JP7381099B2 - Device for aligning fiber sheaths at the open end of a conduit - Google Patents

Description

The present invention installs a plurality of fiber sheath tubes in a conduit such as a common electric cable ditch through which various cables buried underground are inserted, so that cables for communication and broadcasting can be routed in sections for each type to protect them. This invention relates to a device for aligning fiber sheaths at the open end of a conduit, which aligns and divides the fiber sheaths at the open end of the conduit to be inserted, so that the fiber sheaths can be inserted into the conduit in a flat shape along the vertical direction. .

Conventionally, in order to bury various types of cables underground, a conduit made of concrete, steel, or synthetic resin is buried, and a sheath tube made of synthetic resin, for example, of a predetermined diameter corresponding to each cable type is inserted into this conduit. A predetermined cable is sequentially routed through each sheath tube. With such rigid sheaths, it is not only troublesome to insert them into the conduit as the sheaths of a predetermined length are connected one after another, but the space occupied by the cable is also small. Due to the large space, the space volume becomes large and the conduit diameter becomes larger than necessary.

In place of such rigid sheath tubes, a long cylindrical flexible sheath tube made of fibers has been proposed, which allows the wire passage space to be set according to the diameter of the cable through which the wire runs. For example, the cable guiding sleeve structure shown in Patent Document 1, the multi-compartment overhead duct shown in Patent Document 2, the method and apparatus for dividing a conduit into a plurality of compartments shown in Patent Document 3, and the method and apparatus shown in Patent Document 4 textiles and internal ducts with multiple inserted transverse yarns. These belts are made by knitting synthetic fiber warps, wefts, etc. into a long cylindrical shape by sewing together the edges, and enclosing a string-like cable pulling member inside.

Patent No. 4047332 Patent No. 4128534 Patent No. 4236841 Patent No. 5801412

According to the fiber sheath tube shown in the above-mentioned patent documents, etc., various cables can be passed through the fiber sheath tube after being inserted into the conduit. Not only is construction easy, but it also has the advantage of reducing space capacity.

However, even if these fibers and tubes have the advantage of being inserted into a long conduit, if the multiple fibers or tubes inserted into the conduit become twisted or bent, the subsequent cable routing Work becomes extremely difficult. Furthermore, if the tube is twisted or bent, it is virtually impossible to identify or confirm the location within the conduit, and reinsertion is also troublesome.

Therefore, the present invention was created in view of the existing circumstances as described above, and allows the fiber sheath tube to be inserted into the conduit in an aligned state, and the subsequent wiring work of various cables to be carried out without any problems. An object of the present invention is to provide a device for aligning fiber sheaths at the open end of a conduit.

In order to solve the above-mentioned problems, in the present invention, a plurality of fiber sheath tubes S are inserted into a conduit P buried underground and capable of accommodating various cables C at the open end of the conduit. This is an alignment device for fiber sheath pipes, which includes an installation base 1 attached to the open end of a conduit P, an upper support member 11 and a lower support member 16 fixed to the upper and lower parts of this installation base 1, and these upper support members. 11. It is characterized by comprising a sorting material 21 which is detachably arranged between the lower support members 16 and which sorts a plurality of divided fiber sheath tubes S.
The upper support member 11 and the lower support member 16 each include fixing parts 12 and 17 fixed to one surface of the installation base, and support parts bent orthogonally from the fixing parts 12 and 17 and facing each other in the vertical direction. 13 and 18, it can be formed into an L-shape in cross section when viewed from the side.
The sorting materials 21 are inserted into and supported by the array holes 19 that are opened at predetermined intervals in the support parts 13 and 18 of the upper support member 11 and the lower support member 16, respectively, and are vertically opposed to each other. It can be configured by
Further, the sorting material 21 is in the shape of a bar having a head, and is inserted through the arrangement hole 19 of the upper support member 11 to the arrangement hole 19 of the lower support member 16 . The head can be configured to be locked to the edge of the hole.
A predetermined number of bundle-shaped fiber sheath tubes S bound together can be inserted and positioned between the sorting materials 21.

In the apparatus for aligning fiber sheaths at the open end of a conduit P according to the present invention configured as described above, the upper support member 11 fixed to the upper and lower parts of the installation base 1 attached to the open end of the conduit P, and the lower support The fiber sheath tube S bundled in a predetermined number can be sorted by the sorting material 21 arranged vertically between the members 16, and the fiber sheath tube S is inserted into the conduit P in the sorted state.
The sorting material 21 is, for example, a fiber sheath tube S connected to the traction machine M so as to be pulled by the traction machine M, and after positioning the tip part on the traction side in the conduit P together with the traction machine M, the fibers are bundled in a predetermined number. By inserting and arranging between the upper support member 11 and the lower support member 16 at a predetermined position corresponding to each fiber sheath S, each fiber sheath S is divided and positioned.
The sorting material 21 is arranged between the upper support member 11 and the lower support member 16 by inserting and positioning the leading end of the fiber sheath tube S into the conduit P, and then aligning each fiber sheath tube S. These can be detachably set at the sorting position.
In addition, the head of the bar-shaped sorting material 21 is latched and supported by the hole edge of the arrangement hole 19 of the upper support member 11, so that a predetermined number of sheets can be bound by simply inserting the material from above the upper support member 11. The bundled fiber sheath tubes S are sorted and sectioned and positioned.

Since the present invention is constructed as described above, for example, when a plurality of bundles of fiber sheath tubes S are inserted into a conduit P for an electric wire common ditch buried underground, one tube end opening of the conduit P is inserted. It is possible to separate and position each fiber sheath tube S. Therefore, when the fiber sheath tube S is pulled from the other tube end opening and inserted, mutual twisting, entanglement, etc. can be prevented from occurring within the fiber sheath tube S, and this can be done at a later date. Various cables C can be drawn in and run smoothly.

In the present invention, this is separated by being arranged removably between the installation base 1 attached to the open end of the conduit P, and the upper support members 11 and lower support members 16 fixed to the upper and lower parts of the installation base 1. This is because it includes a sorting material 21 for sorting each of the plurality of fiber sheath tubes S. As a result, a plurality of fiber sheath tubes S can be aligned at the insertion introduction point into the conduit P, and the fiber sheath tube S can be smoothly inserted and guided to the outlet side end point.

In addition, sorting materials 21 are removably inserted and arranged at predetermined intervals between the upper support member 11 and the lower support member 16 fixed to the upper and lower parts of the installation base 1, so that, for example, a bundle of fiber sheaths S to be inserted is arranged. You can also set and adjust the separation interval depending on the size of the image. Furthermore, the flat fiber sheath tube S can be arranged vertically when connected to the traction machine M, and the insertion operation by the traction machine M can be performed smoothly.

The head of the sorting material 21 is locked to the hole edge of the arrangement hole 19 of the upper support member 11, so that when the sorting material 21 is arranged between the upper support member 11 and the lower support member 16, the sorting material 21 can be sorted. Since the members 21 themselves are rod-shaped, they can be arranged at predetermined intervals by being inserted through the upper support member 11 from above.

It should be noted that the reference numerals added in each of the sections ``Means for Solving the Problems'' and ``Effects of the Invention'' are added to facilitate reference to the parts indicating each component described in the drawings. The present invention is not limited to the structure, shape, etc. shown by these descriptions or the symbols in the drawings.

FIG. 1 is an exploded perspective view showing one embodiment of the present invention. It is also a front view at the time of installation. It is also a plan view at the time of installation. Similarly, it is a side sectional view at the time of installation. It is a schematic perspective view showing an example of arrangement of a fiber sheath tube when similarly inserting a fiber sheath tube into a conduit. FIG. 6 is a side cross-sectional view showing the temporarily supported state of the fiber sheath tube after being inserted into the conduit.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 shown in the drawings indicates a conduit P which is buried underground and is made of, for example, concrete, steel, synthetic resin, etc. An installation base is installed at the open end of the device so as to surround the open end. This installation base 1 is, for example, an insert tool placed outside the periphery of the open end of the conduit P, for example, in a buried box B described later, on the periphery of an opening provided in the concrete wall of the buried box B to communicate with the conduit P. 2, by screwing a plurality of mounting bolts 3 through the installation base 1.

In addition, the conduit P is connected to various buried boxes B, such as wiring boxes and manholes, which are buried in areas where the elimination of utility poles is promoted, for example, as a common electric wire trench, etc. The device of the present invention is installed at the open end of the box B on the introduction side of the various cables C.

The installation base 1 itself is formed in the shape of a circular frame plate, corresponding to the fact that the conduit P has a circular cross section as shown in the figure. Of course, when the conduit P has a rectangular cross section, for example, the installation base 1 itself is formed in the shape of a rectangular frame plate, corresponding to the shape of the open end of the conduit P. The inner peripheral edge of the installation base 1 is formed into a tapered surface that gradually widens from the inside toward the outside on the conduit P side, so that the fiber sheath tube S itself can be easily inserted into the conduit P. We have taken this into consideration.

The fiber sheath tube S is formed into a flat long tube by sewing together the edges of a strip material woven from polyethylene terephthal (PET) fibers, nylon fibers, etc. It is made up of connotations. For example, 3 to 5 strips are bundled in parallel by stitching one edge part together, and are stored, for example, rolled on a drum or rolled in a packaging container. It has been prepared.

An upper support member 11 and a lower support member 16 are respectively fixed to the installation base 1 so as to face each other at the upper and lower parts thereof, and between these upper support members 11 and lower support members 16, a plurality of parts are bundled together. Sorting materials 21 for sorting each bundle of fiber sheath tubes S are detachably arranged at predetermined intervals.

Each of the upper support member 11 and the lower support member 16 includes fixing parts 12 and 17 that are fixed in contact with one surface of the installation base, and supports that are bent perpendicularly from the fixing parts 12 and 17 and face each other in the vertical direction. It consists of parts 13 and 18, and has an L-shape in cross section when viewed from the side. The upper support member 11 and the lower support member 16 are screwed and fixed to the installation base 1 using fixing screws 15 inserted through the fixing parts 12 and 17, respectively.

The support part 13 of the upper support member 11 and the support part 18 of the lower support member 16 are provided with arrangement holes 19 for inserting and holding the plurality of sorting materials 21 arranged in the vertical direction therebetween. It is set up. As shown in the figure, the sorting material 21 itself is formed into a round rod shape by a long bolt with a head, and is inserted directly into the arrangement hole 19 of the upper support member 11 from the tip side, and then placed in the lower position. It is inserted into an arrangement hole 19 of a support section 18 in a certain lower support member 16 . The head is held between the upper support member 11 and the lower support member 16 by engaging with the opening edge of the arrangement hole 19 of the upper support member 11, and as necessary, at the lower support member 16 portion, For example, it is fixed with screws.

The interval between the sorting materials 21 is set to such an extent that it is not smaller than the thickness of the entire fiber sheath tube S, which is bundled in a plurality of fiber sheaths, for example, three to five fiber sheaths. Although the sorting material 21 itself is arranged so that six piping sections can be obtained by arranging seven pieces as shown in the figure, the present invention is not limited to this.

The support portion 13 of the upper support member 11 is provided with a large number of slit-shaped support and binding holes 14, so that after the fiber sheath tube S has been inserted into the conduit P, the fiber sheath tube S itself In order to prevent the fibers from being drawn into the conduit P, for example, a binding band F inserted and supported through the fiber sheath pipe S is supported by being inserted and fixed into the support binding hole 14 (see FIG. 6).

An example of its use will now be described below. For example, the device of the present invention is installed at the open end of one of the buried boxes B buried underground, and a conduit P serving as a common electric cable trench connected therebetween. At the time of installation, the installation base 1 to which the upper support member 11 and the lower support member 16 are attached is attached to the open end of the conduit P, that is, in a state in which the sorting materials 21 are not arranged. In addition, the inside of the conduit P is cleaned, and a pulling string material for pulling the fiber sheath tube S is inserted into the conduit P.

Next, a plurality of bundles of fiber sheaths S to be inserted, which have been pulled out from a sheath drum in which a predetermined number of bundled fiber sheaths S are wound and accommodated, are placed in a traction machine M running in the conduit P. The traction machine M, which is separated and connected at each time, is positioned within the conduit P. At this time, the plurality of bundled fiber sheath tubes S are placed together with the traction machine M in the conduit P on the inside of the installation base 1 attached to the open end of the conduit P.

Therefore, the sorting material 21 is inserted and fixed between the upper support member 11 and the lower support member 16 on the installation base 1 so that each fiber sheath tube S bundle is positioned between the sorting materials 21. In addition, at this time, the fiber sheath tube S bundle is connected to the pulling machine M with the part bound into a bundle positioned upwardly and exhibiting a flat shape along the vertical direction, and the sorting material 21 They are also inserted vertically between each other.

Thereafter, the fiber sheath tube bundle S is drawn into and inserted into the conduit P by a pulling machine M that is towed and driven, and is pulled until it reaches the other open end of the conduit P. Each of the fiber sheaths S coming out from the other open end is cut to an appropriate length, and an identification label, tag, or other identification mark is attached so that each can be identified.

In addition, when the insertion work of the fiber sheath tube S is completed, the fiber sheath tube S and, if necessary, the cable pulling string T are pulled alternately, for example, about 2 to 3 times, at both end openings of the conduit P. To prevent so-called bunching phenomena such as twisting, bending, twisting, etc. from occurring.

In this way, after the fiber sheath tube S has been inserted into the conduit P, the fiber sheath tube S is pulled at both end openings of the conduit P to prevent the fiber sheath tube S itself from being drawn into the conduit P. Then, the binding band F inserted and supported through the fiber sheath pipe S is attached and fixed to the support binding hole 14. Furthermore, the cable pulling strings T inserted into each of the fiber sheath tubes S are tied together in a bundle, so that various cables C can be pulled into the fiber sheath tube S using the cable pulling strings T at a later date. Prepare for work.

B... Buried box C... Cable F... Binding band M... Traction machine P... Conduit S... Fiber sheath tube T... Cable pulling string 1... Installation base 2... Insert tool 3... Mounting bolt 11... Upper support member 12... Fixing part 13...Support part 14...Support binding hole 15...Fixing screw 16...Lower support member 17...Fixing part 18...Support part 19...Sequence hole 21...Sorting material

Claims (4)

A device for aligning fiber sheaths and tubes at the open end of a conduit, in which a plurality of fiber sheaths and tubes are inserted and placed in a conduit buried underground and capable of accommodating various cables inside, and installed at the open end of the conduit. A base, an upper support member and a lower support member each having supporting parts that are fixed to the upper and lower parts of the installation base and facing each other in the vertical direction, and that can be freely attached and detached between the upper support member and the lower support member. A sorting material is provided for sorting a plurality of fiber sheaths arranged and divided into tubes , and the sorting material has arrangement holes drilled at predetermined intervals in the support portions of the upper support member and the lower support member. A device for aligning fiber sheaths at an open end of a conduit , characterized in that the fiber sheaths are inserted through and supported by alignment holes that face each other in the vertical direction . Each of the upper support member and the lower support member has a cross section when viewed from the side, consisting of a fixed part fixed to the installation base surface and the supporting part bent orthogonally from the fixed part and facing each other in the vertical direction. 2. The apparatus for aligning fiber sheaths at the open end of a conduit according to claim 1, which is formed into an L-shape. The sorting material is in the shape of a bar having a head, and is inserted through the arrangement hole of the upper support member to the arrangement hole of the lower support member, and the head is locked to the hole edge of the arrangement hole of the upper support member. 3. A device for aligning fiber sheaths at an open end of a conduit according to claim 1 or 2 . The fiber sheath tube at the open end of the conduit according to any one of claims 1 to 3, wherein a predetermined number of bundled fiber sheath tubes are inserted and positioned between the sorting materials. alignment device.

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