JP2020158226A - Bucket conveyor - Google Patents

Abstract

To provide a bucket conveyor capable of closing a clearance formed between a bucket and a chute while preventing a rubber member disposed at the bucket from being abraded.SOLUTION: The bucket conveyor includes a chute which is a region for charging a transported article into a bucket, a feeder for charging the transported article to an inside of the chute, and a second rubber member provided at a lower end part of the chute; a first rubber member is fitted along an edge of a bucket port and installed so that a lower end of the second rubber member is brought into contact with the first rubber member of the bucket when the bucket is positioned below the chute; and the first rubber member is harder than the second rubber member.SELECTED DRAWING: Figure 3

Description

The present invention relates to a bucket conveyor.

Conventionally, bucket conveyors for transporting powdered or loosely transported goods have been known. For example, Patent Document 1 discloses a bucket conveyor provided with a connecting member for eliminating a gap generated between a bucket and a chute.

Japanese Unexamined Patent Publication No. 10-218329 (published on August 18, 1998)

However, in the bucket conveyor disclosed in Patent Document 1, the bucket is worn due to the contact between the connecting member and the bucket. However, even if a rubber member is attached to the bucket in order to protect the bucket from wear, the rubber member is worn due to contact between the connecting member and the rubber member. As a result, it becomes necessary to replace the rubber member over the entire circumference of the bucket conveyor, and it is expected that it will take time and effort to replace the rubber member.
Therefore, there has been a demand for a method for preventing wear of the rubber member provided on the bucket while eliminating the gap between the bucket and the chute.

One aspect of the present invention is to prevent the rubber member provided on the bucket from being worn and to close the gap formed between the bucket and the chute.

In order to solve the above problems, the belt conveyor according to one aspect of the present invention includes an endless band body installed in a loop, a rotating mechanism for rotating the endless band body, and the endless band body. A plurality of buckets attached to the inside of the loop with the bucket openings facing, a chute which is an area for throwing the transported material into the bucket, a feeder for throwing the transported material into the chute, and the chute. A second rubber member provided at the lower end is provided, and the first rubber member is attached along the edge of the bucket opening, and the second rubber member is when the bucket is located below the chute. The lower end of the second rubber member is installed so as to be in contact with the first rubber member of the bucket, and the hardness of the second rubber member is smaller than the hardness of the first rubber member.

According to one aspect of the present invention, it is possible to close the gap formed between the bucket and the chute while preventing the rubber member provided on the bucket from being worn.

(A) is a schematic view which shows the whole structure of the bucket conveyor which concerns on Embodiment 1. (B) is a cross-sectional view taken along the line AA'in (a). It is an enlarged view in the frame line in FIG. (A) is a perspective view which shows the appearance of each member provided between a chute and a bucket in the bucket conveyor. (B) is a view taken along the line BB'of (a). It is the schematic which shows the structure of the cross section of the 3rd rubber member in the bucket conveyor as a modification of the said bucket conveyor. (A) is a perspective view showing the appearance of each member provided between a chute and a bucket in a bucket conveyor as a further modification of the bucket conveyor. (B) is a schematic view showing the structure of the lower end portion of the third rubber member.

[Embodiment 1]
Hereinafter, one embodiment of the present invention will be described in detail.

[Bucket conveyor structure]
FIG. 1A is a schematic view showing the overall structure of the bucket conveyor 1a according to the present embodiment. FIG. 1B is a cross-sectional view taken along the line AA'in FIG. 1A. As shown in FIG. 1 (a), the bucket conveyor 1a is provided with rotating mechanisms 4 and 5 rotatably supported at positions above the paper surface of FIG. 1 in the conveyor case 3, and rotates. The mechanisms 4 and 5 are rotationally driven by a motor (not shown). The rotation mechanisms 4 and 5 rotate the endless strips 6 and 7. Further, as shown in FIG. 1B, the rotation mechanism 4 includes a rotation mechanism shaft 4a rotatably supported and a pair of rotation mechanisms 4b and 4c attached to the rotation mechanism shaft 4a so as to be separated from each other. And have. Further, although not shown, the rotation mechanism 5 also has a rotation mechanism shaft 5a rotatably supported and a pair of rotation mechanisms 5b and 5c attached to the rotation mechanism shaft 5a so as to be separated from each other. ..

Further, the rotation mechanism 4 and the rotation mechanism 5 are wound with one endless band body 6 and 7 respectively, and are installed in a loop shape. A plurality of buckets 2 (in FIG. 1A, reference numerals 2a to 2f are assigned to some of the buckets 2) are formed between the endless strips 6 and 7. It is attached so that the mouth (bucket mouth) of each bucket 2 faces inside the loops 6 and 7.

Further, the bucket conveyor 1a is provided with a chute 10 which is an area for charging the transported material into the bucket 2. Further, the bucket conveyor 1a includes a feeder 50 that feeds the transported material into the chute 10.

[Bucket mouth structure]
FIG. 2 is an enlarged view of the frame line in FIG. That is, in this figure, the structure of a portion where a plurality of buckets 2 are attached to the endless band 6 is shown. When the buckets 2b to 2d are located below the chute 10 (not shown), the first rubber member 32 is attached to the upper end position (for example, the upper end of the cushioning material 31 in FIG. 2). In other words, the first rubber member 32 is attached along the edge of the bucket opening. The cushioning material 31 is formed along the outer circumference of the support member 18 to prevent wear of each facility (for example, the support member 18 and the like).

FIG. 3A is a perspective view showing the appearance of each member provided between the chute 10 and the bucket 2 in the bucket conveyor 1a according to the present embodiment. FIG. 3B is a view taken along the line BB'in FIG. 3A.

As shown in FIGS. 3A and 3B, the bucket conveyor 1a has a third rubber member 11 (also called an apron rubber) that guides the transported material introduced from the feeder 50 to the chute 10 into the space 2'in the bucket 2. (Called) is provided. The third rubber member 11 is provided below the inlet of the feeder 50.

As shown in FIG. 3A, the second rubber member 15 is fixed to the connecting member 16 by using the connecting member 40 and the fastener 41. Further, the side plate 14 is connected to the connecting member 16 by the connecting member 20 and the fasteners 19a and 19b. The third rubber member 11 is fixed to the first wall 14a of the side plate 14 by connecting members 12a and 12b and fasteners 13a and 13b. The feeder 50 is provided above the upper surface 14b of the side plate 14.

Further, as shown in FIG. 3B, the second rubber member 15 is provided at the lower end portion of the chute 10. The second rubber member 15 is installed so that the lower end (bottom surface 15a of the second rubber member 15) is in contact with the first rubber member 32 when the bucket 2 is located below the chute 10.

As the material used for the second rubber member 15, for example, a material having a hardness smaller than that of the first rubber member 32 is used. With the above configuration, it is possible to prevent the first rubber member 32 from being worn due to contact with the first rubber member 32. Specifically, for example, when the first rubber member 32 is made of solid rubber, the hardness of the first rubber member 32 is 60 IRHD. Therefore, the material of the second rubber member 15 is preferably, for example, a material having a hardness of 10 IRHD or more and less than 60 IRHD. If the hardness of the second rubber member 15 is less than 10 IRHD, the second rubber member 15 is too soft, and the transported material may jump out of the bucket. On the other hand, when the hardness of the second rubber member 15 exceeds 60 IRHD, the first rubber member 32 is worn.

As an example of the material, for example, when the first rubber member 32 is made of non-foam rubber (specifically, solid rubber or the like), the material of the second rubber member 15 may be foam rubber. preferable.

The example of the foam rubber is not particularly limited as long as it is a material having excellent durability, abrasion resistance, and chemical resistance, such as sponge rubber. Examples of the sponge rubber include EPDM (ethylene-propylene-diene-based ternary copolymer rubber), PE (polyethylene) and the like.

By using the non-foam rubber as the first rubber member 32, it is possible to prevent the first rubber member 32 from being worn when the second rubber member 15 and the first rubber member 32 come into contact with each other.

The thickness HA (horizontal length) of the second rubber member 15 is a thickness having a resilience enough to bounce the transported object into the bucket 2 when the transported object collides with the second rubber member 15. If there is, there is no particular limitation. For example, the thickness of the second rubber member 15 is preferably 65 mm or more and 80 mm or less. When the thickness of the second rubber member 15 is 65 mm or more, the life of the second rubber member 15 is extended to one month or more on average. Further, when the thickness of the second rubber member 15 is 80 mm or less, it is possible to reliably put the transported material into the bucket without hindering the transported material from entering the bucket. Further, the second rubber member 15 does not necessarily have to be substantially rectangular and plate-shaped as in the present embodiment.

As a means for measuring the hardness of each of the first rubber member 32 and the second rubber member 15, a known method such as JIS K 6253: 2012 is used.

[Modification 1]
A modification of the present invention will be described below. For convenience of explanation, the same reference numerals will be added to the members having the same functions as the members described in the above embodiment, and the description will not be repeated.

FIG. 4 is a schematic view showing the structure of the cross section of the second rubber member 15 in the bucket conveyor 1b according to the present embodiment. Note that FIG. 4 is a cross-sectional view taken along the same line as the BB'direction shown in FIG. 3A.

In the bucket conveyor 1b according to the present embodiment, the second rubber member 15 does not have to be all made of the same material. For example, as shown in FIG. 4, only a part of the second rubber member 15 (specifically, near the bottom surface 151b in contact with the first rubber member 32) may be formed of sponge rubber.

According to the above configuration, the resilience to the contact with the transported object can be improved, so that the transported object can be more reliably prevented from falling out of the bucket.

Note that FIG. 4 shows the second rubber member 15 formed so that the upper surface 151a of the second rubber member 151 formed of sponge rubber and the bottom surface 152a of the second rubber member 152 are in contact with each other. Further, the second rubber member 151 is formed below the connecting member 40 and the connecting member 16 which are joined to the side surface 152b and the side surface 152c of the second rubber member 15, respectively. However, the height HC of the second rubber member 151 with respect to the overall height HB of the second rubber member 15 is not particularly limited.

[Modification 2]
FIG. 5A is a perspective view showing the appearance of each member provided between the chute 10 and the bucket 2 in the bucket conveyor 1c as a further modification, and FIG. 5B will be described later. It is the schematic which shows the structure of the lower end 11Aa of the 3rd rubber member 11A.

As shown in FIG. 5A, the bucket conveyor 1c includes a third rubber member 11A instead of the third rubber member 11 in the first embodiment. The third rubber member 11A is installed so that the lower end 11Aa is in contact with the first rubber member 32 when the bucket 2 is located below the chute 10.

As shown in FIG. 5B, the lower end 11Aa of the third rubber member 11A is provided with a plurality of notches in the vertical direction. In other words, the lower end 11Aa of the third rubber member 11A is in the shape of a curtain.

In the bucket conveyor 1c having the above configuration, when the bucket 2 is located below the chute 10, the lower end 11Aa of the third rubber member 11A is installed so as to be in contact with the first rubber member 32. It is possible to prevent the transported object from falling from the bucket 2 when it is put into the bucket 2.

Further, in the bucket conveyor 1c, since the lower end 11Aa of the third rubber member 11A is in the shape of a curtain, when the bucket 2 rotates and the bucket 2 (first rubber member 32) comes into contact with the third rubber member 11A. In addition, the pressure applied to the bucket 2 (first rubber member 32) and the third rubber member 11A can be reduced. As a result, consumption of the bucket 2 (first rubber member 32) and the third rubber member 11A can be suppressed (in other words, the life of the bucket 2 (first rubber member 32) and the third rubber member 11A is extended. can do).

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention.

[Summary]
The bucket conveyor according to one aspect of the present invention has an endless band installed in a loop shape, a rotating mechanism for rotating the endless band, and a bucket mouth facing the inside of the loop of the endless band. A plurality of attached buckets, a chute which is an area for throwing the transported material into the bucket, a feeder for throwing the transported material into the chute, and a second rubber provided at the lower end of the chute. A member is provided, and a first rubber member is attached along the edge of the bucket mouth. The second rubber member has a lower end of the second rubber member when the bucket is located below the chute. It is installed so as to be in contact with the first rubber member of the bucket, and the hardness of the second rubber member is smaller than the hardness of the first rubber member.

According to the above configuration, it is possible to close the gap formed between the bucket and the chute while preventing the rubber member provided on the bucket from being worn.

The bucket conveyor according to one aspect of the present invention may contain sponge rubber as a material used for the second rubber member. According to the above configuration, it is possible to close the gap formed between the bucket and the chute while preventing the rubber member provided on the bucket from being worn.

In the bucket conveyor according to one aspect of the present invention, the hardness of the second rubber member may be 10 or more and 60 IRHD or less. According to the above configuration, it is possible to prevent the transported object from jumping out of the bucket and to prevent the rubber member provided on the bucket from being worn.

In the bucket conveyor according to one aspect of the present invention, the thickness of the second rubber member may be 65 mm or more and 80 mm or less. According to the above configuration, the life of the second rubber member is extended to one month or more on average, and the transported material can be reliably put into the bucket without hindering it from entering the bucket.

The bucket conveyor according to one aspect of the present invention may contain non-foam rubber and foam rubber as materials for the second rubber member. According to the above configuration, the resilience to contact with the transported object can be improved, so that the transported object can be more reliably prevented from falling out of the bucket.

The bucket conveyor according to one aspect of the present invention is further provided with a third rubber member which is provided inside the chute and guides the transported material loaded from the feeder to the bucket, and the lower end of the third rubber member is It is in contact with the upper end of the first rubber member, and among the lower ends of the third rubber member, the contact portion with the upper end of the first rubber member may be in the shape of a curtain.
According to the above configuration, when the bucket is located below the chute, the lower end of the third rubber member is installed so as to be in contact with the first rubber member, so that the transported object is loaded into the bucket. Can be prevented from falling out of the bucket. Further, when the first rubber member and the third rubber member come into contact with each other, the pressure applied to the bucket and the third rubber member can be reduced. As a result, wear of the bucket and the third rubber member can be suppressed.

An embodiment of the present invention will be described below.

Each bucket conveyor provided with a first rubber member formed of Lined 60 (manufactured by Linatex Rubber Products) and a second rubber member of the materials and thicknesses shown in Table 1 below was operated. After the operation, the amount of the transported material that fell to the bottom of the conveyor case and the state of wear of the second rubber member were evaluated.

比較例では、第２ゴム部材が硬く、第１ゴム部材に接触させると、第１ゴム部材を傷つけてしまうおそれがあった。そのため、第１ゴム部材と第２ゴム部材との間に隙間を空けざるを得なかった。

In the comparative example, the second rubber member was hard, and when it came into contact with the first rubber member, there was a risk of damaging the first rubber member. Therefore, there was no choice but to leave a gap between the first rubber member and the second rubber member.

On the other hand, in Examples 1 and 2, since the second rubber member was soft, the first rubber member did not wear even when the second rubber member came into contact with the first rubber member. Further, in Examples 1 and 2, the amount of fall of the transported object was significantly reduced by installing the second rubber member so as to be in contact with the first rubber member. That is, in Examples 1 and 2, it was possible to prevent the first rubber member from being worn and to block the gap formed between the bucket and the chute to prevent the transported object from falling.

Further, when the thickness of the second rubber member was changed, the life of the skirt rubber was longer in Example 2 than in Example 1.

From the above results, it was demonstrated that the use of sponge rubber as the second rubber member was able to reduce the amount of transported material falling to the bottom of the conveyor case as compared with the case of using solid rubber.

The present invention can be used in the field of transporting transported goods.

1a, 1b, 1c Bucket conveyor 2 Bucket 4, 5 Rotation mechanism
6, 7 Endless band 10 Chute 11 3rd rubber member 15 2nd rubber member 32 1st rubber member 50 Feeder

Claims (6)

An endless band installed in a loop and
A rotation mechanism that rotates the endless band and
A plurality of buckets attached to the inside of the loop of the endless band with the bucket openings facing,
A chute, which is an area for loading the goods into the bucket,
A feeder that throws the transported material into the chute,
A second rubber member provided at the lower end of the chute is provided.
A first rubber member is attached along the edge of the bucket mouth.
The second rubber member is installed so that the lower end of the second rubber member comes into contact with the first rubber member of the bucket when the bucket is located below the chute.
A bucket conveyor in which the hardness of the second rubber member is smaller than the hardness of the first rubber member. The bucket conveyor according to claim 1, wherein sponge rubber is included as a material used for the second rubber member. The bucket conveyor according to claim 1 or 2, wherein the hardness of the second rubber member is 10 or more and 60 IRHD or less. The bucket conveyor according to any one of claims 1 to 3, wherein the thickness of the second rubber member is 65 mm or more and 80 mm or less. The bucket conveyor according to any one of claims 1 to 4, wherein the material of the second rubber member includes non-foam rubber and foam rubber. Further provided with a third rubber member provided inside the chute to guide the transported material loaded from the feeder to the bucket.
The lower end of the third rubber member is in contact with the upper end of the first rubber member.
The bucket conveyor according to any one of claims 1 to 5, wherein the lower end of the third rubber member comes into contact with the upper end of the first rubber member in the shape of a curtain.

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