JPS62126011A - Method of discharging bulk cargo in chain type bucket conveyer of continuous unloader, and device therefor - Google Patents

Abstract

PURPOSE:To prevent bulk cargo from dropping, by providing such an arrangement that a bride plate or a flexible guide blade is disposed between each adjacent buckets which are engaged with an upper sprocket so that bulk cargo in the rear bucket is discharged through the rear surface of the front bucket. CONSTITUTION:A bridge plate 10 is connected to the bottom surface 1a of each bucket 1 at the forward end in the rotating direction, by means of a pin 11, and the trailing end of the bridge plate is urged by a tension spring 14. Further, the front end of the bridge plate 10 is pressed against the rear surface 1b of the another bucket 1 in front thereof. With this arrangement it is possible to bridge the gap between each adjacent buckets 1, 1 with the bridge plate 10. Thereby, it is possible to prevent bulk cargo from dropping.

Description

DETAILED DESCRIPTION OF THE INVENTION (Related Technical Field) The present invention relates to a method and apparatus for discharging bulk material from a chain bucket in a continuous unloader.

(Prior art) If bulk cargo is discharged from buckets that are attached to a chain intermittently, the cargo will spill between the buckets and the cargo will not be able to be transported downstream unless something is done.

FIG. 12 shows one method for solving this problem. That is, a is a chain, and b is a bucket attached to the chain. A bucket C is attached to the receiver between the buckets 5 to prevent bulk materials from spilling. As is clear from the figure, only four buckets b are entangled with sprocket d. In this case, when the distance between buckets b is large, the bucket method is effective, but bucket b If the distance between the sprocket and the bucket b is short, that is, if as many as 10 buckets are entwined with one sprocket, the bucket method cannot be used.

(Problems to be Solved by the Invention) It is an object of the invention to provide a bulk material discharge device that can be used even when a large number of buckets are entangled with one sprocket and is structurally simple.

(Means for Solving the Invention) A bridge is provided between the buckets that are entangled with the upper sprocket and adjacent to each other, so that the bulk material in the buckets is discharged through the back surface of the bucket on the forward side in the rotational direction.

In addition, flexible guide vanes are attached to the surface of the bucket internal drum via fittings so as to be located between the buckets attached to the chain, so that when the bulk material is discharged, the guide vanes are The weight of the bulk cargo presses against the back of the front bucket, forming a bridge between the front and rear buckets.

Furthermore, a chute plate is installed between the bottom wall surface of the bucket spanning between the chain links and the bottom wall surface or back wall surface of the adjacent front bucket, which allows the buckets to tilt relative to each other. A bridge between buckets was configured.

(Example of providing a bridge on a drum) Figures 1 to 2
In the figure, 1 is a bucket attached to a chain 2. The chain 2 is wrapped around the upper sprocket wheel 3. Reference numeral 4 denotes a drum for internally enclosing the bucket, and is located between sprocket wheels 3.3, and is fixed to the shaft 5.

As shown in FIG. 3, rubber guide vanes 7 are attached to the circumferential surface of the drum 4 at a pitch equal to the pitch of the buckets 1 via iron fixtures 6.

In the case of Fig. 4, the guide vane 7' is made of iron, and its mounting bracket 6
' is made of rubber and has flexibility as a whole.

(Function) 1) As shown in Figure 3, bucket 1 is connected to sprocket wheel 3.
When the bucket reaches the top and rotates under the weight of the bucket to release it, the flexible guide vanes 7 automatically fall forward under the weight of the bulk material 8 and come into close contact with the back of the bucket in front of it. Therefore, there is no gap between the buckets,
Load spillage is prevented.

In the case of Fig. 4, the guide vane 7' is not flexible, but since the fixture 6' is flexible, the guide vane 7' is attached to the back of the front bucket as in the case of Fig. 3. This prevents cargo from spilling.

2) When the bucket rotates and reaches the bottom of the sprocket wheel, the movement of bucket 1 changes from circular motion to linear motion. At this time, guide vane 7. Or, as shown in FIG. 5, 7' moves as if being pushed away by the back surface of the lower bucket 1. For this reason, if the guide vanes were not flexible, they would interfere with the back surface of the bucket, but due to the flexibility of the guide vanes, there is no problem of interference and the guide vanes move away smoothly.

(Embodiment where a bridge is provided between buckets) The examples shown in FIGS. 6 to 11 do not provide a bridge on the drum side like the above-mentioned embodiments, but instead provide a bridge between adjacent buckets. This is an example of the configuration.

In FIG. 6, 9 is a chain link, and the bucket 1 is pivotally mounted between these links. Reference numeral 10 denotes a bridging plate, which is connected at one end to the bottom wall surface 1a of the bucket at the front in the rotational direction by a pin 11. and bridging board 10
Its tail end 12 is biased by a tension spring 14. The other end of the tension spring 14 is attached to a bracket 13 fixed to the lower surface of the bottom wall surface 1a.

The tip of the bridging plate 10 is pressed against the back wall surface 1b of the front bucket to form a bridging structure.

In the case of FIG. 7, a flexible chute plate 10a is fixed between the bottom wall surface 1a of the bucket 1 in front and the back wall surface lb of the bucket 1 immediately in front of the chute plate 1.
0a is fixed to the front and rear buckets to form a bridge.

In the case of FIG. 8, one end of the leaf spring lOb is fixed to the outer surface of the back wall surface 1b of the bucket 1. The other end of the leaf spring tob is free and comes into contact with the inner surface of the bottom wall surface 1a of the bucket on the immediate rear side when viewed in the direction of travel, forming a bridge.

The case of FIG. 9 is similar to the example of FIG.

As shown in FIG. 6, the tension spring 14 is not attached.

That is, the plate 10c is pivotally attached to a bracket 15 fixed to the bottom wall surface 1a of the bucket 1, and the other end is free.
The plate 10c is movable between the front edge of the bucket to which the plate 10c is attached and the back wall surface 1b of the bucket 1 immediately in front in the traveling direction. Then, it rests on the back wall surface lb immediately in front, forming a bridge.

In the case of FIG. 10, the bridge is constructed by a flexible chute plate 10d whose both edges are fixed to the bottom wall surfaces 1a of the front and rear buckets 1.

Since the chute plate 10d is flexible, it can flex on the upper sprocket during rotation as shown by the imaginary line in FIG. 10, so there is no problem even if both edges are fixed.
According to this, it is possible to construct a complete bridge without spillage.

(Effect) Since the bucket is entangled with the upper sprocket and a bridge is created between adjacent buckets, the bulk cargo inside the bucket is released from the back of the front bucket via this bridge, completely preventing spillage. .

[Brief explanation of drawings]

Figure 1 is a side view of the top of the chain bucket. Fig. 2 is an enlarged view of the part shown by the ■ arrow in Fig. 1. FIG. 3 is an explanatory diagram of the discharge state of bulk materials. FIG. 4 shows the state at the time of discharge when the guide vanes are made of iron and the fittings are made of rubber. FIG. 5 is a diagram showing the relationship between the bucket and guide vanes at the bottom of the sprocket. FIGS. 6 to 11 show five embodiments in which bridges are provided between buckets. FIG. 12 shows an example of a conventional method for preventing spillage of seedlings. In the figure: 1 Bucket 2 Chain 3 Sprocket wheel 4 Bucket internal drum 5 Shaft 6, 6' Fixture 7.7'
Guide vane 8 Bulk cargo 9 Chain link 10
Bridge plate 10a Shoot plate 10b Leaf spring 10c
Plate 10d Chute plate 11 Pin 12 Tail end (of the bridging plate) 13 Bracket 14 Tension spring and above Applicant Sumitomo Heavy Industries Co., Ltd. sub-agent Patent attorney Isamu Ohashi Figure 1 Figure 2 7 Inner corner Figure 3 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Claims] [1] A structure in which a bridge is provided between adjacent buckets that are entangled with the upper sprocket, and the bulk material in the buckets is discharged through the back surface of the bucket on the forward side in the direction of rotation. A method for releasing bulk materials from a chain-type bucket in a continuous unloader. [2] Flexible guide vanes are attached to the surface of the bucket internal drum via fittings so as to be located between the buckets attached to the chain. A chain type bucket bulk discharge device in a continuous unloader, characterized in that a bridge is formed between the buckets. [3] The bulk material discharge device for a chain type bucket in a continuous unloader according to claim [2], wherein the fixture is made of iron and the guide vane is made of rubber. [4] The bulk material discharge device for a chain type bucket in a continuous unloader according to claim [2], wherein the fixture is made of rubber and the guide vane is made of iron. [5] A chute plate is installed between the bottom wall of the bucket that spans between the chain links and the bottom wall or back wall of the adjacent front bucket, which allows the buckets to tilt relative to each other. A chain type bucket bulk discharge device in a continuous unloader, characterized in that a bridge is formed between the buckets.