JP2020186096A - Chute device - Google Patents

Abstract

To provide a chute device which is included in a stacker, is more compact, and enables improvement of dust scattering prevention effect.SOLUTION: A chute device 3 includes: a chute 20 thorough which bulks dropping to a boom conveyor 4 pass; a skirt 26 which is disposed so as to enclose a periphery of the chute 20 and a periphery of an area of the boom conveyor 4, where the bulks drop from the chute 20, and links to the boom conveyor 4 to conduct elevating operation; and a slide lid 28 for closing a gap between the skirt 26 and the chute 20. The skirt 26 includes an opening 37a into which the chute 20 is inserted. The slide lid 28 slides in a longitudinal direction X of the boom conveyor 4 relative to the skirt 26 in conjunction with the skirt 26 conducting the elevating operation.SELECTED DRAWING: Figure 2

Description

The present invention relates to a chute device provided in a stacker.

Loose materials such as limestone, iron ore, and coal may be transported while being relayed by multiple conveyors. A stacker is known as a cargo handling machine for such transportation (see, for example, Patent Document 1). The stacker has a boom conveyor. The boom conveyor is configured to be capable of turning around a vertical axis and raising and lowering around a horizontal axis. This boom conveyor carries out the loose objects conveyed by the tripper conveyor from the tip of the boom conveyor to the yard.

The stacker described in Patent Document 1 is provided with a tripper chute and a skirt between the tripper conveyor and the boom conveyor.

The tripper chute is a tubular member, and forms a passage through which loose objects conveyed by the tripper conveyor fall. The skirt is installed on the boom conveyor side and surrounds the lower end of the tripper chute. The skirt is arched in lateral view. A seal cover member is arranged between the tripper chute and the skirt. This seal cover member is attached to the tripper chute. With this configuration, the skirt moves up and down with respect to the seal cover member as the boom conveyor moves up and down. As a result, the dust generated from the loose objects falling from the tripper chute is suppressed from being scattered by the skirt and the seal cover member.

Jikkai Sho 63-154544

Dust generated from loose objects due to falling of loose objects, etc., enters the gaps of the movable device and causes an obstacle in the operation of the device. Further, since the accumulation of dust leads to the corrosion of the structure, it is preferable that the amount of dust scattered is small. Here, in the configuration described in Patent Document 1, the skirt for preventing dust scattering requires a large installation space. Specifically, the skirt is formed in an arch shape centered on the horizontal axis, which is the center of elevation of the boom conveyor. Therefore, it is necessary to lengthen the arch-shaped portion (arc-shaped portion) of the skirt so as not to interfere with the up-and-down movement of the boom conveyor. As a result, the length occupied by the skirt in the vertical direction becomes long. Further, since the seal cover member is attached to the tripper chute, it is difficult to reduce the gap between the seal cover member and the skirt.

In view of the above circumstances, it is an object of the present invention to provide a chute device provided in a stacker, which is more compact and can have a higher dust scattering prevention effect.

The gist of the present invention is the following chute apparatus.

(1) A chute device provided on a stacker having a boom conveyor capable of raising and lowering as a swinging motion around a horizontal axis.
A chute through which loose objects falling onto the boom conveyor pass,
A skirt that is arranged so as to surround the chute and a portion of the boom conveyor where the loose objects fall from the chute, and that performs the up-and-down operation in conjunction with the boom conveyor.
A slide lid for closing the gap between the skirt and the chute,
With
The skirt includes an opening into which the chute is inserted.
The slide lid is configured to slide in the longitudinal direction of the boom conveyor with respect to the skirt as the skirt performs the up-and-down operation.

(2) The chute device according to (1), wherein the skirt and the slide lid extend linearly when viewed from a side view from a direction orthogonal to the longitudinal direction of the boom conveyor.

(3) The slide lid has an opening into which the chute is inserted.
The chute device according to (1) or (2), further comprising a flexible sealing member that seals between the opening of the slide lid and the outer peripheral portion of the chute.

(4) The chute device according to any one of (1) to (3), further comprising a centering mechanism for maintaining a constant position of the slide lid with respect to the chute in the longitudinal direction.

According to the present invention, the chute device provided in the stacker can be made more compact and have a higher dust scattering prevention effect.

FIG. 1 is a schematic side view of a stacker including a chute device according to an embodiment of the present invention. FIG. 2 is a schematic side view of the periphery of the chute device, showing a state in which the boom conveyor is tilted. FIG. 3 is a schematic side view of the periphery of the chute device, showing a state in which the boom conveyor is horizontal. FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. FIG. 5 is a view of the chute device in the longitudinal direction of the boom conveyor, and a part thereof is shown in cross section. FIG. 6 is an enlarged view of a part of FIG. FIG. 7 is an enlarged view of a part of FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

FIG. 1 is a schematic side view of a stacker 1 including a chute device 3 according to an embodiment of the present invention. FIG. 2 is a schematic side view of the periphery of the chute device 3, showing a state in which the boom conveyor 4 is tilted. FIG. 3 is a schematic side view of the periphery of the chute device 3, showing a state in which the boom conveyor 4 is horizontal. FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. FIG. 5 is a view of the chute device 3 viewed in the longitudinal direction X of the boom conveyor 4, and a part thereof is shown in a cross section. FIG. 6 is an enlarged view of a part of FIG. FIG. 7 is an enlarged view of a part of FIG.

With reference to FIGS. 1 to 7, the stacker 1 receives, for example, a loose object 100 carried from a carrier or the like to the tripper conveyor 2 via a ground conveyor or the like to the boom conveyor 4 by using the chute device 3. It is used to discharge the loose object 100 from the tip 4a of the boom conveyor 4 to the yard. The chute device 3 provided in the stacker 1 is not limited to the stacker, and may be applied to other cargo handling devices. Examples of the loose material 100 transported by the stacker 1 include massive limestone, iron ore, and coal.

The stacker 1 has a main frame 5, a tripper conveyor 2, a chute device 3, a boom conveyor 4, a boom 6, and a swivel floor 7.

The main frame 5 is formed of a steel material and a steel plate, and constitutes the skeleton of the stacker 1. A plurality of wheels 8 are attached to the lower end of the main frame 5. Each wheel 8 is mounted on a rail (not shown). With this configuration, the stacker 1 can reciprocate on the rail. A tripper conveyor 2 is arranged on the main frame 5.

The tripper conveyor 2 is a rubber belt on which a loose object 100 conveyed by a conveyor (not shown) can be placed. The tripper conveyor 2 receives the loose object 100 at a position on the rear end side of the main frame 5, and conveys the loose object 100 to the chute device 3. Then, the tripper conveyor 2 pays out the loose objects 100 to the head chute 21 described later of the chute device 3. The chute device 3 drops the loose object 100 onto the boom conveyor 4.

The boom conveyor 4 is an endless rubber belt, and conveys the loose object 100 from the base end 4b at the lower end of the chute device 3 to the tip 4a of the boom conveyor 4. The boom conveyor 4 is supported by a plurality of rollers 9, and is rotationally driven by the rotation of the drive rollers included in the plurality of rollers 9. The boom conveyor 4 is supported by rollers 9 so as to extend elongated in a predetermined longitudinal direction X.

In the following, the longitudinal direction X of the boom conveyor 4 is simply referred to as the longitudinal direction X. Further, the width direction Y orthogonal to the longitudinal direction X is simply referred to as the width direction Y. Further, the height direction Z orthogonal to the width direction Y is simply referred to as the height direction Z.

The roller 9 is supported by the boom 6 via a roller holder or the like. The boom 6 is a structure extending in the longitudinal direction X, and is formed of, for example, a steel material and a steel plate. In this embodiment, the boom 6 includes a truss structure. A chute device 3 is arranged at the base end of the boom 6 (base end 4b of the boom conveyor 4). Further, at the tip of the boom 6 (tip 4a of the boom conveyor 4), the loose object 100 is dropped from the boom conveyor 4 to the yard. The boom 6 is supported by the swivel floor 7.

The swivel floor 7 is a floor member capable of swiveling (swinging) around a predetermined vertical axis S1 with respect to the main frame 5. The swivel floor 7 is connected to a power source such as an electric motor or a diesel engine (not shown) so as to be able to transmit power, and receives power from the power source to swivel around the vertical shaft S1. The swivel floor 7 is supported by the main frame 5 via bearings (not shown). The swivel floor 7, the boom 6, and the boom conveyor 4 rotate integrally around the vertical axis S1.

The boom 6 and the boom conveyor 4 are configured to be capable of raising and lowering as a swinging motion around a predetermined horizontal axis 10 with respect to the swivel floor 7. Specifically, as is well shown in FIG. 5, the boom 6 is interposed via a pair of base blocks 11 and 11 arranged in the width direction Y and a pair of horizontal axes 10 and 10 arranged in the width direction Y. It is supported by the swivel floor 7 so that it can be moved up and down. The base blocks 11 and 11 are fixed to the swivel floor 7 and support the horizontal axes 10 and 10. The horizontal shafts 10 and 10 are connected to boom bottoms 6a and 6a as bottom portions of the boom 6, and support the boom 6 so as to be able to move up and down around the horizontal shafts 10 and 10.

With the above configuration, the swivel floor 7 swivels around the vertical axis S1 but does not move up and down. On the other hand, the boom 6 and the boom conveyor 4 perform a turning operation around the vertical axis S1 and a raising / lowering operation around the horizontal axes 10 and 10.

Next, a more specific configuration of the chute device 3 will be described.

As described above, the chute device 3 is provided to drop the loose object 100 conveyed by the tripper conveyor 2 to the vicinity of the base end 4b of the boom conveyor 4.

The chute device 3 includes a chute 20 including a head chute 21 and an intermediate chute 22, a turning seal member 23 for the intermediate chute 22, a head chute support 24, an intermediate chute support 25, a skirt 26, and a skirt support 27. The slide lid 28, the up / down seal member 29 for the slide lid 28, the guide mechanism 30 for the slide lid 28, and the centering mechanism 31 for the slide lid 28 are provided.

The chute 20 forms a passage through which the loose objects 100 falling from the tripper conveyor 2 to the boom conveyor 4 pass. The chute 20 is arranged at the upper part and the middle part of the chute device 3 in the height direction Z.

The head chute 21 is a tubular portion arranged at the upper end of the chute device 3. The head chute 21 is fixed to the main frame 5 by using a head chute support 24 which is desired to be formed by using a steel material or the like, and has a swivel operation around the vertical axis S1 and around 10 horizontal axes with respect to the main frame 5. Both elevation and elevation movements are regulated. A part of the side wall of the head chute 21 is cut out, and the tip of the tripper conveyor 2 is inserted into this cutout part. The upper end of the head chute 21 is formed in a cylindrical shape having a constant inner and outer diameters. The intermediate portion of the head chute 21 is formed in a tubular shape in which the opening area becomes smaller as it goes downward. The lower end portion 21a of the head chute 21 is formed in a cylindrical shape having a constant inner diameter and outer diameter. An intermediate chute 22 is fitted on the outer peripheral portion of the lower end portion 21a of the head chute 21.

The intermediate chute 22 is a cylindrical member, and the loose object 100 that has passed through the head chute 21 passes through the intermediate chute 22. In the present embodiment, the intermediate chute 22 is arranged on the outer peripheral side of the lower end portion 21a of the head chute 21 and surrounds the lower end portion 21a. While the intermediate chute 22 is configured to be able to turn, its elevation movement is restricted. The intermediate chute 22 is supported by an intermediate chute support 25 formed of a steel material or the like.

The intermediate chute support 25 enables the turning motion of the intermediate chute 22 around the vertical axis S1 (the turning motion of the intermediate chute 22), while restricting the raising and lowering motion of the intermediate chute 22 around the horizontal axis 10. Specifically, the intermediate chute support 25 includes a plurality of beams 32 fixed to the outer peripheral portion of the intermediate chute 22 and arranged in the width direction Y, and a plurality of pillars 33 extending downward from the corresponding beams 32 and fixed to the swivel floor 7. And have. The intermediate chute 22 is fitted with the lower end portion 21a of the head chute 21 with a gap by the intermediate chute support 25 having the above configuration. A swivel seal member 23 is arranged between the inner peripheral surface of the intermediate chute 22 and the outer peripheral surface of the head chute 21.

The swivel seal member 23 is formed by using a flexible (elastic) material such as natural rubber or synthetic rubber. The turning seal member 23 seals between the inner peripheral surface of the intermediate chute 22 and the outer peripheral surface of the lower end portion 21a of the head chute 21. In the present embodiment, the swivel seal member 23 is formed in the form of a flat sheet. In the present embodiment, the swivel seal member 23 is attached to the intermediate chute 22 and slides with respect to the lower end portion 21a of the head chute 21 as the intermediate chute 22 swivels. More specifically, the swivel seal member 23 is formed in an annular shape, and the outer peripheral portion is fixed to the upper end portion of the intermediate chute 22 by using a fastening member such as a bolt and a nut. The outer peripheral portion of the swivel seal member 23 covers the outer peripheral surface of the intermediate chute 22 over the entire circumference. Further, the inner peripheral portion of the turning seal member 23 functions as a lip and is in contact with the outer peripheral surface of the lower end portion 21a of the head chute 21 over the entire circumference. With this configuration, dust is suppressed from scattering from the gap between the head chute 21 and the intermediate chute 22.

In the present embodiment, the configuration in which the swivel seal member 23 is attached to the intermediate chute 22 is described as an example, but this may not be the case. For example, the swivel seal member 23 may be attached to the head chute 21, and the intermediate chute 22 and the swivel seal member 23 may be slidably contacted around the vertical axis S1. A skirt 26 is arranged below the intermediate chute 22.

The skirt 26 is arranged so as to surround the intermediate chute 22 and the fall area 34 in which the loose objects 100 fall from the intermediate chute 22 of the boom conveyor 4, and swings and raises and lowers in conjunction with the boom conveyor 4. Do the action. As a result, the skirt 26 suppresses dust from the loose object 100 that has fallen into the fall area 34 from scattering to the outside of the skirt 26. The skirt 26 is arranged directly above the boom conveyor 4 in the vicinity of the base end 4b of the boom conveyor 4.

In the present embodiment, the skirt 26 is formed in a shape elongated in the longitudinal direction X, and at least a portion into which the intermediate chute 22 is inserted has a shape open in the height direction Z. More specifically, in the side view (viewed from the width direction Y orthogonal to the longitudinal direction X), the skirt 26 extends linearly in the longitudinal direction X and does not undulate in the height direction Z. That is, the upper end edge portion and the lower end edge portion of the skirt 26 extend parallel to or substantially parallel to the longitudinal direction X, and the position in the height direction Z is constant.

The skirt 26 has a pair of side walls 35, 36 arranged symmetrically in the width direction Y when viewed from the longitudinal direction X, and a top wall 37 provided at the upper end of the pair of side walls 35, 36. There is.

The pair of side walls 35 and 36 extend downward from a position higher than the position of the lower end surface of the intermediate chute 22 in the height direction Z, and the lower ends of the pair of side walls 35 and 36 are close to the boom conveyor 4. Have been placed. The distance between the lower ends of the pair of side walls 35 and 36 and the boom conveyor 4 is appropriately set according to the amount of loose objects 100 transported per unit time and the like. When viewed in the longitudinal direction X, the upper half portions 35a, 36a of the pair of side walls 35, 36 are formed in a tapered shape in which the distance between the pair of side walls 35, 36 becomes narrower as the distance from each other decreases downward. The upper half portions 35a and 36a of the pair of side walls 35 and 36 are arranged so as to sandwich the lower end portion 22a of the intermediate chute 22. On the other hand, when viewed in the longitudinal direction X, the lower half portions 35b and 36b of the pair of side walls 35 and 36 have a constant distance from each other. In the present embodiment, the intermediate chute 22 is not arranged between the lower half portions 35b and 36b. In the longitudinal direction X, the pair of side walls 35 and 36 extend from a position near the base end 4b of the boom conveyor 4 to a position closer to the tip 4a of the boom conveyor 4 than the position of the head chute 21.

The top wall 37 is formed at the upper ends of the upper half portions 35a and 36a and extends in the longitudinal direction X, and is arranged over the entire area of the pair of side walls 35 and 36 in the longitudinal direction X. At both ends of the skirt 26 in the longitudinal direction X, end walls that close the space ends in the skirt 26 in the longitudinal direction X may or may not be provided. The top wall 37 is provided with a through hole that penetrates the top wall 37 in the height direction Z, so that an opening 37a is formed. The lower end 22a of the intermediate chute 22 is inserted into the opening 37a, and the loose object 100 passes through the opening 37a. In the present embodiment, the opening 37a is formed in a rectangular shape elongated in the longitudinal direction X in a plan view (viewed from the height direction Z). The opening 37a is an opening through which the loose object 100 falls and the slide lid 28 is placed along the opening. The length of the opening 37a is set in the longitudinal direction X so as to allow the relative movement of the skirt 26 and the intermediate chute 22 due to the up-and-down movement of the boom conveyor 4. More specifically, the length of the opening 37a in the longitudinal direction X is set to be larger than the outer diameter of the lower end 22a of the intermediate chute 22. The skirt 26 having the above configuration is supported by the skirt support 27.

The skirt support 27 supports the skirt 26 so that the skirt 26 can rotate around the vertical axis S1 and the skirt 26 can move up and down around the horizontal axis 10. Specifically, the skirt support 27 is fixed to the upper half portions 35a, 36a of the pair of side walls 35, 36 of the skirt 26, and a plurality of beams 38 arranged in the width direction Y and the longitudinal direction X, and downward from the corresponding beams 38. It also has a pair of pillars 39 supported by the boom 6 so as to swing around the horizontal axis 10. A slide lid 28 is arranged above the skirt 26 and the skirt support 27.

The slide lid 28 is provided to close the gap between the opening 37a of the skirt 26 and the outer peripheral portion of the intermediate chute 22. The slide lid 28 is arranged around the intermediate chute 22. The slide lid 28 is configured to slide straight in the longitudinal direction X with respect to the skirt 26 as the skirt 26 moves up and down. The slide lid 28 is arranged so as to cover the opening 37a of the skirt 26 from above. The slide lid 28 is arranged so as to surround the outer peripheral portion of the intermediate chute 22, and is formed in a flat plate shape extending in the longitudinal direction X. The slide lid 28 runs along the opening 37a of the top wall 37 of the skirt 26. In the side view, the slide lid 28 is formed in a straight line extending in the longitudinal direction X, and in the plan view, it is formed in a rectangular shape so as to cover at least a part of the top wall 37 of the skirt 26. An opening 28a is formed in the slide lid 28. The opening 28a is an opening into which the intermediate chute 22 is inserted, and is formed in a rectangular or circular shape in a plan view and surrounds the outer peripheral portion of the intermediate chute 22. The centering mechanism 31 regulates the slide lid 28 from moving relative to the intermediate chute 22 in the longitudinal direction X. Therefore, the opening 28a of the slide lid 28 has a gap between the slide lid 28 and the intermediate chute 22 as small as possible. A seal member 29 for raising and lowering is arranged between the opening 28a of the slide lid 28 and the outer peripheral portion of the lower end 22a of the intermediate chute 22.

The up / down seal member 29 is formed by using a flexible (elastic) material such as natural rubber or synthetic rubber. The up / down seal member 29 seals between the opening 28a of the slide lid 28 and the outer peripheral surface of the lower end 22a of the intermediate chute 22. In the present embodiment, the up / down seal member 29 is attached to the slide lid 28 and slides with respect to the outer peripheral surface of the intermediate chute 22 as the slide lid 28 moves up / down with respect to the intermediate chute 22. More specifically, the up / down seal member 29 is formed in an annular shape, a rectangular ring shape, or the like according to the shape of the opening 28a, and the outer peripheral portion is fixed to the upper portion of the slide lid 28. The up / down seal member 29 closes the space between the opening 28a of the slide lid 28 and the outer peripheral surface of the intermediate chute 22 over the entire circumference except for the portion where the vertical rail 54 described later of the centering mechanism 31 is arranged. It may be good, or only a part may be blocked. The inner peripheral portion of the up / down seal member 29 functions as a lip and is in contact with the outer peripheral surface of the intermediate chute 22. With this configuration, dust is suppressed from being scattered from the gap between the opening 28a of the slide lid 28 and the intermediate chute 22.

In the present embodiment, the configuration in which the up / down seal member 29 is attached to the slide lid 28 is described as an example, but this may not be the case. For example, the depression / elevation seal member 29 may be attached to the intermediate chute 22, and the slide lid 28 and the depression / elevation seal member 29 may be slidably brought into contact with each other.

Next, the configurations of the guide mechanism 30 and the centering mechanism 31 as a mechanism for defining the operation of the slide lid 28 will be described.

The guide mechanism 30 is a mechanism for smoothly moving the skirt 26 and the slide lid 28 relative to each other in the longitudinal direction X as the skirt 26 and the slide lid 28 move up and down with respect to the intermediate chute 22. In this embodiment, the guide mechanism 30 is arranged at both ends of the skirt 26 in the width direction Y. The guide mechanism 30 is a rail type mechanism.

The guide mechanism 30 includes, for example, a pair of first stays 41, 41 formed in an L shape and fixed to the slide lid 28, and a pair of first stays 41 attached to the corresponding first stay 41 using a first bolt 42 or the like. It has one roller 43, 43 and a pair of horizontal rails 44, 44 provided as a rolling track for the corresponding first roller 43 and fixed to a skirt support 27.

The first stays 41 are arranged at both ends of the slide lid 28 in the width direction Y, and are provided at a plurality of places (4 places in the present embodiment, a total of 8 places) at intervals in the longitudinal direction X. The first roller 43 is rotatable around an axis (first bolt 42) parallel to the horizontal axis 10. Each first roller 43 is formed with an annular and V-shaped cross-section groove, and the groove is fitted in the horizontal rail 44. The lateral rail 44 is fixed to the beam 38 of the skirt support 27 on the side of the skirt 26 and is supported in an upward posture. The lateral rail 44 extends straight in the longitudinal direction X, and allows the first roller 43 to roll as the skirt 26 and the slide lid 28 move up and down.

As described above, the centering mechanism 31 is provided to keep the position of the slide lid 28 with respect to the chute 20 constant in the longitudinal direction X. The centering mechanism 31 is arranged at the center of the intermediate chute 22 in the longitudinal direction X. Further, the centering mechanism 31 is arranged so as to avoid the place where the first roller 43 is arranged.

The centering mechanism 31 includes a pair of second stays 51, 51 fixed to the slide lid 28, and a pair of second rollers 53, 53 attached to the corresponding second stay 51 using a second bolt 52 or the like. The corresponding second roller 53 is provided as a rolling track and has a pair of vertical rails 54 and 54 fixed to the outer peripheral surface of the intermediate chute 22.

The second stay 51 is arranged near the opening 28a of the slide lid 28 in the width direction Y. The second roller 53 is rotatable around an axis (second bolt 52) parallel to the horizontal axis 10. Each second roller 53 fits into the corresponding vertical rail 54. The vertical rail 54 is fixed to the intermediate chute 22 at both ends of the intermediate chute 22 in the width direction Y and extends in the height direction Z. In the present embodiment, each vertical rail 54 is formed by using a pair of plate-shaped members arranged in the longitudinal direction X, and a second roller 53 is fitted between the pair of plate-shaped members. The vertical rail 54 allows the second roller 53 to roll as the skirt 26 and the slide lid 28 move up and down.

The above is the schematic configuration of the stacker 1.

In the stacker 1 described above, when the boom conveyor 4, the skirt support 27, the skirt 26, and the slide lid 28 perform the depression / elevation movement around the horizontal axis 10 by the depression / elevation movement of the boom 6, the slide lid 28 is moved with respect to the skirt 26. Move in the longitudinal direction X. At this time, the first roller 43 of the guide mechanism 30 rolls on the horizontal rail 44. Then, the slide lid 28 slides in the longitudinal direction X while maintaining the state of closing the opening 37a of the skirt 26. Along with the sliding operation of the slide lid 28, the second roller 53 is guided by the vertical rail 54 and changes its position in the height direction Z with respect to the intermediate chute 22, but is received by the vertical rail 54 and moves in the longitudinal direction X. Does not move. That is, the slide lid 28 to which the second roller 53 is attached does not move in the longitudinal direction X with respect to the intermediate chute 22.

As described above, according to the present embodiment, the provision of the slide lid 28 can prevent dust from the loose object 100 from scattering from between the skirt 26 and the intermediate chute 22. Further, the slide lid 28 slides with respect to the skirt 26 in the longitudinal direction X of the boom conveyor 4 as the skirt 26 moves up and down. According to this configuration, the slide lid 28 moves in a small amount in the height direction Z orthogonal to the longitudinal direction X during the depression / elevation operation. For example, in the case of an arch-shaped lid having the horizontal axis 10 as the center of curvature, the lid moves significantly in the height direction as it moves up and down. In this way, by setting the moving direction of the slide lid 28 accompanying the elevation operation to the longitudinal direction X, the amount of movement of the slide lid 28 in the height direction Z can be reduced, so that the installation space of the slide lid 28 can be reduced. Moreover, since it is not necessary to form the slide lid 28 in an arch shape having the horizontal axis 10 as the center of curvature, the lengths of the slide lid 28 and the skirt 26 in the height direction Z can be shortened. Therefore, a more compact chute device 3 can be realized. Further, since the total length of the chute device 3 in the height direction Z can be shortened, the falling distance of the loose object 100 falling from the tripper conveyor 2 to the boom conveyor 4 can be further shortened. As a result, the impact applied to the loose object 100 can be made smaller, so that the generation of dust itself from the loose object 100 can be suppressed. Further, since the height from the ground to the head chute 21 can be made shorter, the lift of the loose object 100 from the ground to the head chute 21 can be made smaller. As a result, the inclination angle of the tripper conveyor 2 can be made smaller, so that the tripper conveyor 2 can be in a more horizontal posture. Therefore, the amount of loose objects 100 that can be placed on the tripper conveyor 2 at one time can be increased. That is, it is possible to improve the transport capacity of the stacker 1.

Further, according to the present embodiment, the skirt 26 and the slide lid 28 extend linearly along the longitudinal direction X in the side view seen from the width direction Y orthogonal to the longitudinal direction X of the boom conveyor 4. According to this configuration, the space occupied in the height direction Z and the movable range in the height direction Z of the skirt 26 and the slide lid 28 can be made smaller.

Further, according to the present embodiment, a flexible up / down seal member 29 is provided to seal between the opening 28a of the slide lid 28 and the outer peripheral portion of the chute 20. According to this configuration, as a result of the movable amount of the skirt 26 and the slide lid 28 being made smaller, the gap that the up / down sealing member 29 must seal can also be made smaller. As a result, the degree to which the dust of the loose object 100 is scattered can be reduced.

Further, according to the present embodiment, the centering mechanism 31 keeps the position of the slide lid 28 with respect to the intermediate chute 22 constant with respect to the longitudinal direction X. According to this configuration, the slide lid 28 can be made substantially immobile with respect to the intermediate chute 22 in the longitudinal direction X. As a result, the gap required to be sealed by the up / down seal member 29 can be made smaller. Further, the movable range of the slide lid 28 can be further limited.

Further, according to the present embodiment, both the turning motion and the raising / lowering motion of the head chute 21 are regulated, while the intermediate chute 22 is configured to be capable of turning and the raising / lowering motion is regulated. Further, the skirt 26 is arranged so as to surround the intermediate chute 22 and the circumference of the drop area 34 in which the loose object 100 falls from the intermediate chute 22 of the boom conveyor 4, and is interlocked with the boom conveyor 4. Performs up and down movements. According to this configuration, the head chute 21 and the intermediate chute 22 rotate relative to each other, but do not have a configuration in which they are relatively raised around the horizontal axis 10. As a result, the swivel seal member 23 only needs to allow relative swivel between the head chute 21 and the intermediate chute 22, so that the swivel seal member 23 can be made into a small shape.

Further, according to the present embodiment, with respect to the opening 37a of the skirt 26, the up / down seal member 29 is arranged between the intermediate chute 22 and the slide lid 28. According to this configuration, the slide lid 28 performs an up-and-down operation with respect to the intermediate chute 22, but does not perform a sliding operation in the longitudinal direction X. Therefore, the range in which the up / down seal member 29 must be sealed can be made smaller. As a result, the up / down seal member 29 can be made smaller.

Further, according to the present embodiment, the intermediate chute 22 is fitted on the outer peripheral portion of the head chute 21, and the slide lid 28 is arranged so as to surround the outer peripheral portion of the intermediate chute 22. According to this configuration, in the chute 20, the lower member is arranged on the outer peripheral side, so that the configuration can be made simpler. In addition, the small shape of the swivel seal member 23 and the up / down seal member 29 can more effectively suppress the scattering of dust from the chute device 3.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. The present invention can be modified in various ways as long as it is described in the claims.

The present invention can be widely applied as a stacker.

1 Stacker 3 Chute device 4 Boom conveyor 10 Horizontal axis 20 Chute 26 Skirt 28 Slide lid 28a Slide lid opening 29 Depression seal member (flexible seal member between the opening of the slide lid and the outer periphery of the chute Seal member)
31 Centering mechanism 37a Skirt opening 100 Loose X Longitudinal direction

Claims (4)

It is a chute device provided in a stacker having a boom conveyor capable of raising and lowering as a swinging motion around a horizontal axis.
A chute through which loose objects falling onto the boom conveyor pass,
A skirt that is arranged so as to surround the chute and a portion of the boom conveyor where the loose objects fall from the chute, and that performs the up-and-down operation in conjunction with the boom conveyor.
A slide lid for closing the gap between the skirt and the chute,
With
The skirt includes an opening into which the chute is inserted.
The slide lid is a chute device configured to slide in the longitudinal direction of the boom conveyor with respect to the skirt as the skirt performs the elevation operation. The chute device according to claim 1, wherein the skirt and the slide lid extend linearly when viewed from a side view from a direction orthogonal to the longitudinal direction of the boom conveyor. The slide lid has an opening into which the chute is inserted.
The chute device according to claim 1 or 2, further comprising a flexible sealing member for sealing between the opening of the slide lid and the outer peripheral portion of the chute. The chute device according to any one of claims 1 to 3, further comprising a centering mechanism for maintaining a constant position of the slide lid with respect to the chute in the longitudinal direction.

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