CN111501385A

CN111501385A - High-buffering water-repellent power cable and manufacturing method thereof

Info

Publication number: CN111501385A
Application number: CN202010365532.0A
Authority: CN
Inventors: 姜润喜; 刘瑞强; 沈明; 左龙峰; 李钦坤; 杜洪飞; 刘鹏; 公彦秀; 张曼
Original assignee: Shandong Lupu Science & Technology Co ltd; Ropenet Group Co Ltd
Current assignee: Shandong Lupu Science & Technology Co ltd; Ropenet Group Co Ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-08-07

Abstract

A high-buffer water-repellent power cable comprises: the rope pulling body is provided with a skin-core structure consisting of a rope skin and a rope core, wherein the rope core is formed by doubling 6-needle, 12-needle or 24-needle knitting structure strands, the rope skin is formed by weaving rope skin fibers outside the rope core and has a plain weave 32 weaving structure, a plain weave 40 weaving structure, a plain weave 48 weaving structure, a twill weave 32 weaving structure, a twill weave 40 weaving structure or a twill 48 weaving structure, the surface of the rope skin fibers is covered with a water repellent coating, and the diameter of the rope pulling body is 9-12 mm; the rope pulling eye ring is formed by folding and sewing the end part of the rope pulling body and is arranged at the end part of the rope pulling body, wherein the length of the sewing part is set to be 4-5 times of the diameter of the rope pulling body, the width of the sewing part is 1.1-1.4 times of the diameter of the rope pulling body, the density of two ends of a texture stitch of the sewing part is greater than the middle density, and the rope pulling eye ring is obtained by sewing a sewing thread with breaking strength between 220-240N; and a sheath provided outside the saving grommet ring for protecting a sewn portion of the saving grommet ring.

Description

High-buffering water-repellent power cable and manufacturing method thereof

Technical Field

The application belongs to the technical field of ropes, particularly relates to a dynamic cable, and particularly relates to a high-buffer-distance hydrodynamic cable and a manufacturing method thereof.

Background

In the field of high-altitude operation, self-protection awareness of operators is increasingly improved, protective articles in a personal protective clothing (PPE) are increasingly improved, and specialized and standardized protective articles quickly become the development trend of products in the field. The anti-falling protection system is a key system for personal protection in rope operation, tree operation, narrow space, high-altitude building operation, roof operation, high-altitude moving platform and rescue operation, and the anti-falling product is a key product in personal protection articles.

The cable is one of the anti-falling products, is very critical in an anti-falling protection system, is widely applied in the labor protection field and the outdoor sport field, and is an essential component in the product system.

However, the existing belaying products have poor buffering effect, low extensibility and low safety coefficient, and cannot ensure the personal safety after falling; meanwhile, the existing belaying products can easily absorb moisture, particularly when the belaying products are operated in rainy days or humid environments, the water absorption rate of the belaying is as high as 50%, the weight of the belaying after water absorption is increased, the protection performance is sharply reduced, and the safety of operators cannot be guaranteed.

Disclosure of Invention

In view of this, the embodiment of the application discloses a high-buffering water-repellent power cable, which includes:

the rope pulling body is provided with a skin-core structure consisting of a rope skin and a rope core, wherein the rope core is formed by doubling 6-needle, 12-needle or 24-needle knitting structure strands, the rope skin is formed by weaving rope skin fibers outside the rope core and has a plain weave 32 weaving structure, a plain weave 40 weaving structure, a plain weave 48 weaving structure, a twill weave 32 weaving structure, a twill weave 40 weaving structure or a twill 48 weaving structure, the surface of the rope skin fibers is covered with a water repellent coating, and the diameter of the rope pulling body is 9-12 mm;

the rope pulling eye ring is formed by folding and sewing the end part of the rope pulling body and is arranged at the end part of the rope pulling body, wherein the length of the sewing part is set to be 4-5 times of the diameter of the rope pulling body, the width of the sewing part is 1.1-1.4 times of the diameter of the rope pulling body, the density of two ends of a texture stitch of the sewing part is greater than the middle density, and the rope pulling eye ring is obtained by sewing a sewing thread with breaking strength between 220-240N;

and a sheath provided outside the saving grommet ring for protecting a sewn portion of the saving grommet ring.

Some embodiments disclose a high buffering water-repellent power cable, the rope core is knitted by nylon fiber, and the specification of the nylon fiber is 30-200D.

According to the high-buffering water-repellent power rope, the rope sheath fiber is nylon fiber with the specification of 210-1260D, and the twist of the nylon fiber rope strand is set to be 50-150 twists/m.

In some embodiments of the high-buffering water-repellent power belaying cable, the texture stitches of the sewing part are arranged in a staggered mode.

Some embodiments disclose a high-buffering water-repellent power rope, wherein the sewing part is composed of a plurality of layers of sewing threads, the width of each layer of sewing threads is different, and the texture stitches are arranged in a staggered mode.

On the other hand, some embodiments disclose a method for manufacturing a high-buffer water-repellent power lanyard, which is used for manufacturing the high-buffer water-repellent power lanyard disclosed in the embodiments of the present application, and the manufacturing method includes:

twisting a plurality of nylon fiber filaments into a strand of nylon fiber plied yarn, wherein the twisting twist is set to be 50-150 twists/m;

knitting the nylon fiber rope strands into a piece of rope leather cloth;

putting the rope leather cloth into coating liquid containing a water repellent finishing agent, and performing dip coating treatment;

performing heat setting on the rope leather cloth subjected to coating treatment;

splitting the rope leather cloth subjected to heat setting treatment to obtain water-repellent nylon fiber compound yarns, doubling a plurality of water-repellent nylon fiber compound yarns, and pre-weaving the water-repellent nylon fiber compound yarns into yarn bobbins, wherein half of the yarn bobbins are in an S twisting direction, and half of the yarn bobbins are in a Z twisting direction;

the nylon fiber filaments are knitted into rope core folded yarns by a 6-needle, 12-needle or 24-needle crochet machine;

heat setting a plurality of rope core folded yarns, and stranding to obtain rope cores;

the water-repellent polyamide fiber strand is used as a rope sheath strand, and is combined with a rope core to be woven into a rope body;

setting sewing textures as a tail end reinforcing form, setting the width and the length of a sewing part, and respectively folding back two ends of the rope pulling body to be sewn with the rope pulling body to form an eye ring;

and arranging a sheath at the sewing part of the eye ring, and fixing the sheath to obtain the high-buffer water-repellent power rope.

Some embodiments disclose a manufacturing method of a high-buffering water-repellent power belaying rope, wherein 3-8 nylon fiber filaments are twisted and combined into a strand of nylon fiber plied yarn.

According to the manufacturing method of the high-buffering water-repellent power belaying cable disclosed by some embodiments, a sewing part is sewn by adopting a texture frequency conversion sewing method.

In some embodiments, the manufacturing method of the high-buffer water-repellent power saving rope is disclosed, wherein the temperature for performing heat setting on the rope leather cloth is set to be 50-190 ℃, and the time is set to be 10-120 minutes.

In some embodiments, the manufacturing method of the high-buffer water-repellent power rope, disclosed by the embodiment, sets the temperature for heat setting of the rope core folded yarn to be 70-160 ℃ and the time to be 30-120 minutes.

The high-buffering water-repellent power retrieval rope disclosed by the embodiment of the application has the advantages that the rope core is of a high-extension knitted plied yarn structure, the rope skin fibers are subjected to water-repellent coating finishing, eye rings are formed by sewing through a variable frequency sewing process, the water absorption rate is less than 3%, the water shrinkage rate is less than 4.5%, the slip rate of the rope core is less than 0.4%, the static elongation rate is 7.5-10%, the first maximum impact force can reach 8.5KN, the first maximum dynamic elongation rate is 35-40%, the rope is not broken after being subjected to load protection for 5 minutes under the static tension of 25KN, the knotting coefficient is less than 0.9, the high-buffering water-repellent power retrieval rope has excellent extensibility and buffering performance, is safe and reliable to use, and can be widely applied to anti.

Drawings

FIG. 1 embodiment 1 is a schematic structural diagram of a high-buffer water-repellent power cable

FIG. 2 embodiment 1 is a schematic structural view of a high-buffering water-repellent power cable-saving cable body

FIG. 3 is a schematic view of a texture stitch of a rope sewing part of a highly buffered water repellent power rope in embodiment 2

FIG. 4 example 2 is a graph of texture stitches of a highly buffered water repellent power saving sewing part

FIG. 5 is a schematic view of a texture stitch of a rope sewing part of embodiment 3 with high buffering water repellent power

FIG. 6 is a schematic view of a texture stitch of a rope sewing part of the embodiment 4 with high buffering water repellent power

Reference numerals

1. Rope body 11, rope sheath 12 and rope core

2. A belaying eye ring 3, a sheath 4 and a sewing part

41. A first texture stitch 42, a second texture stitch 43, and a third texture stitch

D₄₁A first texture width D₄₂A second texture width D₄₃Third texture width

S₄₁A first stitch length S₄₂Second pitch S₄₃Third stitch length

Detailed Description

The word "embodiment" as used herein, is not necessarily to be construed as preferred or advantageous over other embodiments, including any embodiment illustrated as "exemplary". Performance index tests in the examples of this application, unless otherwise indicated, were performed using routine experimentation in the art. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; other test methods and techniques not specifically mentioned in the present application are those commonly employed by those of ordinary skill in the art.

The terms "substantially" and "about" are used throughout this disclosure to describe small fluctuations. For example, they may mean less than or equal to ± 5%, such as less than or equal to ± 2%, such as less than or equal to ± 1%, such as less than or equal to ± 0.5%, such as less than or equal to ± 0.2%, such as less than or equal to ± 0.1%, such as less than or equal to ± 0.05%. Concentrations, amounts, and other numerical data may be expressed or presented herein in a range format. Such range format is used merely for convenience and brevity and thus should be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited. For example, a numerical range of "1 to 5%" should be interpreted to include not only the explicitly recited values of 1% to 5%, but also include individual values and sub-ranges within the indicated range. Thus, included in this numerical range are individual values, such as 2%, 3.5%, and 4%, and sub-ranges, such as 1% to 3%, 2% to 4%, and 3% to 5%, etc. This principle applies equally to ranges reciting only one numerical value. Moreover, such an interpretation applies regardless of the breadth of the range or the characteristics being described.

In this disclosure, including the claims, all conjunctions such as "comprising," including, "" carrying, "" having, "" containing, "" involving, "" containing, "and the like are to be understood as being open-ended, i.e., to mean" including but not limited to. Only the conjunctions "consisting of … …" and "consisting of … …" are closed conjunctions.

In the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In the examples, some methods, means, instruments, apparatuses, etc. known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application. On the premise of no conflict, the technical features disclosed in the embodiments of the present application may be combined arbitrarily, and the obtained technical solution belongs to the content disclosed in the embodiments of the present application. References herein to Z twist and S twist are merely intended to describe two opposite twisting directions.

In some embodiments, a highly buffered water repellent power lanyard includes a lanyard body, a lanyard eye ring and a sheath; the rope core is formed by doubling 6-needle, 12-needle or 24-needle knitting structure compound yarns, the rope skin is formed by weaving rope skin fibers outside the rope core, the weaving structure is plain weave 32 weaving, plain weave 40 weaving, plain weave 48 weaving, twill weave 32 weaving, twill weave 40 weaving or twill weave 48 weaving, the surface of the rope skin fibers is covered with a water repellent coating, and the diameter of the rope body is 9-12 mm; the rope-pulling eye ring is formed by folding and sewing the end part of a rope-pulling body, the end part of the rope-pulling body is folded and then sewn with the rope-pulling body to form an eye ring with a set size, the eye ring is usually positioned at the end part of the rope-pulling body, the length of a sewing part is set to be 4-5 times of the diameter of the rope-pulling body, the width of the sewing part is 1.1-1.4 times of the diameter of the rope-pulling body, the density of two ends of a grain stitch of the sewing part is greater than the middle density, and the rope-pulling eye ring is sewn by a sewing thread with breaking strength of 220-240N; usually the eye ring is provided in two, located at both ends of the lanyard body; the protective sleeve is arranged outside the belaying eye ring and used for protecting the sewing part of the belaying eye ring.

As an optional embodiment, the rope core is formed by knitting nylon fibers, and the specification of the nylon fibers is 30-200D.

According to an optional embodiment, the rope sheath fiber is nylon fiber, the specification of the nylon fiber is 210-1260D, and the twist of the nylon fiber strand is set to be 50-150 twists/m.

The eye ring is formed by sewing the end portion of the lanyard body and the lanyard body together, and the size of the eye ring is determined by the length of the end portion folded back and the sewing length. Generally, the size of the eye ring is set according to the use requirement, then the length of the end part of the rope body which is folded back is determined according to the set length, the folded rope end part is overlapped with the rope body, the overlapped part is covered by a sewing mode, a firm and beautiful sewing part is formed, and the length, the width, the texture stitch, the sewing thread, the sewing speed and the like of the sewing part are determined according to the requirements of the strength and the like of the eye ring.

Generally, the texture stitch refers to a presentation mode of a sewing thread in a sewing process, and generally, on the premise of ensuring the performance of a sewing part, the texture stitch needs to have a small number of needles, a small size and an attractive stitch. The sewing needle number is few, and the sewing thread use amount is little, and the sewing time is short, and production efficiency is high. The sewing needle distances of the sewing parts are usually distributed in a staggered mode, the rope sheath and the rope core can be fully fixed, the effective combination fixing part of the rope sheath and the rope core is enlarged, and the displacement of the rope pulling body is reduced.

In tests, the length of the sewing part is related to the utilization rate of the rope pulling strength, the utilization rate of the rope pulling strength is in direct proportion to the length of the sewing part within a certain range, and after the utilization rate of the rope pulling strength is exceeded, the length of the sewing part is increased and cannot be increased, for example, the length of the sewing part is 4-5 times of the diameter of the rope pulling, the sewing part has proper strength, and the requirement that the strength of the sewing part is larger than 22KN can be met.

In the experiment, the sewing texture stitch is distributed in a staggered way to fully fix the rope body and reduce the damage of the sewing action to the rope in the sewing process of the sewing part, so the texture of the sewing part is preferably distributed in a staggered way, and a flat distribution way can be selected.

Usually, the quantity of the sewing threads of the sewing part is related to the strength of the sewing part, the increased quantity of the sewing threads can enhance the strength of the sewing part, and as an optional implementation mode, the sewing mode of end reinforcement can be selected, and the strength of the tail end of the sewing part is increased, so that the overall strength of the sewing part is effectively enhanced, and meanwhile, the texture stitches at the middle position are not influenced. In the using process of the belaying, the belaying rope body can deform, the deformed sewing end has serious tensile deformation on the sewing part, the integral strength of the sewing part can be influenced, the sewing mode of the tail end reinforcement type hair is adopted, the deformation of the sewing part can be effectively prevented, and the integral strength of the sewing part is enhanced.

In general, the sewing thread also has an important influence on the strength of the sewn part, and the strength, adhesiveness, smoothness, and the like of the sewing thread are all related thereto. The strength is the inherent performance of the sewing thread, and is the basis of the sewing part with strength, and the sewing thread with proper breaking force can ensure that the sewing part has proper strength; the adhesiveness is an auxiliary factor of the sewing thread, the sewing thread with good adhesiveness can maintain the strength of the sewing thread in sewing, and the strength loss is smaller as the adhesiveness is better; the better the smoothness, the less the loss of strength of the sewing thread. As an alternative embodiment, sewing threads with breaking strength of 220-240N are selected, such as AEN66 Bundy 1050D/3 sewing threads and N66 Bundy 1050D/3 sewing threads.

As an optional implementation mode, the texture stitches of the sewing part of the high-buffer water-repellent power saving rope are arranged in a staggered mode.

As an alternative embodiment, the sewing part is composed of a plurality of layers of sewing threads, each layer of sewing threads has different widths, and the texture stitches are arranged in a staggered manner.

As an optional implementation mode, the sewing part is composed of single-layer sewing threads, the sewing needle pitches are different, the sewing threads are arranged at intervals, and sewing textures which change repeatedly according to a certain rule are formed.

In some embodiments, the manufacturing method of the high-buffer water-repellent power saving rope comprises the following steps:

twisting a plurality of nylon fiber filaments into a strand of nylon fiber plied yarn, wherein the twisting twist is set to be 50-150 twists/m; for example, the twist may be set to 50 twists/m, 60 twists/m, 70 twists/m, 80 twists/m, 90 twists/m, 100 twists/m, 110 twists/m, 120 twists/m, 130 twists/m, 140 twists/m, 150 twists/m; the number of the selected nylon fiber filaments can be set to be 3-8, such as 3, 4, 5, 6, 7 and 8;

knitting the nylon fiber rope strands into a piece of rope leather cloth;

putting the rope leather cloth into coating liquid containing a water repellent finishing agent, and performing dip coating treatment; usually, the rope leather cloth is placed in the coating liquid and soaked for 1-3 minutes, and the coating liquid is fully soaked and covered on the rope leather cloth, so that the dipping coating treatment can be completed;

performing heat setting on the rope leather cloth subjected to coating treatment; the rope leather cloth is usually subjected to loose heat setting treatment, the temperature of heat setting can be set to be 50-190 ℃, and the duration of heat setting is 10-120 minutes; according to the number and the heat setting degree of the vellum, the heat setting temperature can be set to 50 ℃, 60 ℃, 70 ℃, 80 ℃, 90 ℃, 100 ℃, 110 ℃, 120 ℃, 130 ℃, 140 ℃, 150 ℃, 160 ℃, 170 ℃, 180 ℃ and 190 ℃, and the heat setting time can be set to 10 minutes, 20 minutes, 30 minutes, 40 minutes, 50 minutes, 60 minutes, 70 minutes, 80 minutes, 90 minutes, 100 minutes, 110 minutes and 120 minutes;

splitting the rope leather cloth subjected to heat setting treatment to obtain water-repellent nylon fiber plied yarns, doubling a plurality of water-repellent nylon fiber plied yarns, and pre-weaving the water-repellent nylon fiber plied yarns into bobbins, wherein half of bobbins rotate clockwise, namely yarns are in an S twisting direction, and half of bobbins rotate anticlockwise, namely yarns are in a Z twisting direction; twisting and doubling the nylon fiber filament plied yarns on a full-automatic doubling machine to obtain yarn bobbins for weaving, wherein one half of the plied yarns are in an S twisting direction, the other half of the plied yarns are in a Z twisting direction, the twist degrees are set to be the same, and the twist degrees are 50-150 twists/m, so that the yarn bobbins which conform to the size of a spindle of a high-speed weaving machine are pre-woven; for example, the twist may be set to 50 twists/m, 60 twists/m, 70 twists/m, 80 twists/m, 90 twists/m, 100 twists/m, 110 twists/m, 120 twists/m, 130 twists/m, 140 twists/m, 150 twists/m; for example, for a 32-braided structure rope sheath, yarns of 16 bobbins are in an S twisting direction, and yarns of 16 bobbins are in an Z twisting direction;

heat setting a plurality of rope core folded yarns, and stranding to obtain rope cores; the rope core compound yarn is usually subjected to loose heat setting, the heat setting temperature is set to be 70-160 ℃, and the heat setting time is set to be 30-120 minutes; according to the number and the heat setting degree of the rope core strand, the heat setting temperature can be set to 70 ℃, 80 ℃, 90 ℃, 100 ℃, 110 ℃, 120 ℃, 130 ℃, 140 ℃, 150 ℃ and 160 ℃, and the heat setting time can be set to 30 minutes, 40 minutes, 50 minutes, 60 minutes, 70 minutes, 80 minutes, 90 minutes, 100 minutes, 110 minutes and 120 minutes;

setting sewing textures as a tail end reinforcing form, setting the width and the length of a sewing part, and respectively folding back two ends of the rope pulling body to be sewn with the rope pulling body to form an eye ring; as an optional implementation mode, the sewing part is sewn by adopting a texture frequency conversion sewing method, the width and the needle pitch of a texture stitch are respectively changed according to a certain rule, different needle pitches and widths are set at different sewing stages, and the sewing part with a unique shape is obtained, so that the strength of the sewing part can be strengthened, the sewing parts with different appearances can be obtained, and the attractiveness of the power rope can be improved;

and arranging a sheath at the sewing part of the eye ring, and fixing the sheath to obtain the high-buffer water-repellent power rope. The plastic suction sheath can be selected as a fixing sheath, and the plastic suction sheath is fixed at the sewing part of the eye ring in a heat source heating mode.

The coating liquid comprises 20-40 wt% of water repellent agent, 2-5 wt% of cross-linking agent and the balance of water, wherein the cross-linking agent is FE L New cellulose cross-linking agent of Huntsman company in the United states, and the water repellent agent is ICO-REPE L of ICOATS company in Belgium.

The technical details are further illustrated in the following examples.

Example 1

Fig. 1 is a schematic structural diagram of a high-buffer water-repellent power cable disclosed in embodiment 1, and fig. 2 is a schematic structural diagram of a high-buffer power cable body disclosed in embodiment 1. The figure illustrates a power belay portion structure including an end eye ring.

In the embodiment 1, the high-buffer water-repellent power rope comprises a rope body 1, the end part of the rope body 1 is folded back to the rope body direction and is overlapped with the rope body 1, a rope eye ring 2 is formed by sewing, a sewing part 4 obtained by the sewing mode covers most of the overlapped part of the rope end part and the rope body part and is fixedly connected with the rope end part and the rope body part, the sewing part 4 is rectangular as a whole, the length of the sewing part 4 is 4-5 times of the diameter of the rope body, and the width of the sewing part is 1.1-1.4 times of the diameter of the rope body; the jacket 3 is arranged outside the sewing part 4, and the jacket 3 tightly covers the rope body of the sewing part 4 and the nearby part thereof, so that the sewing part 4 and the nearby part thereof are well protected.

The rope body 1 is of a skin-core structure, wherein the rope core 12 is of a knitted structure, and the rope skin 11 is formed by weaving a rope skin fiber rope strand outside the rope core 12.

Example 2

Fig. 3 is a schematic view of a texture stitch of the high-buffer water-repellent power rope sewing part disclosed in embodiment 2, and fig. 4 is a real view of the texture stitch of the high-buffer water-repellent power rope sewing part disclosed in embodiment 2.

In embodiment 2, the texture stitches of the high-buffer water-repellent power lanyard sewing part 4 comprise three layers of sewing texture stitches, the three layers of sewing texture stitches are mutually crossed and overlapped to form texture stitches distributed in an interlaced manner, wherein the first layer of sewing texture stitches form a first texture stitch 41 with a width of a first texture width D₄₁The second layer of sewn grain stitches forming a second layer of grain stitches 42 having a second grain width D₄₂The third layer of sewn grain stitches forms a third layer of grain stitches 43 having a width of a third grain width D₄₃Wherein D is₄₁Greater than D₄₂，D₄₂Greater than D₄₃First gauge S of first layer of grain stitch 41₄₁A second gauge S less than the second layer of grain stitches 42₄₂Second gauge S of the second layer of grain stitches 42₄₂Less than the third gauge S of the third layer of grain stitches 43₄₃Thereby forming an overall arrangement mode that the first texture stitch 41, the second texture stitch 42 and the third texture stitch 43 are staggered and repeatedly arranged in sequence.

As can be seen in FIG. 4, the first texture stitch 41 is located on the outermost layer of the sewn portion, and the first texture width D₄₁Corresponding to the width of the sewing part.

Example 3

Fig. 5 is a schematic view of a texture stitch of a sewn portion of the rope made by the highly buffered water repellent power disclosed in embodiment 3.

In embodiment 3, the texture stitches of the sewing part 4 include two layers, the width and the needle pitch of the two layers of texture stitches are different, and the first layer of texture stitches and the second layer of texture stitches are staggered and regularly arranged; in addition, the central part of each layer of texture stitches has a stitch length smaller than that of the two end parts, namely, on the sewing part in unit length, the texture stitches of the central part are sparse, the texture stitches of the two end parts are dense, namely, the density of the two ends of the texture stitches of the branch part is larger than that of the middle part, and the sewing effect of terminal reinforcement is realized.

Example 4

Fig. 6 is a schematic view of a texture stitch of a sewn portion of the rope made by the highly buffered water repellent power disclosed in embodiment 4.

The sewn part 4 in example 4 has a plurality of sewn part units arranged repeatedly and connected in sequence, and a sewn part having a rectangular shape as a whole is obtained;

along the length direction of the sewing part, the width of the texture stitch inside each sewing part unit is reduced in sequence, trapezoidal textures are formed, a plurality of trapezoidal textures are connected in sequence at the head, and the overall texture stitch shape with the width gradually changed repeatedly is formed.

Example 5

The high-buffer water-repellent power saving rope disclosed in embodiment 5 is manufactured by the following method, specifically including:

twisting 3 nylon fiber filaments into a strand of nylon fiber compound yarn, wherein the twisting twist is set to be 150 twists/m;

knitting the nylon fiber rope strands into a rope leather cloth through a small circular knitting machine, wherein the cloth width is 100mm, and the thickness is 10 mm;

placing the rope leather cloth in coating liquid containing a water repellent finishing agent, dipping the coating for 1 minute, and taking out, wherein the coating liquid comprises 40 wt% of water repellent agent, 5 wt% of cross-linking agent and the balance of water, the cross-linking agent is FE L New cellulose cross-linking agent of Huntsman company in America, and the water repellent agent is ICO-REPE L of ICOATS company in Belgium;

placing the coated rope leather cloth in a thermal environment at 190 ℃ for 10 minutes for heat setting;

splitting the rope leather cloth subjected to heat setting treatment to obtain water-repellent nylon fiber compound yarns, doubling 3 water-repellent nylon fiber compound yarns with the specification of 840D, pre-weaving the water-repellent nylon fiber compound yarns into bobbins, wherein half of the bobbins rotate clockwise, namely in an S twisting direction, and half of the bobbins rotate anticlockwise, namely in a Z twisting direction;

the nylon fiber filaments are knitted into rope core folded yarns by a 24-needle crochet machine;

placing 8 rope core folded yarns in a thermal environment of 90 ℃ for 80 minutes, carrying out heat setting, and stranding to obtain rope cores;

and arranging the protective sleeve at the sewing part of the eye ring, fixing the plastic suction protective sleeve, and heating and fixing to obtain the high-buffer water-repellent power rope.

The performance index test is performed on the high-buffer water-repellent power cable obtained in the embodiment 5, and the result is as follows: the water absorption rate is 2%, the shrinkage rate is 3.5%, the skin-core sliding rate is 0.3%, the static elongation rate is 8%, the first maximum impact force is 8.6KN, the first maximum dynamic elongation rate is 37%, the static tension is 25KN, and the knotting coefficient is 0.8.

The technical solutions and the technical details disclosed in the embodiments of the present application are only examples to illustrate the concept of the present application, and do not constitute a limitation to the technical solutions of the present application, and all the inventive changes that are made to the technical details disclosed in the present application without inventive changes have the same inventive concept as the present application, and are within the protection scope of the claims of the present application.

Claims

1. A high-buffer water-repellent power cable is characterized by comprising:

the rope pulling body is provided with a sheath-core structure consisting of a rope sheath and a rope core, wherein,

the cord is formed by doubling 6-needle, 12-needle or 24-needle knitting structure strands,

the rope sheath is formed by weaving rope sheath fibers outside the rope core and has a plain 32-woven structure, a plain 40-woven structure, a plain 48-woven structure, a twill 32-woven structure, a twill 40-woven structure or a twill 48-woven structure, a water repellent coating covers the surface of the rope sheath fibers, and the diameter of the rope pulling body is 9-12 mm;

the rope pulling eye ring is formed by folding and sewing the end part of the rope pulling body and is arranged at the end part of the rope pulling body, wherein the length of a sewing part is set to be 4-5 times of the diameter of the rope pulling body, the width of the sewing part is 1.1-1.4 times of the diameter of the rope pulling body, the density of two ends of a texture stitch of the sewing part is greater than the middle density, and the rope pulling eye ring is obtained by sewing a sewing thread with breaking strength between 220-240N;

2. The high-buffer water-repellent power cable according to claim 1, wherein the rope core is knitted from nylon fibers, and the specification of the nylon fibers is 30-200D.

3. The high-buffer water-repellent power cable according to claim 1, wherein the sheath fiber is nylon fiber with a specification of 210-1260D, and the twist of the nylon fiber strand is set to be 50-150 twists/m.

4. The high-buffer water-repellent power cable according to claim 1, wherein the texture stitches of the sewing portion are arranged in a staggered manner.

5. The high-buffer water-repellent power rope according to claim 1, wherein the sewing part is composed of a plurality of layers of sewing threads, the width of each layer of sewing threads is different, and the texture stitches are arranged in a staggered manner.

6. A manufacturing method of a high-buffer water-repellent power lanyard, which is used for manufacturing the high-buffer water-repellent power lanyard of any one of claims 1 to 5, and is characterized by comprising the following steps:

knitting the nylon fiber rope strands into a piece of rope leather cloth;

7. The manufacturing method of the high-buffer water-repellent power belaying cable according to claim 6, characterized in that 3-8 nylon fiber filaments are twisted into a strand of nylon fiber plied yarn.

8. The manufacturing method of the high-buffer water-repellent power cable according to claim 6, characterized in that the sewing part is sewn by a texture frequency conversion sewing method.

9. The manufacturing method of the high-buffer water-repellent power saving rope according to claim 6, wherein the temperature for heat setting the rope leather cloth is set to be 50-190 ℃ and the time is set to be 10-120 minutes.

10. The manufacturing method of the high-buffer water-repellent power rope according to claim 6, wherein the temperature for heat setting the rope core strand is set to 70-160 ℃ and the time is set to 30-120 minutes.