Wear-resistant flexible power cable

Abstract

The utility model provides a wear-resistant flexible power cable, which comprises a hollow outer protective layer and a plurality of leads arranged in the outer protective layer, the cross section of the outer protective layer is annular, and ribs are arranged on the outer surface of the outer protective layer and protrude out of the outer surface of the outer protective layer; the ribs are of a long-strip-shaped structure and extend from one end of the outer protection layer to the other opposite end of the outer protection layer in the length direction of the outer protection layer. According to the wear-resistant flexible power cable, the ribs are arranged on the outer surface of the outer protection layer, so that the structural strength of the flexible power cable can be improved, and the wear resistance of the flexible power cable can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable structures, in particular to a wear-resistant flexible power cable. Background Art

[0002] Flexible power cable is a commonly used cable, which is widely used in power transmission, data transmission, communication control and other scenarios. Currently commonly used flexible power cables generally include an outer protective layer (i.e., armor layer) and multiple core wires arranged in the outer protective layer, and the outer surface of the outer protective layer is a smooth structure. In some application scenarios (such as outdoor operations), flexible power cables need to be dragged frequently during use, which causes the outer protective layer to frequently rub against the ground, thereby causing wear of the outer protective layer. When the outer protective layer is worn to a certain extent, it will not only affect the appearance of the flexible power cable, but may also cause the outer protective layer to be worn through, exposing the internal core wires, making the flexible power cable unable to continue to be used, and shortening the service life of the flexible power cable. Utility Model Content

[0003] The utility model aims to provide a wear-resistant flexible power cable, which can improve not only the structural strength of the flexible power cable but also the wear resistance of the flexible power cable by arranging ribs on the outer surface of the outer protective layer.

[0004] The utility model provides a wear-resistant flexible power cable, comprising a hollow outer protective layer and a plurality of conductors arranged in the outer protective layer, wherein the cross-section of the outer protective layer is in the shape of a circular ring, and ribs are arranged on the outer surface of the outer protective layer, and the ribs protrude from the outer surface of the outer protective layer; the ribs are long strip structures, and along the length direction of the outer protective layer, the ribs extend from one end of the outer protective layer to the other end opposite to the outer protective layer.

[0005] In one achievable manner, there are multiple ribs, each of which is a straight bar structure; each rib extends along the length direction of the outer protective layer, and multiple ribs are arranged at intervals along the circumferential direction of the outer protective layer.

[0006] In a feasible manner, the distance between the roots of each two adjacent ribs is 1 / 20 to 1 / 5 of the outer diameter of the outer protective layer.

[0007] In one achievable manner, the number of the ribs is at least one, and the ribs are of a spiral structure; each of the ribs extends in a spiral shape along the length direction of the outer protective layer.

[0008] In a feasible manner, each of the ribs includes a plurality of spiral turns arranged in sequence and at intervals, and the distance between each two adjacent spiral turns is 1 mm to 1 cm.

[0009] In one achievable manner, the surface of the rib is an arc-shaped structure.

[0010] In one achievable manner, the cross-section of the rib is a semicircular structure.

[0011] In one achievable manner, the height of the rib protruding from the outer surface of the outer protective layer is 1 / 20 to 1 / 10 of the outer diameter of the outer protective layer, and the wall thickness of the outer protective layer is 1 / 15 to 1 / 5 of the outer diameter of the outer protective layer.

[0012] In one achievable manner, the wear-resistant flexible power cable further includes an insulating layer, wherein the insulating layer is wrapped around the outside of the plurality of the conductive wires, and the insulating layer is located between the conductive wires and the outer protective layer.

[0013] In one achievable manner, the wear-resistant flexible power cable further includes a metal braided layer, and the metal braided layer is arranged between the insulating layer and the outer protective layer.

[0014] The wear-resistant flexible power cable provided by the utility model has ribs arranged on the outer surface of the outer protective layer. On the one hand, the ribs can improve the structural strength of the outer protective layer and reduce the risk of the outer protective layer breaking when the flexible power cable is bent or folded; on the other hand, because the ribs protrude from the outer surface of the outer protective layer, when the flexible power cable is dragged, the ribs will contact and rub against the ground, so that the ribs are worn out first, avoiding the outer protective layer from directly rubbing against the ground, thereby improving the wear resistance and service life of the flexible power cable. Moreover, compared with the method of increasing the thickness of the outer protective layer, the ribs arranged on the outer surface of the outer protective layer have less impact on the weight and cost of the flexible power cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic cross-sectional view of a wear-resistant flexible power cable in an embodiment of the utility model.

[0016] Figure 2 for Figure 1 Schematic diagram of the structure of the Chinese and outer protective layers.

[0017] Figure 3 It is a schematic structural diagram of the outer protective layer in another embodiment of the utility model. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] The terms "first", "second", "third", "fourth" and the like (if any) in the description and claims of the present invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0020] The directional words such as up, down, left, right, front, back, top, bottom, etc. (if any) involved in the specification and claims of the utility model are defined by the positions of the structures in the drawings and the positions of the structures relative to each other, and are only for the clarity and convenience of expressing the technical solution. It should be understood that the use of directional words should not limit the scope of protection claimed by the utility model.

[0021] like Figure 1 and Figure 2 As shown, the wear-resistant flexible power cable provided by the embodiment of the utility model comprises a hollow outer protective layer 1 and a plurality of wires 4 (generally at least three) arranged in the outer protective layer 1, and the (cross) cross section of the outer protective layer 1 is in the shape of a circular ring. A rib 11 is provided on the outer surface of the outer protective layer 1, and the rib 11 protrudes from the outer surface of the outer protective layer 1. The rib 11 is a long strip structure, and along the length direction L of the outer protective layer 1 (that is, the length direction of the flexible power cable), the rib 11 extends from one end of the outer protective layer 1 to the other end opposite to the outer protective layer 1, so that the rib 11 can protect various positions of the outer protective layer 1.

[0022] The wear-resistant flexible power cable provided by the utility model is provided with ribs 11 on the outer surface of the outer protective layer 1. On the one hand, the ribs 11 can improve the structural strength of the outer protective layer 1 and reduce the risk of the outer protective layer 1 breaking when the flexible power cable is bent or folded; on the other hand, since the ribs 11 are protruding from the outer surface of the outer protective layer 1, when the flexible power cable is dragged, the ribs 11 will contact and rub against the ground, so that the ribs 11 are worn out first, avoiding the outer protective layer 1 from directly rubbing against the ground (that is, during use, the ribs 11 will rubbing against the ground; when the ribs 11 are completely worn out, the outer protective layer 1 will contact the ground, thereby delaying the friction loss of the outer protective layer 1), thereby improving the wear resistance and service life of the flexible power cable. Moreover, compared with the method of increasing the thickness of the outer protective layer 1, the ribs 11 provided on the outer surface of the outer protective layer 1 have less impact on the weight and cost of the flexible power cable (if the thickness of the outer protective layer 1 is directly increased, although the wear resistance of the flexible power cable can be enhanced, the weight and cost of the flexible power cable will be greatly increased).

[0023] like Figure 1 and Figure 2 As shown, as an embodiment, there are multiple ribs 11, and the ribs 11 are straight strip structures; each rib 11 extends along the length direction L of the outer protective layer 1, and multiple ribs 11 are arranged at intervals along the circumferential direction of the outer protective layer 1.

[0024] Specifically, a plurality of spaced-apart ribs 11 are provided on the outer surface of the outer protective layer 1, so that the ribs 11 can protect various positions of the outer protective layer 1; and since the ribs 11 extend along the length direction L of the outer protective layer 1, the extension direction of the ribs 11 is consistent with the direction in which the flexible power cable is dragged (during use, the flexible power cable is generally dragged along the length direction), thereby making the flexible power cable easier to drag and reducing the friction between the ribs 11 and the ground, thereby increasing the life of the ribs 11.

[0025] like Figure 1 and Figure 2 As shown, as an embodiment, a plurality of ribs 11 are evenly spaced and arranged along the circumferential direction of the outer protective layer 1 , that is, the distance L1 between the roots of every two adjacent ribs 11 is equal.

[0026] like Figure 1 and Figure 2 As shown, as an embodiment, the distance L1 between the roots of each two adjacent ribs 11 is 1 / 20 to 1 / 5 of the outer diameter D of the outer protective layer 1. For example, if the outer diameter D of the outer protective layer 1 is 20 mm, the distance L1 between the roots of each two adjacent ribs 11 is 1 mm to 4 mm.

[0027] like Figure 3 As shown, as another embodiment, the number of ribs 11 is at least one, and the ribs 11 are of a spiral structure (i.e., the ribs 11 are of a spiral strip structure); each rib 11 extends in a spiral shape along the length direction L of the outer protective layer 1. Each rib 11 includes a plurality of spiral turns 110 arranged in sequence (specifically, a plurality of spiral turns 110 are arranged in intervals along the length direction L of the outer protective layer 1), and the distance L2 between each two adjacent spiral turns 110 is 1 mm to 1 cm, preferably, L2 is 1 mm to 5 mm. In this embodiment, the number of ribs 11 is one, and the one rib 11 extends spirally from one end of the outer protective layer 1 to the other end opposite to the outer protective layer 1. In other embodiments, the number of ribs 11 may also be multiple, and the plurality of ribs 11 are arranged in an interval arrangement (i.e., forming a double helix, triple helix, etc. structure). The ribs 11 of this spiral structure can also provide good protection for the outer protective layer 1.

[0028] like Figure 1 and Figure 2As shown, as an embodiment, the surface of the rib 11 is an arc-shaped structure. This makes the surface of the rib 11 smoother, which can reduce the friction between the rib 11 and the ground when the flexible power cable is dragged, thereby reducing the wear of the rib 11; on the other hand, it can reduce the accumulation of dust on the surface of the rib 11, and make the rib 11 have a good touch (feel).

[0029] like Figure 1 and Figure 2 As shown, as an implementation mode, the (cross) section of the rib 11 is a semicircular structure. Of course, in other embodiments, the cross section of the rib 11 may also be other shapes.

[0030] like Figure 1 and Figure 2 As shown, as an embodiment, the height H of the rib 11 protruding from the outer surface of the outer protective layer 1 (that is, the maximum protruding thickness of the rib 11. When the cross-section of the rib 11 is a semicircular structure, H is also the radius of the rib 11) is 1 / 20 to 1 / 10 of the outer diameter D of the outer protective layer 1, preferably 1 / 15 to 1 / 10. The wall thickness T of the outer protective layer 1 is 1 / 15 to 1 / 5 of the outer diameter D of the outer protective layer 1, preferably 1 / 10 to 1 / 8. As a result, the outer protective layer 1 has good wear resistance, and the thickness of the outer protective layer 1 is not too thick, so as to reduce the weight of the flexible power cable and reduce the cost of the flexible power cable. At the same time, when the wall thickness T of the outer protective layer 1 is thin, the protruding height of the rib 11 can be set larger accordingly to improve the wear resistance and life of the outer protective layer 1.

[0031] like Figure 1 and Figure 2 As shown, as an implementation mode, the ribs 11 and the outer protective layer 1 are an integral structure, that is, the ribs 11 and the outer protective layer 1 are integrally formed.

[0032] like Figure 1 As shown, as an embodiment, the wear-resistant flexible power cable further includes an insulating layer 3, the (cross) cross section of the insulating layer 3 is a circular ring structure, the insulating layer 3 is wrapped around the outside of the plurality of wires 4, and the insulating layer 3 is located between the wires 4 and the outer protective layer 1. The insulating layer 3 can wrap and fix the plurality of wires 4 to prevent the positions of the plurality of wires 4 from shifting; at the same time, the insulating layer 3 can also improve the structural strength of the flexible power cable, and when the outer protective layer 1 is worn through, the insulating layer 3 can still provide insulation protection for the wires 4.

[0033] like Figure 1As shown, as an embodiment, the wear-resistant flexible power cable also includes a metal braided layer 2, the (cross) cross section of the metal braided layer 2 is a circular ring structure, and the metal braided layer 2 is arranged between the insulating layer 3 and the outer protective layer 1. The metal braided layer 2 can improve the structural strength and toughness of the flexible power cable, so that the flexible power cable can withstand multiple bending and folding without breaking, stretching, etc., and the metal braided layer 2 can also play a role in signal shielding. The metal braided layer 2 is a metal mesh woven from materials such as copper and tinned copper (that is, the metal braided layer 2 is a mesh structure woven from metal wires).

[0034] like Figure 1 As shown, as an embodiment, the wire 4 includes an insulating sheath 41 and a conductor 42 disposed in the insulating sheath 41. The number of the conductor 42 is one or more, and the conductor 42 can be copper wire, aluminum wire, etc. The cross section of the insulating sheath 41 is a circular ring structure.

[0035] As an implementation mode, the outer protective layer 1 is made of rubber material. The insulating layer 3 and the insulating outer skin 41 can be made of insulating materials such as polyurethane, polyester, polyesterimide, polyamideimide, etc.

[0036] The wear-resistant flexible power cable provided by the embodiment of the utility model has ribs 11 arranged on the outer surface of the outer protective layer 1. On the one hand, the ribs 11 can improve the structural strength of the outer protective layer 1 and reduce the risk of the outer protective layer 1 breaking when the flexible power cable is bent or folded; on the other hand, because the ribs 11 protrude from the outer surface of the outer protective layer 1, when the flexible power cable is dragged, the ribs 11 will contact and rub against the ground, so that the ribs 11 are worn out first, avoiding the outer protective layer 1 from directly rubbing against the ground, thereby improving the wear resistance and service life of the flexible power cable. Moreover, compared with the method of increasing the thickness of the outer protective layer 1, the ribs 11 arranged on the outer surface of the outer protective layer 1 have less impact on the weight and cost of the flexible power cable.

[0037] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A wear-resistant flexible power cable, comprising a hollow outer protective layer (1) and a plurality of wires (4) arranged in the outer protective layer (1), wherein the cross section of the outer protective layer (1) is annular, and characterized in that: The outer surface of the outer protective layer (1) is provided with ribs (11), and the ribs (11) protrude from the outer surface of the outer protective layer (1); the ribs (11) are long strip structures, and along the length direction (L) of the outer protective layer (1), the ribs (11) extend from one end of the outer protective layer (1) to the other end opposite to the outer protective layer (1).

2. The wear-resistant flexible power cable according to claim 1, characterized in that: The ribs (11) are multiple in number and are of a straight bar structure; each rib (11) extends along the length direction (L) of the outer protective layer (1), and the multiple ribs (11) are arranged in an interval arrangement along the circumferential direction of the outer protective layer (1).

3. The wear-resistant flexible power cable according to claim 2, characterized in that: The distance (L1) between the roots of each two adjacent ribs (11) is 1 / 20 to 1 / 5 of the outer diameter (D) of the outer protective layer (1).

4. The wear-resistant flexible power cable according to claim 1, characterized in that: The number of the ribs (11) is at least one, and the ribs (11) are of a spiral structure; each of the ribs (11) extends in a spiral shape along the length direction (L) of the outer protective layer (1).

5. The wear-resistant flexible power cable according to claim 4, characterized in that: Each of the ribs (11) comprises a plurality of spiral turns (110) arranged in sequence and at intervals, and the distance (L2) between any two adjacent spiral turns (110) is 1 mm to 1 cm.

6. The wear-resistant flexible power cable according to claim 1, characterized in that: The surface of the rib (11) is an arc-shaped structure.

7. The wear-resistant flexible power cable according to claim 6, characterized in that: The cross section of the rib (11) is a semicircular structure.

8. The wear-resistant flexible power cable according to claim 1, characterized in that: The height (H) of the rib (11) protruding from the outer surface of the outer protective layer (1) is 1 / 20 to 1 / 10 of the outer diameter (D) of the outer protective layer (1), and the wall thickness (T) of the outer protective layer (1) is 1 / 15 to 1 / 5 of the outer diameter (D) of the outer protective layer (1).

9. The wear-resistant flexible power cable according to any one of claims 1 to 8, characterized in that: The wear-resistant flexible power cable further comprises an insulating layer (3), wherein the insulating layer (3) is wrapped around the outside of the plurality of conductive wires (4), and the insulating layer (3) is located between the conductive wires (4) and the outer protective layer (1).

10. The wear-resistant flexible power cable according to claim 9, characterized in that: The wear-resistant flexible power cable further comprises a metal braided layer (2), wherein the metal braided layer (2) is arranged between the insulating layer (3) and the outer protective layer (1).

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