A low-voltage power cable

Abstract

The present invention relates to the technical field of cables, and proposes a low-voltage power cable, which includes a plurality of conductive cables. Each conductive cable includes a plurality of stranded conductors, and an insulating layer is coated outside each of the plurality of stranded conductors; the plurality of stranded conductors are all arranged inside a lining layer, a filling layer is arranged between the lining layer and the plurality of insulating layers, and a sheath layer is coated outside the lining layer. The low-voltage power cable further includes a docking cylinder, a wire laying assembly, a conductive frame, a conductive assembly, and a heat dissipation assembly. A docking cylinder is slidably sleeved at the end of each sheath layer, the wire laying assembly is installed on the docking cylinder, a conductive frame is arranged between every two docking cylinders with opposite positions, a conductive assembly is installed on each conductive frame, and a heat dissipation assembly is installed on each conductive assembly. Through the above technical solution, the problem in the prior art is solved that at the position where two cables are docked, a relatively high current density is likely to occur, causing the local temperature at the contact point to rise, resulting in a gap between the two cables and affecting the current transmission performance.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and particularly to a low-voltage power cable. Background Art

[0002] A cable is a wire used for power transmission and distribution, consisting of one or more insulated conductors covered with a layer of protective material. Cables are commonly used in various indoor and outdoor power system applications, such as household appliances, lighting equipment, communication facilities, etc. According to their uses and voltage levels, cables can be divided into high-voltage cables, medium-voltage cables, and low-voltage cables to meet the requirements of different application scenarios.

[0003] Among them, a low-voltage power cable is a cable suitable for transmitting and distributing low-voltage electric energy, mainly used for connecting power supply equipment and electrical equipment, usually operating at a voltage level of 1 kVA or lower. This type of cable is commonly used as part of the power transmission and distribution system in homes, commercial buildings, and industrial settings.

[0004] To simplify the wiring process, reduce line redundancy, facilitate management and maintenance, multiple cables are generally joined together, and to improve the reliability of the system, make full use of existing cable resources, and reduce cable costs. However, at the position where two cables are joined, relatively high current density and electric field concentration often occur, which causes the local temperature at the contact point to rise. At the same time, the temperature of the external environment also affects the temperature at the joining position, and local high temperature will accelerate cable aging and faults, affecting the normal operation of the cable. To ensure the safe and stable operation of the cable, heat-insulating materials are generally used to wrap the cable to avoid high temperature concentration at the cable joints. However, if the conductor expands too much or too quickly, it will still damage the connection, causing gaps between the cables due to expansion, reducing the actual contact area at the connection, which will increase the contact resistance and further affect the current transmission performance between the cables. Summary of the Invention

[0005] The present invention provides a low-voltage power cable, which solves the problem in the prior art that at the position where two cables are joined, relatively high current density and electric field concentration easily occur, causing the local temperature at the contact point to rise, resulting in gaps between the conductors of the two cables, thereby affecting the current transmission performance.

[0006] The technical solution of the present invention is as follows:

[0007] A low-voltage power cable includes a plurality of conductive cables. Each of the conductive cables includes a plurality of stranded conductors, and an insulating layer is coated outside each of the plurality of stranded conductors; the plurality of stranded conductors are all arranged inside a lining layer, a filling layer is filled between the lining layer and the plurality of insulating layers, a sheath layer is coated outside the lining layer, and further includes:

[0008] Docking cylinder, each end of the sheath layer is slidably sleeved with the docking cylinder;

[0009] Fixing component, the fixing component is arranged on each of the plurality of docking cylinders for fixing the position of the docking cylinder;

[0010] Wire laying component, the wire laying component is installed on the docking cylinder for separating a plurality of stranded conductors;

[0011] Joint component, the joint component is arranged at the end of each stranded conductor;

[0012] Conductive frame, the conductive frame is arranged between every two docking cylinders with opposite positions, and the conductive frame is electrically connected to the joint component;

[0013] Conductive component, the conductive component is installed on each conductive frame for conducting electricity;

[0014] Heat dissipation component, the heat dissipation component is installed on each conductive component for heat dissipation.

[0015] On the basis of the foregoing solution, the fixing component includes:

[0016] Fixing ring, the fixing ring is fixedly installed on each docking cylinder, and the inner side wall of the fixing ring is in sliding contact with the sheath layer;

[0017] Fixing screw, a plurality of fixing screws are arranged on each fixing ring in a circumferential and equiangular threaded manner, and the bottom end of the fixing screw abuts against the sheath layer.

[0018] On the basis of the foregoing solution, the wire laying component includes:

[0019] Installation cylinder, the installation cylinder is arranged on each docking cylinder, and the connection mode between the installation cylinder and the docking cylinder is threaded connection, and the thread directions of every two installation cylinders with opposite positions are opposite;

[0020] Wire laying board, the wire laying board is rotatably installed inside each installation cylinder;

[0021] Installation hole, a plurality of installation holes are arranged on each wire laying board in a circumferential and equiangular manner, a plurality of stranded conductors correspond to the plurality of installation holes one by one, and the installation hole is in sliding contact with the insulating layer.

[0022] On the basis of the foregoing solution, the joint component includes:

[0023] Conductive joint, the conductive joint is arranged at the end of each stranded conductor, the two ends of the conductive joint are set as crimping areas, and the middle part is set as a conductive area;

[0024] Conductive sheets, and a plurality of the conductive sheets are fixedly installed at equal angles in a circumferential shape on each of the conductive regions.

[0025] On the basis of the foregoing solution, the conductive assembly includes:

[0026] Mounting grooves, and a plurality of the mounting grooves are opened at equal angles in a circumferential shape at both ends of each of the conductive frames, and the plurality of mounting grooves correspond to the plurality of stranded conductors one by one;

[0027] Docking grooves, and the docking grooves are opened between every two opposite mounting grooves;

[0028] Conductive parts, and the conductive parts are installed in each of the mounting grooves for electrically connecting two opposite stranded conductors.

[0029] On the basis of the foregoing solution, the conductive part includes:

[0030] Conductive cylinders, and the conductive cylinders are detachably installed inside each of the docking grooves, and the plurality of conductive cylinders correspond to the plurality of conductive joints one by one;

[0031] Conductive sliding grooves, and a plurality of the conductive sliding grooves are opened at equal angles in a circumferential shape inside each of the conductive cylinders, the plurality of conductive sliding grooves correspond to the plurality of conductive sheets one by one, and the conductive sheets are slidably connected to the conductive sliding grooves;

[0032] Connecting conductors, and the connecting conductors are fixedly installed inside each of the mounting grooves, and both ends of the connecting conductors are fixedly connected to two opposite conductive cylinders respectively.

[0033] On the basis of the foregoing solution, the heat dissipation assembly includes:

[0034] Heat dissipation cylinders, and the heat dissipation cylinders are detachably installed outside each of the conductive frames;

[0035] Annular grooves, and the annular grooves are opened at the ends of each of the mounting cylinders;

[0036] Protective parts, and the protective parts are installed between the annular grooves on every two opposite mounting cylinders for protecting the conductive frames.

[0037] On the basis of the foregoing solution, the protective part includes:

[0038] Housings, and two of the housings are symmetrically and detachably installed between the annular grooves on every two opposite mounting cylinders;

[0039] Connecting screws, and the four corners of every two symmetrically arranged housings are connected by the connecting screws.

[0040] On the basis of the foregoing solution, it further includes an annular protrusion, and each of the outer shells is provided with the annular protrusion, and the annular protrusion is adapted to the heat dissipation cylinder body.

[0041] The working principle and beneficial effects of the present invention are as follows:

[0042] 1. In the present invention, the thread directions of the two relatively positioned mounting cylinders are opposite. During use, the docking stability is improved, the possibility of loosening between the threads is reduced, and multiple stranded conductors in the corresponding conductive cables are respectively passed through the corresponding mounting holes, so that the insulating layer is in sliding contact with the mounting holes, thereby reducing the influence of electromagnetic interference on the connection position and improving the current transmission performance.

[0043] 2. In the present invention, after the conductive connector is inserted into the conductive cylinder, the conductive sheet on the conductive connector enters the conductive sliding groove. When affected by high temperature, the stranded conductor expands, thereby pushing the corresponding conductive connector to slide in the conductive cylinder. At this time, relative sliding also occurs between the conductive sliding groove and the conductive sheet, which does not affect the normal current transmission, and the conductive sliding groove and the conductive sheet always maintain a sliding and pressing state, thereby avoiding the influence on conductivity and avoiding the phenomenon of increased contact resistance caused by the reduction of the actual contact area.

[0044] 3. In the present invention, the two ends of the two adapted outer shells are respectively butted corresponding to the annular grooves, and the two outer shells are butted through the setting of the connecting screws. Through the setting of the annular grooves, the outer shell and the two mounting cylinders form a whole, improving the stability. And due to the setting of the annular protrusion, the contact area with the air is increased, so that the high temperature transmitted by the heat dissipation cylinder body can be dissipated more quickly, avoiding the over-concentration of the temperature at the joint position and improving the working stability.

[0045] 4. In the present invention, through the setting of the fixing component and the wire laying component, while improving the speed of installing the conductive connector, the problem of electromagnetic interference between multiple stranded wires is reduced. Through the cooperation of the joint component and the conductive component, not only can the current transmission stability be maintained when affected by high temperature, but also the heat can be quickly transferred out, and there is a certain gap, improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The following further describes the present invention in detail with reference to the drawings and specific embodiments.

[0047] Figure 1 is the overall structural schematic diagram of the present invention;

[0048] Figure 2 is the sectional three-dimensional structural schematic diagram of the present invention;

[0049] Figure 3Schematic structural diagram of the conductive cable in the present invention;

[0050] Figure 4 Schematic cross-sectional structure diagram of the fixing component and the wire laying component in the present invention;

[0051] Figure 5 Schematic cross-sectional structure diagram of the cooperation between the wire laying component and the protection part in the present invention;

[0052] Figure 6 Schematic structural diagram of the joint component in the present invention;

[0053] Figure 7 Schematic cross-sectional structure diagram of the cooperation between the conductive component and the joint component in the present invention;

[0054] Figure 8 Schematic cross-sectional structure diagram of the conductive component in the present invention.

[0055] In the figure: 1, stranded conductor; 2, insulating layer; 3, inner lining layer; 4, filling layer; 5, sheath layer; 6, butt joint cylinder; 7, conductive frame; 8, fixing ring; 9, fixing screw; 10, mounting cylinder; 11, wire laying plate; 12, mounting hole; 13, conductive joint; 14, conductive sheet; 15, mounting groove; 16, butt joint groove; 17, conductive cylinder; 18, conductive chute; 19, connecting conductor; 20, heat dissipation cylinder body; 21, annular groove; 22, outer shell; 23, connecting screw; 24, annular protrusion. Specific embodiments

[0056] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0057] Such as Figures 1 to 8As shown in the figure, this embodiment proposes a low-voltage power cable, which includes a plurality of conductive cables. Each conductive cable includes a plurality of stranded conductors 1, and an insulating layer 2 is coated outside each of the plurality of stranded conductors 1; the plurality of stranded conductors 1 are all arranged inside a lining layer 3, and a filling layer 4 is filled between the lining layer 3 and the plurality of insulating layers 2. A sheath layer 5 is coated outside the lining layer 3. It also includes a docking cylinder 6, a fixing component, a wire laying component, a joint component, a conductive frame 7, a conductive component and a heat dissipation component. A docking cylinder 6 is slidably sleeved at the end of each sheath layer 5, and a fixing component is arranged on each of the plurality of docking cylinders 6 for fixing the position of the docking cylinder 6. The fixing component includes a fixing ring 8 and a fixing screw 9. A fixing ring 8 is fixedly installed on each docking cylinder 6, and the inner side wall of the fixing ring 8 is in sliding contact with the sheath layer 5. A plurality of fixing screws 9 are arranged on each fixing ring 8 in a circumferential and equiangular threaded manner, and the bottom end of the fixing screw 9 abuts against the sheath layer 5.

[0058] It should be added that the stranded conductor 1 is the main part of the conductive cable, responsible for conducting electric energy. The stranded conductor 1 is formed by stranding a plurality of insulated wires, and has good flexibility and plasticity, and can adapt to external deformations such as bending and twisting. The insulating layer 2 is located outside the stranded conductor 1, used to isolate and protect the stranded conductor 1 from external electromagnetic interference and prevent current leakage. The lining layer 3 plays a role in strengthening the insulating layer 2 and improving flexibility. The filling layer 4 is located between the lining layer 3 and the outer sheath layer 5, used to fill the gap between the two, and improve the overall softness and plasticity of the cable. The sheath layer 5 is located on the outermost layer, used to protect the cable from mechanical damage, chemical corrosion and other external factors. It should be noted that the material of the filling layer 4 can be rubber, silicone rubber or other soft materials, and the material of the sheath layer 5 can be rubber, polyurethane or other tough materials.

[0059] Specifically, when docking two conductive cables together, first perform a peeling treatment on the conductive cables to expose the stranded conductors 1 and the insulating layers 2, and make the end faces of the lining layer 3, the filling layer 4 and the sheath layer 5 flat. At this time, docking cylinders 6 are respectively sleeved on the opposite ends of the sheath layers 5 of the two conductive cables. At this time, the fixing ring 8 moves to the fixed position, and the fixing screws 9 are sequentially installed on the fixing ring 8, and then the fixing screws 9 are sequentially screwed until the bottom of the fixing screw 9 abuts against the sheath layer 5, so as to fix the relative position of the fixing ring 8 and the sheath layer 5, thereby fixing the position of the docking cylinder 6. Then install the wire laying component on the corresponding docking cylinder 6, separate the plurality of stranded conductors 1 and the insulating layers 2. At this time, peel the insulating layer 2 at the end to expose a part of the stranded conductor 1, then install the joint component on the stranded conductor 1, and connect the joint component with the conductive component to ensure a good connection relationship, and then install the heat dissipation component.

[0060] As Figure 4As shown, the wire laying assembly is installed on the docking cylinder 6 and is used to separate multiple stranded conductors 1. The wire laying assembly includes an installation cylinder 10, a wire laying plate 11, and installation holes 12. An installation cylinder 10 is provided on each docking cylinder 6. The connection method between the installation cylinder 10 and the docking cylinder 6 is threaded connection. The thread rotation directions between every two relatively positioned installation cylinders 10 are opposite. A wire laying plate 11 is rotatably installed inside each installation cylinder 10. A plurality of installation holes 12 are circumferentially and equiangularly formed on each wire laying plate 11. The multiple stranded conductors 1 correspond to the multiple installation holes 12 one by one, and the installation holes 12 are in sliding contact with the insulating layer 2.

[0061] Specifically, after the docking cylinder 6 is installed, prepare the corresponding installation cylinder 10, and install the corresponding installation cylinder 10 on the corresponding docking cylinder 6 by means of threaded connection. Since the thread rotation directions between two relatively positioned installation cylinders 10 are opposite, during use, the docking stability is improved, and the possibility of loosening between the threads is reduced. Then, the multiple stranded conductors 1 in the corresponding conductive cables are respectively passed through the corresponding installation holes 12, so that the insulating layer 2 is in sliding contact with the installation holes 12, thereby reducing the influence of electromagnetic interference on the connection position and improving the current transmission performance.

[0062] As Figure 6 shown, a joint assembly is provided at the end of each stranded conductor 1. The joint assembly includes a conductive joint 13 and conductive sheets 14. A conductive joint 13 is provided at the end of each stranded conductor 1. The two ends of the conductive joint 13 are set as crimping areas, and the middle part is set as a conductive area. A plurality of conductive sheets 14 are fixedly installed on each conductive area circumferentially and equiangularly.

[0063] Specifically, when docking the conductive cables, first sleeve the conductive joint 13 on the end of each stranded conductor 1, and then use a crimping tool to squeeze the crimping area, so as to firmly fix the conductive joint 13 on the corresponding stranded conductor 1.

[0064] As Figure 7 、 Figure 8 shown, a conductive frame 7 is provided between every two relatively positioned docking cylinders 6. The conductive frame 7 is electrically connected to the joint assembly. A conductive component for conducting electricity is installed on each conductive frame 7. The conductive component includes an installation groove 15, a docking groove 16, and a conductive part. A plurality of installation grooves 15 are circumferentially and equiangularly formed at both ends of each conductive frame 7. The multiple installation grooves 15 correspond to the multiple stranded conductors 1 one by one. A docking groove 16 is formed between every two opposite installation grooves 15. A conductive part is installed in each installation groove 15 for electrically connecting two opposite stranded conductors 1.

[0065] Specifically, insert the corresponding conductive connector 13 into the corresponding installation groove 15. At this time, the conductive sheet 14 enters the conductive part. Through the setting of the docking groove 16, the conductive part is electrically connected to the conductive connector 13 at the other end of the conductive frame 7, thereby realizing current transmission.

[0066] As described above, such as Figure 8 As shown, the conductive part includes a conductive cylinder 17, a conductive chute 18, and a connecting conductor 19. A conductive cylinder 17 is detachably installed inside each docking groove 16. The multiple conductive cylinders 17 correspond to the multiple conductive connectors 13 one by one. Multiple conductive chutes 18 are circumferentially and equally angled inside each conductive cylinder 17. The multiple conductive chutes 18 correspond to the multiple conductive sheets 14 one by one. The conductive sheet 14 is slidably connected to the conductive chute 18. A connecting conductor 19 is fixedly installed inside each installation groove 15. The two ends of the connecting conductor 19 are fixedly connected to two relatively positioned conductive cylinders 17 respectively.

[0067] Specifically, after the conductive connector 13 is inserted into the conductive cylinder 17, the conductive sheet 14 on the conductive connector 13 enters the conductive chute 18. At this time, the end of a conductive cable is electrically connected to another opposite conductive connector 13 through the conductive connector 13 and the conductive sheet 14, using the conductive chute 18 and the connecting conductor 19 to realize current transmission. When affected by high temperature, the stranded conductor 1 expands, thereby pushing the corresponding conductive connector 13 to slide inside the conductive cylinder 17. At this time, relative sliding also occurs between the conductive chute 18 and the conductive sheet 14, without affecting normal current transmission.

[0068] As Figure 5 As shown, a heat dissipation component is installed on each conductive component for heat dissipation. The heat dissipation component includes a heat dissipation cylinder 20, an annular groove 21, and a protection part. A heat dissipation cylinder 20 is detachably installed outside each conductive frame 7. An annular groove 21 is opened at the end of each installation cylinder 10. A protection part is installed between the annular grooves 21 on every two relatively positioned installation cylinders 10 for protecting the conductive frame 7.

[0069] Specifically, after installing the conductive cylinder 17 and the conductive connector 13, sleeved the heat dissipation cylinder 20 on the conductive frame 7, thereby transferring the heat at the joint.

[0070] As described above, such as Figure 5 As shown, the protection part includes a housing 22 and a connecting screw 23. Two housings 22 are symmetrically and detachably installed between the annular grooves 21 on every two relatively positioned installation cylinders 10. The four corners of every two symmetrically arranged housings 22 are connected by connecting screws 23. It also includes an annular protrusion 24. An annular protrusion 24 is provided on each housing 22. The annular protrusion 24 is adapted to the heat dissipation cylinder 20.

[0071] Specifically, after the heat dissipation cylinder 20 is installed, the two ends of the two adapted outer shells 22 are respectively butted against the annular grooves 21. Through the arrangement of the connecting screws 23, the two outer shells 22 are butted together. Through the arrangement of the annular grooves 21, the outer shell 22 and the two mounting cylinders 10 form an integral body, improving stability. And due to the arrangement of the annular protrusions 24, the contact area with the air is increased, so that the high temperature transmitted by the heat dissipation cylinder 20 can be dissipated more quickly.

[0072] In summary, when docking two conductive cables together, first strip the conductive cables to expose the stranded conductors 1 and the insulating layers 2, and make the end faces of the inner liner layer 3, the filling layer 4 and the sheath layer 5 flat. At this time, docking cylinders 6 are respectively sleeved on the opposite ends of the sheath layers 5 of the two conductive cables. At this time, the fixing rings 8 move to the fixed positions, and the fixing screws 9 are sequentially installed on the fixing rings 8. Then the fixing screws 9 are sequentially screwed until the bottom of the fixing screw 9 abuts against the sheath layer 5, so as to fix the relative positions of the fixing ring 8 and the sheath layer 5, and fix the docking cylinder 6. Then prepare the corresponding mounting cylinders 10, and install the corresponding mounting cylinders 10 on the corresponding docking cylinders 6 by means of threaded connection, and respectively pass the multiple stranded conductors 1 in the corresponding conductive cables through the corresponding mounting holes 12.

[0073] At this time, strip the insulating layer 2 at the end to expose a part of the stranded conductor 1. A conductive joint 13 is sleeved on the end of each stranded conductor 1, and then a crimping tool is used to squeeze the crimping area, so as to firmly fix the conductive joint 13 on the corresponding stranded conductor 1. Then insert the corresponding conductive joint 13 into the corresponding mounting groove 15. At this time, the conductive sheet 14 on the conductive joint 13 enters the conductive chute 18, so that the end of one conductive cable, through the arrangement of the conductive joint 13 and the conductive sheet 14, uses the conductive chute 18 and the connecting conductor 19 to be electrically connected to the other opposite conductive joint 13 to realize current transmission. And when affected by high temperature, the stranded conductor 1 expands, thus pushing the corresponding conductive joint 13 to slide in the conductive cylinder 17. At this time, relative sliding also occurs between the conductive chute 18 and the conductive sheet 14, without affecting normal current transmission.

[0074] Finally, the heat dissipation cylinder 20 is sleeved on the conductive frame 7. The two ends of the two adapted outer shells 22 are respectively butted against the annular grooves 21. Through the arrangement of the connecting screws 23, the two outer shells 22 are butted together. Through the arrangement of the annular grooves 21, the outer shell 22 and the two mounting cylinders 10 form an integral body, improving stability. And due to the arrangement of the annular protrusions 24, the contact area with the air is increased, so that the high temperature transmitted by the heat dissipation cylinder 20 can be dissipated.

[0075] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A low-voltage power cable, comprising a plurality of conductive cables, each of the conductive cables comprising a plurality of stranded conductors (1), and an insulating layer (2) is coated outside each of the plurality of stranded conductors (1); the plurality of stranded conductors (1) are all arranged inside a lining layer (3), a filling layer (4) is filled and arranged between the lining layer (3) and the plurality of insulating layers (2), and a sheath layer (5) is coated outside the lining layer (3), characterized in that, It also includes: A docking cylinder (6), and each end of the sheath layer (5) is slidably sleeved with the docking cylinder (6); A fixing component, which is arranged on each of the plurality of docking cylinders (6) and is used to fix the position of the docking cylinder (6); The fixing component includes: A fixing ring (8), which is fixedly installed on each docking cylinder (6), and the inner side wall of the fixing ring (8) is in sliding contact with the sheath layer (5); Fixing screws (9), and a plurality of the fixing screws (9) are threadedly arranged on each fixing ring (8) at equal angles in a circumferential shape, and the bottom ends of the fixing screws (9) are in contact with the sheath layer (5); A wire laying component, which is installed on the docking cylinder (6) and is used to separate multiple stranded conductors (1); The wire laying component includes: An installation cylinder (10), which is arranged on each docking cylinder (6), and the connection mode between the installation cylinder (10) and the docking cylinder (6) is a threaded connection, and the thread directions of every two relatively positioned installation cylinders (10) are opposite; A wire laying plate (11), and the wire laying plate (11) is rotatably installed inside each installation cylinder (10); Installation holes (12), and a plurality of the installation holes (12) are opened on each wire laying plate (11) at equal angles in a circumferential shape, and the multiple stranded conductors (1) correspond to the multiple installation holes (12) one by one, and the installation holes (12) are in sliding contact with the insulating layer (2); A joint component, and the joint component is arranged at the end of each stranded conductor (1); A conductive frame (7), and the conductive frame (7) is arranged between every two relatively positioned docking cylinders (6), and the conductive frame (7) is electrically connected to the joint component; A conductive component, and the conductive component is installed on each conductive frame (7) and is used for conducting electricity; A heat dissipation component, and the heat dissipation component is installed on each conductive component and is used for heat dissipation.

2. A low-voltage power cable according to claim 1, characterized in that, The joint component includes: A conductive joint (13), and the conductive joint (13) is arranged at the end of each stranded conductor (1), and both ends of the conductive joint (13) are set as crimping areas, and the middle part is set as a conductive area; Conductive sheets (14), and a plurality of the conductive sheets (14) are fixedly installed on each conductive area at equal angles in a circumferential shape.

3. A low-voltage power cable according to claim 2, characterized in that, The conductive component includes: Installation grooves (15), and a plurality of the installation grooves (15) are opened at equal angles in a circumferential shape at both ends of each conductive frame (7), and the multiple installation grooves (15) correspond to the multiple stranded conductors (1) one by one; Docking grooves (16), and the docking grooves (16) are opened between every two relatively positioned installation grooves (15); A conductive part, and the conductive part is installed in each installation groove (15) and is used for electrically connecting two relatively positioned stranded conductors (1).

4. A low-voltage power cable according to claim 3, characterized in that, The conductive part includes: A conductive cylinder (17), and the conductive cylinder (17) is detachably installed inside each docking groove (16), and the multiple conductive cylinders (17) correspond to the multiple conductive joints (13) one by one; Conductive sliding grooves (18), a plurality of the conductive sliding grooves (18) are circumferentially and equiangularly formed inside each of the conductive cylinders (17), the plurality of the conductive sliding grooves (18) correspond to the plurality of the conductive sheets (14) one by one, and the conductive sheets (14) are slidably connected to the conductive sliding grooves (18); Connecting conductors (19), the connecting conductors (19) are fixedly installed inside each of the installation grooves (15), and two ends of the connecting conductors (19) are fixedly connected to two relatively positioned conductive cylinders (17) respectively.

5. A low-voltage power cable according to claim 4, characterized in that, The heat dissipation assembly includes: Heat dissipation cylinders (20), the heat dissipation cylinders (20) are detachably installed outside each of the conductive frames (7); Annular grooves (21), the annular grooves (21) are formed at the ends of each of the installation cylinders (10); A protection part, the protection part is installed between the annular grooves (21) on every two relatively positioned installation cylinders (10) for protecting the conductive frame (7).

6. A low-voltage power cable according to claim 5, characterized in that, The protection part includes: Housings (22), two of the housings (22) are symmetrically and detachably installed between the annular grooves (21) on every two relatively positioned installation cylinders (10); Connecting screws (23), the four corners of every two symmetrically arranged housings (22) are connected by the connecting screws (23).

7. A low-voltage power cable according to claim 6, characterized in that, An annular protrusion (24) is further included, the annular protrusion (24) is provided on each of the housings (22), and the annular protrusion (24) is adapted to the heat dissipation cylinder (20).

Images