Straight wire push-pull cable core

Abstract

The utility model relates to a straight wire push-pull cable core, which belongs to the field of push-pull cable cores and comprises a central steel wire, a first steel wire layer, a second steel wire layer and a third steel wire layer which are distributed from inside to outside. The first steel wire layer comprises a plurality of first steel wire ropes which are twisted on the peripheral wall of the central steel wire; the second steel wire layer comprises a plurality of rope strands which are twisted on the peripheral wall of the first steel wire layer; the number of the rope strands is equal to that of the first steel wire ropes; the specific number of the second steel wire ropes in a single rope strand is seven, and the single rope strand is of a 6 * 7-WSC structure; the thickness of the second steel wire layer is greater than that of the third steel wire layer; the thickness of the third steel wire layer is greater than that of the first steel wire layer; the three layers of steel wire ropes are arranged, and the rope strands are of 6 * 7-WSC structures, so that the strength and the stability are enhanced, and the flexibility is improved while the push-pull function of the cable core is ensured.

Description

Technical Field

[0001] The utility model relates to a straight wire push-pull cable core, belonging to the field of push-pull cable cores. Background Art

[0002] Push-pull cable cores are widely used in the fields of engineering machinery and automotive manufacturing. Their products are widely used in automobiles, ships, aviation, machinery, construction, mining, and other fields. With the continuous upgrading of market products, the market's performance requirements are becoming increasingly higher. Fatigue life and load efficiency are used as important performance indicators.

[0003] In the prior art, the structure of a push-pull cable core generally consists of a central wire and one or two outer layers of steel wire. For example, Chinese utility model patent No. CN219342682U discloses an armored push-pull cable core, which includes a central rope, the outer layer of which is wound with a flat steel strip, and the inner side wall of which is provided with multiple sharp corners. The central rope includes a first steel wire rope, a first outer wire, and a second outer wire. The first outer wire is provided on the outer layer of the first steel wire rope, and the second outer wire is provided on the outer layer of the first outer wire. The sharp corners fit into the gaps in the second outer wire. This armored push-pull cable core limits the central rope by fitting the sharp corners into the gaps in the central rope, achieving a tightly coupled state and improving the coupling force. However, in the prior art, while ensuring its push-pull function, its flexibility is insufficient, making it difficult to meet the actual needs of use.

[0004] Therefore, there is a need for a straight wire push-pull cable core that can improve its flexibility while ensuring the push-pull function of the cable core. Summary of the Invention

[0005] The technical problem to be solved by the utility model is: in order to overcome the deficiencies of the prior art, a straight wire push-pull cable core is provided which ensures the push-pull function of the cable core while improving its flexibility.

[0006] The technical solution adopted by the utility model to solve the above problems is: a straight wire push-pull cable core, comprising a central steel wire, a first steel wire layer, a second steel wire layer and a third steel wire layer, wherein the central steel wire, the first steel wire layer, the second steel wire layer and the third steel wire layer are arranged from the inside to the outside;

[0007] The first steel wire layer includes a plurality of first steel wire ropes, and the plurality of first steel wire ropes are twisted on the outer peripheral wall of the central steel wire;

[0008] The second steel wire layer includes a plurality of strands, and the plurality of strands are twisted on the outer peripheral wall of the first steel wire layer;

[0009] The number of the rope strands is equal to the number of the first steel rope;

[0010] The specific number of second steel wire ropes in a single strand is seven, and a single strand is a 6*7-WSC structure;

[0011] The thickness of the second steel wire layer is greater than that of the third steel wire layer, and the thickness of the third steel wire layer is greater than that of the first steel wire layer;

[0012] The diameter of the central steel wire is greater than twice the thickness of the first steel wire layer.

[0013] Preferably, the number of the first steel ropes is eight.

[0014] Preferably, the rope strands are formed by twisting a plurality of second steel wire ropes.

[0015] Preferably, the third steel wire layer includes a plurality of third steel wire ropes, and the plurality of third steel wire ropes are twisted on the outer peripheral wall of the second steel wire layer.

[0016] Preferably, the specific number of the third steel ropes is eighteen.

[0017] Preferably, a first plastic coating layer is provided between the first steel wire layer and the second steel wire layer.

[0018] Preferably, a second plastic coating layer is provided between the second steel wire layer and the third steel wire layer.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] The utility model discloses a straight wire push-pull cable core, which is provided with three layers of steel wire ropes, and the rope strands are of 6*7-WSC structure, thereby enhancing strength and stability, ensuring the push-pull function of the cable core while improving flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of a straight wire push-pull cable core of the utility model;

[0022] Figure 2 Schematic diagram of the structure of the first steel wire layer;

[0023] Figure 3 is a schematic diagram of the structure of the rope strand;

[0024] Figure 4 Schematic diagram of the structure of the third steel wire layer.

[0025] in:

[0026] Central steel wire 1, first steel wire layer 2, second steel wire layer 3, third steel wire layer 4, first plastic coating layer 5, second plastic coating layer 6;

[0027] First steel wire rope 21;

[0028] Rope strand 31;

[0029] The second steel wire rope 311;

[0030] The third steel wire rope 41. DETAILED DESCRIPTION

[0031] As Figure 1-4 shown in the embodiment, a straight wire push-pull cable core includes a center steel wire 1, a first steel wire layer 2, a second steel wire layer 3 and a third steel wire layer 4, which are distributed from inside to outside;

[0032] The first steel wire layer 2 includes a plurality of first steel wire ropes 21, which are twisted on the outer peripheral wall of the center steel wire 1, and the number of the first steel wire ropes 21 is eight;

[0033] The second steel wire layer 3 includes a plurality of strands 31, which are twisted on the outer peripheral wall of the first steel wire layer 2, and the number of the strands 31 is equal to that of the first steel wire ropes 21;

[0034] The strands 31 are twisted by a plurality of second steel wire ropes 311;

[0035] The specific number of the second steel wire ropes 311 in a single strand 31 is seven, and the single strand 31 is a 6*7-WSC structure, that is, among the seven second steel wire ropes 311, one serves as a core, and the remaining six are twisted outside the core, that is, 7 represents the total number of the second steel wire ropes 311 in a single strand 31, and 6 represents the number of the second steel wire ropes 311 twisted outside the core, through which the strength and stability can be enhanced, the push-pull function of the cable core is ensured, and at the same time, a certain flexibility can be maintained;

[0036] The third steel wire layer 4 includes a plurality of third steel wire ropes 41, which are twisted on the outer peripheral wall of the second steel wire layer 3, and the specific number of the third steel wire ropes 41 is eighteen;

[0037] The thickness of the second steel wire layer 3 is greater than that of the third steel wire layer 4, and the thickness of the third steel wire layer 4 is greater than that of the first steel wire layer 2, that is, the diameter of the strands 31 is greater than that of the third steel wire, and the diameter between the third steel wire ropes 41 is greater than that of the first steel wire rope 21;

[0038] The diameter of the center steel wire 1 is greater than twice the thickness of the first steel wire layer 2, that is, the diameter of the center steel wire 1 is greater than twice the diameter of the first steel wire rope 21;

[0039] The first plastic coating layer 5 is arranged between the first steel wire layer 2 and the second steel wire layer 3;

[0040] The second plastic coating layer 6 is arranged between the second steel wire layer 3 and the third steel wire layer 4.

[0041] In addition to the above embodiments, the present invention also includes other implementation methods. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of protection of the claims of the present invention.

Claims

1. A straight wire push-pull cable core, characterized by: It comprises a central steel wire (1), a first steel wire layer (2), a second steel wire layer (3) and a third steel wire layer (4), wherein the central steel wire (1), the first steel wire layer (2), the second steel wire layer (3) and the third steel wire layer (4) are distributed from the inside to the outside; The first steel wire layer (2) comprises a plurality of first steel wire ropes (21), wherein the plurality of first steel wire ropes (21) are twisted on the outer peripheral wall of the central steel wire (1); The second steel wire layer (3) comprises a plurality of rope strands (31), and the plurality of rope strands (31) are twisted on the outer peripheral wall of the first steel wire layer (2); The number of the rope strands (31) is equal to the number of the first steel wire rope (21); The specific number of the second steel wire ropes (311) in a single rope strand (31) is seven, and the single rope strand (31) is a 6*7-WSC structure; The thickness of the second steel wire layer (3) is greater than the thickness of the third steel wire layer (4), and the thickness of the third steel wire layer (4) is greater than the thickness of the first steel wire layer (2); The diameter of the central steel wire (1) is greater than twice the thickness of the first steel wire layer (2).

2. A straight wire push-pull cable core according to claim 1, characterized in that: The number of the first steel wire ropes (21) is eight.

3. The straight wire push-pull cable core according to claim 1, characterized in that: The rope strands (31) are formed by twisting a plurality of second steel wire ropes (311).

4. The straight wire push-pull cable core according to claim 1, characterized in that: The third steel wire layer (4) comprises a plurality of third steel wire ropes (41), and the plurality of third steel wire ropes (41) are twisted on the outer peripheral wall of the second steel wire layer (3).

5. The straight wire push-pull cable core according to claim 4, characterized in that: The specific number of the third steel wire ropes (41) is eighteen.

6. The straight wire push-pull cable core according to claim 1, characterized in that: A first plastic coating layer (5) is provided between the first steel wire layer (2) and the second steel wire layer (3).

7. The straight wire push-pull cable core according to claim 1, characterized in that: A second plastic coating layer (6) is provided between the second steel wire layer (3) and the third steel wire layer (4).

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