A highly elastic intelligent warning net rope

Abstract

The present invention discloses a highly elastic intelligent warning net rope, which relates to the technical field of protection and warning. It includes a multi-layer structure rope and a sealing end connector connected together. The multi-layer structure rope includes a corrugated protective layer, a braided reinforcement layer, a highly elastic isolation layer, and a liquid metal sensing layer arranged in sequence from the outside to the inside. The corrugated protective layer wraps around the outside of the braided reinforcement layer. The braided reinforcement layer is located outside the highly elastic isolation layer and constrains single or multiple highly elastic isolation layers to be closely arranged along the center. Inside the highly elastic isolation layer, there are single or multiple cylindrical cavities arranged in a circular matrix along the center, and liquid metal is poured into the cavities to form the liquid metal sensing layer. The present invention has a warning function by generating an electrical signal due to the deformation of the liquid metal sensing layer. At the same time, multiple warning net ropes are woven together to form an interception net, and information such as the moving speed and approximate shape and volume of foreign objects can be obtained by analyzing the change of the electrical signal.

Description

Technical Field

[0001] The present invention relates to the field of protection and early warning technology, and in particular to a highly elastic intelligent early warning net rope. Background Art

[0002] Ropes and cables play a vital role in the field of protection. Nowadays, protective rope and cable products are mainly divided into two categories: one is a steel wire rope based on metal materials, which has high strength, low strain, heavy weight and easy corrosion; the other is a fiber rope based on synthetic polymer fibers, which is light, soft, high in strength and modulus, durable, and corrosion-resistant, and can be used in many environmental conditions. However, when the rope plays an interception role, it cannot inform the user of the intrusion in real time, does not have sensing and early warning functions, and cannot well remind the user to repair or replace it when the rope breaks.

[0003] Some important places, such as the periphery of military bases, the periphery of core units, airports, underwater offshore drilling platforms, the periphery of nuclear power plants and underwater areas, need to inform the exact location of the intrusion and the relevant information of the intruding object, as well as whether the protective net is intact while intercepting other objects. At present, ropes with early warning functions are mainly divided into three types. The first type is the sound and light alarm for breakage: a safety early warning rope (CN114960023A) is a smoke tube embedded in the rope skin during preparation. When the preset tension is reached, the smoke tube breaks and releases the smoke. The positioning accuracy is poor, it cannot be used a second time, and the cost is high; a safety early warning slow-bounce fatigue-resistant cable and its preparation process (CN112227096A) is a sacrificial alarm. When the alarm value is reached, the rope core and rope strands break successively, giving sound and visual signals, but the positioning accuracy is poor, and the cable completely loses its usability after the alarm, which can easily cause huge losses; the second type is an external sensor: an intelligent cable (CN207646512U), an intelligent cable containing a load sensor (CN205975174U) all place tension sensors at one end or in the middle of the rope. Due to the incomplete transmission of stress, the alarm accuracy of the part far away from the sensor is low, and the usage scenarios are limited, so it is not suitable for long-distance ropes; the third category is to detect changes in electrical signals: fracture warning rope based on carbon nanotube yarn (CN109972430B) carbon nanotubes are used as raw materials to prepare conductive yarns through overlapping and twisting. When the resistance of the conductive yarn is infinite, the conductive yarn will break, thereby playing a fracture warning role, but the subsequent conductor yarn does not have the function of continuous warning; a method for preparing a high-strength flexible tension sensing fiber rope (CN113737523A) has a complex manufacturing process, a long time consumption, and high cost, and is not suitable for large-scale use.

[0004] Therefore, technical personnel in this field urgently need to develop a net rope that is corrosion-resistant, durable, flexible, and has sensing and early warning functions to meet the needs of adapting to various environments. Summary of the Invention

[0005] The object of the present invention is to design a highly elastic intelligent warning net rope, so that the net rope can not only play the functions of blocking and intercepting, but also have a sensing function, and multiple highly elastic intelligent warning net ropes can be woven together to form an interception net to achieve a positioning function and play a warning effect.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A highly elastic intelligent warning net rope of the present invention includes a multi-layer structure rope and a sealing end connector connected together. The multi-layer structure rope includes a wrinkled protective layer, a braided reinforcement layer, a highly elastic isolation layer, and a liquid metal sensing layer arranged in sequence from the outside to the inside. The wrinkled protective layer wraps the outside of the braided reinforcement layer. The braided reinforcement layer is located outside the highly elastic isolation layer and constrains single or multiple highly elastic isolation layers to be closely arranged along the center. The inside of the highly elastic isolation layer is provided with a cavity of single or multiple cylinders arranged in a circular matrix along the center, and liquid metal is poured into the cavity to form the liquid metal sensing layer;

[0008] The sealing end connector is located at both ends of the multi-layer structure rope and includes a wire, a conductive sealing end glue, a metal connector, and a metal connector protective layer. Both ends of the multi-layer structure rope are connected to other devices through the metal connector. An elastic sealing gasket is arranged on the outer periphery of the end face where the metal connector is connected to other devices. The two end faces of the multi-layer structure rope and the inside of the metal connector are connected through the conductive sealing end glue. The wire is fixedly connected to the outside of the metal connector by coating the conductive sealing end glue. The metal connector protective layer is coated on the outer surface of the metal connector.

[0009] Preferably, the wrinkled protective layer is set to be circular, and the manufacturing materials include styrene-butadiene-styrene block copolymer, thermoplastic polyurethane, or hydrogenated styrene-butadiene block copolymer. The thickness of the wrinkled protective layer is 6 mm to 40 mm, the wrinkling amplitude of the wrinkled protective layer is 4 mm to 36 mm, and the wrinkling wavelength of the wrinkled protective layer is 0.5 mm to 30 mm; the surface of the wrinkled protective layer is subjected to superhydrophobic treatment as required to form a superhydrophobic layer.

[0010] Preferably, the material of the braided reinforcement layer is selected from synthetic fibers with excellent performance, including ultra-high molecular weight polyethylene fiber, high relative molecular weight polyethylene fiber, polyarylate fiber, para-aramid fiber, polyamide, polypropylene, or polyester fiber; the braided structure of the braided reinforcement layer is selected from a circular braided rope or a spiral braided rope structure according to requirements.

[0011] Preferably, the production materials of the high-elastic isolation layer include hydrogenated styrene-butadiene block copolymer, polycarbonate or silicone / aliphatic isocyanate; the high-elastic isolation layer is a hollow structure or a porous structure, and the hollow cavity or the porous cavity has a fiber axial penetration structure.

[0012] Preferably, the liquid metal sensing layer is formed by pouring liquid metal, and the liquid metal includes liquid gallium-indium-tin alloy, liquid gallium, liquid gallium-indium alloy or liquid bismuth-indium-tin metal.

[0013] Preferably, the wire is selected from conductive metal wires, including copper wires, aluminum wires or silver wires; the conductive end-sealing adhesive is selected from one-component room-temperature-curing conductive adhesives or multi-component conductive adhesives; the metal joint is selected from aluminum, magnesium or steel, and the interface form of the metal joint is a threaded interface or a straight plug-in type, Y-shaped or T-shaped socket; the elastic gasket is selected from ethylene propylene diene monomer rubber, nitrile rubber, chloroprene rubber or polytetrafluoroethylene; the metal joint protective layer is selected from water-based acrylic, water-based epoxy metal or water-based polyurethane.

[0014] Preferably, the diameter of the multi-layer structure rope is 1 cm to 15 cm, the load-bearing strength of the multi-layer structure rope reaches more than 70 kg, and the maximum deformation of the multi-layer structure rope is not less than 500%.

[0015] Preferably, a plurality of the multi-layer structure ropes are woven together to form an interception net, the ropes are divided into radial ropes and circumferential ropes, and a connection with the intelligent early warning system is established to jointly perform the mesh coordinate sensing function.

[0016] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0017] 1) The present invention breaks the breakpoint early warning mode of the existing intelligent early warning net rope, realizes the strain sensing early warning mode, not only alarms when the preset strain value is reached, but also can take protective measures in advance according to the strain sensing signal to avoid damage to the rope net, or collect data and record and analyze using the present invention;

[0018] 2) The sensing layer of the present invention abandons hard metal and carbon-based materials and selects liquid metal materials, which can produce stepless continuous deformation with the deformation of the rope net, can give a continuous linear electrical signal within the deformation range, and before the isolation layer breaks, the rope net will not break, only the resistance changes;

[0019] 3) The present invention has an ultra-high elongation rate and elasticity compared with traditional rope nets, can implement protection immediately, and the rope net of the present invention can recover to its original shape through good resilience after strain early warning, can be used repeatedly without replacement. Description of the Drawings

[0020] The present invention will be further described below with reference to the drawings.

[0021] Figure 1 Schematic diagram of a highly elastic intelligent warning net rope according to the present invention;

[0022] Figure 2 Front view sectional view of a highly elastic intelligent warning net rope according to the present invention;

[0023] Figure 3 Schematic diagram of the end - sealing connector of a highly elastic intelligent warning net rope according to the present invention.

[0024] Explanation of reference numerals: 1. Multi - layer structure rope; 101. Folded protective layer; 102. Braided reinforcement layer; 103. Highly elastic isolation layer; 104. Liquid metal sensing layer; 2. End - sealing connector; 201. Conducting wire; 202. Elastic sealing gasket; 203. Conductive end - sealing glue; 204. Metal joint; 205. Metal joint protective layer. Detailed implementation manners

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] As Figures 1-3 shown, a highly elastic intelligent warning net rope, which is used in connection with an intelligent warning system, includes a multi - layer structure rope 1 and an end - sealing connector 2 connected together. The multi - layer structure rope 1 includes a folded protective layer 101, a braided reinforcement layer 102, a highly elastic isolation layer 103, and a liquid metal sensing layer 104 arranged in sequence from the outside to the inside. The folded protective layer 101 wraps the outside of the braided reinforcement layer 102. The braided reinforcement layer 102 is located outside the highly elastic isolation layer 103 and constrains one or more highly elastic isolation layers 103 to be closely arranged along the center. Inside the highly elastic isolation layer 103, there are one or more cylindrical cavities arranged in a circular matrix along the center, and liquid metal is poured into the cavities to form the liquid metal sensing layer 104.

[0027] Specifically, the folded protective layer 101 is located on the outermost layer of the net rope, playing a protective role for the inner - layer materials, being wear - resistant, resistant to biological attachment, corrosion - resistant and insulating. Its folded structure endows the protective layer with high elastic resilience.

[0028] Specifically, the braided reinforcement layer 102 is located inside the folded protective layer 101, mainly bearing the force of the net rope, and its elongation at break under tension is lower than that of the highly elastic isolation layer.

[0029] Specifically, the high-elastic isolation layer 103 is located below the braided reinforcement layer 102, constructing a high-elastic through-structure cavity for the perfusion of the liquid metal sensing layer, and playing a role in isolating the liquid metal sensing layer from the outside world.

[0030] Specifically, the liquid metal sensing layer 104 is located in the cavity of the high-elastic isolation layer 103. When the cable is subjected to an external tensile force, the liquid metal sensing layer 104 deforms with the deformation of the cavity of the high-elastic isolation layer 103, causing a change in resistance, thereby playing a sensing role.

[0031] The end-connection heads 2 are located at both ends of the multi-layer structure cable 1, and include a wire 201, a conductive end-sealing adhesive 203, a metal joint 204, and a metal joint protective layer 205. The two ends of the multi-layer structure cable 1 are connected to other devices through the metal joint 204. An elastic sealing gasket 202 is provided on the outer periphery of the end face where the metal joint 204 is connected to other devices. The two end faces of the multi-layer structure cable 1 and the inner side of the metal joint 204 are connected through the conductive end-sealing adhesive 203. The wire 201 is fixedly connected to the outer side of the metal joint 204 by coating the conductive end-sealing adhesive 203. The metal joint protective layer 205 is coated on the outer surface of the metal joint 204.

[0032] The corrugated protective layer 101 is arranged in a circular ring shape, and the manufacturing materials include styrene-butadiene-styrene block copolymer, thermoplastic polyurethane, or hydrogenated styrene-butadiene block copolymer (SEBS), and has the advantages of wear resistance, anti-biological adhesion, insulation, and corrosion resistance.

[0033] The thickness of the corrugated protective layer 101 is 6 mm to 40 mm, the corrugation amplitude of the corrugated protective layer 101 is 4 mm to 36 mm, and the corrugation wavelength of the corrugated protective layer 101 is 0.5 mm to 30 mm. The net ropes are heat-treated to have a corrugated structure.

[0034] The surface of the corrugated protective layer 101 is subjected to superhydrophobic treatment as required to form a superhydrophobic layer. The superhydrophobic layer is selected from polydimethylsiloxane (PDMS), methyltrimethoxysilane (MTMS), 1H,1H,2H,2H-perfluorooctyltriethoxysilane (POTS), 1H,1H,2H,2H-perfluorododecyltriethoxysilane (PFDTES), polyvinylidene fluoride (PVDF), or polyaniline (PANI) / polystyrene (PS). The superhydrophobic layer can isolate water outside the rope net, thereby extending the service life of the rope net.

[0035] The material of the braided reinforcement layer 102 is selected as synthetic fibers with excellent performance, including ultra-high molecular weight polyethylene fibers, high molecular weight polyethylene fibers, polyarylate fibers, para-aramid fibers, polyamides, polypropylenes or polyester fibers; the braided structure of the braided reinforcement layer 102 is selected as a circular braided rope or a spiral braided rope structure according to requirements. The ultra-high molecular weight synthetic fiber material has high strength, wear resistance and good elasticity, and the braided reinforcement layer can ensure that the net rope deforms and is not easily broken.

[0036] The production material of the high-elastic isolation layer 103 includes hydrogenated styrene-butadiene block copolymer, polycarbonate or siloxane / aliphatic isocyanate, which has ultra-high elasticity and thermoplasticity, and has the characteristics of insulation, water repellency and corrosion resistance.

[0037] The high-elastic isolation layer 103 is a hollow structure or a porous structure. The hollow cavity or the porous cavity has a fiber axial penetration structure. The elongation at break of the high-elastic isolation layer 103 reaches more than 500%. Under the condition of reaching the maximum deformation rate, the elastic recovery rate of the high-elastic isolation layer 103 reaches more than 90%.

[0038] The liquid metal sensing layer 104 is formed by pouring liquid metal. The liquid metal includes liquid gallium indium tin alloy, liquid gallium, liquid gallium indium alloy or liquid bismuth indium tin metal, and is completely poured into the cavity reserved by the high-elastic isolation layer without gaps. The electrical signal generated by the liquid metal sensing layer has a warning function, and at the same time has a high deformation amount and a low modulus.

[0039] The wire 201 is selected as a conductive metal wire, including copper wire, aluminum wire or silver wire; the conductive end-sealing adhesive 203 is selected as a one-component room-temperature curing conductive adhesive or a multi-component conductive adhesive. The one-component room-temperature curing conductive adhesive is selected from alcohol-free type, carboxylic acid-free type, ketoxime-free type, amide-free type, amine-free type, hydroxylamine-free type or acetone-free type. The multi-component conductive adhesive is a multi-component conductive adhesive using silver, copper, aluminum, tin, nickel, gold, germanium, amorphous carbon or graphite as conductive fillers and epoxy resin, acrylate resin, phenolic resin, polyurethane resin or polyimide resin as the main binder. The conductive end-sealing adhesive plays the role of sealing the cavity of the net rope and conducting electricity.

[0040] The metal joint 204 is selected as aluminum, magnesium or steel. The interface form of the metal joint 204 is a threaded interface or a straight plug-in type, Y-shaped or T-shaped socket. The joint interface form of the metal joint is diverse, which can meet different net rope connection requirements.

[0041] The elastic gasket 202 is selected as ethylene propylene diene monomer rubber, nitrile rubber, chloroprene rubber or polytetrafluoroethylene, which plays a sealing role in the interface part with other metal joints, preventing pollutants or liquids from entering the inside of the metal joint and thus affecting the normal operation of the net rope.

[0042] The protective layer 205 of the metal joint is made of waterborne acrylic, waterborne epoxy metal or waterborne polyurethane, which plays the roles of insulation, isolation and protection, such as waterproofing, corrosion resistance, and preventing biological attachment.

[0043] The diameter of the multi-layer structure cable 1 is 1 cm to 15 cm, the load-bearing strength of the multi-layer structure cable 1 is more than 70 kg, and the maximum deformation of the multi-layer structure cable 1 is not less than 500%.

[0044] Multiple multi-layer structure cables 1 are woven together to form an interception net. The ropes are divided into radial ropes and weft ropes, and a connection with an intelligent early warning system is established to jointly perform the mesh coordinate sensing function. Mathematical models and physical models related to current are established, and the abnormal current values of the warp ropes and the abnormal current values of the weft ropes are combined to achieve the positioning function.

[0045] In one of the embodiments,

[0046] The corrugated protective layer 101 is formed by corrugating a 2.5-mm-thick thermoplastic polyurethane (TPU) film. The corrugation wavelength is 2.0 mm, and the corrugation amplitude is 20.0 mm. The outer surface is treated with polydimethylsiloxane (PDMS) to form a superhydrophobic layer, achieving high elasticity and surface superhydrophobicity, thereby protecting the internal structure of the net rope;

[0047] The braided reinforcement layer 102 is made by helically braiding ultra-high molecular weight polyethylene fibers (UHWMPE). It is located under the corrugated protective layer, and the braided thickness is 1.0 cm, mainly responsible for bearing the force of the net rope;

[0048] The high-elastic isolation layer 103 is formed by melting the core of hydrogenated styrene-butadiene block copolymer (SEBS) to form nine through cavities arranged in a circular matrix along the center. The diameter of each cavity is 0.6 mm, and the overall diameter is 4.0 mm, forming the high-elastic isolation layer 103, which plays the role of isolating the liquid metal sensing layer 104 from the outside; Subsequently, the operator pours liquid gallium-indium alloy into the reserved cavity of the high-elastic isolation layer 103 to form the liquid metal sensing layer 104; As Figure 2 shown, nineteen treated hydrogenated styrene-butadiene block copolymers are closely arranged along the center, located under the braided reinforcement layer 102, and finally the multi-layer structure cable 1 can be obtained.

[0049] The wire is connected to the multi-layered structure rope 1 with an aluminum wire; the conductive end-sealing adhesive is a multi-component conductive adhesive with silver as the filler and epoxy resin as the main binder; the metal joint is made of aluminum and adopts a direct plug-in interface; the metal joint protective layer uses water-based polyurethane as the coating; the elastic gasket uses polytetrafluoroethylene as the gasket and is located on the metal joint to play a sealing role. Finally, a highly elastic intelligent warning net rope can be obtained.

[0050] The diameter of the net rope obtained by the present invention is 8.5 cm, the maximum deformation is 1100%, it can bear a maximum tensile force of more than 70 kg, the sensing performance of the liquid metal sensing layer is stable, and by analyzing the resistance change of the liquid metal sensing layer, the stress condition of the rope can be monitored. By braiding multiple net ropes into an interception net, positioning effects, monitoring the intrusion speed and approximate shape of an object, etc. can be achieved.

[0051] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0052] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. A highly elastic intelligent warning net rope, which is used in connection with an intelligent warning system, is characterized in that It includes a multi-layered structure cable rope (1) and a sealed end connector (2) connected together. The multi-layered structure cable rope (1) includes a corrugated protective layer (101), a braided reinforcement layer (102), a highly elastic isolation layer (103), and a liquid metal sensing layer (104) arranged in sequence from the outside to the inside. The corrugated protective layer (101) wraps around the outside of the braided reinforcement layer (102). The braided reinforcement layer (102) is located outside the highly elastic isolation layer (103) and constrains single or multiple highly elastic isolation layers (103) to be closely arranged along the center. Inside the highly elastic isolation layer (103), there are single or multiple cylindrical cavities arranged in a circular matrix along the center, and liquid metal is poured inside the cavities to form the liquid metal sensing layer (104). The sealed end connector (2) is located at both ends of the multi-layered structure cable rope (1) and includes a wire (201), a conductive sealing glue (203), a metal joint (204), and a metal joint protective layer (205). Both ends of the multi-layered structure cable rope (1) are connected to other devices through the metal joint (204). An elastic sealing gasket (202) is arranged on the outer periphery of the end face where the metal joint (204) is connected to other devices. The two end faces of the multi-layered structure cable rope (1) are connected to the inside of the metal joint (204) through the conductive sealing glue (203). The wire (201) is fixedly connected to the outside of the metal joint (204) by coating the conductive sealing glue (203). The metal joint protective layer (205) is coated on the outer surface of the metal joint (204). Multiple multi-layered structure cable ropes (1) are woven together to form an interception net. The ropes are divided into radial ropes and weft ropes, and a connection with an intelligent early warning system is established to jointly perform a mesh coordinate sensing function. A mathematical model and a physical model related to current are established, and the abnormal current values of the warp ropes and the abnormal current values of the weft ropes are combined to achieve a positioning function. The corrugated protective layer (101) is set as a circular ring, and the manufacturing materials include styrene-butadiene-styrene block copolymer, thermoplastic polyurethane, or hydrogenated styrene-butadiene block copolymer. The thickness of the corrugated protective layer (101) is 6 mm to 40 mm, the corrugation amplitude of the corrugated protective layer (101) is 4 mm to 36 mm, and the corrugation wavelength of the corrugated protective layer (101) is 0.5 mm to 30 mm. The surface of the corrugated protective layer (101) is subjected to superhydrophobic treatment as required to form a superhydrophobic layer.

2. The highly elastic intelligent warning net rope according to claim 1, characterized in that, The material of the braided reinforcement layer (102) is selected from synthetic fibers with excellent performance, including ultra-high molecular weight polyethylene fiber, high relative molecular weight polyethylene fiber, polyarylate fiber, para-aramid fiber, polyamide, polypropylene, or polyester fiber. The braided structure of the braided reinforcement layer (102) is selected as a circular braided rope or a spiral braided rope structure according to requirements.

3. The highly elastic intelligent warning net rope according to claim 1, characterized in that, The production materials of the high-elastic isolation layer (103) include hydrogenated styrene-butadiene block copolymer, polycarbonate or siloxane / aliphatic isocyanate; the high-elastic isolation layer (103) is of a hollow structure or a porous structure, and the hollow structure or the porous structure has a fiber axial penetration structure.

4. The highly elastic intelligent warning net rope according to claim 1, characterized in that, The liquid metal sensing layer (104) is formed by pouring liquid metal, and the liquid metal includes liquid gallium-indium-tin alloy, liquid gallium, liquid gallium-indium alloy or liquid bismuth-indium-tin metal.

5. A highly elastic intelligent warning net rope according to claim 1, characterized in that, The wire (201) is selected from conductive metal wires, including copper wires, aluminum wires or silver wires; the conductive sealing adhesive (203) is selected from one-component room-temperature curing conductive adhesives or multi-component conductive adhesives; The metal joint (204) is selected from aluminum, magnesium or steel, and the interface form of the metal joint (204) is a threaded interface or a straight plug-in type, a Y-shaped or a T-shaped socket; the elastic gasket (202) is selected from ethylene propylene diene monomer rubber, nitrile rubber, chloroprene rubber or polytetrafluoroethylene; the metal joint protective layer (205) is selected from waterborne acrylic, waterborne epoxy metal or waterborne polyurethane.

6. The high-elastic intelligent warning net rope according to claim 1, characterized in that The diameter of the multi-layer structure cable (1) is 1 cm to 15 cm, the load-bearing strength of the multi-layer structure cable (1) reaches more than 70 kg, and the maximum deformation of the multi-layer structure cable (1) is not less than 500%.

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