JP3566755B2 - Pipe mounting structure in manhole - Google Patents

Description

[0001]
[Industrial applications]
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 a mounting structure in which a mounting pipe can be mechanically mounted to a manhole body and the mounting pipe can be mounted with flexibility. Things.
[0002]
[Prior art]
As a conventional mounting method of this type of mounting pipe, a method of integrally mounting a concrete socket to a manhole frame in advance (for example, “Evahole” developed by Ebata Concrete Industry Co., Ltd.) is known. According to this method, since the socket is pre-mounted on the manhole body, the mounting pipe can be inserted into the socket and joined with a rubber seal at the site, so that the operation is simple, and it is easy to secure the nectarity. It is an excellent method in such points.
[0003]
However, this method has a problem that various kinds of manhole bodies must be prepared because the position of the socket to be attached to the manhole body is predetermined when the socket is manufactured at a factory. In addition, there was also a major drawback such that it was impossible to cope with a pipe construction error generated at the construction site. In addition, pipes are generally constructed from the downstream, but when connecting the mounting pipe to the manhole skeleton, once insert the mounting pipe deep into the manhole skeleton and pull out to perform the connection work between the mounting pipe and the manhole skeleton. However, there is a problem that such a work cannot be performed with this type of concrete socket in which a concrete socket is previously attached to a manhole frame.
[0004]
In order to improve the drawbacks of the method of attaching the concrete socket to the manhole body in advance, there is known a method of attaching a rubber socket to the manhole body as disclosed in Japanese Utility Model Publication No. 4-32543 developed by the present applicant. . The method of attaching this rubber socket to the manhole body is that the socket itself has flexibility, so that errors during construction can be sufficiently absorbed, and the pipe is inserted into the manhole body to construct the pipeline It is an excellent method in that it can be used, and it is coming to practical use.
[0005]
[Problems to be solved by the invention]
However, the method of attaching the rubber socket to the manhole frame has also caused the following new problems. In other words, when attaching the rubber socket to the manhole body, it is attached by using an adhesive such as butyl rubber and a bolt together, but if the conditions at the time of construction such as when the joint portion is damp at the site are poor, There was a problem that the part was peeled off later and water leakage occurred. Further, when the rubber socket is mechanically fixed to the manhole frame, a special jack or jig must be prepared at the site, which is complicated. Further, even in the method using the rubber socket, there is a problem that the range that can cope with the construction error of the pipeline is narrowed.
[0006]
The mounting structure according to the present invention is a completely new technology developed in view of the above-mentioned conventional problems. In particular, a rigid socket having a large inner diameter is mounted on a manhole frame, and a tapered type having a high flexibility is provided. It is an object of the present invention to provide a completely new mounting structure for attaching a flexible tube to the rigid socket, and further attaching the mounting tube to the manhole body with the mounting tube being inserted through the tapered flexible tube, the rigid socket and the manhole body. .
[0007]
[Means for Solving the Problems]
The pipe mounting structure in a manhole according to the present invention is a technique which fundamentally improves the above-mentioned conventional problems, and the gist of the first invention is a hole for a mounting pipe drilled in a wall surface of a manhole frame. In the structure for mounting the mounting pipe, a rigid socket having an inner diameter sufficiently larger than the outer diameter of the mounting pipe is fixedly mounted around the mounting pipe hole of the manhole body, and the inner diameter of the tip portion is substantially equal to the outer diameter of the mounting pipe. An equal tapered flexible cylindrical body is attached and fixed to the rigid socket, and a mounting pipe is inserted through the tapered flexible cylindrical body, the rigid socket, and a mounting hole for the manhole body, and the mounting pipe is connected to the manhole body and the tapered body. The flexible tubular body is supported at the distal end thereof , and a flange is provided on the outer periphery of each of the base and the distal end of the tapered flexible tubular body, the flange of the base is attached to the rigid socket, and the flange of the distal end is provided. Around the mounting pipe It is in tube mounting structure in manholes, wherein the configured attached to fitted to a ring.
[0008]
Further, the gist of the second invention, the tapered shape flexible tubular body, first was characterized by the cylindrical portion of the center portion has a small hardness, and a flange portion is formed with great hardness 1 It is a pipe mounting structure in the manhole of the invention.
[0009]
[Action]
In the mounting structure of the first invention, since the rigid socket having rigidity is mounted on the manhole frame, the socket can be mechanically mounted on the manhole frame easily and stably. Therefore, it can be mounted in a factory or the like in advance. Since the rigid socket has an inner diameter sufficiently larger than the outer diameter of the mounting tube, the direction of the mounting tube inserted therein can be freely changed.
[0010]
The gap between the mounting pipe and the manhole frame and the rigid socket can be sufficiently filled with mortar and the like, and the mounting pipe can be supported over a long distance by the manhole frame and the rigid socket. An anchor for mechanically attaching the tapered flexible cylinder can be embedded in the rigid socket in advance. A flexible tapered flexible cylinder is attached to a rigid socket, and the distal end of the tapered flexible cylinder supports the mounting pipe. And can handle a wide range.
[0011]
Also, at the first invention, since the flange on the outer periphery of each of the original portion and the tip portion of the tapered shape flexible tubular body is projected, the tapered shape flexible tubular body via a flange of this such It can be securely attached to the rigid socket and the ring fixed to the mounting tube in a stable state.
[0012]
Is In the second aspect of the present invention, since the cylindrical portion of the center portion of the tapered flexible tubular body is in soft formed with a small hardness, can constitute a cylindrical body rich in flexibility, the The direction of the mounting tube fixed to the tapered flexible tubular body can be largely changed. Further, since the flange portion has a high hardness, the flange portion can be firmly and stably attached to the ring provided on the rigid socket or the mounting tube.
[0013]
【Example】
One embodiment of a pipe mounting structure in a manhole according to the present invention will be specifically described with reference to the drawings. FIG. 1 is a longitudinal sectional view of a main part in a state where a method of the present invention is performed, and FIG. 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.
[0014]
In FIGS. 1 to 3, reference numeral 1 denotes a manhole frame, and a hole 2 for a mounting pipe is formed at a predetermined position. Reference numeral 3 denotes a rigid socket, which is mounted and fixed around the mounting pipe hole 2 of the manhole frame 1. The rigid socket 3 is formed of a rigid material such as concrete or synthetic resin. In addition, the rigid socket 3 can be mechanically attached by screwing an anchor bolt 5 to an embedded anchor 4 previously embedded in the manhole frame 1, and an adhesive is provided between the manhole frame 1 and the rigid socket 3. Is filled. The rigid socket 3 has an inner diameter sufficiently larger than an outer diameter of a mounting pipe described later, and an embedded anchor 6 is embedded at an end thereof.
[0015]
Reference numeral 7 denotes a tapered flexible tubular body, which is a tapered central tubular portion 8, a flange 9 protruding from the outer periphery of the base of the tubular portion 8, and an outer periphery of the distal end of the tubular portion 8. And is integrally formed with the flange 10 protruding from the main body. The cylindrical portion 8 is formed of a plastic material or a synthetic rubber material having a small hardness and high flexibility, and has a tip portion having an inner diameter substantially equal to the outer diameter of the mounting tube. The flanges 9 and 10 are each formed of a plastic material such as ABS resin having a high hardness, and the flanges 9 and 10 and the cylindrical 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 protruding ring 11 is provided so as to cover the outer peripheral surface of the rigid socket 3.
[0016]
Reference numeral 12 denotes a mounting pipe, which has a size that can be inserted through the mounting pipe hole 2, the rigid socket 3, and the tapered flexible cylindrical body 7 of the manhole frame 1. At a predetermined position on the outer periphery of the mounting tube 12, a ring 13 for fixing the mounting tube 12 to a flange 10 provided at the tip of the tapered flexible tubular body 7 is mounted. In the figure, reference numeral 14 denotes a seal rubber, which is configured to be sandwiched between the ring 13 and the flange 13 when the ring 13 is fixed to the flange 10. Reference numerals 15 and 16 also denote rings, which are configured to be able to clamp these flanges 9 and 10 when the flanges 9 and 10 are attached to the rigid socket 3 or the ring 13, respectively.
[0017]
In implementing the pipe mounting structure according to the present invention, the rigid socket 3 is mounted and fixed around the mounting pipe hole 2 drilled at a predetermined position of the manhole frame 1 via the bolt 5 and the embedded anchor 4. . Next, the flange 9 of the tapered flexible cylindrical body 7 is brought into contact with the end face of the rigid socket 3, and at the same time, the projecting ring 11 is coated on the outer peripheral portion of the rigid socket 3, and the ring 15 is superimposed on the outside of the flange 9. 17 and the embedded anchor 6 are mechanically fixed to each other. Thereafter, the mounting pipe 12 is inserted deeply from the distal end portion of the tapered flexible tubular body 7 to the inside of the rigid socket 3, the mounting pipe hole 2 and the manhole frame 1, and then the mounting pipe 12 is connected to a conduit not shown. .
[0018]
A ring 13 fitted and mounted on the outer periphery of the mounting tube 12 abuts on the flange 10 of the tapered flexible cylindrical body 7, and a seal rubber 14 is interposed therebetween, and a ring 16 is provided on the back surface of the flange 10. In this state, the flange 10 and the rings 13 and 16 abutting on both side surfaces thereof are fixed with the bolts 18 via the plurality of bolts 18 in this state, and the mounting interval 12 is mechanically attached to the tapered flexible cylinder 7. Attach and fix to. A gap between the mounting pipe 12 and the manhole frame 1 and the rigid socket 3 is filled with a backup material or mortar. Thus, the pipe mounting structure according to the present invention can be configured.
[0019]
In the above-described embodiment, three triangular protrusions 3a are provided on the outer peripheral portion of the rigid socket 3 so as to project therethrough, and the anchor bolts 5 are inserted through these portions. However, as shown in FIG. It is also possible to form the outer periphery of 3 into a large diameter, drill a hole at a predetermined position, and insert the anchor bolt 5 through this hole.
[0020]
【The invention's effect】
Since the pipe mounting structure in the manhole according to the present invention has the above-described structure and operation, it has the following great effects.
[0021]
(1) The mounting pipe is supported by the tapered flexible tubular body and is inserted into a rigid socket having an inner diameter sufficiently larger than the mounting pipe, so that the mounting pipe mounted on the manhole frame changes its mounting direction greatly. I can do it. (2) The mounting pipe can be inserted deep into the manhole body. (3) The mounting pipe can be stably supported over a long distance by the manhole frame and the rigid socket.
[0022]
(4) Since the rigid socket is interposed between the body manhole and the tapered flexible cylindrical body, these can be mechanically coupled in a stable state. (5) is provided with the respective flange based unit and the tip of the tapered shape flexible tubular body, easily and reliably attach the tapered shape flexible tubular body via the flange fitting wearing by a ring to the rigid socket or attachment tube Can be fixed. (6) Since the inner diameter of the distal end of the tapered flexible tubular body is substantially equal to the outer diameter of the mounting pipe, the mounting pipe can be supported by this distal end.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a main part in a state where a method of the present invention is performed.
FIG. 2 is a perspective view showing the appearance of FIG.
FIG. 3 is an explanatory front view of a main part of FIG. 1;
FIG. 4 is an explanatory front view of another example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Manhole frame 2 Hole for mounting pipe 3 Rigid socket 4 Embedded anchor 5 Anchor bolt 6 Embedded anchor 7 Tapered flexible cylinder 8 Tube section
9,10 Flange
11 Collar
12 Mounting tube
13 Ring
14 Seal rubber
15,16 rings
17,18 volt

Claims (2)

In a structure in which a mounting pipe is mounted in a mounting pipe hole formed in a wall surface of a manhole frame, a rigid socket having an inner diameter sufficiently larger than the outer diameter of the mounting pipe is mounted and fixed around the mounting pipe hole of the manhole frame, The base of the tapered flexible cylinder whose inner diameter at the tip is substantially equal to the outer diameter of the mounting pipe is fixed to the rigid socket, and the mounting pipe is further provided with holes for the tapered flexible cylinder, the rigid socket and the manhole frame. At the same time, the mounting pipe is supported by the manhole body and the distal end of the tapered flexible cylinder, and flanges are protruded from the outer periphery of the base and the distal end of the tapered flexible cylinder, respectively. A pipe mounting structure in a manhole, wherein a flange is mounted on a rigid socket, and a flange at a tip portion is mounted on a ring fitted around a mounting pipe . The tapered flexible tubular body is characterized in that a tubular portion at a central portion thereof has a small hardness, and a flange portion projecting from a base portion and a tip portion has a large hardness. A pipe mounting structure for a manhole according to claim 1.

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