JP3510871B2 - Bonding method of support for supporting optical fiber cable storage tube in small diameter pipeline - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-diameter pipe line that cannot be entered by humans, in which a large number of supports for supporting an optical fiber cable storage pipe are preliminarily coated with an adhesive and the inside of the pipe line is robotically operated. A method for adhering a support for supporting an optical fiber cable storage tube by an adhesive that can be surely adhered by simply pressing these supports against the inner wall surface of the pipe, which is an object to be adhered, while moving. Is.

[0002]

2. Description of the Related Art Adhesives are used to bond objects to each other in various places in society, and many kinds are manufactured and sold depending on the objects to be bonded and the curing time. For example, even in construction sites, adhesive work using adhesives is being carried out in various situations, but of the sewer pipelines buried underground, there are small diameter pipelines that workers cannot enter. In order to lay a storage pipe containing an optical fiber cable on an inner wall by using a work robot, a work of fixing a large number of supporting tools for supporting the storage pipe is performed. In this work, an adhesive is applied in advance to a plurality of supporting tools to be bonded, and while moving the small-diameter conduit by a certain distance, the supporting work is simply pressed against the inner wall surface of the conduit to perform the bonding work. In such cases, it was difficult to decide how much curing time the adhesive should be used.

That is, in such an adhering operation performed while moving a certain distance, the curing time of the adhesive depends on the time for applying the adhesive to the object to be adhered, the time for conveying the object to the adhering work place, and the application of the adhesive. It is generally determined by the pressing time between the attached object and the object to be bonded.

[0004]

However, when a large number of bonding operations are performed while moving such a fixed distance, a short-time curing adhesive (which means an adhesive that cures in a few seconds to about 60 seconds) is used. If used, the pre-applied adhesive will harden before reaching the final bonding site. On the other hand, when a long-time curing adhesive (which means an adhesive that cures in about 0.5 hours to about 2 hours) is used, it takes a long time to cure the adhesive at the first bonding work site, resulting in poor work efficiency. As described above, inconvenience arises regardless of the position of the curing time, and in the case where a large number of bonding operations are performed while moving a certain distance, much labor and time are required.

Therefore, in view of these points, the present invention provides a work robot in which a large number of supporting members for supporting the storage pipes are fixed to the inner wall of a small-diameter pipe line which an operator cannot enter. Even if there is, there is provided an adhesive method for surely adhering the support tool to the inner wall surface of the small diameter passage by using two kinds of adhesives having different curing times or by shifting the curing time of the adhesives. .

[0006]

According to a first aspect of the present invention, of the sewer pipelines buried in the ground, an optical fiber cable is stored in the inner wall of a small-diameter pipeline in which a worker cannot enter. In order to lay a pipe, in bonding a large number of supports that support the storage pipe using a working robot, a long-time curing adhesive is applied to the entire bonding surface of the support, and a part of the surface is applied. Place a short-cure adhesive,
The work robot holding the support is advanced in a small-diameter conduit, and the work robot presses the adhesive surface of the support against the inner wall surface of the small-diameter conduit to first cure for the short time. A method of adhering a support for supporting an optical fiber cable storage pipe in a small-diameter conduit, in which the support and the inner wall surface of the small-diameter conduit are adhered in a short time by an adhesive, and then further adhered by the long-term curing adhesive. did.

The invention of claim 2 is for laying a storage pipe containing an optical fiber cable on the inner wall of a small-diameter pipe line of a sewerage line buried in the ground where an operator cannot enter. In the bonding of a large number of supporting tools that support the storage tube using a work robot, a long-time curing adhesive is applied to the entire bonding surface of the supporting tool, and a constant pressure is applied to a part of the surface. A short-time hardening adhesive filled in a small container made of a substance that breaks is placed, and the work robot holding the support is advanced in a small-diameter conduit, and the work robot causes the support to move. The adhesive surface of the above is pressed against the inner wall surface of the small-diameter pipeline, and the small container is damaged by this pressing, and the curable adhesive flows out for a short time to bond the support and the inner wall surface of the small-diameter pipeline in a short time. And then the above long-term curing adhesion Further bonded by, and the bonding method of the support for supporting the optical fiber cable storage tube small-diameter pipe.

The invention according to claim 3 is characterized in that a curing accelerator for a long-time curing adhesive is used in place of the short-time curing adhesive, and the small diameter according to claim 1 or 2 is used. The method for adhering a support tool for supporting the optical fiber cable storage tube in the pipeline was used.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings. In this embodiment, as shown in FIG. 6, an optical fiber cable (hereinafter referred to as an “optical cable”) is provided on the inner wall of the small-diameter pipeline A, which is out of the pipelines of the sewerage system and which operators cannot enter. In order to lay a storage tube B storing therein), a case where a support tool 1 for supporting the storage tube B is fixed at a constant interval by using a work robot will be described.

As shown in FIG. 1, this support 1 is a flat bar-shaped permanent magnet 1a which is curved to have substantially the same shape as the shape of the inner wall of the pipe to be mounted. The cover 1b made of iron is covered and fixed. A large number of the supporting tools 1 are fixed to the upper portion or side portions of the inner wall of the conduit A at regular intervals, and the supporting tools 1 are attached to the storage pipe B to be laid.
It is laid on the inner wall of the conduit A with a ferromagnetic material (not shown) attached in advance at approximately the same interval.

Next, a method of fixing the support 1 to the inner wall of the conduit A will be described. First, the long-time curing adhesive 2 is uniformly applied to the entire curved flat surface of the support 1 on the cover side. After that, three glass spherical bodies 3a filled with the short-time curing adhesive 3 are arranged at regular intervals on the surface coated with the long-time curing adhesive 2. The three spherical bodies 3a thus arranged are substantially fixed so as not to separate or move due to the viscosity of the applied long-time curing adhesive 2.

It is a working robot C as shown in FIG. 2 that fixes such a support 1 to the inner wall of the conduit A. This working robot C comprises a rectangular flat plate carriage 5 provided with wheels 4 at front and rear left and right ends so as to be movable, and has a substantially constant thickness shown in FIGS. 2 and 3 at the center of the upper surface of the carriage 5. T
The fixtures 6 of the support 1 having a character shape are provided by being fitted into the carriage 5 in a state where five fixtures 6 of the support 1 are arranged upright.

The head 6a of the fixture 6 has a substantially semicircular shape with a curved upper edge, and the upper end surface forming the upper edge has a
A recess having substantially the same shape and size as the support tool 1 is provided (not shown), and the curved support tool 1 is fitted and held in the recess, and as shown in FIGS. 3 and 4, The fixture 6 can be expanded and contracted in the vertical direction by a hydraulic jack, and can be freely rotated in the left and right direction by a rotary shaft 6b that is rotatably supported in the lower part, and these operations can be performed by remote control. Further, a TV camera 7 is provided in front of and behind this dolly.

Long-curing adhesive 2 and short-curing adhesive 3
In order to fix the inner wall of the pipe A of the support 1 to which the coating is applied, the working robot C that has advanced in the pipe A is stopped at the position where the support 1 is attached to the inner wall of the pipe A, and the working robot C
The head portion 6a of the mounting tool 6 is extended toward the mounting position of the supporting tool 1 and pressed against the inner wall of the conduit A as it is. As shown in FIG. 5, due to this pressing, the glass spherical body 3a arranged on the surface of the long-time curing adhesive 2 applied to the flat surface of the support 1 on the cover 1b side is damaged and filled inside. The short-time curing adhesive 3 thus produced flows out to the outside, and the support 1 is partially and instantaneously fixed to the inner wall of the conduit A. After this, the support 1 is securely and firmly fixed to the inner wall of the conduit A by the long-time curing adhesive 2. In this way, the support tools 1 are sequentially arranged at the regular intervals at the conduit A.
Attach it to the inner wall.

Instead of the glass spherical body 3a, a small vinyl bag-like body may be used (not shown). In this case, when pressed by the attachment 6 of the work robot C, the vinyl bag-like body ruptures, the short-time curing adhesive 3 filled inside flows out, and the support 1 is piped. It is partially and instantaneously fixed to the inner wall of the road A. Further, instead of using the short-time curing adhesive 3, the curing accelerator of the long-time curing adhesive 2 may be used (not shown). In this case, the filled glass spherical body 3a or the like is damaged, and the curing accelerator that has flowed out to the outside cures the contacted long-time curing adhesive instantly, and has the same effect as the short-time curing adhesive 3. Play.

Further, the short-time curing adhesive 3 is not filled in a small container such as a glass spherical body 3a or a small vinyl bag-like body, but is applied to the surface of the long-time curing adhesive 2 applied. In some cases, it may be partially applied as it is. In this case, the short-time curable adhesive 3 is not one which is instantaneously cured as described above, but one which has a fixed time but is a short time is used.

In the embodiment described above, the present invention is explained by the support tool 1 for laying the storage pipe B in the small-diameter pipe line A of the sewer which the worker cannot enter. The present invention is not limited to this embodiment, but can be applied to all cases in which objects are bonded to each other and members are bonded to each other. Further, as the small container that is damaged when a constant pressure for filling the short-time curing adhesive 3 is applied, the spherical body 3a made of glass or the bag-shaped body made of vinyl is used. The number is not limited, and the number and arrangement of the elements are not limited to those in this embodiment. Further, although the bonding work by the machine has been described, the worker may of course perform the bonding work.

[0018]

According to the first and second aspects of the present invention, two kinds of adhesives having different curing times, that is, a long-time curing adhesive and a short-time curing adhesive, are used. According to the third aspect of the invention, since the curing time of the long-curing adhesive is shifted by using the long-curing adhesive and the curing accelerator of the long-curing adhesive, the supporting tool to be bonded has a small diameter. When pressed against the inner wall surface of the road, the short-time curing adhesive or the long-time curing adhesive that has come into contact with the curing accelerator cures in a short time and partially adheres them, and then adheres with the long-time curing adhesive. Since the entire surface is securely and firmly adhered, the adhesive is applied to a large number of supports in advance, and the support robot simply moves the supports with this small diameter while moving in the small-diameter pipeline. Even when pressing against the inner wall surface of the pipeline to perform bonding work Very efficiently, and reliably firmly bonding operation is carried out, it is possible.

According to the second aspect of the present invention, the short-time curing adhesive which is temporarily adhered first is filled in a small container made of a substance that is damaged when a constant pressure is applied. Thus, the short-time curing adhesive can be held, and the pressure-sensitive adhesive will be damaged, so that the effect of the short-time curing adhesive can be surely exhibited. Further, in the invention of claim 3, since the curing accelerator of the long-time curing adhesive is partially used instead of the short-time curing adhesive, it is necessary to purposely prepare two kinds of adhesives having different effect times. Since it does not exist, it is convenient and versatile.

[Brief description of drawings]

FIG. 1 is a plan view of a support device according to an embodiment of the present invention, in which a long-time curing adhesive is applied to a flat surface on a cover side, and a glass spherical body filled with a short-time curing adhesive is arranged on the surface thereof. It is a perspective view showing a state.

FIG. 2 is a perspective view showing a work robot according to an embodiment of the present invention.

FIG. 3 is a perspective view showing an attachment of a work robot according to the embodiment of the present invention.

FIG. 4 is a perspective view showing a state in which the attachment of the work robot according to the embodiment of the present invention is attached with the support.

FIG. 5 is a perspective view showing a state in which the spherical body is damaged on the support pressed against the inner wall of the conduit and the curable adhesive flows out for a short time in the embodiment of the present invention.

FIG. 6 is a perspective view showing a state in which an optical fiber cable is laid by attaching a support tool to a pipeline of sewerage buried in the ground according to an embodiment of the present invention.

[Explanation of symbols]

1 Supporting Tool 2 Long-Time Curing Adhesive 3 Short-Time Curing Adhesive 3a Glass Spherical Body

Front page continuation (51) Int.Cl. ⁷ identification code FI H02G 3/30 H02G 9/00 C 9/00 3/26 L (58) Fields investigated (Int.Cl. ⁷ , DB name) C09J 5 / 04 B29C 65/52-65/54 C09J 201/00-201/02 H02G 1/06 305-1/10 H02G 3/30-3/34 H02G 9/00-9/12

Claims (3)

(57) [Claims] 1. A storage pipe for storing an optical fiber cable is laid on the inner wall of a pipe of a small diameter out of the pipelines of sewers buried in the ground, which a worker cannot enter. In the adhesion of a large number of supporting tools to support using a working robot, a long-time curing adhesive is applied to the entire bonding surface of the supporting tool,
A short-time curing adhesive is placed on a part of the surface, and the working robot holding the supporting tool is advanced in a small-diameter pipeline, and the working robot causes the bonding surface of the supporting tool to have a small diameter. The inner wall surface of the support and the inner wall of the small-diameter pipeline are first bonded in a short time by the short-time curing adhesive, and then further bonded by the long-time curing adhesive. A method for adhering a supporting tool for supporting an optical fiber cable storage pipe in a small-diameter conduit. 2. A storage pipe for storing an optical fiber cable is laid on the inner wall of a pipe of a small diameter out of the pipelines of sewers buried in the ground where workers cannot enter. In the adhesion of a large number of supporting tools to support using a working robot, a long-time curing adhesive is applied to the entire bonding surface of the supporting tool,
A short-time hardening adhesive filled in a small container made of a substance that is damaged when a certain pressure is applied is placed on a part of its surface, and the working robot holding the support is placed in a small-diameter conduit. By advancing, the working robot presses the bonding surface of the supporting tool against the inner wall surface of the small-diameter conduit, the pressing damages the small container, and the curable adhesive flows out for a short time, and the supporting tool and Glue the inner wall surface of a small diameter pipe in a short time,
After that, further adhering with the above-mentioned long-time curing adhesive, a method of adhering a support tool for supporting an optical fiber cable storage pipe in a small diameter conduit. 3. An optical fiber cable in a small-diameter conduit according to claim 1, wherein a curing accelerator for a long-time curing adhesive is used in place of the short-time curing adhesive. A method for adhering a support tool that supports a storage tube.