JP3042586B2 - Transfer method for cable laying and transfer device used for it - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of laying a cable used for laying a cable such as a power cable, a communication cable, an optical fiber cable, etc. in the tunnel, and drawing the cable into the tunnel. The present invention relates to a transfer device used for the transfer.

[0002]

2. Description of the Related Art Conventionally, there has been a method shown in FIG. 5 as one of methods for drawing various cables such as a power cable, a communication cable and an optical fiber cable into a sinus. That is, a cable (long object) B is pulled out from a cable drum A installed on the ground, and the cable B is guided by a number of guide rollers C arranged along the laying route, and arranged along the laying route. While being pulled by a large number of holing machines F, they are mechanically drawn into the manhole D and the underground passageway E. As shown in FIG. 6, the holing machine F used here is a device which can be fed in the direction of rotation of the belt G by sandwiching both sides of the cable B between two opposing rotating belts G.

[0003]

However, the above-mentioned method of drawing in a cable and the holing machine used therein have the following problems. . When the cable B is pulled by the holing machine F, the cable B may come off from the roller C or the holing machine F. In this case, the work period may be delayed due to the interruption of work or the cable B may be damaged. is there. . If many holing machines F do not operate in synchronization, the cable B pulled by the holing machine F
May slip, bend, twist, or swing up and down. In this case, the cable B may be damaged or come off the holing machine F. . In order to prevent such accidents, manhole D
In addition, a large number of workers I must be placed in the underground passageway E to monitor the laying state of the cable B, but doing so increases labor costs.

[0004] Recent ultra-high voltage cable (voltage 375k
(V or more), there is a tendency to reduce the number of cable connection points, reduce the connection cost, shorten the connection work period and the entire work period of the laying work, and lengthen the cable in order to reduce the work cost. Lengthening the cable causes the cable drum to become larger, which makes it difficult to secure the installation space for the cable drum at the installation site, restricts transportation to the installation site, and makes it extremely difficult to route the cable into the tunnel. Is limited to In this way, if the length of the cable is increased, the cable drawing distance will be several times longer than before, the drawing work will be more difficult, and in proportion thereto, more laying equipment will be required, Many workers must be placed in the tunnel, which increases equipment and labor costs, resulting in a significant cost increase.

[0005] An object of the present invention is to efficiently and safely use cables with a small number of people when laying cables.
Moreover, it is an object of the present invention to provide a cable laying transfer method and a transfer device used for transferring the cable so that the surface of the cable is not damaged.

[0006]

According to a first aspect of the present invention, there is provided a transport method for laying a cable, comprising a plurality of support carts movably mounted on an end guide rail provided in a cable transport direction. And a magnetic belt that can be magnetically attracted to the guide rails is provided on these support carts, the cable is supported by the connected support carts, and the magnetic belt is rotated in the longitudinal direction of the guide rails, thereby supporting the support carts. The carriage is moved from one longitudinal end of the guide rail to the other end, and the cable is conveyed along the guide rail.

According to a second aspect of the present invention, there is provided a transport method for laying a cable, wherein the cable is supported by a plurality of support carts movably attached to an end guide rail provided in a cable transport direction. The plurality of supporting carts are connected by a connecting tool, and a magnetic belt capable of being magnetically attracted to the guide rail is provided on some of the plurality of connected supporting carts, and the magnetic belt is attached in the longitudinal direction of the guide rail. To move the support trolley from one end of the guide rail in the longitudinal direction to the other end and tow another support trolley in the same direction to convey the cable along the guide rail.

According to a third aspect of the present invention, a cable laying transfer device is connected to an end guide rail disposed in a cable transfer direction so as to be movable along the guide rail and to support the cable. A support belt, and a magnetic belt that can be magnetically attracted to the guide rail, and a magnetic belt that is magnetically attracted to the guide rail is rotated in the longitudinal direction of the guide rail. And a drive mechanism for moving the support cart from one end of the guide rail to the other end.

[0010]

According to the first aspect of the present invention, in the method of laying a cable according to the first aspect, the cable 1 is supported by the magnetic belt 5 while supporting a portion of the cable 1 in the longitudinal direction with a plurality of supporting carts 3.
Is moved along the guide rails 2, so that excessive force is hardly applied to the cable 1 during transportation, and the cable 1 does not come off from the support cart 3 during transportation, so that the cable 1 can be transported safely. .

According to a second aspect of the present invention, a plurality of support carts 3 for conveying the cable 1 are provided.
Are connected by the connecting tool 4 so that the cable 1 can be transported by driving a part of the support carts 3 by the magnetic belt 5.

According to the third aspect of the present invention, the support belt 3 is caused to run on the guide rail 2 by the rotation of the magnetic belt 5 while the magnetic belt 5 of the support rail 3 attracts the guide rail 2 while adsorbing the guide rail 2. Therefore, the support cart 3 can travel on the guide rail 2 reliably even when the guide rail 2 is vertical, and therefore, the cable 1 can be transported safely and reliably.

[0014]

FIGS. 1 and 2 show a first embodiment of a cable laying transfer device according to the present invention. In this embodiment, a guide rail 2 is erected on a ceiling or a wall in a tunnel. This is an example in which the supporting carriage 3 is installed and the guide rail 2 is suspended and travels. Further, a magnetic belt 5 in which the supporting carriage 3 is attached to the guide rail 2 side and a driving mechanism 6 are magnetically driven. This is an example of a case in which the driving is performed.

The support cart 3 is suspended and supported below the guide rail 2 by four driven rollers 24 protruding upward and attached, and the traveling along the longitudinal direction of the guide rail 2 is free. Has become. A chain block 25 is attached to the lower surface of the support cart 3 so that the cable 1 can be suspended and supported by a chain 26 hanging down from the chain block 25. In this case, the cable 1 is directly connected to the chain 26.
May be suspended, but the chain 26
The chain 26 may be damaged by the rope 2
7 may be attached and the cable 1 may be hung by the rope 27. The length of the chain 26 can be adjusted by the chain block 25, so that the cable 1 can easily be lowered immediately after the cable 1 is pulled in and placed on a receiving device provided on the wall surface in the cave. Has become.

A magnetic body 28 is attached to the upper surface of the support truck 3, that is, the surface facing the guide rail 2. The magnetic body 28 is for magnetically attracting the magnetic belt 5 provided on the guide rail 2. Accordingly, when the magnetic belt 28 is formed of a magnet (for example, a permanent magnet) that generates a magnetic force, the magnetic body 28 is formed of an iron plate or the like that can be magnetically attracted to the magnet, or the magnetic belt 5
When the magnetic belt 5 does not generate magnetic force and can be attracted to a magnet (permanent magnet), the magnetic belt 5 is constituted by the same magnetic belt 5 and a attractable magnet (permanent magnet). . When the magnetic body 28 is formed of an iron plate or the like, and the support cart 3 is formed of an iron plate or the like, since the support cart 3 itself can be the magnetic body 28, as shown in FIG. It is not necessary to provide a new magnetic body 28 again.

The support carts 3 are mounted on the guide rails 2 as shown in FIG. In this figure, the magnetic body 28 is attached to all of the supporting carts 3. However, if it is not necessary to drive all the supporting carts 3 individually, the magnetic bodies 28 may be attached to every several carts. it can. The length of the connecting member 4 is set to an appropriate size according to the method of supporting the cable 1.

The guide rail 2 is formed in a rail shape by connecting a large number of I-beams, H-beams and the like, and is installed in a cable laying line (in a canal). A magnetic belt 5 that can be magnetically attracted to the magnetic body 28 of the support cart 3 is provided on the lower surface of the guide rail 2.

As described above, when the magnetic body 28 is made of an iron plate or the like that does not generate a magnetic force, the magnetic belt 5 is formed of a permanent magnet or the like, and the magnetic body 28 is formed of a permanent magnet or the like that generates a magnetic force. In this case, it is constituted by an iron plate or the like or a permanent magnet which is attracted to the magnet. Specifically, the configuration is as follows. . When the magnetic belt 5 has a magnetic force, as shown in FIG. 1, a large number of magnets 31 are attached to the outer peripheral surface of a belt 30 such as a rubber belt applied between a driving roller 22 and a driven roller 23.
Attach and configure. In this case, a permanent magnet is desirable as the magnet 31, but an electromagnet may be used as long as the structure is not complicated. In any case, a strong magnet is used as the magnet 31 so that, for example, the support carriage 3 does not slip even on the guide rail 2 installed vertically. . When the magnetic belt 5 does not have a magnetic force, a large number of small iron plates or the like are attached to the outer peripheral surface of a belt such as a rubber belt rotatable between the driving roller 22 and the driven roller 23. Further, the belt itself may be made of metal which can attract magnets.

The magnetic belt 5 is driven to rotate in the longitudinal direction of the guide rail 2 by a drive mechanism 6 provided on the lower surface of the guide rail 2. This magnetic belt 5
And the drive mechanism 6 are provided at regular intervals in the longitudinal direction of the guide rail 2 from one end to the other end of the guide rail 2, and the support cart 3 is continuously driven by the magnetic belt 5 and the drive mechanism 6. It is so. The interval between the attachment of the magnetic belt 5 and the drive mechanism 6 is appropriately determined in accordance with the length of the magnetic body 28 provided on the support cart 3. Even if there is one, the magnetic material 2 must be
8 is magnetically attracted and driven by the rotation of the support belt 5.

The driving mechanism 6 includes a driving roller 22 and a driven roller 23 attached to the back surface of the guide rail 2 at intervals, and an electric motor 2 provided on the driving roller 22 side.
0, and a belt 21 that connects the drive roller 22 and the electric motor 20. The magnetic belt 5 is rotatably attached to the drive roller 22 and the driven roller 23. When the electric motor 20 is rotated, the magnetic belt 5 is rotated. In addition,
The drive roller 22 and the driven roller 23 are mounted at appropriate positions so that the magnetic belt 5 can be magnetically attracted to the magnetic body 28 of the support cart 3.

An electric wire (not shown) wired along the guide rail 2 is connected to the electric motor 20 of each drive mechanism 6, and the electric motor 2
Controller for controlling 0 (not shown)
Is connected. By operating this controller in this transfer apparatus, all the electric motors 20 are turned on / off.
F control, rotation speed control, and rotation direction control can be performed. And by this, the support cart 3
Can be run on the guide rail 2 and stop,
It can accelerate, decelerate, and change directions.

[0023]

FIG. 3 shows a second embodiment of the cable laying transfer device according to the present invention. The drive of the support trolley 3 to be run on the guide rail 2 is performed by the support trolley 3 side. This is an example of a case where the operation is performed by the magnetic belt 5 and the driving mechanism 6 attached to the motor.

As in the first embodiment, the support cart 3 is suspended and supported below the guide rail 2 by four driven rollers 24 protruding upward and mounted so as to be able to travel along the guide rail 2. Have been. However, the magnetic belt 5 and the drive mechanism 6 described in the first embodiment are attached to the upper surface of the support cart 3, that is, the surface facing the guide rail 2.

It should be noted that the magnetic belt 5 is
Belt 3 that is rotatable around roller 2 and driven roller 23
0, and a number of magnets (permanent magnets) 31 attached to the outer peripheral surface to magnetically attract the guide rail 2 and are made of a metal that does not generate a magnetic force described in the first embodiment. Is not used. This is because it is difficult to configure the guide rail 2 with a magnet and it is not practical.

The electric motor 20 of the drive mechanism 6 is supplied with electric power from the guide rail 2 side via a power supply mechanism (not shown) such as a pantograph of a train. Further, the electric power on the guide rail 2 side can be controlled by a controller (not shown), and the controller allows the support carriage 3 to run on the guide rail 2. In this case, the support cart 3 can be stopped, accelerated / decelerated, and the traveling direction can be changed by operating the controller.

In the case of this device, a drive source composed of a magnetic belt 5 and a drive mechanism 6 may be provided on all the support trucks 3 attached to the guide rails 2. However, in order to simplify the device, some drive sources are provided. A drive source may be provided every other time. In this case, the supporting truck 3 having no driving source is the supporting truck 3 having the driving source.
Is pulled by the connector 4.

[0028]

FIG. 4 shows a third embodiment of a cable laying transfer apparatus according to the present invention, in which a guide rail 2 is installed on a floor in a cave and a support cart 3 is provided. This is an example of a case where the vehicle runs on the guide rail 2.

A durable receiving bracket (supporting tool 19) capable of supporting the cable 1 is supported on the upper part of the supporting cart 3 so that the cable can be transported while supporting the cable 1 in the longitudinal direction. Is available. In this case, the cable 1 placed on the support 19 may be fixed to the support 19 with a rope or the like so as not to fall.

The support carriage 3 may be provided with a magnetic belt 5 and a drive mechanism 6 on the support carriage 3 side so that the guide rail 2 can run. And a number of drive mechanisms 6 may be attached so that the guide rail 2 can travel.

[0031]

[Embodiment of the method of transporting a cable] Next, the method of transporting a cable according to the present invention will be described. This is an example of a drawing operation in which the cable 1 wound around the cable drum is drawn into the manhole and the inside of the cave from outside the manhole which is an entrance to the cave.

In this case, the cable 1 wound around the cable drum is pulled out from the cable drum, and the leading end of the cable 1 is brought to the guide rail 2 installed along the line into which the cable 1 is drawn. For example, as shown in FIG. 2, a plurality of support carts 3 connected by a link (chain) 4 are waiting on the guide rail 2, and the cable 1 is a support tool of the foremost support cart 3 among them. Attach to 19.

The leading support truck 3 is caused to travel on the guide rail 2 and is sent into the manhole, whereby the cable 1 is drawn into the manhole. Top support cart 3
When the chain 4 is stretched by this and the next support truck 3 travels on the guide rail 2, the cable 1 is set on the support 19 of the support truck 3, and the cable 1 is put together with the support truck 3 in the manhole. Draw in.

In this way, the cable 1 is successively supported at intervals in the longitudinal direction of the cable 1 at intervals of 2 to 3 m by the support 19 of the support truck 3, and the cable 1 is drawn into the manhole and the cave. Then, when the end of the cable 1 reaches the end of the laid line, the support truck 3 running on the guide rail 2 is stopped at the same time. Then, the cable 1 is removed from each of the stopped supporting carts 3 and the cable 1 is set on a receiving member provided at a predetermined position in the sinus, and the installation is completed.

When the cable 1 is drawn from the manhole into the cave, it is desirable that the cable 1 supported by the support trolley 3 does not come into contact with the edge of the manhole or other places. For example, even in a place where the guide rail 2 is provided vertically along the vertical hole of the manhole, it is desirable that the cable 1 does not collide with the support cart 3 or other objects. For this purpose, the support 19 of the cable 1 is
Make the cable rigid as shown in
It is better not to sway and hit the support cart 3 or hit other parts.

In this transport method, the guide rails 2 can be laid on the floor surface or erected on a wall surface or a ceiling, but can be selected according to the work convenience. .

In the case where a steel material which can serve as the guide rail 2 enabling the support cart 3 to travel in the cave has already been installed, this can be used as the guide rail 2, and in this case, the construction period of the drawing work can be shortened. , Construction costs can be reduced.

As a driving method of the support truck 3, a magnet type propulsion system called a BTM system can be adopted. In this case, the guide rail 2 as shown in FIG.
A system in which the magnetic belt 5 and the driving mechanism 6 are provided on the side of the supporting carriage 3 as shown in FIG.

When the magnetic belt 5 and the drive mechanism 6 are provided on the support cart 3 side, the magnetic belt 5 and the drive mechanism 6 may be attached to all the support carts 3.
When connecting the supporting carts 3 with the chains 4, the supporting carts 3 may be attached every few carts.

[0040]

The transfer method for laying a cable according to claims 1 and 2 has the following effects. . During the transfer, an excessive force is hardly applied to the cable, and there is basically no derailment of the cable, so that safe and reliable transfer can be performed. . Therefore, there is no need to arrange a large number of observers along the laid track, and it is possible to reduce labor costs. . In many cases, a guide rail is provided in the cave, and in this case, it is possible to further shorten the construction period and reduce the construction cost.

According to a third aspect of the present invention,
Since the traveling performance of the supporting trolley is high and the vehicle can travel on a vertical or steeply inclined guide rail, the work of vertically pulling into the manhole can be easily performed.

[Brief description of the drawings]

1A and 1B are a first embodiment of a transfer method for laying a cable according to the present invention and a device used therein, wherein FIG. 1A is a perspective view of the transfer device, and FIG. 1B is a front view of the transfer device.

FIG. 2 is a side view of the transfer device of FIG.

FIG. 3 is a side view of a transporting apparatus according to a second embodiment of the transporting method for laying a cable of the present invention and an apparatus used therein.

FIG. 4 is a third embodiment of the transfer method for laying cables and the apparatus used in the present invention, and is a front view of the transfer apparatus.

FIG. 5 is an explanatory view showing a conventional cable pull-in method.

FIG. 6 is a perspective view showing an example of an apparatus used in a conventional drawing-in method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cable 2 Guide rail 3 Supporting trolley 4 Connecting tool 5 Magnetic belt 6 Drive mechanism

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-148653 (JP, A) JP-A-54-41086 (JP, A) JP-A-6-67249 (JP, U) 32950 (JP, B2) JP 6-6431 (JP, B2) JP 2-40009 (JP, Y2) (58) Field surveyed (Int. Cl. ⁷ , DB name) B61B 13/00-13 / 12

Claims (3)

(57) [Claims] A plurality of support vehicles (3) movably mounted on an end guide rail (2) installed in the direction of transport of the cable (1) are connected, and these support vehicles (3) are connected. A magnetic belt (5) that can be magnetically attracted to a guide rail is provided on the vehicle, and a cable (1) is supported by a supporting carriage (3) connected to the magnetic belt (5). By rotating the support cart (3) from one end in the longitudinal direction of the guide rail (2) to the other end, the cable (1) is conveyed along the guide rail (2). Transfer method for laying cables. 2. A cable (1) is supported by a plurality of support carts (3) movably mounted on an end guide rail (2) installed in the direction of transport of the cable (1). Of the plurality of support vehicles (3) connected to each other by a connecting tool (4) and a guide rail (2) can be magnetically attracted to some of the plurality of support vehicles (3). A belt (5) is provided, and the magnetic belt (5) is rotated in the longitudinal direction of the guide rail (2), and the support cart (3) is rotated.
Is moved from one end of the guide rail (2) in the longitudinal direction to the other end thereof, and the other support cart (3) is pulled in the same direction to transport the cable (1) along the guide rail (2). A conveying method for laying a cable, characterized by the following. 3. An end guide rail (2) arranged in the direction of transport of the cable (1) is connected to the guide rail (2) so as to be movable along the guide rail (2) and to support the cable (1). A support belt (3), a magnetic belt (5) that can be magnetically attracted to the guide rail (2), and a magnetic belt (5) that is magnetically attracted to the guide rail (2). And a drive mechanism (6) for moving the support cart (3) from one end of the guide rail (2) to the other end by rotating the magnetic belt (5) in the longitudinal direction of the guide rail (2). A transfer device for laying a cable, comprising: