Round twelve strand layed nonrotating wire rope

Abstract

The utility model relates to steel wire rope technical field discloses a kind of round twelve strands anti-twist steel wire rope, including outer layer strand rope, inner layer strand rope, center rubber protection pipe and oil-immersed protection structure, outer layer is eight strands back and forth interlaced strand rope, inner layer is four strands S-type strand rope that is wound in the outside of center rubber protection pipe, oil-immersed fibre isolation layer is equipped between inner and outer layers;Center rubber protection pipe is hollow elastic structure, and built-in oil-immersed sponge and pipe wall are perforated.The torsional stress of the present application is cancelled by the winding direction cooperation of inner and outer layers, solves the problem that ordinary steel wire rope is easy to twist, knot;Center protection pipe can position inner layer strand rope and realize dynamic oiling lubrication, combined with oil-immersed isolation layer, substantially reduce the friction and abrasion between strand rope.

Description

Technical Field

[0001] This utility model relates to the field of wire rope technology, specifically a circular twelve-strand anti-twist wire rope. Background Technology

[0002] In industrial operations and engineering applications such as lifting, hoisting, and traction, steel wire ropes are commonly used flexible load-bearing components, and their stability and safety directly affect operational efficiency and on-site safety.

[0003] Currently, conventional single-strand or multi-strand S-twist steel wire ropes are prone to torsional stress due to the single twist direction and insufficient structural symmetry during load-bearing operations. This can lead to rope entanglement and knotting, which not only reduces operational convenience and work efficiency but may also cause uneven stress due to rope twisting, increasing the risk of breakage and other safety hazards.

[0004] Meanwhile, traditional wire ropes lack effective isolation and lubrication protection structures between strands and wires. Under dynamic stress or long-term use, direct contact friction between wires accelerates wire wear, significantly shortens the service life of the wire rope, increases equipment maintenance and replacement costs, and also enhances potential risks during operation. Therefore, we propose a circular twelve-strand anti-torsion wire rope to address the problems mentioned above. Utility Model Content

[0005] This utility model provides a circular twelve-strand anti-twist steel wire rope, which solves the problems mentioned in the background art. Conventional S-twist steel wire ropes are prone to torsional stress under load due to the single twist direction of the strands, which leads to rope entanglement and knotting, reducing operating efficiency and increasing safety hazards. At the same time, traditional steel wire ropes lack effective lubrication and protection between strands, resulting in rapid friction and wear of the steel wires, short service life, and difficulty in meeting the needs of harsh working conditions.

[0006] This utility model provides the following technical solution: A circular twelve-strand anti-twist steel wire rope includes an outer layer of strands, an inner layer of strands, a central rubber protective tube, and an oil-immersed protective structure. The outer layer of strands, consisting of eight strands arranged in a staggered winding pattern, is located outside the inner layer of strands. The inner layer of strands, consisting of four strands, is wound around the outside of the central rubber protective tube in an S-shaped winding pattern. The central rubber protective tube is a hollow structure filled with oil-immersed sponge, and its wall has several small holes evenly distributed on it. The oil-immersed protective structure includes an oil-immersed isolation layer disposed between the outer and inner strands.

[0007] Preferably, the oil-impregnated isolation layer between the outer strand and the inner strand is an oil-impregnated fiber layer, which is used to isolate the outer strand and the inner strand and reduce interlayer friction and wear.

[0008] Preferably, the twist angle of the outer strand is 12° to 15°, and its winding direction matches the S-shaped winding direction of the inner strand to counteract the torsional stress of the wire rope under load.

[0009] Preferably, the elastic material of the central rubber protective tube is adapted to the winding and positioning requirements of the inner strands, and its tube diameter matches the diameter of the inner strands to ensure the winding fit of the inner strands.

[0010] Preferably, both the outer and inner strands are made of multiple steel wires twisted together, and the surface of each steel wire is galvanized to improve corrosion resistance.

[0011] Preferably, the outer surface of the outer strand is coated with a wear-resistant coating.

[0012] This utility model has the following beneficial effects: 1. The outer eight-strand rope adopts a back-and-forth interlacing winding method with a twist angle of 12° to 15°, while the inner four-strand rope adopts an S-shaped winding method. The two winding directions work together to effectively offset the torsional stress generated when the wire rope is under load. This structurally solves the problems of easy twisting, tangling, and knotting of ordinary S-twist wire ropes, improving the operational efficiency and safety of lifting and hoisting operations.

[0013] 2. An oil-impregnated fiber isolation layer is installed between the outer and inner strands to isolate direct contact between them. The lubricating oil reduces interlayer friction and wear. A hollow rubber protective tube is installed in the center of the inner strand. The oil-impregnated sponge inside the tube can seep out lubricating oil through small holes in the tube wall when the strand is under load and compression, providing dynamic lubrication to the strand. This achieves on-demand oil supply and avoids dry friction between the inner strands. The dual lubrication structure significantly reduces the wear rate between the steel wire and the strands, and significantly extends the service life of the wire rope. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the winding structure of the outer and inner strands of this utility model.

[0016] Figure 3 This is a schematic diagram of the winding structure of the central rubber protective tube and the inner strand of the present invention.

[0017] Figure 4 This is a schematic diagram of the outer strand winding structure of this utility model.

[0018] In the diagram: 1. Outer strand; 2. Inner strand; 3. Central rubber protective tube; 31. Sponge; 4. Oil-immersed protective structure; 41. Isolation layer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 and Figure 2 A circular twelve-strand anti-torsion steel wire rope includes an outer layer strand 1, an inner layer strand 2, a central rubber protective tube 3, and an oil-immersed protective structure 4. The outer layer strand 1 consists of eight strands, located outside the inner layer strand 2, and is arranged in a back-and-forth interlacing winding manner with a twist angle of 12° to 15°. The inner layer strand 2 consists of four strands, which are wound around the outside of the central rubber protective tube 3 in an S-shaped winding manner. The inner layer strand 2 uses the central rubber protective tube 3 as a positioning reference, and the S-shaped winding forms the inner layer structure. Its torsional trend is balanced with the reverse force rectangle of the outer layer's interlacing winding, which, together with the outer layer, achieves overall torsional stress cancellation and enhances anti-torsion performance. The outer surface of the outer layer strand 1 is coated with a wear-resistant coating.

[0021] Both the outer strand 1 and the inner strand 2 are made of multiple twisted steel wires, and the surface of each steel wire is galvanized to improve corrosion resistance. The steel wires are high-carbon steel (65Mn), the surface galvanized layer is hot-dip galvanized, and the wear-resistant coating is a polyurethane-based wear-resistant material. The interlacing winding allows the torsional tendencies of different strands to cancel each other out under load, and at the same time, it works in conjunction with the reverse torque of the inner S-shaped winding to weaken the overall torsional stress. The small to medium twist angle of 12° to 15° ensures that the strand structure is compact and avoids loosening. It solves the torsion and entanglement problems of ordinary S-twist steel wire ropes, improving work efficiency and safety. The galvanized layer improves corrosion resistance, and the wear-resistant coating reduces friction loss with external components and extends service life.

[0022] Please see Figure 1 , Figure 3 and Figure 4The central rubber protective tube 3 has a hollow structure, filled with oil-impregnated sponge 31. Several small holes are evenly distributed on the tube wall. The elastic material of the central rubber protective tube 3 is adapted to the winding and positioning requirements of the inner strands 2, and its diameter matches the diameter of the inner strands 2 to ensure the winding fit of the inner strands 2. The central rubber protective tube 3 is made of nitrile rubber, and the oil-impregnated sponge 31 is made of polyester sponge plus wear-resistant lubricating oil specifically for steel wire ropes. The elastic material provides a winding and positioning reference for the inner strands 2, ensuring fit. When the inner strands 2 are subjected to load and pressure on the central rubber protective tube 3, the lubricating oil in the oil-impregnated sponge 31 seeps out through the small holes, dynamically lubricating the inner strands 2. This improves the winding stability of the inner strands 2, preventing deviation and loosening; it achieves dynamic lubrication with oil output as needed, reducing friction and wear between the inner strands 2.

[0023] The oil-immersed protective structure 4 includes an oil-immersed isolation layer 41 disposed between the outer strand 1 and the inner strand 2; the oil-immersed isolation layer 41 between the outer strand 1 and the inner strand 2 is an oil-immersed fiber layer, used to isolate the outer strand 1 and the inner strand 2 and reduce interlayer friction and wear. The fibers of the oil-immersed isolation layer 41 are nylon synthetic fibers plus special lubricating oil for steel wire rope, which isolates the direct contact between the outer and inner strands 2, while the lubricating oil reduces interlayer friction. It should be noted that in this embodiment, when a regular S-twist steel wire rope is under tension, the S-shaped winding of a single strand will cause the wire rope to tend to twist in the S-twist direction (the strand has an elastic deformation force to restore straightness); however, in the structure of this application, the outer layer has a back-and-forth interlacing winding effect, and the eight outer strands are arranged in a back-and-forth interlacing manner (which can be understood as an alternating arrangement of some strands being Z-twist and some being S-twist). In this way, the twisting tendency of some strands under load is towards the Z direction, and the other part is towards the S direction. A set of reverse torques is first formed inside the outer layer, which cancels out the torsional stress of the outer layer itself. The inner and outer layers are wound in a coordinated manner. The inner layer has four strands wound in an S-shape, and its torsional tendency under load is towards the S direction. The outer layer is wound in an alternating manner, and its overall torsional tendency is weakly towards the Z direction (or the resultant force direction opposite to the S direction). The torsional tendencies of the inner and outer layers are opposite, and the torques cancel each other out, which ultimately greatly reduces the overall torsional stress of the entire wire rope, thereby avoiding tangling and knotting.

[0024] The outer layer's internal twist counteracts its own torsion, while the inner and outer layers' reverse twists further counteract the overall torsion, effectively achieving an anti-torsion effect through structural torque balance.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A circular twelve-strand anti-twist steel wire rope, comprising an outer layer of strands (1), an inner layer of strands (2), a central rubber protective tube (3), and an oil-immersed protective structure (4), characterized in that: The outer strand (1) is located outside the inner strand (2). The outer strand (1) consists of eight strands arranged in a back-and-forth interlacing manner. The inner strand (2) consists of four strands arranged in an S-shaped winding manner around the outside of the central rubber protective tube (3). The central rubber protective tube (3) is a hollow structure filled with oil-impregnated sponge (31). Several small holes are evenly opened on the tube wall of the central rubber protective tube (3). The oil-impregnated protective structure (4) includes an oil-impregnated isolation layer (41) located between the outer strand (1) and the inner strand (2).

2. The circular twelve-strand anti-twist steel wire rope according to claim 1, characterized in that: The oil-impregnated isolation layer (41) between the outer strand (1) and the inner strand (2) is an oil-impregnated fiber layer, which is used to isolate the outer strand (1) and the inner strand (2) and reduce interlayer friction and wear.

3. The circular twelve-strand anti-twist steel wire rope according to claim 1, characterized in that: The outer strand (1) has a back-and-forth interlacing twist angle of 12° to 15°, and its winding direction matches the S-shaped winding direction of the inner strand (2) to counteract the torsional stress of the wire rope under load.

4. A circular twelve-strand anti-twist steel wire rope according to claim 1, characterized in that: The elastic material of the central rubber protective tube (3) is adapted to the winding and positioning requirements of the inner strand (2), and its tube diameter matches the diameter of the inner strand (2) to ensure the winding fit of the inner strand (2).

5. A circular twelve-strand anti-twist steel wire rope according to claim 1, characterized in that: The outer strand (1) and the inner strand (2) are both made of multiple steel wires twisted together, and the surface of each steel wire is galvanized to improve corrosion resistance.

6. A circular twelve-strand anti-twist steel wire rope according to claim 1, characterized in that: The outer surface of the outer strand (1) is coated with a wear-resistant coating.

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