KR101166567B1 - Strand compactor having rotation bar, and method for forming strand using the same - Google Patents

Abstract

When shaping a plurality of wires constituting the main cable of a suspension bridge into strands with a circular bundle, it is possible to shape a plurality of wires in a circle and easily perform a fastening operation without any equipment such as a hydraulic jack. Provided are a strand compactor having a rotating bar and a method of forming a strand using the same, which can round the surface well.

Description

Strand compactor with rotating bar and strand formation method using same {STRAND COMPACTOR HAVING ROTATION BAR, AND METHOD FOR FORMING STRAND USING THE SAME}

The present invention relates to a strand compactor for suspension bridge, and more particularly, a rotation bar for shaping a plurality of wires constituting a main cable of a suspension bridge into strands that are circular bundles. The present invention relates to a strand compactor having a) and a strand forming method using the same. The bridge to which the strand compactor with such a rotating bar is applied may be a suspension bridge, but is not limited thereto.

In general, a bridge is an expensive structure made to pass on a river or road. Such bridges can be broadly classified into bridge superstructures and bridge substructures according to their structural positions and functions.

The bridge upper structure includes a slab forming a bottom plate of a passageway, and a main member that directly supports a load applied to the slab by traffic such as a vehicle and a person. In addition, the bridge substructure consists of shifts, piers, foundation slabs and the like to support the bridge superstructure and to transfer loads transmitted from the bridge superstructure to the foundation ground.

Bridges composed of the above-described structure is determined according to the shape of the main member, the main member is classified into Girder bridge, Arch bridge and Truss bridge according to the type, in particular, The case where the main member is supported by the cable is called a cable bridge.

These cable bridges can be classified into arch bridges, cable-stayed girder bridges or suspension bridges, and the reinforcing cables used in these cable bridges serve to reinforce the bridge upper structure.

In addition, unlike the reinforcing cable that structurally supports the bridge upper structure in this way, there is also a scenic cable that is installed on the bridge for the purpose of landscape, in particular, a bridge, such as a sidewalk bridge or driveway bridge is installed in downtown.

As a method of connecting such a reinforcing cable or landscape cable to a bridge, a method of simply connecting one side and the other side of a bridge or other structure with a cable, and connecting one side and the other side of the bridge or other structure with a cable, and then turnbuckle. Alternatively, a method of controlling the tensile force by using a hydraulic-pressure jack is used.

On the other hand, the main cable of the suspension bridge is air spinning (AS) method and PPWS (Prefabricated Parallel Wire System) method.

The air spinning method is a method of constructing one or several strands of steel wires and concentrating the finally laid wires to form one main cable. In addition, the PPWS method is a method of constructing a main cable by constructing and stranding strands made of a plurality of strands and pre-fabricated strands one by one. Typically, such an air spinning method and a PPWS method will construct a cable after completing the suspension tower of the suspension bridge.

Meanwhile, as the prior art, Korean Patent No. 10-487142 discloses an invention entitled “A device and method for connecting a load transfer element to a cable and a suspension bridge including the device”, FIGS. 1 to FIG. It demonstrates with reference to 3.

1 is a diagram illustrating a typical suspension bridge, FIG. 2 is a diagram illustrating a cohesive strand according to the prior art, and FIG. 3 is a diagram illustrating the application of initial stress to the steel wire with a hydraulic system according to the prior art. to be.

Referring to FIG. 1, a typical suspension bridge is provided to the support cable 13 by a deck 11, two towers 12, two parallel support cables 13, and each collar 20. Hanger 14 is connected to support the deck 11 and to transfer the load of the deck 11 to the support cable 13.

The hanger 14 carrying the load of the deck 11 is connected to a support cable 13 of a bridge formed of at least one bundle of strands 16, as shown in FIG. 2. This connection is carried out by a collar 20 formed of several shells pressed around the cable 13 using fastening means such as bolts, each hanger 14 having such a collar ( 20) is fixed to any one of the shells.

The support cable 13 is tensioned between two ground fixings 15 at both ends of the bridge and supported by the tower 12. At this time, each support cable 13 can be manufactured by assembling individual protective strands 16 of the type shown in FIG.

Each of these strands 16 may be made of several twisted steel wires 17 which are optionally galvanized, for example, as shown in a) of FIG. It is embedded in an elastomer 18 such as butadiene and the like. The elastomer 18 is attached to the twisted wire 17 forming the strand 16 in accordance with the surface bonding method or corresponding to the shape of the strand 16. The elastomer 18 can also be attached to an individual high density polyethylene (HDPE) sheath 19. In this case, each sheath 19 may be integrally formed with the steel wire 17 of the strand 16.

In addition, b) of FIG. 2 shows the structure of the support cable 13 made of 37 bundles of the strands 16. At this time, the strands 16 may be arranged in the form of a hexagonal grid, the triangular gap having a curved side (side) is formed between the strands (16).

In the collar 20 position, the strands 16 are embedded in a tubular sheath 22 formed by joining two semi-cylindrical shells made of plastic material such as high density polyethylene (HDPE). At this time, an elastomer 23 is disposed between the hexagonal bundle of strands and the inner surface of the outer shell 22 to maintain the strands 16 inside the outer shell 22, and the compressive force applied by the connecting collar 20 is a strand. Is passed to (16).

For example, an insert 24 made of a plastic material, such as high density polyethylene (HDPE), is placed in a triangular gap with a curved side that is formed between the individual sheaths 19 of the strand 16 so that the collar 20 The gap is filled at the position of. Thus, in the collar 20 position, the bundles of strands 16 are received in a matrix formed of tubular sheath 22, elastomer 23 and insert 24.

3 shows a method of applying a prestress to the crimping rod 27, wherein when the shell 20a is installed on the support cable 13, the brace tube 28, the upper nut and the lower nut 31 are defined. In this case, the upper nut and the lower nut 31 are not fastened.

In addition, the plate 38 having the orifice 39 in the upper end position of the rod 27 is mounted on the assembly, so that the ends 30 of the rod 27 protrude through the orifice 39. Then, the temporary nut 40 is fastened to the end 30 of each rod 27 protruding above the plate 38. In addition, a hydraulic system 41, which may include one or more hydraulic jacks, is mounted between the top surface of the shell 20a and the bottom surface of the plate 38.

By applying a nominal force (F) to power the hydraulic system 41 to extend the rod 27, a force is applied from the plate 38 to the nut 40, which is caused by the nut 40. The end 30 of the rod 27 is raised. When such nominal force F is applied or if the deformation of the rod 27 required is obtained, the upper nut 31 comes into contact with the upper end of the brace tube 28 so that the rod at the position where the stress is applied ( 27) is compressed. Thereafter, the hydraulic system 41 is stopped and the temporary nut 40 and the plate 38 are separated, and then the hydraulic system 41 is removed.

On the other hand, Figure 4 is a photograph illustrating the use of a hydraulic strand compactor according to the prior art, for example, a construction photograph of the Yeongjong Bridge using a hydraulic strand compactor.

The hydraulic strand compactor 60 according to the prior art is used to shape a plurality of steel wires 50 into strands that are circular bundles, and in this case, the plurality of steel wires 50 are circular by using the hydraulic jack 70. It shows shaping in bundles.

However, in the case of the hydraulic strand compactor according to the prior art, there is a problem that a separate equipment such as a hydraulic jack 70 is required, and accordingly a separate working personnel for operating the hydraulic jack 70 is required.

1) Republic of Korea Patent No. 10-487142 (filed February 18, 2000), the name of the invention: "apparatus and method for connecting the load transfer element to the cable and suspension bridge comprising the device" 2) Republic of Korea Utility Model Number No. 2000-2342 (published: February 7, 2000), Designated Name: "Wire Vise" 3) Republic of Korea Utility Model Registration No. 20-446167 (Application date: February 13, 2009), Designation name: "Cable tension control device" 4) Republic of Korea Patent No. 10-1072498 (Application Date: December 18, 2008), the title of the invention: "Suspension bridge cable installation apparatus and construction method using the same" 5) Republic of Korea Patent Publication No. 2010-74814 (published: July 2, 2010), the title of the invention: "Multi Spinning Wheel Cable Temporary Apparatus and Cable Tempering Method Using The Same"

Technical problem to be solved by the present invention for solving the above-mentioned problems, when a plurality of wires (wire) constituting the main cable of the suspension bridge to form a strand of a circular bundle, a plurality of wires without a separate equipment such as a hydraulic jack It is to provide a strand compactor having a rotary bar and a strand forming method using the same, which can be standardized and easy to tighten the work.

Another technical problem to be solved by the present invention is a strand having a rotating bar, which can be circularly shaped on the entire surface of the element wire well and can be easily transported by lightening the strand compactor, as compared with a conventional hydraulic strand compactor. It is to provide a compactor and a strand forming method using the same.

As a means for achieving the above-described technical problem, the strand compactor having a rotary bar according to the present invention, a strand comb to form a plurality of wires constituting the main cable of the suspension bridge into a strand that is a circular bundle 1. A factor (Strand Compactor) comprising: a semicircular reaction zone having a semicircular inner circumferential surface for shaping a plurality of element wires arranged in a quadrangular shape into strands which are circular bundles; A pulling rope coupled with the semi-circular reaction zone to form the remaining semicircle corresponding to the semicircle of the semi-circular reaction zone, and in close contact with the plurality of element wires to pull the element wires; A handle formed by a worker to hold the rotation bar, the rotation bar generating a force to pull the pull rope by rotating the handle; A rotating shaft coupled to the rotating bar and having an angled bolt formed to convert the rotational motion generated by the rotation of the rotating bar into an axial linear motion; And a reaction hole formed with a through hole into which the rotating shaft is inserted, and coupled with the pulling rope to support the pulling rope in response to the angled bolt movement of the rotating shaft. The combinations form a circle, and the plurality of element wires are shaped into strands by rotating the rotating bar until the diameter of the circle reaches a target diameter satisfying the porosity.

Here, the semi-circular reaction zone is formed by circularizing the plurality of element wires arranged in a form close to a rectangle or a hexagon that is not bound between each element wires by air spinning. It is characterized in that the binding force is applied between the element wires.

Here, the pulling rope is characterized in that the plurality of elementary wires together with the semi-circular reaction zone to form a strand of a circular bundle, and pulls the plurality of elementary wires in response to the rotation of the rotation bar to secure the porosity. do.

Here, the lead rods and washers are fastened to the reaction band at both ends of the pull rope is characterized in that the pull rope is fixed to the reaction band.

Strand compactor having a rotary bar according to the present invention, an annular rod, one side is attached to the semi-circular reaction zone, the other side is fastened so as to be movable along the through hole formed in the reaction zone; And a separation prevention key welded to an end of the round bar after assembling the round bar to prevent the reaction table from being separated from the round bar.

Here, the porosity is given by the ratio (outside cross-sectional area of the strand / net cross-sectional area of the bundle of strands), and the porosity may be set to 120% or less.

As another means for achieving the above-described technical problem, the strand forming method using a strand compactor having a rotating bar according to the present invention, the strand (strand) of a plurality of wires (wire) constituting the main cable of the suspension bridge A method of forming a strand using a strand compactor, the method comprising: a) arranging a plurality of element wires through air spinning; b) circularizing the contact surface of the plurality of element wires by bringing the plurality of element wires into close contact with the semi-circular shape of the semi-circular reaction band; c) circularizing the plurality of element wires while rotating the semicircular reaction zone about the entire number of element wires; d) arranging the projected element wires using a hammer to form strands which are circular bundles; e) tightening the pull rope by rotating the rotating bar to reduce the circumferential length of the strand; And f) checking a target diameter corresponding to the porosity of the strand, and winding it with a tape, wherein a semicircle of the semicircular reaction zone and a semicircle of the pulling rope are combined to form a circle, the diameter of the circle A plurality of element wires are shaped into strands by rotating the rotating bar until a target diameter that satisfies this porosity is reached.

Here, the semi-circular reaction zone of step b) is a circular bundle of the plurality of element wires arranged in a form close to the rectangular or hexagon without binding between each element by the air spinning operation of step a). Circularly by (Strand) is characterized in that for applying the restraining force between each element.

Here, the pulling rope of step e) forms the strand of the plurality of elementary wires together with the semicircular reaction band and the circular bundle, and pulls the plurality of elementary wires in response to the rotation of the rotating bar to secure the porosity. It is characterized by being tightened.

Here, the porosity of step f) is given as the ratio (outside cross-sectional area of the strand / net cross-sectional area of the bundle of strands), and the porosity may be set to 120% or less.

According to the present invention, when shaping a plurality of wires constituting the main cable of a suspension bridge into strands that are circular bundles, a plurality of wires are formed into a circle using a rotating bar without additional equipment such as a hydraulic jack, and the tightening operation is easy. It can be performed in a simple manner, thereby minimizing the number of workers.

According to the present invention, as compared with the existing hydraulic strand compactor, the entire surface of the element wire can be better circularized, and the strand compactor can be easily transported by reducing the weight of the strand compactor.

1 is a diagram illustrating a general suspension bridge.
2 is a diagram illustrating a cohesive strand according to the prior art.
3 is a diagram illustrating the application of an initial stress to a steel wire with a hydraulic system according to the prior art.
4 is a photograph illustrating the use of a hydraulic strand compactor according to the prior art.
5 is a configuration diagram of a strand compactor having a rotating bar according to an embodiment of the present invention.
Figure 6 is a view showing the rope immersed in a strand compactor having a rotary bar according to an embodiment of the present invention.
7 is a view showing a semi-circular reaction zone in the strand compactor having a rotary bar according to an embodiment of the present invention.
8 is a view showing a reaction force in the strand compactor having a rotary bar according to an embodiment of the present invention.
9 is a view for explaining the operation of the strand compactor having a rotary bar according to an embodiment of the present invention.
10 is a view showing an element wire rounded using a strand compactor having a rotating bar according to an embodiment of the present invention.
11 is a flowchart illustrating a strand forming method using a strand compactor having a rotating bar according to an exemplary embodiment of the present invention.
12A to 12D are photographs illustrating a process of forming a strand using a strand compactor having a rotating bar, respectively, according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

5 is a configuration diagram of a strand compactor having a rotating bar according to an embodiment of the present invention.

Referring to FIG. 5, a strand compactor 100 including a rotating bar according to an embodiment of the present invention is a strand for shaping a plurality of strands constituting a main cable of a suspension bridge into strands that are circular bundles. As a compact, semi-circular reaction table 110, pull rope 120, rotary bar 130, rotary shaft 140, reaction table 150, lead rods 160, washers 170, round bar 180 and release The prevention key 191 is included.

First, the strand compactor 100 having a rotating bar according to an exemplary embodiment of the present invention includes 400 strands corresponding to one strand of a main cable of a suspension bridge, for example, a main cable made of 400 wire x 32 strands. When the wire is completed by air spinning, it is used to shape individual strands into strands that are circular.

At this time, 400 element wires (for example, about Φ 5 mm wire) constituting one strand are arranged in a form that is not constrained between each element wire in a form close to 20 x 20 rectangles or hexagons by air spinning. These wires are used to perform the circularization and tightening operation to make the strand having a porosity of 120% or less using the strand compactor 100 having the rotation bar according to the embodiment of the present invention. Here, the porosity is given as the ratio (the external cross-sectional area of the strand / the net cross-sectional area of the strand bundle) as the target diameter, and the porosity is preferably set to 120% or less.

The semicircular reaction zone 110 has a semicircular inner circumferential surface to shape a plurality of element wires arranged similarly to a rectangle into strands that are circular bundles. Here, the semi-circular reaction zone 110 is a circular bundle of the plurality of element wires arranged in the form of a rectangular or hexagon close to each other without the binding force between each element by the air spinning (Air Spinning) The force is applied to each elementary wire.

Pulling rope 120 is combined with the semi-circular reaction table 110 to form the remaining semi-circle corresponding to the semi-circle of the semi-circular reaction table 110, and in close contact with the plurality of wires to pull the element wires. . Here, the pulling rope 120 and the semi-circular reaction table 110 and the plurality of wires to form a strand of a circular bundle, the plurality of corresponding to the rotation of the rotation bar 130 to secure the porosity The wires of the wire are pulled and tightened.

Rotating bar 130 has a handle that can be gripped by the worker is formed, by rotating the handle generates a force to pull the pull rope (120). For example, the rotation bar 130 is a reinforcing bar of φ16, may have a length of 800mm, it may be implemented by using a connection bar (Connection Bar).

Rotating shaft 140 is coupled with the rotary bar 130 to convert the rotational movement caused by the rotation of the rotary bar 130 into an axial linear movement, as shown by the reference numeral A, the angled bolt is Formed. For example, the length of the rotating shaft 140 in which the angular bolt is formed may be 1000mm.

The reaction force 150 is formed with a through hole into which the rotation shaft 140 is inserted, and is coupled with the pulling rope 120 to support the pulling rope 120 in response to the angled bolt movement of the rotating shaft 140. .

Accordingly, the semicircle of the semicircular reaction table 110 and the semicircle of the pulling rope 120 are combined to form a circle, and the rotating bar 130 until the diameter of the circle reaches a target diameter that satisfies the porosity By rotating, a plurality of element wires are shaped into strands.

In addition, the lead rods 160 and washers 170 which are fastened to the reaction table 150 are disposed at both end portions of the pulling rope 120 so that the pulling rope 120 is fixed to the reaction table 150. .

Round bar 180 is an annular rod, one side is attached to the semi-circular reaction table 110, the other side is fastened to be movable along the through-hole formed in the reaction table (150).

The release preventing key 191 is welded to an end of the round bar 180 after assembling the round bar 180 to prevent the reaction table 150 from being separated from the round bar 180.

In addition, the guide wire 192 having a length of φ5 and 30 mm may be installed inside the reaction table 150 after assembling the reaction table 150.

On the other hand, Figure 6 is a view showing a rope immersed in a strand compactor having a rotary bar according to an embodiment of the present invention.

Rope 120 in the strand compactor 100 having a rotary bar according to an embodiment of the present invention, as shown in Figure 6, is combined with the above-described semi-circular reaction table 110, the semi-circular reaction table 110 The remaining semicircle corresponding to the semicircle of) is formed, and is in close contact with the plurality of element wires to pull the element wires. Here, the pulling rope 120 and the semi-circular reaction table 110 and the plurality of wires to form a strand of a circular bundle, the plurality of corresponding to the rotation of the rotation bar 130 to secure the porosity The wires of the wire are pulled and tightened. At this time, the semi-circle of the semi-circular reaction table 110 and the semi-circle of the pulling rope 120 is combined to form a circle. For example, the pulling rope 120 is a wire rope of φ 12, the length may be 800mm.

In addition, a lead rod 160 of φ25 and a washer 170 of φ30 which are fastened to the reaction force 150 are disposed at both end portions of the pull rope 120 so that the pull rope 120 is mounted on the reaction force 150. Can be fixed).

On the other hand, Figure 7 is a view showing a semi-circular reaction table in the strand compactor having a rotary bar according to an embodiment of the present invention.

In the strand compactor with a rotating bar according to an embodiment of the present invention, as shown in FIG. 7 a), the semicircular reaction table 110 is shaped to form a plurality of strands arranged similarly to a quadrangular strand. For example, it has a semicircular inner peripheral surface of 60 mm diameter. Here, the semi-circular reaction zone 110 is a circular bundle of the plurality of element wires arranged in the form of a rectangular or hexagon close to each other without the binding force between each element by the air spinning (Air Spinning) The force is applied to each elementary wire.

 In addition, as shown in b) of FIG. 7, insertion portions through which the pulling rope 120 may be inserted are formed at both end portions of the semicircular reaction table 110.

On the other hand, Figure 8 is a view showing a reaction force in the strand compactor having a rotary bar according to an embodiment of the present invention.

In the strand compactor having a rotating bar according to an embodiment of the present invention, the reaction force 150 is formed with a through hole in which the rotating shaft 140 is inserted in the center thereof, as shown in FIG. It is fastened with the pulling rope 120 to support the pulling rope 120 in response to the angled bolt movement of the rotary shaft 140. In addition, the pull rope 120 is inserted into both ends of the reaction table 150 has an insertion portion that can be fixed by the lead rod 160 and the washer 170 is formed. In addition, the reaction table 150 is formed with a through hole that can be fastened so that the round bar 180 is movable.

On the other hand, Figure 9 is a view for explaining the operation of the strand compactor having a rotating bar according to an embodiment of the present invention, Figure 10 is circularized using a strand compactor having a rotating bar according to an embodiment of the present invention It is a figure which shows the element wire which was made.

Strand compactor 100 having a rotating bar according to an embodiment of the present invention, as shown in Figure 9, the strands of a plurality of strands 200 by the semi-circular reaction table 110 and the pulling rope 120 After shaping and then rotating the rotary bar 130, the force generated by the rotation of the rotary bar 130 is converted into a linear motion through the rotating shaft 140, thereby pulling the pulling rope 120 As such, the plurality of element wires are shaped into strands that satisfy the porosity corresponding to the target diameter.

FIG. 10A shows the plurality of element wires 200 arranged in a form close to a rectangle or a hexagon which is not bound between each element wire by an air spinning operation, and FIG. The element wires 200 are circularized into a single circular bundle by the strand compactor 100 having the rotating bar according to the embodiment of the present invention, indicating that the element wires 200 have restraining force.

In addition, in the strand compactor 100 having a rotating bar according to an embodiment of the present invention, the main key for making the porosity (target diameter) is to make the circular bundle (Strand) as close to the circular as possible and tightening operation is performed. . To this end, the strand compactor according to the embodiment of the present invention has a circular shape of the semi-circular reaction zone in close contact with the element wire to circularize the contact surface, and rotates the entire semicircular reaction zone in the cross-sectional direction to cover the entire surface of the plurality of element wires. After rounding, the protrusions are trimmed with hammering, and the circumferential length of the bundle of wires is reduced by pulling the pull rope by rotating the rotary bar by the attraction force. Thereafter, tape winding is performed after checking the porosity (target diameter).

On the other hand, Figure 11 is a flow chart of the strand forming method using a strand compactor having a rotary bar according to an embodiment of the present invention, Figure 12a to 12d is a strand compactor having a rotary bar according to an embodiment of the present invention, respectively Photographs illustrating the process of forming the strands using.

A strand forming method using a strand compactor having a rotating bar according to an embodiment of the present invention, using a strand compactor for shaping a plurality of wires constituting the main cable of the suspension bridge into strands that are circular bundles As a strand forming method, first, a plurality of element wires are arranged through air spinning ( S110 ). 12A illustrates a state of the plurality of element wires 200 after air spinning, and for example, strand shaping of the top saddle portion without using the strand compactor 100 according to the embodiment of the present invention. It is a photograph showing the operation (the operation of inserting a hexagonal strand into a quadrangle and inserting it into the top saddle).

Next, the plurality of element wires are brought into close contact with the semi-circular shape of the semi-circular reaction force band to circularize the contact surface of the plurality of element wires ( S120 ). In this case, the semi-circular reaction zone is circular by the circular strand (strand) of the plurality of element wires arranged in a form close to the rectangular or hexagon without binding between each element by the air spinning (Air Spinning) operation The binding force is applied between the element wires.

Next, the plurality of element wires are circularized while rotating the semi-circular reaction table about the entire number of element wires ( S130 ).

Next, using a urethane hammer to arrange the protruding element wires to form a strand that is a circular bundle ( S140 ). Here, FIG. 12B shows that the strand 200 that is projected using the urethane hammer 300 is arranged to form a strand that is a circular bundle.

Next, as shown in Figure 12c, by rotating the rotating bar 130 tighten the pull rope 120 to reduce the circumferential length of the strand ( S150 ). Accordingly, the semicircle of the semi-circular reaction table 110 and the semi-circle of the pulling rope are combined to form a circle, by rotating the rotating bar 130 until the diameter of the circle reaches the target diameter satisfies the porosity The element wires 200 may be shaped into strands.

Next, the target diameter corresponding to the porosity of the strand is confirmed, and wound with a tape ( S160 ). For example, the porosity is given by the ratio of the outer cross-sectional area of the strand / the net cross-sectional area of the bundle of strands, and the porosity may be set to 120% or less. Here, FIG. 12D shows using the porosity checker 400 to determine whether the diameter of the strand is a target diameter corresponding to the porosity.

According to an embodiment of the present invention, when shaping a plurality of wires constituting the main cable of a suspension bridge into strands that are circular bundles, a plurality of wires can be shaped into a circle without additional equipment such as a hydraulic jack and easy to tighten. Can be carried out, thereby minimizing the number of workers.

According to the embodiment of the present invention, compared with the existing hydraulic strand compactor, the entire surface of the element wire can be circularly favorably carried out and can be easily transported by lightening the strand compactor.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

100: strand compactor with rotating bar
110: semicircular reaction table
120: pull rope
130: rotation bar
140: axis of rotation
150: reaction force
160: salary
170: washer
180: round bar
191: exit lock key
192: guide wire
200: wire
300: urethane hammer
400: porosity checker

Claims (10)

In the strand compactor that forms a plurality of wires constituting the main cable of the suspension bridge into strands that are circular bundles,
A semicircular reaction zone having a semicircular inner circumferential surface for shaping a plurality of element wires arranged similarly to a quadrangle into strands which are circular bundles;
A pulling rope coupled to the semi-circular reaction zone to form the remaining semicircle corresponding to the semicircle of the semi-circular reaction zone, and in close contact with the plurality of element wires to pull the element wires;
A handle formed by a worker to hold the rotation bar, the rotation bar generating a force to pull the pull rope by rotating the handle;
A rotating shaft coupled to the rotating bar and having an angled bolt formed to convert the rotational motion generated by the rotation of the rotating bar into an axial linear motion; And
A reaction hole is formed in which a through hole into which the rotating shaft is inserted is fastened to the pulling rope to support the pulling rope in response to the angled bolt movement of the rotating shaft.
Including,
The semicircle of the semicircular reaction zone and the semicircle of the pull rope are combined to form a circle, and the plurality of wires are shaped into strands by rotating the rotating bar until the diameter of the circle reaches a target diameter satisfying the porosity. Strand compactor provided with a rotating bar. The method of claim 1,
The semi-circular reaction zone is formed by circular spinning of a plurality of element wires arranged in a form close to a rectangle or a hexagon that is not bound between each element wire by an air spinning operation. Strand compactor having a rotating bar, characterized in that for applying a restraining force. The method of claim 1,
The pulling rope rotates with the semi-circular reaction band to form a plurality of strands in a circular bundle strand, and pulls and tightens the plurality of strands in response to the rotation of the rotating bar to secure the porosity. Strand compactor with bar. The method of claim 3,
Lead rods and washers are disposed at both ends of the pull rope and the reaction band is fastened so that the pull rope is fixed to the reaction band, the strand compactor having a rotation bar. The method of claim 1,
An annular rod, one end is attached to the semi-circular reaction zone, the other end is fastened so as to be movable along the through hole formed in the reaction zone; And
A separation preventing key welded to an end of the round bar after assembling the round bar to prevent the reaction table from being separated from the round bar
Strand compactor having a rotary bar further comprising. The method of claim 1,
And said porosity is given by a ratio of (external cross-sectional area of strand / net cross-sectional area of strand) and said porosity is set to 120% or less. In the strand forming method using a strand compactor for shaping a plurality of wires constituting the main cable of the suspension bridge into a strand that is a circular bundle,
a) arranging a plurality of element wires through air spinning;
b) circularizing the contact surface of the plurality of element wires by bringing the plurality of element wires into close contact with the semi-circular shape of the semi-circular reaction band;
c) circularizing the plurality of element wires while rotating the semicircular reaction zone about the entire number of element wires;
d) arranging the projected element wires using a hammer to form strands which are circular bundles;
e) tightening the pull rope by rotating the rotating bar to reduce the circumferential length of the strand; And
f) identifying a target diameter corresponding to the porosity of the strand and winding it with a tape
Including,
A semicircle of the semicircular reaction zone and a semicircle of the pulling rope are combined to form a circle, and a plurality of wires are shaped into strands by rotating the rotating bar until the diameter of the circle reaches a target diameter satisfying the porosity. Strand formation method using the strand compactor provided with a rotating bar. The method of claim 7, wherein
The semi-circular reaction zone of step b) is a circular bundle of the plurality of element wires arranged in a shape close to a rectangle or hexagon that is not bound between each element wire by the air spinning operation of step a). The method of forming a strand using a strand compactor having a rotating bar, characterized in that the circularizing to apply a restraining force between each element wire. The method of claim 7, wherein
The pulling rope of step e) forms a strand of a plurality of elementary wires together with the semicircular reaction force band, and pulls and tightens the elementary wires in response to rotation of the rotating bar to secure the porosity. Strand forming method using a strand compactor having a rotating bar characterized in that. The method of claim 7, wherein
The porosity of step f) is given by the ratio of (external cross-sectional area of the strand / net cross-sectional area of the bundle of strands), and the porosity is set to 120% or less, strand formation method using a strand compactor having a rotating compactor.

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