JP4547827B2 - Ore conveyor belt - Google Patents

Ore conveyor belt Download PDF

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Publication number
JP4547827B2
JP4547827B2 JP2001116614A JP2001116614A JP4547827B2 JP 4547827 B2 JP4547827 B2 JP 4547827B2 JP 2001116614 A JP2001116614 A JP 2001116614A JP 2001116614 A JP2001116614 A JP 2001116614A JP 4547827 B2 JP4547827 B2 JP 4547827B2
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Japan
Prior art keywords
cover layer
rubber
belt
conveyor belt
width direction
Prior art date
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JP2001116614A
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Japanese (ja)
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JP2002308410A (en
Inventor
宏暁 渡辺
英之 大石
裕司 下田代
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Yokohama Rubber Co Ltd
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Yokohama Rubber Co Ltd
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【0001】
【発明の属する技術分野】
この発明は、鉱石運搬用コンベヤベルトに係わり、更に詳しくは、鉄鉱石等を運搬する耐偏摩耗性に優れた鉱石運搬用コンベヤベルトに関するものである。
【0002】
【従来技術】
従来、鉄鉱石等を運搬するコンベヤベルトは、表面に耐摩耗性に優れたゴムを配置し、鉄鉱石等の搬送による表面ゴムの摩耗による損傷を防ぐように構成される。コンベヤベルトの表面ゴムの摩耗による損傷を防ぐために、これまで多くの提案がなされているが、鉱石等を搬送するコンベヤベルトの場合には移送中の鉱石等がコンベヤベルトから落下しないようにコンベヤベルトの積み荷側であるベルト表面の幅方向両側の上方からベルト表面に向かってスカ−トと称する落下防止の枠が設けられている。
【0003】
そしてコンベヤベルトは前記スカ−トの下を移送するが、スカ−トの下端部とベルト面との間に搬送中の鉱石等が入り込んでベルト面を損傷しないように、これらの間隔をできるだけ狭く設定している。
【0004】
これにより、ベルトの移送中にベルト表面がスカ−ト下端部との摩擦により損傷を受けてベルトの寿命を短縮するという問題があった。
【0005】
これを解決するために、本願出願人は、1996年4月16日付け特許出願(発明の名称:コンベヤベルト、特開平9−278139号)において、スカ−ト下端部付近のゴム組成物として高耐摩耗性ゴムを配置し、ベルト表面の摩擦による損傷を極力抑える発明を提案している。
【0006】
【発明が解決しようとする課題】
然しながら、その後、出願人が鋭意研究と実験等を行った結果、上記特許出願(特開平9−278139号)の発明では、下記のような種々の課題があることが判明した。
【0007】
即ち、図2に示すベルト本体1は、上面カバーゴム2または下面カバーゴム3の表面の荷物積載部X(摩耗促進部)で、かつベルト本体1の幅方向H及び厚さ方向tに、摩耗性指数の異なる少なくとも2種類の耐摩耗性に優れたゴムコンパウンド5を配設して構成したものであるが、上面カバーゴム2の荷物積載部Xの両側に配設されるスカートゴム7の下端部付近では局部的な摩耗が発生し易いことが判った。
【0008】
また図3に示すように、上面カバーゴム2または下面カバーゴム3の表面に、3種類の異なったゴムコンパウンド5a,5bを使用した場合には、ゴム層間Gが多く、剥離し易くなる可能性があり、ベルト本体1の寿命を更に延ばすことが望まれた。
【0009】
そこで、この発明ではかかる課題に着目して、スカ−ト下端部付近に、更に耐摩耗性を保持しているゴムコンパウンドを配置して、局部摩耗による製品寿命の低下を防止すると共に、各カバーゴム間の接着面を少なくすることにより、ベルト表面におけるゴム同士の剥離を抑止した耐偏摩耗性に優れた鉱石運搬用コンベヤベルトを提供することを目的とするものである。
【0010】
【課題を解決するための手段】
記目的を達成する本発明の鉱石運搬用コンベヤベルトは、耐摩耗性に優れたカバー層を表面に有すると共に、積み荷側のベルト幅方向両側に上方からベルト表面に向かってスカートを吊設した鉱石運搬用コンベヤベルトであって、前記カバー層が幅方向中央域に位置する中央カバー層と幅方向両側域に前記スカートに対向するように位置する帯状カバー層とからなると共に、前記帯状カバー層が、50〜65重量のBRを含むジエン系ゴム100重量部に対して、窒素吸着比表面積が140m/g以上145m /g以下、DBP吸油量が100ml/100g以上115ml/100g以下、CTAB吸着比表面積が140m/g以上146m /g以下及び比着色力が130%以上136%以下であるカ−ボンブラックを40〜65重量部配合したゴム組成物からなることを要旨とするものである。
【0012】
これにより、ベルトの幅方向の両側域の上方に位置するスカ−ト下端部とベルト表面との摩擦によるベルトの損傷が抑えられ、かつベルトカバ−層に使用するゴムの種類を2種類以下にしたのでゴム間の剥離問題が解消できた。
【0015】
【発明の実施の形態】
以下、添付図面に基づき、この発明の実施形態を説明する。
【0016】
なお、各図において、同一の構成要素は同一の符号を付し、重複した説明は省略する。
【0017】
図1は、この発明のコンベヤベルトの一実施形態を示す幅方向断面図で、コンベヤベルト1の表面には耐摩耗性に優れたカバ−層が配置され、カバ−層は幅方向中央域に位置する中央カバ−層2と幅方向両側域に位置する帯状カバ−層3とからなる。なお、図中4はコンベヤベルトの本体ゴムを示し、Rはコンベヤベルトの補強層を示している。
【0018】
カバ−層としては一般的に鉄鉱石等を搭載するために耐摩耗性に優れたゴム組成物が使用されるが、中でも幅方向両側域は移送する鉄鉱石の落下を防ぐための枠であるスカ−トの下端部との摩擦によりカバ−層の表面に偏摩耗が生じるために、この発明ではカバ−層の幅方向両側域に周囲のゴムに比較してさらに耐摩耗性に富んだ部材からなる帯状カバ−層3を配置してベルト表面の偏摩耗を防いでいる。
【0019】
幅方向両側域に配置する帯状カバ−層3の幅は特に限定されないが、通例100〜200mmに設定する。
【0020】
また、この実施態様では中央カバ−層2のゴムとして本体ゴム4とは別の摩耗性に優れたゴムを使用する場合を示しているが、中央カバ−層2のゴムと本体ゴム4とに同じ摩耗性に優れたゴムを使用する場合もある。
【0021】
帯状カバ−層3に使用するゴム組成物には特に優れた耐摩耗性が要求され、その組成物は、ゴム成分が50〜65重量のBRを含むジエン系ゴムからなり、そのゴム成分100重量部に対して、窒素吸着比表面積(NSA)が140m/g以上145m /g以下、DBP吸油量が100ml/100g以上115ml/100g以下、CTAB吸着比表面積が140m/g以上146m /g以下、比着色力(Tint)が130%以上136%以下になるように調整したコロイダル特性を有するカ−ボンブラックを40〜65重量部配合して得る。
【0022】
ジエン系ゴム中に占めるBRの重量又はカ−ボンブラックの特性値及び重量が上記の範囲外である場合にはゴム組成物の耐摩耗性が不足するため、ベルト表面の偏摩耗を充分に防止することができない。
【0023】
なお、上記のカーボンブラック特性は、下記の方法によって測定される。
(a).窒素吸着比表面積(N2 SA):ASTM D3037-88 "Standard Test Method for Carbon Black-Surface Area by Nitrogen Absorption" による。この測定方法によるIRB#6 のN2 SAは76m2/gである。
(b).CTAB吸着比表面積:ASTM D3765-89 "Standard Test Method for Carbon Black-CTAB(CET-YLTRIMETHYL AMMONIUM BROMIDE)Standard Area" による。この測定方法によるIRB#6 のCTAB吸着比表面積は77m2/gである。
(c).DBP吸油量:JIS K6221-82「ゴム用カーボンブラックの試験方法」6.1. 2項A法による。この測定方法によるIRB#6 のDBP吸油量は99ml/100 gである。
(d).比着色力(Tint) :JIS K6221-82「ゴム用カーボンブラックの試験方法」6. 1.3項に従い、IIRB#3を基準試料として測定する。
【0024】
〔実施例〕
帯状カバ−層3を構成するゴム組成物として相応しい材料を得るために、BRを含むジエン系ゴム及びカ−ボンブラックの種類と重量とを変化させた試料13種類を作製して摩耗特性を調べ、その結果をこれらの試料の配合割合と共に〔表1〕に示した。
【0025】
〔表1〕ではこの発明の帯状カバ−層4の組成物として相応しいか否かを「DIN摩耗量」の値で区分けすることとし、その基準値を25mm3 として、それより以下である組成物からなる試料をこの発明の「実施例」と表示し、DIN摩耗量が25mm3 超である組成物からなる試料を「比較例」と表示した。
【0026】
なお、ここで使用したカ−ボンブラックの特性値は〔表2〕に示す通りであった。
【0027】
【表1】

Figure 0004547827
【0028】
【表2】
Figure 0004547827
【0029】
上記の実験結果に基づき「実施例」と表示した5種類の組成物をこの発明のコンベヤベルト1の帯状カバ−層3として適用した結果、スカ−ト下端部位置におけるコンベヤベルト1の表面の偏摩耗が解消されることを確認した。
【0030】
【発明の効果】
以上説明したように、この発明のコンベヤベルトはスカ−ト下端部に位置するベルトの幅方向の両側域に耐摩耗性に優れた材料を配置したため、スカ−ト下端部との摩擦によるベルトカバ−層の偏摩耗が抑えられコンベヤベルトの長期使用を可能にした。
【0031】
さらには、ベルトカバ−層に使用するゴムの種類を2種類以下にしたので、ゴム間の剥離による製品寿命の低下を防止することができた。
【図面の簡単な説明】
【図1】この発明のコンベヤベルトの一実施形態を示す幅方向断面図である。
【図2】従来のコンベヤベルトの幅方向断面図である。
【図3】従来の他のコンベヤベルトの幅方向断面図である。
【符号の説明】
1 コンベヤベルト
2 中央カバー層
3 帯状カバー層
本体ゴム [0001]
BACKGROUND OF THE INVENTION
This invention relates to ore-carrying conveyor belts, more particularly, to a about the excellent ore carrying conveyor belts in uneven wear resistance to transport iron ore.
[0002]
[Prior art]
Conventionally, a conveyor belt for transporting iron ore or the like is configured to dispose rubber with excellent wear resistance on the surface and prevent damage due to wear of the surface rubber due to transport of iron ore or the like. Many proposals have been made so far to prevent damage due to wear of the surface rubber of the conveyor belt. However, in the case of a conveyor belt that conveys ore etc., the conveyor belt prevents the ore being transferred from falling from the conveyor belt. A drop-preventing frame called a skirt is provided from the upper side of the belt surface in the width direction on the load side toward the belt surface.
[0003]
The conveyor belt is transported under the skat, but the interval between them is as narrow as possible so that the ore being conveyed does not enter between the lower end of the skat and the belt surface and damage the belt surface. It is set.
[0004]
As a result, there is a problem in that the belt surface is damaged by friction with the lower end of the skirt during the transfer of the belt and the life of the belt is shortened.
[0005]
In order to solve this problem, the applicant of the present application described in a patent application dated April 16, 1996 (invention name: conveyor belt, Japanese Patent Laid-Open No. 9-278139) as a rubber composition near the lower end of the skat. An invention has been proposed in which wear-resistant rubber is arranged to minimize damage caused by friction on the belt surface.
[0006]
[Problems to be solved by the invention]
However, as a result of intensive studies and experiments conducted by the applicant thereafter, it was found that the invention of the above-mentioned patent application (Japanese Patent Laid-Open No. 9-278139) has the following various problems.
[0007]
That is, the belt main body 1 shown in FIG. 2 is worn in the load carrying portion X (wear promoting portion) on the surface of the upper cover rubber 2 or the lower cover rubber 3 and in the width direction H and the thickness direction t of the belt main body 1. A rubber compound 5 having at least two kinds of abrasion resistances having different property indexes is disposed, and the lower end of the skirt rubber 7 disposed on both sides of the load carrying portion X of the top cover rubber 2. It was found that local wear was likely to occur near the area.
[0008]
Further, as shown in FIG. 3, when three different types of rubber compounds 5a and 5b are used on the surface of the upper cover rubber 2 or the lower cover rubber 3, there are many rubber layers G, which may be easily peeled off. Therefore, it has been desired to further extend the life of the belt body 1.
[0009]
Therefore, in the present invention, paying attention to such a problem, a rubber compound that further retains wear resistance is arranged near the lower end of the skirt to prevent a decrease in product life due to local wear, and each cover. by reducing the adhesive surface between the rubber, it is an object to provide a ore conveying conveyor belts having excellent uneven wear resistance which suppresses peeling of the rubber between the belt surface.
[0010]
[Means for Solving the Problems]
Ore conveying conveyor belt of the present invention to achieve the above Symbol purpose, has excellent cover layer in wear resistance on the surface, was suspended a skirt toward the upper surface of the belt in the belt width direction on both sides of the cargo side An ore carrying conveyor belt, the cover layer comprising a center cover layer positioned in the center region in the width direction and a band cover layer positioned to face the skirt in both sides in the width direction, and the band cover layer However, with respect to 100 parts by weight of the diene rubber containing 50 to 65 parts by weight of BR, the nitrogen adsorption specific surface area is 140 m 2 / g or more and 145 m 2 / g or less , the DBP oil absorption is 100 ml / 100 g or more and 115 ml / 100 g or less , CTAB adsorption specific surface area of 140 m 2 / g or more 146m 2 / g or less and Ca ratio tinting strength is less than 136% 130% or more - a carbon black It is an Abstract that consist 0-65 parts by weight compounded rubber composition.
[0012]
As a result, damage to the belt due to friction between the lower end of the skirt positioned above both sides in the width direction of the belt and the belt surface is suppressed, and the number of types of rubber used for the belt cover layer is reduced to two or less. Therefore, the problem of peeling between rubbers was solved.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0016]
In addition, in each figure, the same component is attached | subjected the same code | symbol and the overlapping description is abbreviate | omitted.
[0017]
FIG. 1 is a cross-sectional view in the width direction showing an embodiment of the conveyor belt of the present invention. A cover layer having excellent wear resistance is disposed on the surface of the conveyor belt 1, and the cover layer is located in the center region in the width direction. It consists of a central cover layer 2 located and a belt-like cover layer 3 located on both sides in the width direction. In the figure, 4 indicates the main rubber of the conveyor belt, and R indicates the reinforcing layer of the conveyor belt.
[0018]
As the cover layer, a rubber composition having excellent wear resistance is generally used for mounting iron ore and the like, but both sides in the width direction are frames for preventing falling of the iron ore to be transferred. Since uneven wear occurs on the surface of the cover layer due to friction with the lower end portion of the skirt, in the present invention, a member having more wear resistance than the surrounding rubber on both sides in the width direction of the cover layer. A belt-like cover layer 3 made of is used to prevent uneven wear on the belt surface.
[0019]
Although the width | variety of the strip | belt-shaped cover layer 3 arrange | positioned in the width direction both sides area is not specifically limited, Usually, it sets to 100-200 mm.
[0020]
In this embodiment, the rubber of the central cover layer 2 is a rubber having excellent wear properties different from that of the main rubber 4, but the rubber of the central cover layer 2 and the main rubber 4 are used. In some cases, rubber having the same wear resistance is used.
[0021]
The rubber composition used for the belt-like cover layer 3 is required to have particularly excellent wear resistance, and the composition is made of a diene rubber containing 50 to 65 parts by weight of BR, and the rubber component 100 With respect to parts by weight, the nitrogen adsorption specific surface area (N 2 SA) is 140 m 2 / g or more and 145 m 2 / g or less , the DBP oil absorption is 100 ml / 100 g or more and 115 ml / 100 g or less , and the CTAB adsorption specific surface area is 140 m 2 / g or more. It is obtained by blending 40 to 65 parts by weight of carbon black having colloidal characteristics adjusted to 146 m 2 / g or less and specific coloring power (Tint) of 130% to 136% .
[0022]
If the weight of BR in the diene rubber or the characteristic value and weight of carbon black is outside the above range, the wear resistance of the rubber composition will be insufficient, and uneven wear on the belt surface will be sufficiently prevented. Can not do it.
[0023]
In addition, said carbon black characteristic is measured by the following method.
(a) Nitrogen adsorption specific surface area (N 2 SA): According to ASTM D3037-88 “Standard Test Method for Carbon Black-Surface Area by Nitrogen Absorption”. The N 2 SA of IRB # 6 by this measurement method is 76 m 2 / g.
(b). CTAB adsorption specific surface area: According to ASTM D3765-89 "Standard Test Method for Carbon Black-CTAB (CET-YLTRIMETHY AMMONIUM BROMIDE) Standard Area". IRB # 6 has a CTAB adsorption specific surface area of 77 m 2 / g according to this measurement method.
(c). DBP oil absorption: According to JIS K6221-82 “Testing method of carbon black for rubber” 6.1.2 A method. The DBP oil absorption of IRB # 6 by this measuring method is 99 ml / 100 g.
(d) Specific tinting strength (Tint): Measured according to JIS K6221-82 “Testing method of carbon black for rubber” 6.1.3 using IIRB # 3 as a reference sample.
[0024]
( Example)
In order to obtain a material suitable as a rubber composition constituting the belt-shaped cover layer 3, 13 types of samples in which the types and weights of diene rubber and carbon black containing BR were changed were prepared and the wear characteristics were examined. The results are shown in [Table 1] together with the blending ratio of these samples.
[0025]
In [Table 1], whether or not the composition of the belt-like cover layer 4 of the present invention is suitable is classified by the value of “DIN wear amount”, the reference value is 25 mm 3 and the composition is less than that. A sample consisting of a composition having a DIN wear amount of more than 25 mm 3 was indicated as a “comparative example”.
[0026]
The characteristic values of the carbon black used here were as shown in [Table 2].
[0027]
[Table 1]
Figure 0004547827
[0028]
[Table 2]
Figure 0004547827
[0029]
As a result of applying the five types of compositions indicated as "Examples" based on the above experimental results as the belt-like cover layer 3 of the conveyor belt 1 of the present invention, the deviation of the surface of the conveyor belt 1 at the position of the lower end of the skat. It was confirmed that the wear was eliminated.
[0030]
【The invention's effect】
As described above, the conveyor belt according to the present invention has a belt cover which is caused by friction with the lower end of the skirt because the material having excellent wear resistance is disposed on both sides in the width direction of the belt located at the lower end of the skirt. Uneven wear of the layer was suppressed, enabling long-term use of the conveyor belt.
[0031]
Furthermore, since the number of types of rubber used for the belt cover layer was set to two or less, it was possible to prevent a decrease in product life due to peeling between the rubbers.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view in the width direction showing an embodiment of a conveyor belt according to the present invention.
FIG. 2 is a cross-sectional view in the width direction of a conventional conveyor belt.
FIG. 3 is a cross-sectional view in the width direction of another conventional conveyor belt.
[Explanation of symbols]
1 Conveyor belt 2 Center cover layer 3 Strip cover layer 4 Body rubber

Claims (1)

積み荷側の表面に耐摩耗性に優れたゴム組成物からなるカバー層を積層し、該カバー層の幅方向両側域にそれぞれ積み荷落下防止用のスカートを対設した鉱石運搬用コンベヤベルトであって、
前記カバー層を幅方向中央域に配置した中央カバー層と幅方向両側域に前記スカートに対向するように配置した帯状カバー層とから形成し、該帯状カバー層を構成するゴム組成物を、ゴム成分がBRを50〜65重量含むジエン系ゴムであって、該ゴム成分100重量部に対して、窒素吸着比表面積が140m/g以上145m /g以下、DBP吸油量が100ml/100g以上115ml/100g以下、CTAB吸着比表面積が140m/g以上146m /g以下及び比着色力が130%以上136%以下であるカ−ボンブラックを40〜65重量部配合した組成物にした鉱石運搬用コンベヤベルト。
A conveyor belt for transporting ores in which a cover layer made of a rubber composition having excellent wear resistance is laminated on the surface on the load side, and skirts for preventing load drop are respectively provided on both sides in the width direction of the cover layer. ,
A rubber composition comprising a central cover layer in which the cover layer is disposed in the central region in the width direction and a belt-shaped cover layer disposed to face the skirt in both lateral regions in the width direction. The component is a diene rubber containing 50 to 65 parts by weight of BR, wherein the nitrogen adsorption specific surface area is 140 m 2 / g to 145 m 2 / g and the DBP oil absorption is 100 ml / 100 g with respect to 100 parts by weight of the rubber component. A composition containing 40 to 65 parts by weight of carbon black having 115 ml / 100 g or less , a CTAB adsorption specific surface area of 140 m 2 / g to 146 m 2 / g and a specific coloring power of 130% to 136% . Conveyor belt for ore transport.
JP2001116614A 2001-04-16 2001-04-16 Ore conveyor belt Expired - Fee Related JP4547827B2 (en)

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KR102094351B1 (en) * 2019-01-02 2020-03-30 (주)화승엑스윌 Conveyor belt comprising a wear resistance member by a skirt board and manufacturing method thereof
KR102138281B1 (en) * 2020-02-27 2020-07-28 주식회사 케이이씨 Skirt apparatus for conveyor belt

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JP5920241B2 (en) * 2013-02-22 2016-05-18 横浜ゴム株式会社 Manufacturing method of laminate
CN110745459B (en) * 2019-11-21 2024-03-15 江苏凯嘉橡胶科技股份有限公司 Non-homogeneous section conveyer belt

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102094351B1 (en) * 2019-01-02 2020-03-30 (주)화승엑스윌 Conveyor belt comprising a wear resistance member by a skirt board and manufacturing method thereof
KR102138281B1 (en) * 2020-02-27 2020-07-28 주식회사 케이이씨 Skirt apparatus for conveyor belt

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