JPH0622368B2 - Cable laying equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus used for laying a cable in a cave, and particularly to laying a cable in a trough arranged in an upper portion of a cable rack. It relates to a device capable of doing.

(Prior Art) Usually, cable racks are arranged on both sides of a cavern for a high-voltage power transmission line, and each cable rack is provided with a plurality of trough support members in the vertical direction. It is designed to accommodate three high-voltage power transmission cables. In the case of the 275KV OF cable, the cable has a weight of about 35kg per 1m and a diameter of 13 ~.
There is about 4 cm.

When installing a cable on a trough support member provided at a low position in a cave as described above, for example, Japanese Patent Publication No.
It is possible to use a work carriage as disclosed in Japanese Patent Publication No. 38885. In the conventional truck, the cable extended on the floor at the center of the cave is guided upward by the roller means provided on the work truck, and the lifted cable is sequentially guided from the end to the trough support member. It is possible to continuously perform the laying work by feeding it to.

However, in the conventional work trolley as described above, when the trough support member on the upper part of the cable rack is provided at a position higher than 2 m, the work floor of the trolley is set at a high position. There is a problem that workability is extremely poor due to reasons such as poor stability.

Therefore, for the upper trough support,
As shown in Japanese Patent No. 15840, there are cases in which a work cart having improved stability is used. The work trolley shown in this conventional example is provided with a means to be guided by a guide rail on the upper part of the trolley, and the traveling wheels are configured to move along a groove provided on the floor of the tunnel. Further, the work table of the truck is provided with a guide means for guiding the cable to the side part so that the work can be easily performed when the cable is moved toward the trough.

(Problems to be Solved by the Invention) However, in the conventional cable laying apparatus as described above, a device such as a trolley needs to be relatively large. Further, under the present circumstances where the cable has a large capacity, the weight per unit length of the cable is large, and it is difficult for a small number of workers to perform the work of moving the cable from the truck to the trough. There is a problem.

On the other hand, if many workers ride on the work trolley or on the trough to carry out the cable laying work, there is a big problem in terms of safety, etc., and work efficiency is not always improved. do not become.

Furthermore, when the work cart as described above is not used,
It is necessary to construct a scaffold at a height corresponding to the upper trough, to extend the cable on the scaffold, and then to use a means for moving the cable onto the trough, which is a very troublesome work. There is a problem of being forced.

(Object of the Invention) The present invention solves the above-mentioned drawbacks of conventionally used apparatuses, and uses relatively simple equipment.
An object of the present invention is to provide a cable laying device that can extend a cable in a cave and easily move it toward a trough to more efficiently perform laying work.

(Means and Actions for Solving Problems) A cable laying device of the present invention is a device for extending a cable at a position corresponding to the height of a shelf of a cable rack in a cave and arranging the cable in a trough. Regarding

In the device of the present invention, a mounting bracket is attached to the middle pillar in the cave according to the height of the shelf, rollers for guiding the cable through the mounting bracket are arranged, and the extension of the cable is arranged. A cable feeding device for performing the above is arranged, and a mounting bracket mounted on the center pillar is provided with a roller support block for supporting the roller and a bracket for supporting the slide rod.

Further, in the apparatus of the present invention, the roller is provided so as to be swingable with respect to the roller support block, and when the cable is moved in the length direction, the roller is fixed and held at a substantially horizontal position to swing the roller. When the cable is moved, the cable is transferred to a slide rod, and one end of the slide rod is supported by a mounting bracket, and the other end is supported by a trough support through an arm. The slide rod is arranged so as to be inclined from the mounting bracket side toward the trough support member side, and when the roller is released from the state of supporting the cable, the cable placed on the slide rod is moved to the slide rod side. It is configured so that it can be moved into the trough by sliding according to the inclination of.

Therefore, in the cable laying device of the present invention, the mounting bracket is arranged at a predetermined height with respect to the center pillars arranged at a predetermined interval in the central portion of the cave, and the cable is guided in the length direction. By providing the roller and the slide rod for moving the cable in the lateral direction, the work of laying the cable can be easily performed.

In addition, when laying a cable, it is possible to move the cable laterally by sliding it on the slide rod by its own weight.
It shall be possible to easily carry out the work of moving the cable onto the trough.

(Example) The structure of the cable laying apparatus of this invention is demonstrated according to the illustrated example.

In the embodiment of the present invention shown in FIG. 1 and FIG. 2, the middle pillars 2 lined up in the central portion in the width direction of the cave, corresponding to the height of the trough 15 for laying a cable, The mounting bracket 30 is attached.

The mounting bracket 30 is mounted in the vertical direction of the center pillar 2 by inserting screws into the screw holes 3 formed at predetermined intervals through the upper and lower pin holes 31 and 31a. Therefore, by changing the mounting position with respect to the screw holes 3, 3, ..., The mounting bracket can be mounted at a position at an arbitrary height of the center pillar 26.

As shown in the figure, a roller support block 35 and a bracket 33 are provided for the mounting bracket 30 mounted on the center pillar 2. The roller support block 3
5 has a groove having an opening formed in the lower part thereof, and two pin holes 36 and 38 are provided for attaching a support arm 41 supporting the roller 40 to the groove.

Of the two pin holes, the pin 37 inserted into one of the fixing pin holes 36 is provided so as to penetrate the end portion of the support arm 41, and the pin 37 for supporting the other arm is provided in the pin hole 38 for supporting the other arm. A pin 39 that supports the lower surface of the arm 41 is mounted.

In the example shown in FIG. 1, a steady wire 43 is attached to the tip of an arm 41 supporting the roller 40 via a wire fixing member 42. The wire 43 prevents the cable having corrugation on its surface from swinging in the vertical and horizontal directions due to the unevenness of the cable when the cable having the corrugation on the surface is moved with respect to the roller 40 supported by the arm in a cantilever manner. It is provided for.

That is, each roller 40 arranged along the center pillar ...
Is connected by using a single wire, even if the cable moves on the roller row and a shock is applied to each roller 40 in the vertical and horizontal directions, all of the adjacent rollers have the same phase. Since no impact is applied, the vibrations of the rollers are canceled by each other, the vibrations of the rollers are reduced, and the generation of noise due to the vibrations of the rollers can be prevented.

The bracket 33 is provided so as to extend laterally from the mounting bracket 30, and when the roller 30 is set at a position for carrying a cable, the slide rod 50 is placed at a position that does not interfere with the roller. Mounted.
The slide bar 50 has a hole 34 formed in the bracket 33.
One end is inserted into the trough support member 12 and the other end is supported by the end of the trough support member 12 via the end support bracket 53 and the L-shaped bent arm 55.

As described above, the arm 55 is attached to the end of the truss support member 12.
In the embodiment of the present invention, in order to attach the above, a substantially U-shaped arm attaching member 56 is combined with the end portion of the trough support member formed by a square pipe, and a means for tightening with a fixing screw 57 is provided. I am using.

Then, as described above, one end of the slide rod 50 is inserted into the hole 34 of the bracket 33, and the vicinity of the other end is supported by the trough support member 12 via the arm 55, whereby the center pillar A slide rod 50 is supported between the two and the trough support material so that the load can be supported when the cable 20 is placed.

Further, the slide rod 50 of the present invention is provided with the middle pillar 2 to the trough 1.
It is inclined so that it descends toward 5, and the inclination angle is set so that the cable can slide under its own weight. Further, the end of the slide rod 50 on the trough 15 side has a large inclination angle as shown in FIG.
It is arranged so as to project above the trough.

The protruding length of the slide rod on the trough can be adjusted according to the position of the cable and the like. The length of the slide rod 50 on the side of the center pillar is inserted into the hole of the bracket 33. It is done by adjusting.

The two members of the slide rod and the roller configured as described above are attached to the central pillar 2 in the sinus 1 as shown in FIG. Then, for example, trough support members 12, 12, ... Are attached to the cable rack 10 arranged on the side portion of the cave 1 via the side pillars 11, and the troughs 15 are attached to the respective trough support members. .. can be used particularly effectively when the cable is laid on the trough provided at the uppermost portion.

In the embodiment shown in FIG. 3, the trough 15 is configured as a closed type disaster prevention trough, and the upper member 1 is connected to the lower member 16 having a substantially U-shape via the connecting portions 17 and 17.
8 is attached, and the inside of the cable is sealed by the upper and lower members 16 and 18 to form a cable housing portion.

The upper and lower members constituting the trough 15 as described above are F
It is composed of RP or iron plate, etc., so that the heat generated from the cable does not leak to the outside, and the failure that occurred outside does not affect other cables. It Further, when three cables are accommodated, a cooling water pipe 23 is arranged above the trough 15 in order to remove heat generated from the cables. Then, by passing low-temperature water through the inside of the pipe 23, the inside of the trough is cooled and the heat of the cable can be prevented from rising.

In the embodiment of the present invention, when a large number of troughs are arranged in a cave, each trough 15 accommodates three cables, and each trough forms a circuit of a high voltage transmission line.

Further, in the cavern of the present invention, a cable feeding device 25 as shown in FIG. 4 can be used to move the cable 20 along the roller arranged at a high position.

The cable feeding device 25 can use a caterpillar type device which is usually used for moving a cable, and the cable feeding device 25 is mounted at the same height as the position of the roller via the mounting bracket 30a.
And the cable 20 is extended from above and below by the caterpillar means so that it can be moved in the length direction of the cable.

The cable feeding device 25 has an interval of about 35 m, as in the case of general cable laying work.
It is placed inside the cave so that the cable can be extended.

In the cable laying device of the present invention configured as described above, when laying a cable in a cave,
The cable 20 is extended along the roller 40 as shown.

Then, after that, the roller 40 is swung to release the holding state with respect to the cable, and the cable 20 is moved to the slide rod 5.
Then, the work is carried out in which it is transferred to 0, slid in the direction of the trough 15 along the slide rod 50, and accommodated in the trough.

In the embodiment shown in FIG. 5, section A shows a state in which the cable is extended, and section B shows a state in which the support state by the roller is released and the cable is supported by the slide rod 50. Section C shows a state in which the cable is housed in the trough.

In the embodiment of the present invention, the work for attaching the mounting bracket to the center pillar and the work for attaching the roller and the slide rod to the mounting bracket are performed by using a work carriage as shown in FIG. The work carriage 5 may be, for example, one shown in Japanese Utility Model Publication No. 60-15840, but in the embodiment of the present invention,
In order to regulate the traveling direction of the truck in the cave, the guide wheel 9 is guided in the side groove 4a provided on the floor 4.

Further, the guide wheel 9 is provided on a support arm 9a protruding to the side portion of the bogie body so that the traveling wheel 8 does not fall into the groove 4a. A workbench 6 is provided on the dolly 5, and an operator rides on the workbench 6 to mount a mounting bracket, a roller and a slide rod, and transfer a cable as described later. Each work can be done.

In the work carriage 5 of the present invention, the upper guide member 7 is provided on the side portion on the side of the center pillar, and the carriage 5 is moved by sliding the guide member 7 on the center pillar. At this time, the carriage can be moved along the work passage in the cave by cooperating with the guide by the side groove 4a.

As shown in FIG. 5, when laying a cable in a cave, a roller is set to a predetermined height over a predetermined section of the cave, for example, in a section of one cable length of 650 m. Then, attach the mounting bracket 30 to each middle pillar 2,
The roller 4 is attached to the block 35 provided on each mounting bracket.
Work to install 0. Further, the cable feeding device 25 is arranged at every predetermined interval so that the feeding operation can be performed without applying an excessive tension to the cable.

Then, the cable feeding device and the winding device are respectively arranged in the manhole portions arranged in each constant section of the cave, and the wire or the like connected to the end portion of the cable is wound by the winding device. At the same time, the cables are extended by the respective cable feeding devices 25 provided in the cave, and the cables are moved along the rollers 40 to perform the cable extension work in the cave.

When all the cables are extended to a predetermined section of the cave, the cables are supported by the rollers. Further, each roller 40 has its support arm end connected by a wire 43, and when the cable moves on the rollers,
It is possible to prevent the support arm from swinging and the generation of noise due to the vibration of the roller.

As described above, when the cable is extended along the roller and the cable is transferred to the trough 15, the mounting bracket 30 and the trough support are supported at regular intervals (for example, a length of about 35 m). The slide rod 50 is attached between the member 12 and the member 12.

Then, the work for swinging the roller is performed at the portion where the slide bar is provided. The rocking of the roller is performed by the support pin 39 from the roller mounting block shown in FIG.
Is done by pulling out.

That is, the pin 37 is attached to the block 3 of the mounting bracket 30.
5, while supporting the end portion of the support arm 41,
When the support pin 39 is pulled out, the roller 40 swings downward around the pin 37 and is released from the state of supporting the cable 20.

The cable 20 is supported only on the slide rod 50, and the inclination of the slide rod causes
The cable is slid by its own weight and moved toward the trough. As described above, when the support arm 41 that supports the roller 40 is swung, the wire to which the tip of the support arm is connected is connected with a slight margin, There is no obstacle to the swing of the arm.

As described above, when the swinging motion of the roller is performed over the entire section B, the cable 20 is moved from the position close to the section C, following the section C in which the cable is housed in the trough 15. The slide bar 50 is successively slid on the slide bar 50 to slide in the trough direction. When sliding the cable, the worker can fix the cable at an arbitrary position in the trough 15 by only performing an auxiliary work for positioning the cable at a predetermined position in the trough.

Then, in the portion of the predetermined section B, the cable is slid along the slide rod toward the trough 15, and when the transfer work is completed, the slide rod 50 is removed from the section B and the next section A Then, in the section A, the work of mounting the slide bar at the position corresponding to each roller is performed.

As described above, in the state of dividing into predetermined sections,
The operation of moving the cable from the roller through the slide rod to be housed in the trough is repeated, and the cable is laid in the cave over a predetermined length of the cable.

Further, in the embodiment of the present invention, by performing the work of mounting the slide rod in a state of being divided into relatively short sections, the problem of the number of workers, the problem of the number of slide rods installed at the same time, etc. Be able to correspond.
Then, by performing the work of moving the cable toward the trough in correspondence with the section of the short cable feeding device, it is possible to reduce the number of workers who simultaneously enter the cave, and at the same time, a member such as a slide rod. Can reduce the amount of use.

Furthermore, by carrying out the work of moving the cable only in a relatively short section, it becomes possible to easily handle an OF cable or the like having a large weight per unit length.

In addition, when moving the cable along the slide bar,
When the pinching state of the cable feeding device 25 with respect to the cable of the caterpillar device is released, the cable is easily separated from the cable feeding device and moved toward the trough. The above-mentioned cable laying work is carried out when three cables are to be accommodated in the trough.
The operation is repeated three times, and every time the cable is laid, the operation of attaching and detaching the slide rod is repeated every short section.

Further, as described above, when the work of laying the cable in the cave is completed in the section corresponding to one cable, the bracket and the roller device attached to the center pillar are all removed. Then, corresponding to the next section, the roller is attached to the middle pillar via the bracket, the cable is extended, and the roller is accommodated in the trough.

In the embodiment of the present invention, the case where the OF cable is laid in the trough has been described, but the device of the present invention can be applied to other types of high voltage power transmission cables such as a CV cable. .

(Effects of the Invention) Since the device of the present invention has the above-described structure, a cable with a large unit weight can be installed at a predetermined height position in a cave by using a member having a relatively simple structure. It can be laid on the trough located at.

Therefore, in the cable laying device of the present invention, the mounting bracket is arranged at a predetermined height with respect to the center pillars arranged at a predetermined interval in the central portion of the cave, and the cable is guided in the length direction. By providing the roller and the slide rod for moving the cable in the lateral direction, the work of laying the cable can be easily performed.

In addition, when laying a cable, it is possible to move the cable laterally by sliding it on the slide rod by its own weight.
The work of moving the cable onto the trough can be facilitated.

[Brief description of drawings]

FIG. 1 is a perspective view showing the configuration of the device of the present invention, FIG. 2 is a side view thereof, FIG. 3 is an explanatory view showing the relationship between a cable laying device arranged in a cave and a trough, and FIG. It is explanatory drawing at the time of attaching a cable sending-out device to a center pillar,
The figure is an explanatory view showing the operation of laying the cable of the present invention. Reference numerals in the figure 1 ... Cave road, 2 ... Nakamichi, 4 ... Floor, 5 ... Work trolley,
10 ... Cable rack, 11 ... Side pillar, 12 ... Trough support member, 15 ... Trough, 20 ... Cable, 23
...... Cooling water pipe, 25 …… Cable feeding device,
30 ... Mounting bracket, 31 ... Pin hole, 33 ...
Slide rod support bracket, 34 ... Hole, 35 ... Roller support block, 40 ... Roller, 41 ... Support arm, 43 ... Wire, 50 ... Slide rod, 55 ... Arm, 56 ... Arm mounting member .

Claims (1)

[Claims] Claim: What is claimed is: 1. A device for extending a cable at a position corresponding to the height of a shelf of a cable rack in a cave and storing it in a trough, wherein the height of the shelf with respect to the middle pillar in the cave. The mounting bracket, the roller for guiding the cable through the mounting bracket is arranged, and the cable sending device for extending the cable is arranged, and the mounting bracket is mounted on the center pillar. The mounting bracket is provided with a roller support block for supporting the roller and a bracket for supporting the slide rod. The roller is provided so as to be swingable with respect to the roller support block, and the cable is provided in the length direction. When moving, the cable is fixedly held in a substantially horizontal position, and the cable is transferred to the slide rod by swinging the roller. The rod is configured such that one end is supported by the mounting bracket and the other end is supported by the trough support through the arm, and the slide rod is tilted from the mounting bracket side toward the trough support. When the roller is released from the support state for the cable, the cable placed on the slide rod is slid according to the inclination of the slide rod so that the cable can be moved into the trough. A cable laying device characterized by the above.