JP2020178397A - Pipeline material attachment device for embedded cable way facility - Google Patents

Abstract

To simply and assuredly perform the work for drawing and connecting a cable from an embedded cable way facility to a consumer house, and shorten the connecting work.SOLUTION: A pipeline material P for housing and protecting a cable C to be drawn and wired from a knockout N that is formed so as to be open in a side wall of an embedded cable way facility M, is attached to the embedded cable way facility M. To this end, an attachment device includes a box-shaped coupling body 2 that closes the knockout N from the inside of the embedded cable way facility M, and locks and couples with the pipeline material P disposed inside the knockout N and inclined at a prescribed angle with respect to the embedded cable way facility M, a fixing band 10 that fixes the pipeline material P to the coupling body 2, and connecting means 15 that connects a support plate 13, which is hung from the outside of the embedded cable way facility M to the knockout N, to the coupling body 2 such that the side wall of the embedded cable way facility M is held from the inside and the outside by means of the coupling body 2 and the support plate 13. The coupling body 2 has an inclining and coupling part 4 that inclines the pipeline material P at a prescribed angle with respect to the embedded cable way facility M so as to be coupled with the pipeline material P.SELECTED DRAWING: Figure 1

Description

According to the present invention, for example, in various buried electric line facilities buried in the ground due to the maintenance of utility pole-free, when carrying out the work of pulling various cables, etc. from a hand hole, a cable trough, etc. to a customer, from the cable trough, etc. The present invention relates to an attachment device for a pipeline material of a buried electric wire facility, which enables easy and reliable construction of the lead-in connection work and shortens the connection work.

Conventionally, infrastructure development has been promoted to eliminate utility poles by wiring various cables with pipeline materials buried underground. When the cable is buried, for example, a hand hole, a cable trough, or the like is arranged at the lead-in portion to the consumer, and a lead-in cable connecting to the consumer is connected through the side wall of the cable trough or the like. To connect and pull out the lead-in cable, a knockout for pulling out and a sleeve hole are formed in the side wall of the cable trough, etc., and the lead-in cable is inserted into the knockout, etc., to cover the knockout, etc. The materials are connected, and the gap between the materials and the knockout is fixed by filling with mortar or the like. However, when backfilling after the connection work, a certain waiting time is required for solidification and curing of the filler such as mortar, so it is necessary to process in a short time even including the excavation work, for example, in a shopping district. It is extremely inconvenient in places where working hours at night are restricted.

From this point of view, for example, a pipe material connector shown in Patent Document 1 or a protective tube attachment shown in Patent Document 2 has been proposed. The pipe material connector of Patent Document 1 uses a bell mouth that is inserted into the pipe end of the corrugated pipe material to be connected from the inside of the hand hole and a rotary lock body that tightens a socket attached to the outside of the corrugated pipe material. Suppose that it is fixed to the through hole. The fitting of Patent Document 2 is arranged in an opening formed in a side wall of an electric wire accommodating facility such as a cable trough, and this fitting is a chevron box-shaped first that protrudes outward so as to be arranged in the opening. A mounting hole for connecting a protective tube is formed in one plate portion, and a locking plate portion which is a first locking portion for locking to an opening edge inside an electric wire accommodating facility is provided on both sides of the first plate portion. A holding portion that is a screw-shaped second locking portion that is provided on both sides and is pressed against the opening edge surface on the outside of the wire accommodating equipment to the L-shaped locking plate portion provided on the closing plate portion of the first plate portion. It is made by screwing.

Japanese Unexamined Patent Publication No. 2018-183002 Japanese Unexamined Patent Publication No. 2019-22290

However, according to the pipe material connector of Patent Document 1, the corrugated pipe material to be the pipe material is connected in a state of being substantially orthogonal to the hand hole, so that depending on the pipe line configuration at the site, for example, in a narrow place or the like. When it is necessary to bend the pipeline sharply, the bending radius cannot be reduced depending on the pipeline material, and even if it is necessary to diagonally cross the drawer form to deal with this, such a situation can be dealt with. Is difficult.

According to the attachment tool of Patent Document 2, it is suitable to construct a pipeline by drawing an electric wire from the electric wire accommodating facility by a protective pipe connected to the attachment hole and slanting the electric wire from the electric wire accommodating facility. However, even if the side wall of the electric wire accommodating equipment is sandwiched and fixed by the first locking portion locked inside the opening provided in the electric wire accommodating equipment and the second locking portion screwed and pressed to the outside of the opening. Since there is a gap between the inner edge of the opening and the outer edge of the first plate of the fixture, it is necessary to fill this gap with a padding material such as putty or adhesive to prevent the ingress of water or the like. .. When filling these filling materials, etc., it takes a certain amount of time for curing to solidify, so there is no choice but to wait for the backfilling work, etc. to be carried out after that, and as a result, demand It takes time to pull out the electric wire to the house, and it is difficult to shorten the construction period when there is a time constraint such as at night.

Therefore, the present invention was created in view of the above-mentioned conventional circumstances, and is mainly used to provide a lead-in electric wire to a customer from a buried electric line facility such as a handhole, a manhole, a cable trough, etc., which is buried in the ground. When constructing, various types of pipeline materials can be connected and fixed to the buried electrical line equipment in an oblique manner so that they can be used even in narrow places, and the work after the pipe installation following the excavation work, the backfilling work, etc. It is an object of the present invention to provide an attachment device for a pipe material of a buried electric wire facility, which can be processed in a short time without taking troublesome work.

In order to solve the above-mentioned problems, in the present invention, a pipeline material P for storing and protecting the cable C to be drawn out from the knockout N formed in the side wall of the buried electric line facility M is attached to the buried electric line facility M. It is an attachment device for a pipeline material, and is engaged with a pipeline material P which is arranged in the knockout N by closing the knockout N from the inside of the buried electric wire equipment M and is inclined at a predetermined angle with respect to the buried electric wire equipment M. A box-shaped connecting body 2 to be stopped and connected, a fixing band 10 for fixing the pipeline material P connected to the connecting body 2 to the connecting body 2, and a support plate hung from the outside of the buried electric circuit facility M to the knockout N. 13 is connected to the connecting body 2, and the side wall of the buried electric wire facility M is provided with the connecting body 2 and the connecting means 15 for sandwiching the side wall of the buried electric wire facility M from the inside and outside by the support plate 13.
The connecting body 2 is an inclined connecting portion that connects the pipeline material P to the box base 3 that covers the opening of the knockout N from the inside of the buried electric circuit equipment M in the knockout N by inclining it at a predetermined angle with respect to the buried electric circuit equipment M. 4 and a support fixing portion 6 that is substantially parallel to the inner and outer surfaces of the side wall of the buried electric circuit facility M and is continuous with the inclined connecting portion 4, and a continuous portion 7 that is continuous with the support fixing portion 6 with the box base 3. , The inclined connecting portion 4, the supporting fixing portion 6, and the closing portion 8 that closes the side portions of the continuous portion 7 can be integrally formed and configured.
The inclined connecting portion 4 is continuous with the box base 3 at an inclined angle of approximately 45 degrees, and a tubular insertion cylinder 5 corresponding to the outer diameter of the pipeline material P to be connected is connected to the inclined connecting portion 4. It can be configured by being integrally provided toward the outside.
The support fixing portion 6 can be provided at a position not large with respect to the depth of the knockout N from the box base 3.
The fixing band 10 is formed in a C-shape that is connected and arranged along the opening edge of the insertion tube 5 of the inclined connecting portion 4, and is arranged in a confrontational manner on the opening edge and fastened to each other. The fastening piece 11 can be provided and configured.

In the attachment device for pipeline material of the buried electric circuit equipment according to the present invention configured as described above, for example, when the electric pole is eliminated, the customer is from the buried electric circuit equipment M such as a cable trough buried underground or the like. Various cables C are pulled out and wired to the inside, and the pipeline material P to be inserted is connected to the buried electric circuit facility M. That is, a connecting body 2 for locking and connecting the pipeline material P is arranged inside the knockout N having an opening formed in the side wall of the buried electric circuit facility M, and the connecting body 2 and the support plate 13 arranged outside the knockout N are arranged. By connecting the above and the connecting means 15, the side wall of the buried electric circuit facility M is sandwiched, and the pipeline material P is fixed to the buried electric circuit facility M.
The pipeline material P locked and inserted into the insertion cylinder 5 of the inclined connecting portion 4 of the connecting body 2 fixed to the buried electric wire facility M is fixed by the fixing band 10, and the pipeline material P itself is relative to the buried electric wire facility M. Even in a place where the space between the buried electric line facility M and the customer is narrow, the pipeline material P itself and the cable C are not sharply bent, and the customer can use the cable C at a predetermined inclination angle, for example, 45 degrees. The cable C is easily pulled in.
The connecting means 15 for connecting the support and fixing portion 6 of the connecting body 2 arranged from the inside of the buried electric circuit facility M to the inside of the knockout N and the support plate 13 arranged so as to span the outside of the knockout N is the embedded electric circuit facility M. The side wall of the connecting body 2 is sandwiched inside and outside, the connecting body 2 is positioned and fixed inside the knockout N, and the pipeline material P which is locked and connected to the inclined connecting portion 4 of the connecting body 2 is fixedly supported.
In the connecting body 2, a box-shaped predetermined space is formed by a box base 3, an inclined connecting portion 4, a support fixing portion 6, a continuous portion 7, and a closing portion 8, and the conduit material P is inserted and locked, and the cable C is passed. , Each work such as connection with the support plate 13 is performed, and the knockout N is closed from the inside of the knockout N to prevent the intrusion of earth and sand and the like from the outside of the buried electric circuit facility M.
The fixing band 10 formed by connecting along the opening edge of the insertion cylinder 5 of the inclined connecting portion 4 is fixed by the fastening piece 11 in a state of surrounding the pipe material P inserted through the insertion cylinder 5, and the pipe material P is fixed. Prevents the removal and removal of the pipes, and maintains the oblique arrangement.

Since the present invention is configured as described above, when carrying out various cable C and other lead-in works from various buried electric line facilities M buried in the ground due to the maintenance of utility poles to consumers. , The lead-in connection work from the buried electric wire facility M can be easily and surely performed, and the backfilling work etc. can be immediately carried out and connected because it can be reliably cut off from the inside of the buried electric wire facility M without creating a gap. Construction can be shortened.

That is, in the present invention, the knockout N is closed from the inside of the buried electric circuit facility M and arranged inside the knockout N, and the pipeline material P inclined at a predetermined angle is locked and connected to the buried electric circuit facility M. The box-shaped connecting body 2 to be used, the fixing band 10 for fixing the pipeline material P to the connecting body 2, and the support plate 13 hung from the outside of the buried electric circuit facility M to the knockout N are connected to the connecting body 2. This is because the side wall of the buried electric circuit facility M is provided with the connecting body 2 and the connecting means 15 for sandwiching the side wall of the buried electric circuit facility M from the inside and outside by the support plate 13. As a result, it is permissible to immediately carry out the lead-in structure in a narrow place by the diagonally arranged pipeline material P, the inside and outside of the buried electric circuit facility M of the lead-in part of the cable C, and the backfilling work after the connection work is completed. By making it possible to shorten the overall construction period, for example, it is possible to respond to a request that work be carried out in a short time such as at night, and it is possible to quickly carry out pull-in work even in a narrow place.

Further, the connecting body 2 arranged inside the knockout N includes a box base 3 arranged in a contact shape inside the buried electric wire facility M, an inclined connecting portion 4 having an insertion tube 5 and being inclined, and being buried. A support fixing portion 6 arranged substantially in parallel to the inner and outer surfaces of the electric circuit facility M, a continuous portion 7 continuous from the support fixing portion 6 to the box base 3, a closing portion 8 and the like are formed in a box shape in a predetermined space. Work such as connecting the pipeline material P and inserting the cable C can be carried out reasonably in the space.

Not only that, since the connecting body 2 shields the inside of the buried electric circuit facility M from the outside, the side wall is sandwiched via the connecting means 15 with the support plate 13 arranged outside the side wall of the buried electric circuit facility M. Combined with the interconnection configuration, the earth and sand backfilled outside the buried electric circuit facility M does not enter the inside of the buried electric circuit facility M. Moreover, the filling material that closes the gap formed between the knockout N and the knockout N is filled as in the conventional case, the pipeline material P is temporarily fixed until the filling material solidifies, and the pipe material P is temporarily fixed and waits for the solidification. Since there is no need to do this, the work time can be significantly reduced and the construction period as a whole can be shortened.

The inclined connecting portion 4 of the connecting body 2 is provided with an insertion cylinder 5 through which the pipeline material P is inserted, and the fixing band 10 is connected and arranged at the opening edge of the insertion cylinder 5 to be inserted into the insertion cylinder 5. The pipe material P that has been made is surrounded and fastened by the fixing band 10 in a state of being locked by, for example, a bush member B at the inner edge of the inclined connecting portion 4, and can be easily subjected to an external impact, sediment pressure, or the like. It does not come off and is securely fixed and maintained.

It should be noted that the reference numerals added in each of the means for solving the above-mentioned problems and the section of the effect of the invention are added in order to facilitate reference with the parts indicating the constituent parts described in the drawings. The present invention is not limited to the structure, shape, etc. indicated by these descriptions, reference numerals, etc. in the drawings.

It is an exploded perspective view in embodiment for carrying out this invention. It is sectional drawing when it was fixed to the side wall of the buried electric line facility which is also a cable trough. Similarly, it is a plan view which shows the pull-out of a cable in a buried electric circuit facility, and the state of an electric wire.

Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings. Reference numeral 1 shown in the drawings is a mounting device according to the present invention, for example, an embedded box such as a hand hole or a manhole, a cable trough, or the like. In the buried power line equipment M such as the buried power distribution line, for example, the cable C for power supply, communication, etc. is attached to the knockout N portion formed in the side wall of the buried power line equipment M so as to be drawn into the customer. The end of the pipeline material P for protective insertion of the cable C drawn out from the buried power line equipment M is fixedly supported.

The mounting device 1 has a box shape in which the knockout N is closed from the inside of the buried electric circuit facility M and arranged in the knockout N, and the pipeline material P inclined at a predetermined angle is locked and connected to the buried electric circuit facility M. The connecting body 2 of the above, the fixing band 10 for fixing the pipeline material P connected to the connecting body 2 to the connecting body 2, and the support plate 13 hung from the outside of the buried electric circuit facility M to the knockout N are connected to the connecting body 2. The side wall of the buried electric circuit facility M is provided with the connecting body 2 and the connecting means 15 for sandwiching the side wall of the buried electric circuit facility M from the inside and outside by the support plate 13.

The connecting body 2 is an inclined connecting portion that connects the pipeline material P to the box base 3 that covers the opening of the knockout N from the inside of the buried electric circuit equipment M in the knockout N by inclining it at a predetermined angle with respect to the buried electric circuit equipment M. 4, a support and fixing portion 6 that is substantially parallel to the inner and outer surfaces of the buried electric circuit facility M and is continuous with the inclined connecting portion 4, and a continuous portion 7 that is continuous with the support and fixing portion 6 of the box base 3. The inclined connecting portion 4, the supporting fixing portion 6, and the closing portion 8 that closes the side portions of the continuous portion 7 are integrally formed to form a box shape.

By arranging the connecting body 2 from the inside of the buried electric wire facility M to the inside of the knockout N, the connecting body 2 is partitioned inside the knockout N from the outside of the buried electric wire facility M and communicates with the inside of the buried electric wire facility M. A space for connecting the conduit material P to be protected is formed by inserting a cable C or the like to be pulled out into the pipeline material P so as to be inserted. Further, as will be described later, the connecting body 2 also prevents earth and sand and the like at the buried portion from entering the buried electric circuit facility M.

The box base 3 is formed of a plate material having a predetermined thickness that is in contact with the inside of the buried electric circuit facility M in the peripheral portion of the knockout N so as to cover the entire opening of the knockout N. A substantially rectangular opening that integrally connects the inclined connecting portion 4, the continuous portion 7, and the closing portion 8 from the inner edge is formed in a form excluding the surrounding frame portion, and the peripheral portion of the opening of the knockout N is formed. The opening of the knockout N is covered so as to surround the.

For example, when the cable C is pulled out from the buried electric circuit facility M at an angle of about 45 degrees with respect to the buried electric circuit facility M, the inclined connecting portion 4 is continuously provided with an inclined angle of about 45 degrees with respect to the box base 3. There is. The inclined connecting portion 4 is provided with a substantially circular drawer hole into which a conduit material P for inserting and protecting the drawn cable C is inserted, and the peripheral end of the withdrawal hole is substantially the base end. The tubular insertion tube 5 is integrally provided toward the outside of the inclined connecting portion 4 itself. The inner diameter of the insertion cylinder 5 corresponds to the outer diameter of the pipe material P so that the pipe material P to be connected is charged, and the bush member B attached to the pipe end of the pipe material P is a drawer hole. It is designed to be locked to the opening edge of. The angle of inclination of the pipeline material P to be connected is not limited to 45 degrees, and a plurality of types of inclined connecting portions 4 having different inclination angles should be formed so as to be compatible with the situation of the installation location. Is also possible.

The support fixing portion 6 is positioned in the knockout N so as to be substantially parallel to the box base 3 and the support plate 13, and from the box base 3, the depth of the knockout N, that is, the side wall of the buried electric circuit facility M. It is provided at a position that is not large compared to the wall thickness.

The continuous portion 7 faces the inclined connecting portion 4, and positions the supporting and fixing portion 6 together with the inclined connecting portion 4. In the figure, the continuous portion 7 is substantially perpendicular to the box base 3, but may be provided in a slightly inclined shape in some cases.

The closing portion 8 is provided on both sides of a gap formed by an inclined connecting portion 4, a support fixing portion 6, and a continuous portion 7 which are sequentially arranged from one side of the box base 3 to the box base 3 in a bulging shape. By closing the cable C, a predetermined space for pulling out the cable C is formed. The closed portion 8 itself in the drawing has a substantially trapezoidal shape with an inclined edge.

Further, the fixed band 10 is formed into a C-shape having a diameter substantially similar to the diameter of the insertion cylinder 5 by a strip-shaped material having a predetermined width connected to the insertion cylinder 5 in the inclined connecting portion 4, for example, by a connecting piece 9. It is arranged along the opening edge of the insertion tube 5. A fastening piece 11 is provided on the open end edge of the fixing band 10 and is arranged in a confrontational manner and screwed 12 to each other by, for example, bolts and nuts (screw holes), and is inserted into the insertion tube 5. By surrounding and fastening the road material P, it can be fixedly connected to the inclined connecting portion 4.

The support plate 13 is arranged substantially parallel to the support fixing portion 6 in the connecting body 2 arranged in the knockout N, and is arranged so as to hang over the opening portion of the knockout N on the outside of the side wall of the buried electric circuit facility M. It is formed in the shape of a substantially rectangular plate with a predetermined wall thickness. In some cases, a part of the side edge may be cut off in an arc shape as shown in the drawing in order to prevent the side edge from coming into contact with the conduit material P inserted through the insertion tube 5.

The connecting means 15 is formed by screwing and connecting the support fixing portion 6 and the support plate 13 of the connecting body 2 with, for example, bolts and nuts (female screw holes), and if necessary, the bolts are connected from the inside of the support fixing portion 6. It may be fixed so that it protrudes outward.

Next, an example of use in the above embodiment will be described. In the buried electric wire facility M such as a cable trough, the knockout N on the side wall of the buried electric wire facility M corresponding to the required lead-in point to the customer is opened. The connecting body 2 is fitted from the inside of the knockout N, and the box base 3 is brought into contact with the peripheral edge of the knockout N with the base packing material 21 sandwiched between them.

On the other hand, the support plate 13 arranged on the outside of the buried electric circuit equipment M is screwed and buried by the bolt of the connecting means 15 inserted through the support and fixing portion 6 of the connecting body 2 along the inside and outside directions of the buried electric circuit equipment M. The connecting body 2 is arranged and fixed in the knockout N by sandwiching it inside and outside the side wall of the electric circuit facility M.

Further, a bush having a conduit material P such as a spiral pipe inserted into an insertion cylinder 5 obliquely arranged with respect to the buried electric circuit facility M and fitted to the conduit material P inside the connecting body 2. The member B is locked to the opening edge inside the insertion tube 5, and the pipeline material P is fixed to the connecting body 2 by sandwiching the loop-shaped, for example, rubber pipeline packing material 22 by the fixing band 10.

Next, the predetermined cable C to be pulled into the pipeline material P is connected to the predetermined cable C in the buried electric line facility M, and thus the connection to the customer at the lead-in point is completed. Inside the buried electric circuit facility M, the box base 3 of the connecting body 2 covers the knockout N, and the pipeline material P is connected to the insertion cylinder 5, so that the inside of the connecting body 2 is cut off from the outside without a gap. Therefore, for example, even if the material is backfilled as it is without the need for filling work such as filling, earth and sand do not invade and the construction period can be shortened.

B ... Bush member C ... Cable N ... Knockout M ... Buried electric wire equipment P ... Pipeline material 1 ... Mounting device 2 ... Connecting body 3 ... Box base 4 ... Inclined connecting part 5 ... Insertion cylinder 6 ... Support fixing part 7 ... Continuous part 8 ... Closure 9 ... Connection piece 10 ... Fixing band 11 ... Fastening piece 12 ... Screwing 21 ... Base packing material 22 ... Pipeline packing material

Claims (5)

It is an attachment device for pipeline materials that attaches a pipeline material that stores and protects a cable to be drawn out from a knockout formed in the side wall of the buried electric circuit equipment to the buried electric circuit equipment, and blocks the knockout from the inside of the buried electric circuit equipment. A box-shaped connecting body that is arranged in the knockout and is inclined to the buried electric line facility at a predetermined angle is locked and connected, and the pipeline material connected to the connecting body is fixed to the connecting body. It is characterized by comprising a fixed band and a connecting means for connecting a support plate hung from the outside of the buried electric wire facility to a knockout to a connecting body and sandwiching the side wall of the buried electric wire facility from the inside and outside by the connecting body and the support plate. Mounting device for pipeline materials of buried electric wire equipment. The connecting body consists of a box base that covers the knockout opening from the inside of the buried electric circuit equipment in the knockout, an inclined connecting portion that inclines the pipe material at a predetermined angle to the buried electric circuit equipment, and a side wall in the buried electric circuit equipment. A support fixing portion that is substantially parallel to the inner and outer surfaces of the structure and is continuous with the inclined connecting portion, a continuous portion that connects the supporting fixing portion to the box base, and these inclined connecting portions, the supporting fixing portion, and the continuous portion. The attachment device for a pipeline material of an embedded electric circuit facility according to claim 1, wherein the closed portion that closes the side portion is integrally formed. The inclined connecting portion is continuous with an inclination angle of approximately 45 degrees with respect to the box base, and a tubular insertion cylinder corresponding to the outer diameter of the connecting pipeline material is directed outward of the inclined connecting portion itself. The attachment device for a pipeline material of a buried electric circuit facility according to claim 1 or 2, which is integrally provided. The attachment device for a pipeline material of an embedded electric circuit facility according to any one of claims 1 to 3, wherein the support fixing portion is provided at a position not large with respect to the knockout depth from the box base. The fixing band is formed in a C-shape that is connected and arranged along the opening edge of the insertion tube of the inclined connecting portion, and is arranged in a confrontational manner on the opening edge and fastened to each other. The attachment device for a pipeline material of a buried electric circuit facility according to any one of claims 1 to 4, wherein the device is provided.

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