Self-supporting low-wind-resistance radio frequency coaxial cable

Abstract

The utility model belongs to the technical field of cables, and particularly relates to a self-supporting low-wind-resistance radio frequency coaxial cable, which comprises an inner conductor, an insulating layer, a shielding layer, a sheath layer and a protective layer which are sequentially sleeved from inside to outside, the outer contours of the protruding parts are gradually reduced in the direction away from the inner conductor, two reinforcing pieces are further arranged outside the sheath layer, and each reinforcing piece is inserted into one protruding part. According to the radio-frequency coaxial cable, the protruding part is arranged and the reinforcing piece is inserted into the protruding part, so that longitudinal tension in the construction process can be resisted, the firmness of the cable can be ensured during construction, the cable is prevented from being stressed and deformed, compared with a common radio-frequency coaxial cable, clamp construction is omitted, the material cost is reduced, and the radio-frequency coaxial cable can be applied to a special environment in which a clamp cannot be installed; the outer contour of the protruding part is designed to be gradually reduced in the direction away from the inner conductor, so that the transverse wind resistance can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field especially relates to a self -supporting low wind resistance radio frequency coaxial cable. BACKGROUND

[0002] Radio frequency coaxial cable is a kind of transmission medium widely used in communication system, in the laying process, radio frequency coaxial cable mainly relies on self bearing longitudinal tension, and there is no additional bearing tensile stress unit.Radio frequency coaxial cable is laid, and because there is no bearing tensile stress unit, it completely depends on self bearing longitudinal tension.When the stress reaches a certain degree in the construction process, the cable product structure can be deformed, and then its performance is affected.This deformation is often difficult to directly identify on the appearance of the sheath, leading to difficulties in troubleshooting product quality problems, and also reducing construction efficiency.

[0003] In order to ensure the stability and safety of cable in the laying process, it is necessary to install a fixed fixture along the line before construction, and then install the laid cable into the fixture one by one for fixation.This process is relatively complex and inconvenient, especially in the construction environment where the fixture cannot be punched, the construction scheme becomes more complex.

[0004] And the sheath layer of radio frequency coaxial cable is circular structure, which makes the cable receive a larger transverse resistance and may appear vibration or shaking under strong wind blowing in outdoor or environment with wind tunnel.The installation components may have hidden troubles due to loosening, affecting the stability and safety of the cable. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is that the cable longitudinal stress leads to deformation, fixture fixation is complex, and the transverse wind resistance is large in the prior art.The utility model provides a self-supporting low wind resistance radio frequency coaxial cable, which can save the construction process of fixture on the basis of resisting longitudinal stress and can reduce the transverse wind resistance.

[0006] The technical scheme adopted by the utility model to solve the technical problem is that a self-supporting low wind resistance radio frequency coaxial cable, comprising: an inner conductor, an insulating layer, a shielding layer, a sheath layer and a protective layer are sequentially sleeved from inside to outside, two ends of the protective layer are respectively radially outwardly protruding to form a protruding part, the outer contour of the protruding part gradually decreases in the direction away from the inner conductor, and the outer part of the sheath layer is further provided with two reinforcing members, and each reinforcing member is inserted into a protruding part.

[0007] The specific technical effect is: by setting the protruding part and inserting the reinforcing part therein, the longitudinal tensile force in the construction process is resisted, the performance change caused by the deformation or damage of the cable under stress is prevented, the cable can be firmly ensured during construction, the fixture construction is removed and the material cost is reduced compared with the ordinary radio frequency coaxial cable, the construction is more convenient and efficient, and the cable can be applied in special environments where the fixture cannot be installed; by designing the outer contour of the protruding part to gradually decrease in the direction away from the inner conductor, the transverse wind resistance is reduced, and the vibration and shaking safety hazards of the cable in outdoor or wind tunnel environment are avoided.

[0008] Further, each protruding part comprises an arc-shaped part, a connecting part and a windward part, the arc-shaped part is coaxially arranged with the sheath layer and is sleeved outside the sheath layer, one end of the connecting part is connected with the arc-shaped part, the other end of the connecting part gradually decreases in the outer contour in the direction away from the inner conductor and is connected with the windward part, the windward part is arranged in an arc-shaped structure, and each reinforcing part is inserted into a windward part.

[0009] The specific technical effect is: the outer contour of the protruding part gradually increases from the windward part, the connecting part to the arc-shaped part, forming a smooth streamline design, which can effectively reduce air resistance, make the transverse airflow flow more smoothly through the cable, and the windward part with smaller thickness of the arc-shaped part can more effectively cut air, reduce transverse wind resistance, and avoid vibration and shaking safety hazards of the cable in outdoor or wind tunnel environment.

[0010] Further, the axes of the two windward parts and the central axis of the inner conductor are located in the same horizontal plane.

[0011] The specific technical effect is: each windward part is installed with a reinforcing part, the cable laying direction can be controlled by the two reinforcing parts, so that the windward part is directed to the direction of the wind, and the two protruding parts are similar to the water drop type, which can reduce the wind resistance of the wind blowing from the two opposite windward parts.

[0012] Further, the two protruding parts are symmetrical about the vertical plane where the central axis of the inner conductor is located.

[0013] Further, the inner conductor comprises one or more metal conductors, and the metal conductor is a hollow structure or a solid structure.

[0014] Further, the metal conductor is a smooth tubular structure or a spiral structure.

[0015] The specific technical effect is that the inner conductor of the smooth tubular structure can provide better electrical conductivity, ensure stable transmission of signals, the inner conductor of the spiral structure increases the flexibility of the cable product, reduces the bending radius of the product, and facilitates installation in small spaces.

[0016] Further, the insulating layer is a solid insulating layer, a foamed insulating layer, a skin-and-foam insulating layer, or a skin-and-foam skin insulating layer.

[0017] The specific technical effect is that the type of the insulating layer is mainly based on its material composition, structural characteristics, and application scenarios. Different types of insulating layers have advantages in electrical performance, mechanical strength, weight, cost, etc., so it is necessary to select according to specific needs in actual application.

[0018] Further, the shielding layer is a metal wire sparse shielding layer, a metal wire braided shielding layer, a metal strip lap longitudinal wrapping shielding layer, or a metal composite strip lap longitudinal wrapping shielding layer.

[0019] The specific technical effect is that the structure of the shielding layer can be selected according to the shielding effectiveness, structural stability, cost-effectiveness, etc. of the cable.

[0020] Further, the reinforcing member is a metal structure or a non-metal structure.

[0021] The specific technical effect is that the reinforcing member can be made of a material with high tensile strength, such as phosphatized steel wire or fiber reinforced polymer (FRP, also known as glass steel) or Kevlar fiber.

[0022] Further, the protective layer is a polyolefin protective layer or a low-smoke halogen-free flame-retardant polyolefin protective layer.

[0023] The specific technical effect is that the protective layer is used to protect the radio frequency coaxial cable and the reinforcing member.

[0024] Compared with the prior art, the utility model has the beneficial effects that:

[0025] (1) The utility model discloses a convex part and a reinforcing member inserted in the convex part, which is used to resist longitudinal tension during construction, prevent performance changes caused by stress deformation or damage of the cable, and ensure the firmness of the cable during construction. Compared with ordinary radio frequency coaxial cables, the utility model removes the fixture construction and reduces material costs, making the construction more convenient and efficient, and can be applied in special environments where fixtures cannot be installed.

[0026] (2) The utility model discloses that the outer contour of the convex part is designed to gradually decrease in the direction away from the inner conductor, which can reduce the horizontal wind resistance and avoid the vibration and shaking safety hazards of the cable in outdoor or wind tunnel environments.

[0027] (3), the cable laying direction is controlled by two reinforcing members, so that the windward cable direction is controlled, the protruding parts at both ends of the cable are in a water drop type, and the wind resistance can be reduced when the wind blows in two directions. BRIEF DESCRIPTION OF DRAWINGS

[0028] The utility model will be further explained in connection with the drawings and embodiments.

[0029] Figure 1 It is a structural schematic view of a self-supporting low-wind-resistance radio frequency coaxial cable.

[0030] Figure 2 It is a structural schematic view of a self-supporting low-wind-resistance radio frequency coaxial cable. Figure 1 It is a structural schematic view of a self-supporting low-wind-resistance radio frequency coaxial cable.

[0031] In the figure: 1, inner conductor; 2, insulating layer; 3, shielding layer; 4, reinforcing member; 5, sheath layer; 6, protective layer; 601, protruding part; 602, arc-shaped part; 603, connecting part; 604, windward part. DETAILED DESCRIPTION

[0032] The utility model will be further explained in connection with the drawings and embodiments.

[0033] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.In addition, the features limited as "first", "second" can be explicitly or implicitly include one or more features.In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0034] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "connection", "connect" should do the broad sense understanding, for example, can be fixed connection, can be detachable connection, or integrally connected;Can be mechanical connection, can be electrical connection;Can be directly connected, can be indirectly connected through the intermediate medium, can be the communication inside two elements.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0035] As Figures 1 to 2 The utility model discloses a kind of self-supporting low wind resistance radio frequency coaxial cables, including inner conductor 1, insulating layer 2, shielding layer 3, sheath layer 5 and protective layer 6 that are sequentially sleeved from inside to outside, the both ends of protective layer 6 are respectively radially outwardly convex to form convex part 601, the outer contour of convex part 601 gradually decreases in the direction away from inner conductor 1, the outside of sheath layer 5 is also provided with two reinforcing members 4, and each reinforcing member 4 is inserted in a convex part 601.

[0036] Therefore: by setting convex part 601 and inserting reinforcing member 4 in it, for resisting longitudinal tension in construction process, prevent cable stress deformation or damage to cause performance change, can guarantee cable firm during construction, compared with ordinary radio frequency coaxial cable removes fixture construction and reduces material cost, construction is more convenient, efficient, and can be applied in special environment where fixture cannot be installed;By designing the outer contour of convex part 601 as gradually decreasing in the direction away from inner conductor 1, transverse wind resistance can be reduced, and vibration and shaking safety hazards of cable in outdoor or wind tunnel environment can be avoided.

[0037] In the embodiment, each convex part 601 includes arc-shaped portion 602, connecting portion 603 and windward portion 604, arc-shaped portion 602 is coaxially arranged with sheath layer 5 and is sleeved on the outside of sheath layer 5, one end of connecting portion 603 is connected with arc-shaped portion 602, the other end of connecting portion 603 gradually decreases in the direction away from inner conductor 1 in the outer contour, and is connected with windward portion 604, windward portion 604 is arranged in arc-shaped structure, and each reinforcing member 4 is inserted in a windward portion 604.

[0038] Therefore: the outer contour of convex part 601 gradually increases from windward portion 604, connecting portion 603 to arc-shaped portion 602, forming a smooth streamline design, this design can effectively reduce air resistance, so that transverse airflow flows more smoothly through the cable, compared with the thickness of arc-shaped portion 602, the windward portion 604 can more effectively cut air, reduce transverse wind resistance, avoid vibration and shaking safety hazards of cable in outdoor or wind tunnel environment.

[0039] In the embodiment, the axes of the two windward parts 604 are in the same horizontal plane as the central axis of the inner conductor 1.

[0040] Thus, a reinforcing member 4 is installed in each windward part 604, and the cable laying direction can be controlled by the two reinforcing members 4, so as to control the windward cable direction, so that the windward part 604 faces the direction of the wind, and the protruding parts 601 at both ends are similar to water drop type, so that the wind blowing from the direction of the two opposite windward parts 604 can be reduced.

[0041] That is, as shown in the figure, the protruding part 601 on the left can reduce the wind resistance of the wind blowing from left to right, and the protruding part 601 on the right can reduce the wind resistance of the wind blowing from right to left. Figure 2

[0042] In the embodiment, the two protruding parts 601 are symmetrical about the vertical plane in which the central axis of the inner conductor 1 is located.

[0043] In the embodiment, the inner conductor 1 includes one or more metal conductors, which are hollow or solid structures.

[0044] In the embodiment, the metal conductor is a smooth tubular structure or a spiral structure.

[0045] Thus, the smooth tubular structure of the inner conductor 1 can provide better electrical conductivity and ensure stable signal transmission, and the spiral structure of the inner conductor 1 increases the flexibility of the cable product, reduces the bending radius of the product, and facilitates installation in small spaces.

[0046] In the embodiment, the insulation layer 2 is a solid insulation layer, a foamed insulation layer, a skin bubble insulation layer, or a skin bubble skin insulation layer.

[0047] Thus, the insulation layer 2 is composed of polyolefin material, and the type of the insulation layer 2 is mainly based on its material composition, structural characteristics, and application scenarios. Different types of insulation layers 2 have advantages in electrical performance, mechanical strength, weight, cost, etc., so it is necessary to select according to specific needs in actual application.

[0048] In the embodiment, the shielding layer 3 is a metal wire loose shielding layer, a metal wire braided shielding layer, a metal strip lap longitudinal wrapping shielding layer, or a metal composite strip lap longitudinal wrapping shielding layer.

[0049] Thus, the structure of the shielding layer 3 can be selected according to the shielding effectiveness, structural stability, cost-effectiveness, etc. of the cable.

[0050] In the embodiment, the sheath layer 5 is a polyolefin sheath layer or a low-smoke halogen-free flame-retardant polyolefin sheath layer.

[0051] ​In the embodiment, the reinforcing member 4 is a metal structure or a non-metal structure.

[0052] Thus, the reinforcing member 4 can be made of a material with high tensile strength, such as phosphorized steel wire or FRP or Kevlar fiber.

[0053] In the embodiment, the protective layer 6 is a polyolefin protective layer or a low-smoke halogen-free flame-retardant polyolefin protective layer.

[0054] Thus, the protective layer 6 is used to protect the radio frequency coaxial cable and the reinforcing member 4.

[0055] Compared with the prior art, the utility model has the beneficial effects that:

[0056] (1) The utility model discloses a protruding part 601 and inserts the reinforcing member 4 in it, which is used to resist the longitudinal tension in the construction process and prevent the cable from being deformed or damaged to cause performance changes, so that the cable can be firmly secured during construction, the fixture construction is removed, the material cost is reduced, the construction is more convenient and efficient, and the utility model can be applied to special environments where the fixture cannot be installed.

[0057] (2) The utility model discloses that the outer contour of the protruding part 601 is designed to gradually decrease in the direction away from the inner conductor 1, which can reduce the horizontal wind resistance and avoid the vibration and shaking of the cable in the outdoor or wind tunnel environment.

[0058] (3) The two reinforcing members 4 control the cable laying direction, thereby controlling the cable direction of the wind, and the protruding parts 601 at both ends of the cable are in the shape of water droplets, so that the wind from two directions can reduce the wind resistance.

[0059] The above-mentioned ideal embodiments of the utility model are for inspiration, and through the above-mentioned description, relevant personnel can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and must be determined by the scope of the claims.

Claims

1. A self-supporting low wind-loss radio frequency coaxial cable, characterized by, The application relates to a cable, which comprises an inner conductor (1), an insulation layer (2), a shielding layer (3), a sheath layer (5) and a protective layer (6) which are sequentially sleeved from inside to outside, the two ends of the protective layer (6) are respectively radially outwardly protruded to form protruding portions (601), the outer contour of the protruding portions (601) gradually decreases in a direction away from the inner conductor (1), and the outer part of the sheath layer (5) is additionally provided with two reinforcing members (4), each of the reinforcing members (4) is inserted into a protruding portion (601). Each of the protruding portions (601) comprises an arc-shaped portion (602), a connecting portion (603) and a windward portion (604), the arc-shaped portion (602) is coaxially arranged with the sheath layer (5) and is sleeved on the outer part of the sheath layer (5), one end of the connecting portion (603) is connected with the arc-shaped portion (602), the outer contour of the other end of the connecting portion (603) gradually decreases in a direction away from the inner conductor (1) and is connected with the windward portion (604), the windward portion (604) is arranged in an arc-shaped structure, and each of the reinforcing members (4) is inserted into a windward portion (604).

2. A self-supporting, low wind-loss radio frequency coaxial cable as defined in Claim 1, wherein, The axes of the two windward portions (604) and the central axis of the inner conductor (1) are located in the same horizontal plane.

3. A self-supporting, low wind-loss radio frequency coaxial cable as defined in Claim 2, wherein, The two protruding portions (601) are symmetrical about the vertical plane in which the central axis of the inner conductor (1) is located.

4. A self-supporting, low wind-loss radio frequency coaxial cable as recited in claim 1, wherein, The inner conductor (1) comprises one or more metal conductors, and the metal conductors are hollow structures or solid structures.

5. A self-supporting, low wind-loss radio frequency coaxial cable as defined in Claim 1, wherein, The metal conductors are smooth tubular structures or spiral structures.

6. A self-supporting, low wind-loss radio frequency coaxial cable as defined in Claim 5, wherein, The insulation layer (2) is a solid insulation layer, a foamed insulation layer, a skin-foam insulation layer or a skin-foam-skin insulation layer.

7. A self-supporting, low wind-loss radio frequency coaxial cable as defined in Claim 1, wherein, The shielding layer (3) is a metal wire loose-wound shielding layer, a metal wire braided shielding layer, a metal strip lap longitudinal wrapping shielding layer or a metal composite strip lap longitudinal wrapping shielding layer.

8. A self-supporting, low wind-loss radio frequency coaxial cable as defined in Claim 1, wherein, The reinforcing member (4) is a metal structure or a non-metal structure.

9. A self-supporting, low wind-loss radio frequency coaxial cable as defined in Claim 1, wherein, The protective layer (6) is a polyolefin protective layer or a low-smoke halogen-free flame-retardant polyolefin protective layer.

10. A self-supporting, low wind-loss radio frequency coaxial cable as defined in Claim 1, wherein, ​

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