A non-rotating steel wire rope and a method of manufacturing the same

Abstract

The application provides a rotation-preventing steel wire rope and a preparation method thereof. The rotation-preventing steel wire rope comprises a steel wire rope body and a rotation-preventing connector sleeved outside the steel wire rope body. The steel wire rope body can withstand a working environment with high strength, high load, large tension and rotation prevention of the steel wire rope. Meanwhile, the steel wire rope body can effectively prevent corrosion and abrasion, and prolong the service life of the steel wire rope. In addition, the rotation-preventing connector is provided, which adopts a structure design of a cam and a blade, and can effectively prevent the steel wire rope from rotating during use, and improve the safety performance. In addition, the clamping part adopts a structure design of a clamping rod and a clamping nut, and can firmly fix the rotation-preventing connector on the steel wire rope body, and improve the safety performance. Therefore, the steel wire rope has the advantages and benefits of high strength, corrosion resistance and rotation prevention. Meanwhile, the application also provides a preparation method of the rotation-preventing steel wire rope, so that the prepared steel wire rope has high hardness and strength, and can withstand large load and abrasion.

Description

Technical Field

[0001] This invention relates to the technical field of wire ropes, and in particular to an anti-rotation wire rope and its preparation method. Background Technology

[0002] Wire rope is a helical bundle of steel wires twisted together according to specific rules, meeting requirements for mechanical properties and geometric dimensions. It consists of steel wires, a core, and lubricant. Due to its high strength, light weight, stable operation, and resistance to sudden breakage, it is highly reliable and used in material handling machinery for lifting, traction, tensioning, and load-bearing. However, wire ropes require the rope to remain stationary during operation to function properly. If the wire rope rotates, it will affect work efficiency and the safety of life and property. Furthermore, rotation continuously reduces fatigue performance, affecting the service life of the wire rope. Therefore, the anti-rotation performance of the wire rope is a crucial factor in ensuring its normal use and influencing its service life. Summary of the Invention

[0003] In view of the above, the purpose of this invention is to provide a steel wire rope for preventing rotation and a method for preparing the same.

[0004] A rotation-resistant wire rope includes a wire rope body and a rotation-resistant connector sleeved on the outside of the wire rope body. The wire rope body comprises a composite center strand, three inner steel strands, three composite inner strands, twelve outer steel strands, six elastic rubber cores, multiple reinforcing wires, an oil-impregnated filler layer, and a protective layer. The three inner steel strands and three composite inner strands are alternately compacted and twisted around the outside of the composite center strand. The twelve outer steel strands are uniformly compacted and twisted around the outside of the inner steel strands and the composite inner strands. The protective layer covers the outside of the outer steel strands. The elastic rubber core is disposed in the gap between the composite center strand and the inner steel strands and the composite inner strands. The reinforcing wires are disposed between the inner steel strands, the composite inner strands, and the outer steel strands. The gaps between the outer steel strands and the protective layer, and the oil-filled layer filling the gaps between the inner steel strands, the composite inner strands, and the outer steel strands; the anti-rotation connector includes a connector body, a connector sleeve with an opening along its length, and a clamping part. The connector body includes a cam and a blade, the blade being disposed on one side of the cam, and a clamping space being formed between the cam and the blade; the connector sleeve mates with the connector body, the connector sleeve wrapping around the connector body, and one end of the connector sleeve having an inlet and an outlet; the clamping part includes a clamping rod and a clamping nut, the clamping rod being disposed on one side of the connector sleeve, the clamping nut being fixed on the clamping rod, and a receiving space being formed between the clamping rod and the clamping nut.

[0005] Preferably, the composite core strand is formed by twisting together multiple filaments formed by melt drawing and spinning polyamide fibers, polypropylene fibers, glass fibers, plasticizers, stearic acid, and antioxidants in a weight percentage ratio of 35:10:2:3:1:1.5. The combination of polyamide fibers, polypropylene fibers, and glass fibers in the above ratio gives it higher strength and wear resistance. The addition of plasticizers improves the processability and flexibility of the material, while the use of stearic acid and antioxidants enhances its durability. Furthermore, the twisting of the melt-drawn filaments makes the composite core strand more robust and has higher tensile strength, making it suitable for use in various environments.

[0006] Preferably, both the inner and outer steel strands comprise one central steel wire, ten fine steel wires, five medium-fine steel wires, and ten coarse steel wires. The five fine steel wires are twisted around the central steel wire, and the outer layer is alternately twisted with five medium-fine steel wires and five fine steel wires. The ten coarse steel wires are symmetrically twisted on the outermost layer. The large number of steel wires within the strands improves the overall flexibility of the wire rope; furthermore, the high filler density increases the metal area, correspondingly improving the breaking strength and resulting in superior overall performance of the wire rope.

[0007] Furthermore, the composite inner layer strand is formed by mixing and twisting the filaments and steel wires. This process, involving melting and drawing the filaments, results in a more robust bond between the steel wires and the filaments, increasing the overall load-bearing capacity and stability of the wire rope. Simultaneously, the composite inner layer strand structure provides sufficient softness, leading to a tighter twist and further enhancing the wire rope's anti-rotation performance.

[0008] Preferably, the composite center strand and the outer steel strand are left-hand twisted, and the inner steel strand and the composite inner strand are right-hand twisted, thereby enhancing the anti-rotation performance of the wire rope. Simultaneously, the protective layer comprises a flexible layer, a corrosion-resistant layer, and a wear-resistant layer arranged from the inside out. This gives the wire rope better resistance to compression, as well as better corrosion resistance and wear resistance. Preferably, the thickness of the wear-resistant layer can be selected as 1-2 mm to ensure the abrasion resistance of the wire rope, and the thickness of both the protective layer and the corrosion-resistant layer can be selected as 1-2 mm.

[0009] Preferably, the clamping space between the cam and the blade of the connector body is a rhomboid space, the inlet and outlet of the connector sleeve are located on both sides of the connector body, and the receiving space between the clamping rod and the clamping nut included in the clamping part is a circular receiving space. Because the clamping space between the cam and the blade of the connector body is a rhomboid space, the clamping force is more uniform, allowing for a more secure clamping of the wire rope body, thereby improving the stability and reliability of the connector body. The inlet and outlet of the connector sleeve are located on both sides of the connector body, facilitating easy installation and removal of the connector, reducing assembly time and cost. The circular receiving space between the clamping rod and the clamping nut included in the clamping part can accommodate the connector sleeve, expanding the connector's applicability. Furthermore, the use of both rhomboid and circular receiving spaces reduces friction and wear in the clamping parts, thereby improving the connector's accuracy and lifespan.

[0010] Preferably, the inner side of the connector sleeve is provided with a groove, and the cam is provided with a protrusion corresponding to the groove. When the connector sleeve and the connector body are engaged, the protrusion can be embedded in the groove to enhance the stability and anti-rotation performance of the anti-rotation connector. The inlet and outlet of the connector sleeve are respectively adopted with a beveled structure to facilitate the insertion and removal of the wire rope.

[0011] A method for preparing an anti-rotation steel wire rope, which is used to prepare the anti-rotation steel wire rope, the method for preparing the anti-rotation steel wire rope includes: Step 1: Preparation of the composite center strand wire: Select raw materials by weight: polyamide fiber, polypropylene fiber, glass fiber, plasticizer, stearic acid, and antioxidant in a weight percentage of 35:10:2:3:1:1.5; The above raw materials are crushed in a pulverizer, then ground in a grinder, and then mixed in a mixer to obtain a mixture. Then, a certain amount of plasticizer is added to the mixture, and it is dried and extruded by a twin-screw extruder to melt it into a molten spinning solution. Then, it is spun into filaments by a spinning assembly. The filaments are cooled, cured, and wound into composite core strands. Step 2: Core preparation: Select five filaments from step 1 and twist them together to form a coarse filament. Twist the seven coarse filaments together to form a preliminary core. Then, the preliminary core is repeatedly impregnated and coated with resin by an automatic impregnation machine, and the excess resin is extruded through an extrusion device to form the core. Step 3: Steel wire pickling: The carbon steel used in production is pickled separately. Wash and dry; Step 4: Wire drawing: The pickled steel wire is drawn more than 3 times to increase its hardness through continuous processing. Next, the wire is tempered, with two oil-quenching tempering processes. First, the wire undergoes corrective tempering, with the surface temperature strictly controlled at 160℃~180℃ and held for 15~20 minutes, then air-cooled. Then, a final tempering is performed at 450℃±20℃, held for 40~42 minutes, and then removed from the tempering furnace and cooled with water to obtain the finished rope-making steel wire; Step 5: Phosphating treatment: The drawn steel wire is phosphated to form a phosphate film on the surface, with the film weight controlled at 15~30g / m². Between step 2, after phosphating, the steel wire undergoes hydrogen removal passivation treatment to prevent hydrogen embrittlement; Step 6: Composite center strand twisting: On the twisting machine, the treated core wire is arranged through the wire distributor, pressed tightly through the closing end with a wire pressing die, and then wound onto the I-beam to obtain the required composite center strand. During the twisting process, the compression rate of the composite center strand is controlled at 10%, and the twist ratio is controlled at 8; Step 7: Composite inner layer strand twisting: On the twisting machine, the treated core wire and steel wire are arranged through the wire distributor, pressed tightly through the closing end with a wire pressing die, and then wound onto the I-beam to obtain the required composite inner layer strand twisting. During the twisting process, the compression rate of the composite inner layer strand is controlled at 8%, and the twist ratio is controlled at 8; Step 8: Twisting the inner and outer steel strands: The treated steel wires are arranged on a twisting machine via a splitter, oiled, and then pressed tightly at the closing end using a wire-pressing die. They are then wound onto an I-beam to obtain the required inner and outer steel strands. Simultaneously, a deformer effectively eliminates stress in the strands. During the twisting process, the compression rate of the inner steel strand is controlled at 10%, the twist ratio is controlled at 9, and the oiling method is strand-by-strand oiling. The compression rate of the outer steel strand is controlled at 11%, the twist ratio is controlled at 7, and the oiling method is strand-by-strand oiling. Step 9: Preparation of the elastic rubber core: EPDM rubber, crosslinking agent, antioxidant, plasticizer, and adhesive are mixed in a weight ratio of 100:3:11:5:0.The mixed rubber compound of step 3 is fed into the feed port of the extruder and extruded simultaneously. It is then melted into a molten rubber liquid, and then extruded and solidified to form a rubber core. The rubber core is cooled, cured, and rolled into an elastic rubber core. Step 10: Rope assembly: The twisted composite center strand, 3 steel inner layer strands, 3 composite inner layer strands, elastic rubber core, 12 steel outer layer strands, and reinforcing steel wires are arranged using a splitter, deformed by a pre-deformer, and guided to the same merging point. Oil is applied to the twisted strands, and an oil-containing filler layer is filled at the front end of the merging opening using a filling mold. The steel wire rope is then pressed tightly by a pressure die at the merging opening and stress is relieved by a deformer. At the same time, the compaction rate is controlled at 10%-12%, and the lay ratio of the steel wire rope is 7.2 to 8 times. Step 11: Protective layer preparation: A flexible layer is wrapped around the assembled steel wire rope. Before wrapping the flexible layer, the steel wire rope is... The process involves several steps: First, a heat treatment is performed beforehand. Then, a corrosion-resistant layer is applied outside the flexible layer. The wire rope is preheated before applying the corrosion-resistant layer. After the corrosion-resistant layer cools and hardens, a wear-resistant layer is applied to the outside of the corrosion-resistant layer to form the wire rope body. Second, the preparation of the anti-rotation connector involves using a mold to create the anti-rotation connector. Third, the assembly of the anti-rotation connector involves passing one end of the wire rope body through the inlet of the connector sleeve, then sliding the wire rope along the inner wall of the connector sleeve through the clamping space of the connector body. Next, the clamping rod and clamping nut of the clamping member are loosened, and the connector sleeve is placed into the receiving space. Then, the clamping nut is tightened to clamp the wire rope body. Finally, by rotating the connector sleeve, the cam and blade are driven to rotate relative to each other, thereby clamping the wire rope and preventing the wire rope body from rotating.

[0012] Preferably, in step ten, the deformation rate of each strand of the rope is controlled at 80% to 85%, and the deformation rate deviation is less than 10%.

[0013] Compared with existing technologies, the present invention has the following beneficial effects: The anti-rotation steel wire rope and its preparation method provided by the present invention include a steel wire rope body and an anti-rotation connector sleeved on the outside of the steel wire rope body; the steel wire rope body comprises a composite center strand, an inner steel strand, a composite inner strand, an outer steel strand, an elastic rubber core, and reinforcing steel wires, enabling the steel wire rope body to withstand high-strength, high-load, high-tension working environments and preventing the steel wire rope from rotating; simultaneously, the steel wire rope body is provided with an oil-impregnated filling layer and a protective layer, which can effectively prevent corrosion and wear, and extend the service life of the steel wire rope; furthermore, the anti-rotation connector, which adopts a cam and blade structure design, can effectively prevent the steel wire rope from rotating during use, improving safety performance; in addition, the clamping part adopts a clamping rod and clamping nut structure design, which can firmly fix the anti-rotation connector to the steel wire rope body, improving safety performance. Therefore, the anti-rotation steel wire rope has the advantages and benefits of high strength, corrosion resistance, anti-rotation, safety and reliability, and wide applicability. This invention also provides a method for preparing an anti-rotation steel wire rope, resulting in a wire rope with high hardness and strength, capable of withstanding large loads and wear. Furthermore, the multi-layer composite structure of the wire rope provides excellent durability and corrosion resistance. Phosphating and hydrogen removal passivation treatments form a phosphate film on the wire surface, effectively preventing hydrogen embrittlement and extending the rope's service life. The application of an elastic rubber core reduces vibration and impact, improving comfort and stability. The assembly of the anti-rotation connector effectively prevents rotation and knotting during use, enhancing safety and reliability. Therefore, this method produces a steel wire rope with improved service life and superior performance during use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the cross-sectional structure of the wire rope body described in this invention;

[0015] Figure 2 This is a structural flowchart of the method for preparing anti-rotation steel wire rope according to the present invention.

[0016] in:

[0017] 100 - Composite core strand, 200 - Steel inner layer strand, 300 - Composite inner layer strand, 400 - Steel outer layer strand, 500 - Elastic rubber core, 600 - Reinforcing steel wire, 700 - Oil-containing filler layer, 800 - Protective layer. Detailed Implementation

[0018] The embodiments described below are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] See Figure 1 This embodiment provides a rotation-resistant wire rope, which includes a wire rope body and a rotation-resistant connector sleeved on the outside of the wire rope body; the wire rope body includes a composite center strand 100, 3 inner steel strands 200, 3 composite inner strands 300, 12 outer steel strands 400, 6 elastic rubber cores 500, multiple reinforcing steel wires 600, an oil-impregnated filling layer 700, and a protective layer 800, the 3 inner steel strands 200 and the 3 composite inner strands 300, 12 outer steel strands 400, 6 elastic rubber cores 500, multiple reinforcing steel wires 600, an oil-impregnated filling layer 700, and a protective layer 800, the 3 inner steel strands 200 and the 3 outer composite inner strands 400, 12 outer steel strands 400, 6 elastic rubber cores 500, multiple reinforcing steel wires 600, an oil-impregnated filling layer 700, and a protective layer 800, the 3 inner steel strands 200 and the 3 outer composite inner strands 400, 12 outer steel strands 400, 6 outer elastic rubber cores 500, multiple reinforcing steel wires 600, an oil-impregnated filling layer 700, and a protective layer 800, the 3 inner steel strands 200 and the 3 outer composite inner strands 700, 12 outer steel ... The inner layer strands 300 are staggered, compacted, and twisted around the outside of the composite center strand 100. Twelve outer steel strands 400 are uniformly compacted and twisted around the outside of the steel inner layer strand 200 and the composite inner layer strand 300. The protective layer 800 covers the outside of the steel outer layer strands 400. The elastic rubber core 500 is disposed in the gap between the composite center strand 100 and the steel inner layer strands 200 and 300. The reinforcing steel wire 600 is disposed on the steel... The gaps between the inner layer strand 200, the composite inner layer strand 300, and the outer steel layer strand 400, and between the outer steel layer strand 400 and the protective layer 800, are filled by the oil-filled layer 700. The rotating connector includes a connector body, a connector sleeve with an opening along its length, and a clamping part. The connector body includes a cam and a blade, with the blade disposed on one side of the cam, forming a clamping space between the cam and the blade. The connector sleeve mates with the connector body, wrapping around it, and has an inlet and an outlet at one end. The clamping part includes a clamping rod and a clamping nut, with the clamping rod disposed on one side of the connector sleeve and the clamping nut fixed to the clamping rod, forming a receiving space between the clamping rod and the clamping nut.

[0020] Preferably, the composite center strand 100 is formed by twisting together multiple filaments formed by melt drawing and spinning polyamide fibers, polypropylene fibers, glass fibers, plasticizers, stearic acid, and antioxidants in a weight percentage ratio of 35:10:2:3:1:1.5. The combination of polyamide fibers, polypropylene fibers, and glass fibers in the above ratio gives it higher strength and wear resistance. The addition of plasticizers improves the processability and flexibility of the material, while the use of stearic acid and antioxidants enhances its durability. Furthermore, the twisting of the melt-drawn filaments makes the composite center strand 100 more robust and has higher tensile strength, making it suitable for use in various environments.

[0021] Preferably, both the inner steel strand 200 and the outer steel strand 400 include one central steel wire, ten fine steel wires, five medium-fine steel wires, and ten coarse steel wires. The five fine steel wires are twisted around the central steel wire, and the outer layer is staggered with five medium-fine steel wires and five fine steel wires. The ten coarse steel wires are symmetrically twisted on the outermost side. The large number of steel wires within the strands improves the overall flexibility of the wire rope; furthermore, the high filler density increases the metal area, correspondingly improving the breaking strength and resulting in superior overall performance of the wire rope.

[0022] Furthermore, the composite inner layer strand 300 is formed by mixing and twisting the filaments and steel wires. This is achieved through melting and drawing the filaments, which, due to their machinability and flexibility, result in a stronger bond between the steel wires and the filaments, increasing the overall load-bearing capacity and stability of the wire rope. Simultaneously, the structure of the composite inner layer strand 300 ensures sufficient softness, leading to a tighter twist in the wire rope and further enhancing its anti-rotation performance.

[0023] Preferably, the composite center strand 100 and the outer steel strand 400 are left-hand twisted, and the inner steel strand 200 and the composite inner strand 300 are right-hand twisted. This gives the wire rope excellent anti-rotation performance. Meanwhile, the protective layer 800 includes a flexible layer, a corrosion-resistant layer, and a wear-resistant layer arranged from the inside out. This gives the wire rope better resistance to compression, as well as better corrosion resistance and wear resistance. Preferably, the thickness of the wear-resistant layer can be selected as 1-2 mm to ensure the abrasion resistance of the wire rope, and the thickness of the protective layer 800 and the corrosion-resistant layer can be selected as 1-2 mm.

[0024] Preferably, the clamping space between the cam and the blade of the connector body is a rhomboid space, the inlet and outlet of the connector sleeve are located on both sides of the connector body, and the receiving space between the clamping rod and the clamping nut included in the clamping part is a circular receiving space. Because the clamping space between the cam and the blade of the connector body is a rhomboid space, the clamping force is more uniform, allowing for a more secure clamping of the wire rope body, thereby improving the stability and reliability of the connector body. The inlet and outlet of the connector sleeve are located on both sides of the connector body, facilitating easy installation and removal of the connector, reducing assembly time and cost. The circular receiving space between the clamping rod and the clamping nut included in the clamping part can accommodate the connector sleeve, expanding the connector's applicability. Furthermore, the use of both rhomboid and circular receiving spaces reduces friction and wear in the clamping parts, thereby improving the connector's accuracy and lifespan.

[0025] Preferably, the inner side of the connector sleeve is provided with a groove, and the cam is provided with a protrusion corresponding to the groove. When the connector sleeve and the connector body are engaged, the protrusion can be embedded in the groove to enhance the stability and anti-rotation performance of the anti-rotation connector. The inlet and outlet of the connector sleeve are respectively adopted with a beveled structure to facilitate the insertion and removal of the wire rope.

[0026] The anti-rotation wire rope provided by this invention includes a wire rope body and an anti-rotation connector sleeved on the outside of the wire rope body. The wire rope body comprises a composite center strand 100, inner steel strands 200, composite inner strands 300, outer steel strands 400, an elastic rubber core 500, and reinforcing steel wires 600, enabling the wire rope body to withstand high-strength, high-load, and high-tension working environments while preventing wire rope rotation. The reinforcing steel wires 600 not only improve the tensile strength of the wire rope but also fill the gaps between the strands, resulting in tighter compaction. To prevent relative displacement between strands, the anti-rotation performance of the wire rope is enhanced. Simultaneously, the wire rope body is equipped with an oil-impregnated filler layer 700 and a protective layer 800, effectively preventing corrosion and wear and extending the service life of the wire rope. Furthermore, an anti-rotation connector, employing a cam and blade structure design, effectively prevents the wire rope from rotating during use, improving safety. In addition, the clamping part uses a clamping rod and clamping nut structure design to firmly fix the anti-rotation connector to the wire rope body, improving safety. Therefore, this anti-rotation wire rope has advantages and benefits such as high strength, corrosion resistance, anti-rotation, safety and reliability, and wide applicability.

[0027] See Figure 2 This embodiment also provides a method for preparing an anti-rotation steel wire rope, which is used to prepare the above-mentioned anti-rotation steel wire rope. The method for preparing the anti-rotation steel wire rope includes:

[0028] Step 1: Preparation of the composite central strand 100 filament: Raw materials are selected by weight: polyamide fiber, polypropylene fiber, glass fiber, plasticizer, stearic acid, and antioxidant in a weight percentage ratio of 35:10:2:3:1:1.5. These raw materials are then pulverized in a pulverizer, ground in a grinder, and then mixed in a mixer to obtain a mixture. A certain amount of plasticizer is added to the mixture, and the mixture is dried and extruded through a twin-screw extruder to melt it into a molten spinning solution. This solution is then spun into filaments by a spinning assembly. The filaments are cooled, cured, and wound to form the composite central strand 100 filament. The preparation of this composite central strand 100 filament utilizes a combination of polyamide fiber, polypropylene fiber, glass fiber, and other materials, along with the use of plasticizers, stearic acid, antioxidants, and other additives in the above-mentioned proportions. This improves the material's load-bearing capacity, strength, toughness, wear resistance, and corrosion resistance. The preparation process employs a variety of equipment, including pulverizers, grinders, mixers, and twin-screw extruders, enabling automated production and improving production efficiency and quality. Furthermore, the use of composite materials allows for effective resource utilization and reduced production costs.

[0029] Step Two: Core Wire Preparation: Select five strands from Step One and twist them together to form a coarse filament. Combine these seven coarse filaments to form a preliminary core wire. Then, the preliminary core wire is repeatedly impregnated and coated with resin using an automatic impregnation machine. Excess resin is then extruded through an extrusion device to form the core wire. This repeated impregnation, resin coating, and excess resin extrusion process enhances the core wire's abrasion resistance, heat resistance, corrosion resistance, and mechanical strength, improving product lifespan and reliability. It also results in a smooth, uniform core wire surface, reducing defects and bubbles, thus improving product quality and performance.

[0030] Step 3: Pickling of steel wire: Pickling of carbon steel used in production, followed by drying;

[0031] Step 4: Wire Drawing: The pickled steel wire is drawn more than 3 times to increase its hardness through continuous processing. Next, the steel wire is tempered, with two oil quenching and tempering processes. The steel wire first undergoes corrective tempering, during which the surface temperature of the steel wire is strictly controlled at 160℃~180℃ and held for 15~20 minutes before being air-cooled. Then, it undergoes final tempering at a temperature of 450℃±20℃ for 40~42 minutes. After that, it is removed from the tempering furnace and cooled with water to obtain the finished rope-making steel wire.

[0032] Step 5: Phosphating Treatment: The drawn steel wire is phosphated to form a phosphate film on its surface. The weight of the phosphate film is controlled between 15 and 30 g / m². After phosphate treatment, the wire undergoes hydrogen embrittlement treatment to prevent hydrogen embrittlement. Through repeated drawing and tempering processes, the hardness and strength of the steel wire can be continuously increased. Tempering eliminates internal stress and defects, resulting in a smooth and uniform surface, reducing defects such as bubbles and cracks, and improving product quality. Phosphating and hydrogen embrittlement treatments form a phosphate film on the surface of the steel wire, preventing hydrogen embrittlement and improving the product's corrosion resistance and service life.

[0033] Step Six: Composite Center Strand 100 Twisting: The processed core wires are arranged on the twisting machine through the wire divider, pressed by the wire pressing die at the closing end, and then wound onto the I-beam wheel to obtain the required composite center strand 100. During the twisting process, the compression rate of the composite center strand 100 is controlled at 10%, and the twist pitch multiple is controlled at 8.

[0034] Step 7: Composite inner layer strand 300 twist: The treated core wire and steel wire are arranged on the twisting machine through the wire separating plate, pressed by the wire pressing steel die through the closing port, and then wound on the I-beam wheel to obtain the required composite inner layer strand 300 twist. During the twisting process, the compression rate of the composite inner layer strand 300 is controlled at 8%, and the twist multiple is controlled at 8.

[0035] Step 8: Twisting the inner steel strand 200 and outer steel strand 400: The treated steel wires are arranged on the twisting machine through the wire divider, oiled, and then pressed tightly by the wire pressing die at the closing end. They are then wound onto the I-beam roller to obtain the required inner steel strand 200 and outer steel strand 400. At the same time, the stress of the strands is effectively eliminated by the deformer. During the twisting process, the compression rate of the inner steel strand 200 is controlled at 10%, the twist ratio is controlled at 9, and the oiling method is strand oiling. The compression rate of the outer steel strand 400 is controlled at 11%, the twist ratio is controlled at 7, and the oiling method is strand oiling. It should be noted that the compression rate of the composite center strand 100 is controlled at 10%, and the lay length multiple is controlled at 8; the compression rate of the composite inner layer strand 300 is controlled at 8%, and the lay length multiple is controlled at 8; the compression rate of the steel inner layer strand 200 is controlled at 10%, and the lay length multiple is controlled at 9; and the compression rate of the steel outer layer strand 400 is controlled at 11%, and the lay length multiple is controlled at 7. The control of the compression rate and the setting of the lay length multiple make the wire rope more tightly bonded, and at the same time ensure that the wire rope has excellent anti-rotation performance.

[0036] Step Nine: Preparation of Elastic Rubber Core 500: A mixture of EPDM rubber, crosslinking agent, antioxidant, plasticizer, and adhesive in a weight ratio of 100:3:11:5:0.3 is fed into the feed port of an extruder and extruded simultaneously. The mixture is then melted into a molten rubber liquid, extruded again, and solidified to form a rubber core. The rubber core is then cooled, cured, and rolled into an elastic rubber core 500. The addition of crosslinking agent, antioxidant, plasticizer, and other materials in a weight ratio of 100:3:11:5:0.3 enhances the elasticity and durability of the rubber core, improves the product's service life and performance, reduces vibration and impact on the wire rope, improves the comfort and stability of the wire rope, and also makes the twist tighter, enhancing the anti-rotation performance between the wire ropes.

[0037] Step 10: Rope Assembly: Arrange the twisted composite center strand 100, 3-strand steel inner layer strand 200, 3-strand composite inner layer strand 300, elastic rubber core 500, 12-strand steel outer layer strand 400, and reinforcing steel wire 600 using a splitter. After deformation by a pre-deformer, guide them to the same assembly point and apply oil to the twisted strands. Fill the front end of the assembly opening with an oil-impregnated filler layer 700 using a filling mold. After passing through the assembly opening, press the wire rope with a pressure die and eliminate stress using a deformer. Simultaneously, control the compaction rate to 10%-12% and the wire rope lay ratio to 7.2 to 8 times. Controlling the compaction rate to 10%-12% and the wire rope lay ratio to 7.2 to 8 times ensures the excellent anti-rotation performance of the wire rope.

[0038] Step 11: Preparation of Protective Layer 800: A flexible layer is wrapped around the assembled steel wire rope. Before wrapping the flexible layer, the steel wire rope is preheated. Then, a corrosion-resistant layer is set outside the flexible layer. The steel wire rope is preheated before applying the corrosion-resistant layer. After the corrosion-resistant layer cools and hardens, a wear-resistant layer is wrapped around the corrosion-resistant layer to form the steel wire rope body. The good elasticity of the flexible layer can provide good buffering performance for the wear-resistant layer, greatly reducing the wear degree of the wear-resistant layer.

[0039] Step 12: Fabrication of the rotary resist connector: The rotary resist connector is fabricated using a mold;

[0040] Step 13: Assembly of the anti-rotation connector: Pass one end of the wire rope body through the inlet of the connector sleeve, then slide the wire rope along the inner wall of the connector sleeve, passing it through the clamping space of the connector body. Next, loosen the clamping rod and clamping nut of the clamping member, place the connector sleeve into the receiving space, and then tighten the clamping nut to clamp the wire rope body. Then, by rotating the connector sleeve, the cam and blade are driven to rotate relative to each other, thereby clamping the wire rope and preventing the wire rope body from rotating.

[0041] Preferably, in step ten, the deformation rate of each strand of the rope is controlled at 80% to 85%, and the deformation rate deviation is less than 10%.

[0042] Compared with existing technologies, this invention has the following beneficial effects: It also provides a method for preparing an anti-rotation steel wire rope, resulting in a steel wire rope with high hardness and strength, capable of withstanding large loads and wear. Furthermore, the use of a multi-layer composite structure in the steel wire rope provides excellent durability and corrosion resistance. Phosphating and dehydrogenation passivation treatments form a phosphate film on the steel wire surface, effectively preventing hydrogen embrittlement and improving the service life of the steel wire rope. The application of the elastic rubber core 500 reduces vibration and impact, improving comfort and stability. The assembly of the anti-rotation connector effectively prevents problems such as rotation and knotting during use, improving safety and reliability. Therefore, the steel wire rope produced by this method has an improved service life and exhibits excellent performance during use.

[0043] The above-disclosed embodiments are merely some preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A steel wire rope for preventing rotation, characterized in that: It includes a wire rope body and a rotary connector sleeved on the outside of the wire rope body. The wire rope body comprises a composite center strand, 3 inner steel strands, 3 composite inner strands, 12 outer steel strands, 6 elastic rubber cores, multiple reinforcing steel wires, an oil-filled layer, and a protective layer. The 3 inner steel strands and 3 composite inner strands are alternately compacted and twisted around the outside of the composite center strand. The 12 outer steel strands are uniformly compacted and twisted around the outside of the inner steel strands and composite inner strands. The protective layer covers the outside of the outer steel strands. The elastic rubber core is disposed in the gaps between the composite center strand and the inner steel strands. The reinforcing steel wires are disposed in the gaps between the inner steel strands, the composite inner strands, and the outer steel strands, as well as in the gaps between the outer steel strands and the protective layer. The oil-filled layer fills the gaps between the inner steel strands, the composite inner strands, and the outer steel strands. The rotary connector includes a connector body, a connector sleeve with an opening along its length, and a clamping part. The connector body includes a cam and a blade, with the blade disposed on one side of the cam, forming a clamping space between the cam and the blade. The connector sleeve mates with the connector body, wrapping around it, and has an inlet and an outlet at one end. The clamping part includes a clamping rod and a clamping nut, with the clamping rod disposed on one side of the connector sleeve and the clamping nut fixed to the clamping rod, forming a receiving space between the clamping rod and the clamping nut.

2. The anti-rotation steel wire rope as described in claim 1, characterized in that, The composite core strand is formed by twisting together multiple filaments formed by melt drawing of polyamide fiber, polypropylene fiber, glass fiber, plasticizer, stearic acid, and antioxidant in a weight percentage ratio of 35:10:2:3:1:1.

5.

3. The anti-rotation steel wire rope as described in claim 1, characterized in that, The inner steel strand and the outer steel strand each include 1 central steel wire, 10 fine steel wires, 5 medium-fine steel wires and 10 coarse steel wires; the 5 fine steel wires are twisted around the central steel wire, and the outer layer is staggered with 5 medium-fine steel wires and 5 fine steel wires, and the 10 coarse steel wires are symmetrically twisted around the outermost layer.

4. The anti-rotation steel wire rope as described in claim 2, characterized in that, The composite inner layer strand is formed by twisting the filaments and steel wires together.

5. The anti-rotation steel wire rope as described in claim 1, characterized in that, The composite center strand and the outer steel strand are twisted to the left, and the inner steel strand and the composite inner strand are twisted to the right.

6. The anti-rotation steel wire rope as described in claim 1, characterized in that, The clamping space between the cam and the blade of the connector body is a diamond-shaped space. The inlet and outlet of the connector sleeve are located on both sides of the connector body. The accommodating space between the clamping rod and the clamping nut included in the clamping part is a circular accommodating space.

7. The anti-rotation steel wire rope as described in claim 1, characterized in that, The connector sleeve has a groove on its inner side, and the cam has a protrusion corresponding to the groove.

8. The anti-rotation steel wire rope as described in claim 1, characterized in that, The connector sleeve has an inclined surface structure at both the inlet and outlet.

9. A method for preparing an anti-rotation steel wire rope, used to prepare the anti-rotation steel wire rope as described in claim 1, characterized in that, The method for preparing the anti-rotation steel wire rope includes: Step 1: Preparation of the composite central strand yarn: Raw materials are selected by weight: polyamide fiber, polypropylene fiber, glass fiber, plasticizer, stearic acid, and antioxidant in a weight percentage of 35:10:2:3:1:1.5; the above raw materials are placed in a pulverizer for pulverization, then ground in a grinder, and then mixed in a mixer to obtain a mixture. Then, a certain amount of plasticizer is added to the mixture, and it is dried and extruded by a twin-screw extruder to melt it into a molten spinning solution. Then, it is spun into filaments by a spinning assembly. The filaments are cooled, cured, and wound into composite central strand yarns by cooling and blowing. Step 2: Core wire preparation: Select 5 strands from Step 1 and twist them together to form a coarse wire. Combine the 7 twisted coarse wires to form a preliminary core wire. Then, the preliminary core wire is repeatedly impregnated and coated with resin by an automatic impregnation machine. Excess resin is squeezed out by an extrusion device to form the core wire. Step 3: Pickling of steel wire: Pickling of carbon steel used in production, followed by drying; Step 4: Wire Drawing: The pickled steel wire is drawn more than 3 times to increase its hardness through continuous processing. Next, the steel wire is tempered, with two oil quenching and tempering processes. The steel wire first undergoes corrective tempering, during which the surface temperature of the steel wire is strictly controlled at 160℃~180℃ and held for 15~20 minutes before being air-cooled. Then, it undergoes final tempering at a temperature of 450℃±20℃ for 40~42 minutes. After that, it is removed from the tempering furnace and cooled with water to obtain the finished rope-making steel wire. Step 5: Phosphating treatment: The drawn steel wire is subjected to phosphating treatment to form a phosphating film on the surface of the steel wire. The weight of the phosphating film is controlled between 15 and 30 g / m2. After phosphating, the steel wire is subjected to hydrogen removal passivation treatment to prevent hydrogen embrittlement. Step Six: Composite Center Strand Twisting: The processed core wires are arranged on the twisting machine through the wire divider, pressed tightly by the wire pressing die at the closing end, and then wound onto the I-beam wheel to obtain the required composite center strand. During the twisting process, the compression rate of the composite center strand is controlled at 10%, and the twist pitch multiple is controlled at 8. Step 7: Composite inner layer twisting: The treated core wire and steel wire are arranged on the twisting machine through the wire divider, pressed by the wire pressing die through the closing end, and then wound on the I-beam to obtain the required composite inner layer twisting. During the twisting process, the compression rate of the composite inner layer is controlled at 8%, and the twist multiple is controlled at 8. Step 8: Twisting the inner and outer steel strands: The treated steel wires are arranged on a twisting machine via a splitter, oiled, and then pressed tightly at the closing point using a wire-pressing die. They are then wound onto an I-beam to obtain the required inner and outer steel strands. Simultaneously, a deformer effectively eliminates stress in the strands. During the twisting process, the compression rate of the inner steel strands is controlled at 10%, the twist ratio is controlled at 9, and the oiling method is strand-by-strand oiling. The compression rate of the outer steel strands is controlled at 11%, the twist ratio is controlled at 7, and the oiling method is strand-by-strand oiling. Step 9: Preparation of elastic rubber core: Ethylene propylene diene monomer (EPDM) rubber, crosslinking agent, antioxidant, plasticizer and adhesive mixed in a weight ratio of 100:3:11:5:0.3 are fed into the feed port of an extruder and extruded simultaneously. The mixture is then melted into a molten rubber liquid, and then extruded and solidified to form a rubber core. The rubber core is cooled, cured and rolled into an elastic rubber core by cooling air blowing, cooling, curing and rolling. Step 10: Rope Assembly: Arrange the twisted composite center strand, 3 steel inner layer strands, 3 composite inner layer strands, elastic rubber core, 12 steel outer layer strands, and reinforcing steel wire using a splitter. After deformation by a pre-deformer, guide them to the same assembly point and apply oil to the twisted strands. Fill the front end of the assembly opening with an oil-containing filler layer using a filling mold. After passing through the assembly opening, press the wire rope with a pressing mold and eliminate stress using a deformer. At the same time, control the compaction rate to 10%-12%, and the lay ratio of the wire rope to be 7.2 to 8 times. Step 11: Preparation of protective layer: Wrap a flexible layer around the assembled steel wire rope. Before wrapping the flexible layer, preheat the steel wire rope. Then, set a corrosion-resistant layer on the outside of the flexible layer. Preheat the steel wire rope before applying the corrosion-resistant layer. After the corrosion-resistant layer cools and hardens, wrap a wear-resistant layer on the outside of the corrosion-resistant layer to form the steel wire rope body. Step 12: Fabrication of the rotary resist connector: The rotary resist connector is fabricated using a mold; Step 13: Assembly of the anti-rotation connector: Pass one end of the wire rope body through the inlet of the connector sleeve, then slide the wire rope along the inner wall of the connector sleeve, passing it through the clamping space of the connector body. Next, loosen the clamping rod and clamping nut of the clamping member, place the connector sleeve into the receiving space, and then tighten the clamping nut to clamp the wire rope body. Then, by rotating the connector sleeve, the cam and blade are driven to rotate relative to each other, thereby clamping the wire rope and preventing the wire rope body from rotating.

10. The method for preparing the anti-rotation steel wire rope as described in claim 9, characterized in that: Step 10 involves controlling the deformation rate of each strand of the rope to 80%–85%, with a deformation rate deviation of less than 10%.

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