WO2017169465A1 - コンベヤベルト用繊維補強層およびコンベヤベルト - Google Patents
コンベヤベルト用繊維補強層およびコンベヤベルト Download PDFInfo
- Publication number
- WO2017169465A1 WO2017169465A1 PCT/JP2017/007810 JP2017007810W WO2017169465A1 WO 2017169465 A1 WO2017169465 A1 WO 2017169465A1 JP 2017007810 W JP2017007810 W JP 2017007810W WO 2017169465 A1 WO2017169465 A1 WO 2017169465A1
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- WO
- WIPO (PCT)
- Prior art keywords
- conveyor belt
- width direction
- fiber
- belt
- elongation
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
- B65G15/32—Belts or like endless load-carriers made of rubber or plastics
- B65G15/34—Belts or like endless load-carriers made of rubber or plastics with reinforcing layers, e.g. of fabric
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
Definitions
- the present invention relates to a fiber reinforced layer for a conveyor belt and a conveyor belt, and more particularly to a fiber reinforced layer for a conveyor belt and a conveyor belt that can improve tear resistance at both ends in the width direction of the conveyor belt.
- both ends in the belt width direction are bent upwards with respect to the center and used in a trough shape. For this reason, tensile strain is larger at both ends in the belt width direction than at the center, and tearing is likely to occur due to this.
- Patent Document 1 in order to improve productivity without impairing the buckling resistance of the core body, the warp and weft yarns of the core body of the plain woven structure are made non-twisted and the elongation of the conveyor belt is limited to a specific range. It has been proposed.
- patent document 2 in order to improve the quality of the core which employ
- An object of the present invention is to provide a fiber reinforcing layer for a conveyor belt and a conveyor belt capable of improving the tear resistance at both ends in the width direction of the conveyor belt.
- the fiber reinforcement layer for a conveyor belt according to the present invention is a fiber reinforcement layer for a conveyor belt having a woven structure in which warp yarns extend in the longitudinal direction and weft yarns extend in the width direction.
- the elongation at both ends in the width direction at 1/10 load of the cutting load in the longitudinal direction is 110% to 200% of the elongation at the center in the width direction.
- the conveyor belt according to the present invention is characterized in that the fiber reinforcing layer for the conveyor belt is embedded as a core body with the extending direction of the warp yarn as a longitudinal direction of the belt.
- the elongation with a relatively low tensile load in the longitudinal direction is relatively large at both ends. Therefore, if this fiber reinforcing layer is embedded in the conveyor belt as a core body with the extending direction of the warp yarn as the belt longitudinal direction, the elongation at both ends in the belt width direction becomes relatively large. As a result, even if the conveyor belt is used in a trough shape, the tensile strain at both ends in the belt width direction is relieved, so that the tear resistance at both ends in the belt width direction can be improved.
- the woven structure may be a 2/2 broken twill structure. This is advantageous for improving the impact resistance of the conveyor belt.
- the warp yarn at both ends in the width direction is made of, for example, polyamide fiber, and the warp yarn at the center portion in the width direction is made of, for example, polyester fiber. According to this specification, in a state where the conveyor belt is in a trough shape, the elongation at both ends in the belt width direction is relatively easily increased.
- the core body has a multilayer structure in which a plurality of reinforcing layers are laminated, and the outermost reinforcing layer of the multilayer structure can be a fiber reinforcing layer for the conveyor belt. .
- the effect by the fiber reinforcement layer of this invention can be acquired efficiently.
- FIG. 1 is a cross-sectional view illustrating a conveyor belt in which a fiber reinforcing layer for a conveyor belt according to the present invention is embedded.
- FIG. 2 is a plan view of the conveyor belt of FIG.
- FIG. 3 is an explanatory view illustrating the fiber reinforcing layer of FIG.
- FIG. 4 is an explanatory view illustrating a state in which the conveyor belt of FIG. 1 is stretched.
- FIG. 5 is a cross-sectional view taken along the line AA in FIG.
- a conveyor belt fiber reinforcing layer 3 of the present invention (hereinafter referred to as a fiber reinforcing layer 3) is embedded as a core body 2 in the conveyor belt 1 of the present invention.
- the core body 2 is a member that bears the tension generated in the stretched conveyor belt 1.
- An upper cover rubber 6 and a lower cover rubber 7 are disposed above and below the core body 2, respectively, and the core body 2, the upper cover rubber 6 and the lower cover rubber 7 are integrated by vulcanization adhesion.
- the core body 2 is continuous in the belt longitudinal direction, and the dimension in the width direction is slightly smaller than the belt width. Thereby, the width direction both ends of the conveyor belt 1 are ear rubber in which the core body 2 does not exist.
- the core body 2 has a four-layer structure in which one layer of the fiber reinforcement layer 3 of the present invention and three layers of another fiber reinforcement layer 3a are laminated.
- the fiber reinforcing layer 3 of the present invention is the outermost reinforcing layer of the core body 2.
- the number of laminated fiber reinforced layers 3 and 3a constituting the core body 2 is determined by the required performance (rigidity, elongation, etc.) for the conveyor belt 1, and is not limited to the four layers as in this embodiment. Multiple layers can also be used.
- the fiber reinforcing layer 3 of the present invention has a woven structure in which the warp 4 extends in the longitudinal direction and the weft 5 extends in the width direction.
- the fiber reinforcing layer 3 is embedded with the extending direction of the warp yarns 4 being the belt longitudinal direction. That is, the longitudinal direction of the warp 4 is the longitudinal direction of the conveyor belt 1, and the longitudinal direction of the weft 5 is the width direction of the conveyor belt 1.
- the woven structure of the fiber reinforcing layer 3 is a 2/2 broken twill structure.
- other woven structures such as a plain woven structure may be employed.
- the elongation E1 at both ends R1 in the width direction at the time of 1/10 load of the longitudinal cutting load of the fiber reinforcing layer 3 is larger than the elongation E2 in the center R2 in the width direction.
- the elongation E2 is 110% or more and 200% or less.
- the elongation at the time of 1/10 load of the cutting load in the longitudinal direction of the fiber reinforcing layer 3 is measured, for example, by a test based on a tensile test of a belt of JIS K6322.
- the center portion R2 in the width direction of the fiber reinforcement layer 3 is, for example, a region of about 50% to 60% of the total width WR of the fiber reinforcement layer 3 with the center CR in the width direction of the fiber reinforcement layer 3 as the center. Since both ends R1 in the width direction are regions other than the center portion R2 in the width direction, they are regions of about 20% to 25% of the total width WR from both ends in the width direction of the fiber reinforcement layer 3, respectively.
- the overall width WR of the core body 2 (fiber reinforcing layer 3) is slightly smaller than the overall width WB of the conveyor belt 1 and is substantially the same.
- the width direction center CR and the belt width direction center CB are substantially coincident with each other, the width direction both ends R1 of the fiber reinforcing layer 3 are embedded in the belt width direction both ends Z1 of the conveyor belt 1, and the conveyor belt 1
- the width direction center portion R2 of the fiber reinforcement layer 3 is embedded in the belt width direction center portion Z2.
- the material of the warp 4 at each of the end portions R1 in the width direction and the center portion R2 in the width direction In other words, a material having a relatively large elongation is used for both ends R1 in the width direction.
- the warp yarn 4 at both ends R1 in the width direction is made of polyamide fiber
- the warp yarn 4 at the center portion R2 in the width direction is made of polyester fiber.
- a multifilament yarn obtained by twisting a plurality of polyamide fibers can be used for the warp yarns 4 at both ends R1 in the width direction, or a monofilament yarn can be used.
- a multifilament yarn obtained by twisting a plurality of polyester fibers can be used, or a monofilament yarn can be used.
- polyamide fibers include nylon 6, nylon 66, and the like.
- the conveyor belt 1 is used by being stretched between pulleys 8a and 8b as illustrated in FIGS.
- the belt width direction both ends Z1 are supported at the lower surface by the support roller 9 whose rotation axis is inclined at a predetermined angle a with respect to the horizontal, and the belt width direction central portion Z2 is rotated.
- the lower surface is supported by a support roller 9 whose axis is horizontal.
- the tension applied to the core body 2 is relatively greater at the belt width direction both ends Z1 (width direction both ends R1) than the belt width direction center portion Z2 (width direction center portion R2).
- the tensile strain is larger at the belt width direction both ends Z1 (width direction both ends R1) than at the belt width direction center Z2 (width direction center R2), so that tearing is likely to occur. That is, tearing extending in the belt width direction is likely to occur at both ends Z1 in the belt width direction due to relatively large tensile strain.
- the fiber reinforcing layer 3 embedded as the core body 2 has an elongation at the time of 1/10 of the longitudinal cutting load of the fiber reinforcing layer 3 at the width direction both ends R1 in the width direction. It is relatively larger than the central portion R2. Therefore, even if the conveyor belt 1 is used in a trough shape, the fiber reinforcing layer 3 extends relatively greatly at the belt width direction both ends Z1 (width direction both ends R1), so that the belt width direction both ends Z1 Tensile strain is relieved. Accordingly, it becomes possible to improve the tear resistance of the belt width direction both ends Z1.
- the elongation at the time of 1/10 load of the longitudinal cutting load of the fiber reinforcing layer 3 is used because the magnitude of this 1/10 load is the core 2 of the stretched conveyor belt 1. This is because (fiber reinforcing layers 3, 3a) is at a level that is relatively close to the tension that is normally borne.
- all the reinforcing layers may be the fiber reinforcing layer 3 of the present invention, but only a part of the fiber reinforcing layer of the present invention is used in order to reduce costs. 3 and the rest can be another inexpensive general-purpose reinforcing layer 3a.
- the outermost peripheral layer is the fiber reinforcing layer 3 of the present invention.
- the first and second layers from the outermost periphery are used as the fiber reinforcing layer 3 of the present invention.
- the outermost reinforcing layer has the largest tensile strain. Therefore, when the fiber reinforcing layer 3 of the present invention is used as the outermost reinforcing layer, the above-described effect of the fiber reinforcing layer 3 can be efficiently obtained while minimizing the amount of the fiber reinforcing layer 3 used. .
- the impact resistance of the conveyor belt 1 can be improved as compared with a plain woven structure or the like.
- the tearing in the conveyor belt 1 is basically caused by a local stress concentration caused by the loaded article 10, which may cause the conveyor belt 1 to break.
- the plain weave structure when the stress is concentrated, one warp and one weft intersect each other, so all loads are applied to each one.
- two warps and wefts each. Since there is a part that is aligned, the impact can be distributed to the two. Therefore, the conveyor belt 1 (particularly the upper cover rubber 6 and the fiber reinforcing layer 3) is hardly damaged.
- Table 1 Six types (conventional examples, comparative examples 1 and 2 and examples 1 to 3) shown in Table 1 were produced as samples of the fiber reinforced layer for the conveyor belt.
- the weft yarn of all samples was polyester fiber.
- the elongation at 1/10 load in Table 1 is the elongation at 1/10 load of the cutting load with respect to the extending direction of the warp yarn of each sample, and the elongation E1 and the width direction at the end in the width direction.
- the elongation E2 at the center was measured.
- the width direction both ends dimension / full width in Table 1 is the total value of the width dimensions at both ends in the width direction.
- the total width (the total value of the width dimensions at both ends in the width direction and the width dimension at the center in the width direction) ) Divided by ().
- PET means polyester
- N66 means nylon 66.
- Creep performance was evaluated by continuously applying a predetermined tensile force to the cut samples of each conveyor belt in the longitudinal direction of the belt and measuring the elongation in the longitudinal direction of the belt after a predetermined time.
- the result of the conventional belt 1 was evaluated with a reference index of 100. The larger the index value, the smaller the creep elongation and the better.
- Example Belts 1 to 3 have improved tear resistance at both ends in the belt width direction and the creep performance is equivalent to that of the conventional belt. Moreover, about the impact resistance of the width direction center part, Example belt 1 is equivalent to a prior art belt, and it turns out that Example belts 2 and 3 are improved compared with a prior art example.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Belt Conveyors (AREA)
- Woven Fabrics (AREA)
Abstract
Description
それぞれのコンベヤベルトのカットサンプルを用いて、コンベヤベルトの幅方向端部でのベルト幅方向に対する耐引き裂き性を評価した。この評価測定は、所定の引き裂きが生じるまでに要するエネルギーを算出し、算出したエネルギーの大きさを指数で示した。引き裂き抵抗力の測定は、JIS L1096に準拠した方法で行った。従来例ベルト1の結果を基準の指数100にして評価した。指数の数値が大きい程、耐引き裂き性に優れていることを意味する。
それぞれのコンベヤベルトのカットサンプルを用いて、コンベヤベルトの幅方向中央部における耐衝撃性を評価した。この評価測定は、下端が尖った所定重量の重りを水平に張設したコンベヤベルトの上カバーゴムの上に落下させて、重りがコンベヤベルトを厚さ方向に貫通した際の落下高さを測定した。従来例ベルト1の結果を基準の指数100にして評価した。数値の数値が大きい程、耐衝撃性に優れていることを意味する。
それぞれのコンベヤベルトのカットサンプルに、ベルト長手方向に所定の引張り力を負荷し続けて、所定時間後のベルト長手方向の伸びを測定してクリープ性能を評価した。従来例ベルト1の結果を基準の指数100にして評価した。指数の数値が大きい程、クリープによる伸びが小さくて優れていることを意味する。
2 心体
3 繊維補強層
3a 他の繊維補強層
4 縦糸
5 横糸
6 上カバーゴム
7 下カバーゴム
8a、8b プーリ
9 支持ローラ
10 搬送物
Claims (5)
- 縦糸が長手方向に延在し、横糸が幅方向に延在する織構造のコンベヤベルト用繊維補強層において、
前記繊維補強層の長手方向の切断荷重の1/10荷重時の幅方向両端部での伸度が、幅方向中央部での伸度の110%以上200%以下であることを特徴とするコンベヤベルト用繊維補強層。 - 前記織構造が2/2破れ綾織構造である請求項1に記載のコンベヤベルト用繊維補強層。
- 前記幅方向両端部における前記縦糸がポリアミド繊維からなり、前記幅方向中央部における前記縦糸がポリエステル繊維からなる請求項1または2に記載のコンベヤベルト用繊維補強層。
- 請求項1~3のいずれかに記載のコンベヤベルト用繊維補強層が、前記縦糸の延在方向をベルト長手方向にして心体として埋設されているコンベヤベルト。
- 前記心体が複数の補強層を積層した複層構造であり、この複層構造の最外周の補強層が前記コンベヤベルト用繊維補強層である請求項4に記載のコンベヤベルト。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2017242170A AU2017242170A1 (en) | 2016-03-31 | 2017-02-28 | Fiber-reinforced layer for conveyor belt, and conveyor belt |
CN201780016521.8A CN108712991A (zh) | 2016-03-31 | 2017-02-28 | 传动带用纤维增强层及传动带 |
Applications Claiming Priority (2)
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JP2016-071333 | 2016-03-31 | ||
JP2016071333A JP6724489B2 (ja) | 2016-03-31 | 2016-03-31 | コンベヤベルト用繊維補強層およびコンベヤベルト |
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WO2017169465A1 true WO2017169465A1 (ja) | 2017-10-05 |
Family
ID=59964114
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PCT/JP2017/007810 WO2017169465A1 (ja) | 2016-03-31 | 2017-02-28 | コンベヤベルト用繊維補強層およびコンベヤベルト |
Country Status (4)
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JP (1) | JP6724489B2 (ja) |
CN (1) | CN108712991A (ja) |
AU (1) | AU2017242170A1 (ja) |
WO (1) | WO2017169465A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018203497A (ja) * | 2017-06-07 | 2018-12-27 | アンビック株式会社 | 低伸縮生地 |
Citations (5)
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JPH03502916A (ja) * | 1987-12-18 | 1991-07-04 | ティングスコグ,レナート | ベルト・コンベアおよびそのコンベア・ベルト |
JPH04133611U (ja) * | 1991-05-31 | 1992-12-11 | 石川島播磨重工業株式会社 | 急傾斜・垂直コンベア用ベルト |
JP2004026385A (ja) * | 2002-06-25 | 2004-01-29 | Yokohama Rubber Co Ltd:The | コンベヤべルトの構造 |
JP2012035981A (ja) * | 2010-08-09 | 2012-02-23 | Bridgestone Corp | コンベヤベルト |
EP2829495A1 (en) * | 2013-07-23 | 2015-01-28 | Habasit AG | Abrasion-resistant belt |
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JPS599239A (ja) * | 1982-07-05 | 1984-01-18 | 三ツ星ベルト株式会社 | ベルト用織物 |
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JP2005206962A (ja) * | 2004-01-21 | 2005-08-04 | Yokohama Rubber Co Ltd:The | ゴム補強用すだれ織物 |
US7789221B2 (en) * | 2008-09-26 | 2010-09-07 | Laitram, L.L.C. | Living-hinge conveyor belt |
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JP2014201853A (ja) * | 2013-04-05 | 2014-10-27 | 横浜ゴム株式会社 | コンベヤベルト用繊維補強層 |
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2016
- 2016-03-31 JP JP2016071333A patent/JP6724489B2/ja active Active
-
2017
- 2017-02-28 AU AU2017242170A patent/AU2017242170A1/en not_active Abandoned
- 2017-02-28 WO PCT/JP2017/007810 patent/WO2017169465A1/ja active Application Filing
- 2017-02-28 CN CN201780016521.8A patent/CN108712991A/zh not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH03502916A (ja) * | 1987-12-18 | 1991-07-04 | ティングスコグ,レナート | ベルト・コンベアおよびそのコンベア・ベルト |
JPH04133611U (ja) * | 1991-05-31 | 1992-12-11 | 石川島播磨重工業株式会社 | 急傾斜・垂直コンベア用ベルト |
JP2004026385A (ja) * | 2002-06-25 | 2004-01-29 | Yokohama Rubber Co Ltd:The | コンベヤべルトの構造 |
JP2012035981A (ja) * | 2010-08-09 | 2012-02-23 | Bridgestone Corp | コンベヤベルト |
EP2829495A1 (en) * | 2013-07-23 | 2015-01-28 | Habasit AG | Abrasion-resistant belt |
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JP2018203497A (ja) * | 2017-06-07 | 2018-12-27 | アンビック株式会社 | 低伸縮生地 |
Also Published As
Publication number | Publication date |
---|---|
CN108712991A (zh) | 2018-10-26 |
JP6724489B2 (ja) | 2020-07-15 |
JP2017179668A (ja) | 2017-10-05 |
AU2017242170A1 (en) | 2018-09-27 |
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