Novel wear-resistant cable

Abstract

The utility model discloses a novel wear-resistant cable, which relates to the technical field of cables, and comprises an outer sheath, an inner sheath and a cable core, a composite layer is arranged in the outer sheath, and the inner sheath is arranged in the composite layer. When the wear-resistant layer is bitten by rats, the difficulty of biting the wear-resistant layer by the rats can be increased due to the arrangement of the steel wires, so that the wear-resistant layer can be better protected, and the probability that the wear-resistant layer is bitten by the rats is reduced. By adopting the shape, when the cable is in contact with the ground, the tooth end of the gear ring is firstly in contact and friction with the ground, and the tooth end of the gear ring is the thickest position of the whole wear-resistant layer, so that the wear-resistant layer is more wear-resistant and longer in service life, the internal structure layer of the cable can be protected for a longer time, and the cable is more durable.

Description

Technical Field

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

[0002] Cable is a general term for items such as optical cables and electrical cables. Cables have many uses, mainly used for controlling installation, connecting equipment, transmitting electricity and other multiple functions. They are common and indispensable in daily life. In order to increase the service life of cables, the surface of existing cables is usually designed to be wear-resistant, generally by adding a wear-resistant layer or wear-resistant protrusions, such as a wear-resistant and anti-interference cable disclosed in patent announcement No. CN 215450933 U. However, the cable is easily bitten by rodents during use, especially when used in the wild or in the basement. The wear-resistant layer on the outermost layer of the cable is easily bitten by rodents and loses its function, making the wear resistance of the cable worse. Utility Model Content

[0003] The purpose of the utility model is to provide a new type of wear-resistant cable to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A novel wear-resistant cable comprises an outer sheath, an inner sheath and a wire core, wherein a composite layer is arranged inside the outer sheath, an inner sheath is arranged inside the composite layer, an elastic skeleton is arranged inside the inner sheath, a plurality of wire cores are arranged in the middle of the elastic skeleton, a wear-resistant layer is arranged outside the outer sheath, steel wires are evenly distributed in a ring shape inside the wear-resistant layer, the composite layer comprises an armor layer, a wrapping layer and a metal shielding layer, a wrapping layer is arranged inside the armor layer, and a metal shielding layer is arranged inside the wrapping layer.

[0006] As a further solution of the utility model: the elastic skeleton includes a central bone rod, an outer bone ring and a supporting bone rod, a plurality of supporting bone rods are evenly distributed around the central bone rod, and an outer bone ring is arranged outside the supporting bone rod.

[0007] As a further solution of the utility model: the outer sheath and the inner sheath are both low-smoke halogen-free polyethylene sheaths.

[0008] As a further solution of the utility model: a filling layer is arranged between the wire core and the elastic skeleton, and the filler of the filling layer is flame retardant particles.

[0009] As a further solution of the utility model: the wrapping layer is formed by directly wrapping the fire-resistant mica tape.

[0010] As a further solution of the utility model: the front side of the wear-resistant layer is in the shape of a gear ring.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model arranges steel wires evenly in a ring shape in the wear-resistant layer, and the steel wires surround the entire internal structure of the cable. When the wear-resistant layer is bitten by rats, the arrangement of the steel wires can increase the difficulty of the rats biting, thereby better protecting the wear-resistant layer and reducing the probability of the wear-resistant layer being bitten through by rats.

[0013] 2. The utility model sets a wear-resistant layer, which is made of silicone rubber with high wear resistance and is in the shape of a toothed ring as a whole. This shape allows the tooth end of the toothed ring to first contact and rub against the ground when the cable contacts the ground. Since the tooth end of the toothed ring is the thickest part of the entire wear-resistant layer, the wear-resistant layer is more wear-resistant and has a longer service life, thereby protecting the internal structural layer of the cable for a longer period of time, making the cable more durable.

[0014] 3. The utility model sets an elastic skeleton, which consists of three parts: a central bone rod, an outer bone ring and a supporting bone rod. When squeezed, it will produce elastic deformation to buffer the pressure and protect the internal wire core, and quickly restore the entire cable to its original state after the pressure disappears, so that the cable has better elasticity and improves the compression resistance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a cross-sectional view of a new type of wear-resistant cable.

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of a new type of wear-resistant cable.

[0017] Figure 3 A new type of wear-resistant cable Figure 1 A magnified view of the structure at center.

[0018] 1. Outer sheath; 2. Inner sheath; 3. Composite layer; 301. Armor layer; 302. Wrapping layer; 303. Metal shielding layer; 4. Elastic skeleton; 401. Center bone rod; 402. Outer bone ring; 403. Support bone rod; 5. Wire core; 6. Filling layer; 7. Wear-resistant layer; 8. Steel wire. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3In the embodiment of the utility model, a new type of wear-resistant cable includes an outer sheath 1, an inner sheath 2 and a core 5. A composite layer 3 is arranged inside the outer sheath 1, an inner sheath 2 is arranged inside the composite layer 3, an elastic skeleton 4 is arranged inside the inner sheath 2, and a plurality of cores 5 are arranged in the middle of the elastic skeleton 4. A wear-resistant layer 7 is arranged outside the outer sheath 1, and steel wires 8 are evenly distributed in a ring shape inside the wear-resistant layer 7. The steel wires 8 surround the entire internal structure of the cable. When the wear-resistant layer 7 is bitten by a rat, the setting of the steel wires 8 can increase the difficulty of the rat biting, thereby better protecting the wear-resistant layer 7 and reducing the probability of the wear-resistant layer 7 being bitten through by the rat. The composite layer 3 includes an armor layer 301, a sheath 302 and a metal shielding layer 303. The armor layer 301 can increase the mechanical strength of the cable and improve the anti-corrosion ability. A metal shielding layer 303 is arranged inside the sheath 302. The metal shielding layer 303 can shield external signals, so that the core 5 is protected from external electromagnetic interference, and the cable operation is more stable.

[0021] See also Figure 1 The elastic skeleton 4 includes a central bone rod 401, an outer bone ring 402 and a supporting bone rod 403. A plurality of supporting bone rods 403 are evenly distributed around the central bone rod 401. An outer bone ring 402 is arranged outside the supporting bone rod 403. The elastic skeleton 4 is formed by one-piece extrusion after the rubber is melted. When the elastic skeleton 4 is squeezed, it will produce elastic deformation to buffer the pressure and protect the internal wire core 5, and the entire cable will quickly return to its original state after the pressure disappears, so that the cable has better elasticity and improves the compression resistance of the cable.

[0022] See also Figure 1-2 The outer sheath 1 and the inner sheath 2 are both low-smoke halogen-free polyethylene sheaths, which can prevent the cable from emitting thick smoke after being burned, and reduce the pollution of the surrounding air caused by the burning of the cable.

[0023] See also Figure 1 and Figure 3 A wrapping layer 302 is provided in the armor layer 301. The wrapping layer 302 is formed by directly wrapping a fire-resistant mica tape. The setting of the wrapping layer 302 can improve the fire resistance of the cable. A filling layer 6 is provided between the core 5 and the elastic skeleton 4. The filler of the filling layer 6 is flame-retardant particles. The filling layer 6 is wrapped around the core 5, which can provide flame-retardant protection for the core 5 and further increase the probability of the core 5 catching fire.

[0024] See also Figure 1 The front of the wear-resistant layer 7 is in the shape of a toothed ring. With this shape, when the cable contacts the ground, the tooth end of the toothed ring of the wear-resistant layer 7 contacts and rubs against the ground first. Since the tooth end of the toothed ring is the thickest part of the entire wear-resistant layer 7, the wear-resistant layer 7 is more wear-resistant and has a longer service life, thereby protecting the internal structure layer of the cable for a longer time, making the cable more durable.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel wear-resistant cable, comprising an outer sheath (1), an inner sheath (2) and a core (5), characterized in that: A composite layer (3) is arranged inside the outer sheath (1), an inner sheath (2) is arranged inside the composite layer (3), an elastic skeleton (4) is arranged inside the inner sheath (2), a plurality of wire cores (5) are arranged in the middle of the elastic skeleton (4), a wear-resistant layer (7) is arranged outside the outer sheath (1), steel wires (8) are evenly distributed in an annular shape inside the wear-resistant layer (7), the composite layer (3) comprises an armor layer (301), a wrapping layer (302) and a metal shielding layer (303), the armor layer (301) is arranged inside the wrapping layer (302), and the metal shielding layer (303) is arranged inside the wrapping layer (302).

2. A new type of wear-resistant cable according to claim 1, characterized in that: The elastic skeleton (4) comprises a central bone rod (401), an outer bone ring (402) and a supporting bone rod (403); a plurality of supporting bone rods (403) are evenly distributed around the central bone rod (401); and an outer bone ring (402) is arranged outside the supporting bone rod (403).

3. A new type of wear-resistant cable according to claim 1, characterized in that: The outer sheath (1) and the inner sheath (2) are both low-smoke halogen-free polyethylene sheaths.

4. A new type of wear-resistant cable according to claim 1, characterized in that: A filling layer (6) is provided between the wire core (5) and the elastic skeleton (4), and the filler of the filling layer (6) is flame-retardant particles.

5. The novel wear-resistant cable according to claim 1 is characterized in that: The wrapping layer (302) is formed by directly wrapping the fire-resistant mica tape.

6. A new type of wear-resistant cable according to claim 1, characterized in that: The front side of the wear-resistant layer (7) is in the shape of a gear ring.

Images