CN204530292U - Bridge is with filling integral type anticorrosion parallel wire stay cable body - Google Patents

Bridge is with filling integral type anticorrosion parallel wire stay cable body Download PDF

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Publication number
CN204530292U
CN204530292U CN201520214022.8U CN201520214022U CN204530292U CN 204530292 U CN204530292 U CN 204530292U CN 201520214022 U CN201520214022 U CN 201520214022U CN 204530292 U CN204530292 U CN 204530292U
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China
Prior art keywords
sheath
density polyethylene
bridge
steel
integral type
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CN201520214022.8U
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Chinese (zh)
Inventor
王鹏
王福敏
刘孝辉
汪宏
易辉
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China Merchants Chongqing Communications Research and Design Institute Co Ltd
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China Merchants Chongqing Communications Research and Design Institute Co Ltd
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Abstract

The utility model discloses a kind of bridge and fill integral type anticorrosion parallel wire stay cable body, comprise the steel tendon in sheath and sheath, be filled with the solid-state low density polyethylene (LDPE) anticorrosive coat surrounded by steel tendon in described sheath, the steel wire of described anticorrosive coat and steel tendon is bonded as one.Compared to existing technology, even if this cable body is when sheath is impaired, steel tendon still can keep air-tightness and watertightness, and meanwhile, steel wire corrosion can not occur.

Description

Bridge is with filling integral type anticorrosion parallel wire stay cable body
Technical field
The utility model relates to a kind of bridge and fills integral type anticorrosion parallel wire stay cable body.
Background technology
Drag-line is the superstructure of cable-stayed bridge, is the topmost stressed member of cable-stayed bridge, carries the gravity of bridge floor, and the security relationship of drag-line, to the safe operation of bridge, is related to the safety of pedestrian and driving on bridge.Existing lasso protection technology and stayed structure be high density polyethylene (HDPE) is protected directly be coated on bunchy the naked rope of parallel high tensile steel wire on as protective jacket; high density polyethylene (HDPE) has excellent wear-resisting, corrosion resistance in a short time; but its tolerance, resistance to ag(e)ing are poor; the aging anti-corrosion protection effect that will directly affect steel wire of HDPE; meanwhile, the air-tightness between drag-line inner wire and watertightness cannot be ensured.
Notification number is that the utility model patent of CN 101608430 B discloses a kind of manufacturing process for anti-corrosion type composite inhaul cable, mainly comprises the steps: 1) zinc-coated wire blanking, steel wire strand system, and corrosion preventive compound is filled in steel wire gap, then wrapped; 2) extrusion molding double-layer polyethylene sheath; 3) cut off according to cutting length, anchor processed is carried out at two ends; 4) drag-line ultra stretching is carried out; 5) pack, mark, transport.It discloses a kind of drag-line manufacturing technique, play creationary technical characteristic and be that described corrosion preventive compound is specially anticorrosion grease.By filling anticorrosion grease between steel wire, overcoming between drag-line steel wire and polyethylene sheath and there is space technical problem, effectively avoid the inner wire of drag-line to corrode, improve drag-line service life.Its shortcoming existed is that the anticorrosion grease between steel wire and steel wire are not integrative-structures, and when after outer hdpe layer protective jacket damage, inner anticorrosion grease can overflow between steel wire, and cannot continue to carry out anticorrosion to steel wire, its antiseptic effect is undesirable.
Authorization Notice No. is that the utility model patent of CN 201678945 U discloses kind of a Novel bracing cable, comprise inner steel wire, and the anticorrosive coat of Steel Wire Surface, it is characterized in that: described anticorrosive coat is zinc-iron alloy zinc coat, be filled with anticorrosion grease between the gap of steel wire, drag-line periphery is also provided with high density polyethylene (HDPE) clad.It discloses a kind of stayed structure, advantage is the same with above-mentioned utility model patent, is namely provided with between steel wire and fills anticorrosion grease.Although anticorrosion grease one deck zinc-iron alloy zinc coat much more outward, still exist when high density polyethylene (HDPE) clad and zinc-iron alloy zinc coat impaired after, anticorrosion grease leaks and cannot protect the shortcoming of steel wire.
Utility model content
In view of this, the technical problems to be solved in the utility model is to provide a kind of bridge to fill integral type anticorrosion parallel wire stay cable body, and this cable body still can prevent inner wire from corroding after sheath damage.
Meanwhile, another technical problem that will solve of the utility model is to provide a kind of manufacturing technique of above-mentioned drag-line cable body.
With regard to drag-line cable body, comprise the steel tendon in sheath and sheath, be filled with the solid-state low density polyethylene (LDPE) anticorrosive coat surrounded by steel tendon in described sheath, the steel wire of described anticorrosive coat and steel tendon is bonded as one.
Further, described steel tendon is twisting shape, and its twist angle is 2-3 °.
Further, described jacket outer surface is wound with high density polyethylene (HDPE) double-spiral coil.
Further, described sheath comprises high density polyethylene (HDPE) inner sleeve and high density polyethylene (HDPE) overcoat.
Further, the cross section of described steel tendon is regular hexagon or unfilled corner hexagon.
With regard to the manufacturing technique of drag-line cable body, this technique comprises the steps:
S1) put silk, sub-wire: long according to finished product rope, after considering correction, determine the thick cutting length of high tensile steel wire, and steel wire is placed on fiber-arranging device;
S2) bonding low density polyethylene (LDPE) anticorrosive coat: kept by steel wire certain gap parallel through heating tank, immerse low density polyethylene (LDPE) hot solution, after steel wire is coated to low density polyethylene (LDPE), through mould, steel wire is tightened up bunchy, it is solid-state that spraying or water spray make low-density polyethylene material hot solution be cooled to, low-density polyethylene material after solid-state is bonding with the steel wire of steel tendon integral, forms the cable core of cable body;
S3) the plastic sheath of double-deck hot extrude: at inner sleeve and the overcoat of the outer plastic high-density polyethylene material of cable core, form cable body.
Further, described step S2) in steel wire tighten up in the process of bunchy, collect while left-handed slight twisting, twist angle 2 ~ 3 °.
Further, also step S4 is comprised) jacket surface is wound around the high density polyethylene (HDPE) double-spiral coil of anti-wind, rain and vibration.
The beneficial effects of the utility model: integral type anticorrosion parallel wire stay cable body filled by bridge of the present utility model, comprise the steel tendon in sheath and sheath, be filled with the solid-state low density polyethylene (LDPE) anticorrosive coat surrounded by steel tendon in described sheath, the steel wire of described anticorrosive coat and steel tendon is bonded as one.Compared to existing technology, even if this cable body is when sheath is impaired, steel tendon still can keep air-tightness and watertightness, and meanwhile, steel wire corrosion can not occur.Meanwhile, the utility model additionally provides the manufacture craft of the cable body of this structure, and this technological process is simple, production efficiency is high.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described.
Fig. 1 is the cross sectional representation of the utility model drag-line cable body.
Fig. 2 is the schematic flow sheet (omitting step S3 and S4) of the utility model cable body manufacturing technique;
Fig. 3 is A-A sectional view in Fig. 2;
Fig. 4 is B-B sectional view in Fig. 2.
Detailed description of the invention
As shown in Figure 1: drag-line cable body of the present utility model, comprise the steel tendon 2 in sheath 1 and sheath, the solid-state low density polyethylene (LDPE) anticorrosive coat 3 surrounded by steel tendon is filled with in described sheath 1, the steel wire of described anticorrosive coat and steel tendon is bonded as one, and is filled with the low-density polyethylene material of anticorrosive coat between steel wire.Its advantage is: 1) steel wire of steel tendon and the low-density polyethylene material of anticorrosive coat are integral type structure, can, stretcher strain tortuous with steel tendon, ensures air-tightness and the watertightness of parallel wire stay cable body inside; 2) this anticorrosive coat can adequately protect steel wire, even if outer protective sleeve damage, internal steel tow due to by anticorrosive coat surrounding, still can not there is corrosion.
As the further improvement of technique scheme, described steel tendon 2 is in twisting shape, and its twist angle is 2-3 °, so-called twisting refers to be fixed one end of steel tendon, and the other end rotates around its axis, and steel tendon is reversed around axis, popular says, this similar is in stubborn fried dough twist.The intensity of steel tendon entirety can be improved by twisting.
As the further improvement of technique scheme, described sheath 1 outer surface is wound with high density polyethylene (HDPE) double-spiral coil 4.This spiral winding can improve the dynamic ability of cable body anti-wind, rain and vibration.
As the further improvement of technique scheme, described sheath 1 comprises high density polyethylene (HDPE) inner sleeve 11 and high density polyethylene (HDPE) overcoat 12.
As the further improvement of technique scheme, the cross section of described steel tendon 2 is regular hexagon or unfilled corner hexagon.The structure of steel tendon is compacter, and tension torsional strength is high.
As shown in Figure 2, the manufacturing technique of integral type anticorrosion parallel wire stay cable body filled by bridge of the present utility model, comprises the steps:
S1) put silk, sub-wire: long according to finished product rope, after considering correction, determine the thick cutting length of high tensile steel wire, and steel wire is placed on fiber-arranging device 5;
S2) bonding low density polyethylene (LDPE) anticorrosive coat: kept by steel wire certain gap parallel through heating tank 6, immerse low density polyethylene (LDPE) hot solution 7, after steel wire is coated to low density polyethylene (LDPE), through mould 8, steel wire is tightened up bunchy, it is solid-state that spraying or water spray make low-density polyethylene material hot solution be cooled to, low-density polyethylene material after solid-state is bonding with the steel wire of steel tendon integral, forms the cable core 9 of cable body;
S3) the plastic sheath of double-deck hot extrude: at inner sleeve 11 and the overcoat 12 of the outer plastic high-density polyethylene material of cable core, form cable body.
This technique, by mould, the steel wire of coating low density polyethylene (LDPE) solution is tightened up bunchy, and make low density polyethylene (LDPE) solution be cooled to fixing after steel tendon wrapped up and fill between adjacent wires, form solid-state low density polyethylene (LDPE) all-in-one-piece cable core bonding with steel tendon, this technological process is simple, and shaping efficiency is high.
As the further improvement of technique scheme, described step S2) in steel wire tighten up in the process of bunchy, collect while left-handed slight twisting, twist angle 2 ~ 3 °.
As the further improvement of technique scheme, also comprising step S4) jacket surface is wound around the high density polyethylene (HDPE) double-spiral coil of anti-wind, rain and vibration.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.

Claims (5)

1. a bridge is with filling integral type anticorrosion parallel wire stay cable body, comprise the steel tendon (2) in sheath (1) and sheath, it is characterized in that: be filled with the solid-state low density polyethylene (LDPE) anticorrosive coat (3) of being surrounded by steel tendon in described sheath (1), the steel wire of described anticorrosive coat and steel tendon is bonded as one.
2. integral type anticorrosion parallel wire stay cable body filled by bridge according to claim 1, it is characterized in that: described steel tendon (2) is in twisting shape, and its twist angle is 2-3 °.
3. integral type anticorrosion parallel wire stay cable body filled by bridge according to claim 2, it is characterized in that: described sheath (1) outer surface is wound with high density polyethylene (HDPE) double-spiral coil (4).
4. integral type anticorrosion parallel wire stay cable body filled by bridge according to claim 3, it is characterized in that: described sheath (1) comprises high density polyethylene (HDPE) inner sleeve (11) and high density polyethylene (HDPE) overcoat (12).
5. integral type anticorrosion parallel wire stay cable body filled by bridge according to claim 4, it is characterized in that: the cross section of described steel tendon (2) is regular hexagon or unfilled corner hexagon.
CN201520214022.8U 2015-04-10 2015-04-10 Bridge is with filling integral type anticorrosion parallel wire stay cable body Active CN204530292U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104762840A (en) * 2015-04-10 2015-07-08 招商局重庆交通科研设计院有限公司 Filling integrated type anti-corrosion parallel wire stayed cable body for bridge and manufacturing process for filling integrated type anti-corrosion parallel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104762840A (en) * 2015-04-10 2015-07-08 招商局重庆交通科研设计院有限公司 Filling integrated type anti-corrosion parallel wire stayed cable body for bridge and manufacturing process for filling integrated type anti-corrosion parallel

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