JPH0841920A - Pipe attaching structure in manhole - Google Patents

Abstract

PURPOSE:To simply and mechanically attach a fitting pipe to a manhole building frame. CONSTITUTION:This is a structure for attaching a fitting pipe 12 to the circumference of a hole 2 for the fitting pipe of a manhole building frame 2, and a rigid socket 3 having a bore being sufficiently larger than the outside diameter of the fitting pipe 12 is attached to the manhole building frame 2 through a buried anchor 4 and an anchor bolt 5. A convergent flexible cylindrical body 7 formed by attaching flanges 9, 10 to the root part and tip part of a cylindrical part 8 is attached to the rigid socket 3, and the fitting pipe 12 inserted through in the convergent flexible cylindrical body 7 is held by the inner periphery of the tip part. In addition, the flange 10 is fixed to a ring 13 fittedly attached to the fitting pipe 12 through a bolt 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for attaching a mounting pipe to a manhole body, and more particularly, to allow the mounting pipe to be mechanically attached to the manhole body and to have the mounting pipe flexible. The present invention provides a mounting structure having the above structure.

[0002]

2. Description of the Related Art As a conventional mounting method of this type of mounting pipe, a method of previously integrally mounting a concrete socket to a manhole body (for example, "Eva hole" developed by Ebata Concrete Industry Co., Ltd.) is known. .
In this method, since the socket is pre-mounted on the manhole body, it is only necessary to insert the mounting pipe into the socket and join it with a rubber seal at the site, so the work is simple and it is easy to secure the water honey. It is an excellent method.

However, this method has a problem in that a variety of manhole skeletons must be prepared because the positions of the sockets attached to the manhole skeleton are predetermined when the socket is manufactured in a factory. In addition, there was a big defect that it was not possible to deal with the pipeline construction error that occurred at the construction site. Furthermore, pipe lines are generally constructed from the downstream, but when connecting the mounting pipe to the manhole body,
Once the mounting pipe is deeply inserted into the manhole structure and then pulled out to connect the mounting pipe and the manhole structure, the concrete socket is pre-mounted on the manhole structure. There was also a problem that I could not do.

In order to improve the drawbacks of the method of attaching the concrete socket to the manhole body in advance,
For example, the actual fairness 4-32543 developed by the applicant of this patent
There is known a method of attaching a rubber socket shown in Japanese Patent Laid-Open Publication No. 2003-31187 to a manhole body. In the method of attaching this rubber socket to the manhole body, the socket itself has flexibility, so it is possible to fully absorb the error during construction, and insert the mounting pipe into the manhole body to construct the pipeline. It is an excellent method in that it can be used, and it has come into practical use.

[0005]

However, the method of attaching the rubber socket to the manhole body has also come to have the following problems. That is, when attaching the rubber socket to the manhole skeleton, an adhesive such as butyl rubber and bolts are used together,
If the conditions at the time of construction are bad, such as when the joint part is wet on site, there is a problem that the joint part peels off later and water leakage occurs. Further, when the rubber socket is mechanically fixed to the manhole body, a special jack or jig must be prepared on site, which is a complicated problem. Further, even in the method using this rubber socket, there is a problem that the range which can cope with the construction error of the pipeline is narrowed.

The mounting structure according to the present invention is a completely new technology developed in view of the above-mentioned problems of the prior art, and in particular, a manhole skeleton is provided with a rigid socket having a large inner diameter and is flexible. We provide a technology of a completely new mounting structure in which a rich flexible taper tube is attached to the rigid socket, and the mounting tube is inserted into the tapered flexible tuber, the rigid socket, and the manhole body while the mounting tube is attached to the manhole body. It is a thing.

[0007]

The pipe mounting structure in the manhole according to the present invention is a technique which has been fundamentally improved from the above-mentioned conventional problems, and the gist of the first invention is the manhole skeleton structure. In the structure for mounting the mounting pipe in the mounting pipe hole drilled in the wall surface, mount a rigid socket with an inner diameter that is sufficiently larger than the outer diameter of the mounting pipe around the mounting pipe hole of the manhole body, and fix it. The base portion of the tapered flexible cylinder whose inner diameter is almost equal to the outer diameter of the mounting pipe is mounted and fixed to the rigid socket, and the mounting pipe is further inserted into the mounting pipe holes of the tapered flexible cylinder, the rigid socket, and the manhole body. At the same time, the pipe mounting structure for the manhole is characterized in that the mounting pipe is supported by the manhole skeleton and the tip end of the tapered flexible cylinder.

Further, the gist of the second invention is that flanges are provided on the outer circumferences of the base portion and the tip portion of the tapered flexible cylinder, the flange of the base portion is attached to a rigid socket, and the flange of the tip portion is attached. Is a pipe mounting structure in a manhole according to the first aspect of the invention, characterized in that is attached to a ring fitted around the mounting pipe.

Further, the gist of the third invention is characterized in that the tapered flexible tubular body is constructed such that the central tubular portion has a small hardness and the flange portion has a large hardness. It is a pipe attachment structure in the manhole of the 1st invention and the 2nd invention.

[0010]

In the mounting structure of the first aspect of the invention, since the rigid socket having rigidity is mounted on the manhole body, the socket can be mechanically mounted on the manhole body easily and stably. Therefore, it is possible to pre-install it in a factory or the like. Since the rigid socket has an inner diameter sufficiently larger than the outer diameter of the mounting tube, the mounting tube inserted therein can change its direction freely. The gap between the mounting pipe, the manhole body and the rigid socket can be sufficiently filled with mortar and the mounting pipe can be supported by the manhole body and the rigid socket over a long distance. An anchor for mechanically attaching the tapered flexible cylinder can be embedded in the rigid socket in advance. A highly flexible tapered flexible cylinder is attached to a rigid socket, and the mounting pipe is supported by the tip of this tapered flexible cylinder, so the mounting pipe is resistant to construction errors in the pipeline, etc. It can correspond in a wide range.

In the second invention of the present application, since the flanges are provided so as to project from the outer circumferences of the base portion and the tip portion of the tapered flexible tube body, the tapered flexible tube is provided through these flanges. The body can be securely and firmly attached to the rigid socket and the ring fixed to the attachment tube.

In the third invention of the present application, since the central tubular portion of the tapered flexible tubular member is formed with a small hardness to be soft, it is possible to form a highly flexible tubular member. ,
The direction of the mounting tube fixed to this tapered flexible cylinder can be changed greatly. Further, since the flange portion has a large hardness, this flange portion can be firmly and stably attached to the ring provided on the rigid socket or the attachment tube.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the pipe mounting structure for a manhole according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a vertical cross-sectional view of an essential part in a state where the method of the present invention is carried out, and FIG. 1 is a perspective view showing the outer appearance of FIG. 1, FIG. 3 is a front explanatory view of a main part of FIG. 1, and FIG. 4 is a front explanatory view of another example.

In FIGS. 1 to 3, reference numeral 1 is a manhole body, and a mounting pipe hole 2 is bored at a predetermined position thereof. 3 is a rigid socket, which is a manhole body 1
It is mounted and fixed around the mounting pipe hole 2 of. The rigid socket 3 is made of a rigid material such as concrete or synthetic resin. In addition, the rigid socket 3 can be mechanically attached by screwing the anchor bolt 5 into the embedded anchor 4 which is embedded in the manhole body 1 in advance, and the adhesive is provided between the manhole body 1 and the rigid socket 3. It is filled. The rigid socket 3 is formed with an inner diameter sufficiently larger than the outer diameter of a mounting pipe described later, and an embedded anchor 6 is embedded in the end portion thereof.

Reference numeral 7 denotes a tapered flexible cylinder, which has a central cylindrical portion 8 formed in a tapered shape, a flange 9 projecting from the outer periphery of the base of the cylindrical portion 8, and the cylindrical portion 8. It is integrally configured with a flange 10 protruding from the outer periphery of the tip portion. The tubular portion 8 is formed of a flexible plastic material having a small hardness, a synthetic rubber material, or the like, and the tip portion thereof has an inner diameter substantially equal to the outer diameter of the mounting pipe. Each of the flanges 9 and 10 is made of a plastic material such as ABS resin having a high hardness, and the flanges 9 and 10 and the tubular portion 8 are integrally formed. Bolt holes through which bolts can be inserted are formed at predetermined positions of the flanges 9 and 10.
On the outer peripheral edge of the flange 9, a projecting ring 11 that can cover the outer peripheral surface of the rigid socket 3 is provided in a protruding manner.

Reference numeral 12 denotes a mounting pipe, which is a manhole body 1
Mounting tube hole 2, rigid socket 3 and tapered flexible cylinder 7
It has such a size that it can be inserted through and attached to. A ring 13 for fixing the mounting tube 12 to a flange 10 provided at the tip of the tapered flexible cylinder 7 is mounted at a predetermined position on the outer circumference of the mounting tube 12. Reference numeral 14 in the drawing is a seal rubber, and is configured to be sandwiched between the two when fixing the ring 13 to the flange 10. Also, 1
5 and 16 are also rings, and the flange 9 and the flange 1
It is configured so that the flange 9 or the flange 10 can be sandwiched when 0 is attached to the rigid socket 3 or the ring 13, respectively.

In carrying out the pipe mounting structure according to the present invention, the rigid socket 3 is provided around the mounting pipe hole 2 formed at a predetermined position of the manhole body 1 with the bolt 5 and the embedded anchor 4 interposed therebetween. Attach and fix. Next, the flange 9 of the tapered flexible tubular body 7 is brought into contact with the end surface of the rigid socket 3, and at the same time, the outer peripheral portion of the rigid socket 3 is covered with the protruding ring 11, and the ring 15 is superposed on the outer side of the flange 9 to secure the bolt. Using 17 and the embedded anchor 6, both are mechanically fixed. After that, the mounting pipe 12 is deeply inserted from the tip of the tapered flexible cylinder 7 to the inside of the rigid socket 3, the mounting pipe hole 2 and the manhole body 1, and then the mounting pipe 12 is connected to a pipe line (not shown). .

Further, the ring 13 fitted and attached to the outer periphery of the mounting tube 12 is brought into contact with the flange 10 of the tapered flexible tubular body 7, and a seal rubber 14 is interposed between the two, and the ring 10 is attached to the rear surface of the flange 10. The rings 16 are overlapped, and in this state, the flange 10 and the rings 13 and 16 abutting on both side surfaces thereof are bolted to each other via the plurality of bolts 18.
Then, the attachment space 12 is mechanically attached and fixed to the tapered flexible cylinder 7. In addition, a backup material or mortar is filled in the gaps between the mounting pipe 12, the manhole body 1 and the rigid socket 3. In this way, the pipe mounting structure according to the present invention can be constructed.

In the embodiment described above, three triangular protrusions 3a are provided on the outer peripheral portion of the rigid socket 3 and the anchor bolt 5 is inserted through this portion, but as shown in FIG. It is also possible to form the outer periphery of the rigid socket 3 to have a large diameter, to make a hole at a predetermined position thereof, and to insert the anchor bolt 5 into this hole.

[0020]

Since the pipe mounting structure for the manhole according to the present invention has the above-described structure and operation, it has the following great effects.

(1) Since the mounting pipe is supported by the tapered flexible cylindrical body and is inserted into the rigid socket having an inner diameter sufficiently larger than that of the mounting pipe, the mounting pipe mounted on the manhole frame is mounted in the mounting direction. Can be changed significantly. (2) The mounting tube can be inserted deep into the manhole body. (3) The mounting tube can be stably supported over a long distance by the manhole body and the rigid socket.

(4) Since the rigid socket is interposed between the body manhole and the tapered flexible cylinder, these can be mechanically coupled in a stable state. (5) Since the flange and the tip end of the tapered flexible cylinder are provided respectively, the tapered flexible cylinder is easily and surely attached to the rigid socket or the grunge fitted to the mounting pipe through the flange. Can be attached and fixed. (6) Since the inner diameter of the tip of the tapered flexible cylinder is substantially equal to the outer diameter of the attachment tube, the tip can support the attachment tube.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a main part in a state where a method of the present invention is carried out.

FIG. 2 is a perspective view showing the appearance of FIG.

FIG. 3 is a front explanatory view of a main part of FIG.

FIG. 4 is a front explanatory view of another example.

[Explanation of symbols]

1 Manhole frame 2 Mounting tube hole 3 Rigid socket 4 Embedded anchor 5 Anchor bolt 6 Embedded anchor 7 Tapered flexible tubular body 8 Cylindrical part 9,10 Flange 11 Mounting ring 12 Mounting tube 13 Ring 14 Seal rubber 15,16 Ring 17, 18 volt

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Nobuo Moribata 1-22-2, Nishishinjuku, Shinjuku-ku, Tokyo Haneda Hume Tube Co., Ltd.

Claims (3)

[Claims] 1. In a structure for mounting a mounting pipe in a mounting pipe hole formed in a wall surface of a manhole body, a rigid socket having an inner diameter sufficiently larger than an outer diameter of the mounting pipe is provided around the mounting pipe hole of the manhole body. Mounted on the rigid socket, and the mounting tube is fixed to the rigid socket, and the mounting tube is mounted and fixed on the rigid socket, and the mounting tube is further mounted on the rigid socket. A pipe mounting structure in a manhole, characterized in that the pipe is inserted into a hole for a mounting pipe of a body and the mounting pipe is supported by a tip of a manhole body and a tapered flexible cylinder. 2. A flange is provided on the outer circumference of each of the base and the tip of the tapered flexible cylinder, the flange of the base is attached to a rigid socket, and the flange of the tip is fitted around a mounting pipe. The pipe mounting structure for a manhole according to claim 1, wherein the pipe mounting structure is mounted on a ring that is mounted. 3. The manhole according to claim 1 or 2, wherein the tapered flexible tubular body is configured such that the central tubular portion has a small hardness and the flange portion has a large hardness. Pipe mounting structure in.