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WO2020113612A1 - 一种具有特殊结构的钢丝绳及其生产工艺 - Google Patents

一种具有特殊结构的钢丝绳及其生产工艺 Download PDF

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Publication number
WO2020113612A1
WO2020113612A1 PCT/CN2018/120164 CN2018120164W WO2020113612A1 WO 2020113612 A1 WO2020113612 A1 WO 2020113612A1 CN 2018120164 W CN2018120164 W CN 2018120164W WO 2020113612 A1 WO2020113612 A1 WO 2020113612A1
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WO
WIPO (PCT)
Prior art keywords
steel wire
monofilament
wire rope
deformed
special structure
Prior art date
Application number
PCT/CN2018/120164
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English (en)
French (fr)
Inventor
刘祥
周志嵩
姚利丽
冯国兵
王威
石荣珠
姜志美
杨迎春
Original Assignee
江苏兴达钢帘线股份有限公司
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Application filed by 江苏兴达钢帘线股份有限公司 filed Critical 江苏兴达钢帘线股份有限公司
Publication of WO2020113612A1 publication Critical patent/WO2020113612A1/zh

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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
    • D07B1/0673—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a rope configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire
    • 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
    • D07B2201/20—Rope or cable components
    • D07B2201/2001—Wires or filaments
    • D07B2201/2007—Wires or filaments characterised by their longitudinal shape
    • D07B2201/2008—Wires or filaments characterised by their longitudinal shape wavy or undulated

Definitions

  • the invention relates to the technical field of steel wire rope design and production, in particular to a steel wire rope with a special structure for transmission and its production process.
  • the steel wire ropes of this structure are more likely to break because the inner steel wire is subjected to a large squeezing force, and the inner steel wire after breakage is easy to emerge and intensify
  • the wear of the outer layer wire eventually leads to the scrapping of the wire rope; in addition, because the inner layer wire is subjected to a large squeezing force, the fatigue performance of the wire rope is also low; As a result, the adhesion between the steel wire rope and the rubber compound is reduced, which further reduces the performance of the steel wire rope and shortens the service life of the steel wire rope.
  • the object of the present invention is to provide a steel wire rope with a special structure and a production process thereof, which can effectively solve the problem of wire threading in the use of the steel wire rope and improve the fatigue and adhesion of the steel wire rope , Improve safety during use and extend the service life of wire rope.
  • a steel wire rope with a special structure of the present invention has a circular cross section and includes pre-deformed monofilaments and linear monofilaments.
  • the steel wire rope is formed by spirally winding pre-deformed monofilaments and linear monofilaments.
  • the pre-deformed monofilaments are located at the center; the number of the pre-deformed monofilaments is 1 to 3; the number of the straight monofilaments is 3 to 18.
  • the diameter of the pre-deformed monofilament is larger than the diameter of the linear monofilament.
  • the pre-deformed monofilament is obtained by performing pre-deformation treatment on the basis of the linear monofilament through a deformer.
  • the amount of deformation of the pre-deformed monofilament is between 10 ⁇ m and 150 ⁇ m.
  • a production process of the above-mentioned steel wire rope with a special structure includes the following steps:
  • the production process further includes the step of twisting the steel wire rope prepared in the above step S3 as a central strand and other outer strands to prepare a multi-strand steel wire rope.
  • the deformer is installed behind the water tank wire drawing machine, and after linear monofilament drawing, the pre-deformed monofilament is obtained by pre-deformation through the deformer after the outlet of the water tank.
  • the loop diameter of the pre-deformed monofilament (11) deformed after the step S1 is not less than 200 mm.
  • the deformer in step S1 includes a deforming roller that meshes with each other and a screw that can adjust the spacing between the deforming rollers; the deforming roller is a pair or two pairs.
  • the deformed rollers that are in mesh with each other are placed at a certain angle, and the included angle is between 30° and 90°.
  • the amount of deformation of the pre-deformed monofilament obtained after the linear monofilament passes through the deformation roller is between 10 ⁇ m and 150 ⁇ m.
  • the outer edge surface of the deformation roller is arc-shaped.
  • the steel wire rope with a special structure of the present invention uses pre-deformed monofilaments at its center, which effectively improves the fatigue times and adhesion of the steel wire rope, and solves the problem of wire rope threading; the production process of the steel wire rope is simple, and the production equipment is easy Maintenance operation has the characteristics of small investment and high profit, suitable for large-scale promotion and application.
  • FIG. 1 is a schematic diagram of the monofilament structure of the steel wire rope with a special structure of the present invention
  • FIG. 2 is a schematic diagram of a cross-sectional structure of a steel rope according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a cross-sectional structure of a steel wire rope according to another embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a cross-sectional structure of a steel wire rope according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a deformed monofilament deformer of a steel wire rope of the present invention.
  • 11 is the pre-deformed monofilament
  • 12 is the linear monofilament
  • 41 is the core strand
  • 42 is the face strand
  • 23 is the deformation roller
  • 24 is the adjusting screw
  • L is the amount of monofilament deformation.
  • the steel wire rope with a special structure of the present invention has a circular cross section, including a pre-deformed monofilament (11) and a linear monofilament (12 ), the steel wire rope is spirally wound by a pre-deformed monofilament (11) and a linear monofilament (12), the pre-deformed monofilament (11) is located at the center; the number n of the pre-deformed monofilament (11) is 1 To 3; the number m of the linear monofilaments (12) is 3 to 18.
  • the diameter of the pre-deformed monofilament (11) is larger than the diameter of the linear monofilament (12).
  • the pre-deformed monofilament (11) is obtained by performing pre-deformation on a linear monofilament through a deformer; in a preferred embodiment, referring to FIG. 1,
  • the deformation amount L of the pre-deformed monofilament (11) is between 10 ⁇ m and 150 ⁇ m.
  • a production process of the above-mentioned steel wire rope with a special structure includes the following steps:
  • the production process further includes the step of twisting the steel wire rope prepared in the above step S3 as a central strand and other outer strands to prepare a multi-strand steel wire rope.
  • the deformer (22) is arranged behind the water tank wire drawing machine, and after the linear monofilament is drawn, it passes through the deformer after the outlet of the water tank ( 22) Pre-deformation to obtain pre-deformed monofilaments (11); in a preferred embodiment, the loop diameter of the pre-deformed monofilaments (11) deformed through step S1 is not less than 200 mm.
  • the deformer (22) in the step S1 includes an intermeshing deforming roller (23) and a screw (24) that can adjust the spacing between the deforming rollers (23).
  • the deforming rollers can be one pair or two pairs; in a preferred embodiment, one or two pairs of deforming rollers (23) that are in mesh with each other are placed at a certain angle, and the included angle is in the range of 30° to 90°;
  • the spacing between the deformation rollers (23) can be adjusted by the screw (24), so that the amount of deformation of the pre-deformed monofilament (11) obtained after the linear monofilament passes through the deformation roller (23) is Between 10 ⁇ m and 150 ⁇ m, the amount of monofilament deformation L can be measured with a profile projector; in another preferred embodiment, the outer edge surface of the deformation roller is arc-shaped.
  • the pre-deformed monofilament (11) can be used as the core yarn, and the linear monofilament (12) can be used as the face yarn to twist the combined rope.
  • the resulting rope can be a single strand; it can also be twisted
  • a single-strand steel wire rope with pre-deformed monofilaments is used as a multi-strand steel wire rope with a multilayer structure as a central strand twisted.
  • the steel wire rope is composed of a pre-deformed monofilament (11) as the core wire, and six straight monofilaments (12) on the outside as the surface yarn twist
  • the single-strand steel wire rope of "1+6" structure is composed of a pre-deformed monofilament (11) as the core wire, and six straight monofilaments (12) on the outside as the surface yarn twist.
  • the pre-deformed monofilament (11) has a wire diameter of 0.25 mm, the amount of deformation is 50 ⁇ m, the linear monofilament (12) has a wire diameter of 0.24 mm, the number of linear monofilaments (12) is 6, and the rope twisting distance is 10 mm.
  • the twist direction is S twist.
  • S1 Production of 0.25mm pre-deformed monofilaments:
  • the linear monofilament with a size of 0.25mm from the mouth of the water tank is passed through the deformer (22).
  • select a deformer with only a pair of deformation rollers and adjust the deformer screw (24 ) Go to the appropriate position and jog the machine to ensure that the pre-deformed monofilament (11) has a diameter of not less than 200 mm and a monofilament deformation of 50 ⁇ m.
  • S3 Select one round of qualified 0.25mm pre-deformed monofilaments and six rounds of 0.24mm linear monofilaments, and twist them to produce "0.25+6*0.24" single-strand steel wire rope.
  • the steel wire rope of the second embodiment of the present invention is composed of 3 pre-deformed monofilaments (11) as the core strand, and 9 straight monofilaments (12) on the outside as the surface yarn twist A single-strand steel wire rope of "3+9" structure.
  • the three pre-deformed monofilaments (11) have a diameter of 0.30 mm, a deformation amount of 50 ⁇ m, and a twist pitch of 6.3 mm;
  • the linear monofilament (12) has a diameter of 0.28 mm and the number of linear monofilaments (12) is 9 ,
  • the twist pitch is 12.8mm, and the rope twist direction is S twist.
  • the monofilaments are produced using the same process flow as in the first embodiment. Three rounds of qualified 0.30mm pre-deformed monofilaments and nine rounds of 0.28mm straight wire are selected Silk for twisting production.
  • FIG. 4 Refer to the structural schematic diagram of the third embodiment of the steel wire rope of the present invention shown in FIG. 4, which is made by twisting the "1+6" steel wire rope in the first embodiment as a multi-layer structure core strand Structural wire rope.
  • This steel wire rope is composed of seven strands, each of which is composed of seven monofilaments.
  • the core strand (41) is wound by six face strands (42), while the core strand (41) has a central monofilament and is wound by six monofilaments, and the face strand (42) also has a central monofilament and is wound by Six monofilaments are wound, one central monofilament of the core strand (41) is a pre-deformed monofilament (11), and the remaining monofilaments are straight monofilaments (12).
  • the core filament (42) has a central monofilament diameter of 0.25 mm, which is a pre-deformed monofilament (11). 50 ⁇ m, core strand (42) face yarn diameter 0.23mm, straight monofilament (12), core strand (42) twist pitch 10mm; face strand (43) central filament yarn diameter 0.23mm, face yarn diameter 0.21 mm, all of which are straight monofilaments (12) with a lay length of 12 mm; a synthetic rope with a lay length of 22 mm and a twist direction S.
  • the monofilament is produced using the same process flow as in the first embodiment, and one round of qualified 0.25mm pre-deformed monofilament (11) and six rounds of 0.23 are selected mm linear monofilament (12) for core strand (41) twist production, select one round of qualified 0.23mm linear monofilament (12) and 6 rounds of 0.21mm linear monofilament (12) for face strand (42) twist production , 1 round core strands (41) and 6 round face strands (42) are plied to produce "7*7" steel wire rope.
  • the pre-deformed monofilament is used in the center of the steel wire rope of the present invention, which effectively improves the fatigue times and adhesion of the steel wire rope, and solves the problem of wire rope threading; the production process of the steel wire rope is simple, and the production equipment is easy Maintenance operation has the characteristics of small investment and high profit, suitable for large-scale promotion and application.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ropes Or Cables (AREA)

Abstract

一种具有特殊结构钢丝绳，其截面呈圆形，包括预变形单丝（11）和直线单丝（12），所述钢丝绳由预变形单丝（11）和直线单丝（12）螺旋缠绕而成，预变形单丝（11）位于中心处；预变形单丝（11）的数量为1至3根；直线单丝（12）数量为3至18根；预变形单丝（11）的变形量在10μm到150μm之间。中心使用预变形单丝（11），有效的提高了钢丝绳的疲劳次数和粘合力，解决了钢丝绳出现冒丝的问题；钢丝绳的生产工艺流程简单，生产设备易维护操作，具有小投入高收益的特性，适合大规模推广应用。

Description

一种具有特殊结构的钢丝绳及其生产工艺 技术领域
本发明涉及钢丝绳设计及其生产技术领域，特别涉及一种用于传输用的具有特殊结构的钢丝绳及其生产工艺。
背景技术
近年来，随着社会生产力的提高，人们对传输用钢丝绳的需求量日益增加，比如货物的近距离流水线传输、楼宇电梯的升降启动都离不开钢丝绳；特别是现在随着人民生活水平的进一步提高，人们开始对使用设备的安全、高速、耐久等性能的要求也随之提高。现有钢丝绳一般都是采用光面单丝直接捻制而成，这种结构的钢丝绳因为内层钢丝受挤压力大，比较容易出现断裂，断裂之后的内层钢丝很容易冒出，并加剧对外层丝的磨损，最终导致钢丝绳报废；另外，因为内层钢丝受挤压力大，钢丝绳的疲劳性能也较低；另一方面，在覆胶时，胶料不能充分渗透到钢丝之间，使得钢丝绳与胶料粘合力降低，也进一步降低了钢丝绳的性能，缩短了钢丝绳的使用寿命。
发明内容
为解决现有技术的不足，本发明的目的是提供一种具有特殊结构的钢丝绳及其生产工艺，可以有效解决钢丝绳在使用过程中出现冒丝的问题，提高了钢丝绳的疲劳性和粘合力，提高使用过程中的安全性并延长钢丝绳的使用寿命。
为达到本发明的目的，本发明的一种具有特殊结构钢丝绳，其截面呈圆形，包括预变形单丝和直线单丝，所述钢丝绳由预变形单丝与直线单丝螺旋缠绕而成，预变形单丝位于中心处；所述预变形单丝的数量为1至3根；所述直线单丝数量为3至18根。
优选的，所述的预变形单丝的直径大于直线单丝的直径。
再优选的，所述的预变形单丝是在直线单丝的基础上经过变形器进行预变形处理得到。
再优选的，所述预变形单丝的变形量在10μm到150μm之间。
根据本发明的另一目的，一种上述的具有特殊结构钢丝绳的生产工艺，其包括如下步骤：
S1：将需要预变形的直线单丝通过变形器进行预变形；
S2：将经过预变形的预变形单丝作为芯丝与直线单丝面丝进行编捻制备钢丝绳；
S3：将捻制后的钢丝绳通过校直器消除钢丝绳中的预应力并进行校直。
优选的，所述的生产工艺还包括将上述步骤S3制备的钢丝绳作为中心股线与其他外层股线进行捻制制备多股结构的钢丝绳的步骤。
再优选的，在所述的步骤S1中，是将变形器设置于水箱拉丝机后面，在直线单丝拉拔后在出水箱玛口后经过变形器进行预变形得到预变形单丝。
再优选的，经过所述步骤S1进行变形的预变形单丝(11)的圈径不小于200mm。
再优选的，所述步骤S1中的变形器包括相互啮合的变形辊以及可以调节变形辊之间的间距的螺杆；所述的变形辊为一对或两对。
再优选的，相互啮合的变形辊成一定的角度放置，夹角在30°到90°。
再优选的，在所述的步骤S1中，直线单丝经过变形辊后得到的预变形单丝的变形量在10μm到150μm之间。
再优选的，所述变形辊外缘面为圆弧形。
本发明的具有特殊结构的钢丝绳，其中心使用预变形的单丝，有效的提高了钢丝绳的疲劳次数和粘合力，解决了钢丝绳出现冒丝的问题；钢丝绳的生产工艺流程简单，生产设备易维护操作，具有小投入高收益的特性，适合大规模推广应用。
附图说明
通过下面结合附图的详细描述，本发明前述的和其他的目的、特征和优点将变得显而易见。其中：
图1所示为本发明的具有特殊结构的钢丝绳的单丝结构示意图；
图2所示为本发明的一个实施例的钢丝绳的横截面结构示意图；
图3所示为本发明的另一实施例的钢丝绳的横截面结构示意图；
图4所示为本发明的又一实施例的钢丝绳的横截面结构示意图；
图5所示为本发明的钢丝绳的变形单丝的变形器的结构示意图。
其中、11为预变形单丝；12为直线单丝；41为芯股；42为面股；23为变形辊；24为调节螺杆；L为单丝变形量。
具体实施方式
以下结合附图对本发明的具体实施方式做进一步的描述。
在本发明描述中，需要理解的是，术语“上”、“下”、“左”、“右”等指示方位或位置关系基于附图所示的方位或位置关系，仅是为了便于描述本发明，而不是指示或暗示所指元件的必须位置，因此不能理解为对本发明的限制。
参照图1所示的本发明的具有特殊结构的钢丝绳的单丝结构示意图,本发明的一种具有特殊结构钢丝绳，其截面呈圆形，包括预变形单丝(11)和直线单丝(12)，所述钢丝绳由预变形单丝(11)与直线单丝(12)螺旋缠绕而成，预变形单丝(11)位于中心处；所述预变形单丝(11)的数量n为1至3根；所述直线单丝(12)数量m为3至18根。
在一优选的实施方式中，所述的预变形单丝(11)直径大于直线单丝(12)直径。
在上述的具体实施例中，所述的预变形单丝(11)是在直线单丝的基础上经过变形器进行预变形处理得到的；在一优选的实施方式中，参照图1，所述预变形单丝(11)变形量L在10μm到150μm之间。
一种上述的具有特殊结构钢丝绳的生产工艺，其包括如下步骤：
S1：将需要预变形的直线单丝通过变形器进行预变形；
S2：将经过预变形的预变形单丝作为芯丝与直线单丝面丝进行编捻制备钢丝绳；
S3：将捻制后的钢丝绳通过校直器消除钢丝绳中的预应力并进行校直。
在多股钢丝绳的制备工艺中，所述的生产工艺还包括将上述步骤S3制备的钢丝绳作为中心股线与其他外层股线进行捻制制备多股结构的钢丝绳的步骤。
在一优选的实施方式中，参照图5，所述的步骤S1中，是将变形器(22)设置于水箱拉丝机后面，在直线单丝拉拔后在出水箱玛口后经过变形器(22)进行预变形得到预变形单丝(11)；在一优选的实施方案中，经过所述步骤S1进行变形的预变形单丝(11)的圈径不小于200mm。
在另一优选的实施方案中，所述步骤S1中的变形器(22)包括相互啮合的变形辊(23)以及可以调节变形辊(23)之间的间距的螺杆(24)，所述的变形辊可以是一对或两对；在一优选的实施方式中，相互啮合的一对或两对变形辊(23)成一定的角度放置，夹角在30°到90°范围内；在实际生产时，根据单丝直径大小，变形辊(23)之间的间距可以通过螺杆(24)调节，使直线单丝经过变形辊(23)后得到的预变形单丝(11)的变形量在10μm到150μm之间，单丝变形量L可用轮廓投影仪来测量；在另一优选的实施方式中，所述变形辊外缘面为圆弧形。
在实际生产时，可以根据用户需求，将预变形单丝(11)作为芯丝，直线单丝(12)作为面丝进行捻制合绳，所得到的绳可以是单股；也可以将捻制的具有预变形单丝的单股钢丝绳作为多层结构的中心股捻制多层结构的多股钢丝绳。
实施例1：
参照图2所示的本发明的第一个实施例的钢丝绳的结构示意图，其是由1根预变形单丝(11)作为中芯丝，外面6根直线单丝(12)作为面丝捻制而成的“1+6”结构单股钢丝绳。
具体到实施例中，预变形单丝(11)丝径0.25mm，变形量50μm，直线单丝(12)丝径0.24mm，直线单丝(12)数量为6根，绳捻距为10mm，捻向为S捻。
将上述实施例中的钢丝绳与利用同等规格光面丝生产的一般钢丝绳进行对比，对比数据见表1：
Figure PCTCN2018120164-appb-000001
结合上表可以看出，本发明的特殊结构钢丝绳具有较高的疲劳次数和粘合力，且样品在断 裂后没有出现中心丝冒丝的情况，具有更好的应用效果。
本实施的“0.25+6*0.24”规格的单股钢丝绳的生产工艺，具体工艺步骤为：
S1：进行0.25mm预变形单丝生产：将水箱玛口出来的规格为0.25mm的直线单丝经过变形器(22)，此处选择只有一对变形辊的变形器，调节变形器螺杆(24)到合适的位置，点动机床，确保此时的预变形单丝(11)圈径不小于200mm，单丝变形量50μm，开车生产；
S2：进行0.24mm直线单丝生产，更换模链，将水箱玛口出来的规格为0.24mm的直线单丝(12)不经过变形器(22)，点动机床，确保此时的直线单丝(12)圈径不小于200mm，开车生产；
S3：选取1轮合格的0.25mm预变形单丝和6轮0.24mm直线单丝，进行捻制生产出“0.25+6*0.24”规格的单股钢丝绳。
实施例2：
参照图3所示的本发明的第二个实施例的钢丝绳的结构示意图，其是由3根预变形单丝(11)作为中芯股，外面9根直线单丝(12)作为面丝捻制而成的“3+9”结构的单股钢丝绳。
具体到实施例中，3根预变形单丝(11)丝径0.30mm，变形量50μm，捻距6.3mm；直线单丝(12)丝径0.28mm，直线单丝(12)数量为9根，捻距为12.8mm，绳捻向为S捻。
将上述实施例中的钢丝绳与利用同等规格光面丝生产的一般钢丝绳进行对比，对比数据见表2：
Figure PCTCN2018120164-appb-000002
综合上表可以看出，本发明的特殊结构钢丝绳具有较高的疲劳次数，且样品在断裂后没有出现中心丝冒丝的情况，具有更好的应用效果。
本实施例中的“3+9”规格的钢丝绳在生产时，单丝使用与实施例一中相同的工艺流程进行生产，选取3轮合格的0.30mm预变形单丝和9轮0.28mm直线单丝，进行捻制生产。
实施例3：
参照图4所示的本发明的第三个实施例的钢丝绳的结构示意图，其是以实施例一中的“1+6”钢丝绳作为多层结构的中芯股捻制而成的7*7结构钢丝绳。此钢丝绳由七根股绳组成，每股由七根单丝组成。其中芯股(41)被六根面股(42)缠绕，而芯股(41)具有一根中心单 丝，并被六根单丝缠绕，面股(42)同样具有一根中心单丝，并被六根单丝缠绕，芯股(41)的一根中心单丝为预变形单丝(11)，其余单丝为直线单丝(12)。
具体到实施例中，其为(0.25+6×0.23)+6×(0.23+6×0.21)结构，芯股(42)中心单丝丝径0.25mm，为预变形单丝(11)，变形量50μm，芯股(42)面丝丝径0.23mm，为直线单丝(12)，芯股(42)捻距10mm；面股(43)中心单丝丝径0.23mm，面丝丝径0.21mm，均为直线单丝(12)，捻距12mm；合成绳捻距22mm，捻向S。
将上述实施例中的钢丝绳与利用同等规格光面丝生产的一般钢丝绳进行对比，对比数据见表3：
Figure PCTCN2018120164-appb-000003
综合上表可以看出，本发明的特殊结构钢丝绳具有较高的疲劳次数，且样品在断裂后没有出现中心丝冒丝的情况，具有更好的应用效果。
上述实施例中的“7*7”规格的钢丝绳的制备工艺，单丝使用与实施例一中相同的工艺流程进行生产，选取1轮合格的0.25mm预变形单丝(11)和6轮0.23mm直线单丝(12)进行芯股(41)捻制生产，选取1轮合格的0.23mm直线单丝(12)和6轮0.21mm直线单丝(12)进行面股(42)捻制生产，1轮芯股(41)与6轮面股(42)进行股合绳生产出“7*7”规格的钢丝绳。
综上所述，本发明的钢丝绳的中心使用预变形的单丝，有效的提高了钢丝绳的疲劳次数和粘合力，解决了钢丝绳出现冒丝的问题；钢丝绳的生产工艺流程简单，生产设备易维护操作，具有小投入高收益的特性，适合大规模推广应用。
本发明并不局限于所述的实施例，本领域的技术人员在不脱离本发明的精神即公开范围内，仍可作一些修正或改变，故本发明的权利保护范围以权利要求书限定的范围为准。

Claims (10)

  1. 一种具有特殊结构的钢丝绳，其特征在于，所述的钢丝绳的截面呈圆形，包括预变形单丝和直线单丝，所述钢丝绳由预变形单丝与直线单丝螺旋缠绕而成，预变形单丝位于中心处；所述预变形单丝的数量为1至3根；所述直线单丝数量为3至18根。
  2. 如权利要求1所述的一种具有特殊结构的钢丝绳，其特征在于，所述的预变形单丝的直径大于直线单丝的直径。
  3. 如权利要求1或2所述的一种具有特殊结构的钢丝绳，其特征在于，所述的预变形单丝是在直线单丝的基础上经过变形器进行预变形处理得到。
  4. 如权利要求3所述的一种具有特殊结构的钢丝绳，其特征在于，所述预变形单丝的变形量在10μm到150μm之间。
  5. 一种制备如权利要求1-4任一项所述的具有特殊结构钢丝绳的生产工艺，其特征在于，所述的生产工艺包括如下步骤：
    S1：将需要预变形的直线单丝通过变形器进行预变形，预变形单丝的变形量在10μm到150μm之间；
    S2：将经过预变形的预变形单丝作为芯丝与直线单丝面丝进行编捻制备钢丝绳；以及，
    S3：将捻制后的钢丝绳通过校直器消除钢丝绳中的预应力并进行校直。
  6. 如权利要求5所述的具有特殊结构钢丝绳的生产工艺，其特征在于，所述的生产工艺还包括将上述步骤S3制备的钢丝绳作为中心股线与其他外层股线进行捻制制备多股结构的钢丝绳的步骤。
  7. 如权利要求5或6所述的具有特殊结构钢丝绳的生产工艺，其特征在于，在所述的步骤S1中，是将变形器设置于水箱拉丝机后面，在直线单丝拉拔后在出水箱玛口后经过变形器进行预变形得到预变形单丝。
  8. 如权利要求5或6所述的具有特殊结构钢丝绳的生产工艺，其特征在于，经过所述步骤S1进行变形的预变形单丝(11)的圈径不小于200mm。
  9. 如权利要求5或6所述的具有特殊结构钢丝绳的生产工艺，其特征在于，所述步骤S1中的变形器包括相互啮合的变形辊以及可以调节变形辊之间的间距的螺杆；所述的变形辊为一对或两对。
  10. 如权利要求9所述的具有特殊结构钢丝绳的生产工艺，其特征在于，相互啮合的变形辊成一定的角度放置，夹角在30°到90°，且所述变形辊外缘面为圆弧形。
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