CN1941220B - Crane cable for high-building - Google Patents
Crane cable for high-building Download PDFInfo
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- CN1941220B CN1941220B CN 200510094704 CN200510094704A CN1941220B CN 1941220 B CN1941220 B CN 1941220B CN 200510094704 CN200510094704 CN 200510094704 CN 200510094704 A CN200510094704 A CN 200510094704A CN 1941220 B CN1941220 B CN 1941220B
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Abstract
An improvement of three cores high voltage lifting cable of high-rise building is adopting single core insulating cables and between them filled by three carrying steel cores with insulating coat of arc sector section. They cross into cable and outside is pricked by high-intensity strap. The arc sector bearing touches with closed cable core with large acreage and this enhances the friction of them greatly. For the crossing and strap, it increases the friction between them and greatly enhances the whole tensile strength of cable to endure more strength and is suit for lifting 150 meters or higher construction. It also increases current capacity of cable about 10-30% and reduces the weight of cable about 20-30% to cut down the cost. The arc sector bearing gives more little side pressure to cable and the cable is safe with good reliability. The absolute structure of three cores bearing reduces the difficulty of production.
Description
Technical field
The present invention is the improvement to crane cable for high-building.
Background technology
Along with Process of Urbanization Construction, skyscraper is more and more, and many buildings all break through 200 meters height, and the skyscraper plot ratio is high simultaneously, and power consumption is very large, and through-put power is large, especially needs large capacity high cable.And main cable all adopts vertical run in the skyscraper, and therefore cable weighs 5～8 tons usually, and this just requires cable that very high tensile strength will be arranged.Existing steel wire armored cable is the inner cushion layer periphery arranging steel wire armouring behind three cable core twisted synthesizing cables, so that cable can bear longitudinal pulling force.This structural cable, the one, cable weight is large; The 2nd, periphery fixation with steel wire difficulty, difficulty of construction is large; The 3rd, can cause cable heat radiation difficulty, so ampacity reduces relatively, same cross-sectional armoured cable ampacity will reduce 30% than unarmored cable ampacity, so that cable cost improves; The 4th, the armoured cable external diameter is larger, has increased the cable material consumption, also can cause cable cost to increase.
The disclosed armoured cable of metal tensile flexible pipe as well of Chinese patent CN2528084, its structure is enclosed with layer of metal elasticity anti-stretching hose for the outer wall at single core, multicore insulated conductor or common cable; The pipe internal clearance is inserted the filling plastic material; The pipe outer wall coats one deck plastics or layer of steel wire mesh grid or one deck plastics again and adds the layer of steel wire mesh grid.This armoured cable can only play some termite-resistant rodent-resistant effects, can not hold large stretching resistance, can not be used for 150 meters or the vertical hanging of above skyscraper and lay.
The disclosed super long high strength vertical shaft of Chinese patent CN2653647 cable, its structure are to be provided with the armoured layer of lapping layer, inner armor layer, inner sheath, steel wire or B alloy wire between the insulating barrier of cable and oversheath.This structural cable still can not bear great stretching resistance, can only be used for some vertical heights and only have tens meters vertical shaft, can not be used for 150 meters or above skyscraper hanging laying cable equally.
The disclosed steel wire armored power cable of Chinese patent CN2555552, its structure becomes outside the cable core for thoroughly doing away with edge three, is disposed with belting layer and external sheath layer, becomes in the space between cable core and the belting layer to be filled with the stranded steel wire that extrudes plastic layer.The rounded structure of the used insulating twisted steel wire of this structural cable, all little with cable core Contact area and frictional force, and the oversheath enclasping force is little, whole cable is poor, and tensile strength can not satisfy equally 150 meters or the vertical hanging of above skyscraper and lay requirement; Secondly, circular steel core is large to the lateral pressure of cable core, can be stable to cable, reliability brings adverse effect; Besides, oversheath extrudes, and the cable poor radiation can cause current-carrying capacity of cable to reduce.
Therefore, existing employing steel wire is wrapped, or extruded insulation steel wire circular configuration parallel longitudinal lays, vertical tension is little, therefore all can not bear up to 4 tons or with upper pulling force, all can not be used for 150 meters or the vertical hanging of above skyscraper and lay, and the cable poor radiation, cause ampacity to reduce, increased cable cost.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned prior art, provide a kind of not only tensile strength high, can be used for 150 meters or above skyscraper hanging and lay, and make simple, cost is low, the crane cable for high-building little to the cable core lateral pressure, that ampacity is large.
The realization of the object of the invention, the main improvement is in three that the are delta arrangement alternate spaces of single core insulation cable, is the cambered-surface fan-shaped filling with three by carrying steel core outsourcing insulation cross section, and with itself and single core insulation cable twisting stranding, periphery is tightened with the binding of high strength band, makes it to become an integral body.Specifically, the utility model crane cable for high-building, comprise three insulation cable cores that are delta arrangement, it is characterized in that said insulation cable core is single core insulation cable, being cambered-surface fan-shaped with three by carrying steel core outsourcing insulation cross section between single core insulation cable fills, both twisted synthesizing cables, periphery is tightened by the binding of high strength band.
The carrying steel core of the said extruded insulation of the present invention, a kind of better is that steel core adopts stranded steel wire rope, so both can improve steel wire carrying pulling force, can relatively improve again the flexibility behind the stranding.Said periphery high strength band, a kind of extruded insulation steel wire that preferably adopts.
The said single core insulation cable of the present invention can be the cable core that conductor, insulation form, the cable that also can be comprised of conductor, insulation, sheath.The present invention to adopt the latter, can not be damaged especially in fine protection insulation.
As required, if be used for medium and high voltage cable, outside its single core insulation cable conductor and the insulation conductor screen and insulation shielding are arranged respectively, insulation shielding also has metallic shield outward.
The present invention is owing to adopt three cross sections to be outsourcing insulation carrying steel core and three single core insulation cable twisting strandings of cambered-surface fan-shaped, and periphery is tightened with band, and both are combined closely becomes one and stablize overall structure, has greatly put forward whole cable tensile strength; Especially the cross section is the cambered-surface fan-shaped supporting body and cable core adjacent contact area is large, greatly increased frictional force between the two, auxiliary twisted synthesizing cable, binding are tightened and have been increased especially between the two frictional force and globality, thereby can bear great whole tensile strength, make it to adapt to 150 meters or more the skyscraper hanging lay.In addition, this structure cable core and carrying good integrity also are conducive to suspended cable and lay, and only the top wirerope need be hung to get final product, and greatly reduce hanging and construction cost.Directly adopt three single-core cables to make cable core, and the alternate insulation carrying wirerope that lays, not only current-carrying capacity of cable is high, can improve about ampacity 10-30% than same specification steel wire periphery armoured cable; And cable weight can alleviate 20～30%, greatly reduces cable cost.The cambered-surface fan-shaped supporting body is little to cable side pressure, cable security, good reliability.Three distinguish the carrying absolute construction, can make separately, and amalgamation is stranded, make simply, have reduced the explained hereafter difficulty.This structure also is conducive to profile rounding behind the twisted synthesizing cable, is conducive to Stability Analysis of Structures.
Below in conjunction with an optimization execution mode, further specify the present invention, but concrete structure of the present invention not the concrete restriction to invention.
Description of drawings
Fig. 1 is embodiment of the invention cross section structure schematic diagram.
Fig. 2 is the invention process perspective view.
Fig. 3 is that cable core of the present invention is subjected to the lateral pressure schematic diagram.
Embodiment
Embodiment 1: referring to accompanying drawing, crane cable for high-building of the present invention, three single core insulation cables 1 that are triangularly arranged are arranged, prolong the cable longitudinal arrangement between cable and have three by extruding the insulation carrying steel cable that the cross section is cambered-surface fan-shaped insulation 3 outside the load-bearing wires rope 2, behind the common twisted synthesizing cable, band 4 bindings of external application steel wire rope insulation are tightened.
In addition, can also be respectively arranged with conductor screen and insulation shielding outside the conductor of single core insulation cable and insulation, insulation shielding also is provided with metallic shield outward.
Claims (6)
1. crane cable for high-building, comprise three insulation cable cores that are delta arrangement, it is characterized in that said insulation cable core is single core insulation cable, being cambered-surface fan-shaped with three by carrying steel core outsourcing insulation cross section between single core insulation cable fills, both twisted synthesizing cables, periphery is tightened by the binding of high strength band.
2. described crane cable for high-building according to claim 1 is characterized in that said carrying steel core is stranded steel wire rope.
3. described crane cable for high-building according to claim 1 is characterized in that said band is the extruded insulation steel wire rope.
4. according to claim 1,2 or 3 described crane cable for high-building, it is characterized in that said single core insulation cable, formed by conductor, insulation, sheath.
5. described crane cable for high-building according to claim 4 is characterized in that the conductor of said single core insulation cable and insulation is outer that conductor screen and insulation shielding are arranged respectively, and insulation shielding has metallic shield outward.
6. according to claim 1,2 or 3 described crane cable for high-building, it is characterized in that the conductor of said single core insulation cable and insulation is outer that conductor screen and insulation shielding are arranged respectively, insulation shielding has metallic shield outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510094704 CN1941220B (en) | 2005-09-30 | 2005-09-30 | Crane cable for high-building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510094704 CN1941220B (en) | 2005-09-30 | 2005-09-30 | Crane cable for high-building |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1941220A CN1941220A (en) | 2007-04-04 |
| CN1941220B true CN1941220B (en) | 2013-04-10 |
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ID=37959269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510094704 Active CN1941220B (en) | 2005-09-30 | 2005-09-30 | Crane cable for high-building |
Country Status (1)
| Country | Link |
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| CN (1) | CN1941220B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543289A (en) * | 2012-03-08 | 2012-07-04 | 无锡市富华电缆有限公司 | Free-hanging wind power cable |
| CN102723134A (en) * | 2012-07-02 | 2012-10-10 | 江苏鸿翔电缆有限公司 | Suspended type mounting cable for high-rise building |
| CN103065707A (en) * | 2013-01-24 | 2013-04-24 | 江苏天地龙电缆有限公司 | Soft fireproof main power cable for high rise |
| CN103617837B (en) * | 2013-11-28 | 2015-03-04 | 湖北龙腾红旗电缆(集团)有限公司 | Medium-voltage lifting power cable for high-rise and super-high-rise mansions |
| CN107134305A (en) * | 2017-07-08 | 2017-09-05 | 安徽德源电缆集团有限公司 | A kind of ethylene propylene rubber insulated type electric wire |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2817004Y (en) * | 2005-03-24 | 2006-09-13 | 远东电缆厂 | Suspension cable for high buiding |
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2005
- 2005-09-30 CN CN 200510094704 patent/CN1941220B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2817004Y (en) * | 2005-03-24 | 2006-09-13 | 远东电缆厂 | Suspension cable for high buiding |
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| CN1941220A (en) | 2007-04-04 |
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