JPH0432543Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an attachment structure for attaching an attachment pipe to an attachment pipe hole drilled in a manhole frame.

<Prior art> Conventionally, when attaching and fixing an attachment pipe such as an inflow pipe or an outflow pipe to a manhole, a hole for the attachment pipe is drilled in the manhole body, the attachment pipe is inserted into the hole, and both It was installed and fixed by filling the gap with concrete mortar.

However, in this mounting structure, concrete mortar is made on site and the gap between the mounting pipe hole and the mounting pipe is filled with concrete mortar.
The mounting pipe is fixed to the frame with concrete mortar, and therefore, there is a drawback that the mounting pipe or the frame may be damaged when bending stress is applied.

In order to improve this conventional drawback, recently a method has been developed in which a concrete socket is provided in advance on the manhole body and the mounting pipe is connected to the socket through a rubber ring. A method has been developed for attaching and fixing an attachment pipe to a manhole frame by using a rubber joint tube that is entirely flexible.

<Problems to be solved by the invention> However, the former method of protruding sockets for connection of attachment pipes in advance on the manhole structure requires preparation of an extremely wide variety of manhole structures with sockets in advance, and requires on-site work. There were problems such as the inability to respond to construction errors and sudden changes in the mounting position of the mounting pipe.

Furthermore, the latter rubber joint pipes are very expensive, making them difficult to use in terms of cost, and are not widely used.

The mounting structure of the manhole frame and attachment pipe according to the present invention is a completely new technology developed in view of the above-mentioned conventional problems, and in particular, it is possible to attach the attachment pipe to the manhole frame with simple work on site. To provide a mounting structure that is easy to install, prevents water from leaking between the hole for the mounting pipe in the manhole frame and the mounting pipe, and further allows the mounting pipe to be attached to the manhole frame with flexibility. .

<Means for solving the problem> The mounting structure between the manhole frame and the attached pipe according to the present invention is a technology that fundamentally improves the above-mentioned problems. In a structure in which a mounting pipe is attached to a mounting pipe hole, an elongated hole is bored at a predetermined position on the periphery, and a flange is provided at the base end of the ring body that can come into contact with the outer peripheral surface of the manhole body. A fixing flange is fixed around the mounting pipe hole of the manhole frame via anchor bolts, and a rubber ring-shaped water stop band having a tip with an inner diameter that can come into close contact with the outer peripheral surface of the mounting pipe is attached to the ring body. The end of the mounting pipe which is fitted onto the tip edge of the manhole and which is further inserted through the rubber ring-shaped water stop band and the fixing flange is inserted into the mounting pipe hole of the manhole frame,
A flexible manhole joint and joint material are provided in the gap between the mounting pipe hole and the mounting pipe, and the pipe is fixedly attached.

<Function> As described above, the mounting structure of the manhole frame and the attachment pipe according to the present invention includes a fixing flange formed by providing a flange at the side end of the ring body that can come into close contact with the outer peripheral surface of the manhole frame, and The mounting pipe joint, which is constructed by attaching a flexible ring-shaped water stop band that can come into close contact with the mounting pipe to the other end of this fixing flange, is used to connect the manhole frame and the mounting pipe. can be easily attached to the manhole structure on-site.

Furthermore, by using this attachment pipe joint, the attachment pipe can be attached to the manhole frame in a watertight manner.

Furthermore, the ring-shaped water stop band of the above-mentioned mounting pipe joint is flexible, and a flexible manhole is provided in the gap between the mounting pipe hole of the manhole body and the mounting pipe inserted into the mounting pipe hole. Since the joint and joint filler are filled, the method of attaching the attachment pipe can be changed as necessary, and it can also cope with bending stress caused by earthquakes, ground subsidence, etc.

<Example> To specifically explain an example of the fitting for the mounting pipe used in the present invention with reference to the drawings, in FIGS. 1 to 5, 1 is a plastic fixing flange, Consisting of a ring body 4 having an inner diameter approximately equal to the inner diameter of the mounting pipe hole 3 of the frame body 2, and a flange 5 attached to one end of the ring body 4 that can be brought into close contact with the outer circumferential surface of the manhole frame 2. has been done. A long hole 7 into which an anchor bolt 6 can be inserted is bored in a part of the collar 5. Reference numeral 8 denotes a flexible ring-shaped water stop band made of rubber that is fitted onto the other end side of the ring body 4 of the fixing flange 1, and a tip 8a provided at the tip thereof is attached to the outer periphery of the mounting tube 9. It has a small diameter so that it can come in close contact with the surface.

In the configuration of the mounting structure according to the present invention, as shown in FIGS. 4 and 5, the manhole frame 2
An anchor bolt 6 was driven into a predetermined position around the mounting pipe hole 3, and a sealing material 13 was applied in advance to the back surface using a nut 10 while inserting the anchor bolt 6 into the elongated hole 7 of the collar 5. The fixing flange 1 is fixed around the mounting pipe hole 3.

Next, one end of the mounting pipe 9 is inserted into the water stop band 8, the ring body 4, and the mounting pipe hole 3, and a flexible rubber tube is inserted into the gap between the mounting pipe 9 and the mounting pipe hole 3. A manufactured manhole joint 11 is attached from the inside of the manhole body 2, a joint material 14 is provided in the gap around this manhole joint 11, and a tape 12 is attached to the tip 8a of the water stop band 8 and the attached pipe 9 adjacent thereto. By wrapping it around the outer circumferential surface of the manhole, the two are fixed, and the attachment pipe 9 can be stably and easily attached to the manhole frame 2.

<Effects of the invention> As described above, the mounting structure of the manhole frame and the attachment pipe according to the invention includes a highly flexible ring-shaped water stop band on a fixed flange with a flange at one end of the ring body. Since the attachment pipe joint constructed by fitting is used, the attachment pipe inserted into the attachment pipe hole of the manhole frame can be easily and reliably supported by the attachment pipe joint.

Further, since this attachment pipe joint has the above-described structure, it can be easily attached around the attachment pipe hole of the manhole frame without requiring any skill by using anchor bolts or the like.

Moreover, since the mounting structure of the present invention has the above-described structure, it can be mounted while responding freely to errors during on-site construction. In addition, this mounting pipe is fixed around the mounting pipe hole in the manhole structure via a fixing flange, a water stop band, a rubber manhole joint, tape, etc., resulting in a multi-layered water stop structure, with extremely high water stop properties. Water leakage can be prevented reliably.

Furthermore, since the water stop band is flexible and a rubber manhole joint is used around the attached pipe, it is resistant to bending stresses such as earthquakes and ground subsidence, and the attached pipe or manhole frame is damage can be prevented.

Moreover, since the attachment pipe can be returned to its original state after being deeply inserted into the building body through this joint, it has the feature that it can be used as is in upstream and downstream joints.

[Brief explanation of the drawing]

1 and 2 are perspective views of a fitting for a mounting pipe used in the mounting structure of the present application, and FIG. 3 is a sectional view thereof;
4 and 5 are cross-sectional explanatory views showing the mounting structure. 1 is a flange, 2 is a manhole frame, 3 is a hole for a mounting pipe, 4 is a ring body, 5 is a collar, 6 is an anchor bolt, 8 is a water stop band, 9 is a mounting pipe, 11 is a manhole joint, 12 is a tape, 13 is a sealing material, and 14 is a joint material.

Claims (1)

[Scope of utility model registration request] In a structure in which an attachment pipe 9 is attached to an attachment pipe hole 3 drilled in the wall surface of the manhole body 2, an elongated hole 7 is bored at a predetermined position on the periphery, and a collar that can come into contact with the outer peripheral surface of the manhole body 2 is provided. A fixing flange 1 of a fitting for an attaching pipe provided at the base end of the ring body 4 is fixed around the attaching pipe hole 3 of the manhole frame 2 through an anchor bolt 6, and is closely attached to the outer circumferential surface of the attaching pipe 9. A rubber ring-shaped water stop band 8 having a tip end 8a having an inner diameter to obtain the inner diameter is attached to the ring body 4.
The end of the mounting pipe 9, which is inserted into the rubber ring-shaped water stop band 8 and the fixing flange 1, is inserted into the mounting pipe hole 3 of the manhole frame 2, and Attachment of a manhole frame and an attachment pipe, characterized in that a flexible manhole joint 11 and a joint material 14 are provided in the gap between the attachment pipe hole 3 and the attachment pipe 9 and are fixedly attached. structure.