阅读说明：本技术 一种耐久型桥平行钢丝密闭拉索 (Durable closed stay cable for parallel steel wires of bridge ) 是由 阮莉 于 2019-09-02 设计创作，主要内容包括：本发明涉及桥梁建筑装备技术领域,且公开了一种耐久型桥平行钢丝密闭拉索,包括拉索绳芯,拉索绳芯的外表面套装有钢丝股绳,钢丝股绳的外壁设有油脂层,油脂层的外部套装有第一钢丝结构层,第一钢丝结构层的外部套装有第二钢丝结构层,且第二钢丝结构层的内壁卡接有第三钢丝结构层。该耐久型桥平行钢丝密闭拉索,通过第一钢丝结构层、第二钢丝结构层和第三钢丝结构层的设置,利用金属材质的弹性变形,使得第一钢丝结构层与第二钢丝结构层和第二钢丝结构层与第三钢丝结构层之间,在外力的作用下紧密的捻制在一起,也不会发生盐性水汽进入到其内部造成腐蚀,有效的提高了该平行钢丝密闭拉索的防腐性能,延长了其使用寿命。(The invention relates to the technical field of bridge building equipment, and discloses a durable bridge parallel steel wire airtight stay cable which comprises a stay cable core, wherein a steel wire strand is sleeved on the outer surface of the stay cable core, a grease layer is arranged on the outer wall of the steel wire strand, a first steel wire structure layer is sleeved outside the grease layer, a second steel wire structure layer is sleeved outside the first steel wire structure layer, and a third steel wire structure layer is clamped on the inner wall of the second steel wire structure layer. This airtight cable of parallel steel wire of durable type bridge, through first steel wire structural layer, the setting of second steel wire structural layer and third steel wire structural layer, utilize metal material's elastic deformation, make between first steel wire structural layer and second steel wire structural layer and the third steel wire structural layer, inseparable system of twisting with fingers is in the same place under the effect of external force, salt nature steam can not take place yet and enter into its inside and cause the corruption, the effectual corrosion resistance who improves this airtight cable of parallel steel wire, the service life of the cable is prolonged.)

1. The utility model provides an airtight cable of parallel steel wire of durable type bridge, includes cable rope core (1), its characterized in that: the outer surface cover of cable rope core (1) is equipped with steel wire strand rope (2), the outer wall of steel wire strand rope (2) is equipped with grease layer (3), the outside cover of grease layer (3) is equipped with first steel wire structural layer (4), the outside cover of first steel wire structural layer (4) is equipped with second steel wire structural layer (5), and the inner wall joint of second steel wire structural layer (5) has third steel wire structural layer (6).

2. A durable bridge parallel wire closed guy cable according to claim 1, characterized in that: the first steel wire structure layer (4) is formed by spirally twisting a single-strand boss-shaped steel wire rope combination on the outer surface of the inhaul cable core (1).

3. A durable bridge parallel wire closed guy cable according to claim 1, characterized in that: the top of the second steel wire structure layer (5) is designed to be a trapezoid structure with a large top and a small bottom, and the bottom of the second steel wire structure layer is spirally twisted in a gap between each group of first steel wire structure layers (4).

4. A durable bridge parallel wire closed guy cable according to claim 1, characterized in that: the bottom of the third steel wire structure layer (6) is provided with a trapezoidal structure with a small upper part and a large lower part, and the bottom of the third steel wire structure layer is spirally twisted in a gap between each group of second steel wire structure layers (5).

Technical Field

The invention relates to the technical field of bridge building equipment, in particular to a durable bridge parallel steel wire closed inhaul cable.

Background

The enclosed stay cable with parallel steel wires for bridge is one important part to support bridge workpiece, and has inside steel wire rope comprising several twisted steel wires and outer steel wire layer with smooth surface and high wear resistance.

But in current airtight steel wire cable of bridge, because its application range is mainly in the seaside, can receive the erosion of salt nature steam in the sea water, airtight steel wire cable is at the in-process of using moreover, under the effect of its dead weight and bearing, deformation of different degrees can take place, thereby lead to its outer deformed steel wire to take place deformation, and then make the clearance between the deformed steel wire enlarge, compactness between its steel wire is relatively poor, cause the inside that salt nature steam can permeate airtight cable to cause the corruption, serious influence this airtight cable's life.

Disclosure of Invention

Technical problem to be solved

The invention provides a durable closed bridge steel wire inhaul cable which has the advantages of compact structure, good tightness, good corrosion resistance, long service life and high safety, and solves the problems that in the existing closed bridge steel wire inhaul cable, the application range is mainly at the sea side, the closed bridge steel wire inhaul cable can be corroded by saline water vapor in seawater, and the closed bridge steel wire inhaul cable can deform in different degrees under the actions of self weight and bearing during the application process, so that the deformed steel wires on the outer layer deform, gaps among the deformed steel wires expand, the tightness among the steel wires is poor, the saline water vapor can permeate into the closed bridge inhaul cable to cause corrosion, and the service life of the closed bridge inhaul cable is seriously influenced.

(II) technical scheme

The invention provides the following technical scheme: the utility model provides a parallel airtight cable of steel wire of durable type bridge, includes the cable rope core, the surface cover of cable rope core is equipped with the steel wire thigh rope, the outer wall of steel wire thigh rope is equipped with the grease layer, the outside cover on grease layer is equipped with first steel wire structural layer, the outside cover on first steel wire structural layer is equipped with second steel wire structural layer, and the inner wall joint on second steel wire structural layer has third steel wire structural layer.

Preferably, the first steel wire structure layer is formed by spirally twisting a single-strand boss-shaped steel wire rope combination on the outer surface of the inhaul cable core.

Preferably, the top of the second steel wire structure layer is set to be a trapezoid structure with a large top and a small bottom, and the bottom of the second steel wire structure layer is spirally twisted in the gap between each group of first steel wire structure layers.

Preferably, the bottom of the third steel wire structure layer is provided with a trapezoidal structure with a small top and a large bottom, and the bottom of the third steel wire structure layer is spirally twisted in a gap between each group of second steel wire structure layers.

(III) advantageous effects

The invention has the following beneficial effects:

1. this airtight cable of parallel steel wire of durable type bridge, through first steel wire structural layer, the setting of second steel wire structural layer and third steel wire structural layer, utilize metal material's elastic deformation, make between first steel wire structural layer and second steel wire structural layer and the third steel wire structural layer, inseparable system of twisting with fingers under the effect of external force is in the same place, compare with current airtight cable, the special-shaped steel wire layer structure on its outer layer is inseparabler, even this cable takes place deformation at the in-process that uses, first steel wire structural layer, inseparable laminating between second steel wire structural layer and the third steel wire structural layer can not change yet and produce the clearance, make salt nature steam enter into its inside and cause the corruption, the effectual corrosion resisting property who improves this airtight cable of parallel steel wire, the service life of the cable is prolonged.

2. This airtight cable of parallel steel wire of durable type bridge, through the setting on grease layer, the save time that can effectual extension lubricating grease sets up a set of protective layer again at the outer of steel wire strand rope simultaneously for the entering of isolated air prevents that oxygen wherein from causing the oxidation corrosion to steel wire strand rope, further improvement the corrosion resisting property of this airtight cable of parallel steel wire.

Drawings

Fig. 1 is a schematic view of a steel wire strand according to the invention;

FIG. 2 is a schematic view of a first steel wire structure layer according to the present invention;

FIG. 3 is a schematic view of a second steel wire structure layer according to the present invention;

FIG. 4 is a schematic structural view of the present invention;

fig. 5 is a side view of the structure of the present invention.

In the figure: 1. a guy cable core; 2. a steel wire strand; 3. a grease layer; 4. a first steel wire structure layer; 5. a second steel wire structure layer; 6. and a third steel wire structure layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a durable closed cable with parallel steel wires for a bridge includes a cable core 1, a steel wire strand 2 is sleeved on an outer surface of the cable core 1, a grease layer 3 is disposed on an outer wall of the steel wire strand 2, a first steel wire structure layer 4 is sleeved on an outer portion of the grease layer 3, a second steel wire structure layer 5 is sleeved on an outer portion of the first steel wire structure layer 4, and a third steel wire structure layer 6 is fastened to an inner wall of the second steel wire structure layer 5.

In the technical scheme, the first steel wire structure layer 4 is formed by spirally twisting a single-strand boss-shaped steel wire rope combination on the outer surface of the inhaul cable core 1.

Wherein, to the mode of spiral system of twisting with fingers, the effectual area of contact that has increased between every group first steel wire structural layer 4 has improved the interact power between every group first steel wire structural layer 4 to the mechanical properties of this cable has been improved.

In this technical scheme, the top of second steel wire structural layer 5 is established to big end down's trapezium structure, and its bottom spiral twists in the clearance between every group first steel wire structural layer 4.

Wherein, to the system position of twisting of second steel wire structural layer 5, make it can effectual packing the clearance between every first steel wire structural layer 4 of group, with second steel wire structural layer 5's cooperation cause it and first steel wire structural layer 4 between the joint inseparabler, the effectual fatigue strength that improves the cable.

In the technical scheme, a trapezoid structure with a small upper part and a large lower part is arranged at the bottom of the third steel wire structure layer 6, and the bottom of the third steel wire structure layer is spirally twisted in a gap between each group of second steel wire structure layers 5.

Wherein, setting to 5 trapezium structures of first steel wire structural layer 4 and second steel wire structural layer, make first steel wire structural layer 4 and second steel wire structural layer 5 at the in-process of twisting with the fingers, under the effect of external pressure, in the clearance between every first steel wire structural layer 4 of group is suppressed to 5 spirals of second steel wire structural layer, elastic deformation through 6 rigid metal material of second steel wire structural layer 5 and third steel wire structural layer, can make its inseparable laminating together, the clearance between them is less, the leakproofness is better, the effectual corrosion resisting property and the fatigue strength that have improved this cable.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.