CN110055781A - 一种直径45mm股压实不旋转钢丝绳结构设计方法 - Google Patents
一种直径45mm股压实不旋转钢丝绳结构设计方法 Download PDFInfo
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Abstract
一种直径45mm股压实不旋转钢丝绳结构设计方法,具体步骤为:第一步:以一根中心纤维芯为中心,外包捻制六根内层股,内层股捻制成型后经过辊压实,每根股的压实率12~15%,形成第一层绳;第二步:再以第一层绳为中心外包捻制十一根次外层股,次外层股捻制成型后经过辊压实,每根股的压实率12~15%,形成第二层绳;第三步:再以第二层绳为中心外包捻制十七根外层股,外层股捻制成型后经过辊压实,每根股的压实率12~15%。本发明由于钢丝绳内层股、次外层股和外层股均经过辊压实,其股中钢丝与钢丝之间呈面接触状态,股与股之间呈部分线性接触状态,钢丝绳结构紧密,耐疲劳性能和阻旋转性能好,承载能力大,钢丝绳使用寿命高。
Description
技术领域
本发明涉及一种直径45mm股压实不旋转钢丝绳结构设计方法,属于金属制品加工技术领域。
背景技术
大型机械设备使用的多层股钢丝绳,通常为点线接触类钢丝绳,其金属填充系数小、破断拉力低,而难以满足高破断拉力、良好阻旋转性能的实际需求,因而需要对钢丝绳的结构、捻制方法及性能特点进行研究并加以改进。
发明内容
本发明的的目的是为了克服点线接触类钢丝绳,其金属填充系数小、破断拉力低,而难以满足高破断拉力、良好阻旋转性能的实际需求,因而需要对钢丝绳的结构、捻制方法及性能特点加以改进的技术问题。
为了达到上述目的本发明采用如下技术方案:
一种直径45mm股压实不旋转钢丝绳结构设计方法,具体步骤为:
第一步:以一根中心纤维芯为中心,外包捻制六根内层股,内层股捻制成型后经过辊压实,每根股的压实率12~15%,形成第一层绳;
第二步:再以第一层绳为中心外包捻制十一根次外层股,次外层股捻制成型后经过辊压实,每根股的压实率12~15%,形成第二层绳;
第三步:再以第二层绳为中心外包捻制十七根外层股,外层股捻制成型后经过辊压实,每根股的压实率12~15%。
采用上述技术方案的有益效果是:
本发明由于钢丝绳内层股、次外层股和外层股均经过辊压实,其股中钢丝与钢丝之间呈面接触状态,股与股之间呈部分线性接触状态,钢丝绳结构紧密,耐疲劳性能和阻旋转性能好,承载能力大,钢丝绳使用寿命高。
附图说明
图1为本发明直径45mm股压实不旋转钢丝绳结构示意图。
图中:1-中心纤维芯、2-内层股、3-次外层股、4-外层股。
具体实施方式
下面结合附图对本发明作进一步详细说明:
一种直径45mm股压实不旋转钢丝绳结构设计方法,具体步骤为:
第一步:以一根中心纤维芯1为中心,外包捻制六根内层股2,内层股2捻制成型后经过辊压实,每根股的压实率12~15%,形成第一层绳;
第二步:再以第一层绳为中心外包捻制十一根次外层股3,次外层股3捻制成型后经过辊压实,每根股的压实率12~15%,形成第二层绳;
第三步:再以第二层绳为中心外包捻制十七根外层股4,外层股4捻制成型后经过辊压实,每根股的压实率12~15%。
应当说明的是一种直径45mm股压实不旋转钢丝绳,在设计同时还应考虑绳与股的捻距,绳与股的捻向,以达到钢丝绳受力后,内部各元件产生的旋转力矩正好相互平衡,达到不旋转的目的。
具体实施后的效果,通过股未压实的直径45mm不旋转钢丝绳与股压实的直径45mm不旋转钢丝绳对比计算破断拉力获知。
1、股未压实时:
各层之间的股是交叉状态的纯点接触方式。
计算钢丝绳破断拉力:
F1=K/×D2×R0/1000=0.308×452×1770/1000=1103.949 kN
通过配丝计算其金属截面积:
A1=866.823 mm2。
2、采用股压实时:
股是1×7结构为线接触方式,经压实后近似于一根扩大了直径的钢丝,经压实后的各层之间的股是部分线接触方式,破断拉力系数可参照麻芯压实股类系数0.373计算。
计算钢丝绳破断拉力:
F2=K/×D2×R0/1000=0.373×452×1770/1000=1336.925 kN
通过配丝计算其金属截面积:
A2=1015.220 mm2。
3、数据对比:
1)、破断拉力对比:
F2/F1=1336.925/1103.949≈1.2110,即破断拉力约提高21.10%。
2)、金属截面积对比
A2/A1=1015.22/866.823≈1.1712,即金属截面积约提高17.12%。
3)、如果要达到压实后的破断拉力F2值,则未压实的圆股钢丝绳直径,即采用压实股设计时钢丝绳直径减小的百分比为:(49.52-45)/49.52×100%≈9.13%。
4)、如果要达到未压实的圆股钢丝绳破断拉力F1值,则压实股钢丝绳强度,即采用压实股设计时可通过降低钢丝绳强度满足,因而可以降低构成钢丝绳的钢丝强度,提高钢丝的韧性,使钢丝绳耐疲劳性能提高。
式中:F1—股未压实的钢丝绳破断拉力 kN;A1—股未压实的金属截面积mm2;F2—股压实的钢丝绳破断拉力 kN;A2—股压实的金属截面积mm2;K/—破断拉力系数;R0—钢丝绳抗拉强度级 MPa;D—钢丝绳直径 mm。
该设计方法为工业机械设备材料高效节约化发展要求的钢丝绳高破断拉力的设计奠定了技术基础。
本发明由于钢丝绳内层股、次外层股和外层股均经过辊压实,钢丝绳中钢丝与钢丝之间呈面接触结构状态,结构紧密,钢丝绳股与股之间呈部分线性接触状态,具有保证钢丝绳所需的通用柔软特性能力,使得钢丝绳耐疲劳性能和承载能力显著增加,寿命增高。
Claims (1)
1.一种直径45mm股压实不旋转钢丝绳结构设计方法,其特征在于:具体步骤为:
第一步:以一根中心纤维芯(1)为中心,外包捻制六根内层股(2),内层股(2)捻制成型后经过辊压实,每根股的压实率12~15%,形成第一层绳;
第二步:再以第一层绳为中心外包捻制十一根次外层股(3),次外层股(3)捻制成型后经过辊压实,每根股的压实率12~15%,形成第二层绳;
第三步:再以第二层绳为中心外包捻制十七根外层股(4),外层股(4)捻制成型后经过辊压实,每根股的压实率12~15%。
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CN111648147A (zh) * | 2020-05-11 | 2020-09-11 | 贵州钢绳股份有限公司 | 一种Φ100mm起重用粗直径多层股钢丝绳 |
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WO2016071184A1 (de) * | 2014-11-05 | 2016-05-12 | Teufelberger Fiber Rope Gmbh | Seil aus textilem fasermaterial |
CN106049139A (zh) * | 2016-07-22 | 2016-10-26 | 贵州钢绳股份有限公司 | 一种电铲用填塑钢丝绳及其制造方法 |
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US20090308637A1 (en) * | 2007-02-16 | 2009-12-17 | Nv Bekaert Sa | Steel core for an electric transmission cable and method of fabricating it |
WO2016071184A1 (de) * | 2014-11-05 | 2016-05-12 | Teufelberger Fiber Rope Gmbh | Seil aus textilem fasermaterial |
CN204530289U (zh) * | 2015-01-26 | 2015-08-05 | 湖北福星新材料科技有限公司 | 多用途钢丝绳 |
CN106049139A (zh) * | 2016-07-22 | 2016-10-26 | 贵州钢绳股份有限公司 | 一种电铲用填塑钢丝绳及其制造方法 |
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CN111648147A (zh) * | 2020-05-11 | 2020-09-11 | 贵州钢绳股份有限公司 | 一种Φ100mm起重用粗直径多层股钢丝绳 |
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