CN210489267U - Light traveling cable for ultra-high-speed ladder - Google Patents
Light traveling cable for ultra-high-speed ladder Download PDFInfo
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- CN210489267U CN210489267U CN201921213723.4U CN201921213723U CN210489267U CN 210489267 U CN210489267 U CN 210489267U CN 201921213723 U CN201921213723 U CN 201921213723U CN 210489267 U CN210489267 U CN 210489267U
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Abstract
The utility model relates to a trailing cable for a light high-speed ladder, which comprises a control cable, a safety loop cable, a power cable, a video coaxial cable, a tensile rope, a tearing line and a trailing cable extruding layer for extruding and wrapping the control cable, the safety loop cable, the power cable, the video coaxial cable, the tensile rope and the tearing line together; the center of the control cable, the center of the safety loop cable, the center of the power cable, the center of the video coaxial cable and the center of the tensile rope are positioned on the same straight line parallel to the upper surface and the lower surface of the extrusion layer of the traveling cable. The utility model discloses the retinue cable that the high-speed ladder of light type of the same kind of specification was used compares with current high-speed ladder retinue cable, and weight per meter can alleviate 28 + -2%, and the high-speed elevator of 15 people's loads can alleviate load 160 ~ 381kg like this, and the energy consumption is practiced thrift 32%, and wire rope, traction wheel, traction motor's cost all has the decline in the overall configuration design of high-speed elevator.
Description
Technical Field
The utility model relates to a retinue cable technical field for the high-speed ladder, the retinue cable that in particular to light type high-speed ladder was used.
Background
The lifting height of the traveling cable for the ultra-high speed elevator in the elevator industry is more than 300 meters, the number of the cable cores is not less than 70-150 cores, and the weight of each meter of the cable is 2-3.5kg, namely the weight of the cable which needs to bear 600 plus 1050kg when the elevator car runs. If the load of the car is 1200KG (rated 15 persons), the self weight of the car is 1200 KG. In order to overcome the unbalance of the car load, the counterweight is added on the opposite side of the car by about 1500-1725kg, so the running of the car can be smooth, which means that the idle energy consumption is large when the elevator runs.
SUMMERY OF THE UTILITY MODEL
For the useless work energy consumption that reduces the elevator, the utility model provides a retinue cable that light type high-speed ladder that stable in cable structure just accorded with hypervelocity operation elevator and use was used. The weight of the trailing cable for the light high-speed elevator with the same specification is reduced by 28 +/-2% per meter, so that the high-speed elevator with 15 loads can reduce the load by 160 plus 381kg, the energy consumption is saved by 18-32%, and the cost of a traction sheave and a traction machine is reduced by designing a steel wire rope in the integral configuration of the elevator.
In order to realize the purpose of the utility model, the utility model discloses the technical scheme who adopts as follows:
a trailing cable for a light-weight high-speed ladder comprises at least one control cable, at least one safety loop cable, at least one power cable, at least one video coaxial cable, at least one tensile rope, at least one tear line and a trailing cable extrusion layer for extruding and wrapping the at least one control cable, the at least one safety loop cable, the at least one power cable, the at least one video coaxial cable, the at least one tensile rope and the at least one tear line together; the cable is characterized in that the center of the at least one control cable, the center of the at least one safety loop cable, the center of the at least one power cable, the center of the at least one video coaxial cable and the center of the at least one tensile rope are positioned on the same straight line parallel to the upper surface and the lower surface of the trailing cable extrusion layer.
In a preferred embodiment of the present invention, the control cable is two units, the safety circuit cable is six units, and the power cable is two units; the video coaxial cable is one unit, the tensile rope is two units, and the tear line is four units; the video coaxial cable is positioned in the middle of the trailing cable for the light-weight high-speed ladder, two unit control cables, six unit safety loop cables, two unit power cables, two unit tensile ropes and four unit tearing lines are symmetrically distributed on the left side and the right side of the video coaxial cable by taking the video coaxial cable as a center, wherein the two unit power cables are positioned on the outermost side of the trailing cable for the light-weight high-speed ladder, the two unit control cables are adjacent to the video coaxial cable, three unit safety loop cables, one unit tensile rope and two unit tearing lines are distributed between the control cables on the left side and the right side and the power cables, one unit tensile rope and two unit tearing lines are positioned between the two unit safety loop cables, the two unit tearing lines and one unit tensile rope are positioned on the same vertical trailing cable extrusion layer, The two unit tearing lines are distributed on the straight line of the lower surface in an up-and-down symmetrical mode by taking the tensile rope as the center.
In a preferred embodiment of the present invention, the cabling direction of one unit control cable, three unit safety loop cables and one unit power cable on the left side of the video coaxial cable is left direction, the lay length is X, if the number of the cores in one unit control cable, three unit safety loop cables and one unit power cable on the left side of the video coaxial cable is odd number, the strand stranding direction of the cores in one unit control cable, three unit safety loop cables and one unit power cable on the left side of the video coaxial cable is left direction, and the strand stranding pitch is 20d-k × d; if the number of the cores in one unit control cable, three unit safety loop cables and one unit power cable which are positioned on the left side of the video coaxial cable is even, the stranding directions of the cores in one unit control cable, three unit safety loop cables and one unit power cable which are positioned on the left side of the video coaxial cable are all right, and the stranding pitch of the strands is 20-25d + k + d; if the number of the wire cores in one unit control cable, three unit safety loop cables and one unit power supply cable which are positioned on the left side of the video coaxial cable is odd, the stranding direction of the wire cores in one unit control cable, three unit safety loop cables and one unit power supply cable which are positioned on the right side of the video coaxial cable is right, and the stranding pitch of the wire bundles is 20d-k X d; if the number of the cores in one unit control cable, three unit safety loop cables and one unit power supply cable which are positioned on the right side of the video coaxial cable is even, the strand stranding directions of the cores in one unit control cable, three unit safety loop cables and one unit power supply cable which are positioned on the right side of the video coaxial cable are all in the left direction, and the strand stranding pitch is (20-25) d + k x d, wherein d is the outer diameter of a stranded conductor; k: cabling factor, unit: mm.
In a preferred embodiment of the present invention, the cabling direction of one unit control cable, three unit safety loop cables and one unit power cable on the left side of the video coaxial cable is right, the lay length is X, if the number of the cores in one unit control cable, three unit safety loop cables and one unit power cable on the left side of the video coaxial cable is odd, the strand stranding direction of the cores in one unit control cable, three unit safety loop cables and one unit power cable on the left side of the video coaxial cable is right, and the strand stranding pitch is 20d-k d; if the number of the cores in one unit control cable, three unit safety loop cables and one unit power supply cable which are positioned on the left side of the video coaxial cable is even, the stranding directions of the cores in one unit control cable, three unit safety loop cables and one unit power supply cable which are positioned on the left side of the video coaxial cable are all left directions, and the stranding pitch of the strands is (20-25) d + k + d; if the number of the cores in one unit control cable, three unit safety loop cables and one unit power cable on the left side of the video coaxial cable is odd, the strand stranding directions of the cores in one unit control cable, three unit safety loop cables and one unit power cable on the right side of the video coaxial cable are all in the left direction, and the strand stranding pitch of the cores in one unit control cable, three unit safety loop cables and one unit power cable on the right side of the video coaxial cable is 20d-k X d; if the number of the cores in one unit control cable, three unit safety loop cables and one unit power cable which are positioned on the right side of the video coaxial cable is even, the strand stranding direction of the cores in one unit control cable, three unit safety loop cables and one unit power cable which are positioned on the right side of the video coaxial cable is right, and the strand stranding pitch is (20-25) d + k x d, wherein d is the outer diameter of a stranded conductor; k: cabling factor, unit: mm.
The utility model discloses a preferred embodiment two unit control cables, six unit safety circuit cables, two unit power cable's center all is filled there is the packing strip, the center of packing strip is the high strength aramid fiber rope, and one deck SEBS base thermal contraction elastomer is crowded again.
In a preferred embodiment of the present invention, the peripheries of the two unit control cables are wrapped with aluminum foil shielding layers.
In a preferred embodiment of the present invention, the distance e1 between the anti-pulling rope and the safety loop cable on the left and right sides thereof is 1.5mm, the shortest distance between the upper and lower surfaces of the control cable, the safety loop cable, the power cable, the video coaxial cable, the anti-pulling rope and the wrapping layer of the traveling cable is 1.5mm, and the distance between the two unit power cables and the side surface of the wrapping layer of the traveling cable is 1.8 mm.
In a preferred embodiment of the present invention, the distance between the tensile strand and the extrusion-coated side of the trailing cable is 1/4 times the width of the trailing cable for the lightweight escalator.
In a preferred embodiment of the present invention, the trailing cable extrusion layer is formed by extrusion coating of an SEBS-based heat-shrinkable elastomer.
In a preferred embodiment of the present invention, the SEBS-based thermal shrinkage elastomer is prepared by mixing polystyrene as a base material with polyethylene-butylene copolymer, and then adding white oil or naphthenic oil, a lubricant, a nano-scale expanded graphite type flame retardant, a fluorine-containing anti-dripping flame retardant synergist, and a coupling agent.
In a preferred embodiment of the present invention, the tensile cord is a steel wire rope.
Owing to adopted above technical scheme, the utility model discloses compare with the retinue cable that current high-speed ladder was used, have following advantage:
1. the method meets the requirements of 300 ten thousand times of deflection angle (strictly standard) of less than or equal to 10 degrees, cable running stability test and cable running life accelerated fatigue test in the T/CEA022-2019 traveling cable for elevators.
2. The tensile rope can meet the requirement that the tensile force of the cable with 8 times of free hanging length of the finished cable is not broken, and the apparent density of the material of the extrusion coating of the trailing cable is 65-70% of that of the conventional PVC material. Other characteristics of the material of the extrusion layer of the traveling cable meet the performance parameters of JR-70 and HR-70 in GB/T8815-2008.
3. The utility model discloses have good weatherability, heat resistance, ageing resistance, compression deformation resistance and excellent mechanical properties. The key performance parameters are as follows:
3.1. better low temperature resistance, the brittle temperature is less than or equal to minus 60 ℃, the high temperature resistance reaches 105 ℃, and the decomposition temperature is more than 270 ℃ under the oxygen atmosphere.
3.2 excellent aging resistance, the performance reduction rate is less than 10 percent when the glass is aged in an artificial accelerated aging box for one week, and the performance reduction is less than 10 percent when the glass is aged by ozone (38 ℃) for 100 hours.
3.3 Excellent Electrical Properties with a dielectric constant of 1.3x10 at 1KHz-4And 2.3x10 at 1MHz-4(ii) a Volume resistivity at 20 ℃ of 9x1016Ω.cm；
3.4 meets the environmental protection requirement, is nontoxic and meets the FDA requirement.
3.5 apparent Density of about 0.91g/cm3。
The utility model discloses the retinue cable that the high-speed ladder of light type of the same kind of specification was used compares with current high-speed ladder retinue cable, and weight per meter can alleviate 28 + -2%, and the high-speed elevator of 15 people's loads can alleviate load 160 ~ 381kg like this, and the energy consumption is practiced thrift 32%, and wire rope, traction wheel, traction motor's cost all has the decline in the overall configuration design of high-speed elevator.
Drawings
Fig. 1 is a schematic radial section view of the trailing cable for the light high-speed ladder of the present invention.
Fig. 2 is a schematic cross-sectional view of the filler strip of the present invention.
Detailed Description
The present invention is described in detail below with reference to the attached drawings and the detailed description.
Referring to fig. 1, there is shown a lightweight trailing cable for a high-speed ladder, including two unit control cables 10, 10a, six unit safety loop cables 20, 30, 40, 20a, 30a, 40a, two unit power cables 50, 50a, one unit video coaxial cable 60, two unit tensile cords 70, 70a, four unit tear lines 81, 82, 81a, 82a, and a trailing cable extrusion layer 90 for extruding the two unit control cables 10, 10a, six unit safety loop cables 20, 30, 40, 20a, 30a, 40a, two unit power cables 50, 50a, one unit video coaxial cable 60, two unit tensile cords 70, 70a, four unit tear lines 81, 82, 81a, 82a together. Of course, the number of the control cable, the safety loop cable, the power cable, the video coaxial cable, the tensile rope and the tear line is not limited to the above number, and can be increased or decreased according to the needs of each unit.
The utility model is characterized in that:
the center of the two unit control cables 10, 10a, the center of the six unit safety loop cables 20, 30, 40, 20a, 30a, 40a, the center of the two unit power cables 50, 50a, the center of one unit video coaxial cable 60, and the centers of the two unit tensile cords 70, 70a are located on the same line parallel to the upper and lower surfaces 91, 92 of the trailing cable extrusion 90.
The video coaxial cable 60 is located in the middle of the trailing cable for the lightweight type high-speed ladder, two unit control cables 10, 10a, six unit safety loop cables 20, 30, 40, 20a, 30a, 40a, two unit power cables 50, 50a, two unit tensile ropes 70, 70a and four unit tear lines 81, 82, 81a, 82a are respectively and symmetrically distributed on the left and right sides of the video coaxial cable 60 by taking the video coaxial cable 60 as the center, wherein the two unit power cables 50, 50a are located on the left and right outermost sides of the trailing cable for the lightweight type high-speed ladder, the two unit control cables 10, 10a are adjacent to the video coaxial cable 60, three unit safety loop cables 20, 30, 40, 20a, 30a, 40a and one unit tensile rope 70 are respectively distributed between the control cables 10, 10a on the left and right sides and the power cables 50, 50a, 70a, two element tear lines 81, 82, 81a, 82a, one element stretch resistant strand 70 and two element tear lines 81, 82 located between the two element safety loop cables 30, 40, and one element stretch resistant strand 70a and two element tear lines 81a, 82a located between the two element safety loop cables 30a, 40 a.
Two unitary ripcords 81, 82 and one unitary tensile strand 70 are positioned on the same straight line perpendicular to the upper and lower surfaces 91, 92 of the trailing cable extrusion layer 90 and the two unitary ripcords 81, 82 are distributed vertically symmetrically about the tensile strand 70. Two element tear lines 81a, 82a and one element tensile strand 70a are positioned on the same straight line perpendicular to the upper and lower surfaces 91, 92 of the trailing cable extrusion layer 90, and the two element tear lines 81a, 82a are vertically symmetrically distributed about the tensile strand 70 a.
In addition, the utility model discloses a two unit control cables 10, 10a, six unit safety circuit cables 20, 30, 40, 20a, 30a, 40a, two core bundle silk transposition modes in unit power cable 50, 50a have following two kinds:
the first twisting method is as follows:
if the cabling directions of one unit control cable 10, three unit safety loop cables 20, 30, 40 and one unit power supply cable 50 which are positioned on the left side of the video coaxial cable 60 are all in the left direction and the lay length is X, if the numbers of the cores in the one unit control cable 10, the three unit safety loop cables 20, 30, 40 and the one unit power supply cable 50 which are positioned on the left side of the video coaxial cable 60 are all odd, the strand stranding directions of the cores in the one unit control cable 10, the three unit safety loop cables 20, 30, 40 and the one unit power supply cable 50 which are positioned on the left side of the video coaxial cable 60 are all in the left direction and the strand stranding pitch is 20d-k × d;
if the number of the cores in one unit control cable 10, three unit safety loop cables 20, 30, 40 and one unit power cable 50 on the left side of the video coaxial cable 60 is even, the strand stranding directions of the cores in one unit control cable 10, three unit safety loop cables 20, 30, 40 and one unit power cable 50 on the left side of the video coaxial cable 60 are all right, and the strand stranding pitch is (20-25) d + k x d.
If the cable forming directions of one unit control cable 10a, three unit safety loop cables 20a, 30a, 40a and one unit power supply cable 50a on the right side of the video coaxial cable 60 are all right directions, and the lay length is X, if the numbers of the cores in one unit control cable 10a, three unit safety loop cables 20a, 30a, 40a and one unit power supply cable 50a on the left side of the video coaxial cable 60 are all odd numbers, the strand stranding directions of the cores in one unit control cable 10a, three unit safety loop cables 20a, 30a, 40a and one unit power supply cable 50a on the right side of the video coaxial cable 60 are all right directions, and the strand stranding pitch is 20d-k × d;
if the number of the cores in one unit control cable 10a, three unit safety loop cables 20a, 30a, 40a and one unit power cable 50a on the right side of the video coaxial cable 60 is even, the strand stranding directions of the cores in one unit control cable 10a, three unit safety loop cables 20a, 30a, 40a and one unit power cable 50a on the right side of the video coaxial cable 60 are all left directions, and the strand stranding pitch is (20-25) d + k, wherein d is the outer diameter of the strand stranded conductor; k: cabling factor, unit: mm.
The second twisting method is as follows:
cabling directions of one unit control cable 10, three unit safety loop cables 20, 30, 40 and one unit power supply cable 50 which are positioned on the left side of the video coaxial cable 60 are all right directions, the lay length is X, if the numbers of the cores in the one unit control cable 10, the three unit safety loop cables 20, 30, 40 and the one unit power supply cable 50 which are positioned on the left side of the video coaxial cable 60 are all odd numbers, the strand stranding directions of the cores in the one unit control cable 10, the three unit safety loop cables 20, 30, 40 and the one unit power supply cable 50 which are positioned on the left side of the video coaxial cable 60 are all right directions, and the strand stranding pitch is 20d-k × d;
if the number of the cores in one unit control cable 10, three unit safety loop cables 20, 30 and 40 and one unit power cable 50 which are positioned on the left side of the video coaxial cable 60 is even, the strand stranding directions of the cores in one unit control cable 10, three unit safety loop cables 20, 30 and 40 and one unit power cable 50 which are positioned on the left side of the video coaxial cable 60 are all left, and the strand stranding pitch is 20-25d + k + d;
if the cable forming directions of one unit control cable 10a, three unit safety loop cables 20a, 30a, 40a and one unit power supply cable 50a on the right side of the video coaxial cable 60 are all in the left direction, and the lay length is X, if the numbers of the cores in one unit control cable 10a, three unit safety loop cables 20a, 30a, 40a and one unit power supply cable 50a on the left side of the video coaxial cable 60 are all odd, the strand stranding directions of the cores in one unit control cable 10a, three unit safety loop cables 20a, 30a, 40a and one unit power supply cable 50a on the right side of the video coaxial cable 60 are all in the left direction, and the strand stranding pitch is 20d-k × d;
if the number of the cores in one unit control cable 10a, three unit safety loop cables 20a, 30a, 40a and one unit power cable 50a on the right side of the video coaxial cable 60 is even, the strand stranding directions of the cores in one unit control cable 10a, three unit safety loop cables 20a, 30a, 40a and one unit power cable 50a on the right side of the video coaxial cable 60 are all right, and the strand stranding pitch is (20-25) d + k, wherein d is the outer diameter of the strand stranded conductor; k: cabling factor, unit: mm.
The utility model discloses a sinle silk bundle silk in two unit control cable 10, 10a, six unit safety circuit cables 20, 30, 40, 20a, 30a, 40a, two unit power cable 50, 50a adopts above-mentioned transposition mode, and the hank is to the stress that produces when eliminating the conductor bundle hank, has improved the resistant performance of buckling of conductor, ensures that the finished cable deflection angle is less than or equal to 10, has guaranteed the stationarity when the cable moves.
The utility model discloses it has filler strip 11, 11a, 21, 31, 41, 21a, 31a, 41a, 51a all to fill at the center of two unit control cables 10, 10a, six unit safety circuit cables 20, 30, 40, 20a, 30a, 40a, two unit power cables 50, 50 a. Referring to fig. 2, the center of the filler strip 11, 11a, 21, 31, 41, 21a, 31a, 41a, 51a is a high-strength aramid rope 11b, 11ab, 21b, 31b, 41b, 21ab, 31ab, 41ab, 51b, 51ab, and is further extruded with a layer of SEBS-based heat shrinkable elastomer 11c, 11ac, 21c, 31c, 41c, 21ac, 31ac, 41ac, 51c, 51 ac. Such filler strips have the advantage of being lightweight and resistant to tension.
The peripheries of the two unit control cables 10 and 10a are coated with aluminum foil shielding layers 10d and 10ad, so that the anti-interference capacity of internal signals of the two unit control cables 10 and 10a can be improved.
After the weight of the cable is light, the tensile rope specification of the bearing element is reduced, and the tensile ropes 70 and 70a are steel wire ropes. The distance between tensile strands 70, 70a and sides 93, 94 of trailing cable extrusion 90 is 1/4 of the trailing cable width for a lightweight, high-speed ladder. Meanwhile, the distance e1 between the tensile ropes 70 and 70a and the safety loop cables 30, 40, 30a and 40a on the left and right sides is reduced, so that safety is guaranteed, and weight is reduced. e1 is 1.5 mm.
The minimum distance between the two element control cables 10, 10a, the six element safety loop cables 20, 30, 40, 20a, 30a, 40a, the two element power cables 50, 50a, the one element video coaxial cable 60, the two element tensile cords 70, 70a and the upper and lower surfaces 91, 92 of the trailing cable extrusion 90, i.e., the minimum thickness e2 of the trailing cable extrusion 90, is 1.5 mm. The distance e3 between the two unit power cables 50, 50a and the side surfaces 93, 94 of the trailing cable extrusion 90 is 1.8 mm.
The trailing cable extrusion layer 90 is formed by extrusion of an SEBS (styrene-ethylene-butadiene-styrene) based heat-shrinkable elastomer. The SEBS-based thermal shrinkage elastomer is prepared by mixing polystyrene serving as a base material with polyethylene-butylene copolymer, and then adding white oil or naphthenic oil (a plurality of) into the mixture, a lubricant, a nano-scale expanded graphite type flame retardant, a fluorine-containing anti-dripping flame retardant synergist and a coupling agent into the mixture for mixing. Wherein: 100 parts of polystyrene, 80 parts of polyethylene-butylene copolymer, 20 parts of white oil or 16 parts of naphthenic oil, 5 parts of lubricant, 12 parts of nanoscale expanded graphite type flame retardant, 3 parts of fluorine-containing anti-dripping flame retardant synergist and 5 parts of coupling agent.
The plasticated granules do not contain unsaturated double bonds, so that the plasticated granules have good weather resistance, heat resistance, aging resistance, compression deformation resistance and excellent mechanical properties. The key performance parameters are as follows:
(1) better low temperature resistance, the brittle temperature is less than or equal to minus 60 ℃, the high temperature resistance reaches 105 ℃, and the decomposition temperature is more than 270 ℃ under the oxygen atmosphere.
(2) Excellent ageing resistance, the performance reduction rate of the product is less than 10 percent after ageing in an artificial accelerated ageing oven for one week, and the performance reduction rate of the product is less than 10 percent after ozone ageing (38 ℃) for 100 hours.
(3) Excellent electrical properties, with a dielectric constant of 1.3x10 at 1KHz-4And 2.3x10 at 1MHz-4(ii) a Volume resistivity at 20 ℃ of 9x1016Omega.cm; (4) meets the requirements of environmental protection, is nontoxic and meets the requirements of FDA.
(5) The apparent density is about 0.91g/cm3。
The trailing cable for the light high-speed elevator in the specific embodiment meets the requirements of 300 ten thousand times of deflection angles (strictly on the standard) of T/CEA022 and 2019 trailing cable for the elevator, wherein the deflection angle is less than or equal to 10 degrees, the cable running stability test and the cable running life accelerated fatigue test;
The utility model discloses the retinue cable that the high-speed ladder of light type of the same kind of specification was used compares with current high-speed ladder retinue cable, and weight per meter can alleviate 28 + -2%, and the high-speed elevator of 15 people's loads can alleviate load 160 ~ 381kg like this, and the energy consumption is practiced thrift 32%, and wire rope, traction wheel, traction motor's cost all has the decline in the overall configuration design of high-speed elevator.
Claims (10)
1. A trailing cable for a light-weight high-speed ladder comprises at least one control cable, at least one safety loop cable, at least one power cable, at least one video coaxial cable, at least one tensile rope, at least one tear line and a trailing cable extrusion layer for extruding and wrapping the at least one control cable, the at least one safety loop cable, the at least one power cable, the at least one video coaxial cable, the at least one tensile rope and the at least one tear line together; the cable is characterized in that the center of the at least one control cable, the center of the at least one safety loop cable, the center of the at least one power cable, the center of the at least one video coaxial cable and the center of the at least one tensile rope are positioned on the same straight line parallel to the upper surface and the lower surface of the trailing cable extrusion layer.
2. A lightweight trailing cable for a high-speed ladder as claimed in claim 1, wherein the control cable is two units, the safety loop cable is six units, and the power cable is two units; the video coaxial cable is one unit, the tensile rope is two units, and the tear line is four units; the video coaxial cable is positioned in the middle of the trailing cable for the light-weight high-speed ladder, two unit control cables, six unit safety loop cables, two unit power cables, two unit tensile ropes and four unit tearing lines are symmetrically distributed on the left side and the right side of the video coaxial cable by taking the video coaxial cable as a center, wherein the two unit power cables are positioned on the outermost side of the trailing cable for the light-weight high-speed ladder, the two unit control cables are adjacent to the video coaxial cable, three unit safety loop cables, one unit tensile rope and two unit tearing lines are distributed between the control cables on the left side and the right side and the power cables, one unit tensile rope and two unit tearing lines are positioned between the two unit safety loop cables, the two unit tearing lines and one unit tensile rope are positioned on the same vertical trailing cable extrusion layer, The two unit tearing lines are distributed on the straight line of the lower surface in an up-and-down symmetrical mode by taking the tensile rope as the center.
3. The lightweight traveling cable for a high-speed ladder according to claim 2, wherein cabling directions of a unit control cable, three unit safety loop cables and a unit power cable positioned on the left side of the video coaxial cable are all left, a lay length is X, if the number of cores in the unit control cable, the three unit safety loop cables and the unit power cable positioned on the left side of the video coaxial cable is odd, a strand stranding direction of the cores in the unit control cable, the three unit safety loop cables and the unit power cable positioned on the left side of the video coaxial cable is left, and a strand stranding pitch is 20d-k*d; if the number of the cores in one unit control cable, three unit safety loop cables and one unit power cable which are positioned on the left side of the video coaxial cable is even, the stranding directions of the cores in one unit control cable, three unit safety loop cables and one unit power cable which are positioned on the left side of the video coaxial cable are all right, and the stranding pitch of the strands is (20-25) d + k*d; one unit control cable and three unit safety loop circuits on the right side of the video coaxial cableThe cabling direction of the cable and the unit power cable is right, the lay length is X, if the number of the cable cores in one unit control cable, three unit safety loop cables and one unit power cable which are positioned on the left side of the video coaxial cable is odd, the strand stranding direction of the cable cores in one unit control cable, three unit safety loop cables and one unit power cable which are positioned on the right side of the video coaxial cable is right, and the strand stranding pitch is 20d-k*d; if the number of the cores in one unit control cable, three unit safety loop cables and one unit power cable on the right side of the video coaxial cable is even, the stranding directions of the cores in one unit control cable, three unit safety loop cables and one unit power cable on the right side of the video coaxial cable are all left, and the stranding pitch of the strands is (20-25) d + k*d, wherein d is the outer diameter of the stranded conductor; k: cabling factor, unit: mm.
4. The lightweight traveling cable for a high-speed ladder according to claim 2, wherein cabling directions of a unit control cable, three unit safety loop cables and a unit power cable positioned on the left side of the video coaxial cable are all right, the lay length is X, if the number of cores in the unit control cable, the three unit safety loop cables and the unit power cable positioned on the left side of the video coaxial cable is odd, the strand stranding directions of the cores in the unit control cable, the three unit safety loop cables and the unit power cable positioned on the left side of the video coaxial cable are all right, and the strand stranding pitch is 20d-k*d; if the number of the cores in one unit control cable, three unit safety loop cables and one unit power cable which are positioned on the left side of the video coaxial cable is even, the stranding directions of the cores in one unit control cable, three unit safety loop cables and one unit power cable which are positioned on the left side of the video coaxial cable are all in the left direction, and the stranding pitch of the strands is (20-25) d + k*d; one unit control cable and three unit control cables positioned on the right side of the video coaxial cableThe cabling directions of the unit safety loop cables and the unit power cable are both leftward, the lay length is X, if the number of the wire cores in one unit control cable, three unit safety loop cables and one unit power cable which are positioned on the left side of the video coaxial cable is odd, the strand stranding directions of the wire cores in one unit control cable, three unit safety loop cables and one unit power cable which are positioned on the right side of the video coaxial cable are leftward, and the strand stranding pitch is 20d-k*d; if the number of the cores in one unit control cable, three unit safety loop cables and one unit power cable on the right side of the video coaxial cable is even, the strand stranding directions of the cores in one unit control cable, three unit safety loop cables and one unit power cable on the right side of the video coaxial cable are all right, and the strand stranding pitch is (20-25) d + k*d, wherein d is the outer diameter of the stranded conductor; k: cabling factor, unit: mm.
5. The traveling cable for a light-weight high-speed ladder according to any one of claims 2 to 4, wherein filler strips are filled in the centers of the two unit control cables, the six unit safety loop cables and the two unit power cables, the centers of the filler strips are made of high-strength aramid ropes, and a layer of SEBS-based thermal-shrinkable elastomer is extruded.
6. A lightweight walk-behind cable for a high-speed ladder according to claim 5, wherein the outer peripheries of both unit control cables are covered with an aluminum foil shield.
7. The trailing cable for a lightweight high-speed ladder according to claim 6, wherein the distance e1 between the tensile cord and the safety loop cables on the left and right sides thereof is 1.5mm, the shortest distance between the control cable, the safety loop cable, the power cable, the video coaxial cable, the tensile cord and the upper and lower surfaces of the trailing cable extrusion layer is 1.5mm, and the distance between two unit power cables and the side surface of the trailing cable extrusion layer is 1.8 mm.
8. The trailing cable for a lightweight high-speed ladder of claim 7, wherein the distance between the tensile strand and the sides of the trailing cable extrusion is 1/4 times the width of the trailing cable for a lightweight high-speed ladder.
9. The trailing cable for a light-weight high-speed ladder according to claim 8, wherein the trailing cable extrusion layer is formed by extrusion coating of a SEBS-based heat-shrinkable elastomer.
10. The lightweight traveling cable for a high-speed ladder according to claim 9, wherein the SEBS-based thermally shrinkable elastomer is prepared by mixing polystyrene as a base material with a polyethylene-butylene copolymer, and then adding white oil or naphthenic oil, a lubricant, a nano-expanded graphite type flame retardant, a fluorine-containing anti-dripping flame retardant synergist, and a coupling agent.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110491553A (en) * | 2019-07-30 | 2019-11-22 | 上海贝恩科电缆有限公司 | A kind of light weight type ultrahigh speed ladder trailing cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491553A (en) * | 2019-07-30 | 2019-11-22 | 上海贝恩科电缆有限公司 | A kind of light weight type ultrahigh speed ladder trailing cable |
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