High-strength tensile oil-resistant wear-resistant flat cable

Abstract

The invention discloses a high-strength tensile oil-resistant wear-resistant flat cable, and particularly relates to the technical field of electric wires and cables, the high-strength tensile oil-resistant wear-resistant flat cable comprises a plurality of power wire cores and a plurality of control wire cores, the plurality of power wire cores and the plurality of control wire cores are wrapped by an insulating layer, and the plurality of insulating layers are wrapped by an outer sheath. According to the invention, through the arrangement of the tensile assembly, when the cable is pulled, the power wire core or the control wire core drives the sealing ring to slide in the sealing groove, so that negative pressure is generated in the sealing groove, and a plurality of movable sleeves drive the power wire core or the control wire core to approach the power wire core or the control wire core with a relatively high stretching degree; according to the cable, stress concentration caused by gaps among the wire cores is reduced, tension is more uniformly distributed on each wire core, the risk that individual wire cores are damaged is reduced, the whole cable can better bear external force together when being subjected to tensile force, and thus the overall tensile strength of the cable is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric wires and cables, and more specifically, to a high-strength, tensile-resistant, oil-resistant, and wear-resistant flat cable. Background Art

[0002] Flat cable, also known as flat cable or flat wire, is a cable product with a special shape. Compared with traditional round cables, flat cables are flatter in appearance and are usually made up of multiple insulated wires arranged in parallel. Flat cables are widely used in industries such as machinery, mining, lifting, and transportation, and are used for power connection and signal transmission control of various mechanical telescopic devices.

[0003] The Chinese patent with application number CN202011073223.2 discloses a flat torsion-resistant communication cable, which belongs to the field of cable technology, including a cable core and a protective sleeve with a flat structure. The cable core is provided with a spiral support frame mounted on an elastic rope, and the wire core is in a group of at least two wire cores, and a group of wire cores is installed on a spiral support frame. Each spiral coil of the spiral support frame is provided with an arc hole corresponding to the group of wire cores, and the arc holes on the corresponding sides of each spiral coil are aligned, and each wire core passes through a row of arc holes on the corresponding side. The arc holes are located on both sides of the radial direction of the spiral support frame. The edges are arcs coaxially arranged with the spiral support frame, and the length of the arc hole corresponding to its arc is greater than the diameter of the wire core; the protective sleeve includes an anti-torsion layer, an aluminum foil isolation layer, a second shielding layer and an outer sheath layer arranged in sequence from the inside to the outside, and the anti-torsion layer is woven from a rubber rope. The invention has excellent anti-torsion performance, and has the advantages of good bending, tensile resistance, wear resistance, and waterproofness, and is also convenient for installation in special occasions.

[0004] Although the flat cable of the above invention has a certain tensile resistance, there are different core diameters inside the flat cable. Cores with larger diameters usually have larger cross-sectional areas, so they can withstand more mechanical stress, while cores with smaller diameters are the opposite. This will cause uneven tension on the cable cores, which may cause the cable cores to be damaged when subjected to tension. In addition, excessive or frequent bending of the cable may cause wear of the insulation layer, reduce insulation performance, increase the risk of short circuits, and cause the cable cores to be squeezed, affecting the electrical performance of the cable cores.

[0005] The present invention provides a high-strength, tensile-resistant, oil-resistant and wear-resistant flat cable, which aims to solve the problem that the cable core is subjected to uneven tension, resulting in the risk of damage to the cable core, and excessive or frequent bending of the cable causes wear of the insulation layer and extrusion of the cable core, affecting the electrical performance of the cable core. Summary of the invention

[0006] The purpose of the present invention is to provide a high-strength, tensile-resistant, oil-resistant and wear-resistant flat cable to solve the problem proposed in the above background technology that the cable core is subjected to uneven tension, resulting in the risk of damage to the cable core, and excessive or frequent bending of the cable causes wear of the insulation layer and extrusion of the cable core, affecting the electrical performance of the cable core.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a high-strength, tensile-resistant, oil-resistant, and wear-resistant flat cable, comprising a power core and a control core, wherein the power core and the control core are provided in multiple numbers, and the multiple power cores and the multiple control cores are each wrapped with an insulating layer, and the multiple insulating layers are wrapped with an outer sheath, and a plurality of tensile components and a plurality of bending protection components are equidistantly provided between the outer sheath and the multiple insulating layers; The tension-resistant assembly comprises an annular support member sleeved between the outer sheath and the plurality of insulating layers, the inner side of the annular support member is provided with movable sleeves having the same number as the insulating layers, and the plurality of movable sleeves are respectively sleeved on the outer walls of the corresponding insulating layers, and are used to adjust the spacing between the plurality of power cores and the plurality of control cores when the plurality of power cores and the plurality of control cores are subjected to tension; The bending protection component includes a support plate arranged between every two adjacent anti-tension components, which is used to cooperate with the anti-tension component to protect the multiple power cores and the multiple control cores when the cable is bent.

[0008] Preferably, a movable groove is provided on the inner side of the annular support member, and the circumferential outer wall of each movable sleeve is fixedly connected to a limit member slidably connected to the inside of the movable groove, and a plug-in member is fixedly connected to the side where each two adjacent limit members are close to each other, and each two adjacent plug-in members can be plugged into each other to form a seal, and a connecting groove that can communicate with each other is provided inside each plug-in member.

[0009] Preferably, a sealing groove is provided inside each of the movable sleeves, the circumferential outer walls of the plurality of insulating layers are fixedly connected with drive rings corresponding to the positions of the movable sleeves, the plurality of drive rings are slidably connected in the corresponding movable sleeves, one side of each drive ring is fixedly connected with a sealing ring slidably connected in the corresponding sealing groove, and each sealing groove is connected to the corresponding connecting groove.

[0010] Preferably, when the power core and the control core are pulled, the insulating layer and the drive ring can drive the sealing ring to slide in the sealing groove, so that negative pressure is generated in the sealing groove.

[0011] Preferably, a plurality of limiting grooves are equidistantly provided inside the outer sheath, a plurality of the annular support members are slidably connected in the corresponding limiting grooves, a plurality of the support plates are arranged along the length direction of the outer sheath, and both ends of the plurality of the support plates are respectively fixedly connected to the side walls of the corresponding two adjacent annular support members.

[0012] Preferably, when the outer sheath is bent, it can drive the support plate to bend, and drive the annular support member to slide in the limiting sliding groove through the support plate.

[0013] Preferably, the multiple power cores and the multiple control cores have different diameters and are arranged in parallel in the outer sheath, the multiple power cores are arranged in parallel at a central position, and the multiple control cores are evenly arranged on both sides of the power insulating core.

[0014] Preferably, the power core and the control core are both a multi-strand twisted soft copper conductor plus aramid wire structure.

[0015] Preferably, the insulating layer and the outer sheath are both made of nitrile composite material.

[0016] Preferably, a plurality of steel strands for improving the tensile strength are arranged in the outer sheath.

[0017] Technical effects and advantages of the present invention: 1. The present invention sets a tensile component. When the cable is pulled, the power core or the control core drives the sealing ring to slide in the sealing groove, so that negative pressure is generated in the sealing groove, and the negative pressure drives the remaining connectors to be further plugged in, so that multiple movable sleeves drive the power core or the control core to approach the power core or the control core with a greater degree of stretching, thereby reducing the stress concentration caused by the gap between the cores, so that the tension is more evenly distributed on each core, reducing the risk of damage to individual cores, so that the entire cable can better bear the external force together when subjected to tensile force, thereby improving the overall tensile strength of the cable; 2. The present invention provides a bending protection component. On the one hand, when the cable bends, the support plate at the bending position of the cable will bend synchronously with the cable. After the support plate is bent, it will drive the annular support member to move in the limiting slide groove, so that multiple power cores and multiple control cores are close to each other, thereby improving the stability of the cable when bending, making the stress distribution of the cable during the bending process more uniform, reducing the stress concentration on a single core, and further reducing the risk of damage to the core. On the other hand, when the cable continues to bend, the support plate drives the annular support member to move to the extreme position in the limiting slide groove, so that the annular support member cannot continue to move, which limits the bending of the support plate and the cable, avoids excessive bending of the cable, and thus protects the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the overall internal structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 3 This is a cross-sectional view of the internal structure of the outer sheath of the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the tensile component of the present invention.

[0022] Figure 5 It is a cross-sectional view of the tensile component structure of the present invention.

[0023] Figure 6 It is a partial structural sectional view of the movable sleeve of the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of the annular support member of the present invention.

[0025] Figure 8 It is a schematic diagram of the matching of the plug connector of the present invention.

[0026] Fig. 9 It is a schematic diagram of the structure of the drive ring and the sealing ring of the present invention.

[0027] The accompanying drawings are marked as follows: 1. power core; 2. control core; 3. insulation layer; 4. outer sheath; 41. steel strand; 5. tensile assembly; 51. annular support; 52. movable sleeve; 53. movable groove; 54. limiting member; 55. connector; 56. connecting groove; 57. sealing groove; 58. drive ring; 59. sealing ring; 6. bending protection assembly; 61. support plate; 62. limiting slide groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in 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.

[0029] Embodiment 1 There are different core diameters inside flat cables. Cores with larger diameters usually have larger cross-sectional areas, so they can withstand more mechanical stress. The opposite is true for cores with smaller diameters, which causes uneven tension on the cable cores and puts the cable cores at risk of damage when subjected to tension.

[0030] refer to Figure 1 and Figure 2 , a high-strength, tensile-resistant, oil-resistant and wear-resistant flat cable according to an embodiment of the present invention comprises a power core 1 and a control core 2, the power core 1 and the control core 2 are both arranged in multiple pieces, the multiple power cores 1 and the multiple control cores 2 are each wrapped with an insulating layer 3, the multiple insulating layers 3 are wrapped with an outer sheath 4, the multiple power cores 1 and the multiple control cores 2 have different diameters and are arranged in parallel in the outer sheath 4, the multiple power cores 1 are arranged in parallel in the central position, and the multiple control cores 2 are evenly arranged on both sides of the power insulating core, the power core 1 and the control core 2 are both multi-strand twisted soft copper conductor plus aramid wire structure, which can ensure the structural stability of the core, thereby increasing the tensile strength of the conductor, the insulating layer 3 and the outer sheath 4 are both made of nitrile composite material, and the nitrile composite has the characteristics of high wear resistance, high flexibility, tear resistance, bending resistance, oil resistance, etc., which improves the service life of the cable, and a plurality of steel strands 41 for improving the tensile strength are arranged in the outer sheath 4 to increase the overall tensile strength of the cable.

[0031] refer to Figure 1-Figure 3 , a plurality of tensile components 5 are equidistantly arranged between the outer sheath 4 and the plurality of insulating layers 3, the tensile components 5 include an annular support 51 sleeved between the outer sheath 4 and the plurality of insulating layers 3, the inner side of the annular support 51 is provided with movable sleeves 52 having the same number as the insulating layers 3, the plurality of movable sleeves 52 are respectively sleeved on the outer walls of the corresponding insulating layers 3, and are used to adjust the spacing between the plurality of power cores 1 and the plurality of control cores 2 when the plurality of power cores 1 and the plurality of control cores 2 are subjected to tension; refer to Figure 5-Figure 9 A movable groove 53 is provided on the inner side of the annular support 51, and a limiter 54 slidably connected to the inside of the movable groove 53 is fixedly connected to the circumferential outer wall of each movable sleeve 52, and a plug-in component 55 is fixedly connected to the side where each two adjacent limiters 54 are close to each other, and each two adjacent plug-in components 55 can be plugged into each other and form a seal, and a connecting groove 56 that can be connected to each other is provided inside each plug-in component 55, and a sealing groove 57 is provided inside each movable sleeve 52, and a plurality of driving rings 58 corresponding to the position of the movable sleeve 52 are fixedly connected to the circumferential outer walls of the multiple insulating layers 3, and the multiple driving rings 58 are slidably connected in the corresponding movable sleeve 52, and a sealing ring 59 slidably connected in the corresponding sealing groove 57 is fixedly connected to one side of each driving ring 58, and each sealing groove 57 is connected to the corresponding connecting groove 56.

[0032] When the power core 1 and the control core 2 are pulled, the sealing ring 59 can be driven to slide in the sealing groove 57 through the insulating layer 3 and the driving ring 58 , so that negative pressure is generated in the sealing groove 57 .

[0033] In actual use, when the cable is pulled, the power core 1 or the control core 2 will be stretched. At this time, the power core 1 or the control core 2 will drive the drive ring 58 to slide in the corresponding movable sleeve 52 through the corresponding insulating layer 3. When sliding, the drive ring 58 will drive the sealing ring 59 to slide in the sealing groove 57, thereby generating negative pressure in the sealing groove 57. The negative pressure will be transmitted to the remaining connectors 55 through the connecting groove 56, thereby driving the remaining connectors 55 to be further plugged in through the negative pressure, so that multiple movable sleeves 52 drive the corresponding power core 1 or control core 2 to approach the power core 1 or control core 2 with a larger degree of stretching under the limiting action of the movable groove 53 and the limiting member 54, thereby reducing the stress concentration caused by the gap between the cores, making the tension more evenly distributed on each core, reducing the risk of damage to individual cores, and enabling the entire cable to better withstand external forces together when subjected to tensile force, thereby improving the overall tensile strength of the cable.

[0034] When the cable is no longer under tension and gradually returns to its initial state, the multiple movable sleeves 52 drive the corresponding power cores 1 or control cores 2 to gradually return to their initial positions, thereby increasing the spacing between the multiple power cores 1 and the multiple control cores 2, which helps to dissipate heat and reduce the operating temperature of the cable.

[0035] To sum up, through the setting of the tensile component 5, when the cable is pulled, the power core 1 or the control core 2 will drive the sealing ring 59 to slide in the sealing groove 57, so that negative pressure is generated in the sealing groove 57, and the negative pressure drives the remaining connectors 55 to be further plugged in, so that multiple movable sleeves 52 drive the power core 1 or the control core 2 to approach the power core 1 or the control core 2 with a greater degree of stretching, reducing the stress concentration caused by the gap between the cores, making the tension more evenly distributed on each core, reducing the risk of damage to individual cores, and allowing the entire cable to better jointly withstand external forces when subjected to tensile force, thereby improving the overall tensile strength of the cable.

[0036] Embodiment 2 During actual use, excessive or frequent bending of the cable will cause wear of the insulation layer, reduce the insulation performance, increase the risk of short circuit, and cause the cable core to be squeezed, affecting the electrical performance of the cable core. Therefore, this embodiment improves the device described in the above embodiment.

[0037] refer to Figure 1-Figure 3A plurality of bending protection components 6 are equidistantly arranged between the outer sheath 4 and the plurality of insulating layers 3. The bending protection components 6 include a support plate 61 arranged between every two adjacent tensile components 5, which is used to cooperate with the tensile component 5 to protect the plurality of power cores 1 and the plurality of control cores 2 when the cable is bent. A plurality of limiting grooves 62 are equidistantly opened inside the outer sheath 4. A plurality of annular support members 51 are slidably connected in the corresponding limiting grooves 62. A plurality of support plates 61 are arranged along the length direction of the outer sheath 4. Both ends of the plurality of support plates 61 are respectively fixedly connected to the side walls of the corresponding two adjacent annular support members 51.

[0038] When the outer sheath 4 bends, it can drive the support plate 61 to bend, and drive the annular support member 51 to slide in the limiting sliding groove 62 through the support plate 61 .

[0039] During actual use, when the cable is bent, the support plate 61 at the bending point of the cable will bend synchronously with the cable. Since the bending radius of the support plate 61 and the outer sheath 4 is different, the deformation degree of the support plate 61 and the outer sheath 4 is different. At this time, after the support plate 61 is bent, it will drive one of the annular support members 51 to move in the limiting slide groove 62. During the movement, the annular support member 51 will drive multiple movable sleeves 52 to move away from the drive ring 58 through the limiting action of the moving groove 53 and the limiting member 54, so that multiple sealing rings 59 slide in the sealing groove 57, so that negative pressure is generated in the sealing groove 57 and the connecting groove 56, thereby driving multiple power cores 1 and multiple control cores 2 to approach each other, thereby improving the stability of the cable when bending, making the stress distribution of the cable during the bending process more uniform, reducing the stress concentration on a single core, and further reducing the risk of damage to the core.

[0040] It should be noted that when the cable continues to bend so that the support plate 61 drives the annular support member 51 to move to the extreme position in the limiting slide groove 62, the annular support member 51 cannot continue to move, and the support plate 61 is limited. At this time, the support plate 61 can limit the bending of the cable. By adjusting the length of the limiting slide groove 62, the moving distance of the annular support member 51 can be changed, so that the limiting timing of the support plate 61 can be adjusted to avoid excessive bending of the cable, thereby protecting the cable.

[0041] Due to the spacing between the outer sheath 4 and the insulating layer 3, on the one hand, the support plate 61 can limit the bending of the cable when the cable is bent, thereby preventing the outer sheath 4 from deforming and squeezing the power core 1 and the control core 2 during the bending process, and preventing the insulating layer 3 from being worn. On the other hand, when the cable is impacted, the support plate 61 can deform and buffer, thereby protecting the cable core and increasing the service life of the cable.

[0042] To summarize, through the setting of the bending protection component 6, on the one hand, when the cable bends, the support plate 61 at the bending point of the cable will bend synchronously with the cable. After the support plate 61 is bent, it will drive the annular support member 51 to move in the limiting slide groove 62, so that multiple power cores 1 and multiple control cores 2 are close to each other, thereby improving the stability of the cable when bending, making the stress distribution of the cable during the bending process more uniform, reducing the stress concentration on a single core, and further reducing the risk of damage to the core. On the other hand, when the cable continues to bend, the support plate 61 drives the annular support member 51 to move to the extreme position in the limiting slide groove 62, so that the annular support member 51 cannot continue to move, which limits the bending of the support plate 61 and the cable, avoids excessive bending of the cable, and thus protects the cable.

[0043] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-strength, tensile-resistant, oil-resistant, and wear-resistant flat cable, comprising a power core (1) and a control core (2), characterized in that: The power line core (1) and the control line core (2) are provided in plurality, the plurality of power line cores (1) and the plurality of control line cores (2) are each wrapped with an insulating layer (3), the plurality of insulating layers (3) are each wrapped with an outer sheath (4), and a plurality of tensile components (5) and a plurality of bending protection components (6) are equidistantly provided between the outer sheath (4) and the plurality of insulating layers (3); The tension-resistant component (5) comprises an annular support member (51) sleeved between the outer sheath (4) and the plurality of insulating layers (3); the inner side of the annular support member (51) is provided with movable sleeves (52) of the same number as the insulating layers (3); the plurality of movable sleeves (52) are respectively sleeved on the outer walls of the corresponding insulating layers (3) and are used to adjust the spacing between the plurality of power cores (1) and the plurality of control cores (2) when the plurality of power cores (1) and the plurality of control cores (2) are subjected to tension; The bending protection component (6) comprises a support plate (61) arranged between every two adjacent tensile components (5) and is used to cooperate with the tensile component (5) to protect the plurality of power cores (1) and the plurality of control cores (2) when the cable is bent.

2. The high-strength, tensile, oil-resistant, and wear-resistant flat cable according to claim 1, characterized in that: A movable groove (53) is provided on the inner side of the annular support member (51); a limiting member (54) slidably connected to the inside of the movable groove (53) is fixedly connected to the circumferential outer wall of each movable sleeve (52); a plug-in member (55) is fixedly connected to each other on the side where each two adjacent limiting members (54) are close to each other; each two adjacent plug-in members (55) can be plugged into each other to form a seal; and a connecting groove (56) that can communicate with each other is provided inside each plug-in member (55).

3. The high-strength, tensile-resistant, oil-resistant, and wear-resistant flat cable according to claim 2, characterized in that: A sealing groove (57) is provided inside each of the movable sleeves (52); the circumferential outer walls of the plurality of insulating layers (3) are fixedly connected with drive rings (58) corresponding to the positions of the movable sleeves (52); the plurality of drive rings (58) are slidably connected in the corresponding movable sleeves (52); one side of each of the drive rings (58) is fixedly connected with a sealing ring (59) slidably connected in the corresponding sealing groove (57); and each of the sealing grooves (57) is connected to the corresponding connecting groove (56).

4. The high-strength, tensile-resistant, oil-resistant, and wear-resistant flat cable according to claim 3, characterized in that: When the power line core (1) and the control line core (2) are pulled, the sealing ring (59) can be driven to slide in the sealing groove (57) through the insulating layer (3) and the driving ring (58), so that negative pressure is generated in the sealing groove (57).

5. The high-strength, tensile-resistant, oil-resistant, and wear-resistant flat cable according to claim 4, characterized in that: A plurality of limiting sliding grooves (62) are equidistantly formed inside the outer sheath (4), and a plurality of the annular support members (51) are slidably connected in the corresponding limiting sliding grooves (62). A plurality of the support plates (61) are arranged along the length direction of the outer sheath (4), and both ends of the plurality of the support plates (61) are respectively fixedly connected to the side walls of two adjacent corresponding annular support members (51).

6. The high-strength, tensile-resistant, oil-resistant, and wear-resistant flat cable according to claim 5, characterized in that: When the outer sheath (4) bends, it can drive the support plate (61) to bend, and drive the annular support member (51) to slide in the limiting sliding groove (62) through the support plate (61).

7. The high-strength, tensile-resistant, oil-resistant, and wear-resistant flat cable according to claim 6, characterized in that: The plurality of power cores (1) and the plurality of control cores (2) have different diameters and are arranged in parallel within the outer sheath (4); the plurality of power cores (1) are arranged in parallel at a central position, and the plurality of control cores (2) are evenly arranged on both sides of the power insulating core.

8. The high-strength, tensile-resistant, oil-resistant, and wear-resistant flat cable according to claim 7, characterized in that: The power line core (1) and the control line core (2) are both a multi-strand twisted soft copper conductor plus aramid yarn structure.

9. The high-strength, tensile-resistant, oil-resistant, and wear-resistant flat cable according to claim 8, characterized in that: The insulating layer (3) and the outer sheath (4) are both made of nitrile composite material.

10. The high-strength, tensile-resistant, oil-resistant, and wear-resistant flat cable according to claim 9, characterized in that: A plurality of steel strands (41) for improving tensile strength are arranged in the outer sheath (4).

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