US3830544A - Anchorage for conveyor guiding longwall planer and method - Google Patents

Anchorage for conveyor guiding longwall planer and method Download PDF

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Publication number
US3830544A
US3830544A US00316644A US31664472A US3830544A US 3830544 A US3830544 A US 3830544A US 00316644 A US00316644 A US 00316644A US 31664472 A US31664472 A US 31664472A US 3830544 A US3830544 A US 3830544A
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United States
Prior art keywords
guide
conveyor
bolts
shoes
anchor
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Expired - Lifetime
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US00316644A
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English (en)
Inventor
J Wilson
J Nelson
D Shield
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Underground Mining Machinery Ltd
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Underground Mining Machinery Ltd
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Publication date
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Publication of US3830544A publication Critical patent/US3830544A/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
    • E21C29/04—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains
    • E21C29/14—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains by haulage cable or chain pulling the machine along the working face
    • E21C29/16—Winches or other means for pulling cable or chain
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/08—Guiding the machine
    • E21C35/12—Guiding the machine along a conveyor for the cut material
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F13/00—Transport specially adapted to underground conditions
    • E21F13/10—Anchorings for conveyors

Definitions

  • the face conveyor drive frame which may also incorporate the drive system for a coal plough, is held in place by a chock type anchorage.
  • This conventional anchorage is, however, unsuitable in certain circumstances particularly where poor roof conditions make it impossible to set secure staking chocks or where the large plan area of the conventional anchorage precludes the setting of additional roadway supports when they are made necessary by deteriorating roadway conditions.
  • an anchorage which comprises a guide and anchor beam for a part of the conveyor drive frame, or a part connected to the drive frame, the beam being held in place by bolts or other like elongate elements extending into the floor.
  • the bolts extend at an angle to the horizontal, being advantageously directed away from the conveyor at an angle between 30 and 45, so as to ensure that they are held in tension.
  • the beam may be segmented, being constituted by a plurality of guide rail sections which are laid down ahead of the drive frame as the conveyor is moved to follow the face, and are removed for re-use after the said part has moved past them.
  • the guide rail sections may be detachably connected to shoes which are bolted to the floor and are also removed after removal of the guide rail sections.
  • a guide rail section and the associated shoe or shoes may be integral one with the other and hence removable in one piece.
  • the bolts are held in place within the drillings in the floor by means of a synthetic resin.
  • the bolts are in the form of stud-bolts so that the shoes can be removed from the stud-bolts after the nuts holding the shoes down have been removed.
  • a disadvantage of this embodiment is that the shoes (which may be very heavy if integral with the guide rail sections) need to be lifted away from the floor at an angle equal to that at which the bolts enter the floor in order to disconnect them from the bolts.
  • FIG. 1 is a schematic side elevation of a face conveyor showing a first embodiment of anchorage according to the invention
  • FIG. 2 is a plan view of the conveyor and anchorage shown in FIG. 1,
  • FIG. 3 is a view, taken from the same direction as FIG. 1, but to a larger scale. showing one of the shoes and the associated guide rail,
  • FIG. 4 is a view taken in the direction of arrow IV in FIG. 3,
  • FIG. 6 is a perspective view taken in the direction of arrow VI in FIG. 5, showing the anchorage with the face conveyor disconnected,
  • FIG. 7 is a schematic side elevation of a third embodiment
  • a face conveyor C extends along the coal face F and guides and supports a coal plough not shown in the drawing.
  • a drive frame 1 supports the drive systems for the conveyor and plough.
  • the drive frame needs to be capable of being anchored in a roadway R while the plough is operating and of being moved along the roadway in order to keep pace with the conveyor C as it follows the face F.
  • the drive frame is alternately anchored to and guided for movement'along a guide and anchor beam including a segmented guide rail 5 which is held in place by shoes 6.
  • the shoes are secured to the floor of the roadway by bolts 7 which extend into the floor of the roadway and pass under the rib side thereof at an angle of between 30 and 45 to the horizontal.
  • the drive frame is connected to the anchorage assembly by components which include an articulated linkage 2 connected to one arm of each of two bell crank levers 31.
  • the other arm of each of the levers 31 is connected to a respective one of two hydraulic rams 32 which, like the levers 31, is pivoted to a sliding beam 3 resting on the floor of the roadway. Operation of the rams so as to retract the pistons pivots the bell crank levers to tension the face conveyor.
  • the rail 5 is assembled from a plurality of sections 52 and each of the shoes 6 supports and locates the meeting ends of two adjacent sections.
  • Each of the sections 52 defines a groove 51.
  • Two guide ways 53 give the mouth of the groove a reduced height so that the head of each of two T-rails 4 is retained in the groove and is guided for movement therealong.
  • Each of two T-rails 4 is equipped with sliders 41 which have faces complementary to those of the guide ways.
  • Each of the T-rails 4 is articulated to a respective end of the beam 3 and can be anchored in place by being bolted to the rail 5 using the holes 53 in the rail sections 52 for this purpose.
  • the cylinder 8 of a hydraulic ram is pivoted to the right-hand-end T-rail (as viewed in FIG. 2), while its piston rod is connected to a sliding trolley 9 which, like the T-rails, has a part which is retained in the groove 51 and can slide therealong or be bolted in place.
  • the shoes 6 each have a base plate 61 resting on the ground through the intermediary of feet 62.
  • the base plate supports a block 63 which has a bore directed downwards at between 30 and 45 to the hori- Zontal.
  • an upstanding plate 64 which is cut-away to allow the T-rail to pass from the groove of one rail section 52 to the next, and which has a hole 65 to enable a pin to pass through and connect the plate to the end of a respective rail section which has downwardly projecting end plates 54 for this purpose.
  • a bolt 7 passes through the bore in the block 63 of each shoe into the floor wherein it is held rigidly in place by resin bonding.
  • the bolt may be a conventional stud bolt, but preferably is made in several parts so that no obstruction remains above floor level after release.
  • the bolt may have a short end part 71 which screws into an internally threaded head or removable sleeve, 72, on a shank 73 which is irremovable once it is bonded in place in the floor.
  • the shoes may be unbolted from the floor and transferred to the inbye side for re-use.
  • the bolt, or that part of the bolt which is resin bonded in place in the floor, is abandoned. In this way, it is possible to present a continuous beam on the inbye side of the face using but a limited number of rail sections and shoes.
  • FIGS. 5 and 6 in which where possible the same reference numerals as are used in FIGS. 1 and 2 are used to identify the same parts, a more compact construction is achieved by arranging for the sliding beam 3 to be supported and slidable upon the rail 5, on which the beam 3 is retained by guide ways 53 which extend along the sides of the rail and co-operate with guides 41 on the sides of the beam.
  • the tensioning cylinders 32 accommodated in a housing 33 act directly on the linkage 2, thereby making possible the omission of the bell crank levers.
  • the housing 32 may be supported on a narrow beam 34 extending parallel to the rod 5.
  • the shifting cylinder 8 is also located above the guide rail and the sliding trolley 9 slides upon the guide rail and is secured to it when the drive frame is to be advanced. Because the sections 52 of the rail 5 support the sliding beam and the sliding trolley, these sections need to be of more robust construction than in the embodiment of FIGS. 1 to 4 and they are integral with the shoes which receive the bolts 7. In a particular embodiment, the sections have a length of about 6 feet.
  • the operation of the embodiment shown in FIGS. 5 and 6 is the same as that described above in connection with the embodiment of FIGS. 1 and 2, except that the rail and shoe sections must be transported from the outbye side to the inbye side in one piece.
  • the drive frame 1 has an aperture through which the segmented guide rail 5 passes, the guide rail being secured in place by bolts 7.
  • the rail 5 is of the same type as that shown in FIGS. 5 and 6 and the procedure for laying-down, taking-up, and transporting the combined rail and shoe sections is exactly the same as previously described.
  • the ways 53 with which the guide rail 5 is provided serve to trap the drive frame to the rail.
  • a conventional stage loader assembly 5 extends parallel to the rail 5 and receives mineral from the face conveyor C in the usual way.
  • a T-rail or tube guide is provided along the side of the stage loader S in known manner to ensure a slidable connection between the latter and the drive frame.
  • FIG. 8 shows how the invention may be utilised in a case in which no advance heading is carried.
  • a long line pan L in the form of a rigid beam forms the inbye end of the stage loader S, and is articulated to the drive frame at 2, in a non-sliding manner.
  • a tube or T-sectioned guide 5 is attached permanently to the side of the line pan L and is held in place by shoes 6, bolted to the floor as described above.
  • the part which cooperates with and slides along the rail in each embodiment is arranged to negotiate errors in alignment between two adjacent rail sections of a suitable angle, for example, up to 5, so that the system provided by the invention is particularly suitable in a roadway which negotiates rolls and undulations.
  • the invention also has the advantages that it may be used when poor roof conditions prevail in the roadway particularly as, by virtue of its small plan area, the anchorage allows additional roadway supports 10 (FIG. 1) to be set when necessary.
  • the invention can be used in roadways having either a square section or an arch section, and its compact design allows the conveyor/- plough drive frame to be positioned in the roadway itself, thereby reducing and possibly eliminating the need for a plough stable hole.
  • a guide beam comprising a plurality of segments, at least one shoe associated with each segment, at least one bolt passing through the shoe into the floor of a mine working, an anchorage for a mine conveyor, said anchorage including two independently movable parts guided for movement longitudinally of the beam, means for fixedly securing one part to said beam, extensible means interconnecting said two parts and operable to displace an unsecured part along said beam relative to said secured part, and means on one of said parts for tensioning said conveyor.
  • a method of guiding progressively moving mining machinery comprising:
  • a method of guiding progressively moving mining equipment comprising:
  • An underground mining installation comprising: a drive frame for a mine face conveyor, a guide and anchor beam extending transversely of the conveyor, said beam having a forward end facing in the direction in which the conveyor is advanced periodically during working and a rearward end, the beam having a length smaller than the distance to be transversed by the conveyor during working, a first structure supported on the guide and anchor beam for movement there along, means including first piston and cylinder means interconnecting the drive frame and first structure for tensioning the conveyor, a second structure located to one side of the first structure and being likewise supported on the guide and anchor beam for movement there along, and second piston and cylinder means interconnecting the first and second structures, said guide and anchor beam being constituted by a plurality of segments which are arranged end to end and are bolted to the mine floor, said segments and said first and second structures being provided with means whereby either said first structure or second structure may be anchored to said guide and anchor beam against movement longitudinally of the beam thereby to permit the unanchored one of said structures to be displaced relative to the other by
  • An underground mining installation comprising: a drive frame for a mine face conveyor, a guide and anchor beam extending tranversely of the conveyor, said beam having a forward end facing in the direction in which the conveyor is advanced periodically during working and a rearward end, the beam having a length smaller than the distance to be traversed by the conveyor during working, a first structure supported on the floor and having a part engaging with the beam for movement there along, means including first piston and cylinder means interconnecting the drive frame and first structure for tensioning the conveyor, a second structure located to one side of the first structure and likewise having a part engaging with the beam for movement there along said second piston and cylinder means interconnecting the first and second structure, said guide and anchor beam being constituted by a plurality of segments which are arranged end to end and are bolted to the mine floor, said segments and said parts of said first and second structures being provided with means whereby either of said parts and hence the structure in question may be anchored in position to said guide and anchor beam thereby to permit the unanchoredone of said structures to be
  • the first structure is in the form of an elongate beam and the said part thereof is a T-rail carried by said elongate beam;
  • the second structure is a sliding trolley and the said part thereof is a T-rail, the T-rails having heads which fit within a channel defined by the guide and anchor beam, the second piston and cylinder means interconnecting the sliding trolley and the T-rail of the elongate beam.
  • a drive frame for a face conveyor a line pan articulated to said drive frame and extending transversely thereof, an elongate guide secured to a side of said line pan; a plurality of shoes bolted to the mine floor and co-operating slidingly with said elongate guide, said shoes securing said line pan to apply a force anchoring said drive frame in position ane being releasable from their bolts and transportable from one end to the other of said elongate guide to permit the advance of the overall assembly.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Bridges Or Land Bridges (AREA)
  • Framework For Endless Conveyors (AREA)
US00316644A 1971-12-21 1972-12-19 Anchorage for conveyor guiding longwall planer and method Expired - Lifetime US3830544A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5932771A GB1408270A (en) 1971-12-21 1971-12-21 Mine conveyor and an anchorage therefor

Publications (1)

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US3830544A true US3830544A (en) 1974-08-20

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US (1) US3830544A (enExample)
DE (2) DE2262029C3 (enExample)
FR (1) FR2164725B3 (enExample)
GB (1) GB1408270A (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110248092A1 (en) * 2010-04-09 2011-10-13 Yves Nelson Foldable or detachable feed rail for rock drill
WO2011130688A3 (en) * 2010-04-16 2012-01-26 Joy Mm Delaware Inc. Advancing longwall system for surface mining

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2704495C3 (de) * 1977-02-03 1981-03-26 Gewerkschaft Eisenhütte Westfalia GmbH, 4670 Lünen Abspanneinrichtung für eine Förder- und/oder Gewinnungsanlage im Bergbau

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110248092A1 (en) * 2010-04-09 2011-10-13 Yves Nelson Foldable or detachable feed rail for rock drill
US8807448B2 (en) * 2010-04-09 2014-08-19 1311854 Ontario Limited Foldable or detachable feed rail for rock drill
WO2011130688A3 (en) * 2010-04-16 2012-01-26 Joy Mm Delaware Inc. Advancing longwall system for surface mining
CN102939434A (zh) * 2010-04-16 2013-02-20 乔伊·姆·特拉华公司 用于露天开采的前进式长壁系统
US8672415B2 (en) 2010-04-16 2014-03-18 Joy Mm Delaware, Inc. Advancing longwall system for surface mining
CN104727821A (zh) * 2010-04-16 2015-06-24 乔伊·姆·特拉华公司 用于露天开采的前进式长壁系统
CN102939434B (zh) * 2010-04-16 2015-07-29 乔伊·姆·特拉华公司 用于露天开采的前进式长壁系统
US9096389B2 (en) 2010-04-16 2015-08-04 Joy Mm Delaware, Inc. Advancing longwall system for surface mining

Also Published As

Publication number Publication date
FR2164725A1 (enExample) 1973-08-03
DE2262029B2 (de) 1980-03-13
FR2164725B3 (enExample) 1976-01-09
DE2262029A1 (de) 1973-07-05
DE2262029C3 (de) 1980-11-13
GB1408270A (en) 1975-10-01
DE7246336U (de) 1977-04-28

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