JP2000261944A - Pipe pillow - Google Patents

Abstract

PROBLEM TO BE SOLVED: To support in desired angle the lengthwise direction of a pipe for the lengthwise direction of a pipe pillow. SOLUTION: Pipe pillows 10, 20, 30 are formed of fixing members 11, 21, 31 and receptor 12, and the receptor 12 is provided freely rotatably around a shaft provided in the vertical direction for the fixing members 11, 21, 31. Even if the lengthwise direction of a beam (h) of bridge and a pipe P is inclined, rotation of the receptor 12 copes with such an inclination. In this way, the rotation of the receptor 12 is coped with the flexure running when a multiple- hole pipe is laid within a tunnel by carrying the pipe with a truck.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe pillow for inserting a power cable or a communication cable, a pipe fixing structure thereof, and an underground piping method for a perforated pipe.

[0002]

2. Description of the Related Art In recent years, power cables and communication cables have been
For aesthetic purposes and to protect cables, they are often inserted into pipes, attached to bridges, or laid underground. For example, as shown in FIGS. 18 and 19, a plurality of rows are provided in a main girder E mounted on an abutment or pier D via a bearing c.
The protective tubes P are arranged in a plurality of stages and are attached to a bridge. In other words, the main girder E shown in FIG. 18 has a pipe P disposed on its beam h as shown in FIGS. 23 to 25, and the main girder E shown in FIG. e.
In the figure, B is a roadbed.

[0003] The protective tube P is made of FRP or the like, and as shown in FIG. 20, is configured as a multi-line, multi-stage, perforated pipeline A. The perforated conduit A is generally
A required number of pipes P are arranged in parallel on the lowermost pipe pillow 30, the parallel pipes P are stacked on the parallel pipe P with an intermediate pipe pillow 20 interposed therebetween, and the uppermost row of pipe pillows (top row) A pipe pillow) 10 is placed, and bolt bolts 40 are inserted through both ends of each of the pipe pillows 10, 20, and 30 and bolts and nuts are tightened. Done at length intervals.

[0004] Conventional pipe pillows 10 constituting these pipes,
Reference numerals 20 and 30 each have a recess 1 in which the pipe P is fitted on the upper surface, the lower surface, or both surfaces of the rod-shaped member, as shown in FIGS. The pipe pillows 10, 20, and 30 in FIG. 21 are used when the length direction of the pipe P is orthogonal to the length direction of the pipe pillow, and the pipe pillows 10, 20, and 30 in FIG. It is used when the length direction of the pipe P is inclined right and left with respect to the length direction.

[0005]

The perforated conduit A having the above structure
When being mounted on a bridge or placed in a tunnel or a trough, the lowermost or uppermost pipe pillows 30, 10 are fixed to the bridge or the ground to be fixed. At this time, the length direction of the pipe pillow and the length direction of the pipe P are not right angles but may have various angles, or the pipe P may be bent up and down. For example, when attaching to a bridge, the beam h corresponding to the distance between the pipe pillows is not orthogonal to the length direction of the pipe (FIG. 23), or for some reason, the pipe P is bent or the beam h is inclined. It must be provided (FIGS. 24 and 25), and in many cases, the length direction of the beam h of the bridge H (main girder E) and the length direction of the pipe P are not fixed.
In this case, it is necessary to make the axial direction of the concave portion 1 of the tube pillows 10, 20, 30 shown in FIG. 22 correspond to each inclination. Conventionally, various types of pipe pillows having different inclinations are prepared, or the concave portion 1 is cut so as to have a required inclination. Preparing each type of tube pillow of the former is costly, and cutting of the latter has poor workability and is cumbersome.

As shown in FIG. 18, a beam h of a main girder E at an end fulcrum (FIG. 1A) and an intermediate fulcrum (FIG. 1B).
26, the pipe A must be bent up and down, and as shown in FIG. 26, the pipe A must be bent up and down to avoid structures such as protrusions. . When the pipe A is bent not only in the horizontal direction but also in the vertical direction, it is sufficient that the pipe pillow 30 can be fixed to the bridge h of the bridge in an inclined state corresponding to the bending. More specifically, the actual situation is that various types of pipe pillows are prepared according to the inclination, and the concave portion 1 is appropriately cut at the site to cope with the situation. Therefore, as described above,
There are problems such as an increase in cost.

Further, there is a case where the perforated pipeline A is mounted on a bogie D in a state of being assembled as shown in FIG. 17, and is then sent into a tunnel T for underground piping. In this case, the tunnel T may be bent (curved) as well as a straight line. In this case, there is a problem in how the pipe pillow responds to bending and running. That is, when the perforated pipeline A is placed on the truck D via the lowermost tube pillow, a twist occurs between the truck D following the curved traveling and the tube pillow that supports the pipe P that cannot bend when the vehicle is bent. For this reason, conventionally, a rotation mechanism for absorbing the twist is provided between the tube pillow 30 and the truck D or on the wheels of the truck D.

The first object of the present invention is to make it possible to easily cope with various inclinations in the longitudinal direction of the tube with respect to the longitudinal direction of the tube pillow under the above-mentioned circumstances. A second object of the present invention is to provide a novel structure of a pipe pillow for bending traveling of underground piping of a kind of perforated pipeline.

[0009]

In order to solve the above-mentioned first problem, the present invention provides a pipe pillow comprising a receiving table which is applied in a circumferential direction of an outer surface of a pipe, and a member which supports the receiving table. And
The cradle is rotatable about the vertical axis with respect to the support member.

As described above, when the cradle is rotatable, the cradle can be rotated in accordance with the inclination of the tube pillow in the longitudinal direction and the longitudinal direction of the tube. It can be fixed at any inclination with respect to the vertical direction. At this time, the cradle may be left rotatable. For example, a bolt and a nut may be attached, the nut may be loosened to a required angle, and then the nut may be tightened and fixed. That is, the rotatable condition includes a freely rotatable condition, as long as the receiving table can be rotated in any way and set to an arbitrary position, and the rotatable condition can always be rotated to an arbitrary position.

[0011] Further, if the receiving table is rotatable about the longitudinal axis of the supporting member, it is possible to cope with the vertical inclination of the pipe with respect to the pipe pillow in the longitudinal direction.

In these tube pillows, if the pedestal is made rotatable about the vertical axis or the horizontal axis, the torsion between the tube pillow and the pipe can be dealt with by rotation of the pedestal. For this reason, if a perforated pipeline is attached to the bogie via this pipe pillow, it is possible to cope with bending running in a tunnel. That is,
The second problem can be solved.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention for achieving the first object is a pipe pillow used when a pipe through which a power cable or a communication cable is inserted is attached to a bridge or laid underground. A cradle applied to the outer peripheral surface of the tube in a circumferential direction, and a member for supporting the cradle, wherein the cradle is configured to be rotatable about the vertical axis with respect to the support member. Can be adopted.

As a more specific structure of the tube pillow, a structure in which the pedestal is a curved member along the peripheral surface of the tube and the center thereof is fixed to a support member by bolts and nuts can be adopted. At this time, the fixation with the bolt and nut
The cradle may be rotatable or rotatable (see the description of FIG. 8).

Further, it is also possible to adopt a configuration in which both ends of the support member in the radial direction of the tube are rotatable around the radial axis by other members. With this configuration, the receiving base can rotate around the axis in the length direction (the radial direction) of the support member, and can cope with the vertical inclination of the tube. This rotation about the axis can be used together with the rotation about the vertical axis.

In the pipe pillow having the above-described structure, as in the conventional case, when the cable insertion pipes are stacked in a plurality of stages, a plurality of rows or a plurality of rows / a plurality of stages, or when piped in a single row, the lowermost row, each The lowermost support member and the uppermost support member are tightened with bolts and nuts between the pipes and at the uppermost level, and a plurality of rows and a plurality of levels of pipes are integrated to form a pipeline.

As described above, the pipe pillow in which the receiving stand can be rotated is preferably used, for example, in a perforated pipe line of a bridge over which the length direction of the pipe pillow and the length direction of the mounting member thereof are different. That is, the lowermost or uppermost pipe pillow is fixed to the beam h of the bridge H or the like.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of pipe pillows 10, 20, 30 and a pipe fixing structure of a perforated pipe by the pipe pillows is shown in FIGS.
The tube pillows 10, 20, 30 are respectively fixed members 11,
21, 31 and the pedestal 12 of the tube P, which are FR
It is made by resin molding, press molding, etc., using various things such as P and iron. The upper and lower tube pillows 10 and 30 each have a pedestal 12 on one surface, and the intermediate tube pillow 20 has the pedestal 12 on the upper and lower surfaces. The interval and the number of the pedestals 12 are appropriately determined according to the diameter of the pipes P and the number of tubes P arranged in parallel.

As shown in FIG. 7, the mounting of the pedestal 12 to the fixing members 11, 21 and 31 is performed by using bolts 13 having threads formed at both ends thereof at the center of the pedestal 12 and the fixing members 11, 2 and 31.
Nuts 14 at both ends of the bolt 13
Is screwed through the washer 15. At this time, as shown in FIG.
1, 31 screw bolts 13 than the length L ₁ of the through-holes of not forming a length L ₂ and a long, stationary member 11,2
The pedestal 12 is rotatable around the axis of the bolt 13 with respect to 1 and 31. Instead of the bolt 13 and the nut 14, a bolt with a head may be used so that the nut 13 can be fastened with one nut. In addition, when it is not necessary to be rotatable, L ₂ <L ₁ may be satisfied.

As shown in FIGS. 1 to 5, for example, as shown in FIGS. 1 to 5, the pipe pillows 10, 20, and 30 have a lowermost pipe pillow 30 placed on a beam h of a bridge H and a fixing member 31 for the pipe pillow 30. The bolt bar 40 is inserted into the beam h through the through holes 16 at both ends and is fastened with a nut, and the pipe P is placed on the pipe pillow 30 via the receiving base 12. Thereafter, the intermediate pipe pillows 20 and the pipes P are alternately placed, and the uppermost pipe pillow 10 is applied to the uppermost parallel pipe P,
The nut is screwed into the bolt bar 40 and fastened.

The pipes P are integrated by the pipe pillows 10, 20, and 30 at required length intervals of the multi-row, multi-stage pipes of the pipes P. At this time, as shown in FIGS. 3 to 5, even if the length direction of the beam h and the length direction of the pipe P are inclined with respect to the orthogonal direction, the rotation of the pedestal 12 makes the pipe pillow independent of the inclination. The fixing member 31 of 30 can be fixed to the beam h, and the pedestals 12 of the other pipe pillows 10 and 20 rotate with respect to the fixing members 11 and 21 to follow the pipe P.

Cradle 1 for fixing members 11, 21, 31
The number of 2 is arbitrary, and may be, for example, 2 (FIG. 9A), 1 (FIG. 9B), or 3, 5 or more as shown in FIG. In the same figure, only the lowermost tiers 10 and 30 are shown, but the number of the pedestals 12 is also arbitrary for the intermediate pipe pillow 20, and one use mode of the pipe pillow of FIG. )
2 (b) shows one use mode of the tube pillow of FIG. 2 (b). In FIG. 3B, even when the number of the protective tubes P is one (one stage), the lowermost tube pillows 10, 30 are provided.
Can be attached to the beam h, and FIG.
As shown in FIG. 7, a plurality of rows and a single row can be similarly attached.

In the tube pillows 10, 20, and 30 of the above embodiment, the receiving table 12 is only rotatable (freely) about a vertical axis (around the bolt 13). However, as shown in FIG.
Attachment members 32 are further provided at both ends of the lowermost fixing member 31 and can be rotatably or freely mounted with bolts and nuts 17 and 18, as shown by the arrow in FIG. 12) can also rotate about the axis with respect to the mounting member 32. If this happens, FIG.
As shown in 2 and 13, by fixing the mounting member 32 to the beam h via the pedestal 33, it is possible to cope with not only the length direction of the pipe P but also the inclination in the vertical direction. If it is necessary that the receiving base 12 of the intermediate pipe pillow 20 also be rotatable around the axis of the pipe pillow, it may be configured as shown in FIG. At this time, it is needless to say that the top tube pillow 10 shown in FIG. 11 may be used.

The integration of the pipe P is performed by pipe pillows 10, 20,
With respect to 30 (fixing members 11, 21, 31), the pipe P can move left and right or up, down, left and right. For this reason, as shown in FIG. 17, when the bogie D is run on the rail Q in the tunnel T and the underground piping is performed in the perforated pipeline, the lowermost pipe pillow 30 is placed on the pedestal 50 of the bogie D, Even if it is bolted and the perforated pipe is supported on the carriage D and sent into the tunnel T, the rotation of the receiving base 12 corresponds to the bending travel.

The perforated pipe A is mounted on the beam h. However, as shown in FIGS. 15 and 16, the perforated pipe A is attached to the beam h (main girder E) via a hanging rod e or the like. Can also be mounted. At this time, as shown by a chain line in FIG. 11A, if the hanging piece 33 is welded to the end of the fixing member 31, attachment becomes easy. In the case of this suspension mode, it is preferable that the receiving table 12 can be rotated around the horizontal axis, but it is also possible to rotate only the vertical axis.

The sectional shapes of the fixing members 11, 21, 31 are as follows:
An L-shape, a U-shape, or the like is appropriately selected according to the mounting mode.

[0027]

According to the present invention, since the pedestal of the pipe pillow is made rotatable as described above, the pipe can be supported and integrated by the pipe pillow regardless of the inclination of the pipe. For this reason, the workability of the pipeline is improved, for example, the conventional work of cutting the concave portion is eliminated, and an error in the construction accuracy of the pipe pillow or the like at the site can be absorbed. In addition, the number of types of tube pillows can be reduced, resulting in cost reduction. Furthermore, it is also significant in underground piping using a bogie.

[Brief description of the drawings]

FIG. 1 is a construction plan view of an embodiment of a pipe fixing structure of a perforated conduit.

FIG. 2 is a front view of FIG. 1A part of the embodiment.

FIG. 3 is a front view of FIG. 1B portion of the embodiment.

FIG. 4 is a right side view of FIG.

FIG. 5 is a plan view of FIG. 3;

FIGS. 6A and 6B are perspective views showing one embodiment of a tube pillow, wherein FIG. 6A is an uppermost tube pillow, FIG. 6B is an intermediate tube pillow, and FIG.

7A is a sectional view taken along line AA of FIG. 6B, and FIG.
Is a sectional view taken along line AA of FIG.

FIG. 8 is an exploded sectional view of a main part of the pipe pillow.

FIG. 9 is a perspective view of another embodiment of the tube pillow.

FIG. 10 is an explanatory view of use of the tube pillow of the embodiment.

11 shows another embodiment of a tube pillow, (a) is a perspective view,
(B) is an exploded perspective view of a main part.

FIG. 12 is a front view of the pipe fixing structure of the perforated pipe according to the embodiment.

FIG. 13 is a right side view of the same.

14A and 14B show another embodiment of a tube pillow, wherein FIG.
(B) is an enlarged sectional view of the main part, and (c) is an exploded perspective view of the main part.

FIG. 15 is a view showing another use mode.

FIG. 16 is a view showing another use mode.

FIG. 17 is an operation diagram of one embodiment of an underground piping method.

FIG. 18 is an explanatory view of attaching a perforated pipeline to a bridge.

FIG. 19 is an explanatory view of attaching a perforated pipeline to a bridge.

FIG. 20 is a perspective view of an example of a perforated conduit.

FIG. 21 is a perspective view of a conventional tube pillow.

FIG. 22 is a perspective view of a conventional tube pillow.

FIG. 23 is a plan view for explaining attachment of a perforated pipeline to a bridge.

FIG. 24 is a plan view for explaining attachment of a perforated pipeline to a bridge.

FIG. 25 is a plan view for explaining attachment of a perforated pipeline to a bridge.

FIG. 26 is a side view for explaining attachment of a perforated pipeline to a bridge.

[Explanation of symbols]

 Reference Signs List A Perforated pipeline E Main girder H Bridge e Suspension rod h Beam P pipe T Tunnel 10 Uppermost pipe pillow 11 Uppermost fixing member 12 Cradle 13, 17 Bolt 14, 18 Nut 20 Intermediate pipe pillow 21 Intermediate fixing member 30 Lowermost row Pipe pillow 31 Lowermost fixing member 32 Mounting member 40 Bolt bar

Claims (6)

[Claims] 1. A pipe pillow which is used when a pipe P through which a power cable or a communication cable a is inserted is attached to a bridge or laid in the ground, and is applied in a circumferential direction of an outer surface of the pipe P. The receiving stand 12 comprises members 11, 21, and 31 for supporting the receiving stand 12, and the receiving stand 12 is rotatable about the vertical axis with respect to the members 11, 21, and 31. And a tube pillow. 2. The pedestal 12 is a curved member along the outer peripheral surface of the pipe P. The center of the pedestal 12 is the members 11, 21,
2. The tube pillow according to claim 1, wherein said tube pillow is fixed to said base by bolts and nuts. 3. The radially opposite ends 32 of the pipe P of the members 11, 21, 31 are rotatable around the radial axis with respect to other portions.
The tube pillow according to. 4. The tube pillow according to claim 1, 2 or 3,
By using the pipes 20 and 30, the pipes P into which the power cables or the communication cables are inserted are arranged in a single row, a plurality of rows,
The lowermost member 31 and the uppermost member 11 are stacked in a plurality of stages.
Is fixed by bolts and nuts to form a plurality of rows and a plurality of stages of pipes P. 5. A perforated pipeline for a bridge bridge, according to claim 4, wherein
A pipe fixing structure for a perforated pipe line, wherein the lowermost or uppermost pipe pillow of the pipe fixing structure according to the above item is fixed to the beam h of the bridge. 6. The lowermost tube pillow when the multi-row, multi-stage or multi-row / multi-stage tube fixing structure according to claim 4 is loaded on a truck D and sent into a tunnel T. 30 and the tube pillow 30
The perforated pipe line is characterized in that the pedestal 12 is fed to the member 31, or both ends of the member 31 to other portions, and the pedestal 12 and at least one of both ends are rotatably fed. Underground piping method.