KR101880691B1 - Worktable carriage system for suspension bridge cable and Repairing method of suspension bridge cable using worktable carriage - Google Patents

Abstract

The present invention relates to a worktable carriage system for a suspension bridge cable, capable of securing economic efficiency through use of a small capacity crane while safely and easily moving the worktable carriage for repairing or reinforcing a main cable of a suspension bridge, and a suspension bridge cable repairing method using the same. According to the present invention, the worktable carriage system for a suspension bridge cable comprises: the worktable carriage to repair the main cable of the suspension bridge and installed to be able to travel along the main cable; a towing winch installed on the front side of the worktable carriage; and a towing wire wound on the towing winch to move the worktable carriage in accordance with operation of the towing winch. The worktable carriages comprises a plurality of unit carriages installed in the longitudinal direction of the main cable to be connected to and separated from each other. The towing winch is installed in the frontmost unit carriage, the frontmost unit carriage includes a recovery winding roll capable of being selectively coupled to the other end of the towing wire, and the unit carriage placed in the middle of the unit carriages includes a wire fixing device capable of selectively fixing the side surface of the towing wire.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a suspended bridge cable repair system, and a suspension bridge cable repair method using the suspension bridge cable,

The present invention relates to a suspended bridge cable workbench system which can safely and easily move a work vehicle to repair or reinforce a main cable of a suspension bridge while securing economical efficiency by using a small-capacity crane, and a suspension cable repair method using a work vehicle will be.

Suspension bridge is mainly used as main bridge, which is constructed by tying up the bridge roof with the main cable as its main feature. It has a good appearance and is capable of a long span that is impossible in arch bridge and cable-stayed bridges.

1, the suspension bridge 1 is provided with a main cable 12 on a main tower 11 and connecting a hanger 13 to a main cable 12 by a cable band 15, And hangs on the hanger (13).

However, in this case, the suspension bridge (1) is required to repair or reinforce cables, such as painting and repairs, if the cable coating or lap is corroded or damaged.

In order to achieve this, a work truck is connected to the main cable so as to be able to run on the main cable so that an operator can be carried on the work truck, as disclosed in Japanese Patent Registration No. 10-1403871.

When the work is completed in the cable section where the work platform car is located, the work platform is moved to the upper part, and the work platform is divided into a plurality of sections according to the height of the cable.

However, in the above-mentioned prior art, since a work truck must be towed by a crane in order to move a work truck, a crane is required every time the work truck is moved, which is troublesome. Also, in the section where the height of the cable is high, the capacity of the crane becomes large, which is not only economical but also has a problem in safety.

In order to solve the above problems, the present invention provides a suspension bridge cable work carriage system capable of safely and easily moving a work carriage for repairing or reinforcing a main cable of a suspension bridge, and a suspension cable repair method using a work carriage do.

The present invention is to provide a suspension bridge cable work suspension system and a suspension bridge cable maintenance method using the work suspension bridge that can be configured to enable movement of a work vehicle with small equipment.

According to a preferred embodiment of the present invention, there is provided a suspension cable for a main cable maintenance work of a suspension bridge, A towing winch provided in front of the work truck; And a pulling wire wound around the pulling winch and moving the work load according to driving of the pulling winch; Wherein the work vehicle is constituted by a plurality of unit brakes that are interconnected and detachable and provided with a plurality of units in the longitudinal direction of the main cable, the pulling winch is provided on the foremost unit bogie, And a wire fixing member capable of selectively fixing the side surface of the pulling wire is provided on the unit truck which is positioned at an intermediate position.

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According to another preferred embodiment of the present invention, the main cable is provided with a hand rope in the longitudinal direction of the main cable at an upper predetermined height, and the work table car is mounted on the upper portion of the hand rope and travels along the hand rope. Cable workbench system.

According to another preferred embodiment of the present invention, there is provided a suspended bridge cable work carriage system, wherein the work platform vehicle is adjustable in height.

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According to another preferred embodiment of the present invention, there is provided a suspension bridge cable repairing method using the suspension bridge cable workbench system, comprising the steps of: (a) installing a work vehicle on an upper portion of a main cable; (b) The front end unit carriage is forwardly moved by fixing the other end of the traction wire, one end of which is connected to the hoisting winch for traction, to the front cable band, separating the foremost unit carriage from the rear unit carriage, And releasing the other end of the traction wire from the cable band; (c) connecting the other end of the traction wire to the recoil-take-up roll of the rearmost unit truck, and winding the same; (d) fixing the wire fasteners of the unit trucks to be moved next to the pulling wires, moving the unit trucks to the rear of the unit trucks in front by driving the pulling winch, and then releasing the fixing of the wire fasteners Completing the movement of the work balancer by repeating one or more times; And (e) performing maintenance work on the main cable in the moved work truck; The present invention provides a method for repairing a suspension bridge cable using a work carriage.

According to the present invention, a suspended bridge cable workbench system capable of safely and easily moving a work vehicle for repairing or reinforcing a main cable of a suspension bridge while securing economical efficiency by using a small-capacity crane, and a suspension cable repair method using a work vehicle .

Particularly, in the present invention, a plurality of unit balances having a short length can be connected to constitute a work truck.

Thus, when the unit carriage is constituted by a pair of cages symmetrically disposed on the left and right sides of the main cable, and the upper and lower portions of the pair of cages are respectively connected to the upper frame and the intermediate frame, The work truck can be safely moved.

It is also possible to move the unit bogies constituting the work truck with a small capacity winch for traction. As a result, the capacity of the crane can be reduced to secure economical and safety.

1 is a perspective view showing a structure of a suspension bridge;
Fig. 2 is a side view showing a state in which a suspension cable work carriage system of the present invention is applied to a main cable; Fig.
Fig. 3 is a perspective view showing a work truck constituted by a plurality of unit trucks; Fig.
Fig. 4 is a side view of a work truck equipped with a recovery wind-up roll; Fig.
5 is a cross-sectional view showing an embodiment of a wire fixing hole;
6 is a longitudinal sectional view showing a state in which a work bench car is installed;
FIGS. 7 to 10 are views showing steps of each step of a suspension cable repair method using a working truck according to an embodiment of the present invention. FIG.
11 is a view showing a part of a process of a suspension bridge cable repair method using a working truck according to another embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

Fig. 2 is a side view showing a state in which the present invention suspension cable work carriage system is applied to a main cable. Fig.

As shown in FIG. 2, the suspension bridge cable work carriage system of the present invention is for maintenance work of the main cable 12 of the suspension bridge 1, and includes a work carriage 2 provided to be able to run along the main cable 12, ; A towing winch (3) provided at the front of the work truck (2); And a traction wire (4) wound around the tow hoist (3) and moving the work bin (2) in accordance with the driving of the tow hoist (3); . ≪ / RTI >

The present invention can safely and easily move the work carriage (2) for maintenance or reinforcement work of the main cable (12) of the suspension bridge (1) while moving the work carriage (2) And a method of repairing a suspension bridge cable using a bogie system.

The work carriage 2 can travel along the main cable 12 as shown in FIG.

1 indicates the maintenance operation of the main cable 12 and the moving direction of the work carriage 2. [

In addition, circles indicated by dashed lines in Fig. 1 indicate installation positions of the work carriage 2. Specifically, in the case of the sideways crossing, the work truck 2 is installed at the end of the main cable 12. In the case of main span, the work truck 2 is installed at the center of the main cable 12, The maintenance work of the main cable 12 is carried out.

A pulling wire 4 is wound around a pulling winch 3 to pull the work load 2 along with the driving of the pulling winch 3 .

2, the pulling wire 4 can be secured to the front cable band 15 and the pulling wire 4 can be pulled by driving the pulling winch 3 to move the work loader 2 forward It is movable.

Fig. 3 is a perspective view showing a work vehicle constituted by a plurality of unit brakes.

3, the work carriage 2 is composed of a plurality of unit trucks 2a, 2b and 2c which are provided in the longitudinal direction of the main cable 12 and can be connected and disconnected from each other, The winch hoisting machine 3 may be provided on the foremost unit car 2a.

Since the length of the work carriage 2 generally corresponds to the distance between the cable bands 15, a towing winch 3 with a large load and a large capacity is required.

Further, when the curvature of the main cable 12 is small, it is separated from the roller 26 of the work carriage 2, and it is difficult to move the work carriage 2.

Therefore, a plurality of short unit trucks 2a, 2b, 2c can be detachably connected and the work truck 2 can be configured to be movable with a small-capacity tow truck 3 for traction.

The plurality of unit bogies (2a, 2b, 2c) can be bolted to each other.

In order to sequentially move the plurality of unit brakes 2a, 2b, 2c, the foremost unit bogie 2a is moved forward by a predetermined distance and fixed. The pulling wire 4 connected to the pulling winch 3 of the foremost unit bogie 2a is connected to the pulling winch 3 for the back pulling and sequentially moved toward the foremost unit bogie 2a.

The worker repeatedly fixes the traction wire 4 to the next unit carriage 2b, 2c after fixing the traction wire 4 to the previous unit carriage 2a, 2b.

6, the unit trucks 2a, 2b, 2c can be configured such that a pair of cages 21 are symmetrically disposed on both sides of the main cable 12 (see FIG. 6) .

The cage 21 on both sides can connect the upper portion with the upper frame 22. [

The cage 21 on both sides can connect the lower portion of the main cable 12 to the intermediate frame 23 at the lower portion thereof.

When the upper frame 22 is provided on the upper portion of the main cable 12 and the intermediate frame 23 is provided on the lower portion of the main cable 12, the unit brakes 2a, 2b, 2c are prevented from falling off the main cable 12 can do.

When the unit brakes 2a, 2b, 2c are initially installed on the main cable 12, they should not interfere with the intermediate frame 23. For this purpose, the intermediate frame 23 can be detachably fixed to the cage 21.

The traction wire 4 may be configured to be coupled to the intermediate frame 23 of the unit bogies 2a, 2b, 2c and to be pulled and connected to the cages 21 on both sides to be towed It is possible.

Fig. 4 is a side view of a work carriage provided with a rotatable winding roll, and Fig. 5 is a cross-sectional view showing an embodiment of a wire fastener.

As shown in Fig. 4, the unit truck 2c in the last room is provided with a rotating wind-up roll 24 capable of selectively coupling the other end of the tow wire 4, And a wire fixing hole 25 for selectively fixing the side surface of the wire fixing member 4.

The pulling wire 4 may be configured such that one end thereof is wound around the pulling winch 3 and the other end thereof is coupled to the winding roll 24.

The unit carriage 2b to be moved forward is fixed to the middle of the pulling wire 4 with the wire fixing port 25. [

When the pulling wire 4 is wound by driving the pulling winch 3, only the unit carriage 2b fixed to the pulling wire 4 by the wire fixing port 25 can be moved forward. Thereafter, the fixing of the wire fixing hole 25 is released, and the drawing-in winding roll 24 is rotated in the opposite direction to withdraw the drawing wire 4 backward.

The unit bogie can be sequentially moved forward by repeating the above-described procedure for the number of unit bogies to be moved.

The operator does not need to manually move the traction wire 4 for each unit carriage 2a, 2b, 2c and fix it, which is convenient.

The wire fixing hole 25 is preferably provided in front of the unit carriage 2b to facilitate pulling of the unit carriage 2b.

The wire fixing hole 25 is preferably coupled to the intermediate frame 23.

Referring to FIG. 5, one embodiment of the wire fastener will be described in detail.

5 (a) is a cross-sectional view showing a state in which the fixing of the pulling wire 4 by the wire fixing hole 25 is released. That is, the pulling wire 4 is unlocked to recover the pulling wire 4 or to move the other unit carriage 2a, 2b, 2c.

5 (b) is a cross-sectional view showing a state in which the traction wire 4 is fixed by the wire fixing port 25. As shown in Fig. This is a state in which the traction wire 4 is fixed when the unit trucks 2a, 2b, 2c are moved forward.

The wire fixing tool 25 may include a main body 251, a wedge 252, a pressing tool 253, a handle 254, and a spring 255.

The main body 251 can be formed into a cylindrical shape through which the pulling wire 4 is passed. An inclined wedge hole is formed at the entrance of the main body 251.

The wedge 252 selectively secures the traction wire 4.

The pressurizing member 253 presses the wedge 252 to the inside of the wedge hole.

The pushing tool 253 can be screwed to the outer circumferential surface of the main body 251.

The handle 254 rotates the pushing tool 253 to move the wedge 252 forward or backward.

The spring 255 presses the wedge 252 outward to maintain the state where the pulling wire 4 is unfixed.

Fig. 6 is a longitudinal sectional view showing a state in which a work bench car is installed. Fig.

6, a hand rope 16 is provided at a predetermined height above the main cable 12 in the longitudinal direction of the main cable 12 and the work carriage 2 is connected to the main rope 16 So as to travel along the hand rope 16.

The work carriage 2 can be directly mounted on the main cable 12 and run on the main cable 12. [ However, in the main cable 12, the cable band 15 is coupled for each position of the hanger 13, and interference occurs during traveling of the work carriage 2.

Therefore, by using the hand rope 16 provided on the main cable 12 as the running rail of the work carriage 2 for the movement of the worker, the work carriage 2 without interference with the cable band 15 engaged with the hanger 13 ).

The hand rope 16 is fixable to the cable band 15 by a support 17.

The hand ropes 16 may be provided on both sides of the main cable 12 in a pair.

Each of the unit trucks 2a, 2b and 2c constituting the work carriage 2 may be provided with a roller 26 which is stationary and moves on the hand rope 16 below the center of the upper frame 22.

It is preferable that the operator pushes or pulls the work carriage 2 at the front and rear of the work carriage 2 and confirms the mounting state of the roller 26 so that the work carriage 2 is not released during the movement of the work carriage 2 .

The work carriage 2 can be configured to be adjustable in height.

The height of the work carriage 2 can be adjusted according to the height of the hand rope 16, the type of work to be performed, and the like.

The vertical frame 221 at both ends of the upper frame 22 is inserted into the vertical frame 211 of the cage 21 and the vertical frames 211 and 221 are fixedly coupled with the plurality of bolts The height of the carriage 2 can be adjusted (see Fig. 6).

FIGS. 7 to 10 are views showing steps of each step of a suspension cable repair method using the working truck according to an embodiment of the present invention.

The present invention relates to a method for repairing a suspension bridge cable using a suspension bridge cable work suspension system of the present invention.

The suspension bridging cable repair method using the operation truck of the present invention uses a suspension bridge cable work suspension system in which the work truck 2 is composed of a plurality of unit trucks 2a, 2b, 2c which are interconnected and detachable.

(A) The work carriage 2 is installed on the upper portion of the main cable 12 and the maintenance work of the main cable 12 is performed (FIG. 7).

The work carriage 2 carries out painting or repair work on the main cable 12 in a section between the cable bands 15 in a state where the foremost unit carriage 2a is fixed to the cable band 15. [

Next, (b) the other end of the traction wire 4 connected at one end to the tow hoist 3 is fixed to the front cable band 15 ', the forefront unit truck 2a is connected to the rear unit truck 2b, And the towing winch 3 is driven to move the forefront unit truck 2a forward so as to be secured to the front cable band 15 and the other end of the towing wire 4 to the cable band 15 ' (Fig. 8).

The traction wire 4 is secured to the front cable band 15 '.

The traction wire 4 can be secured to the cable band 15 or the cable band 15 'to be moved next to the work carriage 2. Fig. 8 shows a state in which the cable band 15 'next to the front is secured.

Thereafter, (c) the other end of the traction wire 4 is fixed to the rear unit carriage 2b, and the rear unit carriage 2b is moved to the rear of the unit carriage 2a at the front And the other end of the traction wire 4 is fixedly disengaged from the unit carriage 2b at least one time or more to complete the movement of the work carriage 2 (Figs. 9 (a) and 9 b)).

Accordingly, the rear unit brakes 2b can be sequentially moved.

Finally, the maintenance work of the main cable 12 is performed in the work truck 2 whose position has been shifted (Fig. 10).

Even in this case, the forefront unit carriage 2a is secured to the cable band 15 in the state where the movement of the work carriage 2 is completed, but the cable band 15 ) In advance.

Since the work carriage 2 is secured to the cable band 15, the movement distance corresponds to the distance between the cable bands 15 and 15 '.

Therefore, it is preferable that the length of the work carriage 2 is formed to be similar to the distance between the cable bands 15, 15 '.

11 is a view showing a partial process of a suspension bridge cable repairing method using a working truck according to another embodiment of the present invention.

The method for repairing a suspension bridge cable using the working truck according to the present invention shown in FIG. 11 relates to a method for repairing a suspension cable using a suspending bridge cable workbag system of the present invention provided with a recovery winding roll 24 and a wire fixing hole 25 will be.

(A) The work carriage 2 is installed on the upper portion of the main cable 12 and the maintenance work of the main cable 12 is performed. (B) fixing the other end of the traction wire 4 connected at one end to the tow hoisting machine 3 to the cable band 15 'at the front and separating the foremost unit truck 2a from the rear unit truck 2b The front winder unit 2a is moved forward by driving the winder 3 for traction and secured to the front cable band 15 and the other end of the traction wire 4 is released from the cable band 15 ' .

The steps (a) and (b) are as described above with reference to FIGS. 7 and 8. FIG.

Next, (c) the other end of the traction wire 4 is connected to the recovery and take-up roll 24 of the rearmost unit truck 2c and wound.

(D) fixing the wire fixing port 25 of the unit truck 2b to be moved next to the pulling wire 4 and driving the unit 2b to move the unit truck 2a forward And then releasing the fixing of the wire fixing tool 25 is repeated at least once or more to complete the movement of the work carriage 2.

FIG. 11 (a) shows the process of moving the second unit carriage 2b.

In this case, the wire fixing port 25 of the second unit carriage 2b is fixed to the pulling wire 4, and the wire fixing port 25 'of the unit carriage 2b' So that only the truck 2b is moved.

11 (b) shows the process of moving the rearmost unit carriage 2c.

In this case, the reel unit wire 2c may be provided with a separate wire fixing hole 25, but the pulling wire 4 can be pulled and moved while the rotation of the reel-up / take-up roll 24 is fixed.

Finally, the maintenance work of the main cable 12 is performed in the work carriage 2 whose position is shifted (e).

The step (e) is as described above with reference to FIG.

1: Suspension bridge 11: pylon
12: Main cable 13: Hanger
14: top plate 15: cable band
16: Hand rope 17: Holding
2: Work truck 2a, 2b, 2c: Unit truck
21: Cage 211: Vertical frame
22: upper frame 221: vertical frame
23: Middle frame 24: Reciprocating roll
25: wire fixing hole 251:
252: Wedge 253:
254: handle 255: spring
26: Rollers 3: Towing winch
4: pull wire

Claims (7)

For maintenance work on the main cable (12) of the suspension bridge (1)
A work carriage (2) provided to be able to run along the main cable (12);
A towing winch (3) provided at the front of the work truck (2); And
A pulling wire 4 wound on the pulling winch 3 to move the work load 2 as the pulling winch 3 is driven; Respectively,
The work truck 2 is constituted by a plurality of unit trucks 2a, 2b and 2c which are provided in the longitudinal direction of the main cable 12 and can be connected to and disconnected from each other, Unit 2a,
The unit bogie 2c in the last chamber is provided with a rotatable winding-up roll 24 capable of selectively engaging the other end of the traction wire 4, and the side of the traction wire 4 is selectively And a wire fixture (25) that can be fixed to the suspension bridge (25).
delete delete The method of claim 1,
A hand rope 16 is provided at a predetermined height above the main cable 12 in the longitudinal direction of the main cable 12 and the work carriage 2 is mounted on the upper portion of the hand rope 16, ) Of the suspension cable.
The method of claim 1,
Characterized in that the work carriage (2) is adjustable in height.
delete The present invention relates to a suspension cable repair method using a suspension bridge cable work suspension system according to claim 1,
(a) installing a work carriage (2) on an upper portion of a main cable (12) and performing maintenance work on the main cable (12);
(b) fixing the other end of the traction wire 4 connected at one end to the tow hoisting machine 3 to the cable band 15 'at the front and separating the forefront unit truck 2a from the rear unit truck 2b Moving the forefront unit truck 2a forward by driving the traction winch 3 to secure it to the front cable band 15 and releasing the other end of the traction wire 4 from the cable band 15 ';
(c) connecting the other end of the traction wire (4) to the recovery and take-up roll (24) of the rearmost unit truck (2c) and winding it;
(d) The wire fixing port 25 of the unit carriage 2b to be moved next is fixed to the pulling wire 4 and the unit carriage 2b is moved to the front unit carriage 2a by driving the pulling winch 3, Moving the work carriage (2) to the rear of the work carriage (2) and fixing the wire fixing port (25) to each other; And
(e) performing a maintenance operation of the main cable (12) in the moved work bin (2); Wherein the suspension bridge cable is constructed to include a plurality of cables.

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