JP2002051419A - Device for processing excess cable length - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for processing an excessive cable length that performs the processing of the excess cable length mechanically and speedily, even if the excess cable length varies. SOLUTION: This device is provided with an excess length take-up roller 1 with which the excess length of a cable to be extended engages substantially into a U-shape, a slide part 2 that is fixed on the roller 1, an inclined guide part 3 that drives the slide part 2 to cause the roller to be guided in the downward direction of the inclination due to its own weight, and supporting pillars that support the guide part 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable surplus length processing device for processing a surplus length of a cable generated when a cable is extended.

[0002]

2. Description of the Related Art In recent years, the need for large-capacity data communication on the Internet and the like has been increasing. Therefore, in order to improve communication lines, optical fiber cables and metal cables capable of transmitting a large amount of data and the like (hereinafter, simply referred to as cables) are being laid. As one form of the laying of these cables, there is a case where the cable is extended while being passed through a conduit buried underground using a cable feeder. In order to smoothly send a long cable into a pipeline, it is necessary to provide a traction force / feeding force by arranging a relay cable feeder in each of a plurality of handholes or manholes (hereinafter referred to as connection pits).

[0003] In this case, since the cable feeder is large and heavy, arranging the cable feeder in the connection well deteriorates work efficiency. Therefore, as shown in FIG. 5, the cable feeder 110 is disposed outside, and the cable 130 pulled in the pipe 120 is once brought out to the ground via the connection shaft 140, and the traction / feeding force is sent by the cable feeder 110. , And again sent to the underground pipeline 150 via the connection resistor 140 and extended.

In this case, since a cable (especially an optical fiber cable) 130 is weak in bending, the cable 13
0 is wrapped around the guide roller 160 to draw out a cable having a sufficient length (hereinafter, simply referred to as a surplus length of the cable), and a worker (only one worker is shown in FIG. 5. Requires two or three workers), the direction of movement is changed and returned to the underground conduit 150 while maintaining a large radius of curvature by extra length processing performed by the operator. In addition, connection resistance 1
In order to avoid the situation where sand, stones and the like enter the 40, the curing sheet 170 covers the vicinity of the exit of the connecting member 140 and is cured.

The reason for arranging a plurality of cable feeders in necessary places among a plurality of connection shafts is that a pipe buried for underground extension is not necessarily linear due to terrain and existing facilities. Due to the fact that it is not a pipeline, and that the inside of the pipeline is slippery due to the ingress of sediment, etc., there is a large resistance to passing cables, and it is necessary to use multiple cable feeders to provide large traction. Because there is. At this time, although not shown, a lubricant is applied to the cable to improve the slip.

[0006]

In the cable feeding operation as described above, it is only necessary that a plurality of cable feeding devices cooperate and feed at a predetermined speed in synchronization with each other. Depending on the shape and the degree of sedimentation in the pipeline, slippage of a certain pipeline may be poor, and slippage of a certain pipeline may be good.As a result, extra cable length is drawn out. Or the cable was pulled out less (hereinafter, these are referred to as expansion and contraction of the extra length of the cable).

[0007] However, in the process of expanding and contracting the extra length, as shown in Fig. 5, the cable is cured on the ground using the curing sheet 170 so as not to damage the cable, and two or three workers are further arranged. If the surplus length is smaller than the standard, a work is performed by radio communication or the like to change the cable feed speed or the like to adjust the surplus length. Conventionally, when the extra length of these cables expands or contracts, quick processing cannot be performed, and a situation in which cable extension work is temporarily stopped has occurred. In addition, there is a possibility that an operator may erroneously bend the cable beyond a predetermined radius of curvature in the process when the extra length of the cable expands and contracts, thereby damaging the cable.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a cable extra length processing device that mechanically promptly processes even if the extra cable length is expanded or contracted. Is to do.

[0009]

In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that an extra length accommodation roller in which an extra length of a cable to be extended is stretched in a substantially horizontal U-shape; A slide portion fixed to the long storage roller, and an inclined guide portion that guides the excess length storage roller downward by its own weight by following the slide portion, and in normal times, own weight of the excess length storage roller and the slide portion. , The extra length of the cable is stretched in a substantially horizontal U-shape, and when the extra length of the cable expands or contracts during the extension, the slide portion moves along the inclined guide portion to extend the extra length of the cable to approximately the horizontal U shape. It is characterized by being stretched in the shape of a letter.

According to a second aspect of the present invention, in the cable extra-length processing apparatus according to the first aspect, the extra-length receiving roller is formed by a plurality of rotating wheels rotatably supported in a circle. It is characterized by being performed.

According to a third aspect of the present invention, in the cable extra length processing apparatus according to the second aspect, the plurality of wheels that are rotatably supported by the extra length storing roller are cylindrical peripheral surfaces. A curved concave surface having a radius of curvature larger than the diameter of the cable is provided, and the cable to be bridged is maintained within the curved concave surface to prevent the cable from being derailed.

[0012] The invention described in claim 4 is the first invention.
4. The cable excess length processing device according to claim 3, wherein an upper stop switch and a lower stop switch provided on the inclined guide portion for detecting the presence or absence of the excess length storage roller, and the upper stop. 5. A controller that receives a detection signal of the switch or the lower stop switch and performs a determination process, and the upper stop switch or the lower stop switch detects the presence of the extra length accommodation roller, and the extra length of the cable. Is determined to deviate from the range from the lower limit to the upper limit.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a description will be given of a cable surplus length processing apparatus according to an embodiment of the present invention. FIG. 1 is an explanatory diagram of a cable feeding system including a cable extra length processing device of the present embodiment, FIG. 2 is an overall configuration diagram of the cable extra length processing device of the present embodiment, and FIGS. FIG. Note that, in FIG. 3, illustration of the depths of the slide portion 2 and the inclined guide portion 3 is partially omitted to make the drawing easy to see. Hereinafter, description will be made with reference to FIGS.

First, an overall system including the cable surplus length processing device 100 will be described. As shown in FIG. 1, in the overall system including the extra cable length processing device 100, the cable 10 is extended along a plurality of directions of arrow A, and is connected to a pipeline 20 buried underground. Connection shaft 30
Pulled out to the ground via.

Then, after passing through a path of a cable feeder 40 and a guide roller 50, the cable extra length processing device 10
0 is introduced. After the surplus length processing described later is performed in the cable surplus length processing device 100, the cable 10 is fed into the pipeline 70 via the cable feeding roller 60 and the connection shaft 30. Here, after a lubricant application operation (not shown) is performed to smooth the slip of the cable 10 in the pipe 70, the cable 10 is sent to the pipe 70. The cable feeder 40 and the guide roller 50 are attached to the storage rack 80.

Subsequently, the cable surplus length processing device 100
Will be described. First, the cable extra length processing device 100
Will be described. Cable extra length processing device 100
As shown in FIG. 2 to FIG. 4, the device includes an extra length storage roller 1, a slide portion 2, an inclined guide portion 3, a support column 4, an upper stop switch 5, and a lower stop switch 6.

Next, the configuration of each part and the movement of the cable will be described. As shown in FIGS. 3 and 4, the extra-length storage roller 1 includes a plurality of rotating wheels 1 a rotatably supported in a circle, and is sandwiched between two frames 1 b of a semicircular disk. The wheel 1a is rotatably mounted. As shown in FIG. 3, the wheel 1a has a substantially drum-like shape in which a curved concave surface having a radius of curvature larger than the diameter of the cable 10 is provided on the peripheral surface of the cylinder. The cable 10 comes into contact with these wheels 1a as shown in FIGS.
As shown in FIG. 2, it is stretched in a substantially horizontal U-shape.

As shown in FIGS. 3 and 4, the slide portion 2 is fixed to both side surfaces of the extra length storage roller 1, and has a prism shape in the present embodiment. The inclined guide portion 3 is made of two equilateral angle irons so that the two slide portions 2 on both sides of the extra length storage roller 1 abut. The two inclined guide sections 3 of equilateral angle iron receive the slide section 2 so that the slide section 2 moves in the inclined direction. The inclined guide portion 3 has a sliding member 3a such as a long-sided plate-shaped Duracon (registered trademark) (formally, polyacetal: POM, but a common name is used in this specification).
Is fixed, so that the contact resistance force is reduced even when the slide portion 2 comes into contact with the sliding member 3a, and is guided in the inclined downward direction along the inclined guide portion 3 by the own weight of the extra length storage roller 1. .

As shown in FIG. 2, an upper stop switch 5 and a lower stop switch 6 are arranged on the inclined guide portion 3. The upper stop switch 5 and the lower stop switch 6 detect the presence or absence of the extra-length storage roller 1 that moves. When the extra length storage roller 1 is detected, the upper stop switch 5 and the lower stop switch 6 output a stop signal, and a controller (not shown) performs various controls. The details of the control will be described later.

Next, the extra length processing of the cable will be described. In a normal state where the extra length of the cable 10 is not expanded or contracted during the cable extension work, the extra length of the cable 10 maintains the state of the solid line in FIGS. In this case, the extra-length storage roller 1 and the slide portion 2 try to move in the downward inclined direction along the inclined guide portion 3 due to their own weight, but the movement is restricted by the cable 10. In this case, the state where the extra length of the cable 10 is stretched in a substantially horizontal U-shape is maintained.

Further, when the extra length of the cable is increased during the cable extension work, the extra length of the cable 10 shifts from the state of the solid line in FIG. 1 to the state of the dotted line in the direction of the arrow B. In this case, even if the cable 10 is extended and moved, the extra length of the cable 10 is substantially U-shaped because the extra length storage roller 1 and the slide portion 2 move in the inclined downward direction along the inclined guide portion 3 by the own weight. Maintain the stretched state. If the extra length is extended and the lower stop switch 6 outputs a stop signal on the assumption that the extra length storage roller 1 is present, a controller (not shown) detects the stop signal and stops the feed operation of the cable feeder 40. Then, a warning / alarm is issued audibly by a sound from a speaker, and a warning / warning is visually generated by a display panel, a rotating light, or the like.

Also, during the cable extension work, the cable 1
When the extra length of 0 is reduced, the extra length of the cable 10 shifts from the state of the solid line in FIG.
In this case, even if the cable 10 moves, the extra length of the cable 10 is set to be substantially horizontal U because the cable 10 moves inclining upward along the inclined guide portion 3 while resisting the own weight of the extra length storage roller 1 and the slide portion 2. Maintain the state stretched in the shape of a letter. If the excess length is reduced and the upper stop switch 5 outputs a stop signal on the assumption that the excess length storage roller 1 is present, a control device (not shown) detects the stop signal and stops the feeding operation of the cable feeding device 40. Then, a warning / warning is issued audibly by a sound from a speaker, and a warning / warning is issued visually by a display panel / rotating light.

In this embodiment, the extra length storage roller 1 is used.
The shape of the frame 1b is a semi-circular half-circle,
The frame is not limited to the half-moon shape, and may be a circular frame having a notch of a full circle, a sector, or a sector. The shape of the frame shape 1b may be any shape that allows the wheel to be disposed so as not to bend beyond the radius of curvature of the cable, and such a shape can be appropriately selected.

Although the slide portion has been described as having a prismatic shape, the present invention is not limited to the prismatic shape, and a plate-like member or a member having an elliptical cross section can be used. In addition, the rollers can be arranged in a prismatic shape to facilitate movement.

Further, in the present embodiment, the inclined guide portion is described as being an equilateral angle steel, but the present invention is not limited to the equilateral angle steel, and a light channel steel having a U-shaped cross section can be appropriately selected. In order to guide the slide portion downward in the inclined direction, the inclined guide portion has a receiving portion on the lower side, and the slide portion is positioned in the direction shown in FIG.
It is sufficient that the movement in the X direction is restricted, and these are also appropriately selected.

Further, in this embodiment, the supporting column is described as an L-shaped angle, but it is needless to say that the supporting column is not limited to the angle, but a column or a prism may be used. It may be good. Various shapes can be appropriately selected as long as the shape supports the inclined guide portion.

[0027]

As described above, according to the present invention, it is possible to provide a cable extra length processing device that mechanically promptly processes even if the extra cable length is expanded or contracted.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a cable feed system including a cable extra length processing device.

FIG. 2 is an overall configuration diagram of a cable extra length processing device according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram illustrating each configuration of a cable surplus length processing device according to an embodiment of the present invention.

FIG. 4 is an explanatory diagram illustrating each configuration of a cable extra length processing device according to the embodiment of the present invention.

FIG. 5 is an explanatory view illustrating a conventional cable laying method.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 extra length processing roller 1 a wheel wheel 1 b frame 2 slide section 3 inclined guide section 3 a sliding material 4 support column 5 upper stop switch 6 lower stop switch 10 cable 20 conduit 30 connection pit 40 cable feeder 50 guide roller 60 cable feed Roller 70 Pipeline 80 Storage rack 100 Cable extra length processing device

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H02G 1/08 H02G 9/06 Z 9/06 G02B 6/00 351 (72) Inventor Katsumi Kitajima Nagoya, Aichi Pref. 3-1-2, Chiten, Minato-ku, Tokyo TOENEC CORPORATION Annex Building (72) Inventor Taketoshi Hatanaka 1-2-2, Oshima, Koto-ku, Tokyo Japan Shoden Co., Ltd. (72) Inventor Shinichi Mimura Koto-ku, Tokyo 1-23 Oshima F-term (reference) 2H038 CA34 CA68 3F110 BA02 DA09 DB11 5G369 AA19 BA01 BA04 BA06 EA01 EA02

Claims (4)

[Claims] An extra length accommodation roller in which an extra length of a cable to be extended is stretched in a substantially horizontal U-shape, a slide portion fixed to the extra length accommodation roller, and an extra length accommodation by moving the slide portion. And an inclined guide portion in which the roller is guided in an inclined downward direction by its own weight. The cable extra length processing device characterized in that, when the extra length of the cable extends or contracts, the slide portion moves along the inclined guide portion and stretches the extra length of the cable in a substantially horizontal U-shape. 2. The cable extra-length processing device according to claim 1, wherein the extra-length receiving roller includes a plurality of rotating wheels rotatably supported in a circle. Extra length processing device. 3. The cable surplus length processing device according to claim 2, wherein the plurality of wheels that are rotatably supported by the extra length accommodating roller have a curvature larger than the diameter of the cable on the peripheral surface of the cylinder. A cable surplus length processing device having a substantially drum-like shape provided with a curved concave surface having a radius, wherein a cable to be bridged is maintained within the curved concave surface to prevent cable derailment. 4. The cable extra length processing device according to claim 1, wherein an upper stop switch provided on the inclined guide portion for detecting the presence or absence of the extra length accommodation roller, and A lower stop switch, and a controller that receives a detection signal of the upper stop switch or the lower stop switch and performs a determination process, wherein the upper stop switch or the lower stop switch detects that the extra length storage roller is present. A cable surplus length processing device that determines that the surplus length of the cable deviates from a range from a lower limit to an upper limit.