A multi-strand steel wire rope

Abstract

This invention discloses a multi-strand steel wire rope, relating to the field of steel wire ropes. The multi-strand steel wire rope includes a core and strands. The strands are disposed on the surface of the core, and each strand is formed by winding several steel wires. A barrier strip is fixedly installed on the surface of the core, and each barrier strip is positioned between two adjacent strands. A cavity is formed within each barrier strip, and several graphite strips are disposed inside the cavity. Several small openings are formed on the surface of the barrier strip. Several partitions are formed within the core arm of the rope, and each partition is filled with foam material. During use, the barrier strips prevent friction between the strands, and the expanded foam material covers sharp cut edges on the surface of the steel wire rope, preventing accidental scratches to workers. This facilitates operation and improves work efficiency.

Description

Technical Field

[0001] This invention relates to the field of wire rope, specifically to a multi-strand wire rope. Background Technology

[0002] Multi-strand wire rope is a rope made of multiple strands of steel wire twisted together. Each strand is composed of multiple layers of twisted steel wire. This structure gives multi-strand wire rope high flexibility and load-bearing capacity. Its structural feature is that multiple layers of steel wire are first twisted into strands, and then a certain number of strands are twisted into a spiral shape with the core as the center.

[0003] The invention patent with patent publication number CN 104018375 A discloses a wire rope, including a core, strands and a sheath. The outer surface of the core is covered with a polyurethane coating, and the outer surface of the strands is covered with a silicon carbide protective layer. The sheath compresses the core and strands located inside the sheath, and the coating and protective layers are in close contact, as are adjacent protective layers.

[0004] In the aforementioned invention patent, the lubrication effect inside the rope core is good, which increases the density between each strand, making the wire rope more compact. At the same time, it is wear-resistant, corrosion-resistant, and extends the service life of the wire rope. However, after the wire rope is cut by the cutting device, the sharp cut edge may cause workers to accidentally touch and get scratched during use. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a multi-strand steel wire rope, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-strand steel wire rope, comprising a core and strands, wherein the strands are disposed on the surface of the core, each strand being formed by winding several steel wires, a barrier strip is fixedly installed on the surface of the core, each barrier strip being disposed between two adjacent strands, a cavity is formed within the barrier strip, several graphite strips are disposed inside the cavity, several small openings are formed on the surface of the barrier strip, several partitions are formed within the core arm of the core, each partition being filled with foam material, wherein the barrier strips prevent the strands from rubbing against each other during the use of the steel wire rope.

[0007] Preferably, the steel wire rope has a specification of 7*7*37, and each of the rope core surfaces is provided with seven rope strands, each of the rope strands being formed by twisting and winding seven steel wires, resulting in high strength and good durability.

[0008] Preferably, the rope core is made of synthetic chemical fibers, specifically polyethylene or polypropylene, which has good tensile strength and high strength, allowing the wire rope to bend freely while ensuring structural rigidity.

[0009] Preferably, the barrier strip is made of the same material as the rope core, and each barrier strip is attached to the surface of two adjacent rope strands, with the barrier strip replacing the direct contact between the rope strands.

[0010] Preferably, the partition is a vacuum environment and is sealed, so that the foam material filled in the partition can be stored stably.

[0011] Preferably, the foaming material filling the partition is a polyurethane foaming agent, which will undergo a curing reaction with moisture after contact with air, and instantly foam and expand.

[0012] Preferably, each wire in the rope strand is of the same type to ensure the flatness of the wire rope surface and facilitate use.

[0013] Preferably, there is a certain gap between each graphite strip. When compressed, the graphite strips rub against each other, and the graphite dust on the surface falls off.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The multi-strand steel wire rope has several compartments in its core, each compartment is filled with foam material, and the compartments are sealed vacuum spaces. When a portion of the steel wire rope needs to be taken, the steel wire rope to be used is cut off with a cutting device. The broken core causes the internal compartments to break, allowing the foam material filled in the compartments to come into contact with the air and react with the moisture in the air to form a large amount of foam and expand. The expanded foam material covers the sharp cut edges on the surface of the steel wire rope, preventing workers from accidentally touching and scratching the surface. This makes it easier for workers to operate and improves work efficiency.

[0016] (2) The multi-strand steel wire rope has a barrier strip set between two adjacent strands. When the steel wire rope is bent, the strands come into contact and rub against each other, causing wear on the surface steel wires. At the same time, the barrier strip has good tensile strength and support, ensuring that the strands do not come into direct contact while also ensuring the structural strength of the steel wire rope.

[0017] (3) When the multi-strand steel wire rope is bent and folded, it will squeeze the graphite strip in the barrier strip. After being squeezed, the graphite strip will rub against each other, causing graphite dust to fall off the surface. The graphite dust falls onto the surface of the steel wire through the small openings on the surface of the barrier strip, which improves the lubrication of the steel wire surface, reduces the wear of the steel wire with other objects, and extends the service life.

[0018] (4) The graphite strands of the multi-strand steel wire rope fall onto the surface of the steel wire, which not only improves the lubrication, but also allows the high thermal conductivity of the graphite strands to dissipate the high temperature generated by the continuous bending of the steel wire surface, thus avoiding the high temperature from aggravating the metal fatigue of the steel wire and extending the service life of the steel wire. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the position and structure of the barrier strip and the rope core of the present invention;

[0021] Figure 3 This is a schematic diagram of the rope core structure of the present invention;

[0022] In the diagram: 1. Rope core; 2. Rope strand; 3. Steel wire; 4. Barrier strip; 5. Cavity; 6. Graphite strip; 7. Partition. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1-3 This invention provides a technical solution: a multi-strand steel wire rope, comprising a core 1 and strands 2, the strands 2 being disposed on the surface of the core 1, each strand 2 being formed by winding several steel wires 3, a barrier strip 4 being fixedly installed on the surface of the core 1, each barrier strip 4 being disposed between two adjacent strands 2, a cavity 5 being formed in the barrier strip 4, several graphite strips 6 being disposed inside the cavity 5, several small openings being formed on the surface of the barrier strip 4, several partitions 7 being formed in the core arm of the core 1, each partition 7 being filled with foam material, the barrier strip 4 preventing the strands 2 from rubbing against each other during the use of the steel wire rope.

[0025] The wire rope has a specification of 7*7*37. Each core 1 has seven strands 2 on its surface. Each strand 2 is made of seven steel wires 3 twisted and wound together, resulting in high strength and good durability.

[0026] The core 1 is made of synthetic chemical fibers, specifically polyethylene or polypropylene, which have good tensile strength and high strength, allowing the wire rope to bend freely while ensuring structural rigidity.

[0027] The barrier strip 4 is made of the same material as the rope core 1, and each barrier strip 4 is attached to the surface of two adjacent rope strands 2, replacing the direct contact between the rope strands 2.

[0028] The partition 7 is a vacuum environment and is sealed, which allows the foam material filled in the partition 7 to be stored stably.

[0029] The foaming material filled in the partition 7 is polyurethane foaming agent, which will react with moisture after contact with air and expand instantly.

[0030] Each wire 3 in strand 2 is of the same type, ensuring the flatness of the wire rope surface and making it easy to use.

[0031] There is a certain gap between each graphite strip 6. When compressed, the graphite strips 6 rub against each other, and the graphite dust on the surface falls off.

[0032] Each strand 2 of the wire rope is separated by a barrier strip 4. The barrier strip 4 is made of polyethylene or polypropylene, capable of withstanding significant tensile force and possessing good compressive strength. It provides excellent support to the surface of the wire rope, improving its structural strength. Simultaneously, the barrier strip 4 separates the strands 2, preventing repeated friction between them during bending and thus avoiding wear on the wire surface and extending the rope's service life. Furthermore, when the wire rope bends, it compresses the graphite strips 6 within the barrier strip 4. The graphite strips 6, after being compressed,... The mutual friction causes graphite dust to fall off the surface. The fallen graphite dust falls onto the surface of the steel wire 3 through the small openings on the surface of the barrier strip 4, improving the lubrication of the steel wire 3 surface and preventing wear caused by frequent friction between the steel wire 3 and other objects. At the same time, graphite dust has a high thermal conductivity. When it covers the surface of the steel wire 3, it can improve the thermal conductivity of the steel wire 3 surface, preventing the steel wire rope from being repeatedly bent during operation, which would prevent the surface of the steel wire 3 from not being able to dissipate heat effectively and aggravate the metal fatigue of the steel wire 3. It can also effectively dissipate the temperature generated on the surface of the steel wire 3 due to bending, and improve its service life.

[0033] Comparative Example

[0034] In existing multi-strand steel wire ropes, the strands may be directly in contact with each other. During the use of steel wire ropes, bending and folding are inevitable. When the steel wire rope is bent, the strands 2 deform and bend, and the strands 2 come into contact with each other, causing repeated friction between the steel wires 3 at the contact points. This causes wear on the surface of the steel wires 3, which may lead to surface damage and breakage of some steel wires 3, affecting the structural strength of the steel wire rope and making it unsafe to work. At the same time, when the steel wire is repeatedly bent, high temperatures are generated at the bending points. This change will alter the internal crystal structure of the steel wires 3, causing metal fatigue of the steel wires 3 and affecting their strength.

[0035] When not in use, the wire rope is typically stored wrapped in a dedicated binding device. When the wire rope is needed, a cutting device is used to cut a portion of the wire rope for use in the work environment. During the cutting process, the core 1 of the rope breaks, and the inner layer 7 of the core 1 core arm ruptures. This allows the polyurethane foam filling the inner layer 7 to come into contact with the outside air, reacting with the moisture in the air to form a large amount of foam that expands. The expanded foam material covers the cut edge on the surface of the wire rope, preventing the sharp cut edge from scratching the workers, facilitating operation, and improving work efficiency.

[0036] Comparative Example

[0037] In the existing technology, after the steel wire rope is cut by the cutting device, the cut surface is sharp and pointed. When the worker is about to pick up the cut steel wire rope for use, he may accidentally touch the sharp cut surface of the steel wire rope, resulting in hand cuts.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-strand steel wire rope, comprising a core (1) and strands (2), characterized in that: The rope strands (2) are arranged on the surface of the rope core (1). Each rope strand (2) is made of several steel wires (3) wound together. A barrier strip (4) is fixedly installed on the surface of the rope core (1). Each barrier strip (4) is arranged between two adjacent rope strands (2). A cavity (5) is opened in the barrier strip (4). Several graphite strips (6) are arranged inside the cavity (5). Several small openings are opened on the surface of the barrier strip (4). Several partitions (7) are opened in the core arm of the rope core (1). Each partition (7) is filled with foam material.

2. The multi-strand steel wire rope according to claim 1, characterized in that: The wire rope has a specification of 7*7*37, and each of the rope cores (1) has seven rope strands (2) on its surface. Each rope strand (2) is formed by twisting and winding seven steel wires (3).

3. The multi-strand steel wire rope according to claim 1, characterized in that: The rope core (1) is made of synthetic chemical fibers, specifically polyethylene or polypropylene.

4. The multi-strand steel wire rope according to claim 1, characterized in that: The barrier strip (4) is made of the same material as the rope core (1), and each barrier strip (4) is attached to the surface of the two adjacent rope strands (2).

5. A multi-strand steel wire rope according to claim 1, characterized in that: The partition (7) is a vacuum-sealed environment.

6. The multi-strand steel wire rope according to claim 1, characterized in that: The foaming material filled in the partition (7) is a polyurethane foaming agent.

7. A multi-strand steel wire rope according to claim 1, characterized in that: Each of the steel wires (3) in the rope strand (2) is of the same type.

8. A multi-strand steel wire rope according to claim 1, characterized in that: There is a certain gap between each of the graphite strips (6).

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