US3524321A - Walking mine roof support - Google Patents

Walking mine roof support Download PDF

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Publication number
US3524321A
US3524321A US806566A US3524321DA US3524321A US 3524321 A US3524321 A US 3524321A US 806566 A US806566 A US 806566A US 3524321D A US3524321D A US 3524321DA US 3524321 A US3524321 A US 3524321A
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US
United States
Prior art keywords
unit
cylinder
units
mine roof
piston means
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
US806566A
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English (en)
Inventor
Wilhelm Wilkenloh
Manfred Koppers
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.)
Rheinstahl Wanheim GmbH
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Rheinstahl Wanheim GmbH
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Filing date
Publication date
Priority claimed from DE19681608288 external-priority patent/DE1608288B1/de
Application filed by Rheinstahl Wanheim GmbH filed Critical Rheinstahl Wanheim GmbH
Application granted granted Critical
Publication of US3524321A publication Critical patent/US3524321A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • E21D23/0082—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor specially adapted for vertical or steep gradient seams

Definitions

  • a walking mine roof support including two support units which can be alternatingly advanced with respect to each other by cylinder and piston means located between and operatively connected to the units and in which means are provided for changing the advancing direction.
  • the present invention relates to a walking mine roof support including two support units arranged laterally spaced from each other comprising a plurality of substantially upright extensible and collapsible props and sole plates and caps respectively connected to the lower and upper ends of the upright props and respectively adapted to be pressed against the sole and the roof of a mine gallery when the props are in the extended position.
  • the walking mine roof support includes further a pair of advancing cylinder and piston means respectively coupled to the units in the region of the caps and the sole plates thereof so that the units may alternatingly advance with respect to each other while the props of one unit are in the collapsed and those of the other unit are in the extended position so that the advancing unit is properly supported by the other unit, the props of which are maintained in the extended position.
  • Such walking mine roof supports which can be advanced without being connected to an element fixed in a mine gallery, for instance conveyor means extending along the mine face, are known in the art and in generally give satisfactory results.
  • the present invention starts from a walking mine roof support above-described in which the two support units are coupled in the region of the caps and sole plates thereof respectively by advancing cylinder and piston means so as to be alternatingly advanceable with respect to each other while the advancing unit is properly supported and guided by the other unit, the props of which are in extended position, and in which the units are also connected in the region of the caps thereof by transverse adjusting cylinder and piston means for correcting the advancing direction.
  • the two support units are also connected in the region of the sole plates thereof by transverse adjusting cylinder and piston means so that the transverse distance of the units may be corrected.
  • the walking mine roof support therefore mainly comprises a pair of support units arranged laterally spaced from each other and each including a plurality of substantially upright extensible and collapsible prop means, sole plate means and cap means respectively connected to the lower and upper ends of said upright prop means and respectively adapted to be pressed against the sole and the roof of a mine gallery when the prop means are in the extended position.
  • the support includes' further a pair of advancing cylinder and piston means located between the units and respectively operatively connected to the latter in the region of the sole plate means and cap means for alternatingly advancing one unit in one direction with respect to the other while the prop means of the one unit are in the collapsed and those of the other unit in the extended position, and two pairs of transverse cylinder and piston means cooperating with said units for changing the distance between said units in direction transverse to said advancing direction and to change the direction of advance of said units, one of said pair of transverse piston and cylinder means being arranged in the region of the cap means and the other pair in the region of the sole plate means of the units.
  • the walking mine roof support according to the present invention it is possible to carry out any desired correction of the advancing direction in the region of the roof as well as in the region of the sole of a mine gallery.
  • the walking mine roof support according to the present invention may be used and advanced in any desired direction regardless of inclinations of the roof and the sole of the mine gallery without requiring special guide rails fixed to the sole of the mine gallery and without requiring attachment of the support units to a structure fixed in the mine gallery, for instance a conveyor.
  • the two pair of transverse cylinder and piston means are preferably articulatedly connected to one of the units and a pair of guide rails are respectively carried by the two pairs of transverse cylinder and piston means, whereas the other unit is connected to the guide rails movable in longitudinal direction of the latter.
  • the other unit is preferably connected to each of the guide rails by a pair of claws which are spaced in longitudinal direction of the respective guide rail from each other and fixedly connected to the other unit. Due to this arrangement an exact parallel guiding of the units is obtained during advance of the units relative to each other.
  • Each of the advancing cylinder and piston means comprises a cyinlder fixed to the other unit and pistons movable in the cylinder and connected to the respective guide rail for moving the latter in longitudinal direction and the arrangement preferably also includes a rigid rod for each guide rail connected to the respective guide rail and to the one unit.
  • the forces exerted by the advancing cylinder and piston means may be trasmitted from the stationary held unit to the moving unit independent from the distance which is adjusted between the two units in the region of the caps and the sole plates thereof by the transverse cylinder and piston means.
  • each of the rigid rods is at opposite ends articulatedly connected to the respective unit and arranged in such a manner to include with the guide rail an acute angle.
  • FIG. 1 is a front view of the walking mine roof support according to the present invention
  • FIG. 1a is an enlarged partly sectioned view of the portion marked A of FIG. 1;
  • FIG. 2 is a cross-section taken along the dash-dotted line shown in FIG. 1 and viewed in the direction of the arrows C;
  • FIG. 3 is a top view of the mine roof support according to the present invention with parts of the middle caps broken away.
  • the walking mine roof support comprises two units A and B which are spaced in transverse direction from each other.
  • Each of the units includes a plurality, for instance four, as shown in the drawing, substantially upright extensible and collapsible props of known construction respectively connected at the upper and lower ends to caps 1 and sole plates 2 which are respectively adapted to be pressed against the roof and the sole of a mine gallery when the props are in extended position, while when the props are in partly collapsed condition, the caps 1 will be disengaged from the roof of the mine gallery.
  • the props are movable between the extended and collapsed position by feeding, in a known manner, pressure fiuid into and out from the interior thereof.
  • the two units A and B are connected to each other in the region of the caps 1 as well as in the region of the sole plates 2 by advancing cylinder and piston means 3 and 4.
  • the cylinder of the cylinder and piston means 3, which are arranged in the region of the sole plates between the two units, is rigidly connected at its closed end by means of a transverse member 5 and at its open end by means of a flange 6 to the unit B.
  • the piston which is reciprocable in the cylinder of the cylinder and piston means 3 is connected at its outer end by a cross head 7 to a guide rail 8 which in turn is guided for movement in longitudinal direction by a pair of claws 9 and 10 which are fixed spaced in longitudinal direction of the guide rail to the cylinder 3.
  • the guide rail 8 may be constituted by an I-beam and one of the lateral flanges thereof is partly encompassed by the guide claws 9 and 10.
  • the guide rail 8 is connected to the unit A by means of a pair of transverse cylinder and piston means 11 and 12 which are respectively articulatedly connected to opposite ends of the unit A.
  • a rigid rod 13 is articulatedly connected at opposite ends respectively to the unit A and to the guide rail 8 to thus transmit the forces exerted by the cylinder and piston means 3 from one to the other unit during relative advance of the units with respect to each other.
  • the cylinder of the second advancing cylinder and piston means 4 is in the region of the caps rigidly connected to the unit B between the transverse cylinder and piston means 14 and 15 which are articulatedly connected to the unit A.
  • the transverse cylinder and piston means 14 and 15 are connected at one end to the unit A.
  • a spacing means 16 is connected in the region of opposite ends thereof to the outer ends of the transverse cylinder and piston means 14 and 15 where as a pair of longitudinally spaced guide claws 18 and 19 (best shown in FIG. 1a) are provided which are connected to the adjacent ends of the piston rods of the transverse cylinder and piston means 14 and 15.
  • the claws 18 and 19 are guided in longitudinal direction by a divided guide rail 21a and 2117 which is rigidly connected to the unit B.
  • the piston rod 17 of the cylinder and piston means 4 is connected at its outer end to the spacing means 16 for moving the latter in longitudinal direction.
  • the unit A and the piston rod 17 are connected to each other by a rigid rod 20 which is articulatedly connected at opposite ends thereof to the piston rod 17 and to the unit A so that the forces exerted by the cylinder and piston means 4 during reciprocation of the piston rod are transmitted between the unit.
  • the cylinder and piston means 11, 12, 14 and 15 are on opposite ends thereof, that is, on the guide rails 8 and 21a and 21b and on the unit A articulatedly connected in such a manner that the transverse cylinder and piston means 11, 12, 14 and 15 do not transmit to the unit A forces parallel to the advancing direction, but the transverse cylinder and piston means 11, 12, 14 and 15 serve only to change the distance between the units A and B.
  • the force necessary for moving the units A and B relative to each other in advancing direction is transmitted through the guide rails 8 and 16 and through the rigid rods 13 and 20 which are at opposite ends articulatedly connected to the respective guide rails and the unit A.
  • the rods 13 and 20 include with the respective guide rail an acute angle and in this arrangement the rods 13 and 20 are subjected only to tension or compression stresses and bending stresses in these rods are substantially avoided.
  • the above-described walking mine roof support may be advanced in the following manner:
  • cylinder and piston means 3 are expanded and the cylinder and piston means 4 collapsed to thus move the guide rails 8 and the guided claws 18, 19 and thereby the unit A connected to the guide rails 8 and the spacing means 16 together with the unit A respectively by the rods 13 and 20 towards the right as viewed in FIGS. 2 and 3.
  • the unit A is during such movement guided exactly parallel by means of the guide rails 8 and 21a and 21b and the guide claws 9, 10, 18 and 19 respectively.
  • the props of the unit A are again expanded after the position of the unit A is adjusted in dependence on the inclination of the mine roof and the mine sole.
  • the caps of the unit B are lowered by partly collapsing the props thereof and the unit B is advanced by means of the advancing cylinder and piston means whereby the unit A serves as stationary support.
  • the advancing direction of the units may be changed when during disengagement of the caps of the unit A from the mine roof the transverse cylinder and piston means 11 and 14 are expanded to an extent different from the expansion of the transverse cylinder and piston means 12 and 15 so that the unit A will be advanced in a direction parallel to the unit B but in a position inclined at an angle with respect to the latter, whereby when after disengagement of the caps of the unit B from the mine roof and operation of the transverse cylinder and piston means to restore parallelism of the units A and B, the advancing direction will be changed.
  • the walking mine roof support it is possible to move the units in longitudinal direction parallel to each other and differences in the elevation of the mine roof and the mine sole will be compensated for so that the two units which are coupled to each other are not subjected to bending stresses.
  • a walking mine roof support comprising, in combination, a pair of support units arranged laterally spaced from each other and each including a plurality of substantially upright extensible and collapsible prop means, sole plate means and cap means respectively connected to the lower and upper ends of said upright prop means and respectively adapted to be pressed against the sole and the roof of a mine gallery when said prop means are in the extended position; a pair of advancing cylinder and piston means located between said units and respectively operatively connected to the latter in the region of the sole plate means and cap means for alternatingly advancing said one unit in the direction of the cylinder and piston means with respect to the other while the prop means of said one unit are in the collapsed and those of the other unit in the extended position; and two pairs of transverse cylinder and piston means cooperating with said units for changing the distance between said units in direction transverse to said advancing direction and to change the direction of advance of said units, one pair of said transverse piston and cylinder means being arranged in the region of said cap means and the other in the region of said sole plate means of
  • siad coupling means comprise for each guide rail a pair of guide claws spaced in longitudinal direction of the respective guide rail from each other and fixedly connected to said other unit.
  • each of said advancing cylinder and piston means comprises a cylinder fixed to said other unit and piston means movable within said cylinder and connected to the respective guide rail for moving the latter in longitudinal direction, and including means connecting each guide rail to said one unit for moving one of said units during movement of said piston means in said cylinder.
  • each of said rigid rods is at opposite ends articulately connected to said one unit and the respective guide rail and includes with the latter an acute angle.

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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)
  • Road Paving Machines (AREA)
  • Earth Drilling (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US806566A 1968-03-12 1969-03-12 Walking mine roof support Expired - Lifetime US3524321A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681608288 DE1608288B1 (de) 1968-03-12 1968-03-12 Ausricht- und Fuehrungseinrichtung fuer aus zwei parallel nebeneinander angordneten Rahmen bestehenden Ausbaugespanne

Publications (1)

Publication Number Publication Date
US3524321A true US3524321A (en) 1970-08-18

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Family Applications (1)

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US806566A Expired - Lifetime US3524321A (en) 1968-03-12 1969-03-12 Walking mine roof support

Country Status (5)

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US (1) US3524321A (en(2012))
BE (1) BE727824A (en(2012))
FR (1) FR2003683A1 (en(2012))
GB (1) GB1248694A (en(2012))
PL (1) PL80887B1 (en(2012))

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800545A (en) * 1970-08-13 1974-04-02 Groetschel Karl Maria Roof support for use in mine workings
US4010618A (en) * 1974-01-19 1977-03-08 Dowty Mining Equipment Limited Mine roof support
US4094153A (en) * 1976-10-15 1978-06-13 Bochumer Eisenhutte Heintzmann Gmbh & Co. Breast roof support system for longwall mining
US4293248A (en) * 1978-02-23 1981-10-06 Centralny Osrodek Projektowo-Konstrukcyjny Maszyn Gorniczych "Komag" Walking roof support
US4401399A (en) * 1980-06-28 1983-08-30 Gewerkschaft Eisenhutte Westfalia Two part mine roof support unit
US20200131906A1 (en) * 2018-10-29 2020-04-30 Joy Global Underground Mining Llc Roof support connector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2165574B (en) * 1984-10-13 1987-11-18 Dowty Hucknall Limited Mine roof supports with anti toppling device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1364412A (fr) * 1963-07-24 1964-06-19 Gewerk Eisenhuette Westfalia Soutènement hydraulique mobile utilisable au fond dans les mines
US3362169A (en) * 1963-12-21 1968-01-09 Karl Maria Groetschel Roof supporting systems for mine workings
US3448584A (en) * 1967-02-16 1969-06-10 Bergwerksverband Gmbh Hydraulic casing units for mine workings

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1364412A (fr) * 1963-07-24 1964-06-19 Gewerk Eisenhuette Westfalia Soutènement hydraulique mobile utilisable au fond dans les mines
US3362169A (en) * 1963-12-21 1968-01-09 Karl Maria Groetschel Roof supporting systems for mine workings
US3448584A (en) * 1967-02-16 1969-06-10 Bergwerksverband Gmbh Hydraulic casing units for mine workings

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800545A (en) * 1970-08-13 1974-04-02 Groetschel Karl Maria Roof support for use in mine workings
US4010618A (en) * 1974-01-19 1977-03-08 Dowty Mining Equipment Limited Mine roof support
US4094153A (en) * 1976-10-15 1978-06-13 Bochumer Eisenhutte Heintzmann Gmbh & Co. Breast roof support system for longwall mining
US4293248A (en) * 1978-02-23 1981-10-06 Centralny Osrodek Projektowo-Konstrukcyjny Maszyn Gorniczych "Komag" Walking roof support
US4401399A (en) * 1980-06-28 1983-08-30 Gewerkschaft Eisenhutte Westfalia Two part mine roof support unit
US20200131906A1 (en) * 2018-10-29 2020-04-30 Joy Global Underground Mining Llc Roof support connector
WO2020092265A1 (en) * 2018-10-29 2020-05-07 Joy Global Underground Mining Llc Roof support connector
US10914170B2 (en) 2018-10-29 2021-02-09 Joy Global Underground Mining Llc Roof support connector
CN113195870A (zh) * 2018-10-29 2021-07-30 久益环球地下采矿有限责任公司 顶板支架连接器
GB2593310A (en) * 2018-10-29 2021-09-22 Joy Global Underground Mining Llc Roof support connector
GB2593310B (en) * 2018-10-29 2023-02-08 Joy Global Underground Mining Llc Roof support connector
CN113195870B (zh) * 2018-10-29 2024-04-23 久益环球地下采矿有限责任公司 顶板支架连接器

Also Published As

Publication number Publication date
FR2003683A1 (en(2012)) 1969-11-14
PL80887B1 (en(2012)) 1975-08-30
BE727824A (en(2012)) 1969-07-16
GB1248694A (en) 1971-10-06

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