JP6647960B2 - Table feeder - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a table feeder for delivering a load delivered from a bucket elevator to a boom conveyor.

  The table feeder described in Patent Document 1 includes a rotatable turntable and a fixed side cover provided on an outer peripheral edge of the turntable. In this table feeder, a gap is provided between the side cover and the turntable by providing a seal on the side cover.

  Further, in the table feeder described in Patent Literature 2, by providing the side cover so as to rotate together with the turntable, a gap is not created between the turntable and the side cover.

Japanese Patent No. 4719511 Japanese Utility Model Registration No. 2595343

  However, in the table feeder described in Patent Literature 1, it is practically impossible to reduce the leakage to zero, and it is inevitable that some load leaks from the seal, and the seal wears out. There is a problem that the amount of leaking load increases at an accelerated rate as the process proceeds.

  Further, the table feeder described in Patent Literature 2 has a problem that in order to rotate the side cover together, installation and maintenance of a driving device for that are necessary.

  An object of the present invention is to provide a table feeder that can reduce the amount of load passing through a gap between a fixed type side cover and a turntable.

  In order to achieve the above object, a table feeder according to the present invention is provided with a turntable that receives a load from a pivotable bucket elevator and supplies the load to an outlet, and a turntable provided on an outer peripheral edge of the turntable. In a table feeder provided with a side cover having the discharge port formed in a shape and having a scraper provided at the discharge port and discharging a load on the turntable, a lower portion of an inner peripheral surface of the side cover is provided. And a load leakage preventing member for returning the load to the center of the turntable in order to reduce the load leaking from the gap between the turntable and the side cover.

  ADVANTAGE OF THE INVENTION According to the table feeder which concerns on this invention, the quantity of the load which passes through the clearance gap between a fixed type side cover and a turntable can be reduced.

It is a side view of the continuous unloader concerning one embodiment of the present invention. It is a sectional side view of a table feeder. It is a plane sectional view of a table feeder. FIG. 3 is an enlarged view of a main part of FIG. 2. It is an important section enlarged sectional view of a table feeder concerning other embodiments.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

  As shown in FIG. 1, a continuous unloader 1 includes a traveling section 3 provided on a quay 2 such as a wharf so as to be able to travel, a rotating tower section 4 provided on the traveling section 3 so as to be rotatable around a vertical axis, and a rotating tower. A boom 5 provided on the part 4 so as to be capable of raising and lowering; a top frame 6 provided at the tip of the boom 5 so as to be always horizontal with respect to the raising of the boom 5; And a bucket elevator 7 provided.

  The traveling unit 3 travels on a rail (not shown) laid on the quay 2.

  The base end of the boom 5 is connected to an intermediate portion of the rotating tower 4 in the vertical direction. In addition, a balancing lever 8 for balancing the boom 5 is provided at the upper end of the rotating tower unit 4 so as to be able to move up and down. The balancing lever 8 extends parallel to the boom 5. The balancing lever 8 is also formed to extend in a direction opposite to the boom 5, and a counter weight 9 is provided at an end in the opposite direction.

  The boom 5 and the balancing lever 8 are connected via a top frame 6, and constitute a parallel link mechanism together with the top frame 6 and the rotating tower 4. Thus, the top frame 6 is always kept horizontal even when the boom 5 is lowered.

  The top frame 6 includes an arm 10 that forms a parallel link mechanism together with the boom 5 and the like, and a main frame 11 that is provided integrally with the arm 10 and that is always kept horizontal. The bucket elevator 7 is provided in the main frame part 11 so as to penetrate in the up-down direction and to be pivotable.

  The bucket elevator 7 is for transporting bulk materials such as iron ore and coal as the load 13 in the hold 12 upward, and is formed to extend vertically. At the lower end of the bucket elevator 7, a scraper 14 for scraping the load 13 in the hold 12 is formed. The bucket elevator 7 includes a driving sprocket 15 disposed at an upper end, a reversing sprocket 16 disposed below and adjacent to the driving sprocket, a front sprocket 17 and a rear sprocket 18 disposed at a lower end, and these sprockets 15. , 16, 17, and 18, and the load 13 falling from the bucket chain 19, which is arranged facing the reversing sprocket 16 and is turned upside down by the driving sprocket 15, is paid to a table feeder 20 described later. And a first chute 21 (see FIG. 2).

  The table feeder 20 transfers the load 13 delivered from the bucket elevator 7 to a boom conveyor 22 provided on the boom 5. The rotary tower section 4 and the traveling section 3 are provided with bulk transfer devices 24 for transferring the load 13 sent from the boom conveyor 22 to a conveyor facility 23 installed on the quay 2.

  As shown in FIGS. 2 and 3, the table feeder 20 is rotatably provided on the main frame portion 11 of the top frame 6, receives the load 13 discharged from the first chute 21, and transfers the load 13 to the discharge port 42. A turntable 25 to be supplied, a side cover 27 formed on the outer peripheral edge of the turntable 25 and having a cylindrical shape and having a discharge port 42, And a scraper 26 for dispensing onto the boom conveyor 22 in the direction outside.

  The turntable 25 includes a bottom plate 28 formed in a donut shape so as to surround the bucket elevator 7, a cylindrical inner peripheral wall 29 extending upward from the inner peripheral end of the bottom plate 28, And a table frame 30 that supports the peripheral wall 29. On the table frame 30, a rack gear 31 extending in the circumferential direction is provided with teeth facing inward in the radial direction, and a rail member 32 extending in the circumferential direction is provided at a lower end. A pinion gear 33 a of a drive motor 33 provided on the top frame 6 is meshed with the rack gear 31. The rail member 32 is supported by wheels 34 provided on the top frame 6.

  A second chute 40 is provided between the turntable 25 and the boom conveyor 22. The second chute 40 is supported by the side cover 27 and discharges the load 13 from the scraper 26 to the boom conveyor 22.

  The scraper 26 is made of a plate material extending from the upper wall 41 of the second chute 40 toward the inner peripheral wall 29 of the turntable 25. The scraper 26 has one end fixed to the upper wall 41 and the other end close to the inner peripheral wall 29. The scraper 26 is inclined such that the second chute 40 side is closer to the rotation direction of the turntable 25 than the inner peripheral wall 29 side, and guides the load 13 on the rotating turntable 25 to the second chute 40. It has become.

  As shown in FIG. 4, the side cover 27 is supported by a plurality of columns 35 provided on the main frame portion 11, and is disposed on the bottom plate 28 of the turntable 25 with a small interval. On the outer peripheral surface of the side cover 27, a seal 39 for closing between the side cover 27 and the bottom plate 28 is provided extending downward. A support member 45 for receiving the load 13 leaked from a gap between the side cover 27 and the bottom plate 28 is provided on the support 35 below the bottom plate 28.

  In addition, the table feeder 20 according to the present embodiment transfers the load 13 to the lower part of the inner peripheral surface of the side cover 27 in order to reduce the load 13 leaking from the gap between the turntable 25 and the side cover 27. A load leakage prevention member 43 for returning to the center side is provided.

  The load leakage prevention member 43 is formed of an inclined surface 38a that is inclined downward toward the center of the turntable 25. The inclined surface 38 a is formed on a plurality of lower liners 38 that are detachably provided on the inner peripheral surface of the side cover 27. The lower liner 38 is formed in a tapered cross section (a right-angled triangular shape) in which the lower end is thicker than the upper end, and is fastened to the side cover 27 by bolts (not shown). The inclination angle of the inclined surface 38a may be set so as to be inclined in the range of 75 ° to 80 ° toward the outer peripheral side with respect to the horizontal plane. The bottom surface 44 of the lower liner 38 is formed parallel to the bottom plate 28. Above the lower liner 38, the upper liner 37 is provided adjacent to. The upper liner 37 is formed in a rectangular plate shape. The upper liner 37 and the lower liner 38 are made of cast iron, and are provided on the side cover 27 in an annular shape along the circumferential direction.

  Although the inclined surface 38a is formed on the lower liner 38, the present invention is not limited to this. For example, as shown in FIG. 5, the inclined surface 38a may be formed by bending the lower end portion of the side cover 27 inward in the radial direction and bending the tip end portion upward, or by another bending method. It may be formed by bending.

  Next, the operation of the present embodiment will be described.

  As shown in FIG. 1, the load 13 lifted by the bucket elevator 7 falls on the first chute 21 when the bucket elevator 7 is inverted by the driving sprocket 15 at the upper end.

  As shown in FIGS. 2 and 3, the load 13 that has fallen on the first chute 21 is paid out on the turntable 25 of the table feeder 20. Since the turntable 25 is rotating, the load 13 moves in the centrifugal direction.

  As shown in FIG. 4, a lower cover 38 is provided on a side cover located on the outer peripheral side of the turntable 25, and the lower liner 38 is formed with an inclined surface 38a. For this reason, the force moving from the turntable 25 to the outer periphery due to the centrifugal force is offset by the force moving toward the inner periphery by the inclined surface 38 a of the lower liner 38, and the gap between the bottom plate 28 and the side cover 27 is reduced. The load 13 passing through is reduced.

  As shown in FIGS. 2 and 1, the load 13 on the turntable 25 is delivered to the boom conveyor 22 via the second chute 40 when the load 13 hits the scraper 26, and is provided on the rotating tower unit 4 and the traveling unit 3. The pieces are transferred to the conveyor equipment 23 installed on the quay 2 via the bulk transfer device 24.

  As described above, the load leakage preventing member 43 that returns the load 13 to the center side of the turntable 25 below the inner surface of the side cover 27 to reduce the load 13 leaking from the gap between the turntable 25 and the side cover 27. , The amount of leakage of the load 13 leaking from the gap between the bottom plate 28 and the side cover 27 can be reduced, the time for cleaning the leaked load 13 can be reduced, and maintenance of the table feeder 20 and replacement of various parts of the table feeder 20 can be performed. Construction can be facilitated. Then, it is possible to prevent the load 13 leaking from the table feeder 20 from dropping from a high place (top frame 6).

  In addition, since the load leakage prevention member 43 has the inclined surface 38a that is inclined toward the center of the turntable 25 as it goes downward, the load 13 can be returned to the center of the turntable 25 with a simple structure.

  In addition, since the inclined surface 38a is formed in the lower liner 38, the present invention can cope with a continuous unloader that is currently used simply by replacing the lower liner 38. Further, even when the lower liner 38 is worn, the inclined surface 38a can be restored just by replacing the lower liner 38.

  In addition, since the seal 39 for closing the gap between the side cover 27 and the bottom plate 28 is provided to extend downward on the outer peripheral surface of the side cover 27, the amount of the load 13 leaking from the table feeder 20 can be further reduced.

7 bucket elevator 13 load 20 table feeder 25 turntable 26 scraper 27 side cover 42 discharge port 43 load leakage prevention member

Claims (4)

A turntable that receives a load from a pivotable bucket elevator and supplies the load to a discharge port; a side cover that is provided on an outer peripheral edge of the turntable and that is formed in a cylindrical shape and has the discharge port; A table feeder provided at the discharge port and having a scraper for discharging a load on the turntable;
A lower part of the inner peripheral surface of the side cover is provided with a load leakage prevention member for returning a load to the center of the turntable in order to reduce a load leaking from a gap between the turntable and the side cover. Table feeder.   The table feeder according to claim 1, wherein the load leakage prevention member includes an inclined surface that is inclined toward a center of the turntable as it goes downward.   The table feeder according to claim 2, wherein a plurality of liners are detachably provided on an inner peripheral surface of the side cover, and the inclined surface is formed in the liner.   4. The table feeder according to claim 3, wherein a seal that closes between the side cover and the turntable is provided on an outer peripheral surface of the side cover so as to extend downward. 5.

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