WO2017022338A1 - コンベヤベルト - Google Patents
コンベヤベルト Download PDFInfo
- Publication number
- WO2017022338A1 WO2017022338A1 PCT/JP2016/067886 JP2016067886W WO2017022338A1 WO 2017022338 A1 WO2017022338 A1 WO 2017022338A1 JP 2016067886 W JP2016067886 W JP 2016067886W WO 2017022338 A1 WO2017022338 A1 WO 2017022338A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- belt
- conveyor belt
- core
- strength
- cover rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/024—Woven fabric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/554—Wear resistance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2433/00—Closed loop articles
- B32B2433/02—Conveyor belts
-
- 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
- B65G2207/00—Indexing codes relating to constructional details, configuration and additional features of a handling device, e.g. Conveyors
- B65G2207/48—Wear protection or indication features
-
- 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
- B65G2812/00—Indexing codes relating to the kind or type of conveyors
- B65G2812/02—Belt or chain conveyors
- B65G2812/02128—Belt conveyors
- B65G2812/02178—Belt conveyors characterised by the material
- B65G2812/02198—Non-metallic belts
-
- 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
- B65G2812/00—Indexing codes relating to the kind or type of conveyors
- B65G2812/02—Belt or chain conveyors
- B65G2812/02128—Belt conveyors
- B65G2812/02217—Belt conveyors characterised by the configuration
Definitions
- the present invention relates to a conveyor belt, and more particularly, to a conveyor belt that can extend the useful life of a conveyor belt by suppressing the occurrence of vertical tearing of the conveyor belt caused by a conveyed product put into an upper cover rubber. is there.
- the canvas used as the core layer is constituted by plain weaving warp and weft, for example.
- the specifications of the warp yarn extending in the belt longitudinal direction and the weft yarn extending in the belt width direction are different (see, for example, paragraph 0023 of Patent Document 1). That is, since the core layer is designed mainly to bear the tension acting on the conveyor belt, the strength in the longitudinal direction of the belt is set appropriately high, but the strength in the belt width direction is set to canvas ( It is set to a very low strength that prevents the warp yarn from being disturbed. For example, the strength in the belt width direction of the core layer is about 15% of the strength in the belt longitudinal direction.
- An object of the present invention is to provide a conveyor belt that can extend the useful life of the conveyor belt by suppressing the occurrence of vertical tearing of the conveyor belt caused by the conveyed product put into the upper cover rubber.
- a conveyor belt according to the present invention includes at least one core body layer made of canvas, and an upper cover rubber and a lower cover rubber respectively positioned above and below the core body layer.
- at least one core layer among the core layers has a belt width direction strength of 30% to 70% of the belt longitudinal direction strength.
- the belt width direction strength of at least one core layer is set to 30% or more and 70% or less of the belt longitudinal direction strength, and the belt width direction strength is significantly higher than that of the conventional belt. Since it is improved, it is advantageous to prevent the longitudinal tearing from occurring in the core layer due to the impact caused by the loaded material. As a result, the core layer can be protected over a long period of time, and the useful life of the conveyor belt can be extended.
- At least the outermost and innermost core layers can have a belt width strength of 30% to 70% of the belt longitudinal strength.
- the core layer closer to the surface of the upper cover rubber tends to be broken by the sharp conveyed product.
- the distortion caused by the impact received from the loaded object increases as the core layer closer to the lower cover rubber in the unsharp conveyed object. Therefore, according to this specification, it is difficult to cause vertical tearing in the core layer disposed at a position where the conditions are relatively severe. Therefore, the useful life of the conveyor belt can be extended while efficiently reinforcing the core layer.
- the belt width direction strength of all the core layers may be 30% or more and 70% or less of the belt longitudinal direction strength. According to this specification, it becomes difficult to damage all the heart layers, so that it becomes easier to prevent vertical tearing from occurring in the heart layers.
- the core layer whose belt width direction strength is not less than 30% and not more than 70% of the belt longitudinal direction strength may be specified to be located only in the central portion in the belt width direction. Since the conveyed product is mainly loaded and placed in the central portion in the belt width direction, according to this specification, it is difficult to cause vertical tearing in the core layer in the central portion in the belt width direction, which is a relatively severe condition. . Therefore, the useful life of the conveyor belt can be extended while efficiently reinforcing the core layer.
- FIG. 1 is a cross-sectional view illustrating a conveyor belt according to the present invention.
- FIG. 2 is a perspective view schematically illustrating the internal structure with a part of the conveyor belt of FIG. 1 cut away.
- FIG. 3 is an explanatory diagram illustrating the core layer of FIG. 1 in plan view.
- FIG. 4 is an explanatory view illustrating the conveyor belt of the present invention stretched between pulleys in a side view.
- FIG. 5 is a cross-sectional view taken along the line AA in FIG.
- FIG. 6 is an explanatory view illustrating the internal structure of the conveyor belt of FIG. 4 in a side view.
- the conveyor belt of the present invention will be described based on the embodiments shown in the drawings.
- the alternate long and short dash line CL indicates the center of the conveyor belt in the belt width direction.
- the conveyor belt 1 of the present invention includes a core body layer 4, and an upper cover rubber 2 and a lower cover rubber 3 that are disposed with the core body layer 4 sandwiched therebetween. These are integrated through a vulcanization process.
- the conveyor belt 1 is configured by appropriately adding other components such as ear rubbers disposed at both ends in the belt width direction.
- the body layer 4 is made of canvas.
- the structure of the core body layer 4 will be described in detail.
- the warp yarn 5 and the weft yarn 6 are formed in a plain weave structure, and the surface thereof is covered with a coat rubber.
- the coat rubber, the upper cover rubber 2 and the lower cover rubber 3 are joined by vulcanization adhesion, and the coat rubber, the warp yarn 5 and the weft yarn 6 are joined.
- the upper cover rubber 2 and the lower cover rubber 3 for example, a rubber composition made of a diene rubber containing at least natural rubber and having good wear resistance with carbon black or the like is used.
- the layer thicknesses of the upper cover rubber 2 and the lower cover rubber 3 are appropriately determined depending on the performance required for the conveyor belt 1.
- Coat rubber is rubber having excellent adhesion.
- the core body layer 4 can be a single layer or a plurality of layers, but it is, for example, about 4 to 8 layers. In this embodiment, four core layers 4a, 4b, 4c and 4d are stacked one above the other.
- the warp 5 for example, polyester fiber, nylon fiber, aramid fiber, vinylon fiber, PBO fiber, high hardness polyalate fiber, or the like is used.
- the weft 6 for example, polyester fiber, nylon fiber, aramid fiber, vinylon fiber, PBO fiber, high-hardness polyarate fiber, or the like is used.
- the material of the warp 5 and the weft 6 can be the same or different.
- the outer diameter of the warp 5 and the weft 6 is, for example, not less than 0.3 mm and not more than 1.5 mm.
- the total thickness of each core layer 4 is not less than 1.0 mm and not more than 3.0 mm, for example.
- the conveyor belt 1 is stretched between pulleys 7a and 7b as illustrated in FIGS. On the carrier side, the conveyor belt 1 is held in the shape of a trough that protrudes downward by the support roller 8, so that the loaded conveyed product C is mainly placed at the center of the upper cover rubber 2 in the belt width direction.
- a predetermined setting tension Ts acts on the conveyor belt 1 stretched around the pulleys 7a and 7b in the longitudinal direction of the belt. Since the tension applied to the conveyor belt 1 is substantially borne by the core body layer 4, a predetermined setting tension Ts always acts in the belt longitudinal direction of the core body layer 4.
- the magnitude of the setting tension Ts varies depending on the specifications of the conveyor belt 1 and is set to an appropriate value at which the conveyor belt 1 operates normally. Accordingly, the belt longitudinal strength FL of the core layer 4 is set to be strong enough to bear the setting tension Ts, and therefore FL >> Ts.
- the belt width direction strength FW is set to be 30% or more and 70% or less of the belt longitudinal direction strength FL. That is, in the present invention, the ratio (FW / FL) of the strength FW in the belt width direction to the strength FL in the belt longitudinal direction of the core body layer 4 is significantly improved as compared with the prior art.
- the warp 5 has a relatively high tensile strength (belt longitudinal strength), and the core layer 4 has a relatively high tensile strength (belt longitudinal strength FL). is doing.
- the belt longitudinal strength per unit width of the core body layer 4 is 250 N / mm or more and 500 N / mm or less per core layer (each core body layer 4a, 4b, 4c, 4d). It is the breaking strength (measured according to JIS K6322) when a test piece formed by cutting with a width of 50 mm in the direction (the extending direction of the weft yarn 6) is pulled in the extending direction of the warp yarn 5.
- the weft yarn 6 is lower than the warp yarn 5, but has a higher tensile strength than that of the conventional yarn. Accordingly, the core layer 4 also has a higher tensile strength (strength FW in the belt width direction). is doing.
- the belt width direction strength per unit width of the core layer 4 is 125 N / mm or more and 250 N / mm or less per core layer (each core layer 4a, 4b, 4c, 4d) This is the breaking strength (measured in accordance with JIS K6322) when a test piece formed by cutting with a width of 50 mm in the direction (the direction in which the warp 5 extends) is pulled in the direction in which the weft 6 extends.
- the belt width direction strength FW is set to 30% or more and 70% or less of the belt longitudinal direction strength FL.
- the upper cover rubber 2 is impacted by the loaded material C.
- the core body layer 4 is pressed by the conveyed product C, and a tensile force acts. That is, since an additional tensile force acts on the warp yarn 5 and the weft yarn 6, if the tensile strength of the weft yarn 6 is relatively small, the weft yarn 6 is damaged or broken. Along with this, longitudinal tearing occurs in the core layer 4 (conveyor belt 1).
- the core body layer 4 is devised by paying attention to the belt width direction strong FW of the core body layer 4 which has not been noticed conventionally. That is, since the core body layer 4 having the belt width direction strength FW of 30% to 70% of the belt longitudinal direction strength FL is provided, the weft 6 is not easily damaged or broken in the core layer 4. ing. Therefore, it is possible to suppress the occurrence of vertical tearing. Therefore, it is advantageous for extending the useful life of the conveyor belt 1.
- the belt width direction strength FW of the core layer 4 is less than 30% of the belt longitudinal direction strength FL, it is difficult to sufficiently prevent the longitudinal tearing.
- the belt width direction strength FW of the core layer 4 is more than 70% of the belt longitudinal direction strength FL, the bending rigidity of the conveyor belt 1 in the belt width direction becomes excessive, and the trough property is lowered (the trough shape is reduced). It becomes difficult.
- the core body layer 4d on the innermost peripheral side has the special specifications described above. Thereby, it becomes easy to avoid that the weft yarn 6 of the core body layer 4d is damaged by the impact of the loaded conveyed product C, which is advantageous in preventing the occurrence of longitudinal tearing.
- the core body layer 4 a closer to the surface of the upper cover rubber 2 is easily broken by the sharp conveyed product C. That is, the outermost peripheral core layer 4a is in a condition that is most easily broken by the sharp conveyed object C. Therefore, it is preferable that the core layer 4a on the outermost peripheral side also has the above-mentioned special specifications. Thereby, it becomes easy to avoid that the weft yarn 6 of the core body layer 4a is damaged by the impact of the loaded conveyed product C, which is advantageous in preventing the occurrence of longitudinal tearing.
- the outermost core body layer 4a and the innermost core body layer 4d have the above-mentioned special specifications. Then, if only the outermost peripheral body layer 4a and the innermost peripheral body layer 4d have the above-mentioned special specifications, the central body layers 4a and 4d disposed at relatively harsh positions are provided. The useful life of the conveyor belt 1 can be increased while reinforcing it efficiently.
- only the outermost peripheral core layer 4a can be set to the special specification described above.
- only the innermost core layer 4d can have the above-mentioned special specifications.
- All the core layers 4a to 4d can be set to the special specifications described above. In this case, the weft yarns 6 of all the core layers 4a to 4d are difficult to be damaged and broken, so that it becomes easier to prevent the occurrence of vertical tearing.
- the above-mentioned special specification core layer 4 can be disposed only in the central portion of the belt width direction.
- the central portion in the belt width direction is a range of the central portion in the belt width direction of about 50% to 80% of the belt width B. In this case, the useful life of the conveyor belt 1 can be extended while efficiently reinforcing the core body layer 4 at the center in the belt width direction, which is a relatively severe condition.
- the belt width direction strength FW of the core body layer 4 By setting the belt width direction strength FW of the core body layer 4 to 30% to 70% of the belt longitudinal direction strength FL, the bending stiffness in the longitudinal direction of the core body layer 4 does not increase. Therefore, in the present invention, the energy required for the operation of the conveyor belt 1 does not increase.
- Test samples (Examples and conventional examples) of the conveyor belts were prepared. The first layer was disposed closest to the surface of the upper cover rubber, and the second layer, the third layer, and the fourth layer were laminated in the lower order in this order. Each test sample was placed on a base stand, and a weight was dropped on the upper cover rubber to confirm the damage condition. The results are shown in Table 1. The mass of the weight was 60 kg, its lower end (contact with the upper cover rubber) was a spherical surface with a radius of 20 mm, and the drop height was set to 1 m.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Belt Conveyors (AREA)
Abstract
Description
2 上カバーゴム
3 下カバーゴム
4、4a、4b、4c、4d 心体層
5 縦糸
6 横糸
7a、7b プーリ
8支持ローラ
Claims (4)
- 帆布で構成された少なくとも1層の心体層と、この心体層を挟んで上下にそれぞれ位置する上カバーゴムおよび下カバーゴムとを備えたコンベヤベルトにおいて、
前記心体層のうち、少なくとも1層の心体層のベルト幅方向強力がベルト長手方向強力の30%以上70%以下であることを特徴とするコンベヤベルト。 - 前記心体層のうち、少なくとも最外周側および最内周側の心体層のベルト幅方向強力がベルト長手方向強力の30%以上70%以下である請求項1に記載のコンベヤベルト。
- すべての前記心体層のベルト幅方向強力がベルト長手方向強力の30%以上70%以下である請求項1に記載のコンベヤベルト。
- ベルト幅方向強力がベルト長手方向強力の30%以上70%以下である前記心体層が、ベルト幅方向で中央部のみに位置している請求項1~3のいずれかに記載のコンベヤベルト。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2016302499A AU2016302499B2 (en) | 2015-07-31 | 2016-06-16 | Conveyor belt |
| US15/741,750 US11001449B2 (en) | 2015-07-31 | 2016-06-16 | Conveyor belt |
| EP16832617.1A EP3330202A4 (en) | 2015-07-31 | 2016-06-16 | FÖRDERBAND |
| CN201680031647.8A CN107614400B (zh) | 2015-07-31 | 2016-06-16 | 传送带 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-152058 | 2015-07-31 | ||
| JP2015152058A JP6762085B2 (ja) | 2015-07-31 | 2015-07-31 | コンベヤベルト |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2017022338A1 true WO2017022338A1 (ja) | 2017-02-09 |
Family
ID=57942795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2016/067886 Ceased WO2017022338A1 (ja) | 2015-07-31 | 2016-06-16 | コンベヤベルト |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US11001449B2 (ja) |
| EP (1) | EP3330202A4 (ja) |
| JP (1) | JP6762085B2 (ja) |
| CN (1) | CN107614400B (ja) |
| AU (1) | AU2016302499B2 (ja) |
| WO (1) | WO2017022338A1 (ja) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12030723B2 (en) * | 2020-11-04 | 2024-07-09 | Contitech Transportbandsysteme Gmbh | Impact absorbing conveyor belt |
| US20250290558A1 (en) * | 2022-05-12 | 2025-09-18 | Bando Chemical Industries, Ltd. | Belt |
| JP2024043613A (ja) * | 2022-09-20 | 2024-04-02 | 横浜ゴム株式会社 | コンベヤベルトおよびその製造方法 |
| CN115504159A (zh) * | 2022-10-19 | 2022-12-23 | 吴善聪 | 一种超高耐磨防撕裂的输送带 |
| CN115744050B (zh) * | 2022-11-17 | 2025-05-23 | 浙江双箭橡胶股份有限公司 | 一种高延伸可小转弯的输送带 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5931144A (ja) * | 1982-06-14 | 1984-02-20 | エヌ・ヴイ・ベカルト・エス・エイ | 弾性体の補強用構造体 |
| JP2008169022A (ja) * | 2007-01-15 | 2008-07-24 | Yokohama Rubber Co Ltd:The | コンベヤベルト |
| JP2009274797A (ja) * | 2008-05-13 | 2009-11-26 | Yokohama Rubber Co Ltd:The | コンベヤベルト |
| WO2015111486A1 (ja) * | 2014-01-22 | 2015-07-30 | ニッタ株式会社 | 平ベルト |
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2015
- 2015-07-31 JP JP2015152058A patent/JP6762085B2/ja active Active
-
2016
- 2016-06-16 AU AU2016302499A patent/AU2016302499B2/en active Active
- 2016-06-16 EP EP16832617.1A patent/EP3330202A4/en not_active Withdrawn
- 2016-06-16 CN CN201680031647.8A patent/CN107614400B/zh active Active
- 2016-06-16 WO PCT/JP2016/067886 patent/WO2017022338A1/ja not_active Ceased
- 2016-06-16 US US15/741,750 patent/US11001449B2/en active Active
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|---|---|---|---|---|
| JPS5931144A (ja) * | 1982-06-14 | 1984-02-20 | エヌ・ヴイ・ベカルト・エス・エイ | 弾性体の補強用構造体 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107614400B (zh) | 2022-09-13 |
| US20180194559A1 (en) | 2018-07-12 |
| EP3330202A4 (en) | 2019-04-24 |
| JP2017030915A (ja) | 2017-02-09 |
| AU2016302499A1 (en) | 2017-12-21 |
| JP6762085B2 (ja) | 2020-09-30 |
| AU2016302499B2 (en) | 2019-06-06 |
| EP3330202A1 (en) | 2018-06-06 |
| US11001449B2 (en) | 2021-05-11 |
| CN107614400A (zh) | 2018-01-19 |
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