FR2647155A1 - BASE SLAUGHTER INSTALLATION FOR UNDERGROUND MINE SIZE - Google Patents

Abstract

Plane cutting installation for underground mine size. It comprises at least one movable screen device 10, 11 comprising means adapted to cooperate with the guide ramps of a plane R in the end parts of said ramps, that is to say in the vicinity of the ends of the size adjacent to the base track b and / or the head track t of the waist. Application: extraction of ore, such as phosphate.

Description

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  The subject of the invention is a slaughter facility

  & planer for underground mine size.

  We know that underground coal mines, likewise

  metal mines or sedimentary deposits

  can be exploited on "planer-sized" worksites, that is to say following a felling process in which a flap moves back and forth in the longitudinal direction of the forehead. The size of the material detached from the working face of the plane being loaded on a conveyor in size or conveyor armored moved by pushers against said face of size. In an exploitation site of this type, the armor has, on its side oriented towards the face of size, a guide rail of the plane, which is driven by an endless chain between a gallery or base track at one of the ends of the waist and a gallery or headway at the other end of the waist, and vice versa. If the loading of the material shot in the armor, from the lane which is between it and the face of the face is achieved without difficulty during the displacement along the face of size, it is not always the same at the ends of the size o are the means of driving the plane, those of the conveyor and the

staff.

  The change of direction of movement of the plane, at the ends of the waist, frequently causes an accumulation of the detached material in the lower part of the vein, an output of said product in the channels of

  size and, sometimes, damage to the training

  particularly when these are placed on the face of the face rather than the side of the embankment. Similarly, if the smoothing of the face is generally obtained without particular difficulty in the current parts of the size by the very construction of the plane, it is not the same with the ends of size o

  the vein is more difficult to attack.

  It is, therefore, a general object of the invention to provide an installation for overcoming the

  disadvantages reported above.

  It is, in this respect, an object of the invention to provide an underground mine size planing slaughter facility which makes it possible to recover the material of the exploited vein not slaughtered by the flap at the ends of the mine.

size.

  It is also an object of the invention to provide such an installation that allows easy loading on the shielded conveyor material accumulated at the ends of size. It is also an object of the invention to provide such an installation which avoids the exit of the material into the

waist ways.

  It is still an object of the invention to provide such an installation which protects the drive members of the flap and the armor on the side of the face while cutting.

  facilitating the thrust of the armor at the waist ends.

  It is, finally, an object of the invention to provide such an installation which improves the safety of the operating personnel from the planer waist to the ends of

said size.

  These and other objects are attained in an underground mine size planer felling plant by the fact that at least one movable screen device having means adapted to cooperate with the devices is associated with said installation. flap guide ramps in the end portion of said ramps, i.e., adjacent adjacent waist ends & the base track and / or the headway

size.

  In a preferred embodiment, the device with movable screen comprises a shovel on which is coupled by one or more chaps (s) & horizontal articulation

a motion control cylinder.

  Such an organization allows the jack, preferably made as a hydraulic jack, to adapt to the different positions taken by the screen. The latter has, advantageously, in elevation, a somewhat rectangular trapezoid shape contour and, seen in profile, that is to say substantially perpendicular to its direction of travel, an angle-angle contour: angle

obtuse.

  According to another characteristic of the invention, the vertical guidance of the shovel is provided by a hand comprising a clevis adapted to cooperate with the guide rail of the plane, said hand also comprising

  means for lateral guidance of the excavator.

  The subject of the invention is also a displaceable screen

  to equip an installation as defined above.

  above. Other features and advantages of the invention

  will appear from the following description, made as a

  for example and with reference to the accompanying drawing, wherein: - Figure 1is a very schematic view of an underground mine planer size having a screen according to the invention at each end thereof; - Figure 2 is a corresponding sectional view along the broken line 2-2 of Figure 1; - Figure 3 is a partial view, on a larger scale, of the part marked A in Figure 2; FIG. 4 is a view of the screen and a portion of the planing cutter assembly in the direction of the arrow F of FIG. 3, but on a larger scale; FIG. 5 is a view of the screen device according to the invention in the direction of the arrow G of FIG. 3, on a larger scale and with tearing away

part.

  Reference is first made to FIGS. 1 and 2 which illustrate the general organization of an underground mine size comprising a planing slaughtering plant according to

  the invention. In this one, a planar illustrated schematic-

  R moves in the longitudinal direction of the face of size L which extends between a gallery or basic track h and a gallery or L-way. In a manner known per se, the movement of the plane R in the longitudinal direction of the forehead, alternatively between the base track and the headway as schematically shown by the double arrow v, detaches from the working face the material of the operated vein and the loading of this material on a conveyor or armored B , which is provided with the embankment side of a riser r and the front side of size of a rail g guide plane against which the latter bears during his work extraction. The endless pull chain of the plane, as well as the chains of the armored and

  their respective drive means well known in themselves

  themselves are not represented to facilitate understanding

  his drawings, just as the

  pushers of the armored against the face of size.

  According to the invention, it is associated with an installation

  Planer felling for underground mine size

  as described above, -without this description

  has, however, some limiting character

  least one movable screen device disposed at the end

  basic mite and / or the head end of the waist. In what follows, it is the device associated with the end of

  head, 10, which will be described, it being understood that it is a

  identical positive, 11, which is associated with the base end.

  The movable screen device 10 essentially comprises

  Actually a shovel 15, advantageously made by mechanical welding of steel sheets and whose outline in plan, as clearly visible in Figure 4, is substantially that of a rectangular trapezoid while in profile, this contour is that of 3. More specifically, the shovel 15 comprises a bottom plate 16, bounded by an edge 17 (which is in a plane substantially parallel to the roof T of the size in its operating condition), a edge 18 substantially parallel to the face of size L in its operating condition also, an edge 19 of shorter length than the edge 18 of the embankment side and, between the lower ends (still in operative condition) edges 18 and 19, an edge a somewhat double-angled contour, 20, which thus has a high branch 21 and a lower branch 22, both parallel to the wall m of the size (in operating condition) and which are connected by a portion 23. As visible on the Figu 4 and 5, on the front face of the plate 16 are reported, by welding, a double multiplicity of ribs 30 and 31 arranged in checkerboard. According to the invention, also, the shovel 15 which has just been described is intended to move between a first position shown in full lines in FIGS. 2 and 5 (where said shovel is at the end of the face-face at near the leading channel t> and a second position, shown in dashed line, further from said path, the displacement between the two positions being controlled by a

jack 35 hitched on the shovel.

  In the embodiment described and shown, the jack 35 is advantageously a hydraulic jack, of the double telescope type, the rod 36 of which is hinged to the blade 15 by horizontal clevises 37 (in the operating condition of the device> thus allowing the cylinder 35 to adapt to the different positions taken by the shovel.For the guiding of the latter, during its displacement, the invention provides to apply a guide hand 40 fixed by two sets of bolts as 41 and 42 in the vicinity of its edges 21 and 23, the hand 40

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  comprising a yoke 43 on the front face of the shovel and an L-shaped bracket 44, welded to one of the flanges of the yoke 43, on the embankment side of said yoke. This last

  cooperates with the guide rail & plane R for the posi-

  and the vertical guidance of the shovel, while the lateral guiding is provided by the bracket 44 which cooperates with an iron or welded rail on a side plate 1 of the armor B, which faces the front of size L.

  The operation of the excavator device according to

  The invention results immediately from the foregoing: since the plane R is in the position shown in FIGS. 1 and 2, the screens 10 and 11 are in the position shown in phantom in FIGS. 2 and 5, that is to say in the position of greater deployment of the rods of the cylinders 35. The flap R then moves in one of the two directions shown by the double arrow y, for example in the direction of the base track L and, when it reaches the 11 of the device, the jack of this device is actuated to move the shovel it comprises to the track k until complete retraction of its rod, the plane R following the shovel during this movement until he reaches the end of the

  size where it reverses its direction of movement.

  After this reversal of the direction of movement of the plane R, it moves to the leading y, at the same time that is actuated the cylinder of the device 11 so that the shovel of this device follows the plane, and that up to 'with total deployment of the cylinder rod which brings the

  shovel the device in its original position.

  This is a process similar to the one just

  describes what happens when the plane R approaches the

  10 and that the cylinder 35 is actuated to clear the rod 36 and move the blade 15 at the same time as the plane R of the position shown in dashed lines to that shown in solid lines, etc. The presence of movable screen devices at

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  each end of the planer size then allows, in a slaughtering installation according to the invention, to recover the product of the operated vein not slaughtered by the planer at the ends of size, to load on the shield B the product accumulated at said ends and avoid the exit

  of the product in the channels of sizes k and t.

  In addition, the protection of the training

  the planer and the armor facing the front face L, it facilitates the action of the pushers at the ends of the armored B and improves, concomitantly, the safety of the

  staff working at the ends of the -size.

  In a planetary phosphate mining plant working over a length of about 80 m, good results were obtained with

  shovel with a height of about 1300 mm, a width of

  1200 mm and whose bottom plate 16 had a thickness of about 40 mm. The displacement control cylinder 35 of the shovel was a hydraulic cylinder developing a maximum thrust force of 96 tons and a maximum tractive effort of 6.3 tons under pressure.

  of 300 Bars for a run of about 1600 mm.

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RVENEDICATIONS

  1. Flanging slaughter facility for underground mine size, characterized in that it comprises at least one displaceable screen device (10, 11) comprising means adapted to cooperate with the guide rails <g) of the plane ( R) in the end portions of said ramps, that is, in the vicinity of the waist ends adjacent to the base track (b) and / or the overhead (t) of the waist. 2. Installation according to claim 1, characterized in that the movable screen device (10, 11) comprises a shovel (15) on which is coupled by one or more screeds with horizontal articulation (37) a cylinder (35). ) of

movement control.

  3, Installation according to claim 1 or 2, characterized

  characterized in that the jack (35) is preferably made of

as a hydraulic cylinder.

  4. Installation according to any one of the

  cations, characterized in that the shovel (15) has, in elevation, a contour somewhat in the shape of a rectangular trapezium and, seen in profile, that is to say substantially perpendicular to its direction of

  displacement-, an angle contour obtuse angle.

  5. Installation according to any one of the claims

  tions, characterized in that the vertical guidance

  shovel (15) is provided by a hand (40) comprising a yoke (43) adapted to cooperate with the ramp (g) for guiding the plane (R) and in that said hand comprises

  also means for the lateral guidance of the shovel.

  6. Movable screen device adapted to equip a slaughtering installation according to any one of

preceding claims.