High-strength compression-resistant cable

Abstract

The utility model discloses a high-strength compression-resistant cable, which belongs to the technical field of cables and comprises a cable core unit, a filling layer is arranged outside the cable core unit, an aramid yarn braid layer is arranged outside the filling layer, an inner sheath is extruded outside the aramid yarn braid layer, a wrapping tape is wrapped outside the inner sheath, an inner lining layer is arranged outside the wrapping tape, and an outer lining layer is arranged outside the inner lining layer. An inner sheath is arranged outside the inner sheath, an armor layer is arranged outside the inner lining layer, an outer sheath is arranged outside the armor layer, the outer surface of the inner sheath is a concave-convex surface with wave crests and wave troughs, a wrapping tape is tightly wound on the wave crests of the inner sheath, and a buffer cavity is formed between the wrapping tape and the inner sheath. According to the high-strength compression-resistant cable, the wrapping tape is wrapped outside the inner sheath, so that a buffer cavity can be naturally formed between the inner sheath and the wrapping tape, the compression-resistant effect of the cable can be realized without installing a complex structure such as a spring in the cable, and the high-strength compression-resistant cable is easy and convenient to use and convenient to implement.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field, especially, relate to a kind of high-strength compression cable. BACKGROUND

[0002] Compression cable is a kind of special cable, it has good resistance to external pressure characteristics, can protect cable from external pressure damage while also providing reliable power transmission, therefore, it has wide application in industry and construction field.

[0003] The compression capacity of compression cable is mainly related to two aspects, one is the selection of compression cable material, for example, select high-strength polymer material or steel belt, etc., these materials have excellent physical properties, can effectively resist external pressure, thereby increasing the compression capacity of cable, the other is the optimization of compression cable structure design, for example, set reinforcing layer in the outermost layer of cable to increase the strength and rigidity of cable, or use buffer cavity and buffer element structure in the cable to enhance the compression performance of cable.

[0004] In the prior art, there are many patent application files related to the structural improvement of compression cable, for example, the Chinese utility model patent document with publication number CN218918487U discloses a pressure-resistant charging pile cable, which comprises cable core, buffer strip, insulation layer, elastic layer and outer protective layer, the cable core is arranged inside the insulation layer, the buffer strip is arranged between two adjacent cable cores, the buffer strip is provided with a buffer cavity along the axial direction, and the elastic layer is arranged between the insulation layer and the outer protective layer. When the cable is extruded by external objects, the elastic layer can greatly relieve the extrusion force and greatly reduce the influence of the extrusion force on the cable. When the extrusion force of external objects is too large and exceeds the elastic limit of the elastic layer, the buffer cavity of the buffer strip can play a second layer of buffer compression effect, reducing the mutual extrusion between adjacent cable cores. Although the structure can play a certain buffer compression effect, it is actually difficult to process the multiple wave-shaped annular elastic pieces in the elastic layer inside the cable in actual production process, and the implementability is not strong, which is not convenient for processing. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is that in the prior art, compression cable processing is difficult, and the implementability is not strong, based on this, the utility model provides a high-strength compression cable convenient to implement.

[0006] The utility model discloses a technical scheme that solves its technical problem is adopted: a kind of high-strength compression-resistant cable, including cable core unit, the outside of cable core unit is provided with filling layer, the outside of filling layer is provided with aramid silk braiding layer, the outside of aramid silk braiding layer is extruded and covered with inner sheath, the outside of inner sheath is wrapped with wrapping tape, the outside of wrapping tape is provided with inner liner, the outside of inner liner is provided with armour layer, the outside of armour layer is provided with outer sheath, the outer surface of inner sheath is the concave-convex surface with wave crest and wave trough, wrapping tape is tightly wound on the wave crest of inner sheath, and buffer cavity is formed between wrapping tape and inner sheath.

[0007] Further, the cable core unit includes a conductor and an insulation layer, and the filling layer is arranged outside the insulation layer.

[0008] Further, the cable core unit has four, and the high-strength compression-resistant cable further includes a steel wire rope reinforcing core, and the four cable core units are arranged around the outer periphery of the steel wire rope reinforcing core.

[0009] Further, the wrapping tape is a mica tape.

[0010] Further, the inner sheath and the inner liner are made of polyethylene material.

[0011] Further, the armour layer is a steel wire armour layer.

[0012] Further, a plurality of wear-resistant strips are protruded along the axial direction of the outer sheath on the outer surface of the outer sheath.

[0013] Further, the outer sheath is made of polyvinyl chloride material.

[0014] The high-strength compression-resistant cable of the utility model can process the inner sheath outside the aramid silk braiding layer by the extrusion mode, and the concave-convex surface of the inner sheath can be conveniently processed by selecting the corresponding extrusion die, and the wrapping tape is wrapped outside the inner sheath, so that the buffer cavity is naturally formed between the inner sheath and the wrapping tape, and the compression-resistant effect of the cable can be realized without installing the complex structure such as spring inside the cable, which is easy and convenient to implement. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further described below in combination with the drawings and examples.

[0016] Figure 1 is the sectional view of the high-strength compression-resistant cable of the utility model.

[0017] In the figure: 1, cable core unit, 11, conductor, 12, insulating layer, 2, filling layer, 3, aramid yarn braiding layer, 4, inner sheath, 5, wrapping tape, 6, inner liner, 7, armored layer, 8, outer sheath, 81, wear-resistant strip, 9, steel wire rope reinforcing core, 10, buffer cavity. DETAILED DESCRIPTION

[0018] The utility model will be explained in detail in combination with the drawings. The figure is a simplified schematic diagram, and only the basic structure of the utility model is schematically shown, so it only shows the structure related to the utility model.

[0019] Please refer to Figure 1 The utility model provides a kind of high-strength compression-resistant cable, including cable core unit 1, the outside of cable core unit 1 is provided with filling layer 2, the outside of filling layer 2 is provided with aramid yarn braiding layer 3, aramid yarn braiding layer 3 is extruded and covered with inner sheath 4, the outside of inner sheath 4 is wrapped with wrapping tape 5, the outside of wrapping tape 5 is provided with inner liner 6, the outside of inner liner 6 is provided with armored layer 7, the outside of armored layer 7 is provided with outer sheath 8, the outer surface of inner sheath 4 is the concave-convex surface with wave crest and wave trough, wrapping tape 5 is tightly wound on the wave crest of inner sheath 4, and buffer cavity 10 is formed between wrapping tape 5 and inner sheath 4.

[0020] Cable core unit 1 includes conductor 11 and insulating layer 12, and filling layer 2 is arranged outside the insulating layer 12.In the embodiment, cable core unit 1 has four, and is uniformly distributed.In addition, the high-strength compression-resistant cable of the utility model further includes steel wire rope reinforcing core 9, and the four cable core units 1 are arranged around the outer periphery of the steel wire rope reinforcing core 9, and the steel wire rope reinforcing core 9 has certain elasticity and toughness, so that the cable has bending ability, and the cable can be prevented from being damaged due to excessive bending and twisting.

[0021] Filling layer 2 is made of polyethylene material, and the cross section of filling layer 2 is circular, so as to tightly arrange aramid yarn braiding layer 3 outside it.Aramid yarn braiding layer 3 is a new type of composite high-performance braiding bag, which has very high strength, and when the cable is subjected to axial load, aramid yarn braiding layer 3 can ensure that the cable is not easily stretched and deformed, thereby ensuring the strength of the cable.

[0022] The inner sheath 4 is processed on the outside of the aramid yarn braided layer 3 by an extrusion coating machine, and a die head with a wavy inner surface is selected, so that the outer surface of the inner sheath 4 is naturally formed into a concave-convex surface with peaks and valleys after the extrusion coating is completed. The wrapping tape 5 is tightly wound on the outside of the inner sheath 4 by a wrapping machine, and the inner sheath 4 and the wrapping tape 5 naturally form a buffer cavity 10 after the wrapping tape 5 is tightly wound. When the cable is subjected to radial pressure, the cable inside corresponding to the buffer cavity 10 will be deformed, thereby buffering the external load and achieving the pressure resistance effect. In a specific embodiment, the wrapping tape 5 is a mica tape, which is a kind of fireproof insulation material and can have excellent insulation performance and combustion resistance at high temperatures.

[0023] The inner lining layer 6 is extruded on the outside of the wrapping tape 5, so as to fix the wrapping tape 5 on the outside of the inner sheath 4, and meanwhile, the inner lining layer 6 can prevent the wrapping tape 5 from being damaged by the armored layer 7 during the installation of the armored layer 7. The inner sheath 4 and the inner lining layer 6 are extruded by polyethylene.

[0024] The armored layer 7 is used to improve the structural strength of the cable, and can prevent the cable from being bitten by mice or being deformed by construction pressure when the cable is directly buried or applied in a collision-prone environment. In a specific embodiment, the armored layer 7 is a steel wire armored layer, which has high magnetic permeability and can have good magnetic shielding effect and strong anti-interference ability.

[0025] The outer sheath 8 is the outermost protective layer of the cable and can effectively prevent the cable from being abraded. A plurality of wear-resistant strips 81 are protruded on the outer surface of the outer sheath 8 along the axial direction of the outer sheath 8, and the wear-resistant strips 81 can be used to contact the ground during the pulling of the cable, so as to reduce the contact area of the bottom surface of the outer sheath 8 and thus achieve good wear-resistant effect. The outer sheath 8 is made of flame-retardant polyvinyl chloride material.

[0026] Compared with the prior art, the high-strength pressure-resistant cable of the utility model can process the inner sheath 4 on the outside of the aramid yarn braided layer 3 by extrusion coating, and can conveniently process the concave-convex surface of the inner sheath 4 by selecting a corresponding extrusion coating die head. Meanwhile, the wrapping tape 5 is wrapped on the outside of the inner sheath 4, so that the inner sheath 4 and the wrapping tape 5 naturally form a buffer cavity 10, and the cable can achieve the pressure resistance effect without installing complex structures such as springs in the cable, which is easy and convenient to implement.

[0027] Based on the above ideal embodiments of the utility model, through the above description, relevant personnel can make various changes and modifications without deviating from the scope of the utility model. The technical scope of the utility model is not limited to the content in the specification, and must be determined according to the scope of the claims.

Claims

1. A high strength, compression resistant cable, characterized by: The high-strength compression-resistant cable comprises a cable core unit, an outer surface of the cable core unit is provided with a filling layer, an outer surface of the filling layer is provided with an aramid yarn braiding layer, an outer surface of the aramid yarn braiding layer is extruded with an inner sheath, an outer surface of the inner sheath is wrapped with a wrapping tape, an outer surface of the wrapping tape is provided with an inner lining layer, an outer surface of the inner lining layer is provided with an armor layer, an outer surface of the armor layer is provided with an outer sheath, an outer surface of the inner sheath is a concave-convex surface with wave crests and wave troughs, the wrapping tape is tightly wound on the wave crests of the inner sheath, and a buffer cavity is formed between the wrapping tape and the inner sheath.

2. The high strength compression resistant cable of claim 1, wherein: The cable core unit comprises a conductor and an insulation layer, and the filling layer is arranged outside the insulation layer.

3. A high strength compression resistant cable as claimed in claim 2, wherein: The cable core unit has four, and the high-strength compression-resistant cable further comprises a steel wire rope reinforcing core, and the four cable core units are arranged around an outer periphery of the steel wire rope reinforcing core.

4. The high strength compression resistant cable of claim 1, wherein: The wrapping tape is a mica tape.

5. The high strength compression resistant cable of claim 1, wherein: The inner sheath and the inner lining layer are made of polyethylene material.

6. The high strength compression resistant cable of claim 1, wherein: The armor layer is a steel wire armor layer.

7. The high strength compression resistant cable of claim 1, wherein: A plurality of wear-resistant strips are protruded on an outer surface of the outer sheath along an axial direction of the outer sheath.

8. A high strength compression resistant cable as claimed in claim 7, wherein: The outer sheath is made of polyvinyl chloride material.

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