US3785704A - Planer mining installation - Google Patents

Planer mining installation Download PDF

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Publication number
US3785704A
US3785704A US00244168A US3785704DA US3785704A US 3785704 A US3785704 A US 3785704A US 00244168 A US00244168 A US 00244168A US 3785704D A US3785704D A US 3785704DA US 3785704 A US3785704 A US 3785704A
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US
United States
Prior art keywords
conveyor
carriers
installation according
elongate member
mineral
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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
US00244168A
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English (en)
Inventor
C Rassmann
B Ostrop
A Hauschopp
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
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Gewerkschaft Eisenhutte Westfalia GmbH
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    • 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
    • E21C—MINING OR QUARRYING
    • E21C27/00—Machines which completely free the mineral from the seam
    • E21C27/20—Mineral freed by means not involving slitting
    • E21C27/32—Mineral freed by means not involving slitting by adjustable or non-adjustable planing means with or without loading arrangements
    • E21C27/34—Machine propelled along the working face by cable or chain

Definitions

  • ABSTRACT A mineral mining installation composed of a plough movable along a multi-section conveyor.
  • the plough is constructed from an elongate beam supported in parallelism with and above the mineral face side of the conveyor.
  • the beam is supported at its ends by means of a combination of rigid columns and cutter bit carriers pivotably attached to the beam.
  • the cutter bit carriers engage a guide rail at the mineral face side of the conveyor and the columns are in turn supported on the carriers.
  • the beam and carriers form a parallelogram-type linkage with the guide rail and the carriers pivot to a limited extent as the plough is moved along the conveyor.
  • a further support means extends from the beam over the conveyor and is guided at the goaf side of the conveyor where a drive chain is provided.
  • Sets of cutter bits are attached to the columns and the beam as well as to the cutter bit carriers.
  • the present invention relates to a mineral mining installation.
  • a mineral mining installation comprising amineral winning appliance adapted for movement along a conveyor, the appliance being composed of an elongate member disposed generally parallel to the longitudinal axis of the conveyor and in a position vertically offset from the conveyor and means for supporting the elongate member so that a space is formed between said support means, the conveyor and the elongate member with the elongate member and the support means effectively forming a parallelogram-type linkage.
  • the winning appliance or v plough is preferably adapted for use with longwall mineral seams with a thickness from 1.3 to 2.5'metres.
  • the aforesaid supportmeans preferably supports the elongate member at the mineral face side of the conveyor and includes cutter bit carriers pivotable in relation to said elongate members. Stop members can be provided to limit the pivoting of the carriers.
  • the support means preferably also comprises upstanding columns rigidly connected to the ends of the elongate member. It is particularly significant that the appliance is supported by pivotable carriers and that the engagement and disengagement of the cutter bits can be controlled by the pivotal movement of the carriers effected when the appliance reverses its direction of movement.
  • the columns can be provided with cut-limiting devices.
  • additional support means for supporting the elongate member at the goaf side of the conveyor.
  • This additional support means preferably comprises a plate attached to said elongate member and extending over the conveyor and a support member connected to the drive chain and guided at the goaf side of the conveyor, the support member being pivotably connected to the plate.
  • the cutter bit carriers can have lower portions which extend downwardly over the mineral face side of the conveyor with clearance therefrom to project towards the floor of the mine working.
  • the sets of cutter bits provided on the lower portions of the carriers face out wardly from the appliance and the portions preferably have inclined loading faces directed inwardly of the appliance.
  • Sets of cutter bits are preferably pivotably connected to the columns in such manner that only the cutter bits attached to the rearmost column relative to the direction of movement of the appliance are effective in cutting the mineral face.
  • a drive chain for propelling the appliance along the conveyor is conveniently provided at the goaf side of the conveyor and the support member of the additional support means can be connected to the chain. It is desirable for the plate of the additional support means to be connectible to the central region of the elongate member at various vertically offset positions.
  • the lower portions of the carriers engage a guide rail disposed at the mineral face side of the conveyor.
  • Sliding skids and/or rollers can be provided between the guide rail and the carriers.
  • the columns can likewise engage the lower portions of the carriers.
  • the carriers tend to pivot in relation to the elongate member as a result of the frictional force between the carrier and the guide rail and the reactive forces produced by the cutting action of the appliance. This pivotal movement of the carriers occurs in the manner of a parallelogram-type linkage.
  • each of the carriers engages the guide rail over a first bearing surface and the lower end of the associated column engages the lower portion of the carriers over a second bearing surface, the first and second bearing surfaces lying on a common circle concentric with the axis of pivotal movement of the carrier.
  • Additional sets of cutter bits can be pivotably attached to the ends of the elongate member in such 7 manner that only the set of cutter bits at the forward end of the elongate member relative to the direction of movement of the appliance is effective in cutting the mineral face.
  • the cutter bits attached to the columns preferably effect a deeper cut than the other cutters so as to produce a preliminary cut at about the centre of the mineral seam.
  • This cut terminates at some distance from the longwall when the appliance is reversing its direction of motion but the sets of cutter bits on the column nearest the end of the longwall become effective when the appliance is moved back to remove the mineral left by the preliminary cut.
  • These newly-effective cutter bits then serve to produce a preliminary cut for the next cutting cycle. In this way stable zones at the ends of the longwall become unnecessary.
  • a further advantage of the invention can be realized by making the point of attack of the chain on the appliance longitudinally adjustable, so that the appliance is able, at least over part of its length, to overrun the chain reversal point.
  • This characteristic of the invention is based on the realization that with an appliance of relatively great length it is less advantageous to utilize the so-called tearing hook effect, which is usually obtained by giving the chain a point of attack in advance of the cutter bits.
  • An automatic displacement device can be provided to move the support member to a limited extent so that the appliance is moved on when the drive chain cannot effect any further movement of the appliance at one end of the longwall.
  • the cutting contour effected at the floor zone of the seam by the set of bits provided on pivotable carriers is inclined in res pect of the mineral face in such a way that the mineral face and the conveyor side wall or the guide rail provided on the latter converge V-wise towards the floor.
  • an acute-angle gap is formed so that, during the pivoting operation which the carriers perform in a vertical plane parallel to the mineral face, the cutter bits provided on one of the carriers can disengage from the mineral face prior to a fresh cutting cycle.
  • the lower portion of each carrier is preferably of wedge-shaped configuration, the width of its end face nearer to the floor being largely equal to that of the cutting surface of the lowermost cutter bits.
  • At least one of the two floor cutter bits is vertically displaceable in relation to the carrier, and these bits are preferably extensible and retractable by hydraulic means.
  • Guide means which is preferably Cardanic, can be associated with these displaceable floor bits and this guide means can be constructed in such a way that by angular movements in a vertical plane parallel to the mineral face the cutting angle towards the floor is adjustable, while by pivoting movements in a likewise vertical plane, which is nevertheless perpendicular to the mineral face, the angle of the floor bits towards the floor is adjustable.
  • the cutting depth in respect of the floor can be adjusted.
  • the aforesaid guide rail with which the carriers are in engagement may be L-shaped with a top wall projecting over the upper flange of the conveyor to form a groove which is open towards the conveyor.
  • the carriers can have hook-shaped projections which are received in the groove, with a certain amount of clearance, in such a way that when the conveyor and the appliance are in the normal position the projections do not come to rest against any surface.
  • On the goat side of the installation guide channels for the chain can be provided.
  • An upper channel can accommodate the traction run of the chain and a lower channel can accommodate the return run in the manner known per se. These channels are preferably so positioned in relation to one another that they align with the take'up-point and the run-off point of the chain on the reversing wheels.
  • the appliance can be exceptionally heavy and designed in particular for cutting through the entire thickness of a mineral seam with most of the tractive force acting on the appliance can be converted into cutting work.
  • the appliance of the invention only requires a very narrow passage, as the parts extending beyond the mineral face of the conveyor can be made relatively short.
  • the point of attack for the chain, on the one hand, and the resulting over-all cutting-power of the bits on the mineral face, on the other, are situated opposite each other, at approximately the same level, and thus turning forces can be equalized.
  • the point of attack can moreover be positioned approximately in the centre of gravity for the over-all mass of the appliance and this ensures very smooth operation of the appliance.
  • the guide parts of the drive chain are preferably so arranged that when the conveyor is moved forwards no fine coal can find its way into thepath of the chain and particularly, of course, into the return run.
  • This enables the chain to be lubricated, hitherto impossible in mining, owing to the serious fouling of the tracks, and the chain guiding system can be made of materials which produce little noise.
  • This in turn means that the chain speeds can be increased without exceeding the permis sible noise level.
  • FIG. 1 is a perspective view of part of a mineral mining installation made in accordance with the invention
  • FIGS. 1 to 3 there is shown a mineral mining installation which has a winning appliance or plough 1 guided for movement along a multisection conveyor l9.
  • the conveyor 19 is, in known manner, constructed from channel sections joined endto-end, each channel section being composed of two generally sigma-shaped side walls adjoined by a horizontal wall forming a conveying surface.
  • a scraper chain assembly serves to transport mineral along the conveyor 19.
  • the plough 1 has an elongate member in the form of a rigid beam 6 extending parallel to the longitudinal axis of the conveyor 19 and supported on (inter alia) vertical columns 4, 5.
  • the columns 4, 5 are indirectly supported for movement along an L-shaped guide rail 3 connected to the mineral-face side wall 2 of the conveyor 19.
  • the rail 3 has a top bearing wall 29 which projects over the upper flange of the side wall 2.
  • the space defined between the guide rail 3, the beam 6 and the columns 4, S has a length at least equal to one of the channel sections of the conveyor ,19.
  • the plough l is provided with cutter bit carriers 9, 10 disposed at ends of the beam 6 adjacent the columns 4, 5.
  • the carriers 9,10 also support the beam 6 and the carriers 9,10 are pivotable to a limited extent about spindles 8 carried by the beam 6 and extending generally perpendicularly to the mineral face denoted 7. As shown in FIG. 1, the cutter bit carriers 9, l0 slidably engage the top wall 29 of the guide rail 3.
  • additional support means in the form of a shaped plate 11 connected to a verticallydeepened central region 40 of the beam 6 and projecting rearwardly from the face 7 and over the conveyor 19.
  • the central region 40 of the beam 6 is provided with two pairs of apertures 41 each pair of apertures 41 being disposed one above another.
  • the plate 11 has corresponding projections or plugs 42 which fitinto the upper or lower sets of apertures 41.
  • the beam 6 is also provided with bores which extend downwardly from the uppermost edge thereof to penetrate the apertures 41.
  • the plugs 42 of the plate II are also provided with bores extending vertically downwards so that the plugs 42 can be inserted into one or other set of apertures 4i and secured therein with pins 44 received by the aligned bores in the beam 6 and the plugs 42.
  • the plate II can thus be secured to the beam 6 in one of two selectible positions.
  • the plate Ill which has a somewhat vaulted-shaped cross-section parallel to the conveyor is hinged, by means of a shaft 29, to a downwardlyextending support member I2 guided at the stowage or goaf side of. the installation.
  • the shaft Ztl extends substantially parallel to the longitudinal axis of the conveyor I9.
  • the support member I2 is provided with a guide element 21 at its lower extremity and this element 2ll engages in the upper channel 23 of three channels provided by a profiled plate member 50 attached to the goat side wall of the conveyor I9.
  • the upper and lower channels 23, 24 respectively, of the profiled plate 50 receive a drive chain 22 which is guided for movement within the channels 23, 24.
  • the guide element 21, which is received in the channel 23, is connected to the chain 22 so as to effect movement of the plough 1 along the conveyor I9 when the chain 22 is driven.
  • a further guard plate 5i. is disposed at the outer side of the channels 23, 24 and the chain 22.
  • the plough ll of FIG. 4 has a composite structure constituting the elongate member. This structure is composed of a central holder 62 which serves to receive end parts 60, 61 each of which is resiliently torsionable about the longitudinal axis of the holder 62. The end parts 69, 61 are clamped within the holder 62.
  • each carrier 9, I9 has a lower portion, which bears a set of cutter bits, I3, I4, an intermediate portion and an upper portion.
  • the lower portions of the carriers 9, III are each of an irregular hexagonal shape in side view and triangular shape in end view. These lower portions each have a hooklike projection which extends over the top wall 29 of the rail 3 and has an extremity received in a channel 5ll formed between the underside of the wall 29 and the upper face of the upper flange of the conveyor side wall 2. There is sufficient clearance horizontally and vertically, as designated by the numerals 52, 53 in FIG.
  • each lower portion of the carriers 9, III to cope with any unevenness of the floor of the working even when the plough I is relatively long.
  • a recess which has a curved surface 28 which seats on the top wall 29 of the guide rail 3.
  • the lower portions of the carriers 9, I also each have a curved surface 27 which extends beneath and abuts the lower ends of the associated column 4, The surfaces 27, 2 9
  • each lower carrier portion lie on a common circle 3.
  • Rollers or the like can also be provided at one or both the surfaces 27, 28.
  • the intermediate portions of the carriers 9, I0 project upwardly behind the columns 4, 5 relative to the mineral face 7.
  • the upper portions of the carriers 9, It) are formed as projections 25 which engage adjustable stop members 26 provided on the elongate members 6, (FIGS. I-3) or -62 (FIG. 4).
  • the cutter bits I3, I4 are disposed to face towards the ends of the plough I and the inclined inner sides of the lower portions of the carriers 9, I9 act as loading faces. This arrangement provides a cutting contour of V-shaped configuration converging towards the floor of the working, and the engagement and disengagement of the cutter bits I3, I4 with the face 7 is controlled by the movement of the carriers 9, Id.
  • the overall arrangement of the elongate member 6, 60-62 and the carriers 9, I0 provide a parallelogram-type linkage whereby during operation displacement of the carriers 9, 10 produced as a result of the frictional force encountered between the rail 3 and the carriers 9, It) and as a reaction to cutting friction experienced by the cutter bits 13, I4, occurs.
  • Two further sets of cutter bits I5, I6 are pivotably connected with hinges pivotable about axes 30 to the inner sides of the columns 4, 5.
  • Stop members 3I, 32 are attached to the bits I5, I6 and disposed between the cutter bits I5, I6 and the respective columns 4, 5.
  • the rearmost set of cutter bits 14, IS in relation to the direction of movement of the'plough I is moved outwardly by engagement with the mineral face 7 to become rigidly held in a cutting position by the associated stop membet 31, 32.
  • the foremost set of cutter bits I3, 14, relative to the direction of movement of the plough I is in contrast moved inwardly by engagement with the face 7 to an inoperative position.
  • Upper sets of cutter bits I7, I8 are similarly pivotably connected with hinges pivotable about axes 35 to the ends of the elongate member b, oil-62.
  • Stop members 90, 9i are attached to the cutter bits I7, 18 and disposed between the cutter bits I7, I8 and the elongate member 6, 60-62. As shown in FIG. 2,
  • the point of attack of the chain 22 is centralized and tends to follow up the foremost sets of cutter bits I3, I4, 17, I8 and precedes the sets of cutter bits I5, I6 so that these latter cutting tools effeet a tearing hook action on the mineral face 7 which produce a cut which is effective as a preliminary cut for the succeeding cutting cycle.
  • the centralized point of attack and the length of the plough l ensures that the plough 1 can travel to the end of a longwall face. No stable hole is required since the reversal zone for the chain 22 and the end of the longwall face are generally closer together than the distance between the point of attack and each of the cutter bit carriers 9, 10.
  • Tractive force applied to the chain 22 is transmitted via the assembly 11, 12 to the elongate member 6, 60-62, and thence to the carriers 9, 10 to move the plough 1 in one direction along the conveyor 19. Since the majority of the weight of the plough 1 is transmitted to the guide rail 3 from the carriers 9, 10, frictional forces occur between the lower portions of the latter and the guide rail 3. These forces in conjunction with the cutting resistance encountered by the foremost set of cutter bits 13, 14 engaging the mineral face 7 cause the associated foremost carriers 9, l topivot about the spindle 8 and assume an inclined position in relation to the beam 6, 60-62, as limited by the stop member 26.
  • the rearmost set of cutter bits l4, 13 is, in contrast, inoperate for cutting and the associated rearmost carrierll), 9 pivots in the same sense as the formost carriers 9, 10 so that the loading face of the carrier 10, 9 is directed towards the floor to cause detached mineral to be loaded in the conveyor 19.
  • the sets of bits l7, 18 facing forwardly of ,-the direction of movement of the plough l is brought into a cutting position set by the stop member 90.
  • 91 f and the set of bits 15, 16 which is located rearwardly j' of the direction of movement of the plough l is brought into a cutting position set by the stop member 31, 32. j.
  • the set of cutter bits l5, l6 serve to produce a prelimil nary cut prior to the reversal of the direction of movement of the plough 1, i.e., in. the preceding cutting I cycle to that for which it is effective.
  • the tractive force is applied to the chain in a reverse direction to hitherto with the result that the plough 1 moves back along the l face 7.
  • the carriers 9, l0 pivot in an oppol site sense to that hitherto produced and the setof cutmember and means for supporting the member in a position generally disposed parallel to and vertically above the conveyor, said support means including spaced-apart cutter bit carriers which are pivotably connected to said elongate member to provide a space between the support means and the elongate member.
  • said elongate member and extending over the conveyor and a support member connected to the drive chain and guided at the goaf side of the conveyor, the support member being pivotably connected to the plate.
  • the support means also comprises upstanding columns rigidly connected to the ends of the elongate member.
  • stop members are provided for the sets of cutter bits attached to the columns and to the elongate member.
  • each of the carriers engages the guide rail over a first bearing surface and the lower end of the associated column engages the lower portion of the carrier over a second bearing surface, the first and second bearing surfaces lying on a common circle concentric with the axis of pivotal movement of the carrier.
  • cutter bit carriers are disposed at the ends of the elongate member, said carriers each having a lower portion which extends over the mineral face side of the conveyor to face towards the floor of the working, cutter bits being attached to said lower portion so as to face outwardly from the elongate member and each carrier also has an upper projected portion engageable with a stop member to limit the pivoting movement of the carrier.

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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)
  • Machines For Laying And Maintaining Railways (AREA)
  • Chain Conveyers (AREA)
US00244168A 1971-04-17 1972-04-14 Planer mining installation Expired - Lifetime US3785704A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2118713A DE2118713B2 (de) 1971-04-17 1971-04-17 Kohlenhobel

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US3785704A true US3785704A (en) 1974-01-15

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US00244168A Expired - Lifetime US3785704A (en) 1971-04-17 1972-04-14 Planer mining installation

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US (1) US3785704A (de)
JP (1) JPS5428803B1 (de)
CS (1) CS183657B2 (de)
DE (1) DE2118713B2 (de)
FR (1) FR2133570B1 (de)
GB (1) GB1384592A (de)
ZA (1) ZA722548B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4035025A (en) * 1975-01-09 1977-07-12 Gewerkschaft Eisenhutte Westfalia Mineral winning ploughs
US4159850A (en) * 1977-02-05 1979-07-03 Gewerkschaft Eisenhutte Westfalia Mineral mining installation with face end winning

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3011100C2 (de) * 1980-03-22 1993-11-18 Halbach & Braun, 5600 Wuppertal Hobelanlage
DE3024499A1 (de) * 1980-06-28 1982-01-28 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Hobel fuer die untertaegige gewinnung
DE3133233A1 (de) * 1981-08-21 1983-04-07 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen "foerderer mit integrierter hobelfuehrung fuer untertaegige gewinnungsbetriebe"
DE3517063C1 (de) * 1985-05-11 1986-09-04 Klöckner-Becorit GmbH, 4620 Castrop-Rauxel Kohlenhobel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1103765A (en) * 1964-03-24 1968-02-21 Coal Industry Patents Ltd Improvements relating to mine ploughs
US3382003A (en) * 1965-05-10 1968-05-07 Wewerkschaft Eisenhutte Westfa Mining planer arrangement having a parallelogram-disposed articulatedly mounted cuttig means

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1260616A (fr) * 1960-03-23 1961-05-12 Stamicarbon Rabot à charbon

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1103765A (en) * 1964-03-24 1968-02-21 Coal Industry Patents Ltd Improvements relating to mine ploughs
US3382003A (en) * 1965-05-10 1968-05-07 Wewerkschaft Eisenhutte Westfa Mining planer arrangement having a parallelogram-disposed articulatedly mounted cuttig means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4035025A (en) * 1975-01-09 1977-07-12 Gewerkschaft Eisenhutte Westfalia Mineral winning ploughs
US4159850A (en) * 1977-02-05 1979-07-03 Gewerkschaft Eisenhutte Westfalia Mineral mining installation with face end winning

Also Published As

Publication number Publication date
FR2133570B1 (de) 1976-07-09
DE2118713A1 (de) 1972-11-09
JPS5428803B1 (de) 1979-09-19
DE2118713C3 (de) 1980-12-11
FR2133570A1 (de) 1972-12-01
GB1384592A (en) 1975-02-19
DE2118713B2 (de) 1980-04-10
ZA722548B (en) 1973-03-28
CS183657B2 (en) 1978-07-31

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