CN115394474A - Coaxial composite cable of signal transmission for lifting of gate - Google Patents
Coaxial composite cable of signal transmission for lifting of gate Download PDFInfo
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- CN115394474A CN115394474A CN202211228072.2A CN202211228072A CN115394474A CN 115394474 A CN115394474 A CN 115394474A CN 202211228072 A CN202211228072 A CN 202211228072A CN 115394474 A CN115394474 A CN 115394474A
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- 230000008054 signal transmission Effects 0.000 title claims abstract description 14
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- 238000003756 stirring Methods 0.000 claims description 32
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- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 claims description 16
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- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
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Abstract
The invention discloses a signal transmission coaxial composite cable for lifting a gate, which comprises a cable core, wherein the cable core comprises six voice wires and three signal wires, and each voice wire comprises a voice wire conductor and a polyolefin insulating layer coated outside the voice wire conductor; the signal wire comprises a signal wire conductor, and a foamed polyethylene insulating layer, a tinned copper wire single shielding layer and a fine aramid yarn wrapping layer are sequentially coated outside the signal wire conductor from inside to outside; twisting six voice wires and three signal wires to form a cable core, lapping two layers of aluminum-plastic composite tape shielding layers outside the cable core, leading the conductive surface of the aluminum-plastic composite tape shielding layer to face inwards, and longitudinally dragging a ground wire which is a tinned copper wire drainage wire; the aluminum-plastic composite belt total shielding layer is coated with a tinned copper wire woven total shielding layer, a polyurethane sheath is extruded outside the tinned copper wire woven total shielding layer, and the outer surface of the polyurethane sheath is in a tooth shape. The invention has strong anti-interference capability and high safety, and meets the requirements of soft and flexible performance and wear resistance.
Description
Technical Field
The invention relates to the technical field, in particular to a signal transmission coaxial composite cable for lifting a gate.
Background
The gate is a channel blocking device, and the requirements on cables in the process of controlling the gate to automatically lift are different from the requirements on common cables. Electromagnetic waves for controlling the action of the gate machine are longitudinally transmitted in the cable and simultaneously radiate electromagnetic waves to the outside, and the outside electromagnetic fields can also interfere the inside of the cable; meanwhile, a signal transmission cable used by the gate needs to have stronger flexibility when in use, and can be flexibly moved or dragged along with the lifting of the gate. Therefore, how to improve the anti-interference performance, the use safety and the wear-resistant flexibility of the cable becomes especially important.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a signal transmission coaxial composite cable for lifting a gate.
The technical scheme adopted by the invention is as follows:
a signal transmission coaxial composite cable for lifting a gate machine comprises a cable core, wherein the cable core comprises six voice wires and three signal wires, and each voice wire comprises a voice wire conductor and a polyolefin insulating layer coated outside the voice wire conductor; the signal line comprises a signal line conductor, and a foamed polyethylene insulating layer, a tinned copper wire single shielding layer and a fine aramid yarn wrapping layer are sequentially coated outside the signal line conductor from inside to outside; a plurality of thin aramid yarn ropes are filled among the six voice wires and the three signal wires, the six voice wires and the three signal wires are twisted to form a cable core, two layers of aluminum-plastic composite tape shielding layers are lapped and wrapped outside the cable core, a ground wire is longitudinally dragged inwards by a conductive surface of the aluminum-plastic composite tape shielding layer, and the ground wire is a tinned copper wire drainage wire; the aluminum-plastic composite belt total shielding layer is coated with a tinned copper wire woven total shielding layer, the tinned copper wire woven total shielding layer is externally extruded with a polyurethane sheath, and the outer surface of the polyurethane sheath is in a tooth shape.
Furthermore, the voice line conductor and the signal line conductor are twisted conductors made of tin-plated alloy copper foil wires. The single tinned copper wire shielding layer is formed by winding a tinned copper wire with the diameter of 0.008 mm.
Further, the material of the foamed polyethylene insulating layer comprises the following raw materials in parts by weight:
7-10 parts of AC foaming agent, 130-150 parts of high-density polyethylene, 10-15 parts of lignin, 10-20 parts of 4-dimethylaminopyridine, 30-40 parts of 2-bromo-2-methylpropionyl bromide, 2-4 parts of triglycidyl isocyanurate, 40-50 parts of trifluoroethyl methacrylate, 0.5-1 part of tert-butyl p-diphenol, 6-10 parts of nano silicon dioxide, 1-2 parts of cuprous chloride and 2-3 parts of triethylamine.
The preparation method of the foamed polyethylene insulating layer comprises the following steps:
(1) Adding triglycidyl isocyanurate into dimethylformamide with the weight of 80-90 times of that of the triglycidyl isocyanurate, uniformly stirring, adding trifluoroethyl methacrylate, and uniformly stirring to obtain a monomer dispersion liquid;
(2) Adding lignin into N, N-dimethylformamide with the weight 30-40 times of that of the lignin, sending the lignin into a stirring kettle, adding 4-dimethylaminopyridine, uniformly stirring, placing the mixture into ice-water bath, adding 2-bromo-2-methylpropanoyl bromide, standing for 3-5 hours, discharging, stirring for 15-20 hours at normal temperature, carrying out vacuum filtration, washing a filter cake, and carrying out vacuum drying at 50-55 ℃ to obtain an initiator;
(3) Mixing triethylamine and nano-silica, adding the mixture into N, N-dimethylformamide with the weight 30-40 times of that of the mixture, and performing ultrasonic treatment for 1-2 hours to obtain a silicon dispersion liquid;
(4) Adding an initiator into the pre-monomer dispersion liquid, feeding into a reaction kettle, introducing nitrogen, adjusting the temperature of the reaction kettle to be 70-80 ℃, adding cuprous bromide, stirring for reaction for 3-4 hours, adding the silicon dispersion liquid, raising the temperature to be 120-130 ℃, stirring for reaction for 1.5-2 hours, discharging, and removing dimethylformamide by rotary evaporation to obtain a modified filler;
(5) Mixing the modified filler with high-density polyethylene and tert-butyl-p-diphenol, uniformly stirring, feeding into an extruder, performing melt extrusion, and cooling to obtain premixed master batches;
(6) Mixing the premixed master batch with an ac foaming agent, heating for 1-2 hours by steam at 120-130 ℃, and cooling to normal temperature to obtain the product.
The invention has the advantages that:
in the invention, the insulating layers of the signal line and the voice line are respectively made of foamed polyethylene material and low-smoke halogen-free flame-retardant polyolefin material, thereby greatly improving the flame-retardant property and ensuring certain flexibility;
according to the invention, various shielding structures are adopted, and the tinned copper wire single shielding layer, the two layers of aluminum-plastic composite tape shielding layers and the tinned copper wire braided total shielding layer further ensure that signals are not interfered by the outside and are transmitted smoothly, so that the anti-interference capability is strong;
in the invention, a tinned copper wire drainage wire is additionally arranged, so that the use safety of the cable in a gate machine which is a place with large stream of people is ensured;
in the invention, the wear-resistant flexible flame-retardant polyurethane sheath is adopted, and the outer surface of the polyurethane sheath is in a tooth shape, so that the cable meets the requirements of flexible flexibility and wear resistance.
The foaming polyethylene insulating layer added in the invention takes lignin as a raw material to prepare a cellulose-based ATRP initiator, and then initiates trifluoroethyl methacrylate to polymerize, thereby improving the toughness and strength of the polymer.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: the voice wire comprises a voice wire conductor 1, a polyolefin insulating layer 2, a signal wire conductor 3, a foamed polyethylene insulating layer 4, a tinned copper wire independent shielding layer 5, a fine aramid yarn wrapping layer 6, a fine aramid yarn rope 7, an aluminum-plastic composite tape shielding layer 8, a ground wire 9, a tinned copper wire braided total shielding layer 10 and a polyurethane sheath 11.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1.
As shown in fig. 1, a signal transmission coaxial composite cable for lifting a gate machine comprises a cable core, wherein the cable core comprises six voice wires and three signal wires, and each voice wire comprises a voice wire conductor 1 and a polyolefin insulating layer 2 coated outside the voice wire conductor; the signal wire comprises a signal wire conductor 3, and a foamed polyethylene insulating layer 4, a tinned copper wire single shielding layer 5 and a fine aramid yarn wrapping layer 6 are sequentially coated outside the signal wire conductor 3 from inside to outside; a plurality of fine aramid yarn ropes 7 are filled among six voice wires and three signal wires, the six voice wires and the three signal wires are twisted to form a cable core, the cable core is externally overlapped and wrapped with two layers of aluminum-plastic composite tape shielding layers 8, the conductive surface of each aluminum-plastic composite tape shielding layer 8 faces inwards and longitudinally drags a ground wire 9, and the ground wire 9 is a tinned copper wire drainage wire; the total shielding layer 8 of the aluminum-plastic composite belt is coated with a tinned copper wire woven total shielding layer 10, the tinned copper wire woven total shielding layer 10 is externally extruded with a polyurethane sheath 11, and the outer surface of the polyurethane sheath 11 is toothed.
The voice line conductor 1 and the signal line conductor 3 both adopt a tinned alloy copper foil wire stranded conductor. The single tinned copper wire shielding layer 5 is formed by winding a tinned copper wire with the diameter of 0.008 mm.
The foamed polyethylene insulating layer 4 comprises the following raw materials in parts by weight:
The preparation method of the foamed polyethylene insulating layer 4 comprises the following steps:
(1) Adding triglycidyl isocyanurate into dimethylformamide with the weight 80 times that of the triglycidyl isocyanurate, uniformly stirring, adding trifluoroethyl methacrylate, and uniformly stirring to obtain a monomer dispersion liquid;
(2) Adding lignin into N, N-dimethylformamide with the weight 30 times of that of the lignin, sending the lignin into a stirring kettle, adding 4-dimethylaminopyridine, uniformly stirring, placing the mixture into an ice-water bath, adding 2-bromo-2-methylpropanoyl bromide, standing for 3 hours, discharging, stirring for 15 hours at normal temperature, carrying out vacuum filtration, washing a filter cake with water, and carrying out vacuum drying at 55 ℃ to obtain an initiator;
(3) Mixing triethylamine and nano-silica, adding the mixture into N, N-dimethylformamide with the weight 30 times that of the mixture, and performing ultrasonic treatment for 1 hour to obtain a silicon dispersion liquid;
(4) Adding an initiator into the pre-monomer dispersion liquid, feeding into a reaction kettle, introducing nitrogen, adjusting the temperature of the reaction kettle to 70 ℃, adding cuprous bromide, stirring for reaction for 3 hours, adding the silicon dispersion liquid, raising the temperature to 120 ℃, stirring for reaction for 1.5 hours, discharging, and removing dimethylformamide by rotary evaporation to obtain a modified filler;
(5) Mixing the modified filler with high-density polyethylene and tert-butyl-p-diphenol, uniformly stirring, feeding into an extruder, performing melt extrusion, and cooling to obtain premixed master batches;
(6) Mixing the premixed master batch with an ac foaming agent, heating for 1 hour by steam at 120 ℃, and cooling to normal temperature to obtain the product.
Example 2.
As shown in fig. 1, a signal transmission coaxial composite cable for lifting a gate machine comprises a cable core, wherein the cable core comprises six voice wires and three signal wires, and each voice wire comprises a voice wire conductor 1 and a polyolefin insulating layer 2 coated outside the voice wire conductor; the signal line comprises a signal line conductor 3, and a foamed polyethylene insulating layer 4, a tinned copper wire single shielding layer 5 and a fine aramid yarn wrapping layer 6 are sequentially coated outside the signal line conductor 3 from inside to outside; a plurality of thin aramid yarn ropes 7 are filled among the six voice wires and the three signal wires, the six voice wires and the three signal wires are twisted to form a cable core, the cable core is wrapped with two layers of aluminum-plastic composite tape shielding layers 8 in an overlapped mode, the conductive surface of each aluminum-plastic composite tape shielding layer 8 faces inwards, a ground wire 9 is longitudinally dragged, and the ground wire 9 is a tinned copper wire drainage wire; the total shielding layer 8 of the aluminum-plastic composite belt is coated with a tinned copper wire woven total shielding layer 10, the tinned copper wire woven total shielding layer 10 is externally extruded with a polyurethane sheath 11, and the outer surface of the polyurethane sheath 11 is in a tooth shape.
The voice line conductor 1 and the signal line conductor 3 both adopt a tinned alloy copper foil wire stranded conductor. The single tinned copper wire shielding layer 5 is formed by winding a tinned copper wire with the diameter of 0.008 mm.
The foamed polyethylene insulating layer comprises the following raw materials in parts by weight:
10 parts of an AC foaming agent, 150 parts of high-density polyethylene, 15 parts of lignin, 20 parts of 4-dimethylaminopyridine, 40 parts of 2-bromo-2-methylpropionyl bromide, 4 parts of triglycidyl isocyanurate, 50 parts of trifluoroethyl methacrylate, 1 part of tert-butyl-p-diphenol, 10 parts of nano-silica, 2 parts of cuprous chloride and 3 parts of triethylamine.
The preparation method of the foamed polyethylene insulating layer comprises the following steps:
(1) Adding triglycidyl isocyanurate into dimethylformamide with the weight 90 times of that of the triglycidyl isocyanurate, uniformly stirring, adding trifluoroethyl methacrylate, and uniformly stirring to obtain a monomer dispersion liquid;
(2) Adding lignin into N, N-dimethylformamide 40 times of the weight of lignin, sending into a stirring kettle, adding 4-dimethylaminopyridine, uniformly stirring, placing into an ice-water bath, adding 2-bromo-2-methylpropanoyl bromide, standing for 5 hours, discharging, stirring for 20 hours at normal temperature, carrying out vacuum filtration, washing a filter cake, and carrying out vacuum drying at 55 ℃ to obtain an initiator;
(3) Mixing triethylamine and nano-silica, adding the mixture into N, N-dimethylformamide with the weight 40 times that of the mixture, and performing ultrasonic treatment for 2 hours to obtain a silicon dispersion liquid;
(4) Adding an initiator into the pre-monomer dispersion liquid, feeding into a reaction kettle, introducing nitrogen, adjusting the temperature of the reaction kettle to 80 ℃, adding cuprous bromide, stirring for reaction for 4 hours, adding the silicon dispersion liquid, raising the temperature to 130 ℃, stirring for reaction for 2 hours, discharging, and removing dimethylformamide by rotary evaporation to obtain a modified filler;
(5) Mixing the modified filler with high-density polyethylene and tert-butyl-p-diphenol, uniformly stirring, feeding into an extruder, performing melt extrusion, and cooling to obtain premixed master batches;
(6) Mixing the premixed master batch with an ac foaming agent, heating for 1-2 hours by steam at 130 ℃, and cooling to normal temperature to obtain the product.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A signal transmission coaxial composite cable for lifting a gate machine is characterized by comprising a cable core, wherein the cable core comprises six voice wires and three signal wires, and each voice wire comprises a voice wire conductor (1) and a polyolefin insulating layer (2) coated outside the voice wire conductor; the signal wire comprises a signal wire conductor (3), and the signal wire conductor (3) is coated with a foamed polyethylene insulating layer (4), a tinned copper wire single shielding layer (5) and a fine aramid yarn wrapping layer (6) from inside to outside in sequence; a plurality of thin aramid yarn ropes (7) are filled among the six voice wires and the three signal wires, the six voice wires and the three signal wires are twisted to form a cable core, two layers of aluminum-plastic composite tape shielding layers (8) are lapped and wound outside the cable core, the conductive surface of each aluminum-plastic composite tape shielding layer (8) faces inwards and longitudinally drags a ground wire (9), and the ground wire (9) is a tinned copper wire drainage wire; the aluminum-plastic composite belt total shielding layer (8) is coated with a tinned copper wire woven total shielding layer (10), the tinned copper wire woven total shielding layer (10) is externally extruded with a polyurethane sheath (11), and the outer surface of the polyurethane sheath (11) is in a tooth shape.
2. The coaxial composite cable for signal transmission of gate lifter according to claim 1, wherein the voice line conductor (1) and the signal line conductor (3) are twisted conductors of tin-plated alloy copper foil.
3. The signal transmission coaxial composite cable for lifting of the gate machine according to claim 1, wherein the tin-plated copper wire single shielding layer (5) is formed by winding a tin-plated copper wire with a diameter of 0.008 mm.
4. The signal transmission coaxial composite cable for lifting of the gate machine according to claim 1, wherein the foamed polyethylene insulating layer is made of the following raw materials in parts by weight:
7-10 parts of AC foaming agent, 130-150 parts of high-density polyethylene, 10-15 parts of lignin, 10-20 parts of 4-dimethylaminopyridine, 30-40 parts of 2-bromo-2-methylpropionyl bromide, 2-4 parts of triglycidyl isocyanurate, 40-50 parts of trifluoroethyl methacrylate, 0.5-1 part of tert-butyl p-diphenol, 6-10 parts of nano silicon dioxide, 1-2 parts of cuprous chloride and 2-3 parts of triethylamine.
5. The signal transmission coaxial composite cable for lifting of the gate machine according to claim 1, wherein the preparation method of the foamed polyethylene insulation layer comprises the following steps:
(1) Adding triglycidyl isocyanurate into dimethylformamide with the weight of 80-90 times of that of the triglycidyl isocyanurate, uniformly stirring, adding trifluoroethyl methacrylate, and uniformly stirring to obtain a monomer dispersion liquid;
(2) Adding lignin into N, N-dimethylformamide with the weight 30-40 times of that of the lignin, sending the lignin into a stirring kettle, adding 4-dimethylaminopyridine, uniformly stirring, placing the mixture into an ice water bath, adding 2-bromo-2-methylpropanoyl bromide, standing for 3-5 hours, discharging, stirring for 15-20 hours at normal temperature, carrying out vacuum filtration, washing a filter cake with water, and carrying out vacuum drying at 50-55 ℃ to obtain an initiator;
(3) Mixing triethylamine and nano-silica, adding the mixture into N, N-dimethylformamide with the weight 30-40 times of that of the mixture, and performing ultrasonic treatment for 1-2 hours to obtain a silicon dispersion liquid;
(4) Adding an initiator into the pre-monomer dispersion liquid, feeding into a reaction kettle, introducing nitrogen, adjusting the temperature of the reaction kettle to be 70-80 ℃, adding cuprous bromide, stirring for reaction for 3-4 hours, adding the silicon dispersion liquid, raising the temperature to be 120-130 ℃, stirring for reaction for 1.5-2 hours, discharging, and removing dimethylformamide by rotary evaporation to obtain a modified filler;
(5) Mixing the modified filler with high-density polyethylene and tert-butyl-p-diphenol, uniformly stirring, feeding into an extruder, performing melt extrusion, and cooling to obtain premixed master batches;
(6) Mixing the premixed master batch with an ac foaming agent, heating for 1-2 hours by steam at 120-130 ℃, and cooling to normal temperature to obtain the product.
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| CN203721277U (en) * | 2014-02-13 | 2014-07-16 | 安徽华联电缆集团有限公司 | Double-shield intrinsic safe thermocouple compensating flexible electric cable |
| CN205900167U (en) * | 2016-07-07 | 2017-01-18 | 苏州意华电工有限公司 | Low -smoke zero -halogen flame -retardant cable |
| CN207367659U (en) * | 2017-09-26 | 2018-05-15 | 扬州市金阳光电缆有限公司 | A kind of intrinsic safety type flexible data transmission cable |
| CN208889345U (en) * | 2018-12-04 | 2019-05-21 | 安徽省众和电仪科技有限公司 | Tension high flexibility compound inslation RS485 cable |
| CN214588104U (en) * | 2021-05-06 | 2021-11-02 | 安徽光神航天电子技术有限公司 | Nuclear magnetic pulse resistant CAN cable |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203721277U (en) * | 2014-02-13 | 2014-07-16 | 安徽华联电缆集团有限公司 | Double-shield intrinsic safe thermocouple compensating flexible electric cable |
| CN205900167U (en) * | 2016-07-07 | 2017-01-18 | 苏州意华电工有限公司 | Low -smoke zero -halogen flame -retardant cable |
| CN207367659U (en) * | 2017-09-26 | 2018-05-15 | 扬州市金阳光电缆有限公司 | A kind of intrinsic safety type flexible data transmission cable |
| CN208889345U (en) * | 2018-12-04 | 2019-05-21 | 安徽省众和电仪科技有限公司 | Tension high flexibility compound inslation RS485 cable |
| CN214588104U (en) * | 2021-05-06 | 2021-11-02 | 安徽光神航天电子技术有限公司 | Nuclear magnetic pulse resistant CAN cable |
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