JPH07197418A - Self-running type wrapping machine for suspension bridge cable - Google Patents

Abstract

PURPOSE:To smooth the running of a wrapping machine by winding a guide rope on a double drum capstan fixed to a wrapping machine mounting main body frame, and starting the capstan to run the wrapping machine. CONSTITUTION:A revolving frame 1 is moved to a cable band 9 to guide a wrapping wire drawn out from a bobbin 2 to the inner-most groove of a capstan of a tension device 5a. After that, the wrapping wire is wound from the outside to the inside several times along the groove, and it is finally guided to the outer-most groove to carry out wrapping work from the end of the cable band 9 through a winding roller. Then, the wrapping machine is stopped in the neighborhood of an intermediate point, and the wound wrapping wire is cut off. Successively, the bobbin 2 is replaced to guide the wrapping wire to a capstan groove of a tension device 5b, and the front end thereof is connected to a cutting-off section of the wire wound on a horizontal cable 4. In addition, the wrapping work is restarted, and winding is not left behind until the following end of the cable band 9 to carry out the wrapping work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrapping machine used for wire wrapping work in cable erection work for suspension bridges.

[0002]

2. Description of the Related Art There are various conventional wrapping machines for suspension bridge cables, and the moving methods are roughly divided into two.
There are types. One is disclosed in Japanese Unexamined Patent Publication No. 60-26884, and as shown in FIG. 16, a constant tension winch in which a wire rope 32 having one end fixed to a body frame 31 of a lapping machine is fixed to the top of the tower. By pulling with 33, the wrapping machine can
Is to be moved in the longitudinal direction.

Another moving method is a real fair 4-208.
It is self-propelled on the parallel cable 4 by the method disclosed in Japanese Patent No. 61. As shown in FIG. 17, this is composed of a fixed frame 38 supported by the parallel cable 4 and movable, and a traveling frame 39 supporting a lapping machine main body 40 traveling on the fixed frame 38. As for the moving method, first, the fixed frame 38 is fixedly supported on the parallel cable 4, and the lapping work is performed while moving the traveling frame 39. When the traveling frame 39 reaches the end of the moving stroke, the traveling frame 39 is fixed to the parallel cable 4. After fixing, the fixed frame 38 is separated from the parallel cable 4, and the fixed frame 38 is moved in the traveling direction of the traveling frame 39.
9 and the fixed frame 38 are moved relative to each other in a lengthy manner.

Further, the wrapping work in the vicinity of the cable band 9 is carried out by the following procedure, which is disclosed in Japanese Utility Model Publication No. 4-20861. That is, as shown in FIGS. 18A to 18C, when the wrapping machine body 40 reaches the wrapping work limit of the cable band 9 (a), the sliding tension device 41 in the wrapping machine body 40 is manually lapped. After moving the machine main body 40 in the direction of the cable band 9, the lapping machine main body 40 is shifted in the direction opposite to the moving direction of the slide tension device 41 (b), and then the wrapping is restarted and the cable band 9 of the cable band 9 is moved. Lapping up to the rear end is performed (c). After that, the traveling frame 39 is moved to pass the cable band 9, and then the slide tension device 41 is moved to the rear of the lapping machine body 40 to restart the lapping work.

[0005]

In the moving method of the lapping machine, the moving method using the constant tension winch 33 of Japanese Patent Laid-Open No. 60-26884 has sufficient accuracy for controlling the tension of the wire rope 32. Will be needed. In particular, in a suspension bridge with a long diameter, when the length of the wire rope 32 becomes long, it becomes difficult to control the tension of the wire rope 32 with high precision due to fluttering of the wire rope 32 due to wind load, and tight wrapping cannot be performed.

[0006] In the measuring and moving method of Japanese Utility Model Publication No. 4-20861, the traveling frame 39 and the fixed frame 38 are used.
It is inevitable that it will be a complicated work because it requires frequent refilling work. Further, regarding the wrapping work near the cable band 9, the tension device 5 cannot be installed on the outer surface of the wrapping machine main body 40 in the tension device slide method, so that the wrapping machine like the pin type cable band 9 as shown in FIG. Since the body 40 and the cable band 9 interfere with each other and the wrapping machine body 40 cannot be overlapped with the cable band 9, the unwrapped portion of the wrapping wire 3 is generated.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems and to provide a wrapping machine for a suspension bridge cable which has good operability even in a suspension bridge with a long diameter and is capable of high quality wrapping. .

[0008]

In a lapping machine capable of moving in the longitudinal direction over a parallel cable 4, a main frame 8 of the lapping machine is drawn from a bobbin 2 rotatably supported by a rotary frame 1. A wrapping mechanism in which tensioning devices 5a and 5b for winding the wrapping wire 3 around the parallel cable 4 with a constant tension are provided so as to project in front of and behind the rotary frame 1, and the parallel cable 4
A traveling mechanism in which a guide rope 6 stretched in the longitudinal direction is wound around a multi-body capstan 7 which is rotationally driven by a drive device, and a main body frame 8 is moved up and down on a parallel wire cable 4 to enable traveling. A self-propelled lapping machine for a suspension bridge cable is provided, which is equipped with a cable band crossover mechanism including a plurality of supporting rollers 44 for supporting and outriggers 42a and 42b.

[0009]

The present invention is an improvement of the running of the lapping machine and the lapping means of the cable band 9 part. That is, as shown in FIG. 1, the traveling means of the wrapping machine has a guide rope 6 stretched in the longitudinal direction of the parallel cable 4 on a multi-body capstan 7 fixed to a body frame 8 to which the wrapping machine is attached. Since winding is performed and the multi-body capstan 7 is driven, smooth traveling can be continuously obtained without fluttering of the guide rope 6 due to slip and wind during traveling.

For wrapping the cable band 9, the tension devices 5a and 5b are provided so as to project in the front and rear of the rotary frame 1, and the rear tension device 5a is provided at the front end of the cable.
At the rear end of the cable, the wrapping wire 3 is rewound to the front tension device 5b to perform the wrapping work. Moreover, since the tension devices 5a and 5b are projected from the rotary frame 1, the cable band 9 and The end portion can be surely lapped without causing interference, and no unwinding occurs.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the examples shown in the drawings. FIG. 1 is a side view of the entire lapping machine of an embodiment of the lapping machine according to the present invention, and FIGS. 2 and 3 are a front view and a side view of a rotary frame 1. The main body frame 8 is movably supported in the longitudinal direction of the parallel wire cable 4 so as to straddle the parallel wire cable 4 in which a large number of metal wires are bundled in parallel. 7 is installed, and both ends of the guide rope 6 fixed in the longitudinal direction of the parallel cable 4 are tensioned to prevent slippage between the multi-body capstan 7 and the guide rope 6. It has been wrapped around the multi-body capstan 7 several times (three times in the drawing).

As shown in FIG. 6, the guide rope 6 is a lever block 11 used to apply tension to the guide rope 6 at the upper end and at the lower end to the guide rope 6.
Through the U bolts 12 attached to the floor beams of the catwalk 10 at appropriate intervals in order to eliminate the influence of the wind on the guide rope 6 by fixing it on the girder via the girder. The long guide rope 6 is stretched over. When the lapping machine is moved, the U-bolt 12 hinders the movement. In that case, the U-bolt which is obstructed is removed, and the U-bolt is reattached after passing through the lapping machine. By this method, there is no need to perform any refilling for moving other than overcoming the cable band 9 of the lapping machine.

As a method of fixing the guide rope 6, when the parallel cable 4 has a gentle slope, the guide rope 6 is fixed.
The lever block 11 is attached to the lower end of the, and the other end of the lever block 11 is connected via a wire rope and a U bolt.
It is also possible to adopt a method of stretching and fixing to the floor beam of the catwalk 10 or a method of winding and stretching the wire rope around the nearest cable band 9 at a portion where the parallel cable 4 has a steep slope. Is.

A main body traveling motor 15 for driving the multi-capsule capstan 7 is installed above the main body frame 8. As shown in FIG. 7, the main body traveling motor 15 is rotated by a pinion gear 16a and a pinion. A bevel gear 18 which is transmitted via a gear 16b to a bevel gear 18a attached to a shaft 17a and meshes with the bevel gear 18a.
It is transmitted to the bevel gear 18c via b and the shaft 17b. The pinion gear 1 from the bevel gear 18c through the bevel gear 18d, the shaft 17c, and the pinion gear 16c.
6d transmits power to the pinion gear 16d and the shaft 1
By driving the multi-body capstan 7 connected via 7d, friction between the guide rope 6 and the two left and right multi-body capstans 7 is used to make the entire lapping machine the longitudinal length of the parallel cable 4. It can move freely in any direction. Here, the multi-capsule capstan 7 and the main body traveling motor 15 can be installed at arbitrary positions within a range that does not cause any trouble.

The rotating frame 1 is restricted in its movement in the axial direction of the main body frame 8 by eight turning rollers 19 installed on the main body frame 8, and is driven by the outer periphery so as to be rotatable with respect to the main body frame 8. The gear 20 is formed, and the turning pinion gear 22 fixed to the output shaft of the turning motor 21 meshes with the driven gear 20 to transmit the rotation of the turning motor 21 to the rotary frame 1.

A plurality of rotary frames 1 (two in the drawing are shown).
Bobbins 2 are rotatably installed.
As shown in FIG. 4, the wrapping wire 3 unwound from the guide wire is guided by the guide roller 23, the tension device 5a or the tension device 5b, and the guide sheave 24, and finally wound around the parallel cable 4 through the winding roller 25. Attached.
The tension device 5a has a structure as shown in FIG.
Wrap the wrapping wire 3 around each capstan 26,
The disc brake 27 installed on one side controls the tension applied to the wrapping wire 3 on the inlet side and the outlet side by tightening the rotary knob 28, pressing the caliber 29, and braking by the brake pad 30. Is.

In the actual lapping work, first,
With the entire wrapping machine installed so that the rotary frame 1 comes to the cable band 9 part, the wrapping wire 3 unwound from the bobbin 2 is transferred to the rear surface with respect to the traveling direction of the rotary frame 1 via the guide roller 23. It is guided to the innermost groove of the capstan 26 of the installed tension device 5a. The wrapping wire 3 is wound from the inner side to the outer side several times (five times in the drawing) along the grooves of the two capstans 26, and finally is guided to the outermost groove to guide the guide sheave 24, the winding wire. The lapping operation is started from the end of the cable band 9 through the attached roller 25 without leaving any unwinding (FIG. 8). The wrapping work is continued as it is until the rotary frame 1 reaches near the midpoint between the cable bands 9, the wrapping machine is temporarily stopped near the midpoint, and the wrapping wire 3 wound near the wrapping roller 25 is provided.
Is cut (FIG. 9).

Next, the entire lapping machine is retracted by the width of the rotating frame 1, the bobbin 2 is replaced with a new one, and this time, the tension device 5b installed on the front side in the traveling direction of the rotating frame 1 is moved. The wrapping wire 3 is guided to the innermost groove of the capstan 26, and the wrapping wire 3 is guided to the outer groove by the above procedure, and the tip is connected to the parallel wire cable 4 via the guide sheave 24 and the winding roller 25. It is connected to the cut part of the wrapped wrapping wire 3 and the wrapping work is restarted (FIG. 10). By this work, it becomes possible to carry out the wrapping work without winding up to the end of the next cable band 9 (FIG. 11).

Here, the bobbin 2 can be replaced at any position between the cable bands 9, such as in the central part between the cable bands 9 and the cable band 9 part, and can be wound around the bobbin 2 in advance. If the wrapping wire 3 has a sufficient length, the bobbin 2 is not replaced and the tension device 5b is not replaced.
It is also possible to only change the wrapping wire 3 to other parts.

When the wrapping machine reaches the portion of the cable band 9, it is necessary to work over the cable band 9, and the work procedure will be described. When the lapping machine reaches the cable band 9 (FIG. 12), the outrigger 42a arranged in front of the traveling direction of the main body frame 8 is lifted by the outrigger jack motor 43 and the cable band 9 is pulled up.
Over, and is again supported by the outrigger jack motor 43 on the parallel cable 4 (FIG. 13). Next, the support roller 44 is attached to the support roller jack motor 45.
And the main body frame 8 is moved to a position where the support roller 44 gets over the cable band 9 (FIG. 14), and finally, the support roller 44 is again supported by the support roller jack motor 45 on the parallel cable 4. , The outrigger 42b arranged rearward with respect to the traveling direction of the main body frame 8 is lifted by the outrigger jack motor 43, the cable band 9 is passed over, and the outrigger jack motor 43 again supports the parallel line cable 4 (see FIG. 15). ), The work of getting over the cable band 9 of the wrapping machine is completed.

[0021]

EFFECTS OF THE INVENTION According to the present invention, even in a suspension bridge with a long span, the operability is good and there is no need to change the wrapping machine in order to move the wrapping machine except when overcoming the cable band 9. In addition to being able to perform a tight wrapping work without receiving the cable band, the cable band 9 can be used in both the saddle type and pin type cable bands 9.
It is possible to prevent the unwrapping of the wrapping wire 3 at a portion.

[Brief description of drawings]

FIG. 1 is an overall side view of a lapping machine according to the present invention.

FIG. 2 is a front view of the rotary frame in the lapping mechanism of FIG.

FIG. 3 is a side view of a rotating frame in the lapping mechanism.

FIG. 4 is a wrapping wire routing diagram.

FIG. 5 is a detailed view of a tension device.

FIG. 6 is a drawing of a stretched guide rope for traveling the main body frame.

FIG. 7 is a diagram of a traveling device power transmission mechanism.

FIG. 8 is an explanatory diagram of a wrapping work including a cable band unit.

FIG. 9 is an explanatory diagram of a wrapping work including a cable band unit.

FIG. 10 is an explanatory view of a wrapping work including a cable band part.

FIG. 11 is an explanatory diagram of a wrapping work including a cable band unit.

FIG. 12 is an explanatory diagram of a cable band passing over.

FIG. 13 is an explanatory diagram of a cable band passing over.

FIG. 14 is an explanatory diagram of a cable band passing over.

FIG. 15 is an explanatory diagram of a cable band passing over.

FIG. 16 is an explanatory diagram showing a conventional constant tension moving method (conventional example 1).

FIG. 17 is an explanatory view showing a conventional measuring movement system (conventional example 2).

18 (a), (b), and (c) are explanatory views of movement states of the tension device movement method in FIG.

FIG. 19 is a diagram illustrating the problem of FIG. 17;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 rotating frame 2 bobbin 3 wrapping wire 4 parallel cable 5a, 5b tension device 6 guide rope 7 compound body capstan 8 body frame 9 cable band 10 catwalk 11 lever block 12 U bolt 15 body traveling motors 16a, 16b, 16c, 16d pinion gears 17a, 17b, 17c, 17d shafts 18a, 18b, 18c, 18d bevel gears 19 swivel rollers 20 driven gears 21 swivel motors 22 swivel pinion gears 23 guide rollers 24 guide sheaves 25 winding rollers 26 capstan 27 disc brakes 28 rotary knob 29 caliber 30 brake pad 31 body frame 32 wire rope 33 constant tension winch 38 fixed frame 39 running frame 40 lapping machine body 41 sp Id-type tensioning device 42a, 42b outrigger 43 outrigger jack motor 44 support roller 45 supporting the roller jack motor 46 winding sheave

Claims (1)

[Claims] 1. A lapping machine that is movable in the longitudinal direction across a parallel cable 4, and a body frame 8 of the lapping machine is provided with a lapping wire 3 drawn from a bobbin 2 rotatably supported by a rotating frame 1. A wrapping wire mechanism in which tensioning devices 5a and 5b for winding the parallel wire cable 4 at a constant tension are arranged so as to project in front of and behind the rotary frame 1, and a guide rope 6 stretched in the longitudinal direction of the parallel wire cable 4 is a driving device. From the traveling mechanism that is wound around the compound capstan 7 that is driven to rotate by the vehicle, and the plurality of support rollers 44 and the outriggers 42a and 42b that support the main body frame 8 to move up and down on the parallel cable 4 so as to travel. A self-propelled wrapping machine for suspension bridge cables, which is equipped with a cable band crossover mechanism.