Composite cable and preparation method thereof

Abstract

The invention relates to the technical field of cables, and provides a composite cable and a preparation method thereof.The composite cable comprises an elastic support, an elastic wire, a first wire core and a cooling pipeline, the elastic support is of a star-shaped structure, and the elastic support is provided with a plurality of grooves; the elastic wire is wound on the elastic support, the elastic wire comprises an abutting part abutting against the elastic support and a suspended bearing part, the bearing part is coated with a metal sheet, and a heat insulation layer is arranged on the inner side of the metal sheet; a plurality of elastic wires are arranged at intervals along the axis of the elastic bracket; the first wire core is attached to the bearing part and presses the bearing part into the groove, and a gap is reserved between the bearing part and the elastic support. And the cooling pipeline is arranged in the elastic bracket. According to the invention, by arranging the elastic wire, the first wire core can be borne, and the bearing part of the elastic wire is used for buffering by virtue of elastic force, so that the problems of deformation and damage of the wire core are prevented; and after the pressure is eliminated, the wire core can be reset by virtue of the elastic force of the elastic wire, so that the application stability of the cable is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and in particular to a composite cable and a preparation method thereof. Background Art

[0002] Composite cable is a cable system composed of multiple different types of cables, which usually integrate cables with different functions to simplify wiring, reduce space occupancy and improve installation efficiency. The design of composite cables usually combines different signal transmission lines, power lines, control lines, shielding lines, etc. into one cable according to application requirements. It is widely used in various industries such as industrial automation, communications, construction, automobiles and energy. Composite cables are usually designed with certain protective layers, such as shielding layers and insulation layers, which help improve the cable's anti-interference ability, wear resistance, corrosion resistance and other characteristics, thereby improving the reliability of the system.

[0003] The invention patent with the existing authorization announcement number CN110689997B discloses a composite cable that suppresses both the deformation of the cross-sectional shape of the composite cable as a whole and the deformation of the cross-sectional shape of the wires contained in the composite cable. The composite cable has: a plurality of first wires; a shielded wire, which is formed by setting a shielding layer around a twisted pair formed by twisting a plurality of second wires; a sheath, which is set around a wire assembly formed by twisting the first wires and the shielded wires; a first linear interposer, which is filled between the twisted pair and the shielding layer; and a second linear interposer, which is filled between the wire assembly and the sheath. The first wires and the shielded wires are twisted along a first direction, and the second wires are also twisted along the first direction.

[0004] For example, the composite cable in the above technical solution adopts a twisted wire structure, and when under pressure, the degree of twisting becomes loose, and buffering is achieved by the filled linear intermediary; however, the cable with this structure has good buffering and resetting effects against bending and torsion, but poor resistance to impact; especially when the first wire and the shielded wire are in contact with each other, the cable will have high rigidity, which will easily damage the internal core conductor after the impact; especially when using a core conductor formed by twisting multiple bare stranded wires, the bare stranded wire is prone to deformation and cannot be reset later, and the corresponding functional layers such as the external insulation layer and the shielding layer will also be deformed, resulting in local thinning and easy damage; at the same time, more materials are used in production. Summary of the invention

[0005] In view of this, the present invention proposes a composite cable that is resistant to impact and torsion and a preparation method thereof, so as to solve the problem that the existing composite cable has poor impact resistance and cannot be reset after deformation.

[0006] The technical solution of the present invention is achieved in this way:

[0007] In one aspect, the present invention provides a composite cable, comprising an elastic support, an elastic wire, a first wire core and a cooling pipeline, wherein:

[0008] The elastic bracket is in a star-shaped structure, and the elastic bracket has a plurality of grooves;

[0009] The elastic wire is wound on the elastic bracket, and the elastic wire includes a supporting part for supporting the elastic bracket, and a suspended bearing part, the bearing part is covered with a metal sheet, and a heat insulating layer is arranged inside the metal sheet;

[0010] A plurality of elastic wires are arranged at intervals along the axis of the elastic support;

[0011] The first wire core is attached to the bearing part, and the bearing part is pressed into the groove, and a gap is left between the bearing part and the elastic bracket;

[0012] The cooling pipeline is arranged inside the elastic support, and the cooling pipeline is used to circulate a cooling medium to cool the elastic line.

[0013] On the basis of the above technical solution, preferably, it further comprises an elastic body and a second wire core, and the elastic bracket has a protrusion located between the two grooves, wherein:

[0014] The elastic body is arranged in a fitting manner with the protrusion, and the elastic body has a first limiting groove away from the protrusion, and second limiting grooves located on both sides;

[0015] The first wire core fits into the second limiting groove;

[0016] The second wire core is fitted in the first limiting groove and the second wire core.

[0017] On the basis of the above technical solution, preferably, the elastic body is a hollow structure, and the elastic body is connected to the protrusion by injection molding or bonding, and fixes the abutting part;

[0018] The diameter of the first core is greater than the diameter of the second core, and the end face circles of the first core and the second core are tangent to the same virtual circle.

[0019] On the basis of the above technical solution, preferably, it further includes a buffer layer, a braided layer, a nylon rope and a first cabling layer, wherein:

[0020] The buffer layer is a foam material and is wrapped around the surface of the first wire core and the second wire core;

[0021] The braided layer is wound on the surface of the buffer layer to shape the buffer layer and improve the strength of the composite cable;

[0022] The nylon rope is arranged between the first wire core and the second wire core and is covered by a buffer layer;

[0023] The cabling layer is arranged on the surface of the braided layer.

[0024] On the basis of the above technical solution, preferably, it further comprises ribs and steel strands, wherein the ribs are arranged on the outside of the first cabling layer, and the ribs correspond to the first wire cores;

[0025] An arc groove is arranged on one side of the rib away from the first cabling layer to form two convex ribs, and the convex ribs correspond to the buffer layer;

[0026] The convex rib is a hollow structure, and the steel strand is arranged inside the convex rib.

[0027] On the basis of the above technical solution, preferably, it further includes a coating layer and a second cabling layer, and the second wire core includes a conductor and an insulating layer, wherein:

[0028] The coating layer surrounds the first wire core and the second wire core;

[0029] The surface of the conductor is covered with an insulating layer, and the insulating layer and the covering layer are an integrated structure;

[0030] The second cabling layer is disposed on the surface of the covering layer.

[0031] On the basis of the above technical solution, preferably, the groove of the elastic bracket, and the first limiting groove and the second limiting groove of the elastic body are arc-shaped grooves;

[0032] The arc radius of the cross section of the groove is smaller than the arc radius of the cross section of the second limiting groove;

[0033] The cross-sectional arc radius of the first limiting groove is smaller than the cross-sectional arc radius of the groove.

[0034] On the basis of the above technical solution, preferably, it further comprises a heat conductor, and the cooling pipeline is connected with the inner cavity of the elastic body, wherein:

[0035] The heat conductor includes a first heat conducting portion fitted in the groove, and a second heat conducting portion penetrating the elastic bracket and extending into the cooling pipeline;

[0036] The heat conductor is spaced apart from the elastic wire.

[0037] In another aspect, the present invention provides a method for preparing the above-mentioned composite cable, comprising the following steps:

[0038] S1. Injection molding is performed on the surface of the cooling pipeline to form an elastic bracket;

[0039] S2, winding the elastic wire on the surface of the elastic support;

[0040] S3, arranging the first wire core on the bearing portion of the elastic wire;

[0041] S4, winding the first wire core by braiding the material to apply pressure to the first wire core, so that the bearing portion is sunken into the groove to complete the bundle diameter;

[0042] S5. A cable layer is arranged on the outside of the braided material.

[0043] In another aspect, the present invention provides another method for preparing the above-mentioned composite cable, comprising the following steps:

[0044] S1. Injection molding is performed on the surface of the cooling pipeline to form an elastic bracket;

[0045] S2, winding the elastic wire on the surface of the elastic support;

[0046] S3, arranging the first wire core on the bearing portion of the elastic wire, and applying a certain pressure to make the bearing portion concave into the groove;

[0047] S4, forming an integrated coating layer and an insulating layer simultaneously by extrusion, wherein the insulating layer covers the second wire core, and the coating layer covers the first wire core and the second wire core;

[0048] S5. A cable layer is arranged outside the coating layer.

[0049] The composite cable and the preparation method thereof of the present invention have the following beneficial effects compared with the prior art:

[0050] (1) By setting a star-shaped elastic bracket and winding an elastic wire on the elastic bracket, the bearing part of the elastic wire will be in a suspended state. When the first core is laid, the first core can be supported. After the first core is set, there is a gap between the bearing part and the elastic bracket. In this way, when the cable is subsequently impacted, the bearing part of the elastic wire will be buffered by elastic force. Even if the bearing part contacts the elastic bracket, it can be further buffered by the deformation of the elastic bracket, thereby preventing the core from being deformed and damaged. After the pressure applied to the cable is eliminated, the core can be reset by the elastic force of the elastic wire, thereby ensuring the stability of the cable application and using less materials in production.

[0051] (2) By arranging a cooling pipeline in the elastic bracket, and coating the bearing part with a metal sheet, and arranging an insulating layer on the inner side of the metal sheet, the heat of the wire core will be transferred to the metal sheet without affecting the elastic wire, which can ensure the service life of the elastic wire. When the cooling medium flows through the cooling pipeline, the temperature of the elastic bracket is reduced to absorb heat, thereby taking away the heat inside the cable;

[0052] (3) By arranging an elastic body on the protrusion of the elastic bracket, the second core can be arranged by relying on the elastic body, thereby improving the transmission capacity of the composite cable; the elastic body simultaneously supports the second core and the first core, and the elastic body is a hollow structure, so it also has good buffering and resetting capabilities, and can ensure the structural stability of the cable;

[0053] (4) By providing a buffer layer covering the first core and the second core inside the cable, the impact resistance of the cable can be further improved. Since the buffer layer is a foamed material, it can cover the nylon rope and rely on the nylon rope to improve the tensile strength of the cable, which further improves the structural strength of the cable;

[0054] (5) By arranging ribs on the cabling layer of the cable, and the ribs have protruding ribs, when the cable is subjected to impact and extrusion, the applied force will not be directly transmitted to the first core, but will first be transmitted from the ribs to the buffer layer, and then from the first core to the elastic wire, which improves the buffering capacity of the cable and can effectively avoid the problem that the core cannot be reset due to deformation caused by impact when a core composed of multiple bare strands is used;

[0055] (6) A heat conductor is provided, and the heat conductor is directly extended into the cooling pipeline through the second heat conducting part. After the heat conductor absorbs the heat of the wire core, the heat can be quickly transferred to the cooling pipeline, and the heat is taken away by the cooling medium, which can effectively improve the heat dissipation capacity of the cable. At the same time, the cooling pipeline is connected with the inner cavity of the elastomer, which can synchronously realize the transmission of the cooling medium by relying on the inner cavity of the elastomer, thereby improving the heat dissipation capacity of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0057] Figure 1 is a cross-sectional view of the composite cable of the present invention;

[0058] Figure 2 is a perspective view of a composite cable of the present invention;

[0059] Figure 3 It is a cross-sectional view of the connection structure of the elastic support, elastic wire, elastic body and heat conductor of the composite cable of the present invention;

[0060] Figure 4 It is a three-dimensional diagram of the connection structure of the elastic support, elastic wire, elastic body and heat conductor of the composite cable of the present invention;

[0061] Figure 5 is a cross-sectional view of a composite cable in Embodiment 2 of the present invention;

[0062] Figure 6 is a stereogram of a composite cable in Embodiment 2 of the present invention;

[0063] Figure 7It is a schematic diagram showing the tangency between the first core and the second core of the composite cable of the present invention;

[0064] In the figure: 1, elastic bracket; 101, groove; 102, protrusion; 2, elastic line; 21, supporting part; 22, bearing part; 3, first core; 4, cooling pipeline; 5, elastic body; 501, first limiting groove; 502, second limiting groove; 6, second core; 61, conductor; 62, insulating layer; 7, buffer layer; 8, braided layer; 9, nylon rope; 10, first cabling layer; 11, rib; 111, convex rib; 1101, arc groove; 12, steel strand; 13, coating layer; 14, second cabling layer; 15, heat conductor; 151, first heat conducting part; 152, second heat conducting part. DETAILED DESCRIPTION

[0065] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] like Figures 1 to 6 As shown, the composite cable of the present invention includes an elastic support 1, an elastic wire 2, a first core 3, a cooling pipeline 4, an elastomer 5, a second core 6, a buffer layer 7, a braided layer 8, a nylon rope 9, a first cabling layer 10, ribs 11, steel strands 12, a coating layer 13, a second cabling layer 14 and a heat conductor 15.

[0067] Embodiment 1:

[0068] like Figures 1 to 4 As shown, the composite cable of this embodiment includes an elastic support 1, an elastic wire 2, a first core 3, a cooling pipeline 4, an elastomer 5, a second core 6, a buffer layer 7, a braided layer 8, a nylon rope 9, a first cabling layer 10, ribs 11, steel strands 12 and a heat conductor 15.

[0069] like Figures 1 to 4 As shown, the elastic bracket 1 is a star-shaped structure, and the elastic bracket 1 has a plurality of grooves 101; the elastic wire 2 is wound on the elastic bracket 1, and the elastic wire 2 includes a supporting portion 21 supporting the elastic bracket 1, and a suspended bearing portion 22, and the bearing portion 22 is covered with a metal sheet, and an insulating layer is provided inside the metal sheet; a plurality of elastic wires 2 are provided at intervals along the axis of the elastic bracket 1; the first wire core 3 is attached to the bearing portion 22, and the bearing portion 22 is pressed into the groove 101, and a gap is left between the bearing portion 22 and the elastic bracket 1;

[0070] As in the above structure, the elastic bracket 1 is provided with a plurality of grooves 101 to form a star-shaped structure, so that when the elastic wire 2 is wound around the elastic bracket 1, the elastic wire 2 will form a supporting portion 21 in contact with the elastic bracket 1, and a suspended bearing portion 22;

[0071] When the first wire core 3 is arranged, the first wire core 3 fits the bearing portion 22 of the elastic wire 2, and pressure is applied to the bearing portion 22 so that the bearing portion 22 bends into the groove 101, and the bearing portion 22 cannot contact the elastic bracket 1. In this way, when the first wire core 3 is subjected to impact pressure, the bearing portion 22 still has a stretching displacement space, thereby achieving a buffering effect to avoid cable damage; and after the external pressure disappears, the bearing portion 22 can rely on elasticity to reset the first wire core 3, so as to avoid the problem of affecting power or signal transmission due to the inability of the first wire core 3 to reset;

[0072] Specifically, a plurality of elastic wires 2 are arranged at intervals along the axial direction of the elastic bracket 1, so that the buffering capacity of the cable can be adjusted by adjusting the density of the elastic wires 2, and the weight of the cable can also be reduced;

[0073] In some embodiments, the elastic wire 2 may also be provided as one piece, which is densely wound or wound with a large spacing on the elastic support 1;

[0074] Specifically, the bearing portion 22 of the elastic wire 2 is sleeved with a metal sheet, and the metal sheet can be set as a cylindrical structure so that it has a certain bending ability; at the same time, an insulating layer, such as an insulating coating, is provided on the inner side of the metal sheet, which can prevent the heat generated by the first wire core 3 from being transferred to the elastic wire 2 through the metal sheet, thereby preventing the elastic wire 2 from aging faster and extending the service life of the elastic wire 2.

[0075] At the same time, relying on the above-mentioned molding structure, the first cores 3 do not need to be twisted, and in cables of the same length, compared with twisted cables, the amount of material used is reduced and the structural strength is ensured.

[0076] like Figure 1 and Figure 2 As shown, the cooling pipeline 4 is arranged inside the elastic support 1, and the cooling pipeline 4 is used to circulate the cooling medium to cool the elastic line 2;

[0077] As shown in the above structure, a cooling pipe 4 is arranged inside the elastic bracket 1, which is used to circulate the cooling medium. The elastic bracket 1 is made of a heat-conducting material, so that the elastic bracket 1 has a lower temperature, thereby reducing the internal temperature of the cable; at the same time, the metal sheet of the bearing part 22 has good heat absorption and heat dissipation capabilities, assisted by the setting of the insulation layer, which can reduce the influence of temperature on the bearing part 22 while improving the heat dissipation efficiency of the first core 3.

[0078] like Figure 1 and Figure 4 As shown, the elastic bracket 1 has a protrusion 102 located between the two grooves 101, wherein the elastic body 5 is arranged in contact with the protrusion 102, and the elastic body 5 has a first limiting groove 501 away from the protrusion 102, and second limiting grooves 502 located on both sides; the first wire core 3 is in contact with the second limiting groove 502; the second wire core 6 is in contact with the first limiting groove 501 and the second wire core 6;

[0079] As in the above structure, the elastic bracket 1 is provided with a groove 101 and a protrusion 102 is formed at the same time, and the protrusion 102 provides support for the elastic line 2;

[0080] When the elastic body 5 is set, the elastic body 5 is set on the protrusion 102, and the elastic body 5 is provided with a first limiting groove 501 and a second limiting groove 502; thus, when the first wire core 3 is set, the first wire core 3 will fit into the second limiting groove 502 after applying pressure to the bearing portion 22 of the elastic wire 2. At this time, when the second wire core 6 is set, the second wire core 6 will fit into the first limiting groove 501, and the two sides will abut against the adjacent second wire core 6, so as to realize the positioning of the second wire core 6;

[0081] In this structure, the first core 3 is buffered by the elastic wire 2, and the second core 6 is buffered by the elastomer 5. The first core 3 and the second core 6 are arranged in plurality at intervals and in a ring array, so that a buffer structure is formed on the inside, which can not only resist impact, but also effectively improve the stability of the cable when used in a torsion or bending state, and has good structural performance.

[0082] like Figure 1 and Figure 4 As shown, the elastic body 5 is a hollow structure, and the elastic body 5 is connected to the protrusion 102 by injection molding or bonding, and fixes the abutting portion 21; the diameter of the first wire core 3 is greater than the diameter of the second wire core 6, and the end face circles of the first wire core 3 and the second wire core 6 are tangent to the same virtual circle;

[0083] As in the above structure, the elastic body 5 is set as a hollow structure, which can be made of rubber material by extrusion, so as to provide a good elastic recovery effect; in this structure, the elasticity can be controlled by controlling the wall thickness of the elastic body 5;

[0084] When the elastic body 5 is provided, the elastic body 5 can also be directly injection molded on the protrusion 102 of the elastic bracket 1 to fix the abutting portion 21 and improve the convenience of integration. At this time, the elastic bracket 1 and the elastic body are an integrated structure, which can ensure the stability of the overall structure.

[0085] The diameter of the first wire core 3 is larger than the diameter of the second wire core 6, so that the inner side of the second wire core 6 can accommodate an elastic body 5 of a relatively suitable size, thereby making full use of the space;

[0086] like Figure 7 As shown, the end face circles of the first core 3 and the second core 6 are tangent to the same virtual circle;

[0087] This structural setting makes the layout structure of the first core 3 and the second core 6 of the cable more regular, which is convenient for the subsequent setting of functional layers such as shielding layer and fireproof layer on the outside.

[0088] like Figure 1 and Figure 2 As shown, the buffer layer 7 is a foamed material and is wrapped around the surface of the first core 3 and the second core 6; the braided layer 8 is wound around the surface of the buffer layer 7 to shape the buffer layer 7 and improve the strength of the composite cable; the nylon rope 9 is arranged between the first core 3 and the second core 6 and is covered by the buffer layer 7; the first cabling layer 10 is arranged on the surface of the braided layer 8;

[0089] As in the above structure, in order to fill the gap between the first core 3 and the second core 6, a foaming material is used to fill the gap to form a buffer layer 7, thereby further improving the buffering effect of the cable;

[0090] Specifically, after the first core 3 and the second core 6 are integrated into the cable, the cable is passed through a cylindrical mold, and a foaming material is injected into the cylindrical mold to form a buffer layer 7, which can ensure that the surface of the buffer layer 7 is relatively regular; in order to prevent the buffer layer 7 from adhering to the mold and affecting the normal feeding of the cable, a non-sticky foaming material is required for filling;

[0091] Furthermore, when the buffer layer 7 is provided, the nylon rope 9 is provided to be fed synchronously with the first wire core 3 and the second wire core 6, so that the buffer layer 7 can cover the nylon rope 9, thereby relying on the nylon rope 9 to improve the tensile strength of the cable;

[0092] After the buffer layer 7 is set for filling, in order to shape the cable, the braided layer 8 is used to cover the buffer layer 7; since the foam material has a relatively soft characteristic, and the braided material feeding length of the braided layer 8 is constant per unit time, the buffer layer 7 can be shaped so that the buffer layer 7 shrinks appropriately, reduces softness, and enhances elasticity;

[0093] Finally, a first cabling layer 10 is arranged on the outside of the braided layer 8 to form a cable. The first cabling layer 10 can be a single-layer or multi-layer structure. When a multi-layer structure is adopted, it can be arranged as a shielding layer, a fireproof layer, an armor layer and other functional layers.

[0094] like Figures 1 to 4 As shown, the rib 11 is arranged on the outside of the first cabling layer 10, and the rib 11 corresponds to the first wire core 3; an arc groove 1101 is arranged on the side of the rib 11 away from the first cabling layer 10 to form two convex ribs 111, and the convex rib 111 corresponds to the buffer layer 7; the convex rib 111 is a hollow structure, and the steel strand 12 is arranged in the convex rib 111;

[0095] As in the above structure, in order to further improve the impact resistance of the cable, ribs 11 are also provided on the outer side of the first cabling layer 10;

[0096] In this cable, the diameter of the second core 6 is relatively small, and the elastic body 5 inside it can provide a good buffering effect, so the rib 11 is arranged corresponding to the first core 3;

[0097] The rib 11 is provided with an arc groove 1101, which corresponds to the first core 3 and forms two convex ribs 111. When the cable is squeezed, the convex rib 111 contacts the pressure object, and the applied force is not directly transmitted to the first core 3, but first transmitted from the convex rib 111 to the buffer layer 7, and then the first core 3 is transmitted to the elastic wire 2. This improves the buffering capacity of the cable and can effectively avoid the problem that the core is deformed and cannot be reset when a core composed of multiple bare strands is used;

[0098] Furthermore, the convex rib 111 is configured as a hollow structure, which can improve the buffering capacity, and after the steel strand 12 is arranged in the convex rib 111, the tensile strength of the cable can be improved;

[0099] In some embodiments, the steel strand 12 may also be replaced by non-metallic materials such as nylon rope.

[0100] like Figure 3 and Figure 4 As shown, the groove 101 of the elastic bracket 1, and the first limiting groove 501 and the second limiting groove 502 of the elastic body 5 are all arc-shaped grooves; the cross-sectional arc radius of the groove 101 is smaller than the cross-sectional arc radius of the second limiting groove 502; the cross-sectional arc radius of the first limiting groove 501 is smaller than the cross-sectional arc radius of the groove 101;

[0101] As in the above structure, the cross-sectional arc radius of the groove 101 of the elastic bracket 1 is smaller than the cross-sectional arc radius of the second limiting groove 502, that is, smaller than the diameter of the first wire core 3, so that the second limiting groove 502 can be closely attached to the first wire core 3, and the groove 101 has enough space to accommodate the curved bearing portion 22;

[0102] At the same time, when the first wire core 3 is subjected to external force, it is not only the bearing portion 22 that performs buffering. As the first wire core 3 moves toward the bottom of the groove 101, due to the large diameter of the first wire core 3, pressure is applied to the protrusions 102 on both sides. At this time, the protrusions 102 on both sides also achieve a buffering effect, which improves the buffering performance of the cable;

[0103] The first limiting groove 501 has a minimum cross-sectional arc radius, so as to fit the second wire core 6 .

[0104] like Figure 3As shown, the cooling pipeline 4 is connected to the inner cavity of the elastic body 5, wherein the heat conductor 15 includes a first heat conducting portion 151 that fits the groove 101, and a second heat conducting portion 152 that penetrates the elastic bracket 1 and extends into the cooling pipeline 4; the heat conductor 15 is spaced apart from the elastic wire 2;

[0105] As in the above structure, Figure 3 The dotted line shown in the figure is the connecting flow channel between the cooling pipeline 4 and the elastic body 5, which realizes the connection between the cooling pipeline 4 and the elastic body 5. This is applied in some occasions with high heat dissipation requirements. At this time, the cooling pipeline 4 can be used as the cooling medium input pipeline, and input into the elastic body 5 through the connecting flow channel, and the elastic body 5 is used as the cooling medium output flow channel to improve the heat dissipation effect and simultaneously realize the heat dissipation of the second core 6;

[0106] In this structure, the cooling pipe 4 and the elastic body 5 are blocked at one end each, thereby realizing a reflux cooling structure;

[0107] Furthermore, in order to improve the heat dissipation effect, the elastic bracket 1 is integrated with a heat conductor 15, wherein the first heat conducting portion 151 of the heat conductor 15 is arranged in contact with the groove 101, and one end of the second heat conducting portion 152 is connected to the first heat conducting portion 151, and the other end directly extends into the cooling pipeline 4 to contact the cooling medium;

[0108] As mentioned above, the heat conductor 15 is made of metal material, which can absorb heat better through the second heat conducting part 152 and realize heat exchange with the liquid cooling medium by relying on the first heat conducting part 151, thereby improving the heat exchange efficiency and realizing cooling of the cable.

[0109] The method for preparing the above-mentioned composite cable comprises the following steps:

[0110] S1, performing injection molding on the surface of the cooling pipe 4 to form an elastic bracket 1;

[0111] S2, winding the elastic wire 2 on the surface of the elastic support 1;

[0112] S3, arranging the first wire core 3 on the bearing portion 22 of the elastic wire 2;

[0113] S4, winding the first wire core 3 with the braided material to apply pressure to the first wire core 3, so that the bearing portion 22 is sunken into the groove 101, and the bundle diameter is completed;

[0114] S5. A cable layer is arranged on the outside of the braided material.

[0115] Embodiment 2:

[0116] The composite cable of this embodiment includes an elastic support 1, an elastic wire 2, a first core 3, a cooling pipeline 4, an elastomer 5, a second core 6, a buffer layer 7, a nylon rope 9, a rib 11, a steel strand 12, a heat conductor 15, a coating layer 13 and a second cabling layer 14.

[0117] In this cable structure, the structural layout of the elastic support 1, elastic wire 2, first wire core 3, cooling pipeline 4, elastic body 5, second wire core 6, buffer layer 7, nylon rope 9, ribs 11, steel strand 12 and heat conductor 15 is the same as that in the first embodiment.

[0118] like Figure 5 and Figure 6 As shown, the second core 6 includes a conductor 61 and an insulating layer 62, wherein the coating layer 13 surrounds the first core 3 and the second core 6; the surface of the conductor 61 is coated with the insulating layer 62, and the insulating layer 62 and the coating layer 13 are an integrated structure; the second cabling layer 14 is arranged on the surface of the coating layer 13;

[0119] As described above, in the present cable structure, the second core 6 is not provided separately, and the outer insulating layer 62 and the coating layer 13 are integrally formed by extrusion, and the conductor 61 is integrated at the same time, and directly contacts the buffer layer 7 by the coating layer 13;

[0120] The coating layer 13 is an annular structure. In some embodiments, the coating layer 13 can also be set to a multi-section structure. The cross-section of each section of the coating layer 13 is an arc-shaped structure. An insulating layer 62 is integrated on each section of the coating layer 13 to accommodate the conductor 61. Subsequently, a second cabling layer 14 is set for coating to fix the multiple sections of the coating layer 13 and improve the cable strength.

[0121] The method for preparing the above-mentioned composite cable comprises the following steps:

[0122] S1, performing injection molding on the surface of the cooling pipe 4 to form an elastic bracket 1;

[0123] S2, winding the elastic wire 2 on the surface of the elastic support 1;

[0124] S3, arranging the first wire core 3 on the bearing portion 22 of the elastic wire 2, and applying a certain pressure to make the bearing portion 22 concave into the groove 101;

[0125] S4, forming an integrated coating layer 13 and an insulating layer 62 simultaneously by extrusion, wherein the insulating layer 62 covers the second wire core 6, and the coating layer 13 covers the first wire core 3 and the second wire core 6;

[0126] S5. A cable layer is provided outside the coating layer 13. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A composite cable, characterized in that: It comprises an elastic support (1), an elastic wire (2), a first wire core (3) and a cooling pipeline (4), wherein: The elastic support (1) has a star-shaped structure, and the elastic support (1) has a plurality of grooves (101); The elastic wire (2) is wound on the elastic support (1), and the elastic wire (2) comprises a supporting portion (21) supporting the elastic support (1), and a suspended bearing portion (22), the bearing portion (22) is coated with a metal sheet, and a heat insulating layer is provided inside the metal sheet; A plurality of elastic wires (2) are arranged at intervals along the axis of the elastic bracket (1); The first wire core (3) fits the bearing portion (22), and the bearing portion (22) is pressed into the groove (101), with a gap left between the bearing portion (22) and the elastic bracket (1); The cooling pipeline (4) is arranged inside the elastic support (1), and the cooling pipeline (4) is used to circulate a cooling medium to reduce the temperature of the elastic wire (2).

2. The composite cable according to claim 1, characterized in that: It also includes an elastic body (5) and a second wire core (6), the elastic bracket (1) having a protrusion (102) located between the two grooves (101), wherein: The elastic body (5) is arranged in contact with the protrusion (102), and the elastic body (5) has a first limiting groove (501) away from the protrusion (102), and second limiting grooves (502) located on both sides; The first wire core (3) fits into the second limiting groove (502); The second wire core (6) fits the first limiting groove (501) and the second wire core (6).

3. The composite cable according to claim 2, characterized in that: The elastic body (5) is a hollow structure, and the elastic body (5) is connected to the protrusion (102) by injection molding or bonding, and fixes the abutting portion (21); The diameter of the first wire core (3) is greater than the diameter of the second wire core (6), and the end face circles of the first wire core (3) and the second wire core (6) are tangent to the same virtual circle.

4. The composite cable according to claim 2, characterized in that: It also includes a buffer layer (7), a braided layer (8), a nylon rope (9) and a first cabling layer (10), wherein: The buffer layer (7) is a foaming material and is coated on the surface of the first wire core (3) and the second wire core (6); The braided layer (8) is wound on the surface of the buffer layer (7) to shape the buffer layer (7) and improve the strength of the composite cable; The nylon rope (9) is arranged between the first wire core (3) and the second wire core (6), and is covered by the buffer layer (7); The first cabling layer (10) is arranged on the surface of the braided layer (8).

5. The composite cable according to claim 4, characterized in that: It also includes ribs (11) and steel strands (12), wherein the ribs (11) are arranged on the outside of the first cabling layer (10), and the ribs (11) correspond to the first wire cores (3); An arc-shaped groove (1101) is provided on a side of the rib (11) away from the first cabling layer (10) to form two convex ribs (111), and the convex ribs (111) correspond to the buffer layer (7); The convex rib (111) is a hollow structure, and the steel strand (12) is arranged inside the convex rib (111).

6. The composite cable according to claim 2, characterized in that: It also includes a coating layer (13) and a second cabling layer (14), the second core (6) includes a conductor (61) and an insulating layer (62), wherein: The coating layer (13) surrounds the first wire core (3) and the second wire core (6); The surface of the conductor (61) is coated with the insulating layer (62), and the insulating layer (62) and the coating layer (13) are an integrated structure; The second cabling layer (14) is arranged on the surface of the coating layer (13).

7. The composite cable according to any one of claims 2 to 6, characterized in that: The groove (101) of the elastic bracket (1), and the first limiting groove (501) and the second limiting groove (502) of the elastic body (5) are all arc-shaped grooves; The cross-sectional arc radius of the groove (101) is smaller than the cross-sectional arc radius of the second limiting groove (502); The cross-sectional arc radius of the first limiting groove (501) is smaller than the cross-sectional arc radius of the groove (101).

8. The composite cable according to any one of claims 2 to 6, characterized in that: It also includes a heat conductor (15), the cooling pipeline (4) is connected to the inner cavity of the elastic body (5), wherein: The heat conductor (15) comprises a first heat conducting portion (151) which fits the groove (101), and a second heat conducting portion (152) which penetrates the elastic bracket (1) and extends into the cooling pipeline (4); The heat conductor (15) is spaced apart from the elastic wire (2).

9. A method for preparing a composite cable according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, performing injection molding on the surface of the cooling pipeline (4) to form the elastic bracket (1); S2, winding the elastic wire (2) on the surface of the elastic support (1); S3, arranging the first wire core (3) on the bearing portion (22) of the elastic wire (2); S4, winding the first wire core (3) with a braided material to apply pressure to the first wire core (3), thereby causing the bearing portion (22) to be recessed into the groove (101), thereby completing the bundle diameter; S5. A cable layer is arranged on the outside of the braided material.

10. A method for preparing the composite cable according to claim 6, characterized in that: The following steps are involved: S1, performing injection molding on the surface of the cooling pipeline (4) to form the elastic bracket (1); S2, winding the elastic wire (2) on the surface of the elastic support (1); S3, arranging the first wire core (3) on the bearing portion (22) of the elastic wire (2), and applying a certain pressure so that the bearing portion (22) is recessed into the groove (101); S4, forming the integral coating layer (13) and the insulating layer (62) simultaneously by extrusion, wherein the insulating layer (62) covers the second wire core (6), and the coating layer (13) covers the first wire core (3) and the second wire core (6); S5. Arrange a cable layer on the outside of the coating layer (13).

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