Galvanized steel wire rope

Abstract

The utility model discloses a galvanized steel wire rope and relates to the technical field of steel wire ropes. The steel wire rope comprises a rope core and a plurality of steel wire strands, the outer surface of the rope core is coated with a rubber sleeve, the steel wire strands are twisted and wound on the outer surface of the rubber sleeve, each steel wire strand comprises a center steel wire, the surface of each center steel wire is subjected to phosphating treatment, the outer surface of each center steel wire is coated with a high-temperature-resistant layer, the high-temperature-resistant layer is made of epoxy resin, and the high-temperature-resistant layer is made of epoxy resin. The outer surfaces of the steel wire strands are coated with inner plastic layers, outer plastic layers are arranged on the outer sides of the inner plastic layers, and the inner plastic layers and the outer plastic layers are made of polyethylene and polypropylene respectively. Through the arrangement of the rubber sleeve, the phosphating treatment layer, the high-temperature-resistant layer, the plastic inner layer and the plastic outer layer, the possibility that the zinc coating is damaged or influenced due to factors such as scraping, collision and a high-temperature environment in the transportation, installation and use processes of the galvanized steel wire rope can be reduced, the corrosion resistance is guaranteed, and therefore the galvanized steel wire rope has higher practicability.

Description

Technical Field

[0001] The present application relates to the technical field of steel wire ropes, and in particular to a galvanized steel wire rope. Background Art

[0002] A steel wire rope is a spiral bundle of steel wires twisted together according to certain rules with steel wires that meet the requirements of mechanical properties and geometric dimensions. The steel wire rope is composed of steel wires, a rope core and grease. It 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. Steel wire ropes can be classified according to their surface state into phosphate-coated steel wire ropes, galvanized steel wire ropes, plastic-coated steel wire ropes and smooth steel wire ropes. Among them, galvanized steel wire ropes are galvanized on the surface of the steel wire rope to form a galvanized layer on the surface of the steel wire rope to improve its corrosion resistance. During the transportation, installation and use of existing galvanized steel wire ropes, the galvanized layer may be damaged or affected by factors such as scratches, collisions and high temperature environments, thereby reducing the corrosion resistance. Therefore, a galvanized steel wire rope is proposed. Summary of the Invention

[0003] The purpose of this application is to solve the technical problem that the galvanized layer of the existing galvanized steel wire rope may be damaged or affected by factors such as scratches, collisions and high temperature environments during transportation, installation and use, thereby resulting in reduced corrosion resistance. This application provides a galvanized steel wire rope.

[0004] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0005] A galvanized steel wire rope comprises a rope core and multiple steel wire strands, the outer surface of the rope core is covered with a rubber sleeve, and the multiple steel wire strands are twisted around the outer surface of the rubber sleeve. The steel wire strands include a central steel wire, the surface of the central steel wire is phosphating-treated, the outer surface of the central steel wire is covered with a high-temperature resistant layer, the material of the high-temperature resistant layer is epoxy resin, the outer surfaces of the multiple steel wire strands are covered with a plastic inner layer, and a plastic outer layer is provided on the outer side of the plastic inner layer. The materials of the plastic inner layer and the plastic outer layer are polyethylene and polypropylene, respectively.

[0006] Furthermore, the inner surface of the rubber sleeve is configured with a plurality of grooves, and the outer surface of the rope core is configured with convex strips having the same number as the grooves and correspondingly plugged in one by one.

[0007] Furthermore, the number of the steel wire strands is seven, the central steel wire includes a first steel wire and nine second steel wires and nine third steel wires, the second steel wire is twisted around the outer surface of the first steel wire, and the third steel wire is twisted around the outer surface of the second steel wire.

[0008] Furthermore, the second steel wire and the third steel wire have the same twisting direction and are staggered and distributed in a one-to-one correspondence.

[0009] Furthermore, the second steel wire is twisted in the opposite direction to the steel wire strand.

[0010] Furthermore, the second steel wire and the third steel wire have the same lay length but different lay angles, and there is line contact between the second steel wire and the first steel wire, and between the third steel wire and the second steel wire.

[0011] Furthermore, an annular cavity is formed between the plastic outer layer and the plastic inner layer, and a plurality of buffer strips each having an arched shape are arranged in the annular cavity.

[0012] Furthermore, a filling cavity is formed between the buffer strip and the annular cavity, and the filling cavity is filled with buffer rubber.

[0013] The beneficial effects of the present application are as follows: Through the provision of a rubber sleeve, phosphating treatment, a high temperature resistant layer, a plastic inner layer and a plastic outer layer, the present application can reduce the possibility of the galvanized layer of the galvanized steel wire rope being damaged or affected by factors such as scratches, collisions and high temperature environments during transportation, installation and use, thereby ensuring anti-corrosion performance and making it more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the structure of this application;

[0015] Figure 2 It is a schematic diagram of the structure of this application;

[0016] Figure 3 This application Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This application Figure 2 Enlarged view of point B in the middle;

[0018] Figure 5 This application Figure 2 Enlarged view of point C in the middle.

[0019] Figure numerals: 1, rope core; 2, rubber sleeve; 3, high temperature resistant layer; 4, plastic inner layer; 5, plastic outer layer; 6, groove; 7, convex strip; 8, first steel wire; 9, second steel wire; 10, third steel wire; 11, annular cavity; 12, buffer strip; 13, buffer rubber. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, 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.

[0021] like Figure 1-Figure 5As shown, a galvanized steel wire rope proposed in one embodiment of the present application includes a rope core 1 and a plurality of steel wire strands. The outer surface of the rope core 1 is covered with a rubber sleeve 2. The plurality of steel wire strands are twisted around the outer surface of the rubber sleeve 2. The steel wire strands include a central steel wire. The surface of the central steel wire is galvanized. The galvanizing treatment can form a galvanized layer on the surface of the central steel wire. The galvanized layer can improve the corrosion resistance. By setting the rubber sleeve 2, the rope core 1 is prevented from directly contacting the central steel wire, which can reduce the possibility of the galvanized layer being damaged due to scratching. The surface of the central steel wire is phosphating treated. The phosphating treatment can be applied to the central steel wire. The surface of the central steel wire is formed with a phosphate film, which can improve the wear resistance and corrosion resistance of the central steel wire, and effectively inhibit the occurrence of fretting fatigue. The possibility of the galvanized layer being damaged by scratches can be reduced by setting the phosphating treatment. The outer surface of the central steel wire is covered with a high-temperature resistant layer 3, and the material of the high-temperature resistant layer 3 is epoxy resin. Epoxy resin is a high molecular polymer, which refers to a general term for a class of polymers containing two or more epoxy groups in the molecule. Epoxy resin is a linear or branched low molecular polymer with epoxy groups at both ends of the molecule and aromatic, alkyl, hydroxyl and ether bonds on the main chain of the molecule. Oxygen and hydroxyl groups can reflect functional groups and provide good connectivity, ether bonds can provide good chemical resistance, aromatic groups can provide good high temperature resistance and rigidity, and methyl groups can provide good flexibility. By setting the high temperature resistant layer 3, the possibility of the galvanized layer being affected by the high temperature environment can be reduced. The outer surface of the multiple steel wire strands is covered with a plastic inner layer 4, and a plastic outer layer 5 is provided on the outer side of the plastic inner layer 4. The materials of the plastic inner layer 4 and the plastic outer layer 5 are polyethylene and polypropylene respectively. Polyethylene is a type of thermoplastic resin obtained by polymerization of ethylene. Polyethylene is divided into high-density polyethylene, low-density polyethylene and linear low-density polyethylene according to the polymerization method, molecular weight and chain structure. In this embodiment, the material of the plastic inner layer 4 is high-density polyethylene, which is commonly known as low-pressure polyethylene. It has the advantages of good electrical insulation, good impact resistance and good cold resistance. Polypropylene is a semi-crystalline thermoplastic plastic with high impact resistance, strong mechanical properties, and resistance to various organic solvents and acid and alkali corrosion. By setting the plastic inner layer 4 and the plastic outer layer 5, the possibility of the galvanized layer being damaged by collision can be reduced.

[0022] In summary, the present application avoids direct contact between the rope core 1 and the central steel wire through the provision of the rubber sleeve 2, thereby reducing the possibility of the galvanized layer being damaged by scratches. The provision of the phosphating treatment can reduce the possibility of the galvanized layer being damaged by scratches. The provision of the high-temperature resistant layer 3 can reduce the possibility of the galvanized layer being affected by the high-temperature environment. The provision of the plastic inner layer 4 and the plastic outer layer 5 can reduce the possibility of the galvanized layer being damaged by collisions, thereby reducing the possibility of the galvanized layer of the galvanized steel wire rope being damaged or affected by factors such as scratches, collisions and high-temperature environments during transportation, installation and use, thereby ensuring corrosion resistance and making it more practical.

[0023] like Figure 3 As shown, in some embodiments, the inner surface of the rubber sleeve 2 is configured with a plurality of grooves 6, the plurality of grooves 6 are distributed in a circular array, and the grooves 6 are distributed along the length direction of the rubber sleeve 2, and the outer surface of the rope core 1 is configured with ridges 7 having the same number as the grooves 6 and corresponding to each other in a one-to-one manner;

[0024] As mentioned above, the cooperation between the ridges 7 and the grooves 6 can not only increase the contact area between the rubber sleeve 2 and the rope core 1 and improve the strength, but also avoid relative displacement between the rubber sleeve 2 and the rope core 1 and improve stability.

[0025] like Figure 4 As shown, in some embodiments, the number of steel wire strands is seven, the central steel wire includes a first steel wire 8 and nine second steel wires 9 and nine third steel wires 10, the nine second steel wires 9 are distributed in a circular array, the nine third steel wires 10 are distributed in a circular array, the second steel wires 9 are twisted around the outer surface of the first steel wire 8, and the third steel wires 10 are twisted around the outer surface of the second steel wire 9;

[0026] Referring to the above, since the number of steel wire strands is seven, the central steel wire includes the first steel wire 8, the second steel wire 9 and the third steel wire 10, the total number of which is nineteen. Therefore, the entire galvanized steel wire rope will form a 7x19 structure. Under the same diameter, the steel wire diameter is smaller and more resistant to torsion and bending, thereby improving the flexibility of the galvanized steel wire rope and meeting certain applications with high flexibility requirements.

[0027] like Figure 4 As shown, in some embodiments, the second steel wire 9 and the third steel wire 10 have the same twisting direction and are staggered in a one-to-one correspondence; this design can improve the tightness between the second steel wire 9 and the third steel wire 10, thereby improving the overall strength.

[0028] like Figure 4 As shown, in some embodiments, the twisting direction of the second steel wire 9 is opposite to that of the steel wire strands; in this embodiment, the twisting direction of the second steel wire 9 is left twist, and the twisting direction of the steel wire strands is right twist. The design of opposite twisting directions can avoid looseness and further improve the tightness and overall strength.

[0029] like Figure 4 As shown, in some embodiments, the second steel wire 9 and the third steel wire 10 have the same lay length and different lay angles, the second steel wire 9 and the third steel wire 10 contact each other on a spiral line, and the second steel wire 9 and the first steel wire 8, as well as the third steel wire 10 and the second steel wire 9 are in line contact; under the same usage conditions, the overall service life can be improved by setting the line contact.

[0030] like Figure 5As shown, in some embodiments, an annular cavity 11 is formed between the plastic outer layer 5 and the plastic inner layer 4. A plurality of buffer strips 12 each having an arched shape are disposed in the annular cavity 11. The buffer strips 12 are distributed along the length direction of the annular cavity 11.

[0031] Referring to the above, when the galvanized steel wire rope is hit by a collision, the impact force of the collision is buffered and supported by multiple buffer strips 12, thereby further reducing the possibility of damage to the galvanized layer due to the collision. The arch has good mechanical properties. When the arch is subjected to external pressure, it will transfer the external pressure to the adjacent parts to resist the arch foot. The force dissipated can withstand greater pressure, so the arch can withstand greater impact force.

[0032] like Figure 5 As shown, in some embodiments, a filling cavity is formed between the buffer strip 12 and the annular cavity 11, and the filling cavity is filled with a buffer rubber 13; by setting the buffer rubber 13, the impact force can be further buffered, thereby further reducing the possibility of the galvanized layer being damaged due to collision.

[0033] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A galvanized steel wire rope comprising a rope core (1) and a plurality of steel wire strands, characterized in that: The outer surface of the rope core (1) is covered with a rubber sleeve (2), and a plurality of steel wire strands are twisted around the outer surface of the rubber sleeve (2). The steel wire strands include a central steel wire, and the outer surface of the central steel wire is covered with a high-temperature resistant layer (3). The material of the high-temperature resistant layer (3) is epoxy resin. The outer surfaces of the plurality of steel wire strands are covered with a plastic inner layer (4). A plastic outer layer (5) is provided on the outer side of the plastic inner layer (4). The materials of the plastic inner layer (4) and the plastic outer layer (5) are polyethylene and polypropylene, respectively.

2. The galvanized steel wire rope according to claim 1, characterized in that: The inner surface of the rubber sleeve (2) is configured with a plurality of grooves (6), and the outer surface of the rope core (1) is configured with convex strips (7) having the same number as the grooves (6) and correspondingly plugged in one by one.

3. The galvanized steel wire rope according to claim 1, characterized in that: The number of the steel wire strands is seven, and the central steel wire comprises a first steel wire (8) and nine second steel wires (9) and nine third steel wires (10). The second steel wire (9) is twisted around the outer surface of the first steel wire (8), and the third steel wire (10) is twisted around the outer surface of the second steel wire (9).

4. The galvanized steel wire rope according to claim 3, characterized in that: The second steel wire (9) and the third steel wire (10) have the same twisting direction and are staggered and distributed in a one-to-one correspondence.

5. The galvanized steel wire rope according to claim 4, characterized in that: The second steel wire (9) is twisted in the opposite direction to the steel wire strand.

6. The galvanized steel wire rope according to claim 3, characterized in that: The second steel wire (9) and the third steel wire (10) have the same lay length and different lay angles, and the second steel wire (9) and the first steel wire (8), as well as the third steel wire (10) and the second steel wire (9) are in line contact.

7. The galvanized steel wire rope according to claim 1, characterized in that: An annular cavity (11) is formed between the plastic outer layer (5) and the plastic inner layer (4), and a plurality of buffer strips (12) each having an arched structure are arranged in the annular cavity (11).

8. The galvanized steel wire rope according to claim 7, characterized in that: A filling cavity is formed between the buffer strip (12) and the annular cavity (11), and the filling cavity is filled with buffer rubber (13).

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