CN210238293U - Heat-insulation fireproof hot-extrusion polyethylene parallel steel wire inhaul cable - Google Patents
Heat-insulation fireproof hot-extrusion polyethylene parallel steel wire inhaul cable Download PDFInfo
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- CN210238293U CN210238293U CN201920387634.5U CN201920387634U CN210238293U CN 210238293 U CN210238293 U CN 210238293U CN 201920387634 U CN201920387634 U CN 201920387634U CN 210238293 U CN210238293 U CN 210238293U
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Abstract
The utility model relates to a thermal-insulated, parallel steel wire cable of fire prevention type hot extrusion polyethylene belongs to bridge building steel wire cable field, and this cable is parallel steel wire bundle, thermal-insulated rope layer, winding band layer, hot extrusion polyethylene layer from inside to outside in proper order, thermal-insulated rope circle comprises the thermal-insulated rope around steel wire bundle arrangement round, thermal-insulated rope and steel wire bundle parallel arrangement, and thermal-insulated rope layer surrounds the steel wire bundle in the centre completely and does not expose, and thermal-insulated rope layer and steel wire bundle are stereotyped through winding the band, and the winding band around the thermal-insulated rope constitutes winding band layer, hot extrusion polyethylene layer is one deck or multilayer. The heat insulation rope layer can also be wound on the periphery of the shaped steel wire bundle in a tightly winding mode. Or the heat-preservation and heat-insulation belt is adopted to wrap the periphery of the steel wire bundle, and the steel wire bundle is thoroughly isolated from the outside through the heat-insulation rope/belt layer, so that the steel wire bundle is effectively protected and prevented from being burnt.
Description
Technical Field
The utility model relates to a bridge cable structure, more specifically relate to parallel steel wire cable structure with thermal-insulated, fire prevention function.
Background
The construction of the bridge develops at a high speed, after the bridge is put into use, the fire accidents of the bridge also happen frequently, and according to statistics of data of the fire and explosion accidents of the bridge in the world, the number of the bridges collapsed due to fire is 2.7 times that collapsed due to earthquake every year. In recent years, the causes of fire accidents are various, for example, the protective layer of part of the guy cable is locally damaged due to the sudden ignition of the lamp decoration on the guy cable; the vehicle on the traveling bridge suddenly generates spontaneous combustion, so that the stay cable is damaged at high temperature, the polyethylene (HDPE) outer sheath pipe at the lower part of the stay cable is completely burnt, and the high-strength steel wire is exposed; the electric welding operation at the top of the stay cable tower causes welding slag to fall to the white HDPE outer protective sleeve on the outer surface of the stay cable below the top of the tower, thus causing the fire of the stay cable.
On the other hand, in the engineering practice, the main body stress member of the inhaul cable is a steel wire bundle, one end of the main body stress member is anchored on a bridge tower with the height of hundreds of meters, and the other end of the main body stress member is anchored on a main beam with a relatively low position. Because the two anchoring ends have larger height difference, under the action of environmental factors such as sunlight, wind and the like, the stay cable is in a temperature field with non-uniform change, and the characteristic of the cable structure can be influenced to a certain extent by the temperature change. The temperature difference can cause the temperature change of the steel wire of the stay cable body along with the change of the environmental temperature, and the steel wire of the stay cable body is extended or shortened, thereby influencing the structure. For an ultra-long stay cable, the temperature difference is more prominent.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a novel thermal-insulated, fire prevention type hot extrusion polyethylene parallel steel wire cable structure is provided to above-mentioned prior art. The steel wire matrix of the cable body is protected from being affected by fire; the temperature difference of the whole length of the stay rope is reduced.
The utility model discloses a cable structure as follows:
the heat-insulation and fire-proof hot-extrusion polyethylene parallel steel wire inhaul cable sequentially comprises parallel steel wire bundles, a heat-insulation rope layer, a wrapping belt layer and a hot-extrusion polyethylene layer from inside to outside, wherein the heat-insulation rope ring is formed by arranging a circle of heat-insulation ropes around the steel wire bundles, the heat-insulation ropes and the steel wire bundles are arranged in parallel, the heat-insulation rope layer and the steel wire bundles are shaped through the wrapping belt, the wrapping belt layer is formed by wrapping the wrapping belt around the heat-insulation ropes, and the hot-extrusion polyethylene layer is one or more layers.
Preferably, the insulation rope of the insulation rope layer completely surrounds the steel wire bundle in the middle and is not exposed.
The manufacturing method of the inhaul cable comprises the following steps: the steel wire and the heat insulation rope are fed together, the heat insulation rope is parallel to the steel wire, the heat insulation rope is arranged on the outer layer of the steel wire bundle, the heat insulation rope surrounds the whole steel wire bundle until the steel wire rope is not exposed, then a winding belt is used for winding and shaping to obtain a bare cable, and then one or more polyethylene layers are hot extruded on the periphery of the bare cable to obtain a cable body; the cable body blanking method comprises the steps of firstly stripping two hot extrusion polyethylene layers at two ends to expose bare cables, stripping off wrapping belts to expose heat insulation ropes, cutting the exposed heat insulation ropes to expose steel wire bundles, then anchoring the steel wire bundles into an anchorage device to obtain stay cables, carrying out tensioning inspection on the stay cables, and coiling and packaging the stay cables after the stay cables are qualified.
The heat-insulation and fire-proof hot-extrusion polyethylene parallel steel wire inhaul cable comprises a inhaul cable body, a heat-insulation rope layer, an outer wrapping belt layer and a hot-extrusion polyethylene layer, wherein a parallel steel wire bundle, an inner wrapping belt layer, the heat-insulation rope layer, the outer wrapping belt layer and the hot-extrusion polyethylene layer are sequentially arranged from inside to outside, and the parallel steel wire bundle is wound and shaped through a wrapping belt to form the inner wrapping belt layer; the heat insulation rope layer is formed by spirally winding heat insulation ropes on the periphery of the steel wire bundle, the coils are tightly arranged, the heat insulation rope layer is wound and shaped through a winding belt to form an outer winding belt layer, and the hot extrusion polyethylene layer is one or more layers.
The manufacturing method of the inhaul cable comprises the following steps: twisting steel wires and winding a winding belt in a full-length mode, tightly winding a heat insulation rope on the outer layer, leaving no gap between coils of the heat insulation rope, winding and wrapping the belt in a full-length mode on the outer periphery of the heat insulation rope to form a bare rope, and hot extruding one or more polyethylene layers on the outer periphery of the bare rope to obtain a rope body; the method comprises the following steps of firstly stripping hot extrusion polyethylene layers at two ends of a cable body to expose a bare cable, stripping off a wrapping belt to expose a heat insulation rope, cutting the exposed heat insulation rope, removing the wrapping belt wrapping the periphery of a steel wire bundle to expose the steel wire bundle, anchoring the steel wire bundle into an anchorage device to obtain a stay cable, carrying out tensioning inspection on the stay cable, and coiling and packaging after the stay cable is qualified.
The application also discloses a heat-insulation and fireproof hot-extrusion polyethylene parallel steel wire inhaul cable, wherein a inhaul cable body sequentially comprises a parallel steel wire bundle, a wrapping belt layer, a heat insulation layer and a hot-extrusion polyethylene layer from inside to outside, and the parallel steel wire bundle is wound and shaped by the wrapping belt layer to form the inner wrapping belt layer; the heat insulation layer is composed of a heat insulation belt wound on the periphery of the steel wire bundle, and the hot extrusion polyethylene layer is one or more layers.
The manufacturing method of the inhaul cable comprises the following steps: twisting the steel wire and winding a winding belt in full length, tightly winding a heat insulation belt on the outer layer to obtain a bare cable, and hot-extruding one or more polyethylene layers on the outer periphery of the bare cable to obtain a cable body; the cable body blanking firstly strips the hot extrusion polyethylene layers at two ends to expose bare cables, strips the exposed heat insulation belts, removes the wrapping belts wrapped on the peripheries of the steel wire bundles to expose the steel wire bundles, anchors the steel wire bundles into the anchorage device to obtain the stay cable, performs tensioning inspection on the stay cable, and coils and packages the stay cable after the stay cable is qualified.
The heat insulation rope/belt comprises the following components:
1) basalt heat insulation rope
The asphalt is high-temperature resistant and low-temperature resistant (-269-650 ℃), when the asphalt is mixed with asphalt at high temperature, the material performance cannot be thermally degraded, and the asphalt cannot be subjected to chemical or dissolving reaction with the asphalt, so that the low-temperature hardening and high-temperature softening conditions of the asphalt are effectively changed. The waterproof performance is excellent, the water absorption rate is low, the moisture absorption rate is less than 0.1%, and the absorption capacity of the waterproof paint does not change along with time. The elastic modulus (93-110 GPa), the tensile strength (2800-3800 MPa), the specific tensile strength of 2-2.5 times of that of metal, and the tensile strength is kept stable at 100-250 ℃. High sound absorption coefficient (0.9-0.99) and low heat conductivity coefficient (0.030-0.038) w/m.
2) High silica fire-proof heat-insulation rope
The high silica fireproof heat insulating rope is woven with three layers of high purity glass fiber, and is one kind of heat resisting soft special crystal fiber fabric based on SiO2The content reaches more than 96 percent. The product has excellent heat-resisting property, can be used in the environment of 1000 ℃ for a long time, has the instant heat-resisting temperature of 1400 ℃, and adopts Na2O-B2O3-SiO2The ternary system glass raw material has the softening point temperature of 1700 ℃, the product has excellent chemical stability and good dielectric property, the softening point of the high silica fireproof heat insulation rope is close to 1700 ℃, the high silica fireproof heat insulation rope can be used for a long time in the environment of 1000 ℃, the heat conductivity coefficient is low, the chemical stability is good, the electrical insulation property is good, and the ternary system glass raw material is a non-asbestos product, is free from pollution and has stable processability.
3) Heat-insulation belt
Made of 96% pure silica fiber, with the silica side backed with a pressure sensitive adhesive for ease of installation. The adhesive is decomposed at high temperature, and the gum type silicon dioxide heat-resistant winding band can be perfectly attached to a hose, a cable or a pipeline; the coating can be well coated on a different-type pipeline or equipment by matching with a back adhesive type design, and has remarkable high-temperature resistance and heat insulation effects; the high-temperature-resistant steel can work for a long time in an environment of 982 ℃ and can bear 1650 ℃ in a short time; the method is widely applied to the protection of cables and hoses in the ultra-high temperature working condition environment in the industries of metallurgy, electric power, coal and the like, and ensures the safe and smooth operation.
Compared with the prior art, the utility model has the advantages of: the outer layer of the steel wire bundle is provided with a circle of heat insulation rope/belt (winding or filling) and is wound with the high-strength polyester fiber belt, then the high-density polyethylene is hot extruded, and the formed rope body can still play a role in blocking external heat and protecting stressed steel wires even if the outer sheath of the stay rope is melted and ignited under the condition that a fire disaster occurs.
Drawings
Fig. 1 is a schematic radial cross-sectional view of a stay cable body according to embodiment 1 of the present invention;
fig. 2 is an axial cross-sectional view of a stay cable body according to embodiment 1 of the present invention;
fig. 3 is a schematic radial cross-sectional view of a stay cable body according to embodiment 2 of the present invention;
fig. 4 is an axial cross-sectional view of a cable body of an embodiment 2 of the present invention;
fig. 5 is a schematic radial cross-sectional view of a cable body according to embodiment 3 of the present invention;
fig. 6 is an axial cross-sectional view of a cable body according to embodiment 3 of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
Example 1
A heat-insulation fireproof hot-extrusion polyethylene parallel steel wire inhaul cable sequentially comprises a parallel steel wire bundle 1, a heat-insulation rope layer 2, a wrapping belt layer 3, an inner hot-extrusion polyethylene layer 4 and an outer hot-extrusion polyethylene layer 5 from inside to outside, wherein the heat-insulation rope ring is formed by arranging a circle of heat-insulation ropes around the steel wire bundle, the heat-insulation ropes and the steel wire bundle are arranged in parallel, the steel wire bundle is completely surrounded in the middle by the heat-insulation ropes on the heat-insulation rope layer and is not exposed, the heat-insulation rope layer and the steel wire bundle are shaped through the wrapping belt, the wrapping belt wound around the heat-insulation ropes forms the wrapping belt layer, and the hot-extrusion polyethylene layer is an inner layer.
The manufacturing method of the inhaul cable comprises the following steps: the steel wire and the heat insulation rope are fed together, the heat insulation rope is parallel to the steel wire, the heat insulation rope is arranged on the outer layer of the steel wire bundle, the heat insulation rope surrounds the whole steel wire bundle until the steel wire rope is not exposed, then a winding belt is used for winding and shaping to obtain a bare cable, and then one or more polyethylene layers are hot extruded on the periphery of the bare cable to obtain a cable body; the cable body blanking method comprises the steps of firstly stripping two hot extrusion polyethylene layers at two ends to expose bare cables, stripping off wrapping belts to expose heat insulation ropes, cutting the exposed heat insulation ropes to expose steel wire bundles, then anchoring the steel wire bundles into an anchorage device to obtain stay cables, carrying out tensioning inspection on the stay cables, and coiling and packaging the stay cables after the stay cables are qualified.
Example 2
A heat-insulating and fireproof hot-extruded polyethylene parallel steel wire inhaul cable comprises a cable body, from inside to outside, a parallel steel wire bundle 1, an inner wrapping tape layer 3, a heat-insulating rope layer 2 ', an outer wrapping tape layer 3', an inner hot-extruded polyethylene layer 4 and an outer hot-extruded polyethylene layer 5 in sequence, wherein the parallel steel wire bundle is wound and shaped through a wrapping tape to form the inner wrapping tape layer 3; the heat insulation rope layer is formed by spirally winding heat insulation ropes on the periphery of the steel wire bundle, the coils are closely arranged, the heat insulation rope layer is wound and shaped through wrapping belts to form an outer wrapping belt layer 3, and the hot extrusion polyethylene layer is an inner layer and an outer layer.
The manufacturing method of the inhaul cable comprises the following steps: twisting steel wires and winding a winding belt in a full-length mode, tightly winding a heat insulation rope on the outer layer, leaving no gap between coils of the heat insulation rope, winding and wrapping the belt in a full-length mode on the outer periphery of the heat insulation rope to form a bare rope, and hot extruding one or more polyethylene layers on the outer periphery of the bare rope to obtain a rope body; the method comprises the following steps of firstly stripping hot extrusion polyethylene layers at two ends of a cable body to expose a bare cable, stripping off a wrapping belt to expose a heat insulation rope, cutting the exposed heat insulation rope, removing the wrapping belt wrapping the periphery of a steel wire bundle to expose the steel wire bundle, anchoring the steel wire bundle into an anchorage device to obtain a stay cable, carrying out tensioning inspection on the stay cable, and coiling and packaging after the stay cable is qualified.
Example 3
The application also discloses a heat-insulation and fireproof hot-extrusion polyethylene parallel steel wire inhaul cable, wherein a inhaul cable body sequentially comprises a parallel steel wire bundle 1, a wrapping belt layer 3, a heat-insulation layer 6, an inner hot-extrusion polyethylene layer 4 and an outer hot-extrusion polyethylene layer 5 from inside to outside, and the parallel steel wire bundle is wound and shaped by the wrapping belt to form the inner wrapping belt layer 3; the heat insulation layer 6 is composed of a heat insulation belt wound on the periphery of the steel wire bundle, and the hot extrusion polyethylene layer is an inner layer and an outer layer.
The manufacturing method of the inhaul cable comprises the following steps: twisting the steel wire and winding a winding belt in full length, tightly winding a heat insulation belt on the outer layer to obtain a bare cable, and hot-extruding one or more polyethylene layers on the outer periphery of the bare cable to obtain a cable body; the cable body blanking firstly strips the hot extrusion polyethylene layers at two ends to expose bare cables, strips the exposed heat insulation belts, removes the wrapping belts wrapped on the peripheries of the steel wire bundles to expose the steel wire bundles, anchors the steel wire bundles into the anchorage device to obtain the stay cable, performs tensioning inspection on the stay cable, and coils and packages the stay cable after the stay cable is qualified.
This application can keep apart the steel wire bundle with the external world completely through set up thermal-insulated rope/belting between steel wire bundle and hot crowded polyethylene layer, even outer polyethylene hot crowded layer is burnt, thermal-insulated rope or thermal-insulated area also can protect the steel wire bundle.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (5)
1. The utility model provides a thermal-insulated, fire prevention type hot extrusion polyethylene parallel steel wire cable which characterized in that: the stay cable body sequentially comprises a parallel steel wire bundle, a heat insulation rope layer, a wrapping belt layer and a hot extrusion polyethylene layer from inside to outside, wherein the heat insulation rope layer is formed by arranging a circle of heat insulation ropes around the steel wire bundle, the heat insulation ropes and the steel wire bundle are arranged in parallel, the heat insulation rope layer and the steel wire bundle are formed by wrapping through a wrapping belt, the wrapping belt layer is formed by wrapping belts wound around the heat insulation ropes, and the hot extrusion polyethylene layer is one or more layers.
2. The heat-insulating and fireproof hot-extruded polyethylene parallel steel wire inhaul cable according to claim 1, wherein: the heat insulation ropes of the heat insulation rope layer completely surround the steel wire bundles in the middle and are not exposed.
3. The utility model provides a thermal-insulated, fire prevention type hot extrusion polyethylene parallel steel wire cable which characterized in that: the stay cable body sequentially comprises a parallel steel wire bundle, an inner winding and wrapping belt layer, a heat insulation rope layer, an outer winding and wrapping belt layer and a hot extrusion polyethylene layer from inside to outside, wherein the parallel steel wire bundle is wound and shaped by the winding and wrapping belt to form the inner winding and wrapping belt layer; the heat insulation rope layer is formed by spirally winding heat insulation ropes on the periphery of the steel wire bundle, the coils are tightly arranged, the heat insulation rope layer is wound and shaped through a winding belt to form an outer winding belt layer, and the hot extrusion polyethylene layer is one or more layers.
4. The utility model provides a thermal-insulated, fire prevention type hot extrusion polyethylene parallel steel wire cable which characterized in that: the stay cable body sequentially comprises a parallel steel wire bundle, a wrapping belt layer, a heat insulation layer and a hot extrusion polyethylene layer from inside to outside, wherein the parallel steel wire bundle is wound and shaped by the wrapping belt to form an inner wrapping belt layer; the heat insulation layer is composed of a heat insulation belt wound on the periphery of the steel wire bundle, and the hot extrusion polyethylene layer is one or more layers.
5. The heat-insulating and fire-proof hot-extruded polyethylene parallel steel wire inhaul cable according to claim 4, wherein: the heat insulation belt is a silica fiber heat insulation belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920387634.5U CN210238293U (en) | 2019-03-26 | 2019-03-26 | Heat-insulation fireproof hot-extrusion polyethylene parallel steel wire inhaul cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920387634.5U CN210238293U (en) | 2019-03-26 | 2019-03-26 | Heat-insulation fireproof hot-extrusion polyethylene parallel steel wire inhaul cable |
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| CN210238293U true CN210238293U (en) | 2020-04-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109914245A (en) * | 2019-03-26 | 2019-06-21 | 江苏法尔胜缆索有限公司 | A kind of heat-insulated, fire-type hot extruded polyethylene parallel wire stay |
| CN113605234A (en) * | 2021-08-31 | 2021-11-05 | 江苏中矿大正表面工程技术有限公司 | Fireproof outer layer isolation system for bridge stay cable |
-
2019
- 2019-03-26 CN CN201920387634.5U patent/CN210238293U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109914245A (en) * | 2019-03-26 | 2019-06-21 | 江苏法尔胜缆索有限公司 | A kind of heat-insulated, fire-type hot extruded polyethylene parallel wire stay |
| CN113605234A (en) * | 2021-08-31 | 2021-11-05 | 江苏中矿大正表面工程技术有限公司 | Fireproof outer layer isolation system for bridge stay cable |
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