High strength oil resistant abrasion resistant flat cable

Abstract

The application discloses a kind of high-strength tensile oil-resistant wear-resistant flat cable, specifically related to wire and cable technical field, including power line core and control line core, power line core and control line core are set to multiple, multiple power line core and multiple control line core are all wrapped with a layer of insulating layer, multiple insulating layers are wrapped with a layer of outer sheath.The application is set by the setting of tensile assembly, when cable is pulled, power line core or control line core will drive sealing ring to slide in sealing groove, so that negative pressure is generated in sealing groove, so that multiple moving sleeves drive power line core or control line core to be close to the direction of power line core or control line core with larger stretching degree, reduce the stress concentration caused by the gap between wire core, so that tensile force is more evenly distributed on each wire core, reduce the risk of individual wire core damage, so that the whole cable can better withstand external force when subjected to tensile force, thereby improving the overall tensile strength of cable.

Description

Technical Field

[0001] This invention relates to the field of wire and cable technology, and more specifically, to a high-strength, tensile-resistant, oil-resistant, and abrasion-resistant flat cable. Background Technology

[0002] Flat cables, also known as flat wires or flat cables, are a type of cable product with a special shape. Compared to traditional round cables, flat cables are much flatter and are typically composed of multiple insulated conductors arranged in parallel. Flat cables are widely used in industries such as machinery, mining, hoisting, and transportation, for power connections and signal transmission control in various mechanical telescopic devices.

[0003] Chinese patent application CN202011073223.2 discloses a flat anti-torsion communication cable, belonging to the field of cable technology. It includes a cable core and a flat protective sheath. The cable core contains a spiral support frame fitted onto an elastic rope. The cable cores are arranged in groups of at least two, with each group mounted on a spiral support frame. Each spiral ring of the support frame has an arc-shaped hole corresponding to one of the group's cable cores, and the arc-shaped holes on the corresponding sides of each spiral ring are aligned. Each cable core passes through a row of arc-shaped holes on its corresponding side. The arc-shaped holes on both sides of the spiral support frame are coaxial with the spiral support frame, and the length of the arc-shaped hole is greater than the diameter of the cable core. The protective sheath includes, from the inside out, an anti-torsion layer, an aluminum foil isolation layer, a second shielding layer, and an outer sheath layer. The anti-torsion layer is woven from rubber rope. This invention has excellent anti-torsion performance and advantages such as good bending resistance, tensile strength, abrasion resistance, and water resistance, and is also convenient for installation in special situations.

[0004] Although the flat cables of the above invention have a certain tensile strength, the internal core diameters of the flat cables vary. Cores with larger diameters usually have a larger cross-sectional area, so they can withstand more mechanical stress, while cores with smaller diameters are the opposite. This results in uneven tension on the cable cores, which can lead to the risk of damage when the cable cores are subjected to tension. Furthermore, excessive or frequent bending of the cable can cause wear on the insulation layer, reduce insulation performance, increase the risk of short circuits, and also cause the cable cores to be squeezed, affecting the electrical performance of the cable cores.

[0005] This invention provides a high-strength, tensile-resistant, oil-resistant, and wear-resistant flat cable, aiming to solve the problems of uneven tension on the cable core, which leads to damage to the cable core, and excessive or frequent bending of the cable causing insulation wear and compression of the cable core, affecting the electrical performance of the cable core. Summary of the Invention

[0006] The purpose of this invention is to provide a high-strength, tensile-resistant, oil-resistant, and wear-resistant flat cable to solve the problems mentioned in the background art, such as uneven tension on the cable core leading to damage to the cable core, and excessive or frequent bending of the cable causing insulation wear and compression of the cable core, affecting the electrical performance of the cable core.

[0007] To achieve the above objectives, 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 multiple power cores and multiple control cores are provided, each of which is wrapped with an insulation layer, and an outer sheath is wrapped around the multiple insulation layers. A plurality of tensile-resistant components and a plurality of bending protection components are equidistantly arranged between the outer sheath and the multiple insulation layers.

[0008] The tensile component includes an annular support sleeved between the outer sheath and the plurality of insulating layers. The inner side of the annular support sleeve is provided with a number of movable sleeves equal to the number of insulating layers. The plurality of movable sleeves are respectively sleeved on the outer wall of the corresponding insulating layer, 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.

[0009] The bending protection assembly includes a support plate disposed between every two adjacent tensile assemblies, used to cooperate with the tensile assemblies to protect multiple power conductors and multiple control conductors when the cable is bent.

[0010] Preferably, the inner side of the annular support member is provided with a movable groove, and the outer circumferential wall of each movable sleeve is fixedly connected with a limiting member that is slidably connected inside the movable groove. Each pair of adjacent limiting members is fixedly connected with a plug-in member on the side that is close to each other. Each pair of adjacent plug-in members can be plugged into each other to form a seal, and each plug-in member has a communicating groove inside that can communicate with each other.

[0011] Preferably, each of the movable sleeves has a sealing groove inside, and the outer circumferential walls of the plurality of insulating layers are fixedly connected to a drive ring corresponding to the position of the movable sleeve. The plurality of drive rings are slidably connected inside the corresponding movable sleeve. One side of each drive ring is fixedly connected to a sealing ring slidably connected inside the corresponding sealing groove. Each sealing groove is connected to the corresponding communicating groove.

[0012] 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, thereby generating negative pressure in the sealing groove.

[0013] Preferably, the outer sheath has several equidistant limiting grooves inside, and several annular support members are slidably connected in the corresponding limiting grooves. Several support plates are arranged along the length direction of the outer sheath, and both ends of several support plates are respectively fixedly connected to the sidewalls of two adjacent annular support members.

[0014] Preferably, when the outer sheath bends, it can cause the support plate to bend, and the support plate can cause the annular support to slide within the limiting groove.

[0015] Preferably, the multiple power conductors and the multiple control conductors have different diameters and are arranged in parallel within the outer sheath. The multiple power conductors are arranged in parallel at the central position, and the multiple control conductors are evenly arranged on both sides of the power insulated conductor.

[0016] Preferably, both the power core and the control core are multi-strand stranded soft copper conductors with aramid fibers.

[0017] Preferably, both the insulating layer and the outer sheath are made of nitrile composite material.

[0018] Preferably, the outer sheath contains a plurality of steel strands for improving tensile strength.

[0019] The technical effects and advantages of this invention are as follows:

[0020] 1. By setting up tensile components, when the cable is stretched, the power core or control core will drive the sealing ring to slide in the sealing groove, creating a negative pressure in the sealing groove. This negative pressure will then drive the other connectors to further insert, causing multiple moving sleeves to move the power core or control core closer to the one with greater stretching. This reduces stress concentration caused by gaps between the cores, making the tensile force more evenly distributed on each core, reducing the risk of damage to individual cores, and enabling the entire cable to better withstand external forces when subjected to tensile force, thereby improving the overall tensile strength of the cable.

[0021] 2. This invention, through the setting of the bending protection component, achieves two objectives. First, when the cable bends, the support plate at the bend point will simultaneously bend along with the cable. After bending, the support plate will drive the annular support to move within the limiting groove, bringing multiple power cores and multiple control cores closer together, improving the stability of the cable during bending, making the stress distribution on the cable more uniform during bending, reducing stress concentration on individual cores, and further reducing the risk of core damage. Second, when the cable continues to bend, causing the support plate to drive the annular support to move to its limit position within the limiting groove, the annular support can no longer move, thus limiting the bending of the support plate and the cable, preventing excessive bending of the cable, and protecting the cable. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the overall internal structure of the present invention.

[0023] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 3 This is a cross-sectional view of the internal structure of the outer sheath of the present invention.

[0025] Figure 4 This is a schematic diagram of the tensile component structure of the present invention.

[0026] Figure 5 This is a cross-sectional view of the tensile component structure of the present invention.

[0027] Figure 6 This is a cross-sectional view of the movable sleeve portion of the present invention.

[0028] Figure 7 This is a schematic diagram of the ring support structure of the present invention.

[0029] Figure 8 This is a schematic diagram of the mating of the connector of the present invention.

[0030] Figure 9 This is a schematic diagram of the drive ring and sealing ring structure of the present invention.

[0031] The attached diagram is labeled as follows: 1. Power core; 2. Control core; 3. Insulation layer; 4. Outer sheath; 41. Steel strand; 5. Tensile component; 51. Annular support; 52. Moving sleeve; 53. Moving groove; 54. Limiting component; 55. Connector; 56. Connecting groove; 57. Sealing groove; 58. Drive ring; 59. Sealing ring; 6. Bending protection component; 61. Support plate; 62. Limiting slide. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1

[0034] The different diameters of the internal cores in flat cables mean that cores with larger diameters typically have a larger cross-sectional area and can therefore withstand more mechanical stress, while cores with smaller diameters have the opposite effect. This uneven distribution of tension on the cable cores can lead to a risk of damage when subjected to tension.

[0035] refer to Figure 1 and Figure 2 An embodiment of the present invention discloses a high-strength, tensile-resistant, oil-resistant, and wear-resistant flat cable, comprising a power core 1 and a control core 2. Multiple power cores 1 and multiple control cores 2 are provided, each wrapped with an insulation layer 3. An outer sheath 4 surrounds the multiple insulation layers 3. The multiple power cores 1 and multiple control cores 2 have different diameters and are arranged parallel to each other within the outer sheath 4. The multiple power cores 1 are arranged parallel to each other in the center, and the multiple control cores 2 are evenly arranged on both sides of the power cores. Both the power cores 1 and the control cores 2 are multi-strand stranded soft copper conductors with aramid fibers, ensuring structural stability and increasing the tensile strength of the conductors. The insulation layer 3 and the outer sheath 4 are both made of nitrile butadiene composite material. The nitrile butadiene composite material possesses high wear resistance, high flexibility, tear resistance, bending resistance, and oil resistance, improving the cable's service life. Multiple steel strands 41 are provided within the outer sheath 4 to increase tensile strength, thereby increasing the overall tensile strength of the cable.

[0036] refer to Figures 1-3 A number of tensile components 5 are equidistantly arranged between the outer sheath 4 and multiple insulating layers 3. The tensile components 5 include an annular support 51 sleeved between the outer sheath 4 and multiple insulating layers 3. The inner side of the annular support 51 is provided with movable sleeves 52 in the same number as the insulating layers 3. Multiple movable sleeves 52 are respectively sleeved on the outer wall of the corresponding insulating layer 3, and are used to adjust the spacing between multiple power cores 1 and multiple control cores 2 when multiple power cores 1 and multiple control cores 2 are subjected to tension.

[0037] refer to Figures 5-9 The inner side of the annular support 51 is provided with a moving groove 53. Each moving sleeve 52 has a limiting member 54 fixedly connected to the outer circumference of the sleeve and slidingly connected inside the moving groove 53. Each pair of adjacent limiting members 54 has a plug-in member 55 fixedly connected to the side that is close to each other. Each pair of adjacent plug-in members 55 can be plugged into each other and form a seal. Each plug-in member 55 has a communicating groove 56 that can communicate with each other. Each moving sleeve 52 has a sealing groove 57. The outer circumference of multiple insulating layers 3 is fixedly connected with a driving ring 58 corresponding to the position of the moving sleeve 52. Multiple driving rings 58 are slidably connected inside the corresponding moving sleeve 52. Each driving ring 58 has a sealing ring 59 fixedly connected to one side of the corresponding sealing groove 57. Each sealing groove 57 is connected to the corresponding communicating groove 56.

[0038] When the power core 1 and the control core 2 are pulled, they can drive the sealing ring 59 to slide in the sealing groove 57 through the insulation layer 3 and the drive ring 58, so that negative pressure is generated in the sealing groove 57.

[0039] In actual use, when the cable is stretched, the power core 1 or control core 2 will be stretched. At this time, the power core 1 or control core 2 will drive the drive ring 58 to slide in the corresponding movable sleeve 52 through the corresponding insulation layer 3. When the drive ring 58 slides, it will drive the sealing ring 59 to slide in the sealing groove 57, thereby generating a negative pressure in the sealing groove 57. The negative pressure will be transmitted to the other plug-in parts 55 through the connecting groove 56, thereby driving the other plug-in parts 55 to further plug in. This allows multiple movable sleeves 52 to drive the corresponding power core 1 or control core 2 to move closer to the power core 1 or control core 2 with a greater degree of stretching under the limiting action of the movable groove 53 and the limiting part 54. This reduces stress concentration caused by gaps between the cores, makes the tension more evenly distributed on each core, reduces the risk of damage to individual cores, and allows the entire cable to better withstand external forces when subjected to tensile force, thereby improving the overall tensile strength of the cable.

[0040] When the cable is no longer under tension and gradually returns to its initial state, multiple movable sleeves 52 drive the corresponding power core 1 or control core 2 to gradually return to their initial positions, thereby increasing the interval between the multiple power cores 1 and the multiple control cores 2, which helps dissipate heat and reduce the operating temperature of the cable.

[0041] In summary, by setting up the tensile component 5, when the cable is stretched, the power core 1 or the control core 2 will drive the sealing ring 59 to slide in the sealing groove 57, generating a negative pressure in the sealing groove 57. This negative pressure will then drive the remaining connectors 55 to further insert, causing multiple moving sleeves 52 to move the power core 1 or the control core 2 closer to the one with the greater degree of stretching. This reduces stress concentration caused by gaps between the cores, making the tensile force more evenly distributed on each core, reducing the risk of damage to individual cores, and enabling the entire cable to better withstand external forces when subjected to tensile force, thereby improving the overall tensile strength of the cable.

[0042] Example 2

[0043] In actual use, excessive or frequent bending of cables can cause wear on the insulation layer, reduce insulation performance, increase the risk of short circuits, 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.

[0044] refer to Figures 1-3A number of bending protection components 6 are equidistantly arranged between the outer sheath 4 and multiple insulation layers 3. The bending protection component 6 includes a support plate 61 between every two adjacent tensile components 5, which is used to protect multiple power cores 1 and multiple control cores 2 in conjunction with the tensile components 5 when the cable is bent. A number of limiting grooves 62 are equidistantly opened inside the outer sheath 4. A number of annular support members 51 are slidably connected in the corresponding limiting grooves 62. A number of support plates 61 are arranged along the length direction of the outer sheath 4. The two ends of the number of support plates 61 are respectively fixedly connected to the side walls of two adjacent annular support members 51.

[0045] When the outer sheath 4 bends, it can drive the support plate 61 to bend, and through the support plate 61, it can drive the annular support 51 to slide in the limiting groove 62.

[0046] In actual use, when the cable bends, the support plate 61 at the bend point will bend synchronously with the cable. Since the bending radius of the support plate 61 and the outer sheath 4 are different, the deformation degree of the support plate 61 and the outer sheath 4 is different. At this time, after the support plate 61 bends, it will drive one of the annular support members 51 to move in the limiting groove 62. During the movement, the annular support member 51 will drive multiple moving sleeves 52 to move away from the drive ring 58 through the limiting effect of the moving groove 53 and the limiting member 54. This will cause multiple sealing rings 59 to slide in the sealing groove 57, resulting in negative pressure in the sealing groove 57 and the connecting groove 56. This will drive multiple power cores 1 and multiple control cores 2 to move closer to each other, improve the stability of the cable when bending, make the stress distribution of the cable more uniform during bending, reduce stress concentration on a single core, and further reduce the risk of core damage.

[0047] It should be noted that when the cable continues to bend, causing the support plate 61 to move the annular support 51 to its limit position within the limiting groove 62, the annular support 51 can no longer move and thus limits the support plate 61. At this point, the support plate 61 can restrict the bending of the cable. By adjusting the length of the limiting groove 62, the moving distance of the annular support 51 can be changed, thereby adjusting the timing of limiting the support plate 61 and preventing excessive bending of the cable, thus protecting the cable.

[0048] Because there is a gap between the outer sheath 4 and the insulation layer 3, on the one hand, the support plate 61 can restrict the bending of the cable when it is bent, which can prevent the deformation of the outer sheath 4 from squeezing the power core 1 and the control core 2 during the bending process, and prevent the insulation layer 3 from being worn. On the other hand, when the cable is subjected to impact, the support plate 61 can deform to buffer the impact, thereby protecting the cable core and improving the service life of the cable.

[0049] In summary, by setting up the bending protection component 6, on the one hand, when the cable bends, the support plate 61 at the bend point will bend synchronously with the cable. After the support plate 61 bends, it will drive the annular support 51 to move within the limiting groove 62, so that multiple power cores 1 and multiple control cores 2 move closer to each other, improving the stability of the cable during bending, making the stress distribution of the cable during bending more uniform, reducing stress concentration on individual cores, and further reducing the risk of core damage. On the other hand, when the cable continues to bend and the support plate 61 drives the annular support 51 to move to the limit position within the limiting groove 62, the annular support 51 can no longer move, which restricts the bending of the support plate 61 and the cable, preventing the cable from bending excessively, thereby protecting the cable.

[0050] In conclusion, 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 within the protection scope of the present invention.

Claims

1. A high-strength, oil-resistant, wear-resistant, flat cable, comprising power line cores (1) and control line cores (2), characterized in that: the power line cores (1) and the control line cores (2) are each provided in multiple, and each of the multiple power line cores (1) and the multiple control line cores (2) is wrapped with an insulating layer (3), and the multiple insulating layers (3) are wrapped with an outer sheath (4), and a plurality of tensile components (5) and a plurality of bending protection components (6) are provided equidistantly between the outer sheath (4) and the multiple insulating layers (3); the tensile component (5) comprises an annular support (51) wrapped between the outer sheath (4) and the multiple insulating layers (3), and the inner side of the annular support (51) is provided with a number of moving sleeves (52) equal to the number of the insulating layers (3), and each of the multiple moving sleeves (52) is wrapped around the outer wall of a corresponding insulating layer (3) to adjust the spacing between the multiple power line cores (1) and the multiple control line cores (2) when the multiple power line cores (1) and the multiple control line cores (2) are subjected to tension; the bending protection component (6) comprises a support plate (61) provided between every two adjacent tensile components (5) to protect the multiple power line cores (1) and the multiple control line cores (2) in cooperation with the tensile components (5) when the cable is bent; the inner side of the annular support (51) is provided with a moving groove (53), the circumferential outer wall of each moving sleeve (52) is fixedly connected with a limiting piece (54) slidingly connected in the moving groove (53), each of the two adjacent limiting pieces (54) is fixedly connected with a plug-in piece (55) on the side close to each other, and each of the two adjacent plug-in pieces (55) can be plugged into each other and form a seal, and the inside of each plug-in piece (55) is provided with a communication groove (56) capable of communicating with each other; the inside of each moving sleeve (52) is provided with a sealing groove (57), the circumferential outer wall of each of the multiple insulating layers (3) is fixedly connected with a driving ring (58) corresponding in position to the moving sleeve (52), and each of the multiple driving rings (58) is slidingly connected in the corresponding moving sleeve (52), one side of each driving ring (58) is fixedly connected with a sealing ring (59) slidingly connected in the corresponding sealing groove (57), and each sealing groove (57) is in communication with the corresponding communication groove (56). When the power line cores (1) and the control line cores (2) are pulled, the sealing ring (59) is caused to slide in the sealing groove (57) by the insulating layer (3) and the driving ring (58), so that negative pressure is generated in the sealing groove (57). ​ ​ ​ ​ 2. The high strength oil resistant, abrasion resistant, flat cable of claim 1, wherein: ​ 3. The high strength, oil resistant, abrasion resistant, flat cable of claim 2, wherein: The outer sheath (4) is internally equidistantly provided with a plurality of limiting sliding grooves (62), a plurality of annular support members (51) are all slidingly connected in the corresponding limiting sliding grooves (62), a plurality of support plates (61) are arranged along the length direction of the outer sheath (4), and both ends of each of the plurality of support plates (61) are respectively fixedly connected with the side walls of two adjacent annular support members (51).

4. The high strength oil resistant, abrasion resistant, flat cable of claim 3, wherein: When the outer sheath (4) is bent, the support plates (61) can be driven to be bent, and the annular support members (51) can be driven to slide in the limiting sliding grooves (62) through the support plates (61).

5. The high strength, oil resistant, abrasion resistant, flat cable of claim 4, wherein: A plurality of power line cores (1) and a plurality of control line cores (2) are arranged in parallel in the outer sheath (4) and have different diameters, the plurality of power line cores (1) are arranged in parallel at the central position, and the plurality of control line cores (2) are uniformly arranged on both sides of the power insulation line core.

6. The high strength oil resistant, abrasion resistant, flat cable of claim 5, wherein: The power line core (1) and the control line core (2) are both multi-stranded twisted soft copper conductors plus aramid silk structures.

7. The high strength oil resistant, abrasion resistant, flat cable of claim 6, wherein: The insulating layer (3) and the outer sheath (4) are both made of butyronitrile composite materials.

8. The high strength oil resistant, abrasion resistant, flat cable of claim 7, wherein: A plurality of steel strands (41) for improving tensile strength are arranged in the outer sheath (4).

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