JPH0734008Y2 - Bucket elevator bucket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a bucket mounted on a bucket elevator for transporting granular materials such as coal.

(Prior Art) A bucket elevator is often used to convey granular materials such as coal. The bucket elevator has a plurality of buckets mounted at predetermined intervals on a conveyor chain that runs in parallel in the vertical direction, and scoops up particulate matter at a carry-in port provided below the elevator, and carries it above. Discharge to the exit. Such scooping and discharging operations of particulate matter are performed as the conveyor chain travels, but depending on the particulate matter to be transported, the discharge at the carry-out port may not be successful, and it may remain at the bottom of the bucket. Many. For example, when coal is conveyed, a liquid substance such as sticky cortar is discharged from the coal, and the liquid substance causes the coal to adhere to the bottom of the bucket.

In this way, if the operation is continued with the transported material attached to the bottom of the bucket, the amount of the material carried into the bucket at the carry-in port (the amount of scooping) is reduced, and the transportation efficiency is reduced.

Therefore, if a flexible plate made of rubber or the like is attached to the inner surface of the bucket so that the transported material does not remain on the bottom of the bucket and the bucket is turned downward at the discharge port, It is known in the art that the flexible plate hangs apart from the bottom of the bucket. For example,
53-51021 "Bucket conveyor for transporting moist powder lumps", "Conveyor bucket" according to JP-A-58-59113,
Also, as the bottom of the bucket body is made up of a flexible plate, a "bucket elevator" according to No. 1-169521, and a supporting rod for supporting the flexible plate under the bucket made of a flexible plate. As an array of multiple lines, there is a "conveyor bucket discharge structure" according to Japanese Utility Model Laid-Open No. 63-90611.

By the way, as the flexible plate serving as the bottom of the bucket, generally, a rubber plate, or a mixture of a reinforcing material in the rubber, if the relatively soft granules or powdery matter, there is little problem, As a material for buckets that contain granular materials that are heavy and have high hardness, such as coal and coke,
The rubber flexible plate has a problem in strength. In addition, not only the bottom surface but also the inner surface is adhered to the bucket. As a result, the flexible plate is restrained by the conveyed material adhered to the inner surface and it is difficult for the bucket to hang down even if it is turned over. Resulting in. Even if they do not stick to each other, the conveyed material attached to the inner surface and both side surfaces (end surfaces) of the flexible plate come into contact with each other and are worn during drooping.

On the other hand, the flexible plate is attached along the bucket bottom by bending it into a substantially U shape, and the flexible plate attached in such a shape is separated from the bucket bottom when the bucket is turned over. In order to droop, the bending rigidity of the flexible plate itself must be low. The small bending rigidity means that the plate thickness is thin, and it also affects the strength of the flexible plate. Therefore, in reality, it is limited to a large bucket that has a considerable thickness and only droops. In many cases, due to the high flexural rigidity of the flexible plate and the adhesion of the conveyed object, the flexible plate is operated without hanging during the actual conveyance.

(Purpose of the Invention) As described above, the bucket to which the flexible plate is attached still has the above-mentioned problems, and in reality, a sufficiently satisfactory effect is not obtained.

The present invention is intended to solve these problems, and provides a bucket for an elevator that can discharge a conveyed product in the bucket to the carry-out port without leaving the container.

(Structure of the present invention) In order to prevent the goods loaded in the bucket from adhering to the bottom, the flexible plate is attached to the bottom of the bucket, and the flexible plate is hung down to some extent when the bucket is inverted. However, in the present invention, a chain is used to solve the drawbacks of the flexible plate. As is well known, a chain is formed by joining elliptical rings, and a plurality of these chains are connected by a connecting bar crossing perpendicularly to the longitudinal direction of the chain to form a chain network.
Both ends of each chain are fixed to a bucket. Of course, the connecting bar is a means for connecting the chains, and the chain may be formed by another joint.

The bucket of the present invention constitutes the bottom of the bucket by this chain, but supports the chain as necessary,
A support rail is attached to the bucket body to maintain a predetermined bottom shape. It is also possible to use a chain instead of the chain.

(Operation) By constructing the bottom of the bucket with the above-mentioned chain net, when the bucket is reversed, it hangs down by its own weight as in the conventional flexible plate. In this case, the characteristic of the chain is that its weight is large and its strength is high, but since it bends at each pitch without affecting its weight or strength, the bending rigidity is extremely small, and the chain when the bucket is inverted The hanging of the net is easy and reliable. Further, the chain net does not make surface contact with the conveyed product, and is theoretically point contact or line contact, and does not give an element that the conveyed product adheres to the chain.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

(Example) FIG. 1 is a schematic view of a general bucket elevator.
As shown in the figure, sprockets are attached to the upper and lower ends of the case 1.
2a and 2b are axially mounted, a conveyor chain 3 is wound around these sprockets 2a and 2b, and a plurality of buckets 4, 4 ... Are attached to the conveyor chain 3 at regular intervals. . The case 1 has a carry-in port 5 at the lower end and a discharge port 6 at the upper end, and the bucket 4 at the lower end picks up the conveyed product from the carry-in port 5 and discharges it to the upper carry-out port 6. The present invention does not limit the form of this bucket elevator, and is intended for the bucket 4 attached to the conveyor chain. When the bucket 4 is inverted at the upper end of the case 1, at the same time when the bucket 4 is inverted, the chain is attached to the bucket bottom. The chain net to which the net is attached hangs down to discharge the conveyed product without leaving it.

FIG. 2 shows a concrete example of the bucket 4, in which a front plate 8 and a back plate 9 are welded between both side plates 7, 7 to form a kind of frame body, and a chain net 10 is formed on the bottom thereof. Has been attached. The chain network 10 includes a plurality of chains 11, 11 ... And splices 12, 12.
And the connecting bars 12, 12 ... Are arranged in a direction perpendicular to the chains 11, 11 ...
Connect so that 1, 11 ... Do not separate. The chain net 10 constructed in this way is attached to the bottom of the bucket 4, so that the metal fittings 13 and 13 provided on the lower end portions of the front plate 8 and the back plate 9 are provided.
Both ends of each chain 11 are fixed to.

In addition, a plurality of support bars 1 are provided at the lower end portions of the side plates 7 of the bucket 4.
4, 14 ... are welded and support the above-mentioned chain net 10.
Although the support bars 14, 14 ... Are not always required,
If there is no 4, 14, ..., the chain net 10 will have a natural drooping shape that draws a parabola due to its own weight. If the support bar 14, 14 ... Supports the chain net 10, an arbitrary bucket bottom is formed. obtain.

Such a bucket 4 is attached to the conveyor chain 3 in the conventional manner, and is attached to the conveyor chain 3 via attachment tools 15, 15 ...

By the way, the chain net 10 can be freely bent with the ring pieces 16, 16 forming the chain 11 as one pitch, and the ring pieces 16 of each chain 11 have a large hole, and the chain 11, 11 is also formed. A certain amount of gap is formed between them. Granules such as coal and coke are put in the bucket 4 with the chain net 10 as the bottom, but coal tar exuding from the granules does not flow out from the holes or the gaps and are not collected at the bottom of the bucket. In some cases, the chain network 10
Instead of this, a chain network in which roller chains are joined together can be used.

3A and 3B show another embodiment of the present invention in which the bottom of the back plate 9 of the bucket 4 is cut to lengthen the chain net 10 by that amount.

FIGS. 4A and 4B also show an embodiment in which another form is shown. In the case of this embodiment, the lower end portions of the front plate 8 and the back plate 9 are deleted to further lengthen the chain net 10. Therefore, the number of support bars 14, 14 ... Welding between the both side plates 7, 7 also increases. As shown in FIG. 2, when the chain net 10 is short, it does not matter even if the support bar 14 is not attached. However, as shown in FIG. 4, when the chain net 10 becomes long, the support bar 14,
It is necessary to regulate the shape of the wedge 10 by 14.

As described above, the bucket of the present invention has a bucket bottom formed of a chain network, and the following effects can be obtained.

(Effects) (1) Unlike the conventional flexible plate, the chain net forming the bottom of the bucket has high strength and heavy weight. Therefore, if the bucket reverses as the conveyor chain travels, the chain net bends in the opposite direction. Then, it hangs down and discharges the conveyed items stored in the bucket without leaving them on the bottom. And since the chain net can be bent with the wedges of the chain as one pitch, the strength is extremely high, but the bending rigidity of the entire chain is low, and the chain is partially bent so that the weight of the chain acts on the conveyed product. It will be pushed down.

(2) The chain also has gaps between the chains and the gaps between the chains, and the viscous liquid does not accumulate at the bottom of the bucket in order to flow out from these gaps, and the chain has an uneven bottom surface for conveyance. Because things do not stick together,
Easy to eject from the bucket.

[Brief description of drawings]

FIG. 1 shows a general bucket elevator, and FIGS.
FIG. 4 shows the buckets of the present invention. 1 ... Case, 2 ... Sprocket, 3 ... Conveyor chain, 4 ... Bucket, 5 ... Carrying port, 6 ... Carrying port, 7 ... Side plate, 8 ... Front plate, 9 ... Back plate, 10 …… Chain net, 11 …… Chain, 12 …… Splice, 13 …… Metal fittings, 14…
… Support bars, 15… Attachments, 16… Ring pieces.

Claims (1)

[Scope of utility model registration request] 1. In a bucket mounted on a conveyor chain of a bucket elevator, a plurality of chains are connected by a connecting bar arranged in a state of penetrating a hole of a ring piece to form a chain, and the chain of the chain is described above. Fix both ends with the metal fittings provided on the lower end of the front plate and the lower end of the back plate of the bucket,
A bucket for an elevator, characterized in that at least the bottom of the bucket is constituted by the chain network.