Preparation method of high-molecular rope core and steel wire rope prepared from high-molecular rope core

Abstract

The invention discloses a preparation method of a polymer rope core and a steel wire rope prepared by the polymer rope core, and aims to provide a preparation method of a polymer steel wire rope core beneficial to improving tensile strength, which comprises the following steps: step 1, preparing polymer industrial filaments, and carrying out incoming material inspection; step 2, immersing the macromolecular industrial filaments in oil; 3, after oil immersion is completed, a plurality of sets of polymer industrial filaments are prepared and twisted into a strand of yarn count through left twisting; wherein an anti-counterfeiting mark belt is arranged in one group of high-molecular industrial filaments and is synchronously twisted in the yarn counts; and 4, synchronously twisting the twisted strands of yarns into the rope core through left twisting. The rope core has the beneficial effects that compared with a rope core of a single structure, the purpose of improving the tensile strength is achieved.

Description

Technical Field

[0001] The invention relates to the technical field related to steel wire rope cores, and in particular to a method for preparing a polymer core and a steel wire rope prepared therefrom. Background Art

[0002] Steel wire rope is a spiral steel wire bundle twisted together according to certain rules with steel wires that meet the requirements of mechanical properties and geometric dimensions. Steel wire rope is composed of steel wire, rope core and grease. Steel wire rope is first twisted into strands by multiple layers of steel wires, and then a certain number of strands are twisted into a spiral rope with the rope core as the center. In material handling machinery, it is used for lifting, traction, tensioning and bearing. Steel wire rope has high strength, light weight, stable operation, not easy to break suddenly, and reliable operation.

[0003] In the prior art, most of the steel wire ropes are only twisted by a number of outer strands to form a hollow structure, or are evenly twisted by a number of outer strands around the outside of a rope core of a single structure, resulting in insufficient overall tensile strength of the steel wire rope. Summary of the invention

[0004] The present invention aims to overcome the deficiency of insufficient overall tensile strength of steel wire ropes in the prior art and provides a method for preparing a polymer rope core which is beneficial to improving the tensile strength and a steel wire rope prepared thereby.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A method for preparing a polymer rope core comprises the following steps: Step 1: Prepare polymer industrial filaments and conduct incoming material inspection; Step 2, soaking the polymer industrial filament in oil; Step 3: After the oil immersion is completed, several groups of polymer industrial filaments are prepared and twisted into a yarn count by left twisting respectively; an anti-counterfeiting mark band is arranged in one group of polymer industrial filaments and twisted into the yarn count synchronously; Step 4: Synchronously twist the twisted yarns into a rope core by left twisting.

[0006] Through the above steps, it can be seen that the polymer industrial filament is first twisted into several strands of yarn, and then several strands of yarn are twisted into a rope core. Compared with the rope core with a single structure, it achieves the purpose of improving the tensile strength; at the same time, an anti-counterfeiting logo belt is arranged in one group of polymer industrial filaments and twisted in the yarn simultaneously, which is conducive to further improving the tensile strength on the one hand, and on the other hand, it is convenient for consumers to easily identify the authenticity of the product and is conducive to protecting the company's own rights and interests.

[0007] Preferably, the polymer industrial filament is polyester industrial filament, which has excellent properties such as high breaking strength, high elastic modulus, low elongation, good impact resistance, good dimensional stability, good toughness, and is conducive to improving tensile strength.

[0008] Preferably, in step 2, the specific oil immersion operation steps are: Step a, preparing materials according to production requirements, and re-inspecting the polymer industrial filaments to check their surface quality and flatness to ensure product quality; Step b, installing the polymer industrial filament on the oil immersion device, and leading out the filament end in a clockwise direction; Step c, pulling the lead-out filament end through the ceramic buckle on the oil immersion device to facilitate the positioning of the polymer industrial filament; Step d, sequentially performing oiling and oil filtering operations on the polymer industrial filaments; Step e, winding the polymer industrial filament onto a take-up reel for take-up.

[0009] In the above steps, the polymer industrial filaments are continuously oiled and filtered during the process of being taken up by the take-up reel, so as to ensure that the polymer industrial filaments have a uniform oil content.

[0010] Preferably, in step d, when passing through oil, the oil temperature is set to 105±10°C according to the process requirements; then the oil pressure roller is lifted, and after the polymer industrial filament passes through the oil pressure roller, the oil pressure roller is lowered so that part of the polymer industrial filament is immersed in oil; through the pressing of the oil pressure roller, the polymer industrial filament can always be immersed in grease when being pulled under the drive of the take-up reel, so as to ensure that the polymer industrial filament can fully contact with the grease; when filtering the oil, the polymer industrial filament is passed through the oil filter pressure roller, and the gap of the oil filter pressure roller is adjusted according to the process requirements. By adjusting the gap of the oil filter pressure roller, it is beneficial to control the oil content.

[0011] Preferably, during the twisting process of the rope core, the tension of the polymer industrial filament is 300-500N.

[0012] Preferably, in step three, the yarn is twisted from three strands of polymer industrial filaments.

[0013] Preferably, in step 4, the rope core is twisted from three strands of yarn, and the twist pitch range is 3.8 to 4.2 times the rope core diameter. The number of strands of polymer industrial filaments and yarn can be flexibly adjusted according to actual production process requirements to meet different scene requirements and improve practicality.

[0014] As another preferred embodiment, the present invention also provides a steel wire rope made of a polymer rope core, comprising a plurality of rope strands and a resin layer, wherein the plurality of rope strands are uniformly wound around the outer surface of the rope core along the circumference of the rope core, lubricating grease is filled between the rope strands and the rope core, and the rope strands, the rope core and the lubricating grease are all coated in the resin layer. The lubricating grease can play a lubricating effect and reduce friction; the resin layer is conducive to reducing the wear on the rope strand surface and extending the service life of the steel wire rope, and is conducive to ensuring the stability of the rope diameter on the other hand.

[0015] Preferably, the rope strands include a central wire and a plurality of steel wires, and the plurality of steel wires are twisted helically around the outer surface of the central wire, which helps to ensure the stability of the rope diameter, the firmness of the texture, and the improvement of the bending performance and toughness of the rope strands.

[0016] Preferably, a plurality of rope strands are twisted in a spiral shape on the outer surface of the rope core, which helps to ensure the stability of the rope diameter, the firmness of the rope texture, and improve the bending performance and toughness of the rope strands.

[0017] The beneficial effects of the present invention are as follows: compared with a rope core with a single structure, the purpose of improving the tensile strength is achieved; an anti-counterfeiting identification band is arranged in one group of polymer industrial filaments and is twisted in the yarn count synchronously, which is beneficial to further improve the tensile strength on the one hand, and is convenient for consumers to easily identify the authenticity of the product on the other hand, and is beneficial to protecting the rights and interests of the enterprise itself; the polyester industrial filament has excellent properties such as high breaking strength, high elastic modulus, low elongation, good impact resistance, good dimensional stability, good toughness, and is beneficial to improving the tensile strength; it is beneficial to ensure product quality; it is ensured that the polymer industrial filament can fully contact with grease, and that the polymer industrial filament has a uniform oil content; by adjusting the gap of the oil filter roller, it is beneficial to control the oil content; the number of strands of the polymer industrial filament and the yarn count can be flexibly adjusted according to the actual production process requirements to meet the requirements of different scenarios and improve practicality; the lubricating grease can play a lubricating effect and reduce friction; the resin layer is beneficial to reducing the wear on the surface of the rope strands and extending the service life of the wire rope on the one hand, and is beneficial to ensuring the stability of the rope diameter on the other hand; the texture is strong, and the bending performance and toughness of the rope strands are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a process flow chart of the present invention; Figure 2 This is the process flow chart of oil impregnation of polymer industrial filaments; Figure 3 It is the steel wire rope structure made of this rope core.

[0019] In the figure: 1. Rope core, 2. Rope strands, 3. Resin layer, 4. Lubricating grease, 5. Center wire, 6. Steel wire. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] Unless otherwise specified, the relative arrangement of the components, numerical expressions and numerical values ​​described in these embodiments do not limit the scope of the present application. For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" are used in the embodiments to illustrate the relationship between an element or feature shown in the figure and another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be fixed "on" other elements or features. Therefore, the exemplary term "lower" can include both upper and lower orientations. The device can be fixed in other ways (rotated 90 degrees or located in other orientations), and the spatial relative description used here can be interpreted accordingly. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, process and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, process and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.It should be noted that similar reference numerals and letters denote similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0023] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0024] like Figure 1 In the embodiment described, a method for preparing a polymer rope core comprises the following steps: Step 1: Prepare polymer industrial filaments and conduct incoming material inspection; Step 2, soaking the polymer industrial filament in oil; Step 3: After the oil immersion is completed, several groups of polymer industrial filaments are prepared and twisted into a yarn count by left twisting respectively; an anti-counterfeiting mark band is arranged in one group of polymer industrial filaments and twisted into the yarn count synchronously; Step 4: Synchronously twist the twisted yarns into a rope core by left twisting.

[0025] The polymer industrial filament is polyester industrial filament.

[0026] like Figure 2 As shown, in step 2, the specific oil immersion operation steps are: Step a, preparing materials according to production requirements, and re-inspecting the polymer industrial filament to check its surface quality and flatness; Step b, installing the polymer industrial filament on the oil immersion device, and leading out the filament end in a clockwise direction; Step c, pulling the lead-out wire end through the ceramic buckle on the oil immersion device; Step d, sequentially performing oiling and oil filtering operations on the polymer industrial filaments; Step e, winding the polymer industrial filament onto a take-up reel for take-up.

[0027] In the above steps, the polymer industrial filaments are continuously oiled and filtered during the process of being taken up by the take-up reel, so as to ensure that the polymer industrial filaments have a uniform oil content.

[0028] In step d, when passing through oil, the oil temperature is set to 105±10°C according to the process requirements; then the oil pressure roller is lifted, and after the polymer industrial filament passes through the oil pressure roller, the oil pressure roller is lowered so that part of the polymer industrial filament is immersed in oil. Through the pressing of the oil pressure roller, the polymer industrial filament can always be immersed in grease when being pulled by the take-up reel, so as to ensure that the polymer industrial filament can fully contact with the grease. When filtering the oil, the polymer industrial filament is passed through the oil filter pressure roller, and the gap of the oil filter pressure roller is adjusted according to the process requirements, which is conducive to controlling the oil content.

[0029] During the twisting process of the rope core, the tension of the polymer industrial filament is 300~500N.

[0030] The number of strands of polymer industrial filament and yarn count can be flexibly adjusted according to the actual production process requirements to meet the needs of different scenarios and improve practicality. In step three, the yarn count is twisted from 3 strands of polymer industrial filament. In step four, the rope core is twisted from 3 strands of yarn count, and the twist pitch range is 3.8~4.2 times the rope core diameter.

[0031] like Figure 3 As shown, the present invention also provides a steel wire rope made of a polymer rope core, including a plurality of rope strands 2 and a resin layer 3, wherein the plurality of rope strands 2 are uniformly wound around the outer surface of the rope core 1 along the circumference of the rope core 1, and lubricating grease 4 is filled between the rope strands 2 and the rope core 1, and the rope strands 2, the rope core 1 and the lubricating grease 4 are all coated in the resin layer 3. The rope strands 2 include a central wire 5 and a plurality of steel wires 6, and the plurality of steel wires 6 are twisted in a spiral shape on the outer surface of the central wire 5. The plurality of rope strands 2 are twisted in a spiral shape on the outer surface of the rope core 1. The lubricating grease 4 can play a lubricating effect and reduce friction; the resin layer 3 is beneficial to reducing the wear on the surface of the rope strands 2 and extending the service life of the steel wire rope on the one hand, and is beneficial to ensuring the stability of the rope diameter on the other hand. The texture is strong, and the bending performance and toughness of the rope strands 2 are improved.

[0032] Polyester industrial filament is used as the polymer industrial filament; when preparing the rope core, the polymer industrial filament is first twisted into several strands of yarn, and then several strands of yarn are twisted into the rope core. Compared with the rope core with a single structure, it achieves the purpose of improving the tensile strength; at the same time, an anti-counterfeiting logo belt is arranged in one group of polymer industrial filaments, and is twisted in the yarn simultaneously, which is conducive to further improving the tensile strength on the one hand, and on the other hand, it is convenient for consumers to easily identify the authenticity of the product and is conducive to protecting the company's own rights and interests.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for preparing a polymer rope core, characterized in that: The following steps are involved: Step 1: Prepare polymer industrial filaments and conduct incoming material inspection; Step 2, soaking the polymer industrial filament in oil; Step 3: After the oil immersion is completed, several groups of polymer industrial filaments are prepared and twisted into a yarn count by left twisting respectively; an anti-counterfeiting mark band is arranged in one group of polymer industrial filaments and twisted into the yarn count synchronously; Step 4: The twisted yarns are simultaneously twisted into a rope core (1) by left twisting.

2. The method for preparing a polymer rope core according to claim 1, characterized in that: The polymer industrial filament is polyester industrial filament.

3. The method for preparing a polymer rope core according to claim 1, characterized in that In step 2, the specific oil immersion operation steps are: Step a, preparing materials according to production requirements, and re-inspecting the polymer industrial filament to check its surface quality and flatness; Step b, installing the polymer industrial filament on the oil immersion device, and leading out the filament end in a clockwise direction; Step c, pulling the lead-out wire end through the ceramic buckle on the oil immersion device; Step d, sequentially performing oiling and oil filtering operations on the polymer industrial filaments; Step e, winding the polymer industrial filament onto a take-up reel for take-up.

4. The method for preparing a polymer rope core according to claim 3, characterized in that: In step d, when passing through oil, the oil temperature is set to 105±10°C according to the process requirements; then the oil pressure roller is lifted, and the polymer industrial filament passes through the oil pressure roller, and then the oil pressure roller is lowered so that part of the polymer industrial filament is immersed in oil; when filtering the oil, the polymer industrial filament passes through the oil filter pressure roller, and the gap of the oil filter pressure roller is adjusted according to the process requirements.

5. The method for preparing a polymer rope core according to claim 1, characterized in that: During the twisting process of the rope core (1), the tension of the polymer industrial filament is 300~500N.

6. The method for preparing a polymer rope core according to claim 1, characterized in that: In step three, the yarn is twisted from three strands of polymer industrial filaments.

7. The method for preparing a polymer rope core according to claim 1, characterized in that: In step 4, the rope core (1) is twisted from three strands of yarn, and the twist pitch ranges from 3.8 to 4.2 times the diameter of the rope core (1).

8. A steel wire rope made of a polymer core according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7, characterized in that: The invention comprises a plurality of rope strands (2) and a resin layer (3), wherein the plurality of rope strands (2) are uniformly wound around the outer surface of the rope core (1) along the circumference of the rope core (1), lubricating grease (4) is filled between the rope strands (2) and the rope core (1), and the rope strands (2), the rope core (1) and the lubricating grease (4) are all coated in the resin layer (3).

9. The steel wire rope made of a polymer core according to claim 8, characterized in that: The rope strand (2) comprises a central wire (5) and a plurality of steel wires (6), wherein the plurality of steel wires (6) are twisted in a spiral shape around the outer surface of the central wire (5).

10. The steel wire rope made of a polymer core according to claim 8, characterized in that: A plurality of rope strands (2) are twisted in a spiral shape around the outer surface of the rope core (1).

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