JPH0829836B2 - Conveyance drop controller for reverse shuttle conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial Field of Application >> The present invention conveys a conveyed product in a hopper in a direction in which the reverse shuttle conveyor moves when the conveyed product is temporarily stored in a hopper or the like in which the conveyed product is conveyed by a reverse shuttle conveyor. The present invention relates to an apparatus for preventing a substance from accumulating in a mountain shape and causing particle size segregation.

<Prior art> When a conveyed product is stored in a hopper by a reverse shuttle conveyor, the central part of the hopper becomes heaped and piles up in a mountain shape.

In order to solidify the sintering raw material with the sintering machine, the sintering raw material is conveyed by the reverse shuttle conveyor, temporarily stored in the surge hopper in front of the charging machine, and provided with a roll feeder orthogonal to the moving direction of the reverse shuttle conveyor. , This roll feeder puts it on the sinter machine pallet, but since the stored raw material has a mountain-shaped surface as described above, relatively coarse raw material rolls on both sides of the surge hopper, Grains are concentrated in the central part. Therefore, the raw material in the surge hopper has a coarse particle size distribution in the side wall and a large number of fine particles in the central part, and is charged into the sintering pallet while keeping the segregation as it is in the width direction.

<< Problems to be Solved by the Invention >> A large amount of coarse particles are accumulated on the side wall of the surge hopper facing the moving direction of the reverse shuttle conveyor.

Since the particles are cut into the pallet of the sintering machine while segregated, the coarse particles are increased on both sides of the pallet. In the process of firing the sintering raw material, coarse particles are gathered at both end portions of the pallet, which originally has large air permeability, and the air permeability is further increased. On the other hand, fine particles were concentrated in the central part where the air permeability was originally low, and the air permeability became worse. For this reason, both ends of the pallet became brittle sinter with insufficient heat, and the central part left unburned parts in the lower layer, resulting in a decrease in yield.

<< Means for Solving the Problems >> In order to solve the problems described above, the present inventors have optimized the particle size segregation of the raw material charged in the surge hopper.

More specifically, the conveyance of the reverse shuttle conveyor including a reflection plate pivotally attached to the exterior frame of the discharge side of the reverse shuttle conveyor and tilting means for tilting the reflection plate into the falling trajectory of the conveyed object falling from the conveyor. In the object falling control device, the tilting means is composed of a weight suspended by a wire connected to an eccentric position of the reflection plate, and the weight has a cylindrical body and a plurality of vertically projecting steps inside the cylindrical body. Is
A shelf with the amount of protrusion gradually increasing toward the bottom,
Each shelf is attached to the shelf above it so that it can pass through, and it consists of a weight with a hole for passing wires in the center,
The other end of the wire, one end of which is connected to the reflector, descends when the reverse shuttle conveyor is going forward, and rises when returning,
By lifting the weights in sequence during the ascent, and tilting the reflecting plate within the above-mentioned drop trajectory due to the increase in tension, only the raw material of coarse particles is not deposited on the side wall facing the conveyor moving direction in the surge hopper. The problem was solved by depositing coarse particles in the center and fine particles in the side wall.

<Example> An example of the present invention will be described with reference to the drawings.

A sintering surge hopper 1 is provided on a roll feeder 13 for charging raw materials into a sintering pallet 14 of a sintering machine. A reverse shuttle conveyor 3 for charging the sintering raw material 2 into the surge hopper 1 is provided on the surge hopper 1. A tiltable reflection plate 7 is attached to the exterior frame 4 of the material discharge side head drum 12 of the reverse shuttle conveyor 3 to change the trajectory of the material falling. The plate width of the reflection plate 7 is substantially equal to the belt width of the reverse shuttle conveyor 3. In order to tilt the reflecting plate 7, the lower portion of the exterior frame 4 on the discharge side is extended and a tilting shaft 6 is provided at this portion, and a shaft 8 provided above the reflecting plate is supported on the tilting shaft 6. Further, an arm 5 is provided on the reflection plate 7, one end of a wire 9 is connected to the arm 5, the wire is extended in parallel to the forward side of the conveyor 3, that is, the front side of the raw material discharge side, and a weight 11 is provided at the other end. ing.

This weight 11 is, as shown in FIG.
Cylinder 16 with 5, 15 ', 15 "vertically arranged in multiple stages and projecting downwardly with a gradually increasing protrusion amount, and a rack 15 from the lower shelf 15 are hooked in order on each shelf and mounted upwards. A ring-shaped weight 17, 17 ', 17 "having a gradually increasing diameter, and a disk 18 fixed to the wire end passed through each weight, and the reverse shuttle conveyor 3 is mounted on the surge hopper 1 as shown in FIG. When the wire 9 is pulled up by pulling backwards to the left of, the disk 18 first raises the weight 17, and when the wire is further pulled up, the weight 17 and the weight 17 'are moved to the weight 17, the weight 17
The 17 'and the weight 17 "are lifted in order, and as the wire 9 is pulled up by the movement of the conveyor, the tension applied to the wire 9 gradually increases and the lower end side of the reflection plate 7 gradually tilts so as to prevent the natural fall of the raw material. Then, as the inclination angle of the reflection plate 7 increases, the raw material falling from the conveyor 3 falls on the wall side, whereby coarse particles roll and collect in the central portion of the surge hopper 1.

When the conveyor 3 moves forward to the right in FIG. 2, the inclination angle of the reflection plate 7 gradually decreases and returns to the original position.

In this embodiment, in order to tilt the reflection plate 7 with the movement of the conveyor 3, the tilt is changed by increasing or decreasing the weight of the weight. However, a deceleration motor is directly connected to the tilting shaft 6 and interlocks with the conveyor 3. The structure may be such that a desired inclination is obtained, and the position of the weight may be changed. Further, the deposition shape of the raw material in the hopper can be freely changed by controlling the moving speed of the shuttle conveyor. A spring spring may be used instead of the weight.

The movement of the reverse shuttle conveyor and the state of raw material deposition in the surge hopper when the control device having the above structure is used will be described.

The reverse shuttle conveyor 3 charges the raw material 2 into the surge hopper 1 while repeating forward and backward movements.

In the drawing, the movement of the reverse shuttle conveyor due to forward and backward movements, the state of the weight, the inclination of the reflection plate 7 and the trail of dropping of the raw material accompanying it are represented by symbols a to f, and the same symbols correspond to the same operating state. There is.

When the reverse shuttle conveyor 3 is at the forward side, that is, at the position a, the wire 9 connected to the arm 5 relaxes,
The disk 18 is below the weight 17 and the weight 11 is on the floor 10. At this time, the reflection plate 7 droops almost vertically, and the raw material 2
Does not hit the reflection plate 7 and falls into the surge hopper while drawing a fall trajectory of a. Therefore, the raw material 2 rolls from the right wall of the surge hopper 1 toward the central portion. The reverse shuttle conveyor 3 moves backward from the position of the forward limit a, but c
No tension is applied to the wire 9 up to the position, so that the reflection plate 7 remains vertical and neither the raw material dropping locus nor the change occurs.

However, when the reverse shuttle conveyor 3 further retracts from c and goes to the position of d, the disk 18 lifts the weight 17 and tension is applied to the wire 9, and when the reverse shuttle conveyor 3 reaches e, Weight 17 '
However, when the conveyor 3 reaches the position f, the weight 17 ″ is lifted up, and the tension of the wire 9 gradually increases. As a result, the reflecting plate 7 draws a clockwise path and the tilting angle increases, and Along with this, the raw material 2 comes into contact with the reflection plate 7 and is reflected to form a drop trajectory toward the left side wall of the hopper 1. Therefore, at the positions d to f on the reverse side of the central portion of the hopper 1, the reverse shuttle conveyor 3 is the raw material. Is hopper 1
Roll toward the center from the left wall.

When the reverse shuttle conveyor moves to the right from the center of the surge hopper, the raw material 2 is rolled from the right wall to the center at the positions a to c, and is rolled to the center from the left wall at the positions d to f so as to move to the center. It is possible to obtain a raw material in which the number of coarse particles is large and the number of fine particles on the wall is large and the particle size segregates.

Also, when considering the type of raw material and the amount of transportation, the angle of inclination of the reflector may be changed to a constant angle on the backward side of the reverse shuttle conveyor.In that case, the weight of the weight should be constant. You may make it a different structure.

Fig. 3 shows the results of investigating the particle size of the raw material in the surge hopper using the above-mentioned device. Conventionally, a large number of coarse particles are particularly left on the left side of the central part of the surge hopper, that is, on the side of the reverse shuttle conveyor rearward wall. Although the raw material contained, the method of the present invention could improve the particle size segregation.

As a result, the air permeability is suppressed on both sides of the sinter machine pallet with high air permeability, and conversely the air permeability of the central portion with low air permeability is promoted. As a result, the air permeability in the pallet width direction was made uniform, and the shutter index (SI), which is an indicator of the strength quality of the sinter, showed a tendency to be homogenized in the pallet width direction, and the strength also increased.

<< Effects >> By loading the raw material into the surge hopper using this device, the raw material containing a large amount of coarse particles can be deposited in the center of the surge hopper, and conversely, the raw material containing a large amount of coarse particles on the wall side. As a result, the air permeability of both ends and the center of the pallet can be improved when the sinter hopper is charged into the sintering pallet and sintered. This improves the yield of the sintered ore.

Also, in the case where the tilting means of the reflection plate is connected to the reflection plate via a wire, the length of the wire may be changed,
By changing the direction using the guide pulley, it is possible to bring the tilting device to a desired position that does not interfere with other equipment or work. Alternatively, it is possible to gradually increase the tilt angle of the reflection plate by applying a gradually larger force to pull up the wire by using a spiral spring, and in the case where the tilting means is a weight,
By changing the number of weights and weight, it is possible to change the tilt start position and tilt angle of the tilting plate.

In the case of using a motor as the driving means,
The tilt start position and tilt angle of the tilting plate can be arbitrarily adjusted.

[Brief description of drawings]

FIG. 1 is a perspective view for explaining an apparatus according to the present invention, FIG. 2 is a view for explaining a tilting angle of a reflecting plate and a falling state of raw materials when a reverse shuttle conveyor moves forward and backward on a hopper, and FIG. FIG. 3 is a diagram illustrating a raw material particle size configuration in a surge hopper in a reverse shuttle conveyor moving direction. Fourth
The figure is a view for explaining the sintered ore SI in the width direction of the sintering pallet of the sintering machine. 1 …… Surge hopper 2 …… Raw material 3 …… Reverse shuttle conveyor 4 …… Exterior frame 5 …… Arm 6 …… Tilt axis 7 …… Reflector 8 …… Axis 9 …… Wire 10 …… Floor 11 …… Weight 12 …… Head drum 13 …… Roll feeder 14 …… Pallet

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Nobuhiko Hiiragi 11-11 Showa-cho, Kure-shi, Hiroshima Nisshin Steel Co., Ltd. Kure Steel Works (72) Inventor Takahiro Horie 11-11 Showa-cho, Kure-shi, Hiroshima Japan Kure Works Co., Ltd., a new steel company (56) References: Showa 52-128602 (JP, U) Showa 58-12534 (JP, U)

Claims (3)

[Claims] 1. A reverse shuttle conveyor comprising: a reflector plate tiltably attached to a discharge side exterior frame of the reverse shuttle conveyor; and tilting means for tilting the reflector plate into a falling trajectory of a conveyed object falling from the conveyor. In the transported object drop control device, the tilting means is composed of a weight suspended from a wire connected to the eccentric position of the reflection plate, and the weight has a tubular body and a plurality of vertically projecting steps inside the tubular body. It is made up of shelves that are installed and gradually increase in the amount of protrusion as they go downward, and weights that are attached to each of the shelves so that they can pass through to the upper shelves and that have a hole for passing the wire in the center The other end of the wire connected to the plate descends when the reverse shuttle conveys in the forward direction and rises when returning, and the weights are sequentially lifted during the ascent, and the reflector plate is tilted into the above-mentioned fall trajectory due to the increase in tension. Conveyed fall control device for reverse shuttle conveyor to. 2. A spiral spring for winding a wire is provided in place of the weight, the wire is wound by the spiral spring when the reverse shuttle conveyor goes forward, and the wire is pulled out from the spring when returning, and the reflection plate is increased due to an increase in tension. 2. The conveyed object drop control device for a reverse shuttle conveyor according to claim 1, wherein the device is tilted within the drop locus. 3. A reverse shuttle conveyor comprising: a reflecting plate pivotally mounted on a discharge side exterior frame of the reverse shuttle conveyor; and a tilting means for tilting the reflecting plate into a falling locus of a conveyed article falling from the conveyor. In the transported object drop control device, the tilting means is retracted from the above-mentioned drop trajectory when the reverse shuttle conveyor is moving forward, and is conveyed by a motor that tilts the reflection plate so as to enter the above-mentioned drop trajectory when returning. Object drop control device.