CN109797587B - Steel wire rope composite sisal hemp rope core for elevator and preparation method thereof - Google Patents
Steel wire rope composite sisal hemp rope core for elevator and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a steel wire rope composite sisal hemp rope core for an elevator and a preparation method thereof, wherein the steel wire rope core is formed by weaving sisal hemp, aramid fiber and stainless steel wires as raw materials, the composite material rope core is formed by twisting 3-6 sisal hemp composite core strands for multiple times, and each sisal hemp composite core strand consists of sisal hemp yarns, palm yarns and aramid fiber/stainless steel ladle core yarns in a certain proportion. The palm fibers are uniformly distributed in the main core, and the aramid fiber/stainless steel core yarns are wrapped and twisted outside the main core. The rope core for the steel wire rope is prepared by compounding the palm yarns and the aramid/stainless steel core yarns with the sisal fibers, so that the defects of insufficient grease storage capacity, more burrs, poor uniformity, local bulges and the like of the sisal rope core are overcome, and the strength of the rope core made of the composite material is optimized.
Description
Technical Field
The invention belongs to the field of composite ropes, and particularly relates to a steel wire rope composite sisal rope core for an elevator and a preparation method thereof.
Background
The elevator steel wire rope plays a role in suspending the elevator car, and the safety instability of the elevator steel wire rope directly causes accidents.
The rope core plays a supporting role in the radial direction, the stable physical structure of the steel wire rope is kept, lubricating grease of the rope core is stored, and when the steel wire rope bears compressive stress due to bearing, part of grease is discharged to the space between the rope strands of the steel wire rope to play a lubricating role. The fiber rope core steel wire rope is soft and good in flexibility, can be turned by using a pulley with a small diameter, and is small in bending stress generated when the steel wire rope deforms around the pulley.
The existing sisal rope core has the following defects: (1) the diameter of the fiber rope core is not uniform and the dispersion difference is large; (2) the fiber rope core has insufficient grease storage capacity; (3) a large amount of short fibers (ramie yarn pimples) are gathered at the local part of the rope core, so that the twisted steel wire rope is locally raised, the raised part and the pulley are abraded due to the stress concentration effect and broken wires appear, and the whole rope is scrapped.
Therefore, the development of the sisal hemp composite rope core which has the advantages of uniform rope core, strong oil storage performance, strong tension and wear resistance is necessary.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the defects of the prior art, the invention provides a steel wire rope composite sisal hemp rope core for an elevator and a preparation method thereof.
The technical scheme is as follows: a steel wire rope composite sisal rope core for an elevator is characterized in that the composite rope core is formed by twisting 3-6 sisal composite core strands for multiple times, and each sisal composite core strand consists of sisal yarns, palm yarns and aramid/stainless steel metal wire core-spun yarns in a certain proportion; the proportion of the sisal yarns, the aramid fiber/stainless steel metal wire core-spun yarns and the palm yarns is 21: 1:3 to 15: 1: 3.
as an optimization: the sisal hemp filament has the length of 60-80cm and the fiber linear density of 35-45 dex.
As an optimization: the length of the palm fibers is 30-50cm, and the linear density of the fibers is 40-47 dex.
As an optimization: the aramid/stainless steel metal wire core-spun yarn is 10S, 20S, 30S or double-strand, the inner core is a 200D-400D stainless steel wire, and the outer layer is 200-400D aramid 1313.
According to the preparation method of the steel wire rope composite sisal hemp rope core for the elevator, the composite material rope core for the steel wire rope is prepared by the steps of pretreatment, ramie carding, drawing, ramie spinning, shearing, oil immersion, twisting and singeing; in the specific operation:
in the pretreatment process, sisal hemp silk and palm silk are subjected to softening and steaming treatment, wherein the ratio of the softener is glycerol: oleic acid: caustic soda: water =10:1:1:50, alkali-resistant penetrant OEP-70 is: 1-3% of lignin bleaching-assisting enzyme GR-M207, the mass ratio of which is 4-5%, and the pH value is controlled to be 8-12; uniformly spreading sisal and palm filaments respectively at a density of 4.8-6.4kg/m2The thickness is 4-6cm, and the softening agent is uniformly sprayed at 200g/m2(ii) a Steaming the sprayed fiber blanket at 50-70 deg.C for 30-60 min;
in the carding procedure, a C192 carding machine is selected and used for modifying the carding machine, a treatment liquid spraying opening is arranged above a fiber inlet, the treatment liquid is sprayed, and a micro dust collector is arranged below the carding machine; manually feeding sisal and palm fibers into a ramie carding machine at a speed of 65-80kg/h, wherein the weight of the sisal and palm fibers is 0.9-1.1 kg;
in the drawing process, a BJ-9.2 drawing frame is adopted, and three drawing processes are carried out, wherein the head drawing multiple is 6-8 times, and the number of combined slivers is 8-1; the drawing multiple is 6-8 times, and the number of combined slivers is 4 to 1; the drawing multiple of the triple drawing is 6 to 8 times, and the number of combined strips is 3 to 1.
As an optimization: in the ramie carding procedure, the sprayed treatment liquid is glycerol: oleic acid: caustic soda: water =10:1:1: 50.
As an optimization: in the spinning process, sisal hemp, aramid fiber/stainless steel metal wire core-spun yarn and palm silk are spun, and the twist is 70-110.
As an optimization: in the shearing process, in order to ensure that the yarn is smooth, the shearing process of the ramie yarn is required, harder hairiness of the ramie yarn is sheared, the speed of the vehicle is 10m/min, and the rotating speed of ball cutter blades at two sides of the ramie yarn is 200 r/min.
As an optimization: in the oil immersion process, the ramie yarn is packed and immersed in an oil bath at the temperature of 100-110 ℃ for 30-60min to prepare the ramie yarn.
As an optimization: in the twisting procedure, the oil ramie yarn is twisted with dry ramie yarn in a ratio of 1:3, 1:4, 2:6 or 3:4, and the finished product is prepared by singeing through a natural gas burner.
Has the advantages that: the rope core for the steel wire rope is prepared by compounding the palm yarns and the aramid/stainless steel core yarns with the sisal fibers, so that the defects of insufficient grease storage capacity, more burrs, poor uniformity, local bulges and the like of the sisal rope core are overcome, and the strength of the rope core made of the composite material is optimized.
The invention has the following specific beneficial effects:
in the invention, the aramid fiber/stainless steel core-spun yarn has extremely high tensile strength, good heat resistance, insulativity and corrosion resistance, and the aramid fiber coating structure provides partial oil absorption. The aramid fiber/stainless steel core yarn has high modulus and high toughness, and is entangled with hemp in the blending process to reduce the burr and uneven rate of hemp, raise the integral smoothness of hemp, reduce the burr eliminating rate in shearing and lower cost.
According to the invention, the palm silk fiber is a high-strength cellulose fiber, and partially replaces sisal, so that the toughness and the wire diameter uniformity of the sisal rope are improved. Meanwhile, partial oil absorption is provided, the oil immersion time of the ramie yarn is reduced, and the production efficiency is improved.
According to the invention, caustic soda in the softener provides an alkaline environment, and through the synergistic effect of caustic soda and lignin bleaching aid GR-M207, part of pectin in sisal and palm fibers is separated through a closed steaming process, meanwhile, the crystallinity of the fibers is reduced, and the orientation degree is improved, so that the softening of the fibers is achieved, the subsequent drawing and spinning are facilitated, the uniformity rate of the yarn diameter of the ramie yarns is improved, the hairiness is reduced, and the moisture absorption and oil absorption performance of the fibers are improved.
In the invention, natural gas burner singeing is mainly aimed at improving the smoothness of finished product rope cores, longer ramie yarn burrs are partially removed by a physical method in a shearing process, and short and hard ramie burrs on the finished product rope cores are treated at one time in a singeing process, so that the uniformity of the rope cores is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.
Detailed description of the preferred embodiment 1
A steel wire rope composite sisal rope core for an elevator is characterized in that the composite rope core is formed by twisting 3 sisal composite core strands for multiple times, and each sisal composite core strand consists of sisal yarns, palm yarns and aramid/stainless steel metal wire core-spun yarns in a certain proportion; the proportion of the sisal yarns, the aramid fiber/stainless steel metal wire core-spun yarns and the palm yarns is 21: 1: 3.
in this embodiment, the sisal filament has a length of 60cm and a linear density of 35 dex. The length of the palm fiber is 30cm, and the linear density of the fiber is 40 dex. The aramid fiber/stainless steel metal wire core-spun yarn is 10S in specification, the inner core is a 200D stainless steel wire, and the outer layer is 200 aramid fiber 1313.
In this embodiment, the preparation method of the steel wire rope composite sisal rope core for the elevator is as follows: the composite material rope core for the steel wire rope is prepared by pretreatment, ramie carding, drawing, ramie spinning, shearing, oil immersion, twisting and singeing.
In the pretreatment process, sisal hemp silk and palm silk are subjected to softening and steaming treatment, wherein the ratio of the softener is glycerol: oleic acid: caustic soda: water =10:1:1:50, alkali-resistant penetrant OEP-70 is: 1 percent, 4 percent of lignin bleaching-assisting enzyme GR-M207 by mass and 8 percent of pH value; uniformly spreading sisal and palm filaments respectively at a density of 4.8kg/m2The thickness is 4cm, and the softening agent is uniformly sprayed at 200g/m2(ii) a Steaming the sprayed fiber blanket at 50 deg.C for 30 min.
In the ramie carding process, select for use C192 ramie carding machine, reform transform the ramie carding machine, set up the treatment fluid sprinkler orifice in fibre import department top, spray the treatment fluid, the treatment fluid of spraying is glycerine: oleic acid: caustic soda: water =10:1:1:50, a mini-sized dust collector is arranged below the hackling machine; sisal and palm fibers are manually fed into a ramie carding machine in a bundle of 0.9, and the speed of the ramie carding machine is 65 kg/h.
In the drawing process, a BJ-9.2 drawing frame is adopted, and through three drawing processes, the drawing times of the drawing head are 6 times, and the number of combined slivers is 8 to 1; the drafting multiple is 6 times, and the number of combined strips is 4 to 1; the triple drawing multiple is 6 times, and the number of combined slivers is 3 to 1.
In the spinning process, sisal hemp, aramid fiber/stainless steel metal wire core-spun yarn and palm silk are spun, and the twist is 70.
In the shearing process, in order to ensure that the yarn is smooth, the shearing process of the ramie yarn is required, harder hairiness of the ramie yarn is sheared, the speed of the vehicle is 10m/min, and the rotating speed of ball cutter blades at two sides of the ramie yarn is 200 r/min.
In the oil immersion process, the ramie yarn is packed and immersed in an oil bath at 100 ℃ for 30min to prepare the ramie yarn.
In the twisting procedure, the oil ramie yarn and the dry ramie yarn are twisted in a ratio of 1:3, and the finished product is obtained through natural gas burner singeing processing.
Specific example 2
A steel wire rope composite sisal rope core for an elevator is characterized in that the composite rope core is formed by twisting 6 sisal composite core strands for multiple times, and each sisal composite core strand consists of sisal yarns, palm yarns and aramid/stainless steel metal wire core-spun yarns in a certain proportion; the proportion of the sisal yarns, the aramid fiber/stainless steel metal wire core-spun yarns and the palm yarns is 15: 1: 3.
in this embodiment, the sisal filament has a length of 80cm and a linear density of 45 dex. The length of the palm fiber is 50cm, and the linear density of the fiber is 47 dex. The specification of the aramid fiber/stainless steel metal wire core-spun yarn is 20S, the inner core is a 400D stainless steel wire, and the outer layer is 400D aramid fiber 1313.
In this embodiment, the preparation method of the steel wire rope composite sisal rope core for the elevator is as follows: the composite material rope core for the steel wire rope is prepared by pretreatment, ramie carding, drawing, ramie spinning, shearing, oil immersion, twisting and singeing.
In the pretreatment process, sisal hemp silk and palm silk are subjected to softening and steaming treatment, wherein the ratio of the softener is glycerol: oleic acid: caustic soda: water =10:1:1:50, alkali-resistant penetrant OEP-70 is: 3 percent, 5 percent of lignin bleaching-assisting enzyme GR-M207 by mass and 12 percent of pH value; uniformly spreading sisal and palm filaments respectively at a density of 6.4kg/m2The thickness is 6cm, and the softening agent is uniformly sprayed at 200g/m2(ii) a Steaming the sprayed fiber blanket at 70 deg.C for 60 min.
In the hackling process, select C192 hackling machine for use, reform transform the hackling machine, set up the treatment fluid spray opening in fibre import department top, spray the treatment fluid, the treatment fluid that sprays is glycerine: oleic acid: caustic soda: water =10:1:1:50, a mini-sized dust collector is arranged below the hackling machine; 1.1kg of sisal and palm fibers are manually fed into a ramie carding machine, and the speed of the ramie carding machine is 80 kg/h.
In the drawing process, a BJ-9.2 drawing frame is adopted, and three drawing processes are carried out, wherein the head drawing multiple is 6-8 times, and the number of combined slivers is 8-1; the drawing multiple is 6-8 times, and the number of combined slivers is 4 to 1; the drafting multiple of the three-fold is 6 to 8 times, and the number of combined slivers is 3 to 1.
In the spinning process, sisal hemp, aramid fiber/stainless steel metal wire core-spun yarn and palm silk are spun, and the twist is 110.
In the shearing process, in order to ensure that the yarn is smooth, the shearing process of the ramie yarn is required, harder hairiness of the ramie yarn is sheared, the speed of the vehicle is 10m/min, and the rotating speed of ball cutter blades at two sides of the ramie yarn is 200 r/min.
In the oil immersion process, the ramie yarn is packed and immersed in an oil bath at 110 ℃ for 60min to prepare the ramie yarn.
In the twisting procedure, the oil ramie yarn and the dry ramie yarn are twisted in a ratio of 1:4, and the finished product is obtained through natural gas burner singeing processing.
Specific example 3
A steel wire rope composite sisal rope core for an elevator is characterized in that the composite rope core is formed by twisting 4 sisal composite core strands for multiple times, and each sisal composite core strand consists of sisal yarns, palm yarns and aramid/stainless steel metal wire core-spun yarns in a certain proportion; the proportion of the sisal yarns, the aramid fiber/stainless steel metal wire core-spun yarns and the palm yarns is 18: 1: 3.
in this example, the sisal filament has a length of 65cm and a linear density of 38 dex. The length of the palm fiber is 34cm, and the linear density of the fiber is 42 dex. The specification of the aramid fiber/stainless steel metal wire core-spun yarn is 30S, the inner core is 230D stainless steel wire, and the outer layer is 220D aramid fiber 1313.
In this embodiment, the preparation method of the steel wire rope composite sisal rope core for the elevator is as follows: the composite material rope core for the steel wire rope is prepared by pretreatment, ramie carding, drawing, ramie spinning, shearing, oil immersion, twisting and singeing.
In the pretreatment process, sisal hemp silk and palm silk are subjected to softening and steaming treatment, wherein the ratio of the softener is glycerol: oleic acid: caustic soda: water =10:1:1:50, alkali-resistant penetrant OEP-70 is: 2 percent of lignin bleaching aid GR-M207 with the mass ratio of 4.2 percent and the pH value controlled to 9; uniformly spreading sisal and palm filaments respectively at a density of 5.3kg/m2The thickness is 5cm, and the softening agent is uniformly sprayed at 200g/m2(ii) a Steaming the sprayed fiber blanket to warmThe temperature is 56 deg.C, and the time is 38 min.
In the hackling process, select C192 hackling machine for use, reform transform the hackling machine, set up the treatment fluid spray opening in fibre import department top, spray the treatment fluid, the treatment fluid that sprays is glycerine: oleic acid: caustic soda: water =10:1:1:50, a mini-sized dust collector is arranged below the hackling machine; 1.0kg of sisal and palm filaments are manually fed into a ramie carding machine, and the speed of the ramie carding machine is 69 kg/h.
In the drawing process, a BJ-9.2 drawing frame is adopted, and three drawing processes are carried out, wherein the head drawing multiple is 7 times, and the number of combined slivers is 8 to 1; the drawing multiple is 6-8 times, and the number of combined slivers is 4 to 1; the triple drawing multiple is 7 times, and the number of combined slivers is 3 to 1.
In the spinning process, sisal hemp, aramid fiber/stainless steel metal wire core-spun yarn and palm silk are spun, and the twist is 85.
In the shearing process, in order to ensure that the yarn is smooth, the shearing process of the ramie yarn is required, harder hairiness of the ramie yarn is sheared, the speed of the vehicle is 10m/min, and the rotating speed of ball cutter blades at two sides of the ramie yarn is 200 r/min.
In the oil immersion process, the ramie yarn is packed and immersed in an oil bath at 104 ℃ for 45min to prepare the ramie yarn.
In the twisting procedure, the oil ramie yarn and the dry ramie yarn are twisted in a ratio of 2:6, and the finished product is obtained through natural gas burner singeing processing.
Specific example 4
A steel wire rope composite sisal rope core for an elevator is characterized in that the composite rope core is formed by twisting 5 sisal composite core strands for multiple times, and each sisal composite core strand consists of sisal yarns, palm yarns and aramid/stainless steel metal wire core-spun yarns in a certain proportion; the proportion of the sisal filaments, the aramid fiber/stainless steel metal wire core-spun yarns and the palm filaments is 16: 1: 3.
in this example, the sisal filament has a length of 75cm and a linear density of 42 dex. The length of the palm fiber is 44cm, and the linear density of the fiber is 45 dex. The aramid fiber/stainless steel metal wire core-spun yarn is double-stranded, the inner core is 320D stainless steel wire, and the outer layer is 360D aramid fiber 1313.
In this embodiment, the preparation method of the steel wire rope composite sisal rope core for the elevator is as follows: the composite material rope core for the steel wire rope is prepared by pretreatment, ramie carding, drawing, ramie spinning, shearing, oil immersion, twisting and singeing.
In the pretreatment process, sisal hemp silk and palm silk are subjected to softening and steaming treatment, wherein the ratio of the softener is glycerol: oleic acid: caustic soda: water =10:1:1:50, alkali-resistant penetrant OEP-70 is: 2.2 percent of lignin bleaching aid GR-M207 with the mass ratio of 4.6 percent and the pH value controlled to be 11; uniformly spreading sisal and palm filaments respectively at a density of 5.7kg/m2The thickness is 5.2cm, and the softening agent is uniformly sprayed to 200g/m2(ii) a Steaming the sprayed fiber blanket at 64 deg.C for 52 min.
In the ramie carding process, select for use C192 ramie carding machine, reform transform the ramie carding machine, set up the treatment fluid sprinkler orifice in fibre import department top, spray the treatment fluid, the treatment fluid of spraying is glycerine: oleic acid: caustic soda: water =10:1:1:50, a mini-sized dust collector is arranged below the hackling machine; 1.0kg of sisal and palm filaments are manually fed into a ramie carding machine, and the speed of the ramie carding machine is 74 kg/h.
In the drawing process, a BJ-9.2 drawing frame is adopted, and three drawing processes are carried out, wherein the head drawing multiple is 7 times, and the number of combined slivers is 8 to 1; the drafting multiple is 7 times, and the number of combined slivers is 4 to 1; the triple drawing multiple is 7 times, and the number of combined slivers is 3 to 1.
In the spinning process, sisal hemp, aramid fiber/stainless steel metal wire core-spun yarn and palm silk are spun, and the twist is 95.
In the shearing process, in order to ensure that the yarn is smooth, the shearing process of the ramie yarn is required, harder hairiness of the ramie yarn is sheared, the speed of the vehicle is 10m/min, and the rotating speed of ball cutter blades at two sides of the ramie yarn is 200 r/min.
In the oil immersion process, the ramie yarn is packed and immersed in oil bath at 108 ℃ for 56min to prepare the ramie yarn.
In the twisting procedure, the oil ramie yarn and the dry ramie yarn are twisted in a ratio of 3:4, and the finished product is obtained through natural gas burner singeing processing.
In the invention, the aramid fiber/stainless steel core-spun yarn has extremely high tensile strength, good heat resistance, insulativity and corrosion resistance, and the aramid fiber coating structure provides partial oil absorption. The aramid fiber/stainless steel core yarn has high modulus and high toughness, and is entangled with hemp in the blending process to reduce the burr and uneven rate of hemp, raise the integral smoothness of hemp, reduce the burr eliminating rate in shearing and lower cost.
According to the invention, the palm silk fiber is a high-strength cellulose fiber, and partially replaces sisal hemp, so that the toughness and the wire diameter uniformity of the sisal hemp rope are improved. Meanwhile, partial oil absorption is provided, the oil immersion time of the ramie yarn is reduced, and the production efficiency is improved.
In the invention, caustic soda in the softener provides an alkaline environment, and part of pectin in sisal and palm fibers is separated through a steam-tight process under the synergistic effect of the caustic soda and lignin bleaching aid GR-M207, and simultaneously the crystallinity of the fibers is reduced and the orientation degree is improved, so that the softening of the fibers is realized, the subsequent drawing and spinning are facilitated, the yarn diameter uniformity of ramie yarns is improved, the hairiness is reduced, and the moisture absorption and oil absorption performance of the fibers are improved.
In the invention, natural gas burner singeing is mainly aimed at improving the smoothness of finished product rope cores, longer ramie yarn burrs are partially removed by a physical method in a shearing process, and short and hard ramie burrs on the finished product rope cores are treated at one time in a singeing process, so that the uniformity of the rope cores is improved.
Claims (3)
1. The utility model provides a compound sisal hemp rope core of wire rope for elevator which characterized in that: the composite sisal rope core is formed by twisting 3-6 sisal composite core strands for multiple times, and each sisal composite core strand consists of sisal yarns, palm yarns and aramid/stainless steel metal wire core-spun yarns in a certain proportion; the proportion of the sisal yarns, the aramid fiber/stainless steel metal wire core-spun yarns and the palm yarns is 21: 1:3 to 15: 1: 3;
the specification of the aramid/stainless steel metal wire core-spun yarn is 10S, 20S or 30S, the inner core is a 200D-400D stainless steel wire, and the outer layer is 200-400D aramid 1313;
the preparation method of the steel wire rope composite sisal hemp rope core for the elevator comprises the steps of preprocessing, carding, drawing, spinning, shearing, oil immersion, twisting and singeing to prepare the steel wire rope composite sisal hemp rope core for the elevator;
in the specific operation:
in the pretreatment process, sisal hemp silk and palm silk are subjected to softening and steaming treatment, wherein the ratio of the softener is glycerol: oleic acid: caustic soda: water =10:1:1:50, alkali-resistant penetrant OEP-70 is: 1-3% of lignin bleaching aid GR-M207 with a mass ratio of 4-5%, and controlling the pH value to 8-12; uniformly spreading sisal and palm filaments respectively at a density of 4.8-6.4kg/m2The thickness is 4-6cm, and the softening agent is uniformly sprayed at 200g/m2(ii) a Steaming the sprayed fiber blanket at 50-70 deg.C for 30-60 min;
in the carding procedure, a C192 carding machine is selected and used for modifying the carding machine, a treatment liquid spraying opening is arranged above a fiber inlet, the treatment liquid is sprayed, and a micro dust collector is arranged below the carding machine; manually feeding sisal and palm fibers into a ramie carding machine by a bundle of 0.9-1.1kg, wherein the speed of the ramie carding machine is 65-80kg/h, and in the ramie carding procedure, the sprayed treatment solution is glycerol: oleic acid: caustic soda: water =10:1:1: 50;
in the drawing process, a BJ-9.2 drawing frame is adopted, and three drawing processes are carried out, wherein the head drawing multiple is 6-8 times, and the number of combined slivers is 8-1; the drawing multiple is 6-8 times, and the number of combined slivers is 4 to 1; the drafting multiple is 6-8 times, and the number of combined slivers is 3 to 1;
in the hemp spinning process, sisal hemp, aramid fiber/stainless steel metal wire core-spun yarn and palm silk are spun, and the twist is 70-110;
in the shearing process, in order to ensure that the yarn is smooth, a shearing process of the ramie yarn is required, harder hairiness of the ramie yarn is sheared, the speed of the vehicle is 10m/min, and the rotating speed of ball cutter blades at two sides of the ramie yarn is 200 r/min;
in the oil immersion process, the ramie yarn is packed and immersed in an oil bath at the temperature of 100-110 ℃ for 30-60min to prepare the ramie yarn; in the twisting procedure, the oil ramie yarn and the dry ramie yarn are twisted according to the ratio of 1:3, 1:4 or 3:4, and the finished product is prepared by natural gas burner singeing.
2. The steel wire rope composite sisal rope core for the elevator according to claim 1, wherein: the sisal hemp filament has the length of 60-80cm and the fiber linear density of 35-45 dtex.
3. The steel wire rope composite sisal rope core for the elevator according to claim 1, wherein: the length of the palm fiber is 30-50cm, and the linear density of the fiber is 40-47 dtex.
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| CN207295319U (en) * | 2017-08-05 | 2018-05-01 | 南通市通州区大达麻纺织有限公司 | Elevator wire rope Sisal Hemp Rope Core |
| CN107557934A (en) * | 2017-08-07 | 2018-01-09 | 南通市通州区大达麻纺织有限公司 | Sisal hemp yarn integral manufacturing technique |
| CN207435803U (en) * | 2017-11-21 | 2018-06-01 | 江苏法尔胜技术开发中心有限公司 | High-strength composite steel wire rope wire rope core |
| CN207435804U (en) * | 2017-11-21 | 2018-06-01 | 江苏法尔胜技术开发中心有限公司 | Composite fibre wire rope core |
| CN108316028A (en) * | 2018-03-20 | 2018-07-24 | 海城正昌工业有限公司 | A kind of steel wire rope composite fiber core and the preparation method and application thereof |
-
2019
- 2019-01-30 CN CN201910088680.XA patent/CN109797587B/en active Active
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Address after: 226300 No.8 Fengxian Road, Liuqiao Town, Tongzhou District, Nantong City, Jiangsu Province Applicant after: Jiangsu dada hemp textile technology Co.,Ltd. Applicant after: JIANGSU College OF ENGINEERING AND TECHNOLOGY Address before: 226300 No.8 Fengxian Road, Liuqiao Town, Tongzhou District, Nantong City, Jiangsu Province Applicant before: NANTONG CITY TONGZHOU DISTRICT DADA HEMP TEXTILE Co.,Ltd. Applicant before: JIANGSU College OF ENGINEERING AND TECHNOLOGY |
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