JP5440294B2 - Stacker - Google Patents

Description

The present invention relates to a stacker that stacks a conveyed product (for example, a sintered raw material or the like) including powder, particles, and agglomerates in a mountain shape to form a pile.

Conventionally, as shown in FIG. 3, a stacker 81 is used when stacking sintered raw materials (conveyed materials) composed of various raw materials in a raw material yard 80 in a plurality of layers.
This stacker 81 has a boom 82 provided with a belt conveyor for conveying a sintering raw material, and the elevation angle adjusting means 83 provided with a wire (or power cylinder) for winding and unwinding is used to adjust the piles 83a. By adjusting the elevation angle of the boom 82 according to the height, the height position of the tip portion can be adjusted. Moreover, the sintering raw material conveyed with the boom 82 is made to collide with the collision board 84 provided in the front-end | tip part at intervals with the boom 82, and is dropped.

However, the sintering raw material to be stacked is disposed outdoors, and usually contains moisture to prevent dust generation. For this reason, the sintering raw material that collided with the collision plate 84 during conveyance by the boom 82 is likely to adhere to the surface of the collision plate 84, and the distance between the tip of the boom 82 and the collision plate 84 is gradually reduced. There was a variation in the dropping position of the sintered raw material after colliding with 84. As a result, as shown in FIG. 3, the apex positions (● marks in FIG. 3) of the stacked layers 85 to 88 of the respective raw materials constituting the sintered raw material are shifted, and the thicknesses of the stacked layers 86 to 88 are the apexes. It became non-uniform on both sides from the position, and the mixing ratio of the raw materials discharged from each of the loading layers 85 to 88 was unstable when discharged by the reclaimer.

Therefore, for example, Patent Document 1 discloses an apparatus for preventing segregation as a device for preventing the displacement of the apex positions of the stacked layers 85 to 88. Specifically, a collision plate standing on the front surface of the head pulley of the belt conveyor provided on the boom and having a convex central portion, a comb-shaped grizzly disposed between the head pulley and the collision plate, and a collision It has a plurality of U-shaped distribution chutes fixed to the lower end of the plate.

JP 63-92525 A (FIG. 1)

However, even if the conventional device is used, the adhesion of the raw material to the collision plate cannot be prevented, and as a result, the distance between the head pulley and the collision plate is gradually reduced. There is a possibility that a shift occurs in the vertex position.
In addition, the apparatus configuration is complicated, resulting in an increase in equipment cost and poor workability during maintenance.

The present invention has been made in view of such circumstances, and with a simple configuration, the displacement of the apex position of each loading layer constituting the loading mountain can be suppressed, and each loading layer paid out from the loading mountain is configured. It aims at providing the stacker which can stabilize the compounding ratio of a conveyed product.

The gist of the present invention made to solve the above problems is as follows.
(1) After discharging the transported material including powder, grains, and agglomerates from the tip of the boom provided so as to be able to be lifted, the transported material is provided with a gap from the tip of the boom. In a stacker that collides with a collision plate and drops it, stacks it in a mountain shape and forms a stacking mountain,
The collision plate includes a lower plate portion positioned below a height position of a tip portion of the boom, and an upper plate portion connected to an upper end of the lower plate portion, and the upper plate portion is attached to the boom. Curved downward so as to cover the front of the tip, and the lower plate portion is in a state perpendicular to the horizontal direction when the elevation angle of the boom at the time of loading the transported object reaches a maximum. The stacker is connected to the lower end of the upper plate portion so that the collision plate is provided with tilting means for tilting the collision plate to adjust the dropping position of the conveyed product.

(2) The stacker according to (1), characterized in that ribs are provided on both sides in the width direction of the collision plate to prevent the transported object that collides with the collision plate from spreading when dropped.

In the stacker according to the present invention, since the upper plate portion of the collision plate is curved downward so as to cover the front of the tip portion of the boom, even if a conveyed product adheres to the collision plate, the tip portion of the boom And the collision plate can be sufficiently secured. In addition, since the collision plate is provided with a tilting means for tilting the collision plate to adjust the fall position of the conveyed product, for example, even if the property of the conveyed item or the moisture content changes, By adjusting the tilt angle of the collision plate, it is possible to suppress the deviation of the apex positions of the stacked layers constituting the stacked mountain.
Therefore, with a simple configuration, it is possible to suppress the deviation of the apex position of each loading layer that constitutes the loading pile, and to make the thickness of each loading layer uniform on both sides with the vertex position as a boundary, and pay from the loading pile. It is possible to stabilize the blending ratio of the conveyed product constituting each stacked layer to be put out.

Moreover, when the rib which prevents the expansion at the time of the fall of the conveyed product which collided with the collision board is provided in the width direction both sides of the collision board, the fall range of the conveyed product discharged | emitted from a boom can be made into a narrower range. Thereby, the thickness of each loading layer can be more evenly distributed on both sides with the vertex position as a boundary.

It is a partial expanded explanatory view of the tip part of the boom of the stacker concerning one embodiment of the present invention. It is explanatory drawing of the use condition of the same stacker. It is explanatory drawing of the use condition of the stacker concerning a prior art example.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIGS. 1 and 2, a stacker 10 according to an embodiment of the present invention includes a transported object 12 (for example, a powder, a grain, and a lump from a tip portion of a boom 11 provided so as to be able to be lifted and raised) After discharging the sintered raw material), the conveyed product 12 is caused to collide with a collision plate 13 provided at a distance from the tip of the boom 11 and dropped, stacked in a mountain shape, and loaded into a pile 13a. The displacement of the vertex (peak) positions P1 to P3 of each of the stacked layers 13b to 13d constituting the stacked mountain 13a is suppressed, and the thickness of each of the stacked layers 13b to 13d is changed to the vertex position P1. It is made uniform on both sides with P3 as a boundary. This will be described in detail below.

The stacker 10 stacks the transported objects 12 in a plurality of layers in the leveling yard 13e while traveling on rails laid in parallel to the stacking area of the stacking mountain 13a to be formed. The mountain 13a is formed.
The boom 11 of the stacker 10 is provided with a belt conveyor 14 that conveys the conveyed product 12 and adjusts the elevation (tilt) angle around the base of the boom 11 according to the height of the loading mountain 13a. Thus, the height of the tip is adjustable. The belt conveyor 14 includes a tail pulley (not shown) and a head pulley 15 at the base end portion and the tip end portion, respectively, and an endless belt 16 is stretched around the tail pulley and the head pulley 15.

A collision plate 13 is attached to the front of the tip of the boom 11 via a mounting plate 17 provided at the upper end of the boom 11, and the boom 11 and the collision plate 13 can be united and raised. ing. The elevation angle of the boom 11 is, for example, from 15 degrees downward to 15 degrees upward (preferably 25 degrees) based on the horizontal position of the boom 11 (when the elevation angle of the boom 11 is 0 degree). Within range.
The collision plate 13 is disposed in front of the head pulley 15 provided at the tip of the boom 11 with a gap from the head pulley 15. The collision plate 13 is wider than the belt 16 (for example, about 1.05 to 1.2 times the width of the belt 16). Thereby, the conveyed product 12 conveyed and discharged by the belt conveyor 14 can be collided with the collision plate 13 and dropped.

The collision plate 13 includes a lower plate portion 18 positioned below the (axial center) height position of the head pulley 15 disposed at the tip of the boom 11 and an upper plate connected to the upper end of the lower plate portion 18. Part 19.
The upper plate portion 19 is curved downward (average curvature radius: for example, 200 cm) from the upper end position to the lower end position so as to cover the front of the head pulley 15 (so that the head pulley 15 side is concave). More than 500 cm). In this embodiment, the curved portion is formed by bending the flat plate in two steps from the upper end position to the lower end position. For example, the flat plate has one step or a plurality of steps (for example, 3 to 10 steps). ) Or by bending it smoothly continuously.

Of the upper plate 19, the horizontal interval D (the widest interval D) between the upper plate 19 located in front of the head pulley 15 (the discharge direction of the conveyed product 12) and the tip of the head pulley 15 is: For example, it is about 50 to 100 cm.
On the other hand, the upper end position of the upper plate portion 19, although a directly above the head pulley 15, also the upper end of the upper plate portion 19 is in any position, the conveyed 12 to the impingement plate 13 for attachment shape status Since there is no influence, the position may be above the head pulley 15 and in front of or behind the head pulley 15.

Further, the lower plate portion 18 of the collision plate 13 has a flat plate shape (straight section) from the upper end position to the lower end position.
The lower plate 18 is in a vertical state (vertical (horizontal (horizontal)) when the elevation angle when the boom 11 is loaded reaches a maximum (here, 15 degrees which is the upper limit of the above-described range). It is connected to the lower end of the upper plate portion 19 so that it is within a range of ± 5 degrees with respect to the direction (90 degrees). Thereby, when the elevation angle reaches the maximum, the conveyed product 12 conveyed by the belt conveyor 14 collides with the lower plate portion 18, and the conveyed item 12 can be dropped along the lower plate portion 18 in the downward direction. Therefore, it is preferable.

Furthermore, a plurality of water washing nozzles 20 are provided at an upper position of the upper plate portion 19 of the collision plate 13 with an interval in the width direction of the collision plate 13. Since water is jetted from the washing nozzle 20 during the stacking, even if the transported object 12 adheres to the transported object collision surface of the collision plate 13, the adhered transported object 12 can be removed.
Further, a liner (for example, made of ceramics) for suppressing adhesion of the conveyed object is attached to the conveyed object collision surface side of the collision plate 13. Thereby, the fluctuation | variation of the unloading position of the conveyed product 12 by adhesion of the conveyed product 12 to the conveyed product collision surface of the collision board 13 can further be suppressed.
Note that the above-described water washing nozzle and liner need not be attached if not necessary.

On both sides of the collision plate 13 in the width direction, ribs 21 are provided from the base portion to the front portion of the collision plate 13. The ribs 21 are provided so that the conveyed product 12 does not collide with the collision plate 13 and is not scattered outside. Thereby, although the spread at the time of the fall of the conveyed product 12 which collided with the collision board 13 can be prevented, a rib can also be eliminated depending on the case.
Further, the collision plate 13 is provided with tilting means 22 that tilts the collision plate 13 and adjusts the drop position of the conveyed product 12. The tilting means 22 includes a cylinder 23 that is tiltably attached and fixed above the front side of the boom 11, a cylinder rod 24 that is advanced and retracted by the cylinder 23, a distal end portion of the cylinder rod 24, and a base upper portion of the collision plate 13. And an angle adjustment arm 25 for connecting the two.

A rotation shaft 26 is provided along the width direction of the collision plate 13 at the base side lower end portion of the rib 21 of the collision plate 13, and the rotation shaft 26 is attached to the mounting plate 17 attached to the boom 11. It is attached so that it can rotate freely. For this reason, when the rib 21 is not provided on the collision plate 13, an attachment portion is provided on the collision plate, and the rotation shaft 26 is provided on the attachment portion.
Thus, the cylinder rod 24 is advanced and retracted by the cylinder 23, and the collision plate 13 is rotated about the rotation shaft 26, whereby the tilt angle of the collision plate 13 can be adjusted and the collision plate 13 and the head pulley 15 can be adjusted. The interval can be adjusted, and as a result, the drop position of the conveyed product 12 can be adjusted.

Then, the usage method of the stacker 10 which concerns on one embodiment of this invention is demonstrated.
First, the elevation angle of the boom 11 of the stacker 10 is set to the lowest limit position (here, −15 degrees which is the lower limit value of the above-mentioned range), and the conveyed product 12 is moved from the tip of the boom 11 while the stacker 10 is traveling. Is discharged. In this way, the discharged transported object 12 collides with the collision plate 13 and falls, and the stacking mountain 13a of the stacking mountain 13a to be formed is stacked in the stacking area of the stacking hill 13a in the traveling direction of the stacker 10. The attached layer 13b is formed. The height of the loading layer 13b is detected by a conventionally known contact type level detector (not shown) that is provided in a suspended state at the lower end of the collision plate 13 and can contact the surface of the loading pile. .

Here, the height of the loading layer 13b is measured at a preset interval (for example, every 5 to 10 minutes) by the above-described level detector, and the height of the loading layer 13b is set to a preset height. When it reaches, the loading of the conveyed product 12 is finished.
On the other hand, when the height of the loading layer 13b does not reach the preset height, the boom 11 is tilted upward, and the collision plate 13 is tilted by the tilting means 22 as necessary. The fall position of 12 is adjusted, and the conveyed product 12 is stacked.
The above-described method is repeated, and the conveyed product 12 is stacked in a plurality of layers on the stacking region to form a stacking mountain 13a including a plurality of stacking layers 13b to 13d.

In addition, when stacking the conveyed product 12 in a plurality of layers, the elevation angle of the boom 11 is adjusted for each layer. With this adjustment, the lower end position (height position and front-rear direction position) of the collision plate 13 is adjusted. The peak positions P1 to P3 of the stacked layers 13b to 13d are shifted when the stacked mountain 13a is viewed in plan. For this reason, the cylinder 23 is operated, the shift | offset | difference of the vertex positions P1-P3 of each stacked layer 13b-13d is suppressed, and the vertex positions P1-P3 are made to correspond.
Therefore, by using the stacker 10 according to the embodiment of the present invention, the displacement of the vertex positions P1 to P3 of the loading layers 13b to 13d constituting the loading mountain 13a can be suppressed. It is possible to stabilize the blending ratio of the conveyed product 12 constituting each of the stacked layers 13b to 13d to be paid out.

As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the configuration described in the above embodiment, and the matters described in the scope of claims. Other embodiments and modifications conceivable within the scope are also included. For example, the case where the stacker of the present invention is configured by combining a part or all of the above-described embodiments and modifications is also included in the scope of the right of the present invention.
Moreover, the conveyed product stacked | stacked with a stacker will not be specifically limited if powder, a grain, and a lump are included.

10: Stacker, 11: Boom, 12: Conveyed object, 13: Colliding plate, 13a: Mounted mountain, 13b to 13d ,: Loaded layer, 13e: Leveling yard, 14: Belt conveyor, 15: Head pulley, 16 : Belt, 17: mounting plate, 18: lower plate portion, 19: upper plate portion, 20: washing nozzle, 21: rib, 22: tilting means, 23: cylinder, 24: cylinder rod, 25: angle adjusting arm, 26 : Rotating shaft

Claims (2)

After discharging the transported material including powder, grains, and agglomerates from the tip of the boom provided so as to be able to be lifted, the transported material is placed on a collision plate provided at a distance from the tip of the boom. In a stacker that collides and drops, stacks in a mountain shape and forms a pile of piles,
The collision plate includes a lower plate portion positioned below a height position of a tip portion of the boom, and an upper plate portion connected to an upper end of the lower plate portion, and the upper plate portion is attached to the boom. Curved downward so as to cover the front of the tip, and the lower plate portion is in a state perpendicular to the horizontal direction when the elevation angle of the boom at the time of loading the transported object reaches a maximum. The stacker is connected to the lower end of the upper plate portion so that the collision plate is provided with tilting means for tilting the collision plate to adjust the dropping position of the conveyed product. 2. The stacker according to claim 1, wherein ribs are provided on both sides of the collision plate in the width direction so as to prevent spreading of the conveyed object that collides with the collision plate at the time of dropping. 3.

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