A rotatable cable intermediate joint

Abstract

The utility model relates to cable connection technical field discloses a rotatable cable intermediate joint, including cable outer sheath, cable armoring, around armored tape, cable inner sheath, cable copper band shield layer, bridge line, cable insulation shield layer, cable insulation layer, cable conductor, connecting pipe, cold shrink joint main part, semi -conductive tape and waterproof tape, constant force spring, cable outer sheath cladding is in the outer surface of cable armoring, around armored tape is around in the connecting part of cable armoring, cable inner sheath is located in the inside of around armored tape, through the cooperation of the multilayer mechanical protection structure that cable outer sheath, cable armoring, around armored tape, cable inner sheath are composed and constant force spring, has promoted the mechanical strength and the anti -torque ability of joint, can effectively resist the external force and the torque impact under the rotary working condition, avoids the loose or structural damage of connection, guarantees the long -term stability of joint under the dynamic environment, thereby improved the use effect of this intermediate joint.

Description

Technical Field

[0001] This utility model relates to the field of cable connection technology, specifically a rotatable cable intermediate joint. Background Technology

[0002] Cables are core devices for transmitting electrical energy or signals, consisting of a conductor, insulation layer, shielding layer (in some types), and sheath layer. The conductor is mostly copper or aluminum, responsible for conducting electricity. The insulation layer isolates current and prevents leakage; common materials include PVC and XLPE. The sheath layer provides wear resistance, corrosion protection, and waterproof protection. Cables are widely used in power systems, industrial automation, communication networks, and other fields, and are a key infrastructure for power supply and information exchange in modern society.

[0003] Currently, when using cable joints, traditional cable joints lack a dedicated anti-torsion structure design. When faced with continuous dynamic torque, the connection between the outer sheath, armor layer, and internal insulation and conductor lacks an elastic or rigid anti-torsion mechanism. The torque will gradually tear the connection between the layers, causing the armor tape to loosen, the connecting tube to shift, and then leading to cracking of the insulation shielding layer, damage to the insulation layer, and ultimately, structural loosening and component damage problems such as deformation of the outer sheath and breakage of internal components. This not only causes insulation failure and conduction interruption, but also causes safety hazards such as leakage and short circuit. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a rotatable cable intermediate joint, which solves the problem that when faced with continuous dynamic torque, the connection between the outer sheath, armor layer and internal insulation and conductor lacks elasticity or rigid anti-torsion mechanism. Torque will gradually tear the connection between the layers, causing the armor tape to loosen, the connecting tube to shift, and then leading to cracking of the insulation shielding layer, damage to the insulation layer, and ultimately deformation of the outer sheath, breakage of internal components, and other structural loosening and component damage problems. This not only causes insulation failure and conduction interruption, but also causes safety hazards such as leakage and short circuit.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a rotatable cable intermediate joint, comprising an outer cable sheath, cable armor, wrapping armor tape, inner cable sheath, copper tape shielding layer, bridging wire, cable insulation shielding layer, cable insulation layer, cable conductor, connecting pipe, cold shrink joint body, semi-conductive tape and waterproof tape, and constant force spring;

[0008] The outer sheath of the cable covers the outer surface of the cable armor, the armor wrapping tape wraps around the connection part of the cable armor, the inner sheath of the cable is located inside the armor wrapping tape, the inner sheath of the cable covers the outer surface of the cable copper tape shielding layer, and the bridging wire connects the connection point of the two sections of the cable copper tape shielding layer.

[0009] Preferably, the cable insulation shielding layer covers the outside of the cable insulation layer, and the cable insulation layer wraps around the outside of the cable conductor.

[0010] Preferably, the connecting pipe is connected at the junction of the two cable conductors.

[0011] Preferably, the cold shrink joint body is wrapped around the connection area of ​​the cable insulation layer and the cable insulation shielding layer.

[0012] Preferably, the constant force spring is connected to the mating area between the cable armor and the cable outer sheath at the end of the connector.

[0013] Preferably, the semiconductive tape and waterproof tape are wrapped around the transition area between the cable insulation shielding layer and the cold shrink joint body.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a rotatable cable intermediate joint, which has the following advantages:

[0016] 1. This rotatable cable intermediate joint, through the cooperation of a multi-layer mechanical protection structure consisting of an outer cable sheath, cable armor, wrapping armor tape, and inner cable sheath, and a constant force spring, enhances the mechanical strength and torque resistance of the joint. Under rotational conditions, it can effectively resist external forces and torque impacts, avoid loosening of the connection or structural damage, and ensure the long-term stability of the joint in dynamic environments, thereby improving the performance of the intermediate joint. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal cross-sectional structure of the rotatable cable intermediate joint of this utility model;

[0018] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Cable outer sheath; 2. Cable armor; 3. Armor wrapping tape; 4. Cable inner sheath; 5. Cable copper tape shielding layer; 6. Bridging cable; 7. Cable insulation shielding layer; 8. Cable insulation layer; 9. Cable conductor; 10. Connecting pipe; 11. Cold shrink joint body; 12. Semi-conductive tape and waterproof tape; 13. Constant force spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-2 This utility model provides a new technical solution:

[0022] Cable outer sheath 1: During installation, it covers the outer surface of the cable armor 2 and is the outermost protective structure of the joint. It resists external mechanical damage, moisture, corrosion and other environmental erosion, and protects the integrity of internal components.

[0023] Cable armor 2: Installed inside the outer sheath 1 of the cable and covered by it, distributed along the cable axis, to enhance the overall mechanical strength of the joint, improve tensile and compressive strength, and adapt to the mechanical requirements of rotating scenarios;

[0024] Armor wrapping tape 3: During installation, it is wrapped around the connection part of the cable armor 2 to reinforce the joint of the two sections of cable armor 2, prevent the armor layer from loosening due to rotational torque, and ensure the stability of mechanical connection;

[0025] Cable inner sheath 4: Installed inside the wrapping armor tape 3 and covering the outer surface of the cable copper tape shielding layer 5, it isolates the armor layer and the shielding layer to avoid friction damage between the two, and at the same time helps to block impurities from entering the internal shielding system;

[0026] Cable copper tape shielding layer 5: Installed inside the inner sheath 4 of the cable and covered by it, forming a continuous metal shield along the cable axis, suppressing the intrusion of external electromagnetic interference, while preventing the internal electromagnetic field from radiating outward, and ensuring transmission quality.

[0027] Bridge line 6: During installation, it is connected at the joint of the copper strip shielding layer 5 of the two cable sections to realize the electrical conduction of the shielding layer, maintain the integrity of the shielding system, and ensure that the electromagnetic shielding effect is continuous and uninterrupted.

[0028] Cable insulation shielding layer 7: During installation, it is wrapped around the outside of the cable insulation layer 8 to distribute the electric field evenly, avoid local electric field concentration in the insulation layer 8, reduce the risk of insulation breakdown, and ensure electrical safety;

[0029] Cable insulation layer 8: Wrapped around the outside of the cable conductor 9 during installation, it is the core electrical insulation structure, blocking current leakage, isolating the conductor from external components, and preventing faults such as short circuits and leakage.

[0030] Cable conductor 9: Installed inside and wrapped by the cable insulation layer 8, it is the core carrier for the transmission of electrical energy or signals, undertakes the task of current transmission, and provides energy or signal path for the electrical system;

[0031] Connecting pipe 10: During installation, it is connected to the joint of the two cable conductors 9 to achieve mechanical fixation and electrical conduction of the two conductors, reduce contact resistance, and ensure continuous and low-loss current transmission;

[0032] Cold shrink joint body 11: During installation, it is wrapped around the connection area of ​​cable insulation layer 8 and cable insulation shielding layer 7 to restore the insulation performance at the joint, and at the same time provide mechanical protection for the mating part of the insulation layer and insulation shielding layer, adapting to the dynamic protection requirements of rotation conditions.

[0033] Semiconducting and waterproof tape 12: During installation, it is wrapped around the transition area between the cable insulation shielding layer 7 and the cold shrink joint body 11 to achieve a smooth transition of semiconducting performance, avoid electric field distortion, and form a reliable seal to prevent moisture from entering the joint and delay component aging.

[0034] Constant force spring 13: During installation, it connects to the mating area between the cable armor 2 and the cable outer sheath 1 at the end of the connector, providing continuous and stable mechanical pressure, pressing the connection parts of each layer, resisting the torque impact of rotation, preventing the components from loosening, and ensuring the long-term stability of the overall structure.

[0035] Furthermore, the multi-layered mechanical protection structure composed of the cable outer sheath 1, cable armor 2, wrapping armor tape 3, and cable inner sheath 4, combined with the constant force spring 13, enhances the mechanical strength and torque resistance of the joint. Under rotating conditions, it can effectively resist external forces and torque impacts, prevent loosening of the connection or structural damage, and ensure the long-term stability of the joint in dynamic environments, thereby improving the performance of the intermediate joint.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotatable cable joint, characterized in that: Includes cable outer sheath (1), cable armor (2), wrapping armor tape (3), cable inner sheath (4), cable copper tape shielding layer (5), bridging wire (6), cable insulation shielding layer (7), cable insulation layer (8), cable conductor (9), connecting pipe (10), cold shrink joint body (11), semi-conductive tape and waterproof tape (12), constant force spring (13); The outer sheath (1) of the cable covers the outer surface of the cable armor (2), the armor wrapping tape (3) wraps around the connection part of the cable armor (2), the inner sheath (4) of the cable is located inside the armor wrapping tape (3), the inner sheath (4) of the cable covers the outer surface of the copper tape shielding layer (5) of the cable, and the bridging wire (6) is connected at the connection point of the two sections of the copper tape shielding layer (5).

2. A rotatable cable joint according to claim 1, characterized in that: The cable insulation shielding layer (7) covers the outside of the cable insulation layer (8), and the cable insulation layer (8) wraps around the outside of the cable conductor (9).

3. A rotatable cable joint according to claim 1, characterized in that: The connecting pipe (10) is connected at the junction of the two cable conductors (9).

4. A rotatable cable joint according to claim 1, characterized in that: The cold shrink joint body (11) is wrapped around the connection area of ​​the cable insulation layer (8) and the cable insulation shielding layer (7).

5. A rotatable cable joint according to claim 1, characterized in that: The constant force spring (13) is connected to the mating area between the cable armor (2) and the cable outer sheath (1) at the end of the connector.

6. A rotatable cable joint according to claim 1, characterized in that: The semiconductive tape and waterproof tape (12) are wrapped around the transition area between the cable insulation shielding layer (7) and the cold shrink joint body (11).

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