CN105442362A - Seven-strand steel cord for engineering tire - Google Patents
Seven-strand steel cord for engineering tire Download PDFInfo
- Publication number
- CN105442362A CN105442362A CN201510991016.8A CN201510991016A CN105442362A CN 105442362 A CN105442362 A CN 105442362A CN 201510991016 A CN201510991016 A CN 201510991016A CN 105442362 A CN105442362 A CN 105442362A
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- CN
- China
- Prior art keywords
- steel
- strands
- twisting
- cord
- sth
- 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.)
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Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/0613—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the rope configuration
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0693—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a strand configuration
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/10—Rope or cable structures
- D07B2201/1028—Rope or cable structures characterised by the number of strands
- D07B2201/1032—Rope or cable structures characterised by the number of strands three to eight strands respectively forming a single layer
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2046—Tire cords
Landscapes
- Ropes Or Cables (AREA)
- Tires In General (AREA)
Abstract
The invention discloses a seven-strand steel cord for an engineering tire. The seven-strand steel cord is formed by weaving and twisting steel wires and comprises a core wire strand and outer layer strands, the seven-strand steel cord is formed by weaving and twisting seven strands of steel wires and then adding a winding steel wire, and the twisting direction of the winding steel wire is the S twisting direction. After the seven strands of steel wires are twisted, the structure that the six outer layer strands are evenly arrayed around the core wire strand, and the twisting direction is the Z twisting direction, and the section is round. The core wire strand and the outer layer strands are each formed by weaving and twisting five steel wires, and the twisting directions are each the S twisting direction. The steel cord is high in strength, resistant to puncture and good in wear resistance, and while breaking force of the steel cord is improved, the proportion of the steel cord in the tire is reduced.
Description
Technical field
The present invention relates to engineering machinery radial seven strands of all-steel cords.
Background technology
The intensity that the demand driving of market to more lightweight tire steel steel for tyre cord silk improves constantly, its intensity also by regular tenacity, high strength to superhigh intensity and very high strength future development, by adopting the steel cord of more high strength, can guarantee that tire is when some strength, the consumption of steel cord in cord can not only be reduced, also can reduce the consumption of sizing material simultaneously, achieve the deadweight reducing tire, thus reduce the resistance to rolling of tire, reach saving oil consumption, and reduce the object of CO2 emission.The strength grade of steel wire in steel cord, according to the requirement in ISO17832:2009, the intensity of individual wire can define (volume unit: MPa by following formula; Steel wire diameter unit: mm).
Regular tenacity: tensile strength of wire value=3275-2000* steel wire diameter value;
High strength: tensile strength of wire value=3650-2000* steel wire diameter value;
Superhigh intensity: tensile strength of wire value=4000-2000* steel wire diameter value;
Extra High Strength: tensile strength of wire value=4350-2000* steel wire diameter value;
In recent years, have benefited from the rapid growth of China's economic and countries in the world to the increase day by day of the mineral resources demands such as coal, copper, iron, Mining At Home And Abroad industry obtains tremendous development, pull extractive industry to the demand of mining machinery and mass transit vehicle, especially the quarry tipper giant tire market demand is increased sharply, and the increase of off-the-road tyre demand has driven downstream related industry.
With truck and passenger vehicle tyre ratio, off-the-road tyre load and service condition are obviously different, therefore also there is larger difference in engineering machinery radial all-steel cord, and U.S. US8336284 discloses the steel cord of 3*7 and 7*7 structure, and US7775247 discloses the steel cord of 2*7 structure.With regard to all-steel cord manufacture is theoretical, engineering machinery radial all-steel cord relates to the change that theory needs some new, embodies and is all-steel cord requirement of strength aspect.Current solution is generally that many conventional steel silk cords are twisted together, and forms the engineering machinery radial all-steel cord that specification is larger.The Fracture Force of tradition carcass all-steel cord is generally about 2750N, fully can meet instructions for use.And engineering machinery radial is because load is large, service condition is harsh, be frequently subject to the reasons such as road surface sharppointed article puncture, to the requirement of strength of all-steel cord far away higher than ordinary steel wire cord.
Summary of the invention
The object of this invention is to provide a kind of bending stiffness of reinforcing cord, improve the resiliency of cord in cotton tyre cord calendering formation process, improve the anti-fatigue performance of cord, be convenient to the lay pitch strengthening cord, improve engineering tire seven strands of steel cords of the bonding force of cord and rubber, this steel cord strength is high, puncture-resistant, anti-wear performance are good, while the Fracture Force improving steel cord, reduce steel cord proportion in tire.
The present invention is achieved by the following technical solution:
Engineering tire seven strands of steel cords, compile sth. made by twisting by steel wire and form, comprise heart yearn stock and outer strand, and after it compiles sth. made by twisting by seven strands of steel strands, an additional winding steel wire forms, and the sth. made by twisting of winding steel wire is to being S sth. made by twisting; Seven strands of steel strands are formed after compiling and twisting with the fingers and are evenly arranged in structure around heart yearn stock by six strands of outer strands, and it twists with the fingers to twisting with the fingers for Z, cross section is circle; Described heart yearn stock and outer strand are all compiled sth. made by twisting by five steel wires and are formed, and it is twisted with the fingers to being all S sth. made by twisting.
It is 20mm that seven strands of steel strands compile the lay pitch D twisted with the fingers, and the lay pitch d of winding steel wire is 5mm.
Gauge of wire is 0.25mm.
Engineering tire of the present invention seven strands of steel cords compile the rear additional winding steel wire of sth. made by twisting by seven strands of steel strands, the effect of outer winding steel wire prevents cord loose, the bending stiffness of reinforcing cord, improve the resiliency of cord in cotton tyre cord calendering formation process, improve the anti-fatigue performance of cord, be convenient to strengthen the lay pitch of cord, improve the bonding force of cord and rubber, the lay pitch that the lay pitch of winding steel wire is less than seven strands of steel strands plays a part to tighten up cord.
The present invention compared with prior art has following beneficial effect:
1, because the steel wire diameter of steel cord strengthens, Fracture Force is high, therefore its bearing capacity is strong.
2, due to its twisting closely and there is round structure, intensity of steel wire is high can keep identical humidification, the puncture-resistant performance of the cord that improve.
3, seven bursts of steel strands itself, seven strands of steel strand volume sth. made by twisting and winding steel wire are ordinary lay, and have certain gap between steel strand and steel strand, rubber can fully be penetrated in steel cord, and corrosion resistance and good, extends the service life of tire.
4, the effect of outer winding steel wire prevents cord loose, the bending stiffness of reinforcing cord, improves the resiliency of cord in cotton tyre cord calendering formation process, improves the anti-fatigue performance of cord, is convenient to the lay pitch strengthening cord, improves the bonding force of cord and rubber.
5, this steel cord strength is high, puncture-resistant, anti-wear performance are good, while the Fracture Force improving steel cord, reduce steel cord proportion in tire.
Accompanying drawing explanation
Fig. 1 is the section structure schematic diagram of the embodiment of the present invention;
Fig. 2 is the transversary schematic diagram of Fig. 1;
Fig. 3 is the transversary schematic diagram of heart yearn stock in the embodiment of the present invention.
Sequence number in figure: 1, heart yearn stock, 2, outer strand, 3, winding steel wire.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
See shown in Fig. 1 to Fig. 3, a kind of engineering tire seven strands of steel cords, compile sth. made by twisting by steel wire to form, gauge of wire is 0.25mm, it comprises heart yearn stock 1, outer strand 2 and winding steel wire 3, after it compiles sth. made by twisting by seven strands of steel strands, an additional winding steel wire 3 forms, and the sth. made by twisting of winding steel wire 3 is to being that S twists with the fingers, and lay pitch d is 5mm; The rear formation of seven strands of steel strands volume sth. made by twisting is evenly arranged in the structure around heart yearn stock 1 by six strands of outer strands 2, and it is twisted with the fingers to being 20mm for Z sth. made by twisting, lay pitch D, and cross section is circle; Described heart yearn stock 1 and outer strand 2 are all compiled sth. made by twisting by five steel wires and are formed, and it is twisted with the fingers to being all S sth. made by twisting.
Embodiment is just for the ease of understanding technical scheme of the present invention; do not form limiting the scope of the invention; every do not depart from technical solution of the present invention interior perhaps above scheme is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong within scope.
Claims (3)
1. engineering tire seven strands of steel cords, compile sth. made by twisting by steel wire and form, comprise heart yearn stock (1) with outer strand (2), it is characterized in that: it by seven strands of steel strands compile twist with the fingers after additional winding steel wire (3) form, winding steel wire sth. made by twisting is (3) to being S sth. made by twisting; Seven strands of steel strands are formed after compiling and twisting with the fingers and are (2) evenly arranged in heart yearn stock (1) structure around by six strands of outer strands, and it twists with the fingers to twisting with the fingers for Z, cross section is circle; (2) (1) described heart yearn stock all compiled sth. made by twisting by five steel wires with outer strand and formed, and it is twisted with the fingers to being all S sth. made by twisting.
2. engineering tire according to claim 1 seven strands of steel cords, is characterized in that: it is 20mm that seven strands of steel strands compile the lay pitch D twisted with the fingers, and winding steel wire lay pitch d is (3) 5mm.
3. engineering tire according to claim 1 and 2 seven strands of steel cords, is characterized in that: gauge of wire is 0.25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510991016.8A CN105442362A (en) | 2015-12-25 | 2015-12-25 | Seven-strand steel cord for engineering tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510991016.8A CN105442362A (en) | 2015-12-25 | 2015-12-25 | Seven-strand steel cord for engineering tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105442362A true CN105442362A (en) | 2016-03-30 |
Family
ID=55552963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510991016.8A Pending CN105442362A (en) | 2015-12-25 | 2015-12-25 | Seven-strand steel cord for engineering tire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105442362A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411660A (en) * | 2018-04-03 | 2018-08-17 | 江苏凯威新材料科技有限公司 | A kind of tensile type steel wire rope of Large-scale Hoisting device-specific |
| CN109306633A (en) * | 2018-11-10 | 2019-02-05 | 江苏兴达钢帘线股份有限公司 | A kind of engineering steel cord with strong Fracture Force and strong fatigue durability |
| WO2022151623A1 (en) * | 2021-01-15 | 2022-07-21 | 江苏兴达钢帘线股份有限公司 | Compact steel cord |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2747261Y (en) * | 2004-08-09 | 2005-12-21 | 刘锦兰 | Steel cord yarn |
| CN2755153Y (en) * | 2004-12-07 | 2006-02-01 | 江苏兴达钢帘线股份有限公司 | Steel curtain wire |
| CN203128921U (en) * | 2012-12-31 | 2013-08-14 | 江苏兴达钢帘线股份有限公司 | Steel cord for engineering tire |
| CN204311191U (en) * | 2014-10-30 | 2015-05-06 | 江苏兴达钢帘线股份有限公司 | A kind of 15 strands of steel cords |
| CN205368871U (en) * | 2015-12-25 | 2016-07-06 | 江苏兴达钢帘线股份有限公司 | Engineering child is with seven strands of steel cords |
-
2015
- 2015-12-25 CN CN201510991016.8A patent/CN105442362A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2747261Y (en) * | 2004-08-09 | 2005-12-21 | 刘锦兰 | Steel cord yarn |
| CN2755153Y (en) * | 2004-12-07 | 2006-02-01 | 江苏兴达钢帘线股份有限公司 | Steel curtain wire |
| CN203128921U (en) * | 2012-12-31 | 2013-08-14 | 江苏兴达钢帘线股份有限公司 | Steel cord for engineering tire |
| CN204311191U (en) * | 2014-10-30 | 2015-05-06 | 江苏兴达钢帘线股份有限公司 | A kind of 15 strands of steel cords |
| CN205368871U (en) * | 2015-12-25 | 2016-07-06 | 江苏兴达钢帘线股份有限公司 | Engineering child is with seven strands of steel cords |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108411660A (en) * | 2018-04-03 | 2018-08-17 | 江苏凯威新材料科技有限公司 | A kind of tensile type steel wire rope of Large-scale Hoisting device-specific |
| CN108411660B (en) * | 2018-04-03 | 2023-04-28 | 江苏凯威新材料科技有限公司 | Dedicated tensile wire rope of large-scale lifting device |
| CN109306633A (en) * | 2018-11-10 | 2019-02-05 | 江苏兴达钢帘线股份有限公司 | A kind of engineering steel cord with strong Fracture Force and strong fatigue durability |
| WO2022151623A1 (en) * | 2021-01-15 | 2022-07-21 | 江苏兴达钢帘线股份有限公司 | Compact steel cord |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |
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| RJ01 | Rejection of invention patent application after publication |