Photoelectric composite cable for mooring unmanned aerial vehicle

Abstract

The utility model belongs to the technical field of photoelectric composite cables for mooring unmanned aerial vehicles, and discloses a photoelectric composite cable for mooring an unmanned aerial vehicle. The photoelectric composite cable for mooring the unmanned aerial vehicle comprises an electric unit, an optical unit, a filling core, a wrapping layer and an outer protective layer, each electric unit comprises a conductor and an insulating layer, and the insulating layer wraps the conductor to serve as an insulating wire core; the optical unit comprises an optical fiber and a beam tube, and a gap is reserved between the optical fiber and the beam tube; the filling core is arranged outside an area enclosed by the plurality of electric units and the plurality of optical units, the plurality of electric units, the plurality of optical units and the filling core form a cable core in a cabling and twisting mode, and a wrapping layer is formed outside the cable core in a wrapping mode; and an outer protective layer is arranged outside the wrapping layer. The photoelectric composite cable improves the performance indexes of ultraviolet resistance, wear resistance, mechanical strength and the like of the photoelectric composite cable for the mooring unmanned aerial vehicle, can be applied to severe environments such as strong ultraviolet rays, moisture, rainwater, seaborne and the like, and meets the use requirements of various scenes of the mooring unmanned aerial vehicle.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the technical field of tethered unmanned aerial vehicle photoelectric comprehensive cable, especially relates to a tethered unmanned aerial vehicle photoelectric comprehensive cable. BACKGROUND

[0002] With the continuous improvement of the automation, digitization and intelligence level of the tethered unmanned aerial vehicle, higher requirements are put forward for the bandwidth, time delay, safety and the like of data transmission. Compared with data cables, optical cables have the advantages of light weight, anti-electromagnetic interference, high bandwidth, low time delay and the like, and therefore are widely used in the field of tethered unmanned aerial vehicles. In order to solve the power consumption problem of the tethered unmanned aerial vehicle equipment, the optical cable and the electric cable are integrated to form an optical-electric comprehensive cable, which is integrated with optical communication and copper wire power transmission, and simultaneously solves the problems of equipment power consumption and signal transmission, and bears the important data transmission function in the tethered unmanned aerial vehicle.

[0003] At present, higher requirements are put forward for the cable weight, cable diameter, mechanical strength, wear resistance and reliability and the like in the field of tethered unmanned aerial vehicle cables. The existing tethered unmanned aerial vehicle photoelectric comprehensive cable mostly adopts a nylon or aramid fiber braided sheath as an outer sheath, but has the following disadvantages: firstly, the existing extruded nylon or aramid fiber braided outer sheath material has poor ultraviolet resistance, and the mechanical properties of the material obviously decrease after long-time exposure to ultraviolet light; secondly, the extruded nylon or aramid fiber braided outer sheath material has a certain water absorption, and the water absorption in a humid or rainy environment increases the weight of the photoelectric comprehensive cable, and affects the reliability of the unmanned aerial vehicle; and thirdly, the tethered photoelectric comprehensive cable has the phenomena of wear, fuzzing and broken wires after long-time use. SUMMARY

[0004] The utility model discloses a tethered unmanned aerial vehicle photoelectric comprehensive cable, which optimizes material selection, structure design and process optimization, and improves the ultraviolet resistance, wear resistance and mechanical strength of the tethered unmanned aerial vehicle photoelectric comprehensive cable.

[0005] To achieve the above object, the utility model provides a tethered unmanned aerial vehicle photoelectric comprehensive cable, which comprises an electric unit, an optical unit, a filling core, a wrapping layer and an outer sheath.

[0006] The electric unit comprises a conductor and an insulating layer, the insulating layer wraps the conductor as an insulated core, the conductor is a copper-containing conductor, and the material of the insulating layer is fluoroplastic.

[0007] The optical unit comprises an optical fiber and a bundle tube, and a gap is left between the optical fiber and the bundle tube, the optical fiber can move in the bundle tube to form a loose sleeve structure.

[0008] The filling core is arranged outside the area surrounded by the plurality of electric units and optical units, the plurality of electric units, optical units and filling core are formed into a cable core through cabling twisting, and a black PTFE tape is used to form a wrapping layer through wrapping outside the cable core;

[0009] An outer protective layer is arranged outside the wrapping layer.

[0010] Further, the conductor in the electric unit adopts a structure of 19 / 0.127 mm tinned copper stranded wire.

[0011] Further, the outer diameter of the electric unit is not greater than 0.95 mm, and the weight per kilometer is not greater than 3.0 kg.

[0012] Further, the nominal wall thickness of the insulating layer in the electric unit is 0.15 mm, and the material of the insulating layer is crosslinked ethylene polytetrafluoroethylene copolymer subjected to irradiation crosslinking treatment.

[0013] Further, the outer diameter of the optical unit is not greater than 0.95 mm, and the weight per kilometer is not greater than 0.7 kg.

[0014] Further, the optical fiber in the optical unit is a silica optical fiber, and the bundle tube of the optical unit is formed by extrusion molding of polyether ether ketone.

[0015] Further, the material of the filling core is PBO fiber, which is woven or twisted into a bundle.

[0016] Further, the wrapping layer adopts black PTFE tape wrapping, and the covering rate is 40% to 50%.

[0017] Further, the material of the outer protective layer is PTFE fiber, which is formed by weaving.

[0018] Beneficial effects: the utility model provides a kind of photoelectric comprehensive cable for tethered unmanned aerial vehicle, by optimizing material selection, structure design, process optimization, solve the weight of existing tethered unmanned aerial vehicle cable, line diameter is big, mechanical strength is first, wear resistance is poor and the shortcoming such as poor ultraviolet resistance, improve the ultraviolet resistance, wear resistance, mechanical strength and other performance indexes of photoelectric comprehensive cable for tethered unmanned aerial vehicle, can be applied in strong ultraviolet, humid, rain, sea and other harsh environments, meet the use requirement of tethered unmanned aerial vehicle in multiple scenes. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is the structure schematic view of photoelectric comprehensive cable for tethered unmanned aerial vehicle related to the embodiment of the utility model;

[0020] Fig. 2 It is the electric unit schematic view of photoelectric comprehensive cable for tethered unmanned aerial vehicle related to the embodiment of the utility model;

[0021] Fig. 3It is the light unit schematic view of the photoelectric comprehensive cable for tethered unmanned aerial vehicle.

[0022] Mark explanation:

[0023] Among them: 1 is outer protective layer; 2 is around the package layer; 3 is filling core; 4 is electric unit; 5 is light unit; 41 is conductor; 42 is insulating layer; 51 is optical fiber; 52 is bundle tube. Specific implementation

[0024] The preferred mechanism and implemented method of the utility model are further described below in combination with the drawings and specific implementation.

[0025] As Figs. 1 to 3 shown, the utility model discloses a kind of photoelectric comprehensive cable technical schemes for tethered unmanned aerial vehicle. Embodiment

[0026] As Fig. 1 shown, a kind of photoelectric comprehensive cable for tethered unmanned aerial vehicle, cross section is multiple circles, from inside to outside, it is cable core (light unit 5, electric unit 4, filling core 3), around the package layer 2 and outer protective layer 1.

[0027] As Fig. 2 shown, the electric unit 4, setting in the cable core of the photoelectric comprehensive cable, from inside to outside, it is conductor 42 and insulating layer 41, and insulating layer 41 is wrapped conductor 42 as insulated wire core;Conductor 42 uses the structure as 19 / 0.127mm tinned copper stranded conductor wire;The nominal wall thickness of electric unit insulating layer is 0.15mm, and insulating layer 41 uses crosslinked ethylene polytetrafluoroethylene copolymer (density 1.75g / cm 3 ) after irradiation crosslinking treatment instead of polyfluoroethylene propylene (density 2.15g / cm 3 ) as insulating layer, and the electric property and temperature resistance property remain basically unchanged, while the weight of insulating material is reduced, thereby reducing the weight of overall photoelectric comprehensive cable, and the maximum outer diameter of electric unit is 0.95mm, and the weight of each kilometer is not more than 3.0kg.

[0028] As Fig. 3 shown, the light unit 5, setting in the cable core of the photoelectric comprehensive cable, includes optical fiber 51 and bundle tube 52;Optical fiber uses silica optical fiber, and it can be one or more of B6, A1b and A1a;Bundle tube 52 uses polyether ether ketone, and there is gap between optical fiber 51 and bundle tube 52, and optical fiber 51 can be limitedly moved in bundle tube 52, forms loose sleeve structure, simultaneously utilizes the high hardness characteristics of bundle tube 52 material polyether ether ketone, plays the role of uniform stress and relieving external stress, forms protection to optical fiber, and the maximum outer diameter of light unit is 0.95mm, and the weight of each kilometer is not more than 0.7kg.

[0029] The filling core 3 adopts PBO fiber, is woven or twisted into a bundle to form a tensile filling core, the tensile strength and elastic modulus of which are more than 2 times of para-aramid fiber, so that the tensile performance of the photoelectric comprehensive cable can be significantly improved, and the breaking tensile strength can reach 2500 N.

[0030] The wrapping layer 2 adopts black PTFE tape, is wrapped around the electric unit 4, the light unit 5 and the filling core 3 in a wrapping mode, and the covering rate is 40%-50%. The black PTFE tape can isolate the influence of ultraviolet rays on the PBO fiber, and can also isolate the influence of external moisture on the PBO fiber, so that the weight of the photoelectric comprehensive cable is not increased.

[0031] The outer protective layer 1 adopts PTFE fiber and is formed by weaving; the outer protective layer 1 is wrapped outside the photoelectric comprehensive cable, and the PTFE fiber has the advantages of wear resistance, ultraviolet resistance, weather resistance, oil resistance and chemical corrosion resistance. The photoelectric comprehensive cable has a maximum outer diameter of 2.6 mm, and a weight of not more than 10.5 kg per kilometer.

[0032] The utility model provides a kind of photoelectric comprehensive cable for tethered unmanned aerial vehicle, by above-mentioned design, i.e. obtain a kind of photoelectric comprehensive cable for tethered unmanned aerial vehicle, the photoelectric comprehensive cable solves the weight of the existing tethered unmanned aerial vehicle cable, line diameter is big, mechanical strength is first, wear resistance is poor and the shortcoming such as poor ultraviolet resistance, expand the application scene of photoelectric comprehensive cable for tethered unmanned aerial vehicle, with good market prospect.

[0033] Finally, it should be noted that: the above is only the preferred embodiment of the application / utility model, and is not used to limit the application / utility model, although the application / utility model is described in detail with reference to the embodiment, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, but any modification, equivalent replacement, improvement, etc. within the spirit and principles of the application / utility model should be included in the protection scope of the application / utility model.

Claims

1. An optoelectronic integrated cable for tethering a UAV, characterized by: It includes electrical unit, optical unit, filling core, wrapping layer and outer sheath; The electrical unit includes a conductor and an insulating layer, wherein the insulating layer wraps the conductor as an insulating core, the conductor is a copper wire, and the insulating layer is made of fluoroplastic; The optical unit includes an optical fiber and a bundle tube. A gap is left between the optical fiber and the bundle tube, and the optical fiber can move limitedly in the bundle tube to form a loose tube structure. The filling core is placed outside the area surrounded by several electrical units and optical units. Several electrical units, optical units and the filling core are twisted together to form a cable core. A black PTFE tape is wrapped around the outside of the cable core to form a wrapping layer. An outer protective layer is arranged around the sheath.

2. The photoelectric integrated cable for tethered drones according to claim 1, characterized in that: The conductors in the electrical unit are made of 19 / 0.127mm tinned copper stranded wire.

3. The photoelectric integrated cable for tethered drone according to claim 1, characterized in that: The outer diameter of the electrical unit shall not exceed 0.95 mm, and the weight per kilometer shall not exceed 3.0 kg.

4. The photoelectric integrated cable for tethered drone according to claim 1, characterized in that: The nominal wall thickness of the insulation layer in the electrical unit is 0.15 mm, and the insulation layer material is cross-linked ethylene polytetrafluoroethylene copolymer that has been irradiated and cross-linked.

5. The photoelectric integrated cable for tethered drone according to claim 1, characterized in that: The outer diameter of the optical unit shall not exceed 0.95 mm, and the weight per kilometer shall not exceed 0.7 kg.

6. The photoelectric integrated cable for tethered drone according to claim 1, characterized in that: The optical fiber in the optical unit is a silica optical fiber, and the bundle tube of the optical unit is extruded by polyetheretherketone.

7. The photoelectric integrated cable for tethered drone according to claim 1, characterized in that: The core filling material is PBO fiber, which is braided or twisted into bundles.

8. The photoelectric integrated cable for tethered drone according to claim 1, characterized in that: The wrapping layer is made of black PTFE tape with an overlap rate of 40%~50%.

9. The photoelectric integrated cable for tethered drone according to claim 1, characterized in that: The outer sheath material is PTFE fiber, which is formed by weaving.

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