JPH08207163A - Abrasion-resistant hose - Google Patents
Abrasion-resistant hoseInfo
- Publication number
- JPH08207163A JPH08207163A JP1482295A JP1482295A JPH08207163A JP H08207163 A JPH08207163 A JP H08207163A JP 1482295 A JP1482295 A JP 1482295A JP 1482295 A JP1482295 A JP 1482295A JP H08207163 A JPH08207163 A JP H08207163A
- Authority
- JP
- Japan
- Prior art keywords
- hose
- rubber
- polyethylene sheet
- sheet layer
- molecular weight
- 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.)
- Withdrawn
Links
- 238000005299 abrasion Methods 0.000 title abstract description 7
- 229920001971 elastomer Polymers 0.000 claims abstract description 46
- 239000005060 rubber Substances 0.000 claims abstract description 46
- 239000004698 Polyethylene Substances 0.000 claims abstract description 32
- -1 polyethylene Polymers 0.000 claims abstract description 32
- 229920000573 polyethylene Polymers 0.000 claims abstract description 32
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 10
- 239000012783 reinforcing fiber Substances 0.000 abstract description 5
- 239000004576 sand Substances 0.000 abstract description 5
- 239000004677 Nylon Substances 0.000 abstract description 4
- 229920001778 nylon Polymers 0.000 abstract description 4
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 35
- 238000005086 pumping Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、生コンクリート、土
砂、粉体やガス化する液体を輸送する耐摩耗性・気密性
ホースに係わるものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wear-resistant and airtight hose for transporting ready-mixed concrete, earth and sand, powder and liquid which is gasified.
【０００２】[0002]
【従来の技術】例えば、生コンクリート圧送に使用され
る真空式スクイズ・ポンプに使われるホースにあって
は、ポンプのローラとホースとの摩擦によるホース最外
面層の摩耗と、生コンクリートが流動する時の最内面ゴ
ム層との摩耗が激しく、従ってホースの最外面と最内面
に耐摩耗性に優れた天然ゴム、スチレン- ブタジエン共
重合ゴム等が使用されている。しかしながら、これらゴ
ム製のホースにあっては、前記ゴムを使用しているにも
拘わらず耐摩耗性の面で十分満足されるものはない。ま
た、ガス化する流体がホースの内面を通過する際、ゴム
を透過して補強層の接着面を破壊してしまうという問題
も生じている。2. Description of the Related Art For example, in a hose used in a vacuum type squeeze pump used for pumping fresh concrete, the outermost surface layer of the hose is abraded by friction between the roller of the pump and the hose, and the fresh concrete flows. At this time, the innermost rubber layer is heavily worn. Therefore, natural rubber, styrene-butadiene copolymer rubber, etc., which have excellent wear resistance, are used on the outermost and innermost surfaces of the hose. However, none of these rubber hoses is sufficiently satisfactory in terms of wear resistance despite the use of the rubber. Further, when the fluid to be gasified passes through the inner surface of the hose, there is a problem that it penetrates the rubber and breaks the adhesive surface of the reinforcing layer.
【０００３】この点、ホースの最外面及び最内面にポリ
エチレンシート層を配置させることは、耐摩耗性等の改
良に有効であることは、特開平4-191042号公報において
既に提案したとおりである。In this respect, arranging the polyethylene sheet layers on the outermost and innermost surfaces of the hose is effective for improving the wear resistance and the like, as already proposed in JP-A-4-91042. .
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、ポリエ
チレンシート層をホースの内面の表面に配設すること
は、耐摩耗性の向上は著しいが、一旦内部を鋭利な石な
どで傷つけられると、さらに圧力により異物が侵入して
傷が深くなり、ついには補強層に達する場合には、ここ
から水分が入り込み補強層にダメージを与えてしまうと
いうことがある。また、ホースの両端には一般的に金具
を取りつけるが、この際ポリエチレンシート層が内面ゴ
ム表面にあると接着しないという問題がある。However, the provision of the polyethylene sheet layer on the inner surface of the hose significantly improves the wear resistance, but once the interior is damaged by sharp stones, the pressure is further increased. As a result, foreign matter may invade to deepen the scratches, and eventually, when reaching the reinforcing layer, water may enter from there to damage the reinforcing layer. Further, although metal fittings are generally attached to both ends of the hose, there is a problem that the polyethylene sheet layer does not adhere to the inner rubber surface at this time.
【０００５】さらに、ポリエチレンシート層をホ−スの
外面ゴム表面に配設する場合、ホース外面に凹凸がある
場合には、均一に巻つけたり貼ることができないという
問題がある。Further, when the polyethylene sheet layer is provided on the outer rubber surface of the hose, there is a problem that if the outer surface of the hose has irregularities, it cannot be evenly wound or attached.
【０００６】[0006]
【課題を解決するための手段】本発明は上記の目的を達
成するために次の構成を採用したものである。即ち、内
面ゴム及び外面ゴムとそれらの間に配設した耐圧補強層
を有するホースであって、少なくとも内面ゴムもしくは
外面ゴムのいずれか一方の内部に分子量１００万以上の
ポリエチレンシート層を一体的に配設している。さらに
ホースの少なくとも最内面または最外面の表面の一方に
分子量１００万以上のポリエチレンシート層を一体的に
配設すれば一層耐摩耗性とゴムへの気体透過を減少でき
るので好ましい。ここで使用されるポリエチレンシート
層は、その分子量が１００万以上、好ましくは３００万
以上の超高分子量のものであり、そして使用されるポリ
エチレンシート層の厚さは０．０５〜０．３ｍｍ、好ま
しくは０．０８〜０．２ｍｍである。The present invention adopts the following constitution in order to achieve the above object. That is, a hose having an inner rubber, an outer rubber, and a pressure-proof reinforcing layer arranged between them, and a polyethylene sheet layer having a molecular weight of 1,000,000 or more is integrally formed inside at least one of the inner rubber and the outer rubber. It is arranged. Further, it is preferable to integrally dispose a polyethylene sheet layer having a molecular weight of 1,000,000 or more on at least one of the innermost surface and the outermost surface of the hose because abrasion resistance and gas permeation into rubber can be further reduced. The polyethylene sheet layer used here has an ultrahigh molecular weight of 1,000,000 or more, preferably 3,000,000 or more, and the thickness of the polyethylene sheet layer used is 0.05 to 0.3 mm, It is preferably 0.08 to 0.2 mm.
【０００７】[0007]
【作用】内面ゴムの内部に分子量１００万以上のポリエ
チレンシート層を一体的に配設していれば、内面ゴムが
鋭利な石などで傷つけられて、さらに圧力によってその
傷に砂などが侵入してきてもポリエチレンシート層で食
い止められ傷はそれ以上成長しない。そのため、そこか
ら水分等が補強層に達して補強層を破壊することがな
い。これはポリエチレンシートがアイゾット衝撃試験で
は、”破壊しない”というレベルの耐衝撃性を持ち、破
断点抗張力も４００〜５００KGf/cM2 と大きく、耐摩耗
性が炭素鋼の約７倍と大きいことにより、最初に鋭利な
石などでポリエチレンシート層が傷つかない限り砂等で
は傷がつかないことによる。[Function] If a polyethylene sheet layer having a molecular weight of 1,000,000 or more is integrally provided inside the inner rubber, the inner rubber will be damaged by sharp stones, and sand or the like will intrude into the damage by pressure. However, it is stopped by the polyethylene sheet layer and the scratch does not grow any more. Therefore, the moisture or the like does not reach the reinforcing layer and destroy the reinforcing layer. In this polyethylene sheet Izod impact test has a level impact resistance of "no break", break tensile strength also 400~500KGf / cM 2 greatly, abrasion resistance by as large as about 7 times the carbon steel , Unless the polyethylene sheet layer is scratched with sharp stones first, sand will not scratch it.
【０００８】また、内面ゴムの内部にポリエチレンシー
ト層を配設した場合ホースの両端に金具を取りつける
際、金具との接着性が取れる上、耐摩耗性の向上と気体
透過性を減少させるということが同時に達成することが
できる。Further, when the polyethylene sheet layer is provided inside the inner rubber, when the metal fittings are attached to both ends of the hose, not only the adhesiveness with the metal fittings can be obtained but also the abrasion resistance is improved and the gas permeability is reduced. Can be achieved at the same time.
【０００９】外面ゴムの内部に分子量１００万以上のポ
リエチレンシート層を一体的に配設していれば、ホース
外面の形状に凹凸がある場合でも、ポリエチレンシート
層の半径方向外側ゴム（最外側外面ゴム）によってポリ
エチレンシート層を覆うため後からポリエチレンシート
層が剥れることがないと同時に最外面にポリエチレンシ
ート層を配設したのと同等の耐摩耗性の向上が図れる。If the polyethylene sheet layer having a molecular weight of 1,000,000 or more is integrally provided inside the outer rubber, even if the outer surface of the hose has irregularities, the outer rubber in the radial direction of the polyethylene sheet layer (outermost outer surface) Since the polyethylene sheet layer is covered with rubber, the polyethylene sheet layer is not peeled off later, and at the same time, abrasion resistance can be improved to the same extent as when the polyethylene sheet layer is provided on the outermost surface.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面に基づき、説明
する。図１は本発明のホースＨの第１実施例を示す一部
切欠拡大断面図である。さて、本実施例におけるホース
Ｈの構造は、内径１００ｍｍの生コンクリート圧送用ホ
ースとして使用に供されるものであって、厚さ６ｍｍの
内面ゴム１ａの外側に分子量４００万、厚さ０．１ｍｍ
の超高分子量ポリエチレンシート５を配置し、さらにそ
の外側に厚さ６ｍｍの内面ゴム１ｂを配置している。そ
して内面ゴム１ｂの外側に補強繊維２ａとしてスダレ状
のナイロンコードを巻き付け、この上に２．６ｍｍ径の
補強ワイヤー３をスパイラル状に巻き上げてある。そし
てこの上に補強繊維２ｂとしてスダレ状のナイロンコー
ドを巻き付け、さらに外傷からの保護に外面ゴム３を２
ｍｍの厚さで配置した構造である。本発明に置いて、例
えば図１に示すホースは、その剛性は従来品に比べて１
０％程度の増加になるだけであり、ハンドリングも問題
なく、また製造上においても工程が増加はするが問題の
ないものである。そして、性能においてもポリエチレン
シート層の配設の効果は大きく、従来品に比べ１５０％
以上の耐久性を示した。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway enlarged sectional view showing a first embodiment of a hose H of the present invention. Now, the structure of the hose H in the present embodiment is used as a hose for pumping fresh concrete having an inner diameter of 100 mm, and has a molecular weight of 4,000,000 and a thickness of 0.1 mm on the outer side of the inner rubber 1a having a thickness of 6 mm.
The ultra-high molecular weight polyethylene sheet 5 is placed, and the inner rubber 1b having a thickness of 6 mm is placed outside the sheet. Then, a fold-shaped nylon cord is wound as the reinforcing fiber 2a on the outer side of the inner rubber 1b, and a reinforcing wire 3 having a diameter of 2.6 mm is spirally wound on this. Then, a fold-back nylon cord is wound around this as the reinforcing fiber 2b, and the outer rubber 3 is further attached to protect it from external damage.
The structure is arranged with a thickness of mm. In the present invention, for example, the hose shown in FIG. 1 has a rigidity that is 1% that of conventional products.
The increase is only about 0%, there is no problem in handling, and there is no problem in the manufacturing process although the number of processes increases. Also, in terms of performance, the effect of arranging the polyethylene sheet layer is large, and is 150% higher than the conventional product
The above durability was exhibited.
【００１１】図２は外面ゴムにポリエチレンシート層を
配設した第２実施例を示すもので、ホースの外面に凹凸
がありポリエチレンシート層を均一に巻つけたり貼るこ
とができなく、しかも外面ゴムの摩耗が激しいコンクリ
ート圧送に用いるポンピングチューブとして使用される
場合には好適な構造である。図３は内面ゴムおよび外面
ゴムの両方の内部にポリエチレンシート層を配設した第
３実施例示す図であり、第１実施例と第２実施例を合わ
せたもので内面ゴムの耐摩耗性の向上または気体透過性
の減少と外面ゴムの摩耗が激しい用途に適する構造であ
る。図４は第１実施例にホースの最外面にポリエチレン
シート層を配設したもので第３実施例と略同じ目的に適
しており、外面に凹凸がない場合に適するものである。FIG. 2 shows a second embodiment in which a polyethylene sheet layer is provided on the outer surface rubber, and the outer surface of the hose has irregularities so that the polyethylene sheet layer cannot be evenly wound or pasted, and the outer surface rubber It is a suitable structure when it is used as a pumping tube for pumping concrete that is subject to severe wear. FIG. 3 is a diagram showing a third embodiment in which a polyethylene sheet layer is provided inside both the inner rubber and the outer rubber, and is a combination of the first embodiment and the second embodiment, showing the abrasion resistance of the inner rubber. This structure is suitable for applications where improvement or reduction of gas permeability and wear of outer rubber are severe. FIG. 4 shows the first embodiment in which a polyethylene sheet layer is provided on the outermost surface of the hose, which is suitable for substantially the same purpose as that of the third embodiment and is suitable for the case where there is no unevenness on the outer surface.
【００１２】[0012]
【発明の効果】以上のように本発明によるホースは前記
したコンクリート圧送用ホースとして、土木・建築現場
で用いられる土砂、汚泥等の液体吸排送用ホースとして
優れた耐摩耗性を示し、またガス化する液体の輸送用ホ
ースとして気体透過性が低く適したものであり、その他
コンクリート圧送に用いるポンピングチューブとしても
優れた耐久性を発揮する。INDUSTRIAL APPLICABILITY As described above, the hose according to the present invention has excellent wear resistance as a hose for pumping concrete as described above, as a hose for sucking and discharging liquid such as earth and sand and sludge used in civil engineering and construction sites, and gas. It has low gas permeability and is suitable as a hose for transporting liquefied liquid, and also exhibits excellent durability as a pumping tube used for concrete concrete pumping.
【図１】本発明の内面ゴムの内部にポリエチレンシート
層を配設した第１実施例を示す一部切欠断面図である。FIG. 1 is a partially cutaway sectional view showing a first embodiment in which a polyethylene sheet layer is provided inside an inner rubber according to the present invention.
【図２】本発明の外面ゴムの内部にポリエチレンシート
層を配設した第２実施例を示す一部切欠断面図である。FIG. 2 is a partially cutaway sectional view showing a second embodiment in which a polyethylene sheet layer is provided inside the outer rubber of the present invention.
【図３】本発明の内面および外面ゴムの内部にポリエチ
レンシート層を配設した第３実施例を示す一部切欠断面
図である。FIG. 3 is a partially cutaway cross-sectional view showing a third embodiment in which a polyethylene sheet layer is provided inside the rubber on the inner surface and the rubber on the outer surface of the present invention.
【図４】本発明の内面ゴムの内部にポリエチレンシート
層を配設し、外表面ゴムにポリエチレンシート層を配設
した第４実施例を示す一部切欠断面図である。FIG. 4 is a partially cutaway sectional view showing a fourth embodiment in which a polyethylene sheet layer is provided inside the inner rubber and a polyethylene sheet layer is provided on the outer rubber according to the present invention.
Ｈ ホース １ 内面ゴム ２ 補強繊維 ３ 補強ワイヤー ４ 外面ゴム ５ ポリエチレンシート層 H Hose 1 Inner surface rubber 2 Reinforcing fiber 3 Reinforcing wire 4 Outer surface rubber 5 Polyethylene sheet layer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｋ 23:00 105:08 Ｂ２９Ｌ 23:00 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display area B29K 23:00 105: 08 B29L 23:00
Claims (2)
設した耐圧補強層を有するホースであって、少なくとも
前記内面ゴムもしくは前記外面ゴムのいずれか一方の内
部に分子量１００万以上のポリエチレンシート層を一体
的に配設したことを特徴とする耐摩耗性ホース。1. A hose having an inner surface rubber and an outer surface rubber and a pressure resistant reinforcing layer disposed between them, wherein a polyethylene sheet having a molecular weight of 1,000,000 or more is provided inside at least one of the inner surface rubber and the outer surface rubber. A wear-resistant hose characterized in that layers are integrally arranged.
の表面の一方に分子量１００万以上のポリエチレンシー
ト層を一体的に配設したことを特徴とする請求項１に記
載した耐摩耗性ホース。2. The wear resistant hose according to claim 1, wherein a polyethylene sheet layer having a molecular weight of 1,000,000 or more is integrally provided on at least one of the innermost surface and the outermost surface of the hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1482295A JPH08207163A (en) | 1995-01-31 | 1995-01-31 | Abrasion-resistant hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1482295A JPH08207163A (en) | 1995-01-31 | 1995-01-31 | Abrasion-resistant hose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08207163A true JPH08207163A (en) | 1996-08-13 |
Family
ID=11871740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1482295A Withdrawn JPH08207163A (en) | 1995-01-31 | 1995-01-31 | Abrasion-resistant hose |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08207163A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3008251A4 (en) * | 2013-06-12 | 2017-08-09 | Meedl68 LP | Offshore preparation system |
-
1995
- 1995-01-31 JP JP1482295A patent/JPH08207163A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3008251A4 (en) * | 2013-06-12 | 2017-08-09 | Meedl68 LP | Offshore preparation system |
| US9962857B2 (en) | 2013-06-12 | 2018-05-08 | Meedl68, Lp | Off-shore preparation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A761 | Written withdrawal of application |
Free format text: JAPANESE INTERMEDIATE CODE: A761 Effective date: 20040315 |