the rectangular parts of the coupling member is a high torsional stiffness to present the supporting frames from leaning over
  • another demand is that the said parts should have not too high a bending resistance to enable the frames to be advanced along an uneven floor.
  • the connecting parts between the hinges of the rectangular parts of the coupling member consist of spring steel strips the ends of which are rigidly connected to the hinges, no adequate compromise can be found between the required high torsional stiffness and the desired low bending resistance.
  • each hinge part of each rectangular part of the coupling member is movably connected to the leaf springs of that rectangular part, by means of a a pivot extending normal to the plane of the rectangular part.
  • the springs no longer act as rods clamped on two sides, but as rods clamped on one side, so that, at the same vertical force on one of the ends, the displacement of this end will be reater, whereas the same torsional stiffness is retained.
  • heavier leaf springs can be used, which increases the torsional stiffness.
  • the thickness of the springs can be raised from 8 mm. to 12 mm., as a result of which, in a gallery with an inclination of 30, leaning over of the supporting frames from the vertical to the floor can be reduced from over 4 to at most 20. If the dip is great, so that the vertical projection of the centers of gravity of the props is far outside their bases, some inclination of the frames cannot yet be completely avoided even with this improved construction.
  • the invention furthermore provides a construction which enables the props to 'be reset perpendicularly to the dip after they have been advanced. This has been achieved by causing at least two hinge pins of the rectangular parts of the coupling member to stand at such an angle to each other that during the advance of one frame the props are inclined in the direction opposite to that of the inclination caused by gravity.
  • the angle formed by the shaft of the hinge between the lower frame (as seen in the direction of the dip) and a rectangular part of the coupling member, and on the other hand, the central hinge pin between the two parts of the coupling member, is made to diverge towards the floor, the props of both frames will, after the release and during the advance of the frame, come to be so inclined with regard to the central hinge pin that the inclination owing to gravity is thereby opposed.
  • the desired compensation can also be achieved by making the hinge pin of the upper frame diverge towards the roof with respect to the central pin.
  • a combination of these two constructions can also be used.
  • the desired effect can be ob tained by disposing the hinge pins in such a way that the angle included by the central hinge pin and the hinge pin of the lower frame diverges towards the roof, and/ or the angle included by the central pin and the hinge pin of the upper frame diverges towards the floor.
  • the required angle between the hinge pin can be obtained by placing wedge-shaped spacers between a rectangular part and one or more hinge parts.
  • the angle between the hinge pins can also be obtained by replacing one or both rectangular parts of the coupling element by trapezium-shaped parts. This lends simplicity to the construction, it being possible to alter the angle included by the two pins by changing the length of the base and/or of the upper side. The said angle between the pins can be determined by simply measuring these lengths.
  • FIGURE 1 shows a generally elevational perspective view of a movable face support with coupling member
  • FIGURE 2 is a front elevation view of the rectangular parts of the coupling member according to the invention.
  • FIGURE 3 is a front elevation view similar to FIG- URE 2, but of a simpler construction of the rectangular P FIGURE 4 is a top plan view of the coupling member;
  • FIGURE 5 is a side elevation view of the rectangular parts of the coupling member provided with a wedgeshaped spacer
  • FIGURE 6 is a side elevation view of a trapeziumshaped part of a coupling element
  • FIGURE 7 is a side elevation view of a hinge that can be shifted in height.
  • FIGURE 8 is a side elevation view of the same hinge after such a shift has been made.
  • a movable face support consists of two supporting frames 1 and 1', which each comprise two hydraulic props 2 and 2' and 3 and 3' respectively, with roof plates 4 and 5 and 4' and 5', respectively, and which rest on the floor of the seam by means of base plates 6 and 6', respectively.
  • the dip H in the drawing is supposed to be such that frame 1' is lower than frame 1.
  • the two supporting frames 1 and 1 are pivotally connected by a coupling member consisrg of two rectangular parts, which member is shown in detail in FIGURE 2. In FIGURE 1, the angle included by these parts points away from the face.
  • props 3 and 3 are provided with brackets 10 and 10' respectively, which are designed as hinge parts and to which hinge parts 11 and 11', respectively, are connected by means of hinge pins 12 and 12 extending parallel to the props.
  • the latter parts are provided with leaf springs 13 and 13' respectively which are pivotably connected to hinge parts 14 and 14' that are interconnected by a hinge pin 15.
  • the ends of the springs 13 and 13 are provided with blocks or forks 27 and 28 and 27' and 28' respectively which are rigidly connected to the springs and which are pivotally connected to the above-mentioned hinge parts 14 and 14', respectively, by means of pivot pins 29 and 30 and 29 and 30', respectively.
  • the leaf springs 13 and 13' can advantageously be given the shape of a bracket by connecting the strip ends bent at right angles, as shown in FIGURE 3 by references 13a and v13'a.
  • FIGURE 4 shows a top plan View of the coupling member in which, according to the details of FIGURE 5, spacers 31 and 32 and 31', respectively are placed between the hinge parts 11 and 14 and 11 and 14', respectively, (which in this embodiment are not provided with forks 27 and 28 and 27' and 28) and the springs 13 and 13', respectively, and the hinge par-ts and the spacers are fixed to the springs by means of bolts and washers not shown in the drawing.
  • one of the spacers has been replaced by wedges 32' and 32". This ensures that the hinge pins 12' and 15 will include an angle, which diverges towards the floor, so that, upon advancement of the frame 1 towards A, compensation for the dip H will be obtained. If necessary, additional of the other hinge parts may be provided with similar wedges.
  • FIGURE 6 depicts a simpler design of the coupling member in which one or both rectangular parts have been replaced by trapezium shaped parts, wherein the leaf spring 13'b is shorter than spring 13'c. Also in this case, the hinge parts 11' and 14' include an angle which diverges towards the floor.
  • FIGURE 7 shows a design of one of the hinges in this case the hinge composed of the parts 10' and 12' and 11, with the parts 10' and 11' being movable in height with respect to each other along their pin 12'.
  • the hinge par-ts 10 and 11' are provided with seating elements 33, 33', etc. and 34, 34' etc., respectively, connected by means of the pin 12.
  • FIGURE 8 shows the same parts after their relative position has been changed.
  • the angles included by the hinge pins can be changed depending primarily on the amount of dip of the face gallery to effect a virtually perpendicular positioning of the frames with respect to the dip after the support has been advanced.
  • An added advantage secured by using the apparatus of the invention is that the force exerted on the floor by the lower frame (as seen in the direction of the dip) is reduced, while in the case of the upper frame this force is increased, which results in elimination of the unequal distribution of forces to which a frame resting on a sloping plane is subjected. Consequently, the forces needed for advancing each of the support-ing frames can be distributed more uniformly that in the case that the hinge pins are parallel. Since the greatest force needed for advancing the frames can thus be reduced, a smaller advancing cylinder may be used.
  • the angle included by the two hinge pins may lie in one plane, but the pin may also form an angle in two planes normal to each other, which is the case if the rectangular or trapezium-shaped part of a coupling member is twisted.
  • a movable face support which includes two parallel supporting frames; extensible and rectractable upright prop means; guide means between said supporting frames interconnecting the latter for generally parallel longitudinal movement with respect to each other and for pivotal movement about axes parallel to the direction of said relative longitudinal movement, said guide means comprising a longitudinally extending guide rail carried by each of said supporting frames and a guide member receiving each of said guide rails, the guide rails being longitudinally movable on said guide member; means for etfecting an advancing longitudinal movement of either one of said supporting frames with respect to the other when the prop means of said one Supporting frame is extended; and coupling means connected between said supporting frames permitting said relative longitudinal and pivotal movements for maintaining the one frame in parallel relation with respect to the other frame while preventing said one frame from leaning during such advancing movements; said coupling means comprising a pair of coupling members; each coupling member comprising a generally rectangular spring steel strip part having two generally vertical sides, and a generally lateral top and bottom extending between said sides in a plane; hinge parts, respectively
  • a movable face support which includes two parallel supporting frames; extensible and retractable upright prop means; guide means between said supporting frames interconnecting the latter for generally parallel longitudinal movement with respect to each other and for pivotal movement about axes parallel to the direction of said relative longitudinal movement said guide means comprising a longitudinally extending guide rail carried by each of said supporting frames and a guide member receiving each of said guide rails, the guide rails being longitudinally movable on said guide member; means for effecting an advancing longitudinal movement of either one of said supporting frames with respect to the other when the prop means of said one supporting frame is retracted and the prop means of said other supporting frame is extended; and coupling means connected between said supporting frames permitting said relative longitudinal and pivotal movements for maintaining the one frame in parallel relation with respect to the other frame while preventing said one frame from leaning during such advancing movements; said coupling means com- 6 prising a pair of coupling members; each coupling member comprising a generally rectangular spring steel strip part having two generally vertical sides, and a generally lateral top and bottom extending between
  • hinge parts coupled by a pivot pin each comprise a plurality of interdigital elements which hinge parts are constructed and arranged to be interdigitated with one another at at least two longitudinally relatively displaced positions with respect to the pivot axis thereof.
  • hinge parts coupled by a pivot pin each comprise a plurality of interdigitable elements which hinge parts are constructed and arranged to be interdigitated with one another at at least two longitudinally relatively displaced position with respect to the pivot axis thereof.

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)
  • Preliminary Treatment Of Fibers (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)
  • Hinges (AREA)
US610187A 1966-01-19 1967-01-18 Movable face support Expired - Lifetime US3447327A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6600679A NL6600679A (de) 1966-01-19 1966-01-19
NL6611110A NL6611110A (de) 1966-01-19 1966-08-06

Publications (1)

Publication Number Publication Date
US3447327A true US3447327A (en) 1969-06-03

Family

ID=26643987

Family Applications (1)

Application Number Title Priority Date Filing Date
US610187A Expired - Lifetime US3447327A (en) 1966-01-19 1967-01-18 Movable face support

Country Status (4)

Country Link
US (1) US3447327A (de)
DE (1) DE1271658B (de)
GB (1) GB1167912A (de)
NL (2) NL6600679A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3762172A (en) * 1970-09-11 1973-10-02 Gewerk Eisenhuette Westfalia Mine roof support bar assemblies

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111911212B (zh) * 2020-08-06 2022-10-18 中煤科工开采研究院有限公司 一种端头液压支架组

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3328968A (en) * 1963-08-23 1967-07-04 Hoesch Bergbautechnik Gmbh Mine roof support

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1896510U (de) * 1962-06-08 1964-07-16 Hemscheidt Maschf Hermann Vorrichtung zum bankrechthalten der stempel eines ausbaugespanns bei wechselndem einfallen.
DE1195703B (de) * 1964-09-22 1965-07-01 Hemscheidt Maschf Hermann Loesbare Verstellverbindungen zweier in verschiedenen Ebenen uebereinander angeordneter Federblattschwellen mit den Stempelrohren eines Ausbaurahmens

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3328968A (en) * 1963-08-23 1967-07-04 Hoesch Bergbautechnik Gmbh Mine roof support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3762172A (en) * 1970-09-11 1973-10-02 Gewerk Eisenhuette Westfalia Mine roof support bar assemblies

Also Published As

Publication number Publication date
NL6611110A (de) 1968-02-07
NL6600679A (de) 1967-07-20
DE1271658B (de) 1968-07-04
GB1167912A (en) 1969-10-22

Similar Documents

Publication Publication Date Title
BR112014026097B1 (pt) cobertura de suporte de túnel de autodeslocamento
US3447327A (en) Movable face support
ES398064A1 (es) Perfeccionamientos en pasos de calzada para juntas de dila-tacion en puentes de carretera o construcciones similares.
US3328968A (en) Mine roof support
US4195953A (en) Advance mechanism for a mine roof support assembly
US2801522A (en) Mine arch supports
US4227833A (en) Mineral mining installation
US4269547A (en) Tunnel roof supporting apparatus
US3328966A (en) Movable face support for use in mines
US4186969A (en) Apparatus for controlling the position of a mining machine
US3932998A (en) Mine roof support
US3908389A (en) Mine roof support
US3367117A (en) Mine roof support
US3393522A (en) Face support
US3949562A (en) Apparatus for preventing cave-ins of excavations
CA1239113A (en) Roof mounted conveyor idler frame
DE2213229C2 (de) Anordnung zur waagerechten Abstützung von gasdicht verschweißten Rohrwänden eines Dampferzeugers
CS268830B2 (en) Supporting structure of framing for application in high and medium dips
US3270510A (en) Mine roof and like supports
US3186179A (en) Advanceable mining support arrangement
US3269686A (en) Mine roof and like supports
US3626700A (en) Superstructure in self-advancing roof supports
SU756026A1 (ru) Механизированная крепь сопряжения
GB1564337A (en) Support assemblies for mine workings
SU832003A1 (ru) Секци механизированной крепи