High-strength tensile cable

Abstract

The utility model discloses a high-strength tensile cable, which belongs to the technical field of cables and comprises a plurality of mutually wound cable core units, a first non-woven fabric is tightly wound outside the plurality of cable core units, a plurality of tensile cotton ropes are arranged on the outer surface of the first non-woven fabric along the length direction of the cable, a second non-woven fabric is wound outside the first non-woven fabric, and the tensile cotton ropes are arranged on the outer surface of the second non-woven fabric along the length direction of the cable. The tensile cotton rope is tightly extruded on the first non-woven fabric by the second non-woven fabric, the winding direction of the first non-woven fabric is the same as that of the second non-woven fabric and is opposite to that of the cable core units, and an inner sheath is arranged outside the second non-woven fabric. According to the high-strength tensile cable, the strength of the cable is enhanced by the first non-woven fabric and the second non-woven fabric, the tensile cotton rope does not occupy more space in the cable, the tensile performance is good, the deformation of the cable is reduced by the winding direction of the non-woven fabrics, and the mechanical property of the cable is improved.

Description

Technical Field

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

[0002] A cable is a combination of wires consisting of one or more mutually insulated conductors placed in a sheath. With its strong current-carrying capacity, it plays an irreplaceable role in large-scale power transmission, complex communication networks and special industrial environments.

[0003] The tensile strength of a cable refers to the maximum tensile force it can withstand during the cable pulling process. This strength directly impacts the safety and stability of the cable during installation, laying, and use. To enhance the cable's tensile strength, in addition to the steel belt layer within the cable, a flexible tensile reinforcement is also installed in the center of the cable. This reinforcement is typically cylindrical and occupies a significant amount of space within the cable, thus increasing its size. Furthermore, the twisted and wound structure of multiple cable cores increases the cable's elastic and stress deformation, which can easily alter the cable's shape and compromise its structural stability. Utility Model Content

[0004] The technical problem to be solved by the present invention is that in the prior art, the cylindrical tensile reinforcement in the middle of the cable occupies a large space inside the cable, resulting in an increase in size. At the same time, the twisted and wound cable core will increase the deformation of the cable. Based on this, the present invention provides a cable that ensures a small cable size while also ensuring good tensile performance and high strength.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a high-strength tensile cable, comprising a plurality of cable core units wound with each other, the outside of the plurality of cable core units being tightly wound with a first non-woven fabric, the outer surface of the first non-woven fabric being provided with a plurality of tensile-resistant cotton ropes along the length direction of the cable, the outside of the first non-woven fabric being wrapped with a second non-woven fabric, the second non-woven fabric tightly squeezing the tensile-resistant cotton ropes onto the first non-woven fabric, the winding direction of the first non-woven fabric being the same as the winding direction of the second non-woven fabric and being opposite to the winding direction between the plurality of cable core units, and the outside of the second non-woven fabric being provided with an inner sheath.

[0006] Furthermore, the first non-woven fabric and the second non-woven fabric are both strip-shaped structures, and the winding overlap rate of the first non-woven fabric and the winding overlap rate of the second non-woven fabric are both 30%-50%.

[0007] Furthermore, a plurality of the tensile-resistant cotton ropes are evenly distributed on the outer peripheral surface of the first non-woven fabric.

[0008] Furthermore, the cable core unit includes a metal conductor, a main insulation layer, a shielding layer and a secondary insulation layer, the main insulation layer is arranged outside the metal conductor, the shielding layer is arranged outside the main insulation layer, and the secondary insulation layer is arranged outside the shielding layer.

[0009] Furthermore, the inner sheath is made of polyvinyl chloride material.

[0010] Furthermore, the high-strength tensile cable also includes an inner lining layer, an armor layer, a flame retardant layer and an outer sheath, the inner lining layer is arranged outside the inner sheath, the armor layer is arranged outside the inner lining layer, the flame retardant layer is arranged outside the armor layer, and the outer sheath is arranged outside the flame retardant layer.

[0011] Furthermore, the inner lining layer is made of cross-linked polyethylene material.

[0012] Furthermore, the armor layer is made of steel wire or steel strip.

[0013] Furthermore, the outer sheath is made of polyurethane material.

[0014] The beneficial effects of the utility model are:

[0015] 1. The first non-woven fabric and the second non-woven fabric are used to wrap the cable core unit, which enhances the strength of the cable and is difficult to be easily broken;

[0016] 2. The tensile cotton rope is arranged between the first non-woven fabric and the second non-woven fabric. Since the first non-woven fabric and the second non-woven fabric are closely attached to each other, the tensile cotton rope can be tightly squeezed between the first non-woven fabric and the second non-woven fabric, which can effectively prevent the tensile cotton rope from moving easily.

[0017] 3. The tensile cotton rope will not take up much space inside the cable, and while ensuring the cable size is small, it can also make the cable have good tensile performance;

[0018] 4. The elastic deformation of the cable caused by winding the first non-woven fabric and the second non-woven fabric and the elastic deformation of the cable caused by winding the cable core unit partially offset each other in opposite directions, thereby reducing the elastic deformation and stress deformation of the cable and improving the mechanical properties of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 It is a structural schematic diagram of the high-strength tensile cable of the utility model.

[0021] In the figure: 1. Cable core unit, 11. Metal conductor, 12. Primary insulation layer, 13. Shielding layer, 14. Secondary insulation layer, 2. First non-woven fabric, 3. Tensile-resistant cotton rope, 4. Second non-woven fabric, 5. Inner sheath, 6. Inner lining layer, 7. Armor layer, 8. Flame retardant layer, 9. Outer sheath. DETAILED DESCRIPTION

[0022] The present invention will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, which only illustrates the basic structure of the present invention in a schematic manner, and therefore only shows the components related to the present invention.

[0023] See also Figure 1 The utility model provides a high-strength tensile-resistant cable, comprising a plurality of cable core units 1 wound with each other, a first non-woven fabric 2 tightly wound around the outside of the plurality of cable core units 1, a plurality of tensile-resistant cotton ropes 3 arranged on the outer surface of the first non-woven fabric 2 along the length direction of the cable, a second non-woven fabric 4 wrapped around the outside of the first non-woven fabric 2, the second non-woven fabric 4 tightly squeezes the tensile-resistant cotton ropes 3 onto the first non-woven fabric 2, the winding direction of the first non-woven fabric 2 is the same as the winding direction of the second non-woven fabric 4 and is opposite to the winding direction between the plurality of cable core units 1, and an inner sheath 5 is arranged on the outside of the second non-woven fabric 4.

[0024] In the high-strength, tensile-resistant cable of the present invention, the first non-woven fabric 2 and the second non-woven fabric 4 are lightweight and thin, allowing them to tightly wrap multiple cable core units 1. This significantly reduces the gap between the cable core units 1 and the first non-woven fabric 2, effectively preventing the cable core units 1 from moving, and ensuring the structural and positional stability of the cable core units 1. Furthermore, the first non-woven fabric 2 and the second non-woven fabric 4 have high strength and excellent tensile properties, making them difficult to break easily, thereby enhancing the tensile strength of the cable. The tensile-resistant cotton rope 3 is disposed between the first non-woven fabric 2 and the second non-woven fabric 4. Because the first non-woven fabric 2 and the second non-woven fabric 4 fit tightly together, the tensile-resistant cotton rope 3 is tightly squeezed between the first non-woven fabric 2 and the second non-woven fabric 4, effectively preventing the tensile-resistant cotton rope 3 from easily moving. Furthermore, the tensile-resistant cotton rope 3, the first non-woven fabric 2, and the second non-woven fabric 4 are relatively soft in texture, and when they fit tightly together, they will all deform to a certain extent, further ensuring the fixing effect of the tensile-resistant cotton rope 3.

[0025] The tensile-resistant cotton rope 3 has a high elastic modulus and deformation capacity, capable of absorbing mechanical vibration and impact energy. Its high tensile strength prevents the cable from being easily damaged by tension. Furthermore, the tensile-resistant cotton rope 3 is thinner than traditional tensile reinforcement structures and does not occupy much space within the cable. This ensures that the cable has good tensile properties while maintaining a small size.

[0026] In addition, the winding direction of the first non-woven fabric 2 and the second non-woven fabric 4 is opposite to the winding direction of the cable core unit 1, so that the elastic deformation of the cable when the first non-woven fabric 2 and the second non-woven fabric 4 are wound and the elastic deformation of the cable when the cable core unit 1 is wound partially offset each other in opposite directions, thereby reducing the elastic deformation and stress deformation of the cable and improving the mechanical properties of the cable.

[0027] In this embodiment, both the first non-woven fabric 2 and the second non-woven fabric 4 are strip-shaped structures. The wrapping overlap ratio of the first non-woven fabric 2 is 30%-50%, and the wrapping overlap ratio of the second non-woven fabric 4 is 30%-50%. The wrapping overlap ratio refers to the ratio of the width of the overlapping portion of the non-woven fabric to the width of the non-woven fabric itself. By controlling the wrapping overlap ratio, the continuity of the non-woven fabric during wrapping is ensured, the structural strength of the wrapped non-woven fabric is enhanced, and the strength of the cable is further improved.

[0028] As a preferred embodiment, a plurality of tensile cotton ropes 3 are evenly distributed on the outer peripheral surface of the first non-woven fabric 2, thereby ensuring the uniformity of the structural strength at various positions along the circumference of the cable, which is beneficial to enhancing the overall structural strength of the cable.

[0029] The cable core unit 1 includes a metal conductor 11, a main insulating layer 12, a shielding layer 13 and a secondary insulating layer 14. The main insulating layer 12 is arranged on the outside of the metal conductor 11, the shielding layer 13 is arranged on the outside of the main insulating layer 12, and the secondary insulating layer 14 is arranged on the outside of the shielding layer 13. In this embodiment, the metal conductor 11 is made of aluminum alloy. The main insulating layer 12 and the secondary insulating layer 14 insulate the metal conductor 11 from the inside and outside of the shielding layer 13 respectively. The shielding layer 13 is used to shield external electromagnetic signals to avoid affecting the metal conductor 11. The shielding layer 13 can be a steel wire braided layer or a copper wire braided layer. In this embodiment, the cable core unit 1 includes a main cable core unit located in the center and a plurality of secondary cable core units wrapped around the outside of the main cable core unit. The wire diameter of the main cable core unit is larger than that of the secondary cable core unit.

[0030] The inner sheath 5 is made of polyvinyl chloride material and is used to protect the second non-woven fabric 4 from being damaged.

[0031] The high-strength tensile cable of the present invention also includes an inner lining layer 6, an armor layer 7, a flame retardant layer 8 and an outer sheath 9. The inner lining layer 6 is arranged outside the inner sheath 5, the armor layer 7 is arranged outside the inner lining layer 6, the flame retardant layer 8 is arranged outside the armor layer 7, and the outer sheath 9 is arranged outside the flame retardant layer 8.

[0032] The inner lining layer 6 is made of cross-linked polyethylene material, which has good mechanical properties and crack resistance and can significantly improve the strength of the cable.

[0033] The armor layer 7 can withstand external mechanical pressure and impact, and protect the cable from external physical damage such as pulling, squeezing, etc. In specific implementation, the armor layer 7 is usually made of steel wire or steel belt.

[0034] The flame retardant layer 8 is made of flame retardant PVC material to enhance the flame retardant performance of the cable.

[0035] The outer sheath 9 is the outermost protective sheath of the cable and is made of polyurethane material. Polyurethane is a thermoplastic elastomer with extremely strong wear resistance, cut resistance and tear resistance. It can maintain high flexibility even in low temperature environments, which can prevent the cable from being easily damaged when bent, thereby protecting the internal structure of the outer sheath 9 from being damaged.

[0036] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the scope of the present invention. The technical scope of this utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A high-strength tensile cable comprising a plurality of cable core units wound around each other, characterized in that: The outside of the multiple cable core units is tightly wrapped with a first non-woven fabric, the outer surface of the first non-woven fabric is provided with a plurality of tensile cotton ropes along the length direction of the cable, the outside of the first non-woven fabric is wrapped with a second non-woven fabric, the second non-woven fabric tightly squeezes the tensile cotton ropes on the first non-woven fabric, the winding direction of the first non-woven fabric is the same as the winding direction of the second non-woven fabric and is opposite to the winding direction between the multiple cable core units, and the outside of the second non-woven fabric is provided with an inner sheath.

2. The high-strength tensile cable according to claim 1, characterized in that: The first non-woven fabric and the second non-woven fabric are both in a strip-shaped structure, and the winding overlap rate of the first non-woven fabric and the winding overlap rate of the second non-woven fabric are both 30%-50%.

3. The high-strength tensile cable according to claim 1 or 2, characterized in that: A plurality of tensile-resistant cotton ropes are evenly distributed on the outer peripheral surface of the first non-woven fabric.

4. The high-strength tensile cable according to claim 1, characterized in that: The cable core unit includes a metal conductor, a main insulating layer, a shielding layer and a secondary insulating layer. The main insulating layer is arranged outside the metal conductor, the shielding layer is arranged outside the main insulating layer, and the secondary insulating layer is arranged outside the shielding layer.

5. The high-strength tensile cable according to claim 1, characterized in that: The inner sheath is made of polyvinyl chloride material.

6. The high-strength tensile cable according to claim 1, characterized in that: The high-strength tensile cable also includes an inner lining layer, an armor layer, a flame retardant layer and an outer sheath. The inner lining layer is arranged outside the inner sheath, the armor layer is arranged outside the inner lining layer, the flame retardant layer is arranged outside the armor layer, and the outer sheath is arranged outside the flame retardant layer.

7. The high-strength tensile cable according to claim 6, characterized in that: The inner lining layer is made of cross-linked polyethylene material.

8. The high-strength tensile cable according to claim 6, characterized in that: The armor layer is made of steel wire or steel belt.

9. The high-strength tensile cable according to claim 6, characterized in that: The outer sheath is made of polyurethane material.

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